diff options
Diffstat (limited to 'source/blender/draw/engines')
163 files changed, 49883 insertions, 0 deletions
diff --git a/source/blender/draw/engines/basic/basic_engine.c b/source/blender/draw/engines/basic/basic_engine.c new file mode 100644 index 00000000000..8356838a885 --- /dev/null +++ b/source/blender/draw/engines/basic/basic_engine.c @@ -0,0 +1,220 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file basic_engine.c + * \ingroup draw_engine + * + * Simple engine for drawing color and/or depth. + * When we only need simple flat shaders. + */ + +#include "DRW_render.h" + +#include "BKE_icons.h" +#include "BKE_idprop.h" +#include "BKE_main.h" +#include "BKE_particle.h" + +#include "DNA_particle_types.h" + +#include "GPU_shader.h" + +#include "basic_engine.h" +/* Shaders */ + +#define BASIC_ENGINE "BLENDER_BASIC" + +/* *********** LISTS *********** */ + +/* GPUViewport.storage + * Is freed everytime the viewport engine changes */ +typedef struct BASIC_StorageList { + struct BASIC_PrivateData *g_data; +} BASIC_StorageList; + +typedef struct BASIC_PassList { + struct DRWPass *depth_pass; + struct DRWPass *depth_pass_cull; +} BASIC_PassList; + +typedef struct BASIC_Data { + void *engine_type; + DRWViewportEmptyList *fbl; + DRWViewportEmptyList *txl; + BASIC_PassList *psl; + BASIC_StorageList *stl; +} BASIC_Data; + +/* *********** STATIC *********** */ + +static struct { + /* Depth Pre Pass */ + struct GPUShader *depth_sh; +} e_data = {NULL}; /* Engine data */ + +typedef struct BASIC_PrivateData { + DRWShadingGroup *depth_shgrp; + DRWShadingGroup *depth_shgrp_cull; + DRWShadingGroup *depth_shgrp_hair; +} BASIC_PrivateData; /* Transient data */ + +/* Functions */ + +static void basic_engine_init(void *UNUSED(vedata)) +{ + /* Depth prepass */ + if (!e_data.depth_sh) { + e_data.depth_sh = DRW_shader_create_3D_depth_only(); + } +} + +static void basic_cache_init(void *vedata) +{ + BASIC_PassList *psl = ((BASIC_Data *)vedata)->psl; + BASIC_StorageList *stl = ((BASIC_Data *)vedata)->stl; + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_mallocN(sizeof(*stl->g_data), __func__); + } + + { + psl->depth_pass = DRW_pass_create( + "Depth Pass", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_WIRE); + stl->g_data->depth_shgrp = DRW_shgroup_create(e_data.depth_sh, psl->depth_pass); + + psl->depth_pass_cull = DRW_pass_create( + "Depth Pass Cull", + DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_BACK); + stl->g_data->depth_shgrp_cull = DRW_shgroup_create(e_data.depth_sh, psl->depth_pass_cull); + } +} + +static void basic_cache_populate(void *vedata, Object *ob) +{ + BASIC_StorageList *stl = ((BASIC_Data *)vedata)->stl; + + /* TODO(fclem) fix selection of smoke domains. */ + + if (!DRW_object_is_renderable(ob) || (ob->dt < OB_SOLID)) { + return; + } + + const DRWContextState *draw_ctx = DRW_context_state_get(); + if (ob != draw_ctx->object_edit) { + for (ParticleSystem *psys = ob->particlesystem.first; + psys != NULL; + psys = psys->next) + { + if (!psys_check_enabled(ob, psys, false)) { + continue; + } + if (!DRW_object_is_visible_psys_in_active_context(ob, psys)) { + continue; + } + ParticleSettings *part = psys->part; + const int draw_as = (part->draw_as == PART_DRAW_REND) ? part->ren_as : part->draw_as; + if (draw_as == PART_DRAW_PATH) { + struct GPUBatch *hairs = DRW_cache_particles_get_hair(ob, psys, NULL); + DRW_shgroup_call_add(stl->g_data->depth_shgrp, hairs, NULL); + } + } + } + + /* Make flat object selectable in ortho view if wireframe is enabled. */ + if ((draw_ctx->v3d->overlay.flag & V3D_OVERLAY_WIREFRAMES) || + (ob->dtx & OB_DRAWWIRE) || + (ob->dt == OB_WIRE)) + { + int flat_axis = 0; + bool is_flat_object_viewed_from_side = (draw_ctx->rv3d->persp == RV3D_ORTHO) && + DRW_object_is_flat(ob, &flat_axis) && + DRW_object_axis_orthogonal_to_view(ob, flat_axis); + + if (is_flat_object_viewed_from_side) { + /* Avoid losing flat objects when in ortho views (see T56549) */ + struct GPUBatch *geom = DRW_cache_object_wire_outline_get(ob); + DRW_shgroup_call_object_add(stl->g_data->depth_shgrp, geom, ob); + return; + } + } + + const bool is_active = (ob == draw_ctx->obact); + const bool use_hide = is_active && DRW_object_use_hide_faces(ob); + + struct GPUBatch *geom = DRW_cache_object_surface_get_ex(ob, use_hide); + if (geom) { + const bool do_cull = (draw_ctx->v3d && (draw_ctx->v3d->flag2 & V3D_BACKFACE_CULLING)); + /* Depth Prepass */ + DRW_shgroup_call_add((do_cull) ? stl->g_data->depth_shgrp_cull : stl->g_data->depth_shgrp, geom, ob->obmat); + } +} + +static void basic_cache_finish(void *vedata) +{ + BASIC_StorageList *stl = ((BASIC_Data *)vedata)->stl; + + UNUSED_VARS(stl); +} + +static void basic_draw_scene(void *vedata) +{ + BASIC_PassList *psl = ((BASIC_Data *)vedata)->psl; + + DRW_draw_pass(psl->depth_pass); + DRW_draw_pass(psl->depth_pass_cull); +} + +static void basic_engine_free(void) +{ + /* all shaders are builtin */ +} + +static const DrawEngineDataSize basic_data_size = DRW_VIEWPORT_DATA_SIZE(BASIC_Data); + +DrawEngineType draw_engine_basic_type = { + NULL, NULL, + N_("Basic"), + &basic_data_size, + &basic_engine_init, + &basic_engine_free, + &basic_cache_init, + &basic_cache_populate, + &basic_cache_finish, + NULL, + &basic_draw_scene, + NULL, + NULL, + NULL, +}; + +/* Note: currently unused, we may want to register so we can see this when debugging the view. */ + +RenderEngineType DRW_engine_viewport_basic_type = { + NULL, NULL, + BASIC_ENGINE, N_("Basic"), RE_INTERNAL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, + &draw_engine_basic_type, + {NULL, NULL, NULL} +}; + + +#undef BASIC_ENGINE diff --git a/source/blender/draw/engines/basic/basic_engine.h b/source/blender/draw/engines/basic/basic_engine.h new file mode 100644 index 00000000000..0adf99835a2 --- /dev/null +++ b/source/blender/draw/engines/basic/basic_engine.h @@ -0,0 +1,32 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file basic_engine.h + * \ingroup draw_engine + */ + +#ifndef __BASIC_ENGINE_H__ +#define __BASIC_ENGINE_H__ + +extern DrawEngineType draw_engine_basic_type; +extern RenderEngineType DRW_engine_viewport_basic_type; + +#endif /* __BASIC_ENGINE_H__ */ diff --git a/source/blender/draw/engines/eevee/eevee_bloom.c b/source/blender/draw/engines/eevee/eevee_bloom.c new file mode 100644 index 00000000000..d111c28b256 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_bloom.c @@ -0,0 +1,336 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_bloom.c + * \ingroup draw_engine + * + * Eevee's bloom shader. + */ + +#include "DRW_render.h" + +#include "BLI_dynstr.h" + +#include "BKE_global.h" /* for G.debug_value */ + +#include "GPU_extensions.h" +#include "GPU_texture.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" + +static struct { + /* Bloom */ + struct GPUShader *bloom_blit_sh[2]; + struct GPUShader *bloom_downsample_sh[2]; + struct GPUShader *bloom_upsample_sh[2]; + struct GPUShader *bloom_resolve_sh[2]; +} e_data = {{NULL}}; /* Engine data */ + +extern char datatoc_effect_bloom_frag_glsl[]; + +static void eevee_create_shader_bloom(void) +{ + e_data.bloom_blit_sh[0] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_BLIT\n"); + e_data.bloom_blit_sh[1] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_BLIT\n" + "#define HIGH_QUALITY\n"); + + e_data.bloom_downsample_sh[0] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_DOWNSAMPLE\n"); + e_data.bloom_downsample_sh[1] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_DOWNSAMPLE\n" + "#define HIGH_QUALITY\n"); + + e_data.bloom_upsample_sh[0] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_UPSAMPLE\n"); + e_data.bloom_upsample_sh[1] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_UPSAMPLE\n" + "#define HIGH_QUALITY\n"); + + e_data.bloom_resolve_sh[0] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_RESOLVE\n"); + e_data.bloom_resolve_sh[1] = DRW_shader_create_fullscreen( + datatoc_effect_bloom_frag_glsl, + "#define STEP_RESOLVE\n" + "#define HIGH_QUALITY\n"); +} + +int EEVEE_bloom_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_EffectsInfo *effects = stl->effects; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (scene_eval->eevee.flag & SCE_EEVEE_BLOOM_ENABLED) { + const float *viewport_size = DRW_viewport_size_get(); + + /* Shaders */ + if (!e_data.bloom_blit_sh[0]) { + eevee_create_shader_bloom(); + } + + /* Bloom */ + int blitsize[2], texsize[2]; + + /* Blit Buffer */ + effects->source_texel_size[0] = 1.0f / viewport_size[0]; + effects->source_texel_size[1] = 1.0f / viewport_size[1]; + + blitsize[0] = (int)viewport_size[0]; + blitsize[1] = (int)viewport_size[1]; + + effects->blit_texel_size[0] = 1.0f / (float)blitsize[0]; + effects->blit_texel_size[1] = 1.0f / (float)blitsize[1]; + + effects->bloom_blit = DRW_texture_pool_query_2D(blitsize[0], blitsize[1], GPU_R11F_G11F_B10F, + &draw_engine_eevee_type); + + GPU_framebuffer_ensure_config(&fbl->bloom_blit_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->bloom_blit) + }); + + /* Parameters */ + const float threshold = scene_eval->eevee.bloom_threshold; + const float knee = scene_eval->eevee.bloom_knee; + const float intensity = scene_eval->eevee.bloom_intensity; + const float *color = scene_eval->eevee.bloom_color; + const float radius = scene_eval->eevee.bloom_radius; + effects->bloom_clamp = scene_eval->eevee.bloom_clamp; + + /* determine the iteration count */ + const float minDim = (float)MIN2(blitsize[0], blitsize[1]); + const float maxIter = (radius - 8.0f) + log(minDim) / log(2); + const int maxIterInt = effects->bloom_iteration_len = (int)maxIter; + + CLAMP(effects->bloom_iteration_len, 1, MAX_BLOOM_STEP); + + effects->bloom_sample_scale = 0.5f + maxIter - (float)maxIterInt; + effects->bloom_curve_threshold[0] = threshold - knee; + effects->bloom_curve_threshold[1] = knee * 2.0f; + effects->bloom_curve_threshold[2] = 0.25f / max_ff(1e-5f, knee); + effects->bloom_curve_threshold[3] = threshold; + + mul_v3_v3fl(effects->bloom_color, color, intensity); + + /* Downsample buffers */ + copy_v2_v2_int(texsize, blitsize); + for (int i = 0; i < effects->bloom_iteration_len; ++i) { + texsize[0] /= 2; texsize[1] /= 2; + + texsize[0] = MAX2(texsize[0], 2); + texsize[1] = MAX2(texsize[1], 2); + + effects->downsamp_texel_size[i][0] = 1.0f / (float)texsize[0]; + effects->downsamp_texel_size[i][1] = 1.0f / (float)texsize[1]; + + effects->bloom_downsample[i] = DRW_texture_pool_query_2D(texsize[0], texsize[1], GPU_R11F_G11F_B10F, + &draw_engine_eevee_type); + GPU_framebuffer_ensure_config(&fbl->bloom_down_fb[i], { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->bloom_downsample[i]) + }); + } + + /* Upsample buffers */ + copy_v2_v2_int(texsize, blitsize); + for (int i = 0; i < effects->bloom_iteration_len - 1; ++i) { + texsize[0] /= 2; texsize[1] /= 2; + + texsize[0] = MAX2(texsize[0], 2); + texsize[1] = MAX2(texsize[1], 2); + + effects->bloom_upsample[i] = DRW_texture_pool_query_2D(texsize[0], texsize[1], GPU_R11F_G11F_B10F, + &draw_engine_eevee_type); + GPU_framebuffer_ensure_config(&fbl->bloom_accum_fb[i], { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->bloom_upsample[i]) + }); + } + + return EFFECT_BLOOM | EFFECT_POST_BUFFER; + } + + /* Cleanup to release memory */ + GPU_FRAMEBUFFER_FREE_SAFE(fbl->bloom_blit_fb); + + for (int i = 0; i < MAX_BLOOM_STEP - 1; ++i) { + GPU_FRAMEBUFFER_FREE_SAFE(fbl->bloom_down_fb[i]); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->bloom_accum_fb[i]); + } + + return 0; +} + +static DRWShadingGroup *eevee_create_bloom_pass( + const char *name, EEVEE_EffectsInfo *effects, struct GPUShader *sh, DRWPass **pass, bool upsample) +{ + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + + *pass = DRW_pass_create(name, DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create(sh, *pass); + DRW_shgroup_call_add(grp, quad, NULL); + DRW_shgroup_uniform_texture_ref(grp, "sourceBuffer", &effects->unf_source_buffer); + DRW_shgroup_uniform_vec2(grp, "sourceBufferTexelSize", effects->unf_source_texel_size, 1); + if (upsample) { + DRW_shgroup_uniform_texture_ref(grp, "baseBuffer", &effects->unf_base_buffer); + DRW_shgroup_uniform_float(grp, "sampleScale", &effects->bloom_sample_scale, 1); + } + + return grp; +} + +void EEVEE_bloom_cache_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_BLOOM) != 0) { + /** Bloom algorithm + * + * Overview : + * - Downsample the color buffer doing a small blur during each step. + * - Accumulate bloom color using previously downsampled color buffers + * and do an upsample blur for each new accumulated layer. + * - Finally add accumulation buffer onto the source color buffer. + * + * [1/1] is original copy resolution (can be half or quater res for performance) + * + * [DOWNSAMPLE CHAIN] [UPSAMPLE CHAIN] + * + * Source Color ── [Blit] ──> Bright Color Extract [1/1] Final Color + * | Λ + * [Downsample First] Source Color ─> + [Resolve] + * v | + * Color Downsampled [1/2] ────────────> + Accumulation Buffer [1/2] + * | Λ + * ─── ─── + * Repeat Repeat + * ─── ─── + * v | + * Color Downsampled [1/N-1] ──────────> + Accumulation Buffer [1/N-1] + * | Λ + * [Downsample] [Upsample] + * v | + * Color Downsampled [1/N] ─────────────────────────┘ + **/ + DRWShadingGroup *grp; + const bool use_highres = true; + const bool use_antiflicker = true; + eevee_create_bloom_pass("Bloom Downsample First", effects, e_data.bloom_downsample_sh[use_antiflicker], &psl->bloom_downsample_first, false); + eevee_create_bloom_pass("Bloom Downsample", effects, e_data.bloom_downsample_sh[0], &psl->bloom_downsample, false); + eevee_create_bloom_pass("Bloom Upsample", effects, e_data.bloom_upsample_sh[use_highres], &psl->bloom_upsample, true); + + grp = eevee_create_bloom_pass("Bloom Blit", effects, e_data.bloom_blit_sh[use_antiflicker], &psl->bloom_blit, false); + DRW_shgroup_uniform_vec4(grp, "curveThreshold", effects->bloom_curve_threshold, 1); + DRW_shgroup_uniform_float(grp, "clampIntensity", &effects->bloom_clamp, 1); + + grp = eevee_create_bloom_pass("Bloom Resolve", effects, e_data.bloom_resolve_sh[use_highres], &psl->bloom_resolve, true); + DRW_shgroup_uniform_vec3(grp, "bloomColor", effects->bloom_color, 1); + } +} + +void EEVEE_bloom_draw(EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + /* Bloom */ + if ((effects->enabled_effects & EFFECT_BLOOM) != 0) { + struct GPUTexture *last; + + /* Extract bright pixels */ + copy_v2_v2(effects->unf_source_texel_size, effects->source_texel_size); + effects->unf_source_buffer = effects->source_buffer; + + GPU_framebuffer_bind(fbl->bloom_blit_fb); + DRW_draw_pass(psl->bloom_blit); + + /* Downsample */ + copy_v2_v2(effects->unf_source_texel_size, effects->blit_texel_size); + effects->unf_source_buffer = effects->bloom_blit; + + GPU_framebuffer_bind(fbl->bloom_down_fb[0]); + DRW_draw_pass(psl->bloom_downsample_first); + + last = effects->bloom_downsample[0]; + + for (int i = 1; i < effects->bloom_iteration_len; ++i) { + copy_v2_v2(effects->unf_source_texel_size, effects->downsamp_texel_size[i - 1]); + effects->unf_source_buffer = last; + + GPU_framebuffer_bind(fbl->bloom_down_fb[i]); + DRW_draw_pass(psl->bloom_downsample); + + /* Used in next loop */ + last = effects->bloom_downsample[i]; + } + + /* Upsample and accumulate */ + for (int i = effects->bloom_iteration_len - 2; i >= 0; --i) { + copy_v2_v2(effects->unf_source_texel_size, effects->downsamp_texel_size[i]); + effects->unf_source_buffer = effects->bloom_downsample[i]; + effects->unf_base_buffer = last; + + GPU_framebuffer_bind(fbl->bloom_accum_fb[i]); + DRW_draw_pass(psl->bloom_upsample); + + last = effects->bloom_upsample[i]; + } + + /* Resolve */ + copy_v2_v2(effects->unf_source_texel_size, effects->downsamp_texel_size[0]); + effects->unf_source_buffer = last; + effects->unf_base_buffer = effects->source_buffer; + + GPU_framebuffer_bind(effects->target_buffer); + DRW_draw_pass(psl->bloom_resolve); + SWAP_BUFFERS(); + } +} + +void EEVEE_bloom_free(void) +{ + for (int i = 0; i < 2; ++i) { + DRW_SHADER_FREE_SAFE(e_data.bloom_blit_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.bloom_downsample_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.bloom_upsample_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.bloom_resolve_sh[i]); + } +} diff --git a/source/blender/draw/engines/eevee/eevee_data.c b/source/blender/draw/engines/eevee/eevee_data.c new file mode 100644 index 00000000000..636e532555f --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_data.c @@ -0,0 +1,208 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_data.c + * \ingroup draw_engine + * + * All specific data handler for Objects, Lights, ViewLayers, ... + */ + +#include "DRW_render.h" + +#include "eevee_private.h" +#include "eevee_lightcache.h" + +void EEVEE_view_layer_data_free(void *storage) +{ + EEVEE_ViewLayerData *sldata = (EEVEE_ViewLayerData *)storage; + + /* Lights */ + MEM_SAFE_FREE(sldata->lamps); + DRW_UBO_FREE_SAFE(sldata->light_ubo); + DRW_UBO_FREE_SAFE(sldata->shadow_ubo); + DRW_UBO_FREE_SAFE(sldata->shadow_render_ubo); + GPU_FRAMEBUFFER_FREE_SAFE(sldata->shadow_cube_target_fb); + GPU_FRAMEBUFFER_FREE_SAFE(sldata->shadow_cube_store_fb); + GPU_FRAMEBUFFER_FREE_SAFE(sldata->shadow_cascade_target_fb); + GPU_FRAMEBUFFER_FREE_SAFE(sldata->shadow_cascade_store_fb); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_target); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_blur); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_pool); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_target); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_blur); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_pool); + MEM_SAFE_FREE(sldata->shcasters_buffers[0].shadow_casters); + MEM_SAFE_FREE(sldata->shcasters_buffers[0].flags); + MEM_SAFE_FREE(sldata->shcasters_buffers[1].shadow_casters); + MEM_SAFE_FREE(sldata->shcasters_buffers[1].flags); + + if (sldata->fallback_lightcache) { + EEVEE_lightcache_free(sldata->fallback_lightcache); + sldata->fallback_lightcache = NULL; + } + + /* Probes */ + MEM_SAFE_FREE(sldata->probes); + DRW_UBO_FREE_SAFE(sldata->probe_ubo); + DRW_UBO_FREE_SAFE(sldata->grid_ubo); + DRW_UBO_FREE_SAFE(sldata->planar_ubo); + DRW_UBO_FREE_SAFE(sldata->common_ubo); + DRW_UBO_FREE_SAFE(sldata->clip_ubo); +} + +EEVEE_ViewLayerData *EEVEE_view_layer_data_get(void) +{ + return (EEVEE_ViewLayerData *)DRW_view_layer_engine_data_get( + &draw_engine_eevee_type); +} + +EEVEE_ViewLayerData *EEVEE_view_layer_data_ensure_ex(struct ViewLayer *view_layer) +{ + EEVEE_ViewLayerData **sldata = (EEVEE_ViewLayerData **)DRW_view_layer_engine_data_ensure_ex( + view_layer, &draw_engine_eevee_type, &EEVEE_view_layer_data_free); + + if (*sldata == NULL) { + *sldata = MEM_callocN(sizeof(**sldata), "EEVEE_ViewLayerData"); + } + + return *sldata; +} + +EEVEE_ViewLayerData *EEVEE_view_layer_data_ensure(void) +{ + EEVEE_ViewLayerData **sldata = (EEVEE_ViewLayerData **)DRW_view_layer_engine_data_ensure( + &draw_engine_eevee_type, &EEVEE_view_layer_data_free); + + if (*sldata == NULL) { + *sldata = MEM_callocN(sizeof(**sldata), "EEVEE_ViewLayerData"); + } + + return *sldata; +} + +/* Object data. */ + +static void eevee_object_data_init(DrawData *dd) +{ + EEVEE_ObjectEngineData *eevee_data = (EEVEE_ObjectEngineData *)dd; + eevee_data->shadow_caster_id = -1; +} + +EEVEE_ObjectEngineData *EEVEE_object_data_get(Object *ob) +{ + if (ELEM(ob->type, OB_LIGHTPROBE, OB_LAMP)) { + return NULL; + } + return (EEVEE_ObjectEngineData *)DRW_drawdata_get( + &ob->id, &draw_engine_eevee_type); +} + +EEVEE_ObjectEngineData *EEVEE_object_data_ensure(Object *ob) +{ + BLI_assert(!ELEM(ob->type, OB_LIGHTPROBE, OB_LAMP)); + return (EEVEE_ObjectEngineData *)DRW_drawdata_ensure( + &ob->id, + &draw_engine_eevee_type, + sizeof(EEVEE_ObjectEngineData), + eevee_object_data_init, + NULL); +} + +/* Light probe data. */ + +static void eevee_lightprobe_data_init(DrawData *dd) +{ + EEVEE_LightProbeEngineData *ped = (EEVEE_LightProbeEngineData *)dd; + ped->need_update = false; +} + +EEVEE_LightProbeEngineData *EEVEE_lightprobe_data_get(Object *ob) +{ + if (ob->type != OB_LIGHTPROBE) { + return NULL; + } + return (EEVEE_LightProbeEngineData *)DRW_drawdata_get( + &ob->id, &draw_engine_eevee_type); +} + +EEVEE_LightProbeEngineData *EEVEE_lightprobe_data_ensure(Object *ob) +{ + BLI_assert(ob->type == OB_LIGHTPROBE); + return (EEVEE_LightProbeEngineData *)DRW_drawdata_ensure( + &ob->id, + &draw_engine_eevee_type, + sizeof(EEVEE_LightProbeEngineData), + eevee_lightprobe_data_init, + NULL); +} + +/* Lamp data. */ + +static void eevee_lamp_data_init(DrawData *dd) +{ + EEVEE_LampEngineData *led = (EEVEE_LampEngineData *)dd; + led->need_update = true; + led->prev_cube_shadow_id = -1; +} + +EEVEE_LampEngineData *EEVEE_lamp_data_get(Object *ob) +{ + if (ob->type != OB_LAMP) { + return NULL; + } + return (EEVEE_LampEngineData *)DRW_drawdata_get( + &ob->id, &draw_engine_eevee_type); +} + +EEVEE_LampEngineData *EEVEE_lamp_data_ensure(Object *ob) +{ + BLI_assert(ob->type == OB_LAMP); + return (EEVEE_LampEngineData *)DRW_drawdata_ensure( + &ob->id, + &draw_engine_eevee_type, + sizeof(EEVEE_LampEngineData), + eevee_lamp_data_init, + NULL); +} + +/* World data. */ + +static void eevee_world_data_init(DrawData *dd) +{ + EEVEE_WorldEngineData *wed = (EEVEE_WorldEngineData *)dd; + wed->dd.recalc |= 1; +} + +EEVEE_WorldEngineData *EEVEE_world_data_get(World *wo) +{ + return (EEVEE_WorldEngineData *)DRW_drawdata_get( + &wo->id, &draw_engine_eevee_type); +} + +EEVEE_WorldEngineData *EEVEE_world_data_ensure(World *wo) +{ + return (EEVEE_WorldEngineData *)DRW_drawdata_ensure( + &wo->id, + &draw_engine_eevee_type, + sizeof(EEVEE_WorldEngineData), + eevee_world_data_init, + NULL); +} diff --git a/source/blender/draw/engines/eevee/eevee_depth_of_field.c b/source/blender/draw/engines/eevee/eevee_depth_of_field.c new file mode 100644 index 00000000000..602654068ff --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_depth_of_field.c @@ -0,0 +1,289 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_depth_of_field.c + * \ingroup draw_engine + * + * Depth of field post process effect. + */ + +#include "DRW_render.h" + +#include "BLI_dynstr.h" +#include "BLI_rand.h" + +#include "DNA_anim_types.h" +#include "DNA_camera_types.h" +#include "DNA_object_force_types.h" +#include "DNA_screen_types.h" +#include "DNA_view3d_types.h" +#include "DNA_world_types.h" + +#include "BKE_global.h" /* for G.debug_value */ +#include "BKE_camera.h" +#include "BKE_mesh.h" +#include "BKE_object.h" +#include "BKE_animsys.h" +#include "BKE_screen.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" +#include "GPU_extensions.h" +#include "GPU_framebuffer.h" +#include "GPU_texture.h" + +#include "ED_screen.h" + +static struct { + /* Depth Of Field */ + struct GPUShader *dof_downsample_sh[2]; + struct GPUShader *dof_scatter_sh[2]; + struct GPUShader *dof_resolve_sh[2]; +} e_data = {{NULL}}; /* Engine data */ + +extern char datatoc_effect_dof_vert_glsl[]; +extern char datatoc_effect_dof_frag_glsl[]; + +static void eevee_create_shader_depth_of_field(const bool use_alpha) +{ + e_data.dof_downsample_sh[use_alpha] = DRW_shader_create_fullscreen( + datatoc_effect_dof_frag_glsl, use_alpha ? + "#define USE_ALPHA_DOF\n" + "#define STEP_DOWNSAMPLE\n" : + "#define STEP_DOWNSAMPLE\n"); + e_data.dof_scatter_sh[use_alpha] = DRW_shader_create( + datatoc_effect_dof_vert_glsl, NULL, + datatoc_effect_dof_frag_glsl, use_alpha ? + "#define USE_ALPHA_DOF\n" + "#define STEP_SCATTER\n" : + "#define STEP_SCATTER\n"); + e_data.dof_resolve_sh[use_alpha] = DRW_shader_create_fullscreen( + datatoc_effect_dof_frag_glsl, use_alpha ? + "#define USE_ALPHA_DOF\n" + "#define STEP_RESOLVE\n" : + "#define STEP_RESOLVE\n"); +} + +int EEVEE_depth_of_field_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata, Object *camera) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_EffectsInfo *effects = stl->effects; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (scene_eval->eevee.flag & SCE_EEVEE_DOF_ENABLED) { + RegionView3D *rv3d = draw_ctx->rv3d; + const bool use_alpha = !DRW_state_draw_background(); + + if (!e_data.dof_downsample_sh[use_alpha]) { + eevee_create_shader_depth_of_field(use_alpha); + } + + if (camera) { + const float *viewport_size = DRW_viewport_size_get(); + Camera *cam = (Camera *)camera->data; + + /* Retrieve Near and Far distance */ + effects->dof_near_far[0] = -cam->clipsta; + effects->dof_near_far[1] = -cam->clipend; + + int buffer_size[2] = {(int)viewport_size[0] / 2, (int)viewport_size[1] / 2}; + + GPUTextureFormat down_format = DRW_state_draw_background() ? GPU_R11F_G11F_B10F : GPU_RGBA16F; + + effects->dof_down_near = DRW_texture_pool_query_2D(buffer_size[0], buffer_size[1], down_format, + &draw_engine_eevee_type); + effects->dof_down_far = DRW_texture_pool_query_2D(buffer_size[0], buffer_size[1], down_format, + &draw_engine_eevee_type); + effects->dof_coc = DRW_texture_pool_query_2D(buffer_size[0], buffer_size[1], GPU_RG16F, + &draw_engine_eevee_type); + + GPU_framebuffer_ensure_config(&fbl->dof_down_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->dof_down_near), + GPU_ATTACHMENT_TEXTURE(effects->dof_down_far), + GPU_ATTACHMENT_TEXTURE(effects->dof_coc) + }); + + /* Go full 32bits for rendering and reduce the color artifacts. */ + GPUTextureFormat fb_format = DRW_state_is_image_render() ? GPU_RGBA32F : GPU_RGBA16F; + + effects->dof_blur = DRW_texture_pool_query_2D(buffer_size[0] * 2, buffer_size[1], fb_format, + &draw_engine_eevee_type); + + GPU_framebuffer_ensure_config(&fbl->dof_scatter_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->dof_blur), + }); + + if (!DRW_state_draw_background()) { + effects->dof_blur_alpha = DRW_texture_pool_query_2D(buffer_size[0] * 2, buffer_size[1], GPU_R32F, + &draw_engine_eevee_type); + GPU_framebuffer_texture_attach(fbl->dof_scatter_fb, effects->dof_blur_alpha, 1, 0); + } + + /* Parameters */ + /* TODO UI Options */ + float fstop = cam->gpu_dof.fstop; + float blades = cam->gpu_dof.num_blades; + float rotation = cam->gpu_dof.rotation; + float ratio = 1.0f / cam->gpu_dof.ratio; + float sensor = BKE_camera_sensor_size(cam->sensor_fit, cam->sensor_x, cam->sensor_y); + float focus_dist = BKE_camera_object_dof_distance(camera); + float focal_len = cam->lens; + + /* this is factor that converts to the scene scale. focal length and sensor are expressed in mm + * unit.scale_length is how many meters per blender unit we have. We want to convert to blender units though + * because the shader reads coordinates in world space, which is in blender units. + * Note however that focus_distance is already in blender units and shall not be scaled here (see T48157). */ + float scale = (scene_eval->unit.system) ? scene_eval->unit.scale_length : 1.0f; + float scale_camera = 0.001f / scale; + /* we want radius here for the aperture number */ + float aperture = 0.5f * scale_camera * focal_len / fstop; + float focal_len_scaled = scale_camera * focal_len; + float sensor_scaled = scale_camera * sensor; + + if (rv3d != NULL) { + sensor_scaled *= rv3d->viewcamtexcofac[0]; + } + + effects->dof_params[0] = aperture * fabsf(focal_len_scaled / (focus_dist - focal_len_scaled)); + effects->dof_params[1] = -focus_dist; + effects->dof_params[2] = viewport_size[0] / sensor_scaled; + effects->dof_bokeh[0] = rotation; + effects->dof_bokeh[1] = ratio; + effects->dof_bokeh[2] = scene_eval->eevee.bokeh_max_size; + + /* Precompute values to save instructions in fragment shader. */ + effects->dof_bokeh_sides[0] = blades; + effects->dof_bokeh_sides[1] = 2.0f * M_PI / blades; + effects->dof_bokeh_sides[2] = blades / (2.0f * M_PI); + effects->dof_bokeh_sides[3] = cosf(M_PI / blades); + + return EFFECT_DOF | EFFECT_POST_BUFFER; + } + } + + /* Cleanup to release memory */ + GPU_FRAMEBUFFER_FREE_SAFE(fbl->dof_down_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->dof_scatter_fb); + + return 0; +} + +void EEVEE_depth_of_field_cache_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + if ((effects->enabled_effects & EFFECT_DOF) != 0) { + /** Depth of Field algorithm + * + * Overview : + * - Downsample the color buffer into 2 buffers weighted with + * CoC values. Also output CoC into a texture. + * - Shoot quads for every pixel and expand it depending on the CoC. + * Do one pass for near Dof and one pass for far Dof. + * - Finally composite the 2 blurred buffers with the original render. + **/ + DRWShadingGroup *grp; + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + const bool use_alpha = !DRW_state_draw_background(); + + psl->dof_down = DRW_pass_create("DoF Downsample", DRW_STATE_WRITE_COLOR); + + grp = DRW_shgroup_create(e_data.dof_downsample_sh[use_alpha], psl->dof_down); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &effects->source_buffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_vec2(grp, "nearFar", effects->dof_near_far, 1); + DRW_shgroup_uniform_vec3(grp, "dofParams", effects->dof_params, 1); + DRW_shgroup_call_add(grp, quad, NULL); + + psl->dof_scatter = DRW_pass_create("DoF Scatter", DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE_FULL); + + /* This create an empty batch of N triangles to be positioned + * by the vertex shader 0.4ms against 6ms with instancing */ + const float *viewport_size = DRW_viewport_size_get(); + const int sprite_len = ((int)viewport_size[0] / 2) * ((int)viewport_size[1] / 2); /* brackets matters */ + grp = DRW_shgroup_empty_tri_batch_create(e_data.dof_scatter_sh[use_alpha], psl->dof_scatter, sprite_len); + DRW_shgroup_uniform_texture_ref(grp, "nearBuffer", &effects->dof_down_near); + DRW_shgroup_uniform_texture_ref(grp, "farBuffer", &effects->dof_down_far); + DRW_shgroup_uniform_texture_ref(grp, "cocBuffer", &effects->dof_coc); + DRW_shgroup_uniform_vec4(grp, "bokehParams", effects->dof_bokeh, 2); + + psl->dof_resolve = DRW_pass_create("DoF Resolve", DRW_STATE_WRITE_COLOR); + + grp = DRW_shgroup_create(e_data.dof_resolve_sh[use_alpha], psl->dof_resolve); + DRW_shgroup_uniform_texture_ref(grp, "scatterBuffer", &effects->dof_blur); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &effects->source_buffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_vec2(grp, "nearFar", effects->dof_near_far, 1); + DRW_shgroup_uniform_vec3(grp, "dofParams", effects->dof_params, 1); + DRW_shgroup_call_add(grp, quad, NULL); + + if (use_alpha) { + DRW_shgroup_uniform_texture_ref(grp, "scatterAlphaBuffer", &effects->dof_blur_alpha); + } + } +} + +void EEVEE_depth_of_field_draw(EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + /* Depth Of Field */ + if ((effects->enabled_effects & EFFECT_DOF) != 0) { + float clear_col[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + + /* Downsample */ + GPU_framebuffer_bind(fbl->dof_down_fb); + DRW_draw_pass(psl->dof_down); + + /* Scatter */ + GPU_framebuffer_bind(fbl->dof_scatter_fb); + GPU_framebuffer_clear_color(fbl->dof_scatter_fb, clear_col); + DRW_draw_pass(psl->dof_scatter); + + /* Resolve */ + GPU_framebuffer_bind(effects->target_buffer); + DRW_draw_pass(psl->dof_resolve); + SWAP_BUFFERS(); + } +} + +void EEVEE_depth_of_field_free(void) +{ + for (int i = 0; i < 2; ++i) { + DRW_SHADER_FREE_SAFE(e_data.dof_downsample_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.dof_scatter_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.dof_resolve_sh[i]); + } +} diff --git a/source/blender/draw/engines/eevee/eevee_effects.c b/source/blender/draw/engines/eevee/eevee_effects.c new file mode 100644 index 00000000000..48a73ccef18 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_effects.c @@ -0,0 +1,578 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_effects.c + * \ingroup draw_engine + * + * Gather all screen space effects technique such as Bloom, Motion Blur, DoF, SSAO, SSR, ... + */ + +#include "DRW_render.h" + +#include "BKE_global.h" /* for G.debug_value */ + +#include "BLI_string_utils.h" + +#include "eevee_private.h" +#include "GPU_texture.h" +#include "GPU_extensions.h" +#include "GPU_state.h" + +static struct { + /* Downsample Depth */ + struct GPUShader *minz_downlevel_sh; + struct GPUShader *maxz_downlevel_sh; + struct GPUShader *minz_downdepth_sh; + struct GPUShader *maxz_downdepth_sh; + struct GPUShader *minz_downdepth_layer_sh; + struct GPUShader *maxz_downdepth_layer_sh; + struct GPUShader *maxz_copydepth_layer_sh; + struct GPUShader *minz_copydepth_sh; + struct GPUShader *maxz_copydepth_sh; + + /* Simple Downsample */ + struct GPUShader *downsample_sh; + struct GPUShader *downsample_cube_sh; + + /* Theses are just references, not actually allocated */ + struct GPUTexture *depth_src; + struct GPUTexture *color_src; + + int depth_src_layer; + float cube_texel_size; +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_effect_minmaxz_frag_glsl[]; +extern char datatoc_effect_downsample_frag_glsl[]; +extern char datatoc_effect_downsample_cube_frag_glsl[]; +extern char datatoc_lightprobe_vert_glsl[]; +extern char datatoc_lightprobe_geom_glsl[]; + + +static void eevee_create_shader_downsample(void) +{ + e_data.downsample_sh = DRW_shader_create_fullscreen(datatoc_effect_downsample_frag_glsl, NULL); + e_data.downsample_cube_sh = DRW_shader_create( + datatoc_lightprobe_vert_glsl, + datatoc_lightprobe_geom_glsl, + datatoc_effect_downsample_cube_frag_glsl, NULL); + + e_data.minz_downlevel_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MIN_PASS\n"); + e_data.maxz_downlevel_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MAX_PASS\n"); + e_data.minz_downdepth_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MIN_PASS\n"); + e_data.maxz_downdepth_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MAX_PASS\n"); + e_data.minz_downdepth_layer_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MIN_PASS\n" + "#define LAYERED\n"); + e_data.maxz_downdepth_layer_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MAX_PASS\n" + "#define LAYERED\n"); + e_data.maxz_copydepth_layer_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MAX_PASS\n" + "#define COPY_DEPTH\n" + "#define LAYERED\n"); + e_data.minz_copydepth_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MIN_PASS\n" + "#define COPY_DEPTH\n"); + e_data.maxz_copydepth_sh = DRW_shader_create_fullscreen( + datatoc_effect_minmaxz_frag_glsl, + "#define MAX_PASS\n" + "#define COPY_DEPTH\n"); +} + +#define SETUP_BUFFER(tex, fb, fb_color) { \ + GPUTextureFormat format = (DRW_state_is_scene_render()) ? GPU_RGBA32F : GPU_RGBA16F; \ + DRW_texture_ensure_fullscreen_2D(&tex, format, DRW_TEX_FILTER | DRW_TEX_MIPMAP); \ + GPU_framebuffer_ensure_config(&fb, { \ + GPU_ATTACHMENT_TEXTURE(dtxl->depth), \ + GPU_ATTACHMENT_TEXTURE(tex), \ + }); \ + GPU_framebuffer_ensure_config(&fb_color, { \ + GPU_ATTACHMENT_NONE, \ + GPU_ATTACHMENT_TEXTURE(tex), \ + }); \ +} + +#define CLEANUP_BUFFER(tex, fb, fb_color) { \ + /* Cleanup to release memory */ \ + DRW_TEXTURE_FREE_SAFE(tex); \ + GPU_FRAMEBUFFER_FREE_SAFE(fb); \ + GPU_FRAMEBUFFER_FREE_SAFE(fb_color); \ +} + +void EEVEE_effects_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Object *camera, const bool minimal) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + + const float *viewport_size = DRW_viewport_size_get(); + int size_fs[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + + /* Shaders */ + if (!e_data.downsample_sh) { + eevee_create_shader_downsample(); + } + + if (!stl->effects) { + stl->effects = MEM_callocN(sizeof(EEVEE_EffectsInfo), "EEVEE_EffectsInfo"); + } + + effects = stl->effects; + + effects->enabled_effects = 0; + effects->enabled_effects |= (G.debug_value == 9) ? EFFECT_VELOCITY_BUFFER : 0; + effects->enabled_effects |= EEVEE_motion_blur_init(sldata, vedata, camera); + effects->enabled_effects |= EEVEE_bloom_init(sldata, vedata); + effects->enabled_effects |= EEVEE_depth_of_field_init(sldata, vedata, camera); + effects->enabled_effects |= EEVEE_temporal_sampling_init(sldata, vedata); + effects->enabled_effects |= EEVEE_occlusion_init(sldata, vedata); + effects->enabled_effects |= EEVEE_subsurface_init(sldata, vedata); + effects->enabled_effects |= EEVEE_screen_raytrace_init(sldata, vedata); + effects->enabled_effects |= EEVEE_volumes_init(sldata, vedata); + + /* Force normal buffer creation. */ + if (DRW_state_is_image_render() && !minimal && + (view_layer->passflag & SCE_PASS_NORMAL) != 0) + { + effects->enabled_effects |= EFFECT_NORMAL_BUFFER; + } + + /** + * Ping Pong buffer + */ + if ((effects->enabled_effects & EFFECT_POST_BUFFER) != 0) { + SETUP_BUFFER(txl->color_post, fbl->effect_fb, fbl->effect_color_fb); + } + else { + CLEANUP_BUFFER(txl->color_post, fbl->effect_fb, fbl->effect_color_fb); + } + + /** + * MinMax Pyramid + */ + const bool half_res_hiz = true; + int size[2], div; + common_data->hiz_mip_offset = (half_res_hiz) ? 1 : 0; + div = (half_res_hiz) ? 2 : 1; + size[0] = max_ii(size_fs[0] / div, 1); + size[1] = max_ii(size_fs[1] / div, 1); + + if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_ANY, GPU_DRIVER_ANY)) { + /* Intel gpu seems to have problem rendering to only depth format */ + DRW_texture_ensure_2D(&txl->maxzbuffer, size[0], size[1], GPU_R32F, DRW_TEX_MIPMAP); + } + else { + DRW_texture_ensure_2D(&txl->maxzbuffer, size[0], size[1], GPU_DEPTH_COMPONENT24, DRW_TEX_MIPMAP); + } + + if (fbl->downsample_fb == NULL) { + fbl->downsample_fb = GPU_framebuffer_create(); + } + + /** + * Compute Mipmap texel alignment. + */ + for (int i = 0; i < 10; ++i) { + int mip_size[2]; + GPU_texture_get_mipmap_size(txl->color, i, mip_size); + common_data->mip_ratio[i][0] = viewport_size[0] / (mip_size[0] * powf(2.0f, i)); + common_data->mip_ratio[i][1] = viewport_size[1] / (mip_size[1] * powf(2.0f, i)); + } + + /** + * Normal buffer for deferred passes. + */ + if ((effects->enabled_effects & EFFECT_NORMAL_BUFFER) != 0) { + effects->ssr_normal_input = DRW_texture_pool_query_2D(size_fs[0], size_fs[1], GPU_RG16, + &draw_engine_eevee_type); + + GPU_framebuffer_texture_attach(fbl->main_fb, effects->ssr_normal_input, 1, 0); + } + else { + effects->ssr_normal_input = NULL; + } + + /** + * Motion vector buffer for correct TAA / motion blur. + */ + if ((effects->enabled_effects & EFFECT_VELOCITY_BUFFER) != 0) { + effects->velocity_tx = DRW_texture_pool_query_2D(size_fs[0], size_fs[1], GPU_RG16, + &draw_engine_eevee_type); + + /* TODO output objects velocity during the mainpass. */ + // GPU_framebuffer_texture_attach(fbl->main_fb, effects->velocity_tx, 1, 0); + + GPU_framebuffer_ensure_config(&fbl->velocity_resolve_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->velocity_tx) + }); + } + else { + effects->velocity_tx = NULL; + } + + /** + * Setup depth double buffer. + */ + if ((effects->enabled_effects & EFFECT_DEPTH_DOUBLE_BUFFER) != 0) { + DRW_texture_ensure_fullscreen_2D(&txl->depth_double_buffer, GPU_DEPTH24_STENCIL8, 0); + + GPU_framebuffer_ensure_config(&fbl->double_buffer_depth_fb, { + GPU_ATTACHMENT_TEXTURE(txl->depth_double_buffer) + }); + } + else { + /* Cleanup to release memory */ + DRW_TEXTURE_FREE_SAFE(txl->depth_double_buffer); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->double_buffer_depth_fb); + } + + /** + * Setup double buffer so we can access last frame as it was before post processes. + */ + if ((effects->enabled_effects & EFFECT_DOUBLE_BUFFER) != 0) { + SETUP_BUFFER(txl->color_double_buffer, fbl->double_buffer_fb, fbl->double_buffer_color_fb); + } + else { + CLEANUP_BUFFER(txl->color_double_buffer, fbl->double_buffer_fb, fbl->double_buffer_color_fb); + } + + if ((effects->enabled_effects & (EFFECT_TAA | EFFECT_TAA_REPROJECT)) != 0) { + SETUP_BUFFER(txl->taa_history, fbl->taa_history_fb, fbl->taa_history_color_fb); + } + else { + CLEANUP_BUFFER(txl->taa_history, fbl->taa_history_fb, fbl->taa_history_color_fb); + } +} + +void EEVEE_effects_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + int downsample_write = DRW_STATE_WRITE_DEPTH; + + /* Intel gpu seems to have problem rendering to only depth format. + * Use color texture instead. */ + if (GPU_type_matches(GPU_DEVICE_INTEL, GPU_OS_ANY, GPU_DRIVER_ANY)) { + downsample_write = DRW_STATE_WRITE_COLOR; + } + + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + + { + psl->color_downsample_ps = DRW_pass_create( + "Downsample", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.downsample_sh, psl->color_downsample_ps); + DRW_shgroup_uniform_texture_ref(grp, "source", &e_data.color_src); + DRW_shgroup_uniform_float(grp, "fireflyFactor", &sldata->common_data.ssr_firefly_fac, 1); + DRW_shgroup_call_add(grp, quad, NULL); + } + + { + static int zero = 0; + static uint six = 6; + psl->color_downsample_cube_ps = DRW_pass_create( + "Downsample Cube", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.downsample_cube_sh, psl->color_downsample_cube_ps); + DRW_shgroup_uniform_texture_ref(grp, "source", &e_data.color_src); + DRW_shgroup_uniform_float(grp, "texelSize", &e_data.cube_texel_size, 1); + DRW_shgroup_uniform_int(grp, "Layer", &zero, 1); + DRW_shgroup_call_instances_add(grp, quad, NULL, &six); + } + + { + /* Perform min/max downsample */ + DRWShadingGroup *grp; + + psl->maxz_downlevel_ps = DRW_pass_create( + "HiZ Max Down Level", downsample_write | DRW_STATE_DEPTH_ALWAYS); + grp = DRW_shgroup_create(e_data.maxz_downlevel_sh, psl->maxz_downlevel_ps); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &txl->maxzbuffer); + DRW_shgroup_call_add(grp, quad, NULL); + + /* Copy depth buffer to halfres top level of HiZ */ + + psl->maxz_downdepth_ps = DRW_pass_create( + "HiZ Max Copy Depth Halfres", downsample_write | DRW_STATE_DEPTH_ALWAYS); + grp = DRW_shgroup_create(e_data.maxz_downdepth_sh, psl->maxz_downdepth_ps); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_call_add(grp, quad, NULL); + + psl->maxz_downdepth_layer_ps = DRW_pass_create( + "HiZ Max Copy DepthLayer Halfres", downsample_write | DRW_STATE_DEPTH_ALWAYS); + grp = DRW_shgroup_create(e_data.maxz_downdepth_layer_sh, psl->maxz_downdepth_layer_ps); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_uniform_int(grp, "depthLayer", &e_data.depth_src_layer, 1); + DRW_shgroup_call_add(grp, quad, NULL); + + psl->maxz_copydepth_ps = DRW_pass_create( + "HiZ Max Copy Depth Fullres", downsample_write | DRW_STATE_DEPTH_ALWAYS); + grp = DRW_shgroup_create(e_data.maxz_copydepth_sh, psl->maxz_copydepth_ps); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_call_add(grp, quad, NULL); + + psl->maxz_copydepth_layer_ps = DRW_pass_create( + "HiZ Max Copy DepthLayer Halfres", downsample_write | DRW_STATE_DEPTH_ALWAYS); + grp = DRW_shgroup_create(e_data.maxz_copydepth_layer_sh, psl->maxz_copydepth_layer_ps); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_uniform_int(grp, "depthLayer", &e_data.depth_src_layer, 1); + DRW_shgroup_call_add(grp, quad, NULL); + } + + if ((effects->enabled_effects & EFFECT_VELOCITY_BUFFER) != 0) { + /* This pass compute camera motions to the non moving objects. */ + psl->velocity_resolve = DRW_pass_create( + "Velocity Resolve", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(EEVEE_shaders_velocity_resolve_sh_get(), psl->velocity_resolve); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_mat4(grp, "currPersinv", effects->velocity_curr_persinv); + DRW_shgroup_uniform_mat4(grp, "pastPersmat", effects->velocity_past_persmat); + DRW_shgroup_call_add(grp, quad, NULL); + } +} + +#if 0 /* Not required for now */ +static void min_downsample_cb(void *vedata, int UNUSED(level)) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + DRW_draw_pass(psl->minz_downlevel_ps); +} +#endif + +static void max_downsample_cb(void *vedata, int UNUSED(level)) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + DRW_draw_pass(psl->maxz_downlevel_ps); +} + +static void simple_downsample_cb(void *vedata, int UNUSED(level)) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + DRW_draw_pass(psl->color_downsample_ps); +} + +static void simple_downsample_cube_cb(void *vedata, int level) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + e_data.cube_texel_size = (float)(1 << level) / (float)GPU_texture_width(e_data.color_src); + DRW_draw_pass(psl->color_downsample_cube_ps); +} + +void EEVEE_create_minmax_buffer(EEVEE_Data *vedata, GPUTexture *depth_src, int layer) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + + e_data.depth_src = depth_src; + e_data.depth_src_layer = layer; + +#if 0 /* Not required for now */ + DRW_stats_group_start("Min buffer"); + /* Copy depth buffer to min texture top level */ + GPU_framebuffer_texture_attach(fbl->downsample_fb, stl->g_data->minzbuffer, 0, 0); + GPU_framebuffer_bind(fbl->downsample_fb); + if (layer >= 0) { + DRW_draw_pass(psl->minz_downdepth_layer_ps); + } + else { + DRW_draw_pass(psl->minz_downdepth_ps); + } + GPU_framebuffer_texture_detach(stl->g_data->minzbuffer); + + /* Create lower levels */ + GPU_framebuffer_recursive_downsample(fbl->downsample_fb, stl->g_data->minzbuffer, 8, &min_downsample_cb, vedata); + DRW_stats_group_end(); +#endif + int minmax_size[3], depth_size[3]; + GPU_texture_get_mipmap_size(depth_src, 0, depth_size); + GPU_texture_get_mipmap_size(txl->maxzbuffer, 0, minmax_size); + bool is_full_res_minmaxz = (minmax_size[0] == depth_size[0] && minmax_size[1] == depth_size[1]); + + DRW_stats_group_start("Max buffer"); + /* Copy depth buffer to max texture top level */ + GPU_framebuffer_texture_attach(fbl->downsample_fb, txl->maxzbuffer, 0, 0); + GPU_framebuffer_bind(fbl->downsample_fb); + if (layer >= 0) { + if (is_full_res_minmaxz) { + DRW_draw_pass(psl->maxz_copydepth_layer_ps); + } + else { + DRW_draw_pass(psl->maxz_downdepth_layer_ps); + } + } + else { + if (is_full_res_minmaxz) { + DRW_draw_pass(psl->maxz_copydepth_ps); + } + else { + DRW_draw_pass(psl->maxz_downdepth_ps); + } + } + + /* Create lower levels */ + GPU_framebuffer_recursive_downsample(fbl->downsample_fb, 8, &max_downsample_cb, vedata); + GPU_framebuffer_texture_detach(fbl->downsample_fb, txl->maxzbuffer); + DRW_stats_group_end(); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + + if (GPU_mip_render_workaround()) { + /* Fix dot corruption on intel HD5XX/HD6XX series. + * It seems affected drivers are the same that needs + * GPU_mip_render_workaround. */ + GPU_flush(); + } +} + +/** + * Simple downsampling algorithm. Reconstruct mip chain up to mip level. + **/ +void EEVEE_downsample_buffer(EEVEE_Data *vedata, GPUTexture *texture_src, int level) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + e_data.color_src = texture_src; + + /* Create lower levels */ + DRW_stats_group_start("Downsample buffer"); + GPU_framebuffer_texture_attach(fbl->downsample_fb, texture_src, 0, 0); + GPU_framebuffer_recursive_downsample(fbl->downsample_fb, level, &simple_downsample_cb, vedata); + GPU_framebuffer_texture_detach(fbl->downsample_fb, texture_src); + DRW_stats_group_end(); +} + +/** + * Simple downsampling algorithm for cubemap. Reconstruct mip chain up to mip level. + **/ +void EEVEE_downsample_cube_buffer(EEVEE_Data *vedata, GPUTexture *texture_src, int level) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + e_data.color_src = texture_src; + + /* Create lower levels */ + DRW_stats_group_start("Downsample Cube buffer"); + GPU_framebuffer_texture_attach(fbl->downsample_fb, texture_src, 0, 0); + GPU_framebuffer_recursive_downsample(fbl->downsample_fb, level, &simple_downsample_cube_cb, vedata); + GPU_framebuffer_texture_detach(fbl->downsample_fb, texture_src); + DRW_stats_group_end(); +} + +void EEVEE_draw_effects(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + /* First resolve the velocity. */ + if ((effects->enabled_effects & EFFECT_VELOCITY_BUFFER) != 0) { + DRW_viewport_matrix_get(effects->velocity_curr_persinv, DRW_MAT_PERSINV); + + GPU_framebuffer_bind(fbl->velocity_resolve_fb); + DRW_draw_pass(psl->velocity_resolve); + } + DRW_viewport_matrix_get(effects->velocity_past_persmat, DRW_MAT_PERS); + + /* only once per frame after the first post process */ + effects->swap_double_buffer = ((effects->enabled_effects & EFFECT_DOUBLE_BUFFER) != 0); + + /* Init pointers */ + effects->source_buffer = txl->color; /* latest updated texture */ + effects->target_buffer = fbl->effect_color_fb; /* next target to render to */ + + /* Post process stack (order matters) */ + EEVEE_motion_blur_draw(vedata); + EEVEE_depth_of_field_draw(vedata); + EEVEE_temporal_sampling_draw(vedata); + EEVEE_bloom_draw(vedata); + + /* Save the final texture and framebuffer for final transformation or read. */ + effects->final_tx = effects->source_buffer; + effects->final_fb = (effects->target_buffer != fbl->main_color_fb) ? fbl->main_fb : fbl->effect_fb; + if ((effects->enabled_effects & EFFECT_TAA) && + (effects->source_buffer == txl->taa_history)) + { + effects->final_fb = fbl->taa_history_fb; + } + + /* If no post processes is enabled, buffers are still not swapped, do it now. */ + SWAP_DOUBLE_BUFFERS(); + + if (!stl->g_data->valid_double_buffer && + ((effects->enabled_effects & EFFECT_DOUBLE_BUFFER) != 0) && + (DRW_state_is_image_render() == false)) + { + /* If history buffer is not valid request another frame. + * This fix black reflections on area resize. */ + DRW_viewport_request_redraw(); + } + + /* Record pers matrix for the next frame. */ + DRW_viewport_matrix_get(stl->effects->prev_persmat, DRW_MAT_PERS); + + /* Update double buffer status if render mode. */ + if (DRW_state_is_image_render()) { + stl->g_data->valid_double_buffer = (txl->color_double_buffer != NULL); + stl->g_data->valid_taa_history = (txl->taa_history != NULL); + } +} + +void EEVEE_effects_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.downsample_sh); + DRW_SHADER_FREE_SAFE(e_data.downsample_cube_sh); + + DRW_SHADER_FREE_SAFE(e_data.minz_downlevel_sh); + DRW_SHADER_FREE_SAFE(e_data.maxz_downlevel_sh); + DRW_SHADER_FREE_SAFE(e_data.minz_downdepth_sh); + DRW_SHADER_FREE_SAFE(e_data.maxz_downdepth_sh); + DRW_SHADER_FREE_SAFE(e_data.minz_downdepth_layer_sh); + DRW_SHADER_FREE_SAFE(e_data.maxz_downdepth_layer_sh); + DRW_SHADER_FREE_SAFE(e_data.maxz_copydepth_layer_sh); + DRW_SHADER_FREE_SAFE(e_data.minz_copydepth_sh); + DRW_SHADER_FREE_SAFE(e_data.maxz_copydepth_sh); +} diff --git a/source/blender/draw/engines/eevee/eevee_engine.c b/source/blender/draw/engines/eevee/eevee_engine.c new file mode 100644 index 00000000000..aa2cf3fede3 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_engine.c @@ -0,0 +1,482 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_engine.c + * \ingroup draw_engine + */ + +#include "DRW_render.h" + +#include "BLI_dynstr.h" +#include "BLI_rand.h" + +#include "BKE_object.h" +#include "BKE_global.h" /* for G.debug_value */ +#include "BKE_screen.h" + +#include "DNA_world_types.h" + +#include "ED_screen.h" + +#include "GPU_material.h" +#include "GPU_glew.h" + +#include "eevee_engine.h" +#include "eevee_private.h" + +#define EEVEE_ENGINE "BLENDER_EEVEE" + +extern GlobalsUboStorage ts; + +/* *********** FUNCTIONS *********** */ + +static void eevee_engine_init(void *ved) +{ + EEVEE_Data *vedata = (EEVEE_Data *)ved; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + RegionView3D *rv3d = draw_ctx->rv3d; + Object *camera = (rv3d->persp == RV3D_CAMOB) ? v3d->camera : NULL; + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_callocN(sizeof(*stl->g_data), __func__); + } + stl->g_data->use_color_view_settings = USE_SCENE_LIGHT(v3d) || !LOOK_DEV_STUDIO_LIGHT_ENABLED(v3d); + stl->g_data->background_alpha = DRW_state_draw_background() ? 1.0f : 0.0f; + stl->g_data->valid_double_buffer = (txl->color_double_buffer != NULL); + stl->g_data->valid_taa_history = (txl->taa_history != NULL); + + /* Main Buffer */ + DRW_texture_ensure_fullscreen_2D(&txl->color, GPU_RGBA16F, DRW_TEX_FILTER | DRW_TEX_MIPMAP); + + GPU_framebuffer_ensure_config(&fbl->main_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(txl->color), + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE + }); + + GPU_framebuffer_ensure_config(&fbl->main_color_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->color) + }); + + if (sldata->common_ubo == NULL) { + sldata->common_ubo = DRW_uniformbuffer_create(sizeof(sldata->common_data), &sldata->common_data); + } + if (sldata->clip_ubo == NULL) { + sldata->clip_ubo = DRW_uniformbuffer_create(sizeof(sldata->clip_data), &sldata->clip_data); + } + + /* EEVEE_effects_init needs to go first for TAA */ + EEVEE_effects_init(sldata, vedata, camera, false); + EEVEE_materials_init(sldata, stl, fbl); + EEVEE_lights_init(sldata); + EEVEE_lightprobes_init(sldata, vedata); + + if ((stl->effects->taa_current_sample > 1) && !DRW_state_is_image_render()) { + /* XXX otherwise it would break the other engines. */ + DRW_viewport_matrix_override_unset_all(); + } +} + +static void eevee_cache_init(void *vedata) +{ + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + + EEVEE_bloom_cache_init(sldata, vedata); + EEVEE_depth_of_field_cache_init(sldata, vedata); + EEVEE_effects_cache_init(sldata, vedata); + EEVEE_lightprobes_cache_init(sldata, vedata); + EEVEE_lights_cache_init(sldata, vedata); + EEVEE_materials_cache_init(sldata, vedata); + EEVEE_motion_blur_cache_init(sldata, vedata); + EEVEE_occlusion_cache_init(sldata, vedata); + EEVEE_screen_raytrace_cache_init(sldata, vedata); + EEVEE_subsurface_cache_init(sldata, vedata); + EEVEE_temporal_sampling_cache_init(sldata, vedata); + EEVEE_volumes_cache_init(sldata, vedata); +} + +void EEVEE_cache_populate(void *vedata, Object *ob) +{ + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + + const DRWContextState *draw_ctx = DRW_context_state_get(); + bool cast_shadow = false; + + if (ob->base_flag & BASE_VISIBLE) { + EEVEE_hair_cache_populate(vedata, sldata, ob, &cast_shadow); + } + + if (DRW_object_is_renderable(ob) && + DRW_object_is_visible_in_active_context(ob)) + { + if (ELEM(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { + EEVEE_materials_cache_populate(vedata, sldata, ob, &cast_shadow); + } + else if (!USE_SCENE_LIGHT(draw_ctx->v3d)) { + /* do not add any scene light sources to the cache */ + } + else if (ob->type == OB_LIGHTPROBE) { + if ((ob->base_flag & BASE_FROMDUPLI) != 0) { + /* TODO: Special case for dupli objects because we cannot save the object pointer. */ + } + else { + EEVEE_lightprobes_cache_add(sldata, vedata, ob); + } + } + else if (ob->type == OB_LAMP) { + EEVEE_lights_cache_add(sldata, ob); + } + } + + if (cast_shadow) { + EEVEE_lights_cache_shcaster_object_add(sldata, ob); + } +} + +static void eevee_cache_finish(void *vedata) +{ + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + + EEVEE_materials_cache_finish(vedata); + EEVEE_lights_cache_finish(sldata, vedata); + EEVEE_lightprobes_cache_finish(sldata, vedata); +} + +/* As renders in an HDR offscreen buffer, we need draw everything once + * during the background pass. This way the other drawing callback between + * the background and the scene pass are visible. + * Note: we could break it up in two passes using some depth test + * to reduce the fillrate */ +static void eevee_draw_background(void *vedata) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + EEVEE_TextureList *txl = ((EEVEE_Data *)vedata)->txl; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + EEVEE_FramebufferList *fbl = ((EEVEE_Data *)vedata)->fbl; + EEVEE_EffectsInfo *effects = stl->effects; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + + /* Default framebuffer and texture */ + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + + /* Sort transparents before the loop. */ + DRW_pass_sort_shgroup_z(psl->transparent_pass); + + /* Number of iteration: needed for all temporal effect (SSR, volumetrics) + * when using opengl render. */ + int loop_len = (DRW_state_is_image_render() && + (stl->effects->enabled_effects & (EFFECT_VOLUMETRIC | EFFECT_SSR)) != 0) ? 4 : 1; + + while (loop_len--) { + float clear_col[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + float clear_depth = 1.0f; + uint clear_stencil = 0x0; + uint primes[3] = {2, 3, 7}; + double offset[3] = {0.0, 0.0, 0.0}; + double r[3]; + + bool taa_use_reprojection = (stl->effects->enabled_effects & EFFECT_TAA_REPROJECT) != 0; + + if (DRW_state_is_image_render() || + taa_use_reprojection || + ((stl->effects->enabled_effects & EFFECT_TAA) != 0)) + { + int samp = taa_use_reprojection + ? stl->effects->taa_reproject_sample + 1 + : stl->effects->taa_current_sample; + BLI_halton_3D(primes, offset, samp, r); + EEVEE_update_noise(psl, fbl, r); + EEVEE_volumes_set_jitter(sldata, samp - 1); + EEVEE_materials_init(sldata, stl, fbl); + } + /* Copy previous persmat to UBO data */ + copy_m4_m4(sldata->common_data.prev_persmat, stl->effects->prev_persmat); + + if (((stl->effects->enabled_effects & EFFECT_TAA) != 0) && + (stl->effects->taa_current_sample > 1) && + !DRW_state_is_image_render() && + !taa_use_reprojection) + { + DRW_viewport_matrix_override_set(stl->effects->overide_persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(stl->effects->overide_persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(stl->effects->overide_winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(stl->effects->overide_wininv, DRW_MAT_WININV); + } + + /* Refresh Probes */ + DRW_stats_group_start("Probes Refresh"); + EEVEE_lightprobes_refresh(sldata, vedata); + /* Probes refresh can have reset the current sample. */ + if (stl->effects->taa_current_sample == 1) { + DRW_viewport_matrix_override_unset_all(); + } + EEVEE_lightprobes_refresh_planar(sldata, vedata); + DRW_stats_group_end(); + + /* Refresh shadows */ + DRW_stats_group_start("Shadows"); + EEVEE_draw_shadows(sldata, vedata); + DRW_stats_group_end(); + + /* Set ray type. */ + sldata->common_data.ray_type = EEVEE_RAY_CAMERA; + sldata->common_data.ray_depth = 0.0f; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + + GPU_framebuffer_bind(fbl->main_fb); + GPUFrameBufferBits clear_bits = GPU_DEPTH_BIT; + clear_bits |= (DRW_state_draw_background()) ? 0 : GPU_COLOR_BIT; + clear_bits |= ((stl->effects->enabled_effects & EFFECT_SSS) != 0) ? GPU_STENCIL_BIT : 0; + GPU_framebuffer_clear(fbl->main_fb, clear_bits, clear_col, clear_depth, clear_stencil); + + /* Depth prepass */ + DRW_stats_group_start("Prepass"); + DRW_draw_pass(psl->depth_pass); + DRW_draw_pass(psl->depth_pass_cull); + DRW_stats_group_end(); + + /* Create minmax texture */ + DRW_stats_group_start("Main MinMax buffer"); + EEVEE_create_minmax_buffer(vedata, dtxl->depth, -1); + DRW_stats_group_end(); + + EEVEE_occlusion_compute(sldata, vedata, dtxl->depth, -1); + EEVEE_volumes_compute(sldata, vedata); + + /* Shading pass */ + DRW_stats_group_start("Shading"); + if (DRW_state_draw_background()) { + DRW_draw_pass(psl->background_pass); + } + EEVEE_draw_default_passes(psl); + DRW_draw_pass(psl->material_pass); + EEVEE_subsurface_data_render(sldata, vedata); + DRW_stats_group_end(); + + /* Effects pre-transparency */ + EEVEE_subsurface_compute(sldata, vedata); + EEVEE_reflection_compute(sldata, vedata); + EEVEE_occlusion_draw_debug(sldata, vedata); + if (psl->probe_display) { + DRW_draw_pass(psl->probe_display); + } + EEVEE_refraction_compute(sldata, vedata); + + /* Opaque refraction */ + DRW_stats_group_start("Opaque Refraction"); + DRW_draw_pass(psl->refract_depth_pass); + DRW_draw_pass(psl->refract_depth_pass_cull); + DRW_draw_pass(psl->refract_pass); + DRW_stats_group_end(); + + /* Volumetrics Resolve Opaque */ + EEVEE_volumes_resolve(sldata, vedata); + + /* Transparent */ + DRW_draw_pass(psl->transparent_pass); + + /* Post Process */ + DRW_stats_group_start("Post FX"); + EEVEE_draw_effects(sldata, vedata); + DRW_stats_group_end(); + + if ((stl->effects->taa_current_sample > 1) && !DRW_state_is_image_render()) { + DRW_viewport_matrix_override_unset_all(); + } + } + + /* LookDev */ + EEVEE_lookdev_draw_background(vedata); + /* END */ + + + /* Tonemapping and transfer result to default framebuffer. */ + bool use_view_settings = stl->g_data->use_color_view_settings; + + GPU_framebuffer_bind(dfbl->default_fb); + DRW_transform_to_display(stl->effects->final_tx, use_view_settings); + + /* Debug : Output buffer to view. */ + switch (G.debug_value) { + case 1: + if (txl->maxzbuffer) DRW_transform_to_display(txl->maxzbuffer, use_view_settings); + break; + case 2: + if (effects->ssr_pdf_output) DRW_transform_to_display(effects->ssr_pdf_output, use_view_settings); + break; + case 3: + if (effects->ssr_normal_input) DRW_transform_to_display(effects->ssr_normal_input, use_view_settings); + break; + case 4: + if (effects->ssr_specrough_input) DRW_transform_to_display(effects->ssr_specrough_input, use_view_settings); + break; + case 5: + if (txl->color_double_buffer) DRW_transform_to_display(txl->color_double_buffer, use_view_settings); + break; + case 6: + if (effects->gtao_horizons_debug) DRW_transform_to_display(effects->gtao_horizons_debug, use_view_settings); + break; + case 7: + if (effects->gtao_horizons) DRW_transform_to_display(effects->gtao_horizons, use_view_settings); + break; + case 8: + if (effects->sss_data) DRW_transform_to_display(effects->sss_data, use_view_settings); + break; + case 9: + if (effects->velocity_tx) DRW_transform_to_display(effects->velocity_tx, use_view_settings); + break; + default: + break; + } + + EEVEE_volumes_free_smoke_textures(); + + stl->g_data->view_updated = false; +} + +static void eevee_view_update(void *vedata) +{ + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + if (stl->g_data) { + stl->g_data->view_updated = true; + } +} + +static void eevee_id_object_update(void *UNUSED(vedata), Object *object) +{ + EEVEE_LightProbeEngineData *ped = EEVEE_lightprobe_data_get(object); + if (ped != NULL && ped->dd.recalc != 0) { + ped->need_update = (ped->dd.recalc & (ID_RECALC_TRANSFORM | ID_RECALC_COPY_ON_WRITE)) != 0; + ped->dd.recalc = 0; + } + EEVEE_LampEngineData *led = EEVEE_lamp_data_get(object); + if (led != NULL && led->dd.recalc != 0) { + led->need_update = true; + led->dd.recalc = 0; + } + EEVEE_ObjectEngineData *oedata = EEVEE_object_data_get(object); + if (oedata != NULL && oedata->dd.recalc != 0) { + oedata->need_update = true; + oedata->dd.recalc = 0; + } +} + +static void eevee_id_world_update(void *vedata, World *wo) +{ + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + LightCache *lcache = stl->g_data->light_cache; + + EEVEE_WorldEngineData *wedata = EEVEE_world_data_ensure(wo); + + if (wedata != NULL && wedata->dd.recalc != 0) { + if ((lcache->flag & (LIGHTCACHE_BAKED | LIGHTCACHE_BAKING)) == 0) { + lcache->flag |= LIGHTCACHE_UPDATE_WORLD; + } + wedata->dd.recalc = 0; + } +} + +static void eevee_id_update(void *vedata, ID *id) +{ + /* Handle updates based on ID type. */ + switch (GS(id->name)) { + case ID_WO: + eevee_id_world_update(vedata, (World *)id); + break; + case ID_OB: + eevee_id_object_update(vedata, (Object *)id); + break; + default: + /* pass */ + break; + } +} + +static void eevee_render_to_image(void *vedata, RenderEngine *engine, struct RenderLayer *render_layer, const rcti *rect) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + EEVEE_render_init(vedata, engine, draw_ctx->depsgraph); + + DRW_render_object_iter(vedata, engine, draw_ctx->depsgraph, EEVEE_render_cache); + + /* Actually do the rendering. */ + EEVEE_render_draw(vedata, engine, render_layer, rect); +} + +static void eevee_engine_free(void) +{ + EEVEE_shaders_free(); + EEVEE_bloom_free(); + EEVEE_depth_of_field_free(); + EEVEE_effects_free(); + EEVEE_lightprobes_free(); + EEVEE_lights_free(); + EEVEE_materials_free(); + EEVEE_mist_free(); + EEVEE_motion_blur_free(); + EEVEE_occlusion_free(); + EEVEE_screen_raytrace_free(); + EEVEE_subsurface_free(); + EEVEE_volumes_free(); +} + +static const DrawEngineDataSize eevee_data_size = DRW_VIEWPORT_DATA_SIZE(EEVEE_Data); + +DrawEngineType draw_engine_eevee_type = { + NULL, NULL, + N_("Eevee"), + &eevee_data_size, + &eevee_engine_init, + &eevee_engine_free, + &eevee_cache_init, + &EEVEE_cache_populate, + &eevee_cache_finish, + &eevee_draw_background, + NULL, /* Everything is drawn in the background pass (see comment on function) */ + &eevee_view_update, + &eevee_id_update, + &eevee_render_to_image, +}; + +RenderEngineType DRW_engine_viewport_eevee_type = { + NULL, NULL, + EEVEE_ENGINE, N_("Eevee"), RE_INTERNAL | RE_USE_SHADING_NODES | RE_USE_PREVIEW, + NULL, &DRW_render_to_image, NULL, NULL, NULL, NULL, + &EEVEE_render_update_passes, + &draw_engine_eevee_type, + {NULL, NULL, NULL} +}; + + +#undef EEVEE_ENGINE diff --git a/source/blender/draw/engines/eevee/eevee_engine.h b/source/blender/draw/engines/eevee/eevee_engine.h new file mode 100644 index 00000000000..b7de3a055b9 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_engine.h @@ -0,0 +1,31 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_engine.h + * \ingroup DNA + */ + +#ifndef __EEVEE_ENGINE_H__ +#define __EEVEE_ENGINE_H__ + +extern RenderEngineType DRW_engine_viewport_eevee_type; + +#endif /* __EEVEE_ENGINE_H__ */ diff --git a/source/blender/draw/engines/eevee/eevee_lightcache.c b/source/blender/draw/engines/eevee/eevee_lightcache.c new file mode 100644 index 00000000000..451e7174a94 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_lightcache.c @@ -0,0 +1,1215 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_lightcache.c + * \ingroup draw_engine + * + * Eevee's indirect lighting cache. + */ + +#include "DRW_render.h" + +#include "BKE_global.h" +#include "BKE_blender.h" + +#include "BLI_threads.h" + +#include "DEG_depsgraph_build.h" +#include "DEG_depsgraph_query.h" + +#include "BKE_object.h" + +#include "DNA_collection_types.h" +#include "DNA_lightprobe_types.h" + +#include "PIL_time.h" + +#include "eevee_lightcache.h" +#include "eevee_private.h" + +#include "GPU_context.h" + +#include "WM_api.h" +#include "WM_types.h" + +#include "wm_window.h" + +/* Rounded to nearest PowerOfTwo */ +#if defined(IRRADIANCE_SH_L2) +#define IRRADIANCE_SAMPLE_SIZE_X 4 /* 3 in reality */ +#define IRRADIANCE_SAMPLE_SIZE_Y 4 /* 3 in reality */ +#elif defined(IRRADIANCE_CUBEMAP) +#define IRRADIANCE_SAMPLE_SIZE_X 8 +#define IRRADIANCE_SAMPLE_SIZE_Y 8 +#elif defined(IRRADIANCE_HL2) +#define IRRADIANCE_SAMPLE_SIZE_X 4 /* 3 in reality */ +#define IRRADIANCE_SAMPLE_SIZE_Y 2 +#endif + +#ifdef IRRADIANCE_SH_L2 +/* we need a signed format for Spherical Harmonics */ +# define IRRADIANCE_FORMAT GPU_RGBA16F +#else +# define IRRADIANCE_FORMAT GPU_RGBA8 +#endif + +#define IRRADIANCE_MAX_POOL_LAYER 256 /* OpenGL 3.3 core requirement, can be extended but it's already very big */ +#define IRRADIANCE_MAX_POOL_SIZE 1024 +#define MAX_IRRADIANCE_SAMPLES \ + (IRRADIANCE_MAX_POOL_SIZE / IRRADIANCE_SAMPLE_SIZE_X) * \ + (IRRADIANCE_MAX_POOL_SIZE / IRRADIANCE_SAMPLE_SIZE_Y) + +/* TODO should be replace by a more elegant alternative. */ +extern void DRW_opengl_context_enable(void); +extern void DRW_opengl_context_disable(void); + +extern void DRW_opengl_render_context_enable(void *re_gl_context); +extern void DRW_opengl_render_context_disable(void *re_gl_context); +extern void DRW_gawain_render_context_enable(void *re_gpu_context); +extern void DRW_gawain_render_context_disable(void *re_gpu_context); + +typedef struct EEVEE_LightBake { + Depsgraph *depsgraph; + ViewLayer *view_layer; + ViewLayer *view_layer_input; + LightCache *lcache; + Scene *scene; + struct Main *bmain; + EEVEE_ViewLayerData *sldata; + + LightProbe **probe; /* Current probe being rendered. */ + GPUTexture *rt_color; /* Target cube color texture. */ + GPUTexture *rt_depth; /* Target cube depth texture. */ + GPUFrameBuffer *rt_fb[6]; /* Target cube framebuffers. */ + GPUFrameBuffer *store_fb; /* Storage framebuffer. */ + int rt_res; /* Cube render target resolution. */ + + /* Shared */ + int layer; /* Target layer to store the data to. */ + float samples_ct, invsamples_ct; /* Sample count for the convolution. */ + float lod_factor; /* Sampling bias during convolution step. */ + float lod_max; /* Max cubemap LOD to sample when convolving. */ + int cube_len, grid_len; /* Number of probes to render + world probe. */ + + /* Irradiance grid */ + EEVEE_LightGrid *grid; /* Current probe being rendered (UBO data). */ + int irr_cube_res; /* Target cubemap at MIP 0. */ + int irr_size[3]; /* Size of the irradiance texture. */ + int total_irr_samples; /* Total for all grids */ + int grid_sample; /* Nth sample of the current grid being rendered. */ + int grid_sample_len; /* Total number of samples for the current grid. */ + int grid_curr; /* Nth grid in the cache being rendered. */ + int bounce_curr, bounce_len; /* The current light bounce being evaluated. */ + float vis_res; /* Resolution of the Visibility shadowmap. */ + GPUTexture *grid_prev; /* Result of previous light bounce. */ + LightProbe **grid_prb; /* Pointer to the id.data of the probe object. */ + + /* Reflection probe */ + EEVEE_LightProbe *cube; /* Current probe being rendered (UBO data). */ + int ref_cube_res; /* Target cubemap at MIP 0. */ + int cube_offset; /* Index of the current cube. */ + LightProbe **cube_prb; /* Pointer to the id.data of the probe object. */ + + /* Dummy Textures */ + struct GPUTexture *dummy_color, *dummy_depth; + struct GPUTexture *dummy_layer_color; + + int total, done; /* to compute progress */ + short *stop, *do_update; + float *progress; + + bool resource_only; /* For only handling the resources. */ + bool own_resources; + bool own_light_cache; /* If the lightcache was created for baking, it's first owned by the baker. */ + int delay; /* ms. delay the start of the baking to not slowdown interactions (TODO remove) */ + + void *gl_context, *gpu_context; /* If running in parallel (in a separate thread), use this context. */ + + ThreadMutex *mutex; +} EEVEE_LightBake; + +/* -------------------------------------------------------------------- */ + +/** \name Light Cache + * \{ */ + +/* Return memory footprint in bytes. */ +static unsigned int eevee_lightcache_memsize_get(LightCache *lcache) +{ + unsigned int size = 0; + if (lcache->grid_tx.data) { + size += MEM_allocN_len(lcache->grid_tx.data); + } + if (lcache->cube_tx.data) { + size += MEM_allocN_len(lcache->cube_tx.data); + for (int mip = 0; mip < lcache->mips_len; ++mip) { + size += MEM_allocN_len(lcache->cube_mips[mip].data); + } + } + return size; +} + +static int eevee_lightcache_irradiance_sample_count(LightCache *lcache) +{ + int total_irr_samples = 0; + + for (int i = 1; i < lcache->grid_len; ++i) { + EEVEE_LightGrid *egrid = lcache->grid_data + i; + total_irr_samples += egrid->resolution[0] * egrid->resolution[1] * egrid->resolution[2]; + } + return total_irr_samples; +} + +void EEVEE_lightcache_info_update(SceneEEVEE *eevee) +{ + LightCache *lcache = eevee->light_cache; + + if (lcache != NULL) { + if (lcache->flag & LIGHTCACHE_BAKING) { + BLI_strncpy(eevee->light_cache_info, IFACE_("Baking light cache."), sizeof(eevee->light_cache_info)); + return; + } + + char formatted_mem[15]; + BLI_str_format_byte_unit(formatted_mem, eevee_lightcache_memsize_get(lcache), true); + + int irr_samples = eevee_lightcache_irradiance_sample_count(lcache); + + BLI_snprintf(eevee->light_cache_info, sizeof(eevee->light_cache_info), IFACE_("%d Ref. Cubemaps, %d Irr. Samples (%s in memory)"), lcache->cube_len - 1, irr_samples, formatted_mem); + } + else { + BLI_strncpy(eevee->light_cache_info, IFACE_("No light cache in this scene."), sizeof(eevee->light_cache_info)); + } +} + +static void irradiance_pool_size_get(int visibility_size, int total_samples, int r_size[3]) +{ + /* Compute how many irradiance samples we can store per visibility sample. */ + int irr_per_vis = (visibility_size / IRRADIANCE_SAMPLE_SIZE_X) * + (visibility_size / IRRADIANCE_SAMPLE_SIZE_Y); + + /* The irradiance itself take one layer, hence the +1 */ + int layer_ct = MIN2(irr_per_vis + 1, IRRADIANCE_MAX_POOL_LAYER); + + int texel_ct = (int)ceilf((float)total_samples / (float)(layer_ct - 1)); + r_size[0] = visibility_size * max_ii(1, min_ii(texel_ct, (IRRADIANCE_MAX_POOL_SIZE / visibility_size))); + r_size[1] = visibility_size * max_ii(1, (texel_ct / (IRRADIANCE_MAX_POOL_SIZE / visibility_size))); + r_size[2] = layer_ct; +} + +static bool EEVEE_lightcache_validate( + const LightCache *light_cache, + const int cube_len, + const int cube_res, + const int grid_len, + const int irr_size[3]) +{ + if (light_cache) { + /* See if we need the same amount of texture space. */ + if ((irr_size[0] == light_cache->grid_tx.tex_size[0]) && + (irr_size[1] == light_cache->grid_tx.tex_size[1]) && + (irr_size[2] == light_cache->grid_tx.tex_size[2]) && + (grid_len == light_cache->grid_len)) + { + int mip_len = (int)(floorf(log2f(cube_res)) - MIN_CUBE_LOD_LEVEL); + if ((cube_res == light_cache->cube_tx.tex_size[0]) && + (cube_len == light_cache->cube_tx.tex_size[2]) && + (mip_len == light_cache->mips_len)) + { + return true; + } + } + } + return false; +} + +LightCache *EEVEE_lightcache_create( + const int grid_len, + const int cube_len, + const int cube_size, + const int vis_size, + const int irr_size[3]) +{ + LightCache *light_cache = MEM_callocN(sizeof(LightCache), "LightCache"); + + light_cache->cube_data = MEM_callocN(sizeof(EEVEE_LightProbe) * cube_len, "EEVEE_LightProbe"); + light_cache->grid_data = MEM_callocN(sizeof(EEVEE_LightGrid) * grid_len, "EEVEE_LightGrid"); + + light_cache->grid_tx.tex = DRW_texture_create_2D_array(irr_size[0], irr_size[1], irr_size[2], IRRADIANCE_FORMAT, DRW_TEX_FILTER, NULL); + light_cache->grid_tx.tex_size[0] = irr_size[0]; + light_cache->grid_tx.tex_size[1] = irr_size[1]; + light_cache->grid_tx.tex_size[2] = irr_size[2]; + + light_cache->cube_tx.tex = DRW_texture_create_2D_array(cube_size, cube_size, cube_len, GPU_R11F_G11F_B10F, DRW_TEX_FILTER | DRW_TEX_MIPMAP, NULL); + light_cache->cube_tx.tex_size[0] = cube_size; + light_cache->cube_tx.tex_size[1] = cube_size; + light_cache->cube_tx.tex_size[2] = cube_len; + + light_cache->mips_len = (int)(floorf(log2f(cube_size)) - MIN_CUBE_LOD_LEVEL); + light_cache->vis_res = vis_size; + light_cache->ref_res = cube_size; + + light_cache->cube_mips = MEM_callocN(sizeof(LightCacheTexture) * light_cache->mips_len, "LightCacheTexture"); + + for (int mip = 0; mip < light_cache->mips_len; ++mip) { + GPU_texture_get_mipmap_size(light_cache->cube_tx.tex, mip + 1, light_cache->cube_mips[mip].tex_size); + } + + light_cache->flag = LIGHTCACHE_UPDATE_WORLD | LIGHTCACHE_UPDATE_CUBE | LIGHTCACHE_UPDATE_GRID; + + return light_cache; +} + +void EEVEE_lightcache_load(LightCache *lcache) +{ + if (lcache->grid_tx.tex == NULL && lcache->grid_tx.data) { + lcache->grid_tx.tex = GPU_texture_create_nD(lcache->grid_tx.tex_size[0], + lcache->grid_tx.tex_size[1], + lcache->grid_tx.tex_size[2], + 2, + lcache->grid_tx.data, + IRRADIANCE_FORMAT, + GPU_DATA_UNSIGNED_BYTE, + 0, + false, + NULL); + GPU_texture_bind(lcache->grid_tx.tex, 0); + GPU_texture_filter_mode(lcache->grid_tx.tex, true); + GPU_texture_unbind(lcache->grid_tx.tex); + } + + if (lcache->cube_tx.tex == NULL && lcache->cube_tx.data) { + lcache->cube_tx.tex = GPU_texture_create_nD(lcache->cube_tx.tex_size[0], + lcache->cube_tx.tex_size[1], + lcache->cube_tx.tex_size[2], + 2, + lcache->cube_tx.data, + GPU_R11F_G11F_B10F, + GPU_DATA_10_11_11_REV, + 0, + false, + NULL); + GPU_texture_bind(lcache->cube_tx.tex, 0); + GPU_texture_mipmap_mode(lcache->cube_tx.tex, true, true); + for (int mip = 0; mip < lcache->mips_len; ++mip) { + GPU_texture_add_mipmap(lcache->cube_tx.tex, GPU_DATA_10_11_11_REV, mip + 1, lcache->cube_mips[mip].data); + } + GPU_texture_unbind(lcache->cube_tx.tex); + } +} + +static void eevee_lightbake_readback_irradiance(LightCache *lcache) +{ + MEM_SAFE_FREE(lcache->grid_tx.data); + lcache->grid_tx.data = GPU_texture_read(lcache->grid_tx.tex, GPU_DATA_UNSIGNED_BYTE, 0); + lcache->grid_tx.data_type = LIGHTCACHETEX_BYTE; + lcache->grid_tx.components = 4; +} + +static void eevee_lightbake_readback_reflections(LightCache *lcache) +{ + MEM_SAFE_FREE(lcache->cube_tx.data); + lcache->cube_tx.data = GPU_texture_read(lcache->cube_tx.tex, GPU_DATA_10_11_11_REV, 0); + lcache->cube_tx.data_type = LIGHTCACHETEX_UINT; + lcache->cube_tx.components = 1; + + for (int mip = 0; mip < lcache->mips_len; ++mip) { + LightCacheTexture *cube_mip = lcache->cube_mips + mip; + MEM_SAFE_FREE(cube_mip->data); + GPU_texture_get_mipmap_size(lcache->cube_tx.tex, mip + 1, cube_mip->tex_size); + + cube_mip->data = GPU_texture_read(lcache->cube_tx.tex, GPU_DATA_10_11_11_REV, mip + 1); + cube_mip->data_type = LIGHTCACHETEX_UINT; + cube_mip->components = 1; + } +} + +void EEVEE_lightcache_free(LightCache *lcache) +{ + DRW_TEXTURE_FREE_SAFE(lcache->cube_tx.tex); + MEM_SAFE_FREE(lcache->cube_tx.data); + DRW_TEXTURE_FREE_SAFE(lcache->grid_tx.tex); + MEM_SAFE_FREE(lcache->grid_tx.data); + + if (lcache->cube_mips) { + for (int i = 0; i < lcache->mips_len; ++i) { + MEM_SAFE_FREE(lcache->cube_mips[i].data); + } + MEM_SAFE_FREE(lcache->cube_mips); + } + + MEM_SAFE_FREE(lcache->cube_data); + MEM_SAFE_FREE(lcache->grid_data); + MEM_freeN(lcache); +} + +/** \} */ + + +/* -------------------------------------------------------------------- */ + +/** \name Light Bake Context + * \{ */ + +static void eevee_lightbake_context_enable(EEVEE_LightBake *lbake) +{ + if (lbake->gl_context) { + DRW_opengl_render_context_enable(lbake->gl_context); + if (lbake->gpu_context == NULL) { + lbake->gpu_context = GPU_context_create(); + } + DRW_gawain_render_context_enable(lbake->gpu_context); + } + else { + DRW_opengl_context_enable(); + } +} + +static void eevee_lightbake_context_disable(EEVEE_LightBake *lbake) +{ + if (lbake->gl_context) { + DRW_gawain_render_context_disable(lbake->gpu_context); + DRW_opengl_render_context_disable(lbake->gl_context); + } + else { + DRW_opengl_context_disable(); + } +} + +/** \} */ + + +/* -------------------------------------------------------------------- */ + +/** \name Light Bake Job + * \{ */ + +static void eevee_lightbake_count_probes(EEVEE_LightBake *lbake) +{ + Depsgraph *depsgraph = lbake->depsgraph; + + /* At least one of each for the world */ + lbake->grid_len = lbake->cube_len = lbake->total_irr_samples = 1; + + DEG_OBJECT_ITER_FOR_RENDER_ENGINE_BEGIN(depsgraph, ob) + { + if (!BKE_object_is_visible(ob, OB_VISIBILITY_CHECK_FOR_RENDER)) { + continue; + } + + if (ob->type == OB_LIGHTPROBE) { + LightProbe *prb = (LightProbe *)ob->data; + + if (prb->type == LIGHTPROBE_TYPE_GRID) { + lbake->total_irr_samples += prb->grid_resolution_x * prb->grid_resolution_y * prb->grid_resolution_z; + lbake->grid_len++; + } + else if (prb->type == LIGHTPROBE_TYPE_CUBE) { + lbake->cube_len++; + } + } + } + DEG_OBJECT_ITER_FOR_RENDER_ENGINE_END; +} + +static void eevee_lightbake_create_render_target(EEVEE_LightBake *lbake, int rt_res) +{ + lbake->rt_depth = DRW_texture_create_cube(rt_res, GPU_DEPTH_COMPONENT24, 0, NULL); + lbake->rt_color = DRW_texture_create_cube(rt_res, GPU_RGBA16F, DRW_TEX_FILTER | DRW_TEX_MIPMAP, NULL); + + for (int i = 0; i < 6; ++i) { + GPU_framebuffer_ensure_config(&lbake->rt_fb[i], { + GPU_ATTACHMENT_TEXTURE_CUBEFACE(lbake->rt_depth, i), + GPU_ATTACHMENT_TEXTURE_CUBEFACE(lbake->rt_color, i) + }); + } + + GPU_framebuffer_ensure_config(&lbake->store_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE + }); +} + +static void eevee_lightbake_create_resources(EEVEE_LightBake *lbake) +{ + Scene *scene_eval = DEG_get_evaluated_scene(lbake->depsgraph); + SceneEEVEE *eevee = &scene_eval->eevee; + + lbake->bounce_len = eevee->gi_diffuse_bounces; + lbake->vis_res = eevee->gi_visibility_resolution; + lbake->rt_res = eevee->gi_cubemap_resolution; + + irradiance_pool_size_get(lbake->vis_res, lbake->total_irr_samples, lbake->irr_size); + + lbake->ref_cube_res = OCTAHEDRAL_SIZE_FROM_CUBESIZE(lbake->rt_res); + + lbake->cube_prb = MEM_callocN(sizeof(LightProbe *) * lbake->cube_len, "EEVEE Cube visgroup ptr"); + lbake->grid_prb = MEM_callocN(sizeof(LightProbe *) * lbake->grid_len, "EEVEE Grid visgroup ptr"); + + lbake->grid_prev = DRW_texture_create_2D_array(lbake->irr_size[0], lbake->irr_size[1], lbake->irr_size[2], + IRRADIANCE_FORMAT, DRW_TEX_FILTER, NULL); + + /* Ensure Light Cache is ready to accept new data. If not recreate one. + * WARNING: All the following must be threadsafe. It's currently protected + * by the DRW mutex. */ + lbake->lcache = eevee->light_cache; + + /* TODO validate irradiance and reflection cache independently... */ + if (!EEVEE_lightcache_validate( + lbake->lcache, lbake->cube_len, lbake->ref_cube_res, lbake->grid_len, lbake->irr_size)) + { + eevee->light_cache = lbake->lcache = NULL; + } + + if (lbake->lcache == NULL) { + lbake->lcache = EEVEE_lightcache_create( + lbake->grid_len, + lbake->cube_len, + lbake->ref_cube_res, + lbake->vis_res, + lbake->irr_size); + lbake->lcache->flag = LIGHTCACHE_UPDATE_WORLD | LIGHTCACHE_UPDATE_CUBE | LIGHTCACHE_UPDATE_GRID; + lbake->lcache->vis_res = lbake->vis_res; + lbake->own_light_cache = true; + + eevee->light_cache = lbake->lcache; + } + + EEVEE_lightcache_load(eevee->light_cache); + + lbake->lcache->flag |= LIGHTCACHE_BAKING; + lbake->lcache->cube_len = 1; +} + +wmJob *EEVEE_lightbake_job_create( + struct wmWindowManager *wm, struct wmWindow *win, struct Main *bmain, + struct ViewLayer *view_layer, struct Scene *scene, int delay) +{ + EEVEE_LightBake *lbake = NULL; + + /* only one render job at a time */ + if (WM_jobs_test(wm, scene, WM_JOB_TYPE_RENDER)) + return NULL; + + wmJob *wm_job = WM_jobs_get(wm, win, scene, "Bake Lighting", + WM_JOB_EXCL_RENDER | WM_JOB_PRIORITY | WM_JOB_PROGRESS, WM_JOB_TYPE_LIGHT_BAKE); + + /* If job exists do not recreate context and depsgraph. */ + EEVEE_LightBake *old_lbake = (EEVEE_LightBake *)WM_jobs_customdata_get(wm_job); + + if (old_lbake && (old_lbake->view_layer_input == view_layer) && (old_lbake->bmain == bmain)) { + lbake = MEM_callocN(sizeof(EEVEE_LightBake), "EEVEE_LightBake"); + /* Cannot reuse depsgraph for now because we cannot get the update from the + * main database directly. TODO reuse depsgraph and only update positions. */ + /* lbake->depsgraph = old_lbake->depsgraph; */ + lbake->depsgraph = DEG_graph_new(scene, view_layer, DAG_EVAL_RENDER); + + lbake->mutex = BLI_mutex_alloc(); + + BLI_mutex_lock(old_lbake->mutex); + old_lbake->own_resources = false; + + lbake->scene = scene; + lbake->bmain = bmain; + lbake->view_layer_input = view_layer; + lbake->gl_context = old_lbake->gl_context; + lbake->own_resources = true; + lbake->delay = delay; + + if (lbake->gl_context == NULL) { + lbake->gl_context = WM_opengl_context_create(); + wm_window_reset_drawable(); + } + + if (old_lbake->stop != NULL) { + *old_lbake->stop = 1; + } + BLI_mutex_unlock(old_lbake->mutex); + } + else { + lbake = EEVEE_lightbake_job_data_alloc(bmain, view_layer, scene, true); + lbake->delay = delay; + } + + WM_jobs_customdata_set(wm_job, lbake, EEVEE_lightbake_job_data_free); + WM_jobs_timer(wm_job, 0.4, NC_SCENE | NA_EDITED, 0); + WM_jobs_callbacks(wm_job, EEVEE_lightbake_job, NULL, EEVEE_lightbake_update, EEVEE_lightbake_update); + + G.is_break = false; + + return wm_job; +} + +/* MUST run on the main thread. */ +void *EEVEE_lightbake_job_data_alloc( + struct Main *bmain, struct ViewLayer *view_layer, struct Scene *scene, bool run_as_job) +{ + BLI_assert(BLI_thread_is_main()); + + EEVEE_LightBake *lbake = MEM_callocN(sizeof(EEVEE_LightBake), "EEVEE_LightBake"); + + lbake->depsgraph = DEG_graph_new(scene, view_layer, DAG_EVAL_RENDER); + lbake->scene = scene; + lbake->bmain = bmain; + lbake->view_layer_input = view_layer; + lbake->own_resources = true; + lbake->own_light_cache = false; + lbake->mutex = BLI_mutex_alloc(); + + if (run_as_job) { + lbake->gl_context = WM_opengl_context_create(); + wm_window_reset_drawable(); + } + + return lbake; +} + +void EEVEE_lightbake_job_data_free(void *custom_data) +{ + EEVEE_LightBake *lbake = (EEVEE_LightBake *)custom_data; + + + + /* TODO reuse depsgraph. */ + /* if (lbake->own_resources) { */ + DEG_graph_free(lbake->depsgraph); + /* } */ + + MEM_SAFE_FREE(lbake->cube_prb); + MEM_SAFE_FREE(lbake->grid_prb); + + BLI_mutex_free(lbake->mutex); + + MEM_freeN(lbake); +} + +static void eevee_lightbake_delete_resources(EEVEE_LightBake *lbake) +{ + if (!lbake->resource_only) { + BLI_mutex_lock(lbake->mutex); + } + + if (lbake->gl_context) { + DRW_opengl_render_context_enable(lbake->gl_context); + DRW_gawain_render_context_enable(lbake->gpu_context); + } + else if (!lbake->resource_only) { + DRW_opengl_context_enable(); + } + + /* XXX Free the resources contained in the viewlayer data + * to be able to free the context before deleting the depsgraph. */ + if (lbake->sldata) { + EEVEE_view_layer_data_free(lbake->sldata); + } + + DRW_TEXTURE_FREE_SAFE(lbake->rt_depth); + DRW_TEXTURE_FREE_SAFE(lbake->rt_color); + DRW_TEXTURE_FREE_SAFE(lbake->grid_prev); + GPU_FRAMEBUFFER_FREE_SAFE(lbake->store_fb); + for (int i = 0; i < 6; ++i) { + GPU_FRAMEBUFFER_FREE_SAFE(lbake->rt_fb[i]); + } + + if (lbake->gpu_context) { + DRW_gawain_render_context_disable(lbake->gpu_context); + DRW_gawain_render_context_enable(lbake->gpu_context); + GPU_context_discard(lbake->gpu_context); + } + + if (lbake->gl_context && lbake->own_resources) { + /* Delete the baking context. */ + DRW_opengl_render_context_disable(lbake->gl_context); + WM_opengl_context_dispose(lbake->gl_context); + lbake->gpu_context = NULL; + lbake->gl_context = NULL; + } + else if (lbake->gl_context) { + DRW_opengl_render_context_disable(lbake->gl_context); + } + else if (!lbake->resource_only) { + DRW_opengl_context_disable(); + } + + if (!lbake->resource_only) { + BLI_mutex_unlock(lbake->mutex); + } +} + +/* Cache as in draw cache not light cache. */ +static void eevee_lightbake_cache_create(EEVEE_Data *vedata, EEVEE_LightBake *lbake) +{ + EEVEE_TextureList *txl = vedata->txl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + Scene *scene_eval = DEG_get_evaluated_scene(lbake->depsgraph); + lbake->sldata = sldata; + + /* Disable all effects BUT high bitdepth shadows. */ + scene_eval->eevee.flag &= SCE_EEVEE_SHADOW_HIGH_BITDEPTH; + scene_eval->eevee.taa_samples = 1; + scene_eval->eevee.gi_irradiance_smoothing = 0.0f; + + stl->g_data = MEM_callocN(sizeof(*stl->g_data), __func__); + stl->g_data->background_alpha = 1.0f; + + /* XXX TODO remove this. This is in order to make the init functions work. */ + DRWMatrixState dummy_mats = {{{{{0}}}}}; + DRW_viewport_matrix_override_set_all(&dummy_mats); + + if (sldata->common_ubo == NULL) { + sldata->common_ubo = DRW_uniformbuffer_create(sizeof(sldata->common_data), &sldata->common_data); + } + if (sldata->clip_ubo == NULL) { + sldata->clip_ubo = DRW_uniformbuffer_create(sizeof(sldata->clip_data), &sldata->clip_data); + } + + /* HACK: set txl->color but unset it before Draw Manager frees it. */ + txl->color = lbake->rt_color; + int viewport_size[2] = { + GPU_texture_width(txl->color), + GPU_texture_height(txl->color) + }; + DRW_render_viewport_size_set(viewport_size); + + EEVEE_effects_init(sldata, vedata, NULL, true); + EEVEE_materials_init(sldata, stl, fbl); + EEVEE_lights_init(sldata); + EEVEE_lightprobes_init(sldata, vedata); + + EEVEE_effects_cache_init(sldata, vedata); + EEVEE_materials_cache_init(sldata, vedata); + EEVEE_lights_cache_init(sldata, vedata); + EEVEE_lightprobes_cache_init(sldata, vedata); + + EEVEE_lightbake_cache_init(sldata, vedata, lbake->rt_color, lbake->rt_depth); + + if (lbake->probe) { + EEVEE_LightProbesInfo *pinfo = sldata->probes; + LightProbe *prb = *lbake->probe; + pinfo->vis_data.collection = prb->visibility_grp; + pinfo->vis_data.invert = prb->flag & LIGHTPROBE_FLAG_INVERT_GROUP; + pinfo->vis_data.cached = false; + } + DRW_render_object_iter(vedata, NULL, lbake->depsgraph, EEVEE_render_cache); + + EEVEE_materials_cache_finish(vedata); + EEVEE_lights_cache_finish(sldata, vedata); + EEVEE_lightprobes_cache_finish(sldata, vedata); + + txl->color = NULL; + + DRW_render_instance_buffer_finish(); + DRW_hair_update(); +} + +static void eevee_lightbake_copy_irradiance(EEVEE_LightBake *lbake, LightCache *lcache) +{ + DRW_TEXTURE_FREE_SAFE(lbake->grid_prev); + + /* Copy texture by reading back and reuploading it. */ + float *tex = GPU_texture_read(lcache->grid_tx.tex, GPU_DATA_FLOAT, 0); + lbake->grid_prev = DRW_texture_create_2D_array(lbake->irr_size[0], lbake->irr_size[1], lbake->irr_size[2], + IRRADIANCE_FORMAT, DRW_TEX_FILTER, tex); + + MEM_freeN(tex); +} + +static void eevee_lightbake_render_world_sample(void *ved, void *user_data) +{ + EEVEE_Data *vedata = (EEVEE_Data *)ved; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + EEVEE_LightBake *lbake = (EEVEE_LightBake *)user_data; + Scene *scene_eval = DEG_get_evaluated_scene(lbake->depsgraph); + LightCache *lcache = scene_eval->eevee.light_cache; + float clamp = scene_eval->eevee.gi_glossy_clamp; + float filter_quality = scene_eval->eevee.gi_filter_quality; + + /* TODO do this once for the whole bake when we have independent DRWManagers. */ + eevee_lightbake_cache_create(vedata, lbake); + + sldata->common_data.ray_type = EEVEE_RAY_GLOSSY; + sldata->common_data.ray_depth = 1; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + EEVEE_lightbake_render_world(sldata, vedata, lbake->rt_fb); + EEVEE_lightbake_filter_glossy(sldata, vedata, lbake->rt_color, lbake->store_fb, 0, 1.0f, lcache->mips_len, filter_quality, clamp); + + sldata->common_data.ray_type = EEVEE_RAY_DIFFUSE; + sldata->common_data.ray_depth = 1; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + EEVEE_lightbake_render_world(sldata, vedata, lbake->rt_fb); + EEVEE_lightbake_filter_diffuse(sldata, vedata, lbake->rt_color, lbake->store_fb, 0, 1.0f); + + /* Clear the cache to avoid white values in the grid. */ + GPU_framebuffer_texture_attach(lbake->store_fb, lbake->grid_prev, 0, 0); + GPU_framebuffer_bind(lbake->store_fb); + /* Clear to 1.0f for visibility. */ + GPU_framebuffer_clear_color(lbake->store_fb, ((float[4]){1.0f, 1.0f, 1.0f, 1.0f})); + DRW_draw_pass(vedata->psl->probe_grid_fill); + + SWAP(GPUTexture *, lbake->grid_prev, lcache->grid_tx.tex); + + /* Make a copy for later. */ + eevee_lightbake_copy_irradiance(lbake, lcache); + + lcache->cube_len = 1; + lcache->grid_len = lbake->grid_len; + + lcache->flag |= LIGHTCACHE_CUBE_READY | LIGHTCACHE_GRID_READY; + lcache->flag &= ~LIGHTCACHE_UPDATE_WORLD; +} + +static void cell_id_to_grid_loc(EEVEE_LightGrid *egrid, int cell_idx, int r_local_cell[3]) +{ + /* Keep in sync with lightprobe_grid_display_vert */ + r_local_cell[2] = cell_idx % egrid->resolution[2]; + r_local_cell[1] = (cell_idx / egrid->resolution[2]) % egrid->resolution[1]; + r_local_cell[0] = cell_idx / (egrid->resolution[2] * egrid->resolution[1]); +} + +static void compute_cell_id( + EEVEE_LightGrid *egrid, LightProbe *probe, + int cell_idx, int *r_final_idx, int r_local_cell[3], int *r_stride) +{ + const int cell_count = probe->grid_resolution_x * probe->grid_resolution_y * probe->grid_resolution_z; + + /* Add one for level 0 */ + int max_lvl = (int)floorf(log2f((float)MAX3(probe->grid_resolution_x, + probe->grid_resolution_y, + probe->grid_resolution_z))); + + int visited_cells = 0; + *r_stride = 0; + *r_final_idx = 0; + r_local_cell[0] = r_local_cell[1] = r_local_cell[2] = 0; + for (int lvl = max_lvl; lvl >= 0; --lvl) { + *r_stride = 1 << lvl; + int prev_stride = *r_stride << 1; + for (int i = 0; i < cell_count; ++i) { + *r_final_idx = i; + cell_id_to_grid_loc(egrid, *r_final_idx, r_local_cell); + if (((r_local_cell[0] % *r_stride) == 0) && + ((r_local_cell[1] % *r_stride) == 0) && + ((r_local_cell[2] % *r_stride) == 0)) + { + if (!(((r_local_cell[0] % prev_stride) == 0) && + ((r_local_cell[1] % prev_stride) == 0) && + ((r_local_cell[2] % prev_stride) == 0)) || + ((i == 0) && (lvl == max_lvl))) + { + if (visited_cells == cell_idx) { + return; + } + else { + visited_cells++; + } + } + } + } + } + + BLI_assert(0); +} + +static void grid_loc_to_world_loc(EEVEE_LightGrid *egrid, int local_cell[3], float r_pos[3]) +{ + copy_v3_v3(r_pos, egrid->corner); + madd_v3_v3fl(r_pos, egrid->increment_x, local_cell[0]); + madd_v3_v3fl(r_pos, egrid->increment_y, local_cell[1]); + madd_v3_v3fl(r_pos, egrid->increment_z, local_cell[2]); +} + +static void eevee_lightbake_render_grid_sample(void *ved, void *user_data) +{ + EEVEE_Data *vedata = (EEVEE_Data *)ved; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_LightBake *lbake = (EEVEE_LightBake *)user_data; + EEVEE_LightGrid *egrid = lbake->grid; + LightProbe *prb = *lbake->probe; + Scene *scene_eval = DEG_get_evaluated_scene(lbake->depsgraph); + LightCache *lcache = scene_eval->eevee.light_cache; + int grid_loc[3], sample_id, sample_offset, stride; + float pos[3]; + const bool is_last_bounce_sample = ((egrid->offset + lbake->grid_sample) == (lbake->total_irr_samples - 1)); + + /* No bias for rendering the probe. */ + egrid->level_bias = 1.0f; + + /* Use the previous bounce for rendering this bounce. */ + SWAP(GPUTexture *, lbake->grid_prev, lcache->grid_tx.tex); + + /* TODO do this once for the whole bake when we have independent DRWManagers. + * Warning: Some of the things above require this. */ + eevee_lightbake_cache_create(vedata, lbake); + + /* Compute sample position */ + compute_cell_id(egrid, prb, lbake->grid_sample, &sample_id, grid_loc, &stride); + sample_offset = egrid->offset + sample_id; + + grid_loc_to_world_loc(egrid, grid_loc, pos); + + /* Disable specular lighting when rendering probes to avoid feedback loops (looks bad). */ + common_data->spec_toggle = false; + common_data->prb_num_planar = 0; + common_data->prb_num_render_cube = 0; + common_data->ray_type = EEVEE_RAY_DIFFUSE; + common_data->ray_depth = lbake->bounce_curr + 1; + if (lbake->bounce_curr == 0) { + common_data->prb_num_render_grid = 0; + } + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + + EEVEE_lightbake_render_scene(sldata, vedata, lbake->rt_fb, pos, prb->clipsta, prb->clipend); + + /* Restore before filtering. */ + SWAP(GPUTexture *, lbake->grid_prev, lcache->grid_tx.tex); + + EEVEE_lightbake_filter_diffuse(sldata, vedata, lbake->rt_color, lbake->store_fb, sample_offset, prb->intensity); + + if (lbake->bounce_curr == 0) { + /* We only need to filter the visibility for the first bounce. */ + EEVEE_lightbake_filter_visibility(sldata, vedata, lbake->rt_depth, lbake->store_fb, sample_offset, + prb->clipsta, prb->clipend, egrid->visibility_range, + prb->vis_blur, lbake->vis_res); + } + + /* Update level for progressive update. */ + if (is_last_bounce_sample) { + egrid->level_bias = 1.0f; + } + else if (lbake->bounce_curr == 0) { + egrid->level_bias = (float)(stride << 1); + } + + /* Only run this for the last sample of a bounce. */ + if (is_last_bounce_sample) { + eevee_lightbake_copy_irradiance(lbake, lcache); + } + + /* If it is the last sample grid sample (and last bounce). */ + if ((lbake->bounce_curr == lbake->bounce_len - 1) && + (lbake->grid_curr == lbake->grid_len - 1) && + (lbake->grid_sample == lbake->grid_sample_len - 1)) + { + lcache->flag &= ~LIGHTCACHE_UPDATE_GRID; + } +} + +static void eevee_lightbake_render_probe_sample(void *ved, void *user_data) +{ + EEVEE_Data *vedata = (EEVEE_Data *)ved; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_LightBake *lbake = (EEVEE_LightBake *)user_data; + Scene *scene_eval = DEG_get_evaluated_scene(lbake->depsgraph); + LightCache *lcache = scene_eval->eevee.light_cache; + EEVEE_LightProbe *eprobe = lbake->cube; + LightProbe *prb = *lbake->probe; + float clamp = scene_eval->eevee.gi_glossy_clamp; + float filter_quality = scene_eval->eevee.gi_filter_quality; + + /* TODO do this once for the whole bake when we have independent DRWManagers. */ + eevee_lightbake_cache_create(vedata, lbake); + + /* Disable specular lighting when rendering probes to avoid feedback loops (looks bad). */ + common_data->spec_toggle = false; + common_data->prb_num_planar = 0; + common_data->prb_num_render_cube = 0; + common_data->ray_type = EEVEE_RAY_GLOSSY; + common_data->ray_depth = 1; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + + EEVEE_lightbake_render_scene(sldata, vedata, lbake->rt_fb, eprobe->position, prb->clipsta, prb->clipend); + EEVEE_lightbake_filter_glossy( + sldata, vedata, lbake->rt_color, lbake->store_fb, lbake->cube_offset, prb->intensity, + lcache->mips_len, filter_quality, clamp); + + lcache->cube_len += 1; + + /* If it's the last probe. */ + if (lbake->cube_offset == lbake->cube_len - 1) { + lcache->flag &= ~LIGHTCACHE_UPDATE_CUBE; + } +} + +static float eevee_lightbake_grid_influence_volume(EEVEE_LightGrid *grid) +{ + return mat4_to_scale(grid->mat); +} + +static float eevee_lightbake_cube_influence_volume(EEVEE_LightProbe *eprb) +{ + return mat4_to_scale(eprb->attenuationmat); +} + +static bool eevee_lightbake_grid_comp(EEVEE_LightGrid *grid_a, EEVEE_LightGrid *grid_b) +{ + float vol_a = eevee_lightbake_grid_influence_volume(grid_a); + float vol_b = eevee_lightbake_grid_influence_volume(grid_b); + return (vol_a < vol_b); +} + +static bool eevee_lightbake_cube_comp(EEVEE_LightProbe *prb_a, EEVEE_LightProbe *prb_b) +{ + float vol_a = eevee_lightbake_cube_influence_volume(prb_a); + float vol_b = eevee_lightbake_cube_influence_volume(prb_b); + return (vol_a < vol_b); +} + +#define SORT_PROBE(elems_type, prbs, elems, elems_len, comp_fn) \ +{ \ + bool sorted = false; \ + while (!sorted) { \ + sorted = true; \ + for (int i = 0; i < (elems_len) - 1; ++i) { \ + if ((comp_fn)((elems) + i, (elems) + i+1)) { \ + SWAP(elems_type, (elems)[i], (elems)[i+1]); \ + SWAP(LightProbe *, (prbs)[i], (prbs)[i+1]); \ + sorted = false; \ + } \ + } \ + } \ +} + +static void eevee_lightbake_gather_probes(EEVEE_LightBake *lbake) +{ + Depsgraph *depsgraph = lbake->depsgraph; + Scene *scene_eval = DEG_get_evaluated_scene(depsgraph); + LightCache *lcache = scene_eval->eevee.light_cache; + + /* At least one for the world */ + int grid_len = 1; + int cube_len = 1; + int total_irr_samples = 1; + + /* Convert all lightprobes to tight UBO data from all lightprobes in the scene. + * This allows a large number of probe to be precomputed (even dupli ones). */ + DEG_OBJECT_ITER_FOR_RENDER_ENGINE_BEGIN(depsgraph, ob) + { + if (!BKE_object_is_visible(ob, OB_VISIBILITY_CHECK_FOR_RENDER)) { + continue; + } + + if (ob->type == OB_LIGHTPROBE) { + LightProbe *prb = (LightProbe *)ob->data; + + if (prb->type == LIGHTPROBE_TYPE_GRID) { + lbake->grid_prb[grid_len] = prb; + EEVEE_LightGrid *egrid = &lcache->grid_data[grid_len++]; + EEVEE_lightprobes_grid_data_from_object(ob, egrid, &total_irr_samples); + } + else if (prb->type == LIGHTPROBE_TYPE_CUBE) { + lbake->cube_prb[cube_len] = prb; + EEVEE_LightProbe *eprobe = &lcache->cube_data[cube_len++]; + EEVEE_lightprobes_cube_data_from_object(ob, eprobe); + } + } + } + DEG_OBJECT_ITER_FOR_RENDER_ENGINE_END; + + SORT_PROBE(EEVEE_LightGrid, lbake->grid_prb + 1, lcache->grid_data + 1, lbake->grid_len - 1, eevee_lightbake_grid_comp); + SORT_PROBE(EEVEE_LightProbe, lbake->cube_prb + 1, lcache->cube_data + 1, lbake->cube_len - 1, eevee_lightbake_cube_comp); + + lbake->total = lbake->total_irr_samples * lbake->bounce_len + lbake->cube_len; + lbake->done = 0; +} + +void EEVEE_lightbake_update(void *custom_data) +{ + EEVEE_LightBake *lbake = (EEVEE_LightBake *)custom_data; + Scene *scene_orig = lbake->scene; + + /* If a new lightcache was created, free the old one and reference the new. */ + if (lbake->lcache && scene_orig->eevee.light_cache != lbake->lcache) { + if (scene_orig->eevee.light_cache != NULL) { + EEVEE_lightcache_free(scene_orig->eevee.light_cache); + } + scene_orig->eevee.light_cache = lbake->lcache; + lbake->own_light_cache = false; + } + + EEVEE_lightcache_info_update(&lbake->scene->eevee); + + DEG_id_tag_update(&scene_orig->id, DEG_TAG_COPY_ON_WRITE); +} + +static bool lightbake_do_sample(EEVEE_LightBake *lbake, void (*render_callback)(void *ved, void *user_data)) +{ + if (G.is_break == true || *lbake->stop) { + return false; + } + + Depsgraph *depsgraph = lbake->depsgraph; + + /* TODO: make DRW manager instanciable (and only lock on drawing) */ + eevee_lightbake_context_enable(lbake); + DRW_custom_pipeline(&draw_engine_eevee_type, depsgraph, render_callback, lbake); + lbake->done += 1; + *lbake->progress = lbake->done / (float)lbake->total; + *lbake->do_update = 1; + eevee_lightbake_context_disable(lbake); + + return true; +} + +void EEVEE_lightbake_job(void *custom_data, short *stop, short *do_update, float *progress) +{ + EEVEE_LightBake *lbake = (EEVEE_LightBake *)custom_data; + Depsgraph *depsgraph = lbake->depsgraph; + int frame = 0; /* TODO make it user param. */ + + DEG_graph_relations_update(depsgraph, lbake->bmain, lbake->scene, lbake->view_layer_input); + DEG_evaluate_on_framechange(lbake->bmain, depsgraph, frame); + + lbake->view_layer = DEG_get_evaluated_view_layer(depsgraph); + lbake->stop = stop; + lbake->do_update = do_update; + lbake->progress = progress; + + /* Count lightprobes */ + eevee_lightbake_count_probes(lbake); + + /* We need to create the FBOs in the right context. + * We cannot do it in the main thread. */ + eevee_lightbake_context_enable(lbake); + eevee_lightbake_create_resources(lbake); + eevee_lightbake_create_render_target(lbake, lbake->rt_res); + eevee_lightbake_context_disable(lbake); + + /* Gather all probes data */ + eevee_lightbake_gather_probes(lbake); + + LightCache *lcache = lbake->lcache; + + /* HACK: Sleep to delay the first rendering operation + * that causes a small freeze (caused by VBO generation) + * because this step is locking at this moment. */ + /* TODO remove this. */ + if (lbake->delay) { + PIL_sleep_ms(lbake->delay); + } + + /* Render world irradiance and reflection first */ + if (lcache->flag & LIGHTCACHE_UPDATE_WORLD) { + lbake->probe = NULL; + lightbake_do_sample(lbake, eevee_lightbake_render_world_sample); + } + + /* Render irradiance grids */ + if (lcache->flag & LIGHTCACHE_UPDATE_GRID) { + for (lbake->bounce_curr = 0; lbake->bounce_curr < lbake->bounce_len; ++lbake->bounce_curr) { + /* Bypass world, start at 1. */ + lbake->probe = lbake->grid_prb + 1; + lbake->grid = lcache->grid_data + 1; + for (lbake->grid_curr = 1; + lbake->grid_curr < lbake->grid_len; + ++lbake->grid_curr, ++lbake->probe, ++lbake->grid) + { + LightProbe *prb = *lbake->probe; + lbake->grid_sample_len = prb->grid_resolution_x * + prb->grid_resolution_y * + prb->grid_resolution_z; + for (lbake->grid_sample = 0; + lbake->grid_sample < lbake->grid_sample_len; + ++lbake->grid_sample) + { + lightbake_do_sample(lbake, eevee_lightbake_render_grid_sample); + } + } + } + } + + /* Render reflections */ + if (lcache->flag & LIGHTCACHE_UPDATE_CUBE) { + /* Bypass world, start at 1. */ + lbake->probe = lbake->cube_prb + 1; + lbake->cube = lcache->cube_data + 1; + for (lbake->cube_offset = 1; + lbake->cube_offset < lbake->cube_len; + ++lbake->cube_offset, ++lbake->probe, ++lbake->cube) + { + lightbake_do_sample(lbake, eevee_lightbake_render_probe_sample); + } + } + + /* Read the resulting lighting data to save it to file/disk. */ + eevee_lightbake_context_enable(lbake); + eevee_lightbake_readback_irradiance(lcache); + eevee_lightbake_readback_reflections(lcache); + eevee_lightbake_context_disable(lbake); + + lcache->flag |= LIGHTCACHE_BAKED; + lcache->flag &= ~LIGHTCACHE_BAKING; + + /* Assume that if lbake->gl_context is NULL + * we are not running in this in a job, so update + * the scene lightcache pointer before deleting it. */ + if (lbake->gl_context == NULL) { + BLI_assert(BLI_thread_is_main()); + EEVEE_lightbake_update(lbake); + } + + eevee_lightbake_delete_resources(lbake); +} + +/* This is to update the world irradiance and reflection contribution from + * within the viewport drawing (does not have the overhead of a full light cache rebuild.) */ +void EEVEE_lightbake_update_world_quick(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, const Scene *scene) +{ + LightCache *lcache = vedata->stl->g_data->light_cache; + float clamp = scene->eevee.gi_glossy_clamp; + float filter_quality = scene->eevee.gi_filter_quality; + + EEVEE_LightBake lbake = { + .resource_only = true + }; + + /* Create resources. */ + eevee_lightbake_create_render_target(&lbake, scene->eevee.gi_cubemap_resolution); + + EEVEE_lightbake_cache_init(sldata, vedata, lbake.rt_color, lbake.rt_depth); + + sldata->common_data.ray_type = EEVEE_RAY_GLOSSY; + sldata->common_data.ray_depth = 1; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + EEVEE_lightbake_render_world(sldata, vedata, lbake.rt_fb); + EEVEE_lightbake_filter_glossy(sldata, vedata, lbake.rt_color, lbake.store_fb, 0, 1.0f, lcache->mips_len, + filter_quality, clamp); + + sldata->common_data.ray_type = EEVEE_RAY_DIFFUSE; + sldata->common_data.ray_depth = 1; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + EEVEE_lightbake_render_world(sldata, vedata, lbake.rt_fb); + EEVEE_lightbake_filter_diffuse(sldata, vedata, lbake.rt_color, lbake.store_fb, 0, 1.0f); + + /* Don't hide grids if they are already rendered. */ + lcache->grid_len = max_ii(1, lcache->grid_len); + lcache->cube_len = 1; + + lcache->flag |= LIGHTCACHE_CUBE_READY | LIGHTCACHE_GRID_READY; + lcache->flag &= ~LIGHTCACHE_UPDATE_WORLD; + + eevee_lightbake_delete_resources(&lbake); +} + +/** \} */ diff --git a/source/blender/draw/engines/eevee/eevee_lightcache.h b/source/blender/draw/engines/eevee/eevee_lightcache.h new file mode 100644 index 00000000000..3c6fc73a849 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_lightcache.h @@ -0,0 +1,59 @@ +/* + * Copyright 2018, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_lightcache.h + * \ingroup eevee + */ + +#ifndef __EEVEE_LIGHTCACHE_H__ +#define __EEVEE_LIGHTCACHE_H__ + +#include "BLI_sys_types.h" /* for bool */ + +struct ViewLayer; +struct Scene; +struct SceneEEVEE; +struct LightCache; +struct EEVEE_ViewLayerData; +struct EEVEE_Data; +struct EEVEE_LightBake; + +/* Light Bake */ +struct wmJob *EEVEE_lightbake_job_create( + struct wmWindowManager *wm, struct wmWindow *win, struct Main *bmain, + struct ViewLayer *view_layer, struct Scene *scene, int delay); +void *EEVEE_lightbake_job_data_alloc(struct Main *bmain, struct ViewLayer *viewlayer, struct Scene *scene, bool run_as_job); +void EEVEE_lightbake_job_data_free(void *custom_data); +void EEVEE_lightbake_update(void *custom_data); +void EEVEE_lightbake_job(void *custom_data, short *stop, short *do_update, float *progress); + +void EEVEE_lightbake_update_world_quick(struct EEVEE_ViewLayerData *sldata, struct EEVEE_Data *vedata, const Scene *scene); + +/* Light Cache */ +struct LightCache *EEVEE_lightcache_create( + const int grid_len, const int cube_len, + const int cube_size, const int vis_size, + const int irr_size[3]); +void EEVEE_lightcache_free(struct LightCache *lcache); +void EEVEE_lightcache_load(struct LightCache *lcache); +void EEVEE_lightcache_info_update(struct SceneEEVEE *eevee); + +#endif /* __EEVEE_LIGHTCACHE_H__ */ diff --git a/source/blender/draw/engines/eevee/eevee_lightprobes.c b/source/blender/draw/engines/eevee/eevee_lightprobes.c new file mode 100644 index 00000000000..0b4341f5cb9 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_lightprobes.c @@ -0,0 +1,1239 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_lightprobes.c + * \ingroup draw_engine + */ + +#include "DRW_render.h" + +#include "BLI_utildefines.h" +#include "BLI_string_utils.h" +#include "BLI_rand.h" + +#include "DNA_world_types.h" +#include "DNA_texture_types.h" +#include "DNA_image_types.h" +#include "DNA_lightprobe_types.h" +#include "DNA_view3d_types.h" + +#include "BKE_collection.h" +#include "BKE_object.h" +#include "MEM_guardedalloc.h" + +#include "GPU_material.h" +#include "GPU_texture.h" +#include "GPU_glew.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_engine.h" +#include "eevee_lightcache.h" +#include "eevee_private.h" + +#include "ED_screen.h" + +#include "WM_api.h" +#include "WM_types.h" + +static struct { + struct GPUTexture *hammersley; + struct GPUTexture *planar_pool_placeholder; + struct GPUTexture *depth_placeholder; + struct GPUTexture *depth_array_placeholder; + struct GPUTexture *cube_face_minmaxz; + + struct GPUVertFormat *format_probe_display_cube; + struct GPUVertFormat *format_probe_display_planar; +} e_data = {NULL}; /* Engine data */ + +extern GlobalsUboStorage ts; + +/* *********** FUNCTIONS *********** */ + +/* TODO find a better way than this. This does not support dupli objects if + * the original object is hidden. */ +bool EEVEE_lightprobes_obj_visibility_cb(bool vis_in, void *user_data) +{ + EEVEE_ObjectEngineData *oed = (EEVEE_ObjectEngineData *)user_data; + + /* test disabled if group is NULL */ + if (oed->test_data->collection == NULL) + return vis_in; + + if (oed->test_data->cached == false) + oed->ob_vis_dirty = true; + + /* early out, don't need to compute ob_vis yet. */ + if (vis_in == false) + return vis_in; + + if (oed->ob_vis_dirty) { + oed->ob_vis_dirty = false; + oed->ob_vis = BKE_collection_has_object_recursive(oed->test_data->collection, oed->ob); + oed->ob_vis = (oed->test_data->invert) ? !oed->ob_vis : oed->ob_vis; + } + + return vis_in && oed->ob_vis; +} + +static struct GPUTexture *create_hammersley_sample_texture(int samples) +{ + struct GPUTexture *tex; + float (*texels)[2] = MEM_mallocN(sizeof(float[2]) * samples, "hammersley_tex"); + int i; + + for (i = 0; i < samples; i++) { + double dphi; + BLI_hammersley_1D(i, &dphi); + float phi = (float)dphi * 2.0f * M_PI; + texels[i][0] = cosf(phi); + texels[i][1] = sinf(phi); + } + + tex = DRW_texture_create_1D(samples, GPU_RG16F, DRW_TEX_WRAP, (float *)texels); + MEM_freeN(texels); + return tex; +} + +static void planar_pool_ensure_alloc(EEVEE_Data *vedata, int num_planar_ref) +{ + EEVEE_TextureList *txl = vedata->txl; + + /* XXX TODO OPTIMISATION : This is a complete waist of texture memory. + * Instead of allocating each planar probe for each viewport, + * only alloc them once using the biggest viewport resolution. */ + const float *viewport_size = DRW_viewport_size_get(); + + /* TODO get screen percentage from layer setting */ + // const DRWContextState *draw_ctx = DRW_context_state_get(); + // ViewLayer *view_layer = draw_ctx->view_layer; + float screen_percentage = 1.0f; + + int width = (int)(viewport_size[0] * screen_percentage); + int height = (int)(viewport_size[1] * screen_percentage); + + /* We need an Array texture so allocate it ourself */ + if (!txl->planar_pool) { + if (num_planar_ref > 0) { + txl->planar_pool = DRW_texture_create_2D_array(width, height, max_ff(1, num_planar_ref), + GPU_R11F_G11F_B10F, DRW_TEX_FILTER | DRW_TEX_MIPMAP, NULL); + txl->planar_depth = DRW_texture_create_2D_array(width, height, max_ff(1, num_planar_ref), + GPU_DEPTH_COMPONENT24, 0, NULL); + } + else if (num_planar_ref == 0) { + /* Makes Opengl Happy : Create a placeholder texture that will never be sampled but still bound to shader. */ + txl->planar_pool = DRW_texture_create_2D_array(1, 1, 1, GPU_RGBA8, DRW_TEX_FILTER | DRW_TEX_MIPMAP, NULL); + txl->planar_depth = DRW_texture_create_2D_array(1, 1, 1, GPU_DEPTH_COMPONENT24, 0, NULL); + } + } +} + +void EEVEE_lightprobes_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_StorageList *stl = vedata->stl; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (!e_data.hammersley) { + EEVEE_shaders_lightprobe_shaders_init(); + e_data.hammersley = create_hammersley_sample_texture(HAMMERSLEY_SIZE); + } + + /* Use fallback if we don't have gpu texture allocated an we cannot restore them. */ + bool use_fallback_lightcache = (scene_eval->eevee.light_cache == NULL) || + ((scene_eval->eevee.light_cache->grid_tx.tex == NULL) && + (scene_eval->eevee.light_cache->grid_tx.data == NULL)) || + ((scene_eval->eevee.light_cache->cube_tx.tex == NULL) && + (scene_eval->eevee.light_cache->cube_tx.data == NULL)); + + if (use_fallback_lightcache && (sldata->fallback_lightcache == NULL)) { +#if defined(IRRADIANCE_SH_L2) + int grid_res = 4; +#elif defined(IRRADIANCE_CUBEMAP) + int grid_res = 8; +#elif defined(IRRADIANCE_HL2) + int grid_res = 4; +#endif + int cube_res = OCTAHEDRAL_SIZE_FROM_CUBESIZE(scene_eval->eevee.gi_cubemap_resolution); + int vis_res = scene_eval->eevee.gi_visibility_resolution; + sldata->fallback_lightcache = EEVEE_lightcache_create(1, 1, cube_res, vis_res, (int[3]){grid_res, grid_res, 1}); + } + + stl->g_data->light_cache = (use_fallback_lightcache) ? sldata->fallback_lightcache : scene_eval->eevee.light_cache; + + EEVEE_lightcache_load(stl->g_data->light_cache); + + if (!sldata->probes) { + sldata->probes = MEM_callocN(sizeof(EEVEE_LightProbesInfo), "EEVEE_LightProbesInfo"); + sldata->probe_ubo = DRW_uniformbuffer_create(sizeof(EEVEE_LightProbe) * MAX_PROBE, NULL); + sldata->grid_ubo = DRW_uniformbuffer_create(sizeof(EEVEE_LightGrid) * MAX_GRID, NULL); + sldata->planar_ubo = DRW_uniformbuffer_create(sizeof(EEVEE_PlanarReflection) * MAX_PLANAR, NULL); + } + + common_data->prb_num_planar = 0; + common_data->prb_num_render_cube = 1; + common_data->prb_num_render_grid = 1; + + common_data->spec_toggle = true; + common_data->ssr_toggle = true; + common_data->sss_toggle = true; + + /* Placeholder planar pool: used when rendering planar reflections (avoid dependency loop). */ + if (!e_data.planar_pool_placeholder) { + e_data.planar_pool_placeholder = DRW_texture_create_2D_array(1, 1, 1, GPU_RGBA8, DRW_TEX_FILTER, NULL); + } +} + +/* Only init the passes useful for rendering the light cache. */ +void EEVEE_lightbake_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, GPUTexture *rt_color, GPUTexture *rt_depth) +{ + EEVEE_PassList *psl = vedata->psl; + LightCache *light_cache = vedata->stl->g_data->light_cache; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + + { + psl->probe_glossy_compute = DRW_pass_create("LightProbe Glossy Compute", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create( + EEVEE_shaders_probe_filter_glossy_sh_get(), psl->probe_glossy_compute); + + DRW_shgroup_uniform_float(grp, "intensityFac", &pinfo->intensity_fac, 1); + DRW_shgroup_uniform_float(grp, "sampleCount", &pinfo->samples_len, 1); + DRW_shgroup_uniform_float(grp, "invSampleCount", &pinfo->samples_len_inv, 1); + DRW_shgroup_uniform_float(grp, "roughnessSquared", &pinfo->roughness, 1); + DRW_shgroup_uniform_float(grp, "lodFactor", &pinfo->lodfactor, 1); + DRW_shgroup_uniform_float(grp, "lodMax", &pinfo->lod_rt_max, 1); + DRW_shgroup_uniform_float(grp, "texelSize", &pinfo->texel_size, 1); + DRW_shgroup_uniform_float(grp, "paddingSize", &pinfo->padding_size, 1); + DRW_shgroup_uniform_float(grp, "fireflyFactor", &pinfo->firefly_fac, 1); + DRW_shgroup_uniform_int(grp, "Layer", &pinfo->layer, 1); + DRW_shgroup_uniform_texture(grp, "texHammersley", e_data.hammersley); + // DRW_shgroup_uniform_texture(grp, "texJitter", e_data.jitter); + DRW_shgroup_uniform_texture(grp, "probeHdr", rt_color); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRW_shgroup_call_add(grp, geom, NULL); + } + + { + psl->probe_diffuse_compute = DRW_pass_create("LightProbe Diffuse Compute", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create( + EEVEE_shaders_probe_filter_diffuse_sh_get(), psl->probe_diffuse_compute); +#ifdef IRRADIANCE_SH_L2 + DRW_shgroup_uniform_int(grp, "probeSize", &pinfo->shres, 1); +#else + DRW_shgroup_uniform_float(grp, "sampleCount", &pinfo->samples_len, 1); + DRW_shgroup_uniform_float(grp, "invSampleCount", &pinfo->samples_len_inv, 1); + DRW_shgroup_uniform_float(grp, "lodFactor", &pinfo->lodfactor, 1); + DRW_shgroup_uniform_float(grp, "lodMax", &pinfo->lod_rt_max, 1); + DRW_shgroup_uniform_texture(grp, "texHammersley", e_data.hammersley); +#endif + DRW_shgroup_uniform_float(grp, "intensityFac", &pinfo->intensity_fac, 1); + DRW_shgroup_uniform_texture(grp, "probeHdr", rt_color); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRW_shgroup_call_add(grp, geom, NULL); + } + + { + psl->probe_visibility_compute = DRW_pass_create("LightProbe Visibility Compute", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create(EEVEE_shaders_probe_filter_visibility_sh_get(), psl->probe_visibility_compute); + DRW_shgroup_uniform_int(grp, "outputSize", &pinfo->shres, 1); + DRW_shgroup_uniform_float(grp, "visibilityRange", &pinfo->visibility_range, 1); + DRW_shgroup_uniform_float(grp, "visibilityBlur", &pinfo->visibility_blur, 1); + DRW_shgroup_uniform_float(grp, "sampleCount", &pinfo->samples_len, 1); + DRW_shgroup_uniform_float(grp, "invSampleCount", &pinfo->samples_len_inv, 1); + DRW_shgroup_uniform_float(grp, "storedTexelSize", &pinfo->texel_size, 1); + DRW_shgroup_uniform_float(grp, "nearClip", &pinfo->near_clip, 1); + DRW_shgroup_uniform_float(grp, "farClip", &pinfo->far_clip, 1); + DRW_shgroup_uniform_texture(grp, "texHammersley", e_data.hammersley); + DRW_shgroup_uniform_texture(grp, "probeDepth", rt_depth); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRW_shgroup_call_add(grp, geom, NULL); + } + + { + psl->probe_grid_fill = DRW_pass_create("LightProbe Grid Floodfill", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create( + EEVEE_shaders_probe_grid_fill_sh_get(), psl->probe_grid_fill); + + DRW_shgroup_uniform_texture_ref(grp, "irradianceGrid", &light_cache->grid_tx.tex); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRW_shgroup_call_add(grp, geom, NULL); + } +} + +void EEVEE_lightprobes_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_TextureList *txl = vedata->txl; + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + LightCache *lcache = stl->g_data->light_cache; + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + pinfo->num_planar = 0; + pinfo->vis_data.collection = NULL; + pinfo->do_grid_update = false; + pinfo->do_cube_update = false; + + { + psl->probe_background = DRW_pass_create("World Probe Background Pass", DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRWShadingGroup *grp = NULL; + + Scene *scene = draw_ctx->scene; + World *wo = scene->world; + + float *col = ts.colorBackground; + + /* LookDev */ + EEVEE_lookdev_cache_init(vedata, &grp, psl->probe_background, wo, pinfo); + /* END */ + if (!grp && wo) { + col = &wo->horr; + + if (wo->use_nodes && wo->nodetree) { + static float error_col[3] = {1.0f, 0.0f, 1.0f}; + struct GPUMaterial *gpumat = EEVEE_material_world_lightprobe_get(scene, wo); + + GPUMaterialStatus status = GPU_material_status(gpumat); + + switch (status) { + case GPU_MAT_SUCCESS: + grp = DRW_shgroup_material_create(gpumat, psl->probe_background); + DRW_shgroup_uniform_float(grp, "backgroundAlpha", &stl->g_data->background_alpha, 1); + /* TODO (fclem): remove those (need to clean the GLSL files). */ + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(grp, "shadow_block", sldata->shadow_ubo); + DRW_shgroup_call_add(grp, geom, NULL); + break; + default: + col = error_col; + break; + } + } + } + + /* Fallback if shader fails or if not using nodetree. */ + if (grp == NULL) { + grp = DRW_shgroup_create(EEVEE_shaders_probe_default_sh_get(), psl->probe_background); + DRW_shgroup_uniform_vec3(grp, "color", col, 1); + DRW_shgroup_uniform_float(grp, "backgroundAlpha", &stl->g_data->background_alpha, 1); + DRW_shgroup_call_add(grp, geom, NULL); + } + } + + if (DRW_state_draw_support() && !LOOK_DEV_STUDIO_LIGHT_ENABLED(draw_ctx->v3d)) { + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_BACK; + psl->probe_display = DRW_pass_create("LightProbe Display", state); + + /* Cube Display */ + if (scene_eval->eevee.flag & SCE_EEVEE_SHOW_CUBEMAPS && lcache->cube_len > 1) { + int cube_len = lcache->cube_len - 1; /* don't count the world. */ + DRWShadingGroup *grp = DRW_shgroup_empty_tri_batch_create( + EEVEE_shaders_probe_cube_display_sh_get(), psl->probe_display, cube_len * 2); + + DRW_shgroup_uniform_texture_ref(grp, "probeCubes", &lcache->cube_tx.tex); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_vec3(grp, "screen_vecs[0]", DRW_viewport_screenvecs_get(), 2); + DRW_shgroup_uniform_float_copy(grp, "sphere_size", scene_eval->eevee.gi_cubemap_draw_size * 0.5f); + /* TODO (fclem) get rid of those UBO. */ + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + } + + /* Grid Display */ + if (scene_eval->eevee.flag & SCE_EEVEE_SHOW_IRRADIANCE) { + EEVEE_LightGrid *egrid = lcache->grid_data + 1; + for (int p = 1; p < lcache->grid_len; ++p, egrid++) { + DRWShadingGroup *shgrp = DRW_shgroup_create( + EEVEE_shaders_probe_grid_display_sh_get(), psl->probe_display); + + DRW_shgroup_uniform_int(shgrp, "offset", &egrid->offset, 1); + DRW_shgroup_uniform_ivec3(shgrp, "grid_resolution", egrid->resolution, 1); + DRW_shgroup_uniform_vec3(shgrp, "corner", egrid->corner, 1); + DRW_shgroup_uniform_vec3(shgrp, "increment_x", egrid->increment_x, 1); + DRW_shgroup_uniform_vec3(shgrp, "increment_y", egrid->increment_y, 1); + DRW_shgroup_uniform_vec3(shgrp, "increment_z", egrid->increment_z, 1); + DRW_shgroup_uniform_vec3(shgrp, "screen_vecs[0]", DRW_viewport_screenvecs_get(), 2); + DRW_shgroup_uniform_texture_ref(shgrp, "irradianceGrid", &lcache->grid_tx.tex); + DRW_shgroup_uniform_float_copy(shgrp, "sphere_size", scene_eval->eevee.gi_irradiance_draw_size * 0.5f); + /* TODO (fclem) get rid of those UBO. */ + DRW_shgroup_uniform_block(shgrp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(shgrp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(shgrp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(shgrp, "common_block", sldata->common_ubo); + int tri_count = egrid->resolution[0] * egrid->resolution[1] * egrid->resolution[2] * 2; + DRW_shgroup_call_procedural_triangles_add(shgrp, tri_count, NULL); + } + } + + /* Planar Display */ + DRW_shgroup_instance_format(e_data.format_probe_display_planar, { + {"probe_id", DRW_ATTRIB_INT, 1}, + {"probe_mat", DRW_ATTRIB_FLOAT, 16}, + }); + + DRWShadingGroup *grp = DRW_shgroup_instance_create( + EEVEE_shaders_probe_planar_display_sh_get(), + psl->probe_display, + DRW_cache_quad_get(), + e_data.format_probe_display_planar); + stl->g_data->planar_display_shgrp = grp; + DRW_shgroup_uniform_texture_ref(grp, "probePlanars", &txl->planar_pool); + } + else { + stl->g_data->planar_display_shgrp = NULL; + } + + { + psl->probe_planar_downsample_ps = DRW_pass_create("LightProbe Planar Downsample", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create( + EEVEE_shaders_probe_planar_downsample_sh_get(), psl->probe_planar_downsample_ps); + + DRW_shgroup_uniform_texture_ref(grp, "source", &txl->planar_pool); + DRW_shgroup_uniform_float(grp, "fireflyFactor", &sldata->common_data.ssr_firefly_fac, 1); + DRW_shgroup_call_instances_add(grp, DRW_cache_fullscreen_quad_get(), NULL, (uint *)&pinfo->num_planar); + } +} + +static bool eevee_lightprobes_culling_test(Object *ob) +{ + LightProbe *probe = (LightProbe *)ob->data; + + switch (probe->type) { + case LIGHTPROBE_TYPE_PLANAR: + { + /* See if this planar probe is inside the view frustum. If not, no need to update it. */ + /* NOTE: this could be bypassed if we want feedback loop mirrors for rendering. */ + BoundBox bbox; float tmp[4][4]; + const float min[3] = {-1.0f, -1.0f, -1.0f}; + const float max[3] = { 1.0f, 1.0f, 1.0f}; + BKE_boundbox_init_from_minmax(&bbox, min, max); + + copy_m4_m4(tmp, ob->obmat); + normalize_v3(tmp[2]); + mul_v3_fl(tmp[2], probe->distinf); + + for (int v = 0; v < 8; ++v) { + mul_m4_v3(tmp, bbox.vec[v]); + } + return DRW_culling_box_test(&bbox); + } + case LIGHTPROBE_TYPE_CUBE: + return true; /* TODO */ + case LIGHTPROBE_TYPE_GRID: + return true; /* TODO */ + } + BLI_assert(0); + return true; +} + +void EEVEE_lightprobes_cache_add(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Object *ob) +{ + EEVEE_LightProbesInfo *pinfo = sldata->probes; + LightProbe *probe = (LightProbe *)ob->data; + + if ((probe->type == LIGHTPROBE_TYPE_CUBE && pinfo->num_cube >= MAX_PROBE) || + (probe->type == LIGHTPROBE_TYPE_GRID && pinfo->num_grid >= MAX_PROBE) || + (probe->type == LIGHTPROBE_TYPE_PLANAR && pinfo->num_planar >= MAX_PLANAR)) + { + printf("Too many probes in the view !!!\n"); + return; + } + + if (probe->type == LIGHTPROBE_TYPE_PLANAR) { + if (!eevee_lightprobes_culling_test(ob)) { + return; /* Culled */ + } + EEVEE_lightprobes_planar_data_from_object(ob, + &pinfo->planar_data[pinfo->num_planar], + &pinfo->planar_vis_tests[pinfo->num_planar]); + /* Debug Display */ + DRWShadingGroup *grp = vedata->stl->g_data->planar_display_shgrp; + if (grp && (probe->flag & LIGHTPROBE_FLAG_SHOW_DATA)) { + DRW_shgroup_call_dynamic_add(grp, &pinfo->num_planar, ob->obmat); + } + + pinfo->num_planar++; + } + else { + EEVEE_LightProbeEngineData *ped = EEVEE_lightprobe_data_ensure(ob); + if (ped->need_update) { + if (probe->type == LIGHTPROBE_TYPE_GRID) { + pinfo->do_grid_update = true; + } + else { + pinfo->do_cube_update = true; + } + ped->need_update = false; + } + } +} + +void EEVEE_lightprobes_grid_data_from_object(Object *ob, EEVEE_LightGrid *egrid, int *offset) +{ + LightProbe *probe = (LightProbe *)ob->data; + + copy_v3_v3_int(egrid->resolution, &probe->grid_resolution_x); + + /* Save current offset and advance it for the next grid. */ + egrid->offset = *offset; + *offset += egrid->resolution[0] * egrid->resolution[1] * egrid->resolution[2]; + + /* Add one for level 0 */ + float fac = 1.0f / max_ff(1e-8f, probe->falloff); + egrid->attenuation_scale = fac / max_ff(1e-8f, probe->distinf); + egrid->attenuation_bias = fac; + + /* Update transforms */ + float cell_dim[3], half_cell_dim[3]; + cell_dim[0] = 2.0f / egrid->resolution[0]; + cell_dim[1] = 2.0f / egrid->resolution[1]; + cell_dim[2] = 2.0f / egrid->resolution[2]; + + mul_v3_v3fl(half_cell_dim, cell_dim, 0.5f); + + /* Matrix converting world space to cell ranges. */ + invert_m4_m4(egrid->mat, ob->obmat); + + /* First cell. */ + copy_v3_fl(egrid->corner, -1.0f); + add_v3_v3(egrid->corner, half_cell_dim); + mul_m4_v3(ob->obmat, egrid->corner); + + /* Opposite neighbor cell. */ + copy_v3_fl3(egrid->increment_x, cell_dim[0], 0.0f, 0.0f); + add_v3_v3(egrid->increment_x, half_cell_dim); + add_v3_fl(egrid->increment_x, -1.0f); + mul_m4_v3(ob->obmat, egrid->increment_x); + sub_v3_v3(egrid->increment_x, egrid->corner); + + copy_v3_fl3(egrid->increment_y, 0.0f, cell_dim[1], 0.0f); + add_v3_v3(egrid->increment_y, half_cell_dim); + add_v3_fl(egrid->increment_y, -1.0f); + mul_m4_v3(ob->obmat, egrid->increment_y); + sub_v3_v3(egrid->increment_y, egrid->corner); + + copy_v3_fl3(egrid->increment_z, 0.0f, 0.0f, cell_dim[2]); + add_v3_v3(egrid->increment_z, half_cell_dim); + add_v3_fl(egrid->increment_z, -1.0f); + mul_m4_v3(ob->obmat, egrid->increment_z); + sub_v3_v3(egrid->increment_z, egrid->corner); + + /* Visibility bias */ + egrid->visibility_bias = 0.05f * probe->vis_bias; + egrid->visibility_bleed = probe->vis_bleedbias; + egrid->visibility_range = 1.0f + sqrtf(max_fff(len_squared_v3(egrid->increment_x), + len_squared_v3(egrid->increment_y), + len_squared_v3(egrid->increment_z))); +} + +void EEVEE_lightprobes_cube_data_from_object(Object *ob, EEVEE_LightProbe *eprobe) +{ + LightProbe *probe = (LightProbe *)ob->data; + + /* Update transforms */ + copy_v3_v3(eprobe->position, ob->obmat[3]); + + /* Attenuation */ + eprobe->attenuation_type = probe->attenuation_type; + eprobe->attenuation_fac = 1.0f / max_ff(1e-8f, probe->falloff); + + unit_m4(eprobe->attenuationmat); + scale_m4_fl(eprobe->attenuationmat, probe->distinf); + mul_m4_m4m4(eprobe->attenuationmat, ob->obmat, eprobe->attenuationmat); + invert_m4(eprobe->attenuationmat); + + /* Parallax */ + unit_m4(eprobe->parallaxmat); + + if ((probe->flag & LIGHTPROBE_FLAG_CUSTOM_PARALLAX) != 0) { + eprobe->parallax_type = probe->parallax_type; + scale_m4_fl(eprobe->parallaxmat, probe->distpar); + } + else { + eprobe->parallax_type = probe->attenuation_type; + scale_m4_fl(eprobe->parallaxmat, probe->distinf); + } + + mul_m4_m4m4(eprobe->parallaxmat, ob->obmat, eprobe->parallaxmat); + invert_m4(eprobe->parallaxmat); +} + +void EEVEE_lightprobes_planar_data_from_object(Object *ob, EEVEE_PlanarReflection *eplanar, EEVEE_LightProbeVisTest *vis_test) +{ + LightProbe *probe = (LightProbe *)ob->data; + float normat[4][4], imat[4][4]; + + vis_test->collection = probe->visibility_grp; + vis_test->invert = probe->flag & LIGHTPROBE_FLAG_INVERT_GROUP; + vis_test->cached = false; + + /* Computing mtx : matrix that mirror position around object's XY plane. */ + normalize_m4_m4(normat, ob->obmat); /* object > world */ + invert_m4_m4(imat, normat); /* world > object */ + /* XY reflection plane */ + imat[0][2] = -imat[0][2]; + imat[1][2] = -imat[1][2]; + imat[2][2] = -imat[2][2]; + imat[3][2] = -imat[3][2]; /* world > object > mirrored obj */ + mul_m4_m4m4(eplanar->mtx, normat, imat); /* world > object > mirrored obj > world */ + + /* Compute clip plane equation / normal. */ + copy_v3_v3(eplanar->plane_equation, ob->obmat[2]); + normalize_v3(eplanar->plane_equation); /* plane normal */ + eplanar->plane_equation[3] = -dot_v3v3(eplanar->plane_equation, ob->obmat[3]); + eplanar->clipsta = probe->clipsta; + + /* Compute XY clip planes. */ + normalize_v3_v3(eplanar->clip_vec_x, ob->obmat[0]); + normalize_v3_v3(eplanar->clip_vec_y, ob->obmat[1]); + + float vec[3] = {0.0f, 0.0f, 0.0f}; + vec[0] = 1.0f; vec[1] = 0.0f; vec[2] = 0.0f; + mul_m4_v3(ob->obmat, vec); /* Point on the edge */ + eplanar->clip_edge_x_pos = dot_v3v3(eplanar->clip_vec_x, vec); + + vec[0] = 0.0f; vec[1] = 1.0f; vec[2] = 0.0f; + mul_m4_v3(ob->obmat, vec); /* Point on the edge */ + eplanar->clip_edge_y_pos = dot_v3v3(eplanar->clip_vec_y, vec); + + vec[0] = -1.0f; vec[1] = 0.0f; vec[2] = 0.0f; + mul_m4_v3(ob->obmat, vec); /* Point on the edge */ + eplanar->clip_edge_x_neg = dot_v3v3(eplanar->clip_vec_x, vec); + + vec[0] = 0.0f; vec[1] = -1.0f; vec[2] = 0.0f; + mul_m4_v3(ob->obmat, vec); /* Point on the edge */ + eplanar->clip_edge_y_neg = dot_v3v3(eplanar->clip_vec_y, vec); + + /* Facing factors */ + float max_angle = max_ff(1e-2f, 1.0f - probe->falloff) * M_PI * 0.5f; + float min_angle = 0.0f; + eplanar->facing_scale = 1.0f / max_ff(1e-8f, cosf(min_angle) - cosf(max_angle)); + eplanar->facing_bias = -min_ff(1.0f - 1e-8f, cosf(max_angle)) * eplanar->facing_scale; + + /* Distance factors */ + float max_dist = probe->distinf; + float min_dist = min_ff(1.0f - 1e-8f, 1.0f - probe->falloff) * probe->distinf; + eplanar->attenuation_scale = -1.0f / max_ff(1e-8f, max_dist - min_dist); + eplanar->attenuation_bias = max_dist * -eplanar->attenuation_scale; +} + +static void lightbake_planar_compute_render_matrices( + EEVEE_PlanarReflection *eplanar, DRWMatrixState *r_matstate, const float viewmat[4][4]) +{ + /* Reflect Camera Matrix. */ + mul_m4_m4m4(r_matstate->viewmat, viewmat, eplanar->mtx); + /* TODO FOV margin */ + /* Temporal sampling jitter should be already applied to the DRW_MAT_WIN. */ + DRW_viewport_matrix_get(r_matstate->winmat, DRW_MAT_WIN); + /* Apply Projection Matrix. */ + mul_m4_m4m4(r_matstate->persmat, r_matstate->winmat, r_matstate->viewmat); + + /* This is the matrix used to reconstruct texture coordinates. + * We use the original view matrix because it does not create + * visual artifacts if receiver is not perfectly aligned with + * the planar reflection probe. */ + mul_m4_m4m4(eplanar->reflectionmat, r_matstate->winmat, viewmat); /* TODO FOV margin */ + /* Convert from [-1, 1] to [0, 1] (NDC to Texture coord). */ + mul_m4_m4m4(eplanar->reflectionmat, texcomat, eplanar->reflectionmat); +} + +static void eevee_lightprobes_extract_from_cache(EEVEE_LightProbesInfo *pinfo, LightCache *lcache) +{ + /* copy the entire cache for now (up to MAX_PROBE) */ + /* TODO Frutum cull to only add visible probes. */ + memcpy(pinfo->probe_data, lcache->cube_data, sizeof(EEVEE_LightProbe) * max_ii(1, min_ii(lcache->cube_len, MAX_PROBE))); + /* TODO compute the max number of grid based on sample count. */ + memcpy(pinfo->grid_data, lcache->grid_data, sizeof(EEVEE_LightGrid) * max_ii(1, min_ii(lcache->grid_len, MAX_GRID))); +} + +void EEVEE_lightprobes_cache_finish(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = vedata->stl; + LightCache *light_cache = stl->g_data->light_cache; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + eevee_lightprobes_extract_from_cache(sldata->probes, light_cache); + + DRW_uniformbuffer_update(sldata->probe_ubo, &sldata->probes->probe_data); + DRW_uniformbuffer_update(sldata->grid_ubo, &sldata->probes->grid_data); + + /* For shading, save max level of the octahedron map */ + sldata->common_data.prb_lod_cube_max = (float)light_cache->mips_len - 1.0f; + sldata->common_data.prb_lod_planar_max = (float)MAX_PLANAR_LOD_LEVEL; + sldata->common_data.prb_irradiance_vis_size = light_cache->vis_res; + sldata->common_data.prb_irradiance_smooth = SQUARE(scene_eval->eevee.gi_irradiance_smoothing); + sldata->common_data.prb_num_render_cube = max_ii(1, light_cache->cube_len); + sldata->common_data.prb_num_render_grid = max_ii(1, light_cache->grid_len); + sldata->common_data.prb_num_planar = pinfo->num_planar; + + if (pinfo->num_planar != pinfo->cache_num_planar) { + DRW_TEXTURE_FREE_SAFE(vedata->txl->planar_pool); + DRW_TEXTURE_FREE_SAFE(vedata->txl->planar_depth); + pinfo->cache_num_planar = pinfo->num_planar; + } + planar_pool_ensure_alloc(vedata, pinfo->num_planar); + + /* If lightcache auto-update is enable we tag the relevant part + * of the cache to update and fire up a baking job. */ + if (!DRW_state_is_image_render() && !DRW_state_is_opengl_render() && + (pinfo->do_grid_update || pinfo->do_cube_update)) + { + BLI_assert(draw_ctx->evil_C); + + if (draw_ctx->scene->eevee.flag & SCE_EEVEE_GI_AUTOBAKE) { + Scene *scene_orig = DEG_get_input_scene(draw_ctx->depsgraph); + if (scene_orig->eevee.light_cache != NULL) { + if (pinfo->do_grid_update) { + scene_orig->eevee.light_cache->flag |= LIGHTCACHE_UPDATE_GRID; + } + /* If we update grid we need to update the cubemaps too. + * So always refresh cubemaps. */ + scene_orig->eevee.light_cache->flag |= LIGHTCACHE_UPDATE_CUBE; + /* Tag the lightcache to auto update. */ + scene_orig->eevee.light_cache->flag |= LIGHTCACHE_UPDATE_AUTO; + /* Use a notifier to trigger the operator after drawing. */ + WM_event_add_notifier(draw_ctx->evil_C, NC_LIGHTPROBE, scene_orig); + } + } + } +} + +/* -------------------------------------------------------------------- */ + +/** \name Rendering + * \{ */ + +typedef struct EEVEE_BakeRenderData { + EEVEE_Data *vedata; + EEVEE_ViewLayerData *sldata; + struct GPUFrameBuffer **face_fb; /* should contain 6 framebuffer */ +} EEVEE_BakeRenderData; + +static void render_cubemap( + void (*callback)(int face, EEVEE_BakeRenderData *user_data), EEVEE_BakeRenderData *user_data, + const float pos[3], float clipsta, float clipend) +{ + DRWMatrixState matstate; + + /* Move to capture position */ + float posmat[4][4]; + unit_m4(posmat); + negate_v3_v3(posmat[3], pos); + + perspective_m4(matstate.winmat, -clipsta, clipsta, -clipsta, clipsta, clipsta, clipend); + invert_m4_m4(matstate.wininv, matstate.winmat); + + /* 1 - Render to each cubeface individually. + * We do this instead of using geometry shader because a) it's faster, + * b) it's easier than fixing the nodetree shaders (for view dependent effects). */ + for (int i = 0; i < 6; ++i) { + /* Setup custom matrices */ + mul_m4_m4m4(matstate.viewmat, cubefacemat[i], posmat); + mul_m4_m4m4(matstate.persmat, matstate.winmat, matstate.viewmat); + invert_m4_m4(matstate.persinv, matstate.persmat); + invert_m4_m4(matstate.viewinv, matstate.viewmat); + invert_m4_m4(matstate.wininv, matstate.winmat); + + DRW_viewport_matrix_override_set_all(&matstate); + + callback(i, user_data); + } +} + +static void render_reflections( + void (*callback)(int face, EEVEE_BakeRenderData *user_data), EEVEE_BakeRenderData *user_data, + EEVEE_PlanarReflection *planar_data, int ref_count) +{ + DRWMatrixState matstate; + + float original_viewmat[4][4]; + DRW_viewport_matrix_get(original_viewmat, DRW_MAT_VIEW); + + for (int i = 0; i < ref_count; ++i) { + /* Setup custom matrices */ + lightbake_planar_compute_render_matrices(planar_data + i, &matstate, original_viewmat); + invert_m4_m4(matstate.persinv, matstate.persmat); + invert_m4_m4(matstate.viewinv, matstate.viewmat); + invert_m4_m4(matstate.wininv, matstate.winmat); + DRW_viewport_matrix_override_set_all(&matstate); + + callback(i, user_data); + } +} + +static void lightbake_render_world_face(int face, EEVEE_BakeRenderData *user_data) +{ + EEVEE_PassList *psl = user_data->vedata->psl; + struct GPUFrameBuffer **face_fb = user_data->face_fb; + + /* For world probe, we don't need to clear the color buffer + * since we render the background directly. */ + GPU_framebuffer_bind(face_fb[face]); + GPU_framebuffer_clear_depth(face_fb[face], 1.0f); + DRW_draw_pass(psl->probe_background); +} + +void EEVEE_lightbake_render_world(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata, struct GPUFrameBuffer *face_fb[6]) +{ + EEVEE_BakeRenderData brdata = { + .vedata = vedata, + .face_fb = face_fb + }; + + render_cubemap(lightbake_render_world_face, &brdata, (float[3]){0.0f}, 1.0f, 10.0f); +} + +static void lightbake_render_scene_face(int face, EEVEE_BakeRenderData *user_data) +{ + EEVEE_ViewLayerData *sldata = user_data->sldata; + EEVEE_PassList *psl = user_data->vedata->psl; + struct GPUFrameBuffer **face_fb = user_data->face_fb; + + /* Be sure that cascaded shadow maps are updated. */ + EEVEE_draw_shadows(sldata, user_data->vedata); + + GPU_framebuffer_bind(face_fb[face]); + GPU_framebuffer_clear_depth(face_fb[face], 1.0f); + + DRW_draw_pass(psl->depth_pass); + DRW_draw_pass(psl->depth_pass_cull); + DRW_draw_pass(psl->probe_background); + DRW_draw_pass(psl->material_pass); + DRW_draw_pass(psl->sss_pass); /* Only output standard pass */ + EEVEE_draw_default_passes(psl); +} + +/* Render the scene to the probe_rt texture. */ +void EEVEE_lightbake_render_scene( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUFrameBuffer *face_fb[6], + const float pos[3], float near_clip, float far_clip) +{ + EEVEE_BakeRenderData brdata = { + .vedata = vedata, + .sldata = sldata, + .face_fb = face_fb + }; + + render_cubemap(lightbake_render_scene_face, &brdata, pos, near_clip, far_clip); +} + +static void lightbake_render_scene_reflected(int layer, EEVEE_BakeRenderData *user_data) +{ + EEVEE_Data *vedata = user_data->vedata; + EEVEE_ViewLayerData *sldata = user_data->sldata; + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + EEVEE_PlanarReflection *eplanar = pinfo->planar_data + layer; + + GPU_framebuffer_ensure_config(&fbl->planarref_fb, { + GPU_ATTACHMENT_TEXTURE_LAYER(txl->planar_depth, layer), + GPU_ATTACHMENT_TEXTURE_LAYER(txl->planar_pool, layer) + }); + + /* Use visibility info for this planar reflection. */ + pinfo->vis_data = pinfo->planar_vis_tests[layer]; + + /* Avoid using the texture attached to framebuffer when rendering. */ + /* XXX */ + GPUTexture *tmp_planar_pool = txl->planar_pool; + GPUTexture *tmp_planar_depth = txl->planar_depth; + txl->planar_pool = e_data.planar_pool_placeholder; + txl->planar_depth = e_data.depth_array_placeholder; + + /* Be sure that cascaded shadow maps are updated. */ + DRW_stats_group_start("Planar Reflection"); + + /* Be sure that cascaded shadow maps are updated. */ + EEVEE_draw_shadows(sldata, vedata); + /* Since we are rendering with an inverted view matrix, we need + * to invert the facing for backface culling to be the same. */ + DRW_state_invert_facing(); + /* Compute offset plane equation (fix missing texels near reflection plane). */ + copy_v4_v4(sldata->clip_data.clip_planes[0], eplanar->plane_equation); + sldata->clip_data.clip_planes[0][3] += eplanar->clipsta; + /* Set clipping plane */ + DRW_uniformbuffer_update(sldata->clip_ubo, &sldata->clip_data); + DRW_state_clip_planes_count_set(1); + + GPU_framebuffer_bind(fbl->planarref_fb); + GPU_framebuffer_clear_depth(fbl->planarref_fb, 1.0); + + /* Slight modification: we handle refraction as normal + * shading and don't do SSRefraction. */ + + DRW_draw_pass(psl->depth_pass_clip); + DRW_draw_pass(psl->depth_pass_clip_cull); + DRW_draw_pass(psl->refract_depth_pass); + DRW_draw_pass(psl->refract_depth_pass_cull); + + DRW_draw_pass(psl->probe_background); + EEVEE_create_minmax_buffer(vedata, tmp_planar_depth, layer); + EEVEE_occlusion_compute(sldata, vedata, tmp_planar_depth, layer); + + GPU_framebuffer_bind(fbl->planarref_fb); + + /* Shading pass */ + EEVEE_draw_default_passes(psl); + DRW_draw_pass(psl->material_pass); + DRW_draw_pass(psl->sss_pass); /* Only output standard pass */ + DRW_draw_pass(psl->refract_pass); + + /* Transparent */ + if (DRW_state_is_image_render()) { + /* Do the reordering only for offline because it can be costly. */ + DRW_pass_sort_shgroup_z(psl->transparent_pass); + } + DRW_draw_pass(psl->transparent_pass); + + DRW_state_invert_facing(); + DRW_state_clip_planes_reset(); + + DRW_stats_group_end(); + + /* Restore */ + txl->planar_pool = tmp_planar_pool; + txl->planar_depth = tmp_planar_depth; +} + +static void eevee_lightbake_render_scene_to_planars( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_BakeRenderData brdata = { + .vedata = vedata, + .sldata = sldata, + }; + + render_reflections(lightbake_render_scene_reflected, &brdata, sldata->probes->planar_data, sldata->probes->num_planar); +} +/** \} */ + +/* -------------------------------------------------------------------- */ + +/** \name Filtering + * \{ */ + +/* Glossy filter rt_color to light_cache->cube_tx.tex at index probe_idx */ +void EEVEE_lightbake_filter_glossy( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + struct GPUTexture *rt_color, struct GPUFrameBuffer *fb, + int probe_idx, float intensity, int maxlevel, float filter_quality, float firefly_fac) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + LightCache *light_cache = vedata->stl->g_data->light_cache; + + float target_size = (float)GPU_texture_width(rt_color); + + /* Max lod used from the render target probe */ + pinfo->lod_rt_max = floorf(log2f(target_size)) - 2.0f; + pinfo->intensity_fac = intensity; + + /* Start fresh */ + GPU_framebuffer_ensure_config(&fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE + }); + + /* 2 - Let gpu create Mipmaps for Filtered Importance Sampling. */ + /* Bind next framebuffer to be able to gen. mips for probe_rt. */ + EEVEE_downsample_cube_buffer(vedata, rt_color, (int)(pinfo->lod_rt_max)); + + /* 3 - Render to probe array to the specified layer, do prefiltering. */ + int mipsize = GPU_texture_width(light_cache->cube_tx.tex); + for (int i = 0; i < maxlevel + 1; i++) { + float bias = (i == 0) ? -1.0f : 1.0f; + pinfo->texel_size = 1.0f / (float)mipsize; + pinfo->padding_size = (i == maxlevel) ? 0 : (float)(1 << (maxlevel - i - 1)); + pinfo->padding_size *= pinfo->texel_size; + pinfo->layer = probe_idx; + pinfo->roughness = i / (float)maxlevel; + pinfo->roughness *= pinfo->roughness; /* Disney Roughness */ + pinfo->roughness *= pinfo->roughness; /* Distribute Roughness accros lod more evenly */ + CLAMP(pinfo->roughness, 1e-8f, 0.99999f); /* Avoid artifacts */ + +#if 1 /* Variable Sample count (fast) */ + switch (i) { + case 0: pinfo->samples_len = 1.0f; break; + case 1: pinfo->samples_len = 16.0f; break; + case 2: pinfo->samples_len = 32.0f; break; + case 3: pinfo->samples_len = 64.0f; break; + default: pinfo->samples_len = 128.0f; break; + } +#else /* Constant Sample count (slow) */ + pinfo->samples_len = 1024.0f; +#endif + /* Cannot go higher than HAMMERSLEY_SIZE */ + CLAMP(filter_quality, 1.0f, 8.0f); + pinfo->samples_len *= filter_quality; + + pinfo->samples_len_inv = 1.0f / pinfo->samples_len; + pinfo->lodfactor = bias + 0.5f * log((float)(target_size * target_size) * pinfo->samples_len_inv) / log(2); + pinfo->firefly_fac = (firefly_fac > 0.0) ? firefly_fac : 1e16; + + GPU_framebuffer_ensure_config(&fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE_MIP(light_cache->cube_tx.tex, i) + }); + GPU_framebuffer_bind(fb); + GPU_framebuffer_viewport_set(fb, 0, 0, mipsize, mipsize); + DRW_draw_pass(psl->probe_glossy_compute); + + mipsize /= 2; + CLAMP_MIN(mipsize, 1); + } +} + +/* Diffuse filter rt_color to light_cache->grid_tx.tex at index grid_offset */ +void EEVEE_lightbake_filter_diffuse( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + struct GPUTexture *rt_color, struct GPUFrameBuffer *fb, + int grid_offset, float intensity) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + LightCache *light_cache = vedata->stl->g_data->light_cache; + + float target_size = (float)GPU_texture_width(rt_color); + + pinfo->intensity_fac = intensity; + + /* find cell position on the virtual 3D texture */ + /* NOTE : Keep in sync with load_irradiance_cell() */ +#if defined(IRRADIANCE_SH_L2) + int size[2] = {3, 3}; +#elif defined(IRRADIANCE_CUBEMAP) + int size[2] = {8, 8}; + pinfo->samples_len = 1024.0f; +#elif defined(IRRADIANCE_HL2) + int size[2] = {3, 2}; + pinfo->samples_len = 1024.0f; +#endif + + int cell_per_row = GPU_texture_width(light_cache->grid_tx.tex) / size[0]; + int x = size[0] * (grid_offset % cell_per_row); + int y = size[1] * (grid_offset / cell_per_row); + +#ifndef IRRADIANCE_SH_L2 + /* Tweaking parameters to balance perf. vs precision */ + const float bias = 0.0f; + pinfo->samples_len_inv = 1.0f / pinfo->samples_len; + pinfo->lodfactor = bias + 0.5f * log((float)(target_size * target_size) * pinfo->samples_len_inv) / log(2); + pinfo->lod_rt_max = floorf(log2f(target_size)) - 2.0f; +#else + pinfo->shres = 32; /* Less texture fetches & reduce branches */ + pinfo->lod_rt_max = 2.0f; /* Improve cache reuse */ +#endif + + /* Start fresh */ + GPU_framebuffer_ensure_config(&fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE + }); + + /* 4 - Compute diffuse irradiance */ + EEVEE_downsample_cube_buffer(vedata, rt_color, (int)(pinfo->lod_rt_max)); + + GPU_framebuffer_ensure_config(&fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE_LAYER(light_cache->grid_tx.tex, 0) + }); + GPU_framebuffer_bind(fb); + GPU_framebuffer_viewport_set(fb, x, y, size[0], size[1]); + DRW_draw_pass(psl->probe_diffuse_compute); +} + +/* Filter rt_depth to light_cache->grid_tx.tex at index grid_offset */ +void EEVEE_lightbake_filter_visibility( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + struct GPUTexture *UNUSED(rt_depth), struct GPUFrameBuffer *fb, + int grid_offset, float clipsta, float clipend, + float vis_range, float vis_blur, int vis_size) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + LightCache *light_cache = vedata->stl->g_data->light_cache; + + pinfo->samples_len = 512.0f; /* TODO refine */ + pinfo->samples_len_inv = 1.0f / pinfo->samples_len; + pinfo->shres = vis_size; + pinfo->visibility_range = vis_range; + pinfo->visibility_blur = vis_blur; + pinfo->near_clip = -clipsta; + pinfo->far_clip = -clipend; + pinfo->texel_size = 1.0f / (float)vis_size; + + int cell_per_col = GPU_texture_height(light_cache->grid_tx.tex) / vis_size; + int cell_per_row = GPU_texture_width(light_cache->grid_tx.tex) / vis_size; + int x = vis_size * (grid_offset % cell_per_row); + int y = vis_size * ((grid_offset / cell_per_row) % cell_per_col); + int layer = 1 + ((grid_offset / cell_per_row) / cell_per_col); + + GPU_framebuffer_ensure_config(&fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE_LAYER(light_cache->grid_tx.tex, layer) + }); + GPU_framebuffer_bind(fb); + GPU_framebuffer_viewport_set(fb, x, y, vis_size, vis_size); + DRW_draw_pass(psl->probe_visibility_compute); +} + +/* Actually a simple downsampling */ +static void downsample_planar(void *vedata, int level) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + + const float *size = DRW_viewport_size_get(); + copy_v2_v2(stl->g_data->planar_texel_size, size); + for (int i = 0; i < level - 1; ++i) { + stl->g_data->planar_texel_size[0] /= 2.0f; + stl->g_data->planar_texel_size[1] /= 2.0f; + min_ff(floorf(stl->g_data->planar_texel_size[0]), 1.0f); + min_ff(floorf(stl->g_data->planar_texel_size[1]), 1.0f); + } + invert_v2(stl->g_data->planar_texel_size); + + DRW_draw_pass(psl->probe_planar_downsample_ps); +} + +static void EEVEE_lightbake_filter_planar(EEVEE_Data *vedata) +{ + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + + DRW_stats_group_start("Planar Probe Downsample"); + + GPU_framebuffer_ensure_config(&fbl->planar_downsample_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->planar_pool) + }); + + GPU_framebuffer_recursive_downsample(fbl->planar_downsample_fb, MAX_PLANAR_LOD_LEVEL, &downsample_planar, vedata); + DRW_stats_group_end(); +} + +/** \} */ + +void EEVEE_lightprobes_refresh_planar(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_LightProbesInfo *pinfo = sldata->probes; + DRWMatrixState saved_mats; + + if (pinfo->num_planar == 0) { + /* Disable SSR if we cannot read previous frame */ + common_data->ssr_toggle = vedata->stl->g_data->valid_double_buffer; + common_data->prb_num_planar = 0; + return; + } + + /* We need to save the Matrices before overidding them */ + DRW_viewport_matrix_get_all(&saved_mats); + + /* Temporary Remove all planar reflections (avoid lag effect). */ + common_data->prb_num_planar = 0; + /* Turn off ssr to avoid black specular */ + common_data->ssr_toggle = false; + common_data->sss_toggle = false; + + common_data->ray_type = EEVEE_RAY_GLOSSY; + common_data->ray_depth = 1.0f; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + + /* Rendering happens here! */ + eevee_lightbake_render_scene_to_planars(sldata, vedata); + + /* Make sure no aditionnal visibility check runs after this. */ + pinfo->vis_data.collection = NULL; + + DRW_uniformbuffer_update(sldata->planar_ubo, &sldata->probes->planar_data); + + /* Restore */ + common_data->prb_num_planar = pinfo->num_planar; + common_data->ssr_toggle = true; + common_data->sss_toggle = true; + + /* Prefilter for SSR */ + if ((vedata->stl->effects->enabled_effects & EFFECT_SSR) != 0) { + EEVEE_lightbake_filter_planar(vedata); + } + + DRW_viewport_matrix_override_set_all(&saved_mats); + + if (DRW_state_is_image_render()) { + /* Sort transparents because planar reflections could have re-sorted them. */ + DRW_pass_sort_shgroup_z(vedata->psl->transparent_pass); + } + + /* Disable SSR if we cannot read previous frame */ + common_data->ssr_toggle = vedata->stl->g_data->valid_double_buffer; +} + +void EEVEE_lightprobes_refresh(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + LightCache *light_cache = vedata->stl->g_data->light_cache; + + if (light_cache->flag & LIGHTCACHE_UPDATE_WORLD) { + DRWMatrixState saved_mats; + DRW_viewport_matrix_get_all(&saved_mats); + EEVEE_lightbake_update_world_quick(sldata, vedata, scene_eval); + DRW_viewport_matrix_override_set_all(&saved_mats); + } +} + +void EEVEE_lightprobes_free(void) +{ + MEM_SAFE_FREE(e_data.format_probe_display_cube); + MEM_SAFE_FREE(e_data.format_probe_display_planar); + DRW_TEXTURE_FREE_SAFE(e_data.hammersley); + DRW_TEXTURE_FREE_SAFE(e_data.planar_pool_placeholder); + DRW_TEXTURE_FREE_SAFE(e_data.depth_placeholder); + DRW_TEXTURE_FREE_SAFE(e_data.depth_array_placeholder); +} diff --git a/source/blender/draw/engines/eevee/eevee_lights.c b/source/blender/draw/engines/eevee/eevee_lights.c new file mode 100644 index 00000000000..b946a49ea14 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_lights.c @@ -0,0 +1,1486 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_lights.c + * \ingroup DNA + */ + +#include "DRW_render.h" + +#include "BLI_dynstr.h" +#include "BLI_rand.h" +#include "BLI_rect.h" + +#include "BKE_object.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_engine.h" +#include "eevee_private.h" + +#define SHADOW_CASTER_ALLOC_CHUNK 16 + +// #define DEBUG_CSM +// #define DEBUG_SHADOW_DISTRIBUTION + +static struct { + struct GPUShader *shadow_sh; + struct GPUShader *shadow_store_cube_sh[SHADOW_METHOD_MAX]; + struct GPUShader *shadow_store_cube_high_sh[SHADOW_METHOD_MAX]; + struct GPUShader *shadow_store_cascade_sh[SHADOW_METHOD_MAX]; + struct GPUShader *shadow_store_cascade_high_sh[SHADOW_METHOD_MAX]; + struct GPUShader *shadow_copy_cube_sh[SHADOW_METHOD_MAX]; + struct GPUShader *shadow_copy_cascade_sh[SHADOW_METHOD_MAX]; +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_shadow_vert_glsl[]; +extern char datatoc_shadow_frag_glsl[]; +extern char datatoc_shadow_store_frag_glsl[]; +extern char datatoc_shadow_copy_frag_glsl[]; +extern char datatoc_concentric_samples_lib_glsl[]; + +/* Prototypes */ +static void eevee_light_setup(Object *ob, EEVEE_Light *evli); +static float light_attenuation_radius_get(Lamp *la, float light_threshold); + +/* *********** LIGHT BITS *********** */ +static void lightbits_set_single(EEVEE_LightBits *bitf, uint idx, bool val) +{ + if (val) { + bitf->fields[idx / 8] |= (1 << (idx % 8)); + } + else { + bitf->fields[idx / 8] &= ~(1 << (idx % 8)); + } +} + +static void lightbits_set_all(EEVEE_LightBits *bitf, bool val) +{ + memset(bitf, (val) ? 0xFF : 0x00, sizeof(EEVEE_LightBits)); +} + +static void lightbits_or(EEVEE_LightBits *r, const EEVEE_LightBits *v) +{ + for (int i = 0; i < MAX_LIGHTBITS_FIELDS; ++i) { + r->fields[i] |= v->fields[i]; + } +} + +static bool lightbits_get(const EEVEE_LightBits *r, uint idx) +{ + return r->fields[idx / 8] & (1 << (idx % 8)); +} + +static void lightbits_convert( + EEVEE_LightBits *r, const EEVEE_LightBits *bitf, const int *light_bit_conv_table, uint table_length) +{ + for (int i = 0; i < table_length; ++i) { + if (lightbits_get(bitf, i) != 0) { + if (light_bit_conv_table[i] >= 0) { + r->fields[i / 8] |= (1 << (i % 8)); + } + } + } +} + +/* *********** FUNCTIONS *********** */ + +void EEVEE_lights_init(EEVEE_ViewLayerData *sldata) +{ + const uint shadow_ubo_size = sizeof(EEVEE_Shadow) * MAX_SHADOW + + sizeof(EEVEE_ShadowCube) * MAX_SHADOW_CUBE + + sizeof(EEVEE_ShadowCascade) * MAX_SHADOW_CASCADE; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (!e_data.shadow_sh) { + e_data.shadow_sh = DRW_shader_create( + datatoc_shadow_vert_glsl, NULL, datatoc_shadow_frag_glsl, NULL); + } + + if (!sldata->lamps) { + sldata->lamps = MEM_callocN(sizeof(EEVEE_LampsInfo), "EEVEE_LampsInfo"); + sldata->light_ubo = DRW_uniformbuffer_create(sizeof(EEVEE_Light) * MAX_LIGHT, NULL); + sldata->shadow_ubo = DRW_uniformbuffer_create(shadow_ubo_size, NULL); + sldata->shadow_render_ubo = DRW_uniformbuffer_create(sizeof(EEVEE_ShadowRender), NULL); + + for (int i = 0; i < 2; ++i) { + sldata->shcasters_buffers[i].shadow_casters = MEM_callocN(sizeof(EEVEE_ShadowCaster) * SHADOW_CASTER_ALLOC_CHUNK, "EEVEE_ShadowCaster buf"); + sldata->shcasters_buffers[i].flags = MEM_callocN(sizeof(sldata->shcasters_buffers[0].flags) * SHADOW_CASTER_ALLOC_CHUNK, "EEVEE_shcast_buffer flags buf"); + sldata->shcasters_buffers[i].alloc_count = SHADOW_CASTER_ALLOC_CHUNK; + sldata->shcasters_buffers[i].count = 0; + } + + sldata->lamps->shcaster_frontbuffer = &sldata->shcasters_buffers[0]; + sldata->lamps->shcaster_backbuffer = &sldata->shcasters_buffers[1]; + } + + /* Flip buffers */ + SWAP(EEVEE_ShadowCasterBuffer *, sldata->lamps->shcaster_frontbuffer, sldata->lamps->shcaster_backbuffer); + + const int sh_method = scene_eval->eevee.shadow_method; + int sh_cube_size = scene_eval->eevee.shadow_cube_size; + int sh_cascade_size = scene_eval->eevee.shadow_cascade_size; + const bool sh_high_bitdepth = (scene_eval->eevee.flag & SCE_EEVEE_SHADOW_HIGH_BITDEPTH) != 0; + sldata->lamps->soft_shadows = (scene_eval->eevee.flag & SCE_EEVEE_SHADOW_SOFT) != 0; + + EEVEE_LampsInfo *linfo = sldata->lamps; + if ((linfo->shadow_cube_size != sh_cube_size) || + (linfo->shadow_method != sh_method) || + (linfo->shadow_high_bitdepth != sh_high_bitdepth)) + { + BLI_assert((sh_cube_size > 0) && (sh_cube_size <= 4096)); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_pool); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_target); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_blur); + + /* Compute adequate size for the octahedral map. */ + linfo->shadow_cube_store_size = OCTAHEDRAL_SIZE_FROM_CUBESIZE(sh_cube_size); + + CLAMP(linfo->shadow_cube_store_size, 1, 4096); + CLAMP(sh_cube_size, 1, 4096); + + linfo->shadow_render_data.cube_texel_size = 1.0f / sh_cube_size; + } + + if ((linfo->shadow_cascade_size != sh_cascade_size) || + (linfo->shadow_method != sh_method) || + (linfo->shadow_high_bitdepth != sh_high_bitdepth)) + { + BLI_assert((sh_cascade_size > 0) && (sh_cascade_size <= 4096)); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_pool); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_target); + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_blur); + + CLAMP(sh_cascade_size, 1, 4096); + } + + linfo->shadow_high_bitdepth = sh_high_bitdepth; + linfo->shadow_method = sh_method; + linfo->shadow_cube_size = sh_cube_size; + linfo->shadow_cascade_size = sh_cascade_size; + + /* only compile the ones needed. reduce startup time. */ + if ((sh_method == SHADOW_ESM) && !e_data.shadow_copy_cube_sh[SHADOW_ESM]) { + e_data.shadow_copy_cube_sh[SHADOW_ESM] = DRW_shader_create_fullscreen( + datatoc_shadow_copy_frag_glsl, + "#define ESM\n" + "#define COPY\n"); + e_data.shadow_copy_cascade_sh[SHADOW_ESM] = DRW_shader_create_fullscreen( + datatoc_shadow_copy_frag_glsl, + "#define ESM\n" + "#define COPY\n" + "#define CSM\n"); + } + else if ((sh_method == SHADOW_VSM) && !e_data.shadow_copy_cube_sh[SHADOW_VSM]) { + e_data.shadow_copy_cube_sh[SHADOW_VSM] = DRW_shader_create_fullscreen( + datatoc_shadow_copy_frag_glsl, + "#define VSM\n" + "#define COPY\n"); + e_data.shadow_copy_cascade_sh[SHADOW_VSM] = DRW_shader_create_fullscreen( + datatoc_shadow_copy_frag_glsl, + "#define VSM\n" + "#define COPY\n" + "#define CSM\n"); + } +} + +static GPUShader *eevee_lights_get_store_sh(int shadow_method, bool high_blur, bool cascade) +{ + GPUShader **shader; + + if (cascade) { + shader = (high_blur) ? &e_data.shadow_store_cascade_high_sh[shadow_method] + : &e_data.shadow_store_cascade_sh[shadow_method]; + } + else { + shader = (high_blur) ? &e_data.shadow_store_cube_high_sh[shadow_method] + : &e_data.shadow_store_cube_sh[shadow_method]; + } + + if (*shader == NULL) { + DynStr *ds_frag = BLI_dynstr_new(); + BLI_dynstr_append(ds_frag, datatoc_concentric_samples_lib_glsl); + BLI_dynstr_append(ds_frag, datatoc_shadow_store_frag_glsl); + char *store_shadow_shader_str = BLI_dynstr_get_cstring(ds_frag); + BLI_dynstr_free(ds_frag); + + ds_frag = BLI_dynstr_new(); + BLI_dynstr_append(ds_frag, (shadow_method == SHADOW_VSM) ? "#define VSM\n" : "#define ESM\n"); + if (high_blur) BLI_dynstr_append(ds_frag, "#define HIGH_BLUR\n"); + if (cascade) BLI_dynstr_append(ds_frag, "#define CSM\n"); + char *define_str = BLI_dynstr_get_cstring(ds_frag); + BLI_dynstr_free(ds_frag); + + *shader = DRW_shader_create_fullscreen( + store_shadow_shader_str, define_str); + + MEM_freeN(store_shadow_shader_str); + MEM_freeN(define_str); + } + + return *shader; +} + +static DRWPass *eevee_lights_cube_store_pass_get(EEVEE_PassList *psl, EEVEE_ViewLayerData *sldata, int shadow_method, int shadow_samples_len) +{ + bool high_blur = shadow_samples_len > 16; + DRWPass **pass = (high_blur) ? &psl->shadow_cube_store_pass : &psl->shadow_cube_store_high_pass; + if (*pass == NULL) { + EEVEE_LampsInfo *linfo = sldata->lamps; + *pass = DRW_pass_create("Shadow Cube Storage Pass", DRW_STATE_WRITE_COLOR); + GPUShader *shader = eevee_lights_get_store_sh(shadow_method, high_blur, false); + DRWShadingGroup *grp = DRW_shgroup_create(shader, *pass); + DRW_shgroup_uniform_texture_ref(grp, "shadowTexture", &sldata->shadow_cube_blur); + DRW_shgroup_uniform_block(grp, "shadow_render_block", sldata->shadow_render_ubo); + DRW_shgroup_uniform_float(grp, "shadowFilterSize", &linfo->filter_size, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + return *pass; +} + +static DRWPass *eevee_lights_cascade_store_pass_get(EEVEE_PassList *psl, EEVEE_ViewLayerData *sldata, int shadow_method, int shadow_samples_len) +{ + bool high_blur = shadow_samples_len > 16; + DRWPass **pass = (high_blur) ? &psl->shadow_cascade_store_pass : &psl->shadow_cascade_store_high_pass; + if (*pass == NULL) { + EEVEE_LampsInfo *linfo = sldata->lamps; + *pass = DRW_pass_create("Shadow Cascade Storage Pass", DRW_STATE_WRITE_COLOR); + GPUShader *shader = eevee_lights_get_store_sh(shadow_method, high_blur, true); + DRWShadingGroup *grp = DRW_shgroup_create(shader, *pass); + DRW_shgroup_uniform_texture_ref(grp, "shadowTexture", &sldata->shadow_cascade_blur); + DRW_shgroup_uniform_block(grp, "shadow_render_block", sldata->shadow_render_ubo); + DRW_shgroup_uniform_int(grp, "cascadeId", &linfo->current_shadow_cascade, 1); + DRW_shgroup_uniform_float(grp, "shadowFilterSize", &linfo->filter_size, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + return *pass; +} + +void EEVEE_lights_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_LampsInfo *linfo = sldata->lamps; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_PassList *psl = vedata->psl; + + linfo->shcaster_frontbuffer->count = 0; + linfo->num_light = 0; + linfo->num_cube_layer = 0; + linfo->num_cascade_layer = 0; + linfo->gpu_cube_len = linfo->gpu_cascade_len = linfo->gpu_shadow_len = 0; + linfo->cpu_cube_len = linfo->cpu_cascade_len = 0; + memset(linfo->light_ref, 0, sizeof(linfo->light_ref)); + memset(linfo->shadow_cube_ref, 0, sizeof(linfo->shadow_cube_ref)); + memset(linfo->shadow_cascade_ref, 0, sizeof(linfo->shadow_cascade_ref)); + memset(linfo->new_shadow_id, -1, sizeof(linfo->new_shadow_id)); + + /* Shadow Casters: Reset flags. */ + memset(linfo->shcaster_backbuffer->flags, (char)SHADOW_CASTER_PRUNED, linfo->shcaster_backbuffer->alloc_count); + memset(linfo->shcaster_frontbuffer->flags, 0x00, linfo->shcaster_frontbuffer->alloc_count); + + psl->shadow_cube_store_pass = NULL; + psl->shadow_cube_store_high_pass = NULL; + psl->shadow_cascade_store_pass = NULL; + psl->shadow_cascade_store_high_pass = NULL; + + { + psl->shadow_cube_copy_pass = DRW_pass_create("Shadow Copy Pass", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create( + e_data.shadow_copy_cube_sh[linfo->shadow_method], psl->shadow_cube_copy_pass); + DRW_shgroup_uniform_texture_ref(grp, "shadowTexture", &sldata->shadow_cube_target); + DRW_shgroup_uniform_block(grp, "shadow_render_block", sldata->shadow_render_ubo); + DRW_shgroup_uniform_float(grp, "shadowFilterSize", &linfo->filter_size, 1); + DRW_shgroup_uniform_int(grp, "faceId", &linfo->current_shadow_face, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + + { + psl->shadow_cascade_copy_pass = DRW_pass_create("Shadow Cascade Copy Pass", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create( + e_data.shadow_copy_cascade_sh[linfo->shadow_method], psl->shadow_cascade_copy_pass); + DRW_shgroup_uniform_texture_ref(grp, "shadowTexture", &sldata->shadow_cascade_target); + DRW_shgroup_uniform_block(grp, "shadow_render_block", sldata->shadow_render_ubo); + DRW_shgroup_uniform_float(grp, "shadowFilterSize", &linfo->filter_size, 1); + DRW_shgroup_uniform_int(grp, "cascadeId", &linfo->current_shadow_cascade, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + + { + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL; + psl->shadow_pass = DRW_pass_create("Shadow Pass", state); + + stl->g_data->shadow_shgrp = DRW_shgroup_create(e_data.shadow_sh, psl->shadow_pass); + } +} + +void EEVEE_lights_cache_add(EEVEE_ViewLayerData *sldata, Object *ob) +{ + EEVEE_LampsInfo *linfo = sldata->lamps; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const float threshold = draw_ctx->scene->eevee.light_threshold; + + /* Step 1 find all lamps in the scene and setup them */ + if (linfo->num_light >= MAX_LIGHT) { + printf("Too many lights in the scene !!!\n"); + } + else { + Lamp *la = (Lamp *)ob->data; + EEVEE_Light *evli = linfo->light_data + linfo->num_light; + eevee_light_setup(ob, evli); + + /* We do not support shadowmaps for dupli lamps. */ + if ((ob->base_flag & BASE_FROMDUPLI) != 0) { + linfo->num_light++; + return; + } + + EEVEE_LampEngineData *led = EEVEE_lamp_data_ensure(ob); + + /* Save previous shadow id. */ + int prev_cube_sh_id = led->prev_cube_shadow_id; + + /* Default light without shadows */ + led->data.ld.shadow_id = -1; + led->prev_cube_shadow_id = -1; + + if (la->mode & LA_SHADOW) { + if (la->type == LA_SUN) { + int cascade_nbr = la->cascade_count; + + if ((linfo->gpu_cascade_len + 1) <= MAX_SHADOW_CASCADE) { + /* Save Light object. */ + linfo->shadow_cascade_ref[linfo->cpu_cascade_len] = ob; + + /* Store indices. */ + EEVEE_ShadowCascadeData *data = &led->data.scad; + data->shadow_id = linfo->gpu_shadow_len; + data->cascade_id = linfo->gpu_cascade_len; + data->layer_id = linfo->num_cascade_layer; + + /* Increment indices. */ + linfo->gpu_shadow_len += 1; + linfo->gpu_cascade_len += 1; + linfo->num_cascade_layer += cascade_nbr; + + linfo->cpu_cascade_len += 1; + } + } + else if (la->type == LA_SPOT || la->type == LA_LOCAL || la->type == LA_AREA) { + if ((linfo->gpu_cube_len + 1) <= MAX_SHADOW_CUBE) { + /* Save Light object. */ + linfo->shadow_cube_ref[linfo->cpu_cube_len] = ob; + + /* For light update tracking. */ + if ((prev_cube_sh_id >= 0) && + (prev_cube_sh_id < linfo->shcaster_backbuffer->count)) + { + linfo->new_shadow_id[prev_cube_sh_id] = linfo->cpu_cube_len; + } + led->prev_cube_shadow_id = linfo->cpu_cube_len; + + /* Saving lamp bounds for later. */ + BLI_assert(linfo->cpu_cube_len >= 0 && linfo->cpu_cube_len < MAX_LIGHT); + copy_v3_v3(linfo->shadow_bounds[linfo->cpu_cube_len].center, ob->obmat[3]); + linfo->shadow_bounds[linfo->cpu_cube_len].radius = light_attenuation_radius_get(la, threshold); + + EEVEE_ShadowCubeData *data = &led->data.scd; + /* Store indices. */ + data->shadow_id = linfo->gpu_shadow_len; + data->cube_id = linfo->gpu_cube_len; + data->layer_id = linfo->num_cube_layer; + + /* Increment indices. */ + linfo->gpu_shadow_len += 1; + linfo->gpu_cube_len += 1; + linfo->num_cube_layer += 1; + + linfo->cpu_cube_len += 1; + } + } + } + + led->data.ld.light_id = linfo->num_light; + linfo->light_ref[linfo->num_light] = ob; + linfo->num_light++; + } +} + +/* Add a shadow caster to the shadowpasses */ +void EEVEE_lights_cache_shcaster_add( + EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_StorageList *stl, struct GPUBatch *geom, Object *ob) +{ + DRW_shgroup_call_object_add( + stl->g_data->shadow_shgrp, + geom, ob); +} + +void EEVEE_lights_cache_shcaster_material_add( + EEVEE_ViewLayerData *sldata, EEVEE_PassList *psl, struct GPUMaterial *gpumat, + struct GPUBatch *geom, struct Object *ob, float *alpha_threshold) +{ + /* TODO / PERF : reuse the same shading group for objects with the same material */ + DRWShadingGroup *grp = DRW_shgroup_material_create(gpumat, psl->shadow_pass); + + if (grp == NULL) return; + + /* Grrr needed for correctness but not 99% of the time not needed. + * TODO detect when needed? */ + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(grp, "shadow_block", sldata->shadow_ubo); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + if (alpha_threshold != NULL) + DRW_shgroup_uniform_float(grp, "alphaThreshold", alpha_threshold, 1); + + DRW_shgroup_call_object_add(grp, geom, ob); +} + +/* Make that object update shadow casting lamps inside its influence bounding box. */ +void EEVEE_lights_cache_shcaster_object_add(EEVEE_ViewLayerData *sldata, Object *ob) +{ + if ((ob->base_flag & BASE_FROMDUPLI) != 0) { + /* TODO: Special case for dupli objects because we cannot save the object pointer. */ + return; + } + + EEVEE_ObjectEngineData *oedata = EEVEE_object_data_ensure(ob); + EEVEE_LampsInfo *linfo = sldata->lamps; + EEVEE_ShadowCasterBuffer *backbuffer = linfo->shcaster_backbuffer; + EEVEE_ShadowCasterBuffer *frontbuffer = linfo->shcaster_frontbuffer; + int past_id = oedata->shadow_caster_id; + + /* Update flags in backbuffer. */ + if (past_id > -1 && past_id < backbuffer->count) { + backbuffer->flags[past_id] &= ~SHADOW_CASTER_PRUNED; + + if (oedata->need_update) { + backbuffer->flags[past_id] |= SHADOW_CASTER_UPDATED; + } + } + + /* Update id. */ + oedata->shadow_caster_id = frontbuffer->count++; + + /* Make sure shadow_casters is big enough. */ + if (oedata->shadow_caster_id >= frontbuffer->alloc_count) { + frontbuffer->alloc_count += SHADOW_CASTER_ALLOC_CHUNK; + frontbuffer->shadow_casters = MEM_reallocN(frontbuffer->shadow_casters, sizeof(EEVEE_ShadowCaster) * frontbuffer->alloc_count); + frontbuffer->flags = MEM_reallocN(frontbuffer->flags, sizeof(EEVEE_ShadowCaster) * frontbuffer->alloc_count); + } + + EEVEE_ShadowCaster *shcaster = frontbuffer->shadow_casters + oedata->shadow_caster_id; + + if (oedata->need_update) { + frontbuffer->flags[oedata->shadow_caster_id] = SHADOW_CASTER_UPDATED; + } + + /* Update World AABB in frontbuffer. */ + BoundBox *bb = BKE_object_boundbox_get(ob); + float min[3], max[3]; + INIT_MINMAX(min, max); + for (int i = 0; i < 8; ++i) { + float vec[3]; + copy_v3_v3(vec, bb->vec[i]); + mul_m4_v3(ob->obmat, vec); + minmax_v3v3_v3(min, max, vec); + } + + EEVEE_BoundBox *aabb = &shcaster->bbox; + add_v3_v3v3(aabb->center, min, max); + mul_v3_fl(aabb->center, 0.5f); + sub_v3_v3v3(aabb->halfdim, aabb->center, max); + + aabb->halfdim[0] = fabsf(aabb->halfdim[0]); + aabb->halfdim[1] = fabsf(aabb->halfdim[1]); + aabb->halfdim[2] = fabsf(aabb->halfdim[2]); + + oedata->need_update = false; +} + +void EEVEE_lights_cache_finish(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_LampsInfo *linfo = sldata->lamps; + GPUTextureFormat shadow_pool_format = GPU_R32F; + + sldata->common_data.la_num_light = linfo->num_light; + + /* Setup enough layers. */ + /* Free textures if number mismatch. */ + if (linfo->num_cube_layer != linfo->cache_num_cube_layer) { + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cube_pool); + linfo->cache_num_cube_layer = linfo->num_cube_layer; + linfo->update_flag |= LIGHT_UPDATE_SHADOW_CUBE; + } + + if (linfo->num_cascade_layer != linfo->cache_num_cascade_layer) { + DRW_TEXTURE_FREE_SAFE(sldata->shadow_cascade_pool); + linfo->cache_num_cascade_layer = linfo->num_cascade_layer; + } + + switch (linfo->shadow_method) { + case SHADOW_ESM: shadow_pool_format = ((linfo->shadow_high_bitdepth) ? GPU_R32F : GPU_R16F); break; + case SHADOW_VSM: shadow_pool_format = ((linfo->shadow_high_bitdepth) ? GPU_RG32F : GPU_RG16F); break; + default: + BLI_assert(!"Incorrect Shadow Method"); + break; + } + + /* Cubemaps */ + if (!sldata->shadow_cube_target) { + sldata->shadow_cube_target = DRW_texture_create_cube( + linfo->shadow_cube_size, GPU_DEPTH_COMPONENT24, 0, NULL); + sldata->shadow_cube_blur = DRW_texture_create_cube( + linfo->shadow_cube_size, shadow_pool_format, DRW_TEX_FILTER, NULL); + } + if (!sldata->shadow_cube_pool) { + sldata->shadow_cube_pool = DRW_texture_create_2D_array( + linfo->shadow_cube_store_size, linfo->shadow_cube_store_size, max_ii(1, linfo->num_cube_layer), + shadow_pool_format, DRW_TEX_FILTER, NULL); + } + GPU_framebuffer_ensure_config(&sldata->shadow_cube_target_fb, { + GPU_ATTACHMENT_TEXTURE(sldata->shadow_cube_target) + }); + GPU_framebuffer_ensure_config(&sldata->shadow_cube_store_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(sldata->shadow_cube_pool) + }); + + /* CSM */ + if (!sldata->shadow_cascade_target) { + sldata->shadow_cascade_target = DRW_texture_create_2D_array( + linfo->shadow_cascade_size, linfo->shadow_cascade_size, MAX_CASCADE_NUM, GPU_DEPTH_COMPONENT24, 0, NULL); + sldata->shadow_cascade_blur = DRW_texture_create_2D_array( + linfo->shadow_cascade_size, linfo->shadow_cascade_size, MAX_CASCADE_NUM, shadow_pool_format, DRW_TEX_FILTER, NULL); + } + if (!sldata->shadow_cascade_pool) { + sldata->shadow_cascade_pool = DRW_texture_create_2D_array( + linfo->shadow_cascade_size, linfo->shadow_cascade_size, max_ii(1, linfo->num_cascade_layer), + shadow_pool_format, DRW_TEX_FILTER, NULL); + } + GPU_framebuffer_ensure_config(&sldata->shadow_cascade_target_fb, { + GPU_ATTACHMENT_TEXTURE(sldata->shadow_cascade_target) + }); + GPU_framebuffer_ensure_config(&sldata->shadow_cascade_store_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(sldata->shadow_cascade_pool) + }); + + /* Update Lamps UBOs. */ + EEVEE_lights_update(sldata, vedata); +} + +float light_attenuation_radius_get(Lamp *la, float light_threshold) +{ + if (la->mode & LA_CUSTOM_ATTENUATION) + return la->att_dist; + + /* Compute max light power. */ + float power = max_fff(la->r, la->g, la->b); + power *= fabsf(la->energy); + power *= max_ff(1.0f, la->spec_fac); + /* Compute the distance (using the inverse square law) + * at which the light power reaches the light_threshold. */ + float distance = sqrtf(max_ff(1e-16, power / max_ff(1e-16, light_threshold))); + return distance; +} + +static void light_shape_parameters_set(EEVEE_Light *evli, const Lamp *la, float scale[3]) +{ + if (la->type == LA_SPOT) { + /* Spot size & blend */ + evli->sizex = scale[0] / scale[2]; + evli->sizey = scale[1] / scale[2]; + evli->spotsize = cosf(la->spotsize * 0.5f); + evli->spotblend = (1.0f - evli->spotsize) * la->spotblend; + evli->radius = max_ff(0.001f, la->area_size); + } + else if (la->type == LA_AREA) { + evli->sizex = max_ff(0.003f, la->area_size * scale[0] * 0.5f); + if (ELEM(la->area_shape, LA_AREA_RECT, LA_AREA_ELLIPSE)) { + evli->sizey = max_ff(0.003f, la->area_sizey * scale[1] * 0.5f); + } + else { + evli->sizey = max_ff(0.003f, la->area_size * scale[1] * 0.5f); + } + } + else { + evli->radius = max_ff(0.001f, la->area_size); + } +} + +static float light_shape_power_get(const Lamp *la, const EEVEE_Light *evli) +{ + float power; + /* Make illumination power constant */ + if (la->type == LA_AREA) { + power = 1.0f / (evli->sizex * evli->sizey * 4.0f * M_PI) * /* 1/(w*h*Pi) */ + 80.0f; /* XXX : Empirical, Fit cycles power */ + if (ELEM(la->area_shape, LA_AREA_DISK, LA_AREA_ELLIPSE)) { + /* Scale power to account for the lower area of the ellipse compared to the surrounding rectangle. */ + power *= 4.0f / M_PI; + } + } + else if (la->type == LA_SPOT || la->type == LA_LOCAL) { + power = 1.0f / (4.0f * evli->radius * evli->radius * M_PI * M_PI) * /* 1/(4*r²*Pi²) */ + M_PI * M_PI * 10.0; /* XXX : Empirical, Fit cycles power */ + + /* for point lights (a.k.a radius == 0.0) */ + // power = M_PI * M_PI * 0.78; /* XXX : Empirical, Fit cycles power */ + } + else { + power = 1.0f / (evli->radius * evli->radius * M_PI); /* 1/(r²*Pi) */ + /* Make illumation power closer to cycles for bigger radii. Cycles uses a cos^3 term that we cannot reproduce + * so we account for that by scaling the light power. This function is the result of a rough manual fitting. */ + power += 1.0f / (2.0f * M_PI); /* power *= 1 + r²/2 */ + } + return power; +} + +/* Update buffer with lamp data */ +static void eevee_light_setup(Object *ob, EEVEE_Light *evli) +{ + Lamp *la = (Lamp *)ob->data; + float mat[4][4], scale[3], power, att_radius; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const float light_threshold = draw_ctx->scene->eevee.light_threshold; + + /* Position */ + copy_v3_v3(evli->position, ob->obmat[3]); + + /* Color */ + copy_v3_v3(evli->color, &la->r); + + evli->spec = la->spec_fac; + + /* Influence Radius */ + att_radius = light_attenuation_radius_get(la, light_threshold); + /* Take the inverse square of this distance. */ + evli->invsqrdist = 1.0 / max_ff(1e-4f, att_radius * att_radius); + + /* Vectors */ + normalize_m4_m4_ex(mat, ob->obmat, scale); + copy_v3_v3(evli->forwardvec, mat[2]); + normalize_v3(evli->forwardvec); + negate_v3(evli->forwardvec); + + copy_v3_v3(evli->rightvec, mat[0]); + normalize_v3(evli->rightvec); + + copy_v3_v3(evli->upvec, mat[1]); + normalize_v3(evli->upvec); + + light_shape_parameters_set(evli, la, scale); + + /* Lamp Type */ + evli->lamptype = (float)la->type; + if ((la->type == LA_AREA) && ELEM(la->area_shape, LA_AREA_DISK, LA_AREA_ELLIPSE)) { + evli->lamptype = LAMPTYPE_AREA_ELLIPSE; + } + + power = light_shape_power_get(la, evli); + mul_v3_fl(evli->color, power * la->energy); + + /* No shadow by default */ + evli->shadowid = -1.0f; +} + +/** + * Special ball distribution: + * Point are distributed in a way that when they are orthogonaly + * projected into any plane, the resulting distribution is (close to) + * a uniform disc distribution. + **/ +static void sample_ball(int sample_ofs, float radius, float rsample[3]) +{ + double ht_point[3]; + double ht_offset[3] = {0.0, 0.0, 0.0}; + uint ht_primes[3] = {2, 3, 7}; + + BLI_halton_3D(ht_primes, ht_offset, sample_ofs, ht_point); + + float omega = ht_point[1] * 2.0f * M_PI; + + rsample[2] = ht_point[0] * 2.0f - 1.0f; /* cos theta */ + + float r = sqrtf(fmaxf(0.0f, 1.0f - rsample[2] * rsample[2])); /* sin theta */ + + rsample[0] = r * cosf(omega); + rsample[1] = r * sinf(omega); + + radius *= sqrt(sqrt(ht_point[2])); + mul_v3_fl(rsample, radius); +} + +static void sample_rectangle( + int sample_ofs, float x_axis[3], float y_axis[3], float size_x, float size_y, + float rsample[3]) +{ + double ht_point[2]; + double ht_offset[2] = {0.0, 0.0}; + uint ht_primes[2] = {2, 3}; + + BLI_halton_2D(ht_primes, ht_offset, sample_ofs, ht_point); + + /* Change ditribution center to be 0,0 */ + ht_point[0] = (ht_point[0] > 0.5f) ? ht_point[0] - 1.0f : ht_point[0]; + ht_point[1] = (ht_point[1] > 0.5f) ? ht_point[1] - 1.0f : ht_point[1]; + + zero_v3(rsample); + madd_v3_v3fl(rsample, x_axis, (ht_point[0] * 2.0f) * size_x); + madd_v3_v3fl(rsample, y_axis, (ht_point[1] * 2.0f) * size_y); +} + +static void sample_ellipse( + int sample_ofs, float x_axis[3], float y_axis[3], float size_x, float size_y, + float rsample[3]) +{ + double ht_point[2]; + double ht_offset[2] = {0.0, 0.0}; + uint ht_primes[2] = {2, 3}; + + BLI_halton_2D(ht_primes, ht_offset, sample_ofs, ht_point); + + /* Uniform disc sampling. */ + float omega = ht_point[1] * 2.0f * M_PI; + float r = sqrtf(ht_point[0]); + ht_point[0] = r * cosf(omega) * size_x; + ht_point[1] = r * sinf(omega) * size_y; + + zero_v3(rsample); + madd_v3_v3fl(rsample, x_axis, ht_point[0]); + madd_v3_v3fl(rsample, y_axis, ht_point[1]); +} + + +static void shadow_cube_random_position_set( + EEVEE_Light *evli, Lamp *la, + int sample_ofs, + float ws_sample_pos[3]) +{ + float jitter[3]; + +#ifndef DEBUG_SHADOW_DISTRIBUTION + int i = sample_ofs; +#else + for (int i = 0; i <= sample_ofs; ++i) { +#endif + switch (la->type) { + case LA_AREA: + if (ELEM(la->area_shape, LA_AREA_RECT, LA_AREA_SQUARE)) { + sample_rectangle(i, evli->rightvec, evli->upvec, evli->sizex, evli->sizey, jitter); + } + else { + sample_ellipse(i, evli->rightvec, evli->upvec, evli->sizex, evli->sizey, jitter); + } + break; + default: + sample_ball(i, evli->radius, jitter); + } +#ifdef DEBUG_SHADOW_DISTRIBUTION + float p[3]; + add_v3_v3v3(p, jitter, ws_sample_pos); + DRW_debug_sphere(p, 0.01f, (float[4]){1.0f, (sample_ofs == i) ? 1.0f : 0.0f, 0.0f, 1.0f}); + } +#endif + add_v3_v3(ws_sample_pos, jitter); +} + +static void eevee_shadow_cube_setup(Object *ob, EEVEE_LampsInfo *linfo, EEVEE_LampEngineData *led, int sample_ofs) +{ + EEVEE_ShadowCubeData *sh_data = &led->data.scd; + EEVEE_Light *evli = linfo->light_data + sh_data->light_id; + EEVEE_Shadow *ubo_data = linfo->shadow_data + sh_data->shadow_id; + EEVEE_ShadowCube *cube_data = linfo->shadow_cube_data + sh_data->cube_id; + Lamp *la = (Lamp *)ob->data; + + copy_v3_v3(cube_data->position, ob->obmat[3]); + + if (linfo->soft_shadows) { + shadow_cube_random_position_set(evli, la, sample_ofs, cube_data->position); + } + + ubo_data->bias = 0.05f * la->bias; + ubo_data->near = la->clipsta; + ubo_data->far = 1.0f / (evli->invsqrdist * evli->invsqrdist); + ubo_data->exp = (linfo->shadow_method == SHADOW_VSM) ? la->bleedbias : la->bleedexp; + + evli->shadowid = (float)(sh_data->shadow_id); + ubo_data->shadow_start = (float)(sh_data->layer_id); + ubo_data->data_start = (float)(sh_data->cube_id); + ubo_data->shadow_blur = la->soft * 0.02f; /* Used by translucence shadowmap blur */ + + ubo_data->contact_dist = (la->mode & LA_SHAD_CONTACT) ? la->contact_dist : 0.0f; + ubo_data->contact_bias = 0.05f * la->contact_bias; + ubo_data->contact_spread = la->contact_spread; + ubo_data->contact_thickness = la->contact_thickness; +} + +static void shadow_cascade_random_matrix_set(float mat[4][4], float radius, int sample_ofs) +{ + float jitter[3]; + +#ifndef DEBUG_SHADOW_DISTRIBUTION + int i = sample_ofs; +#else + for (int i = 0; i <= sample_ofs; ++i) { +#endif + sample_ellipse(i, mat[0], mat[1], radius, radius, jitter); +#ifdef DEBUG_SHADOW_DISTRIBUTION + float p[3]; + add_v3_v3v3(p, jitter, mat[2]); + DRW_debug_sphere(p, 0.01f, (float[4]){1.0f, (sample_ofs == i) ? 1.0f : 0.0f, 0.0f, 1.0f}); + } +#endif + + add_v3_v3(mat[2], jitter); + orthogonalize_m4(mat, 2); +} + +#define LERP(t, a, b) ((a) + (t) * ((b) - (a))) + +static double round_to_digits(double value, int digits) +{ + double factor = pow(10.0, digits - ceil(log10(fabs(value)))); + return round(value * factor) / factor; +} + +static void frustum_min_bounding_sphere(const float corners[8][3], float r_center[3], float *r_radius) +{ +#if 0 /* Simple solution but waste too much space. */ + float minvec[3], maxvec[3]; + + /* compute the bounding box */ + INIT_MINMAX(minvec, maxvec); + for (int i = 0; i < 8; ++i) { + minmax_v3v3_v3(minvec, maxvec, corners[i]); + } + + /* compute the bounding sphere of this box */ + r_radius = len_v3v3(minvec, maxvec) * 0.5f; + add_v3_v3v3(r_center, minvec, maxvec); + mul_v3_fl(r_center, 0.5f); +#else + /* Find averaged center. */ + zero_v3(r_center); + for (int i = 0; i < 8; ++i) { + add_v3_v3(r_center, corners[i]); + } + mul_v3_fl(r_center, 1.0f / 8.0f); + + /* Search the largest distance from the sphere center. */ + *r_radius = 0.0f; + for (int i = 0; i < 8; ++i) { + float rad = len_squared_v3v3(corners[i], r_center); + if (rad > *r_radius) { + *r_radius = rad; + } + } + + /* TODO try to reduce the radius further by moving the center. + * Remember we need a __stable__ solution! */ + + /* Try to reduce float imprecision leading to shimmering. */ + *r_radius = (float)round_to_digits(sqrtf(*r_radius), 3); +#endif +} + +static void eevee_shadow_cascade_setup( + Object *ob, EEVEE_LampsInfo *linfo, EEVEE_LampEngineData *led, + DRWMatrixState *saved_mats, float view_near, float view_far, int sample_ofs) +{ + Lamp *la = (Lamp *)ob->data; + + /* Camera Matrices */ + float (*persinv)[4] = saved_mats->mat[DRW_MAT_PERSINV]; + float (*vp_projmat)[4] = saved_mats->mat[DRW_MAT_WIN]; + bool is_persp = DRW_viewport_is_persp_get(); + + /* Lamps Matrices */ + int cascade_nbr = la->cascade_count; + + EEVEE_ShadowCascadeData *sh_data = &led->data.scad; + EEVEE_Light *evli = linfo->light_data + sh_data->light_id; + EEVEE_Shadow *ubo_data = linfo->shadow_data + sh_data->shadow_id; + EEVEE_ShadowCascade *cascade_data = linfo->shadow_cascade_data + sh_data->cascade_id; + + /* obmat = Object Space > World Space */ + /* viewmat = World Space > View Space */ + float (*viewmat)[4] = sh_data->viewmat; +#if 0 /* done at culling time */ + normalize_m4_m4(viewmat, ob->obmat); +#endif + + if (linfo->soft_shadows) { + shadow_cascade_random_matrix_set(viewmat, evli->radius, sample_ofs); + } + + copy_m4_m4(sh_data->viewinv, viewmat); + invert_m4(viewmat); + + /* The technique consists into splitting + * the view frustum into several sub-frustum + * that are individually receiving one shadow map */ + + float csm_start, csm_end; + + if (is_persp) { + csm_start = view_near; + csm_end = max_ff(view_far, -la->cascade_max_dist); + /* Avoid artifacts */ + csm_end = min_ff(view_near, csm_end); + } + else { + csm_start = -view_far; + csm_end = view_far; + } + + /* init near/far */ + for (int c = 0; c < MAX_CASCADE_NUM; ++c) { + cascade_data->split_start[c] = csm_end; + cascade_data->split_end[c] = csm_end; + } + + /* Compute split planes */ + float splits_start_ndc[MAX_CASCADE_NUM]; + float splits_end_ndc[MAX_CASCADE_NUM]; + + { + /* Nearest plane */ + float p[4] = {1.0f, 1.0f, csm_start, 1.0f}; + /* TODO: we don't need full m4 multiply here */ + mul_m4_v4(vp_projmat, p); + splits_start_ndc[0] = p[2]; + if (is_persp) { + splits_start_ndc[0] /= p[3]; + } + } + + { + /* Farthest plane */ + float p[4] = {1.0f, 1.0f, csm_end, 1.0f}; + /* TODO: we don't need full m4 multiply here */ + mul_m4_v4(vp_projmat, p); + splits_end_ndc[cascade_nbr - 1] = p[2]; + if (is_persp) { + splits_end_ndc[cascade_nbr - 1] /= p[3]; + } + } + + cascade_data->split_start[0] = csm_start; + cascade_data->split_end[cascade_nbr - 1] = csm_end; + + for (int c = 1; c < cascade_nbr; ++c) { + /* View Space */ + float linear_split = LERP(((float)(c) / (float)cascade_nbr), csm_start, csm_end); + float exp_split = csm_start * powf(csm_end / csm_start, (float)(c) / (float)cascade_nbr); + + if (is_persp) { + cascade_data->split_start[c] = LERP(la->cascade_exponent, linear_split, exp_split); + } + else { + cascade_data->split_start[c] = linear_split; + } + cascade_data->split_end[c - 1] = cascade_data->split_start[c]; + + /* Add some overlap for smooth transition */ + cascade_data->split_start[c] = LERP(la->cascade_fade, cascade_data->split_end[c - 1], + (c > 1) ? cascade_data->split_end[c - 2] : cascade_data->split_start[0]); + + /* NDC Space */ + { + float p[4] = {1.0f, 1.0f, cascade_data->split_start[c], 1.0f}; + /* TODO: we don't need full m4 multiply here */ + mul_m4_v4(vp_projmat, p); + splits_start_ndc[c] = p[2]; + + if (is_persp) { + splits_start_ndc[c] /= p[3]; + } + } + + { + float p[4] = {1.0f, 1.0f, cascade_data->split_end[c - 1], 1.0f}; + /* TODO: we don't need full m4 multiply here */ + mul_m4_v4(vp_projmat, p); + splits_end_ndc[c - 1] = p[2]; + + if (is_persp) { + splits_end_ndc[c - 1] /= p[3]; + } + } + } + + /* Set last cascade split fade distance into the first split_start. */ + float prev_split = (cascade_nbr > 1) ? cascade_data->split_end[cascade_nbr - 2] : cascade_data->split_start[0]; + cascade_data->split_start[0] = LERP(la->cascade_fade, cascade_data->split_end[cascade_nbr - 1], prev_split); + + /* For each cascade */ + for (int c = 0; c < cascade_nbr; ++c) { + float (*projmat)[4] = sh_data->projmat[c]; + /* Given 8 frustum corners */ + float corners[8][3] = { + /* Near Cap */ + { 1.0f, -1.0f, splits_start_ndc[c]}, + {-1.0f, -1.0f, splits_start_ndc[c]}, + {-1.0f, 1.0f, splits_start_ndc[c]}, + { 1.0f, 1.0f, splits_start_ndc[c]}, + /* Far Cap */ + { 1.0f, -1.0f, splits_end_ndc[c]}, + {-1.0f, -1.0f, splits_end_ndc[c]}, + {-1.0f, 1.0f, splits_end_ndc[c]}, + { 1.0f, 1.0f, splits_end_ndc[c]} + }; + + /* Transform them into world space */ + for (int i = 0; i < 8; ++i) { + mul_project_m4_v3(persinv, corners[i]); + } + + float center[3]; + frustum_min_bounding_sphere(corners, center, &(sh_data->radius[c])); + +#ifdef DEBUG_CSM + float dbg_col[4] = {0.0f, 0.0f, 0.0f, 1.0f}; + if (c < 3) { + dbg_col[c] = 1.0f; + } + DRW_debug_bbox((BoundBox *)&corners, dbg_col); + DRW_debug_sphere(center, sh_data->radius[c], dbg_col); +#endif + + /* Project into lightspace */ + mul_m4_v3(viewmat, center); + + /* Snap projection center to nearest texel to cancel shimmering. */ + float shadow_origin[2], shadow_texco[2]; + /* Light to texture space. */ + mul_v2_v2fl(shadow_origin, center, linfo->shadow_cascade_size / (2.0f * sh_data->radius[c])); + + /* Find the nearest texel. */ + shadow_texco[0] = roundf(shadow_origin[0]); + shadow_texco[1] = roundf(shadow_origin[1]); + + /* Compute offset. */ + sub_v2_v2(shadow_texco, shadow_origin); + mul_v2_fl(shadow_texco, (2.0f * sh_data->radius[c]) / linfo->shadow_cascade_size); /* Texture to light space. */ + + /* Apply offset. */ + add_v2_v2(center, shadow_texco); + + /* Expand the projection to cover frustum range */ + rctf rect_cascade; + BLI_rctf_init_pt_radius(&rect_cascade, center, sh_data->radius[c]); + orthographic_m4(projmat, + rect_cascade.xmin, rect_cascade.xmax, + rect_cascade.ymin, rect_cascade.ymax, + la->clipsta, la->clipend); + + mul_m4_m4m4(sh_data->viewprojmat[c], projmat, viewmat); + mul_m4_m4m4(cascade_data->shadowmat[c], texcomat, sh_data->viewprojmat[c]); + +#ifdef DEBUG_CSM + DRW_debug_m4_as_bbox(sh_data->viewprojmat[c], dbg_col, true); +#endif + } + + ubo_data->bias = 0.05f * la->bias; + ubo_data->near = la->clipsta; + ubo_data->far = la->clipend; + ubo_data->exp = (linfo->shadow_method == SHADOW_VSM) ? la->bleedbias : la->bleedexp; + + evli->shadowid = (float)(sh_data->shadow_id); + ubo_data->shadow_start = (float)(sh_data->layer_id); + ubo_data->data_start = (float)(sh_data->cascade_id); + ubo_data->shadow_blur = la->soft * 0.02f; /* Used by translucence shadowmap blur */ + + ubo_data->contact_dist = (la->mode & LA_SHAD_CONTACT) ? la->contact_dist : 0.0f; + ubo_data->contact_bias = 0.05f * la->contact_bias; + ubo_data->contact_spread = la->contact_spread; + ubo_data->contact_thickness = la->contact_thickness; +} + +/* Used for checking if object is inside the shadow volume. */ +static bool sphere_bbox_intersect(const EEVEE_BoundSphere *bs, const EEVEE_BoundBox *bb) +{ + /* We are testing using a rougher AABB vs AABB test instead of full AABB vs Sphere. */ + /* TODO test speed with AABB vs Sphere. */ + bool x = fabsf(bb->center[0] - bs->center[0]) <= (bb->halfdim[0] + bs->radius); + bool y = fabsf(bb->center[1] - bs->center[1]) <= (bb->halfdim[1] + bs->radius); + bool z = fabsf(bb->center[2] - bs->center[2]) <= (bb->halfdim[2] + bs->radius); + + return x && y && z; +} + +void EEVEE_lights_update(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + EEVEE_LampsInfo *linfo = sldata->lamps; + Object *ob; + int i; + char *flag; + EEVEE_ShadowCaster *shcaster; + EEVEE_BoundSphere *bsphere; + EEVEE_ShadowCasterBuffer *frontbuffer = linfo->shcaster_frontbuffer; + EEVEE_ShadowCasterBuffer *backbuffer = linfo->shcaster_backbuffer; + + EEVEE_LightBits update_bits = {{0}}; + if ((linfo->update_flag & LIGHT_UPDATE_SHADOW_CUBE) != 0) { + /* Update all lights. */ + lightbits_set_all(&update_bits, true); + } + else { + /* Search for deleted shadow casters and if shcaster WAS in shadow radius. */ + /* No need to run this if we already update all lamps. */ + EEVEE_LightBits past_bits = {{0}}; + EEVEE_LightBits curr_bits = {{0}}; + shcaster = backbuffer->shadow_casters; + flag = backbuffer->flags; + for (i = 0; i < backbuffer->count; ++i, ++flag, ++shcaster) { + /* If the shadowcaster has been deleted or updated. */ + if (*flag != 0) { + /* Add the lamps that were intersecting with its BBox. */ + lightbits_or(&past_bits, &shcaster->bits); + } + } + /* Convert old bits to new bits and add result to final update bits. */ + /* NOTE: This might be overkill since all lights are tagged to refresh if + * the light count changes. */ + lightbits_convert(&curr_bits, &past_bits, linfo->new_shadow_id, MAX_LIGHT); + lightbits_or(&update_bits, &curr_bits); + } + + /* Search for updates in current shadow casters. */ + shcaster = frontbuffer->shadow_casters; + flag = frontbuffer->flags; + for (i = 0; i < frontbuffer->count; i++, flag++, shcaster++) { + /* Run intersection checks to fill the bitfields. */ + bsphere = linfo->shadow_bounds; + for (int j = 0; j < linfo->cpu_cube_len; j++, bsphere++) { + bool iter = sphere_bbox_intersect(bsphere, &shcaster->bbox); + lightbits_set_single(&shcaster->bits, j, iter); + } + /* Only add to final bits if objects has been updated. */ + if (*flag != 0) { + lightbits_or(&update_bits, &shcaster->bits); + } + } + + /* Setup shadow cube in UBO and tag for update if necessary. */ + for (i = 0; (i < MAX_SHADOW_CUBE) && (ob = linfo->shadow_cube_ref[i]); i++) { + EEVEE_LampEngineData *led = EEVEE_lamp_data_ensure(ob); + + eevee_shadow_cube_setup(ob, linfo, led, effects->taa_current_sample - 1); + if (lightbits_get(&update_bits, i) != 0 || linfo->soft_shadows) { + led->need_update = true; + } + } + + /* Resize shcasters buffers if too big. */ + if (frontbuffer->alloc_count - frontbuffer->count > SHADOW_CASTER_ALLOC_CHUNK) { + frontbuffer->alloc_count = (frontbuffer->count / SHADOW_CASTER_ALLOC_CHUNK) * SHADOW_CASTER_ALLOC_CHUNK; + frontbuffer->alloc_count += (frontbuffer->count % SHADOW_CASTER_ALLOC_CHUNK != 0) ? SHADOW_CASTER_ALLOC_CHUNK : 0; + frontbuffer->shadow_casters = MEM_reallocN(frontbuffer->shadow_casters, sizeof(EEVEE_ShadowCaster) * frontbuffer->alloc_count); + frontbuffer->flags = MEM_reallocN(frontbuffer->flags, sizeof(EEVEE_ShadowCaster) * frontbuffer->alloc_count); + } +} + +/* this refresh lamps shadow buffers */ +void EEVEE_draw_shadows(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + EEVEE_LampsInfo *linfo = sldata->lamps; + const DRWContextState *draw_ctx = DRW_context_state_get(); + const float light_threshold = draw_ctx->scene->eevee.light_threshold; + Object *ob; + int i; + + DRWMatrixState saved_mats; + int saved_ray_type = sldata->common_data.ray_type; + + /* TODO: make it optionnal if we don't draw shadows. */ + sldata->common_data.ray_type = EEVEE_RAY_SHADOW; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + + /* Precompute all shadow/view test before rendering and trashing the culling cache. */ + bool cube_visible[MAX_SHADOW_CUBE]; + for (i = 0; (ob = linfo->shadow_cube_ref[i]) && (i < MAX_SHADOW_CUBE); i++) { + Lamp *la = (Lamp *)ob->data; + BoundSphere bsphere = { + .center = {ob->obmat[3][0], ob->obmat[3][1], ob->obmat[3][2]}, + .radius = light_attenuation_radius_get(la, light_threshold) + }; + cube_visible[i] = DRW_culling_sphere_test(&bsphere); + } + bool cascade_visible[MAX_SHADOW_CASCADE]; + for (i = 0; (ob = linfo->shadow_cascade_ref[i]) && (i < MAX_SHADOW_CASCADE); i++) { + EEVEE_LampEngineData *led = EEVEE_lamp_data_get(ob); + EEVEE_ShadowCascadeData *sh_data = &led->data.scad; + float plane[4]; + normalize_m4_m4(sh_data->viewmat, ob->obmat); + + plane_from_point_normal_v3(plane, sh_data->viewmat[3], sh_data->viewmat[2]); + /* TODO: check against near/far instead of "local Z = 0" plane. + * Or even the cascades AABB. */ + cascade_visible[i] = DRW_culling_plane_test(plane); + } + + /* We need to save the Matrices before overidding them */ + DRW_viewport_matrix_get_all(&saved_mats); + + /* Cube Shadow Maps */ + DRW_stats_group_start("Cube Shadow Maps"); + /* Render each shadow to one layer of the array */ + for (i = 0; (ob = linfo->shadow_cube_ref[i]) && (i < MAX_SHADOW_CUBE); i++) { + EEVEE_LampEngineData *led = EEVEE_lamp_data_ensure(ob); + Lamp *la = (Lamp *)ob->data; + + if (!led->need_update || !cube_visible[i]) { + continue; + } + + DRWMatrixState render_mats; + float (*winmat)[4] = render_mats.mat[DRW_MAT_WIN]; + float (*viewmat)[4] = render_mats.mat[DRW_MAT_VIEW]; + float (*persmat)[4] = render_mats.mat[DRW_MAT_PERS]; + + EEVEE_ShadowRender *srd = &linfo->shadow_render_data; + EEVEE_ShadowCubeData *evscd = &led->data.scd; + EEVEE_ShadowCube *cube_data = linfo->shadow_cube_data + evscd->cube_id; + + srd->clip_near = la->clipsta; + srd->clip_far = light_attenuation_radius_get(la, light_threshold); + srd->stored_texel_size = 1.0 / (float)linfo->shadow_cube_store_size; + srd->exponent = la->bleedexp; + copy_v3_v3(srd->position, cube_data->position); + + perspective_m4(winmat, -srd->clip_near, srd->clip_near, -srd->clip_near, srd->clip_near, srd->clip_near, srd->clip_far); + + DRW_uniformbuffer_update(sldata->shadow_render_ubo, srd); + + /* Render shadow cube */ + /* Render 6 faces separately: seems to be faster for the general case. + * The only time it's more beneficial is when the CPU culling overhead + * outweigh the instancing overhead. which is rarely the case. */ + for (int j = 0; j < 6; j++) { + /* TODO optimize */ + float tmp[4][4]; + unit_m4(tmp); + negate_v3_v3(tmp[3], srd->position); + mul_m4_m4m4(viewmat, cubefacemat[j], tmp); + mul_m4_m4m4(persmat, winmat, viewmat); + invert_m4_m4(render_mats.mat[DRW_MAT_WININV], winmat); + invert_m4_m4(render_mats.mat[DRW_MAT_VIEWINV], viewmat); + invert_m4_m4(render_mats.mat[DRW_MAT_PERSINV], persmat); + + DRW_viewport_matrix_override_set_all(&render_mats); + + GPU_framebuffer_texture_cubeface_attach(sldata->shadow_cube_target_fb, + sldata->shadow_cube_target, 0, j, 0); + GPU_framebuffer_bind(sldata->shadow_cube_target_fb); + GPU_framebuffer_clear_depth(sldata->shadow_cube_target_fb, 1.0f); + DRW_draw_pass(psl->shadow_pass); + } + + /* 0.001f is arbitrary, but it should be relatively small so that filter size is not too big. */ + float filter_texture_size = la->soft * 0.001f; + float filter_pixel_size = ceil(filter_texture_size / srd->cube_texel_size); + linfo->filter_size = srd->cube_texel_size * ((filter_pixel_size > 1.0f) ? 1.5f : 0.0f); + + /* TODO: OPTI: Filter all faces in one/two draw call */ + /* TODO: OPTI: Don't do this intermediate step if no filter is needed. */ + for (linfo->current_shadow_face = 0; + linfo->current_shadow_face < 6; + linfo->current_shadow_face++) + { + /* Copy using a small 3x3 box filter */ + GPU_framebuffer_texture_cubeface_attach(sldata->shadow_cube_store_fb, sldata->shadow_cube_blur, 0, + linfo->current_shadow_face, 0); + GPU_framebuffer_bind(sldata->shadow_cube_store_fb); + DRW_draw_pass(psl->shadow_cube_copy_pass); + } + + /* Push it to shadowmap array */ + + /* Adjust constants if concentric samples change. */ + const float max_filter_size = 7.5f; + const float magic = 4.5f; /* Dunno why but that works. */ + const int max_sample = 256; + + if (filter_pixel_size > 2.0f) { + linfo->filter_size = srd->cube_texel_size * max_filter_size * magic; + filter_pixel_size = max_ff(0.0f, filter_pixel_size - 3.0f); + /* Compute number of concentric samples. Depends directly on filter size. */ + float pix_size_sqr = filter_pixel_size * filter_pixel_size; + srd->shadow_samples_len = min_ii(max_sample, 4 + 8 * (int)filter_pixel_size + 4 * (int)(pix_size_sqr)); + } + else { + linfo->filter_size = 0.0f; + srd->shadow_samples_len = 4; + } + srd->shadow_samples_len_inv = 1.0f / (float)srd->shadow_samples_len; + DRW_uniformbuffer_update(sldata->shadow_render_ubo, srd); + + GPU_framebuffer_texture_layer_attach(sldata->shadow_cube_store_fb, sldata->shadow_cube_pool, 0, evscd->layer_id, 0); + GPU_framebuffer_bind(sldata->shadow_cube_store_fb); + + DRWPass *store_pass = eevee_lights_cube_store_pass_get(psl, sldata, linfo->shadow_method, srd->shadow_samples_len); + DRW_draw_pass(store_pass); + + if (linfo->soft_shadows == false) { + led->need_update = false; + } + } + linfo->update_flag &= ~LIGHT_UPDATE_SHADOW_CUBE; + DRW_stats_group_end(); + + DRW_viewport_matrix_override_set_all(&saved_mats); + float near = DRW_viewport_near_distance_get(); + float far = DRW_viewport_far_distance_get(); + + /* Cascaded Shadow Maps */ + DRW_stats_group_start("Cascaded Shadow Maps"); + for (i = 0; (ob = linfo->shadow_cascade_ref[i]) && (i < MAX_SHADOW_CASCADE); i++) { + if (!cascade_visible[i]) { + continue; + } + + EEVEE_LampEngineData *led = EEVEE_lamp_data_ensure(ob); + Lamp *la = (Lamp *)ob->data; + + EEVEE_ShadowCascadeData *evscd = &led->data.scad; + EEVEE_ShadowRender *srd = &linfo->shadow_render_data; + + DRWMatrixState render_mats; + float (*winmat)[4] = render_mats.mat[DRW_MAT_WIN]; + float (*viewmat)[4] = render_mats.mat[DRW_MAT_VIEW]; + float (*persmat)[4] = render_mats.mat[DRW_MAT_PERS]; + + eevee_shadow_cascade_setup(ob, linfo, led, &saved_mats, near, far, effects->taa_current_sample - 1); + + srd->clip_near = la->clipsta; + srd->clip_far = la->clipend; + srd->stored_texel_size = 1.0 / (float)linfo->shadow_cascade_size; + + DRW_uniformbuffer_update(sldata->shadow_render_ubo, &linfo->shadow_render_data); + + copy_m4_m4(viewmat, evscd->viewmat); + invert_m4_m4(render_mats.mat[DRW_MAT_VIEWINV], viewmat); + + /* Render shadow cascades */ + /* Render cascade separately: seems to be faster for the general case. + * The only time it's more beneficial is when the CPU culling overhead + * outweigh the instancing overhead. which is rarely the case. */ + for (int j = 0; j < la->cascade_count; j++) { + copy_m4_m4(winmat, evscd->projmat[j]); + copy_m4_m4(persmat, evscd->viewprojmat[j]); + invert_m4_m4(render_mats.mat[DRW_MAT_WININV], winmat); + invert_m4_m4(render_mats.mat[DRW_MAT_PERSINV], persmat); + + DRW_viewport_matrix_override_set_all(&render_mats); + + GPU_framebuffer_texture_layer_attach(sldata->shadow_cascade_target_fb, + sldata->shadow_cascade_target, 0, j, 0); + GPU_framebuffer_bind(sldata->shadow_cascade_target_fb); + GPU_framebuffer_clear_depth(sldata->shadow_cascade_target_fb, 1.0f); + DRW_draw_pass(psl->shadow_pass); + } + + /* TODO: OPTI: Filter all cascade in one/two draw call */ + for (linfo->current_shadow_cascade = 0; + linfo->current_shadow_cascade < la->cascade_count; + ++linfo->current_shadow_cascade) + { + /* 0.01f factor to convert to percentage */ + float filter_texture_size = la->soft * 0.01f / evscd->radius[linfo->current_shadow_cascade]; + float filter_pixel_size = ceil(linfo->shadow_cascade_size * filter_texture_size); + + /* Copy using a small 3x3 box filter */ + /* NOTE: We always do it in the case of CSM because of artifacts in the farthest cascade. */ + linfo->filter_size = srd->stored_texel_size; + GPU_framebuffer_texture_layer_attach( + sldata->shadow_cascade_store_fb, sldata->shadow_cascade_blur, 0, linfo->current_shadow_cascade, 0); + GPU_framebuffer_bind(sldata->shadow_cascade_store_fb); + DRW_draw_pass(psl->shadow_cascade_copy_pass); + + /* Push it to shadowmap array and blur more */ + + /* Adjust constants if concentric samples change. */ + const float max_filter_size = 7.5f; + const float magic = 3.2f; /* Arbitrary: less banding */ + const int max_sample = 256; + + if (filter_pixel_size > 2.0f) { + linfo->filter_size = srd->stored_texel_size * max_filter_size * magic; + filter_pixel_size = max_ff(0.0f, filter_pixel_size - 3.0f); + /* Compute number of concentric samples. Depends directly on filter size. */ + float pix_size_sqr = filter_pixel_size * filter_pixel_size; + srd->shadow_samples_len = min_ii(max_sample, 4 + 8 * (int)filter_pixel_size + 4 * (int)(pix_size_sqr)); + } + else { + linfo->filter_size = 0.0f; + srd->shadow_samples_len = 4; + } + srd->shadow_samples_len_inv = 1.0f / (float)srd->shadow_samples_len; + DRW_uniformbuffer_update(sldata->shadow_render_ubo, &linfo->shadow_render_data); + + int layer = evscd->layer_id + linfo->current_shadow_cascade; + GPU_framebuffer_texture_layer_attach(sldata->shadow_cascade_store_fb, sldata->shadow_cascade_pool, 0, layer, 0); + GPU_framebuffer_bind(sldata->shadow_cascade_store_fb); + + DRWPass *store_pass = eevee_lights_cascade_store_pass_get(psl, sldata, linfo->shadow_method, srd->shadow_samples_len); + DRW_draw_pass(store_pass); + } + } + + DRW_stats_group_end(); + + DRW_viewport_matrix_override_set_all(&saved_mats); + + DRW_uniformbuffer_update(sldata->light_ubo, &linfo->light_data); + DRW_uniformbuffer_update(sldata->shadow_ubo, &linfo->shadow_data); /* Update all data at once */ + + sldata->common_data.ray_type = saved_ray_type; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); +} + +void EEVEE_lights_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.shadow_sh); + for (int i = 0; i < SHADOW_METHOD_MAX; ++i) { + DRW_SHADER_FREE_SAFE(e_data.shadow_store_cube_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.shadow_store_cube_high_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.shadow_store_cascade_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.shadow_store_cascade_high_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.shadow_copy_cube_sh[i]); + DRW_SHADER_FREE_SAFE(e_data.shadow_copy_cascade_sh[i]); + } +} diff --git a/source/blender/draw/engines/eevee/eevee_lookdev.c b/source/blender/draw/engines/eevee/eevee_lookdev.c new file mode 100644 index 00000000000..aa2f480597b --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_lookdev.c @@ -0,0 +1,238 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_lookdev.c + * \ingroup draw_engine + */ +#include "DRW_render.h" + +#include "BKE_camera.h" +#include "BKE_studiolight.h" + +#include "DNA_screen_types.h" +#include "DNA_world_types.h" + +#include "DEG_depsgraph_query.h" + +#include "ED_screen.h" + +#include "UI_resources.h" + +#include "eevee_private.h" +#include "eevee_lightcache.h" + +#include "draw_common.h" + +static void eevee_lookdev_lightcache_delete(EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + + MEM_SAFE_FREE(stl->lookdev_lightcache); + MEM_SAFE_FREE(stl->lookdev_grid_data); + MEM_SAFE_FREE(stl->lookdev_cube_data); + DRW_TEXTURE_FREE_SAFE(txl->lookdev_grid_tx); + DRW_TEXTURE_FREE_SAFE(txl->lookdev_cube_tx); +} + +void EEVEE_lookdev_cache_init( + EEVEE_Data *vedata, DRWShadingGroup **grp, DRWPass *pass, + World *UNUSED(world), EEVEE_LightProbesInfo *pinfo) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + if (LOOK_DEV_STUDIO_LIGHT_ENABLED(v3d)) { + StudioLight *sl = BKE_studiolight_find(v3d->shading.lookdev_light, STUDIOLIGHT_ORIENTATIONS_MATERIAL_MODE); + if (sl && (sl->flag & STUDIOLIGHT_TYPE_WORLD)) { + GPUShader *shader = EEVEE_shaders_default_studiolight_sh_get(); + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + GPUTexture *tex = NULL; + + /* If one of the component is missing we start from scratch. */ + if ((stl->lookdev_grid_data == NULL) || + (stl->lookdev_cube_data == NULL) || + (txl->lookdev_grid_tx == NULL) || + (txl->lookdev_cube_tx == NULL)) + { + eevee_lookdev_lightcache_delete(vedata); + } + + if (stl->lookdev_lightcache == NULL) { + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); +#if defined(IRRADIANCE_SH_L2) + int grid_res = 4; +#elif defined(IRRADIANCE_CUBEMAP) + int grid_res = 8; +#elif defined(IRRADIANCE_HL2) + int grid_res = 4; +#endif + int cube_res = OCTAHEDRAL_SIZE_FROM_CUBESIZE(scene_eval->eevee.gi_cubemap_resolution); + int vis_res = scene_eval->eevee.gi_visibility_resolution; + + stl->lookdev_lightcache = EEVEE_lightcache_create(1, 1, cube_res, vis_res, (int[3]){grid_res, grid_res, 1}); + + /* XXX: Fix memleak. TODO find out why. */ + MEM_SAFE_FREE(stl->lookdev_cube_mips); + + /* We do this to use a special light cache for lookdev. + * This lightcache needs to be per viewport. But we need to + * have correct freeing when the viewport is closed. So we + * need to reference all textures to the txl and the memblocks + * to the stl. */ + stl->lookdev_grid_data = stl->lookdev_lightcache->grid_data; + stl->lookdev_cube_data = stl->lookdev_lightcache->cube_data; + stl->lookdev_cube_mips = stl->lookdev_lightcache->cube_mips; + txl->lookdev_grid_tx = stl->lookdev_lightcache->grid_tx.tex; + txl->lookdev_cube_tx = stl->lookdev_lightcache->cube_tx.tex; + } + + stl->g_data->light_cache = stl->lookdev_lightcache; + + static float background_color[4]; + UI_GetThemeColor4fv(TH_HIGH_GRAD, background_color); + /* XXX: Really quick conversion to avoid washed out background. + * Needs to be addressed properly (color managed using ocio). */ + srgb_to_linearrgb_v4(background_color, background_color); + + *grp = DRW_shgroup_create(shader, pass); + axis_angle_to_mat3_single(stl->g_data->studiolight_matrix, 'Z', v3d->shading.studiolight_rot_z); + DRW_shgroup_uniform_mat3(*grp, "StudioLightMatrix", stl->g_data->studiolight_matrix); + DRW_shgroup_uniform_float(*grp, "backgroundAlpha", &stl->g_data->background_alpha, 1); + DRW_shgroup_uniform_vec3(*grp, "color", background_color, 1); + DRW_shgroup_call_add(*grp, geom, NULL); + if (!pinfo) { + /* Do not fadeout when doing probe rendering, only when drawing the background */ + DRW_shgroup_uniform_float(*grp, "studioLightBackground", &v3d->shading.studiolight_background, 1); + BKE_studiolight_ensure_flag(sl, STUDIOLIGHT_EQUIRECT_IRRADIANCE_GPUTEXTURE); + tex = sl->equirect_irradiance_gputexture; + } + else { + DRW_shgroup_uniform_float_copy(*grp, "studioLightBackground", 1.0f); + BKE_studiolight_ensure_flag(sl, STUDIOLIGHT_EQUIRECT_RADIANCE_GPUTEXTURE); + tex = sl->equirect_radiance_gputexture; + } + DRW_shgroup_uniform_texture(*grp, "image", tex); + + /* Do we need to recalc the lightprobes? */ + if (pinfo && + ((pinfo->studiolight_index != sl->index) || + (pinfo->studiolight_rot_z != v3d->shading.studiolight_rot_z))) + { + stl->lookdev_lightcache->flag |= LIGHTCACHE_UPDATE_WORLD; + pinfo->studiolight_index = sl->index; + pinfo->studiolight_rot_z = v3d->shading.studiolight_rot_z; + } + } + } +} + +void EEVEE_lookdev_draw_background(EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + EEVEE_EffectsInfo *effects = stl->effects; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + + const DRWContextState *draw_ctx = DRW_context_state_get(); + + if (psl->lookdev_pass && LOOK_DEV_OVERLAY_ENABLED(draw_ctx->v3d)) { + DRW_stats_group_start("Look Dev"); + CameraParams params; + BKE_camera_params_init(¶ms); + View3D *v3d = draw_ctx->v3d; + RegionView3D *rv3d = draw_ctx->rv3d; + ARegion *ar = draw_ctx->ar; + + const float *viewport_size = DRW_viewport_size_get(); + rcti rect; + ED_region_visible_rect(draw_ctx->ar, &rect); + + const float viewport_size_target[2] = { + viewport_size[0] / 4, + viewport_size[1] / 4, + }; + const int viewport_inset[2] = { + max_ii(viewport_size_target[0], 300), + max_ii(viewport_size_target[0], 300) / 2, /* intentionally use 'x' here for 'y' value. */ + }; + + /* minimum size for preview spheres viewport */ + const float aspect[2] = { + viewport_inset[0] / viewport_size_target[0], + viewport_inset[1] / viewport_size_target[1], + }; + + BKE_camera_params_from_view3d(¶ms, draw_ctx->depsgraph, v3d, rv3d); + params.is_ortho = true; + params.ortho_scale = 3.0f; + params.zoom = CAMERA_PARAM_ZOOM_INIT_PERSP; + params.offsetx = 0.0f; + params.offsety = 0.0f; + params.shiftx = 0.0f; + params.shifty = 0.0f; + params.clipsta = 0.001f; + params.clipend = 20.0f; + BKE_camera_params_compute_viewplane(¶ms, ar->winx, ar->winy, aspect[0], aspect[1]); + BKE_camera_params_compute_matrix(¶ms); + + EEVEE_CommonUniformBuffer *common = &sldata->common_data; + common->la_num_light = 0; + common->prb_num_planar = 0; + common->prb_num_render_cube = 1; + common->prb_num_render_grid = 1; + common->ao_dist = 0.0f; + common->ao_factor = 0.0f; + common->ao_settings = 0.0f; + DRW_uniformbuffer_update(sldata->common_ubo, common); + + /* override matrices */ + float winmat[4][4]; + float winmat_inv[4][4]; + copy_m4_m4(winmat, params.winmat); + invert_m4_m4(winmat_inv, winmat); + DRW_viewport_matrix_override_set(winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(winmat_inv, DRW_MAT_WININV); + float viewmat[4][4]; + DRW_viewport_matrix_get(viewmat, DRW_MAT_VIEW); + float persmat[4][4]; + float persmat_inv[4][4]; + mul_m4_m4m4(persmat, winmat, viewmat); + invert_m4_m4(persmat_inv, persmat); + DRW_viewport_matrix_override_set(persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(persmat_inv, DRW_MAT_PERSINV); + + GPUFrameBuffer *fb = effects->final_fb; + GPU_framebuffer_bind(fb); + GPU_framebuffer_viewport_set(fb, rect.xmax - viewport_inset[0], rect.ymin, viewport_inset[0], viewport_inset[1]); + DRW_draw_pass(psl->lookdev_pass); + + fb = dfbl->depth_only_fb; + GPU_framebuffer_bind(fb); + GPU_framebuffer_viewport_set(fb, rect.xmax - viewport_inset[0], rect.ymin, viewport_inset[0], viewport_inset[1]); + DRW_draw_pass(psl->lookdev_pass); + + DRW_viewport_matrix_override_unset_all(); + DRW_stats_group_end(); + } +} diff --git a/source/blender/draw/engines/eevee/eevee_lut.h b/source/blender/draw/engines/eevee/eevee_lut.h new file mode 100644 index 00000000000..da765b3e53a --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_lut.h @@ -0,0 +1,16926 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2005 Blender Foundation. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): Clement Foucault. + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file eevee_lut.h + * \ingroup gpu + */ + +#ifndef __EEVEE_LUT_H__ +#define __EEVEE_LUT_H__ + +static float ltc_mat_ggx[64 * 64 * 4] = { + 0.000200, -0.000000, 1.000000, -0.000000, 0.000504, -0.000000, 1.000000, -0.000000, 0.002016, + -0.000000, 1.000000, -0.000000, 0.004535, -0.000000, 1.000000, -0.000000, 0.008063, -0.000000, + 1.000000, -0.000000, 0.012598, -0.000000, 1.000000, -0.000000, 0.018141, -0.000000, 1.000000, + -0.000000, 0.024692, -0.000000, 1.000000, -0.000000, 0.032252, -0.000000, 1.000000, -0.000000, + 0.040821, -0.000000, 1.000000, -0.000000, 0.050400, -0.000000, 1.000000, -0.000000, 0.060989, + -0.000000, 1.000000, -0.000000, 0.072591, -0.000000, 1.000000, -0.000000, 0.085206, -0.000000, + 1.000000, -0.000000, 0.098836, -0.000000, 1.000000, -0.000000, 0.113483, -0.000000, 1.000000, + -0.000000, 0.129147, -0.000000, 1.000000, -0.000000, 0.145828, -0.000000, 1.000000, -0.000000, + 0.163499, -0.000000, 1.000000, -0.000000, 0.181972, -0.000000, 1.000000, -0.000000, 0.199498, + -0.000000, 1.000000, -0.000000, 0.220031, -0.000000, 1.000000, -0.000000, 0.241588, -0.000000, + 1.000000, -0.000000, 0.264120, -0.000000, 1.000000, -0.000000, 0.287521, -0.000000, 1.000000, + -0.000000, 0.311478, -0.000000, 1.000000, -0.000000, 0.335127, -0.000000, 1.000000, -0.000000, + 0.359811, -0.000000, 1.000000, -0.000000, 0.386446, -0.000000, 1.000000, -0.000000, 0.413161, + -0.000000, 1.000000, -0.000000, 0.439142, -0.000000, 1.000000, -0.000000, 0.467039, 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0.001243f, 0.001441f, 0.001703f, 0.002058f, 0.002573f, 0.003740f, 0.280029f, 0.362793f, + 0.385742f, 0.397217f, 0.404297f, 0.408936f, 0.000058f, 0.000038f, 0.000031f, 0.000027f, 0.000025f, 0.000026f, 0.000025f, 0.000024f, + 0.000024f, 0.000027f, 0.000030f, 0.000038f, 0.000032f, 0.000035f, 0.000040f, 0.000041f, 0.000044f, 0.000045f, 0.000045f, 0.000047f, + 0.000052f, 0.000058f, 0.000061f, 0.000059f, 0.000065f, 0.000067f, 0.000069f, 0.000073f, 0.000078f, 0.000083f, 0.000089f, 0.000091f, + 0.000099f, 0.000103f, 0.000106f, 0.000114f, 0.000124f, 0.000132f, 0.000141f, 0.000150f, 0.000158f, 0.000164f, 0.000180f, 0.000193f, + 0.000205f, 0.000225f, 0.000245f, 0.000267f, 0.000297f, 0.000329f, 0.000365f, 0.000416f, 0.000479f, 0.000563f, 0.000676f, 0.000839f, + 0.001088f, 0.001589f, 0.270264f, 0.353760f, 0.377197f, 0.390137f, 0.396973f, 0.402100f, 0.000030f, 0.000019f, 0.000016f, 0.000014f, + 0.000013f, 0.000012f, 0.000011f, 0.000011f, 0.000010f, 0.000010f, 0.000009f, 0.000009f, 0.000009f, 0.000008f, 0.000007f, 0.000009f, + 0.000009f, 0.000008f, 0.000009f, 0.000010f, 0.000011f, 0.000012f, 0.000012f, 0.000014f, 0.000014f, 0.000014f, 0.000015f, 0.000018f, + 0.000017f, 0.000017f, 0.000019f, 0.000020f, 0.000022f, 0.000022f, 0.000023f, 0.000026f, 0.000028f, 0.000027f, 0.000030f, 0.000032f, + 0.000035f, 0.000038f, 0.000040f, 0.000042f, 0.000045f, 0.000049f, 0.000055f, 0.000060f, 0.000065f, 0.000074f, 0.000078f, 0.000095f, + 0.000109f, 0.000129f, 0.000160f, 0.000205f, 0.000284f, 0.000452f, 0.259766f, 0.345703f, 0.369629f, 0.382812f, 0.390625f, 0.395264f, + 0.000000f, 0.000000f, 0.000000f, 0.000000f, 0.000000f, 0.000000f, 0.000000f, 0.000000f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, + 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, + 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, + 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000001f, 0.000002f, 0.000002f, 0.000002f, 0.000002f, 0.000002f, 0.000002f, + 0.000002f, 0.000003f, 0.000003f, 0.000004f, 0.000004f, 0.000005f, 0.000006f, 0.000009f, 0.000012f, 0.000026f, 0.249878f, 0.336182f, + 0.362061f, 0.374512f, 0.382080f, 0.387695f, + } +}; + +/* 4 different blue noise, one per channel */ +static float blue_noise[64 * 64][4] = { + {0.367188f, 0.855469f, 0.523438f, 0.375000f}, {0.242188f, 0.699219f, 0.164062f, 0.292969f}, + {0.828125f, 0.257812f, 0.449219f, 0.679688f}, {0.128906f, 0.523438f, 0.058594f, 0.164062f}, + {0.214844f, 0.648438f, 0.750000f, 0.492188f}, {0.535156f, 0.226562f, 0.492188f, 0.429688f}, + {0.050781f, 0.425781f, 0.886719f, 0.019531f}, {0.199219f, 0.785156f, 0.378906f, 0.984375f}, + {0.390625f, 0.039062f, 0.222656f, 0.777344f}, {0.574219f, 0.460938f, 0.687500f, 0.085938f}, + {0.757812f, 0.117188f, 0.968750f, 0.343750f}, {0.109375f, 0.398438f, 0.500000f, 0.871094f}, + {0.871094f, 0.796875f, 0.628906f, 0.132812f}, {0.289062f, 0.480469f, 0.851562f, 0.484375f}, + {0.519531f, 0.035156f, 0.234375f, 0.832031f}, {0.390625f, 0.558594f, 0.738281f, 0.636719f}, + {0.015625f, 0.648438f, 0.910156f, 0.507812f}, {0.199219f, 0.257812f, 0.640625f, 0.578125f}, + {0.359375f, 0.976562f, 0.855469f, 0.726562f}, {0.523438f, 0.445312f, 0.335938f, 0.304688f}, + {0.046875f, 0.296875f, 0.921875f, 0.687500f}, {0.476562f, 0.929688f, 0.777344f, 0.164062f}, + {0.726562f, 0.515625f, 0.398438f, 0.781250f}, {0.652344f, 0.156250f, 0.191406f, 0.015625f}, + {0.300781f, 0.695312f, 0.011719f, 0.417969f}, {0.433594f, 0.882812f, 0.738281f, 0.843750f}, + {0.890625f, 0.308594f, 0.523438f, 0.496094f}, {0.589844f, 0.730469f, 0.050781f, 0.886719f}, + {0.738281f, 0.539062f, 0.683594f, 0.640625f}, {0.421875f, 0.191406f, 0.265625f, 0.996094f}, + {0.609375f, 0.339844f, 0.617188f, 0.066406f}, {0.371094f, 0.398438f, 0.378906f, 0.898438f}, + {0.937500f, 0.578125f, 0.136719f, 0.136719f}, {0.453125f, 0.820312f, 0.664062f, 0.968750f}, + {0.828125f, 0.070312f, 0.316406f, 0.328125f}, {0.558594f, 0.714844f, 0.593750f, 0.714844f}, + {0.351562f, 0.781250f, 0.355469f, 0.804688f}, {0.203125f, 0.398438f, 0.214844f, 0.519531f}, + {0.785156f, 0.207031f, 0.398438f, 0.453125f}, {0.617188f, 0.289062f, 0.281250f, 0.257812f}, + {0.171875f, 0.609375f, 0.792969f, 0.027344f}, {0.539062f, 0.871094f, 0.007812f, 0.886719f}, + {0.019531f, 0.246094f, 0.226562f, 0.363281f}, {0.988281f, 0.582031f, 0.777344f, 0.054688f}, + {0.468750f, 0.933594f, 0.312500f, 0.246094f}, {0.218750f, 0.015625f, 0.851562f, 0.167969f}, + {0.566406f, 0.699219f, 0.519531f, 0.902344f}, {0.125000f, 0.507812f, 0.136719f, 0.386719f}, + {0.296875f, 0.812500f, 0.558594f, 0.203125f}, {0.402344f, 0.199219f, 0.058594f, 0.875000f}, + {0.898438f, 0.386719f, 0.664062f, 0.660156f}, {0.027344f, 0.078125f, 0.296875f, 0.453125f}, + {0.667969f, 0.828125f, 0.808594f, 0.171875f}, {0.257812f, 0.535156f, 0.464844f, 0.914062f}, + {0.597656f, 0.363281f, 0.886719f, 0.718750f}, {0.332031f, 0.042969f, 0.683594f, 0.003906f}, + {0.632812f, 0.480469f, 0.429688f, 0.425781f}, {0.226562f, 0.910156f, 0.566406f, 0.558594f}, + {0.496094f, 0.062500f, 0.863281f, 0.226562f}, {0.105469f, 0.976562f, 0.707031f, 0.941406f}, + {0.394531f, 0.203125f, 0.285156f, 0.277344f}, {0.003906f, 0.804688f, 0.781250f, 0.050781f}, + {0.210938f, 0.289062f, 0.117188f, 0.601562f}, {0.972656f, 0.179688f, 0.589844f, 0.144531f}, + {0.152344f, 0.359375f, 0.730469f, 0.449219f}, {0.765625f, 0.105469f, 0.292969f, 0.101562f}, + {0.519531f, 0.812500f, 0.617188f, 0.976562f}, {0.988281f, 0.960938f, 0.902344f, 0.054688f}, + {0.457031f, 0.738281f, 0.335938f, 0.875000f}, {0.871094f, 0.121094f, 0.195312f, 0.210938f}, + {0.781250f, 0.296875f, 0.539062f, 0.585938f}, {0.636719f, 0.667969f, 0.621094f, 0.328125f}, + {0.324219f, 0.929688f, 0.855469f, 0.148438f}, {0.984375f, 0.718750f, 0.421875f, 0.824219f}, + {0.500000f, 0.308594f, 0.757812f, 0.699219f}, {0.664062f, 0.214844f, 0.269531f, 0.558594f}, + {0.414062f, 0.984375f, 0.074219f, 0.757812f}, {0.589844f, 0.339844f, 0.925781f, 0.273438f}, + {0.089844f, 0.847656f, 0.316406f, 0.398438f}, {0.695312f, 0.921875f, 0.460938f, 0.890625f}, + {0.894531f, 0.093750f, 0.113281f, 0.347656f}, {0.562500f, 0.386719f, 0.289062f, 0.964844f}, + {0.121094f, 0.820312f, 0.003906f, 0.214844f}, {0.765625f, 0.187500f, 0.710938f, 0.914062f}, + {0.878906f, 0.773438f, 0.445312f, 0.078125f}, {0.218750f, 0.117188f, 0.613281f, 0.617188f}, + {0.085938f, 0.652344f, 0.996094f, 0.339844f}, {0.863281f, 0.359375f, 0.496094f, 0.531250f}, + {0.148438f, 0.437500f, 0.320312f, 0.695312f}, {0.503906f, 0.613281f, 0.792969f, 0.082031f}, + {0.097656f, 0.109375f, 0.960938f, 0.238281f}, {0.246094f, 0.914062f, 0.414062f, 0.328125f}, + {0.011719f, 0.648438f, 0.828125f, 0.738281f}, {0.980469f, 0.457031f, 0.343750f, 0.117188f}, + {0.140625f, 0.937500f, 0.976562f, 0.601562f}, {0.234375f, 0.867188f, 0.574219f, 0.230469f}, + {0.542969f, 0.519531f, 0.902344f, 0.402344f}, {0.027344f, 0.300781f, 0.253906f, 0.503906f}, + {0.757812f, 0.964844f, 0.949219f, 0.058594f}, {0.152344f, 0.234375f, 0.039062f, 0.925781f}, + {0.687500f, 0.628906f, 0.492188f, 0.386719f}, {0.929688f, 0.546875f, 0.667969f, 0.109375f}, + {0.269531f, 0.136719f, 0.964844f, 0.617188f}, {0.320312f, 0.464844f, 0.542969f, 0.972656f}, + {0.960938f, 0.960938f, 0.171875f, 0.093750f}, {0.355469f, 0.523438f, 0.429688f, 0.765625f}, + {0.246094f, 0.328125f, 0.992188f, 0.496094f}, {0.648438f, 0.074219f, 0.097656f, 0.605469f}, + {0.144531f, 0.648438f, 0.476562f, 0.808594f}, {0.855469f, 0.832031f, 0.195312f, 0.546875f}, + {0.925781f, 0.414062f, 0.960938f, 0.675781f}, {0.000000f, 0.113281f, 0.746094f, 0.835938f}, + {0.828125f, 0.324219f, 0.613281f, 0.500000f}, {0.699219f, 0.738281f, 0.332031f, 0.125000f}, + {0.542969f, 0.906250f, 0.898438f, 0.250000f}, {0.105469f, 0.632812f, 0.511719f, 0.062500f}, + {0.433594f, 0.273438f, 0.097656f, 0.816406f}, {0.511719f, 0.707031f, 0.593750f, 0.632812f}, + {0.179688f, 0.980469f, 0.367188f, 0.335938f}, {0.882812f, 0.113281f, 0.031250f, 0.980469f}, + {0.410156f, 0.656250f, 0.253906f, 0.675781f}, {0.039062f, 0.300781f, 0.785156f, 0.800781f}, + {0.695312f, 0.382812f, 0.386719f, 0.156250f}, {0.847656f, 0.457031f, 0.000000f, 0.847656f}, + {0.945312f, 0.542969f, 0.664062f, 0.683594f}, {0.730469f, 0.707031f, 0.238281f, 0.535156f}, + {0.472656f, 0.921875f, 0.871094f, 0.910156f}, {0.867188f, 0.601562f, 0.031250f, 0.812500f}, + {0.632812f, 0.769531f, 0.925781f, 0.625000f}, {0.433594f, 0.558594f, 0.078125f, 0.851562f}, + {0.015625f, 0.187500f, 0.792969f, 0.515625f}, {0.343750f, 0.386719f, 0.562500f, 0.773438f}, + {0.679688f, 0.035156f, 0.121094f, 0.347656f}, {0.300781f, 0.582031f, 0.703125f, 0.660156f}, + {0.152344f, 0.878906f, 0.929688f, 0.902344f}, {0.433594f, 0.507812f, 0.093750f, 0.460938f}, + {0.714844f, 0.171875f, 0.042969f, 0.531250f}, {0.828125f, 0.550781f, 0.312500f, 0.945312f}, + {0.011719f, 0.894531f, 0.136719f, 0.417969f}, {0.257812f, 0.046875f, 0.562500f, 0.226562f}, + {0.187500f, 0.601562f, 0.800781f, 0.929688f}, {0.949219f, 0.128906f, 0.437500f, 0.613281f}, + {0.816406f, 0.277344f, 0.054688f, 0.035156f}, {0.226562f, 0.425781f, 0.542969f, 0.183594f}, + {0.628906f, 0.750000f, 0.984375f, 0.113281f}, {0.839844f, 0.003906f, 0.792969f, 0.796875f}, + {0.269531f, 0.324219f, 0.496094f, 0.003906f}, {0.683594f, 0.601562f, 0.574219f, 0.546875f}, + {0.957031f, 0.703125f, 0.164062f, 0.378906f}, {0.605469f, 0.398438f, 0.078125f, 0.855469f}, + {0.449219f, 0.250000f, 0.257812f, 0.988281f}, {0.367188f, 0.964844f, 0.859375f, 0.195312f}, + {0.820312f, 0.007812f, 0.125000f, 0.753906f}, {0.625000f, 0.832031f, 0.453125f, 0.609375f}, + {0.929688f, 0.230469f, 0.246094f, 0.925781f}, {0.394531f, 0.375000f, 0.097656f, 0.550781f}, + {0.558594f, 0.148438f, 0.183594f, 0.191406f}, {0.480469f, 0.796875f, 0.488281f, 0.785156f}, + {0.714844f, 0.250000f, 0.011719f, 0.296875f}, {0.660156f, 0.085938f, 0.804688f, 0.691406f}, + {0.890625f, 0.695312f, 0.101562f, 0.855469f}, {0.320312f, 0.195312f, 0.441406f, 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0.488281f, 0.199219f, 0.957031f}, {0.300781f, 0.558594f, 0.835938f, 0.816406f}, + {0.437500f, 0.023438f, 0.957031f, 0.214844f}, {0.933594f, 0.687500f, 0.527344f, 0.859375f}, + {0.269531f, 0.800781f, 0.179688f, 0.511719f}, {0.039062f, 0.222656f, 0.871094f, 0.921875f}, + {0.894531f, 0.062500f, 0.628906f, 0.074219f}, {0.746094f, 0.546875f, 0.277344f, 0.820312f}, + {0.863281f, 0.343750f, 0.589844f, 0.265625f}, {0.335938f, 0.855469f, 0.105469f, 0.140625f}, + {0.078125f, 0.109375f, 0.707031f, 0.515625f}, {0.515625f, 0.722656f, 0.617188f, 0.226562f}, + {0.292969f, 0.886719f, 0.878906f, 0.027344f}, {0.214844f, 0.003906f, 0.937500f, 0.699219f}, + {0.554688f, 0.601562f, 0.757812f, 0.402344f}, {0.390625f, 0.324219f, 0.281250f, 0.207031f}, + {0.304688f, 0.128906f, 0.039062f, 0.957031f}, {0.960938f, 0.500000f, 0.808594f, 0.367188f}, + {0.265625f, 0.031250f, 0.406250f, 0.808594f}, {0.054688f, 0.925781f, 0.613281f, 0.871094f}, + {0.195312f, 0.429688f, 0.558594f, 0.539062f}, {0.835938f, 0.136719f, 0.828125f, 0.121094f}, + {0.699219f, 0.242188f, 0.015625f, 0.660156f}, {0.035156f, 0.464844f, 0.480469f, 0.835938f}, + {0.312500f, 0.554688f, 0.320312f, 0.003906f}, {0.738281f, 0.308594f, 0.093750f, 0.785156f}, + {0.484375f, 0.621094f, 0.406250f, 0.890625f}, {0.375000f, 0.160156f, 0.957031f, 0.386719f}, + {0.093750f, 0.882812f, 0.355469f, 0.125000f}, {0.410156f, 0.015625f, 0.644531f, 0.941406f}, + {0.593750f, 0.597656f, 0.722656f, 0.542969f}, {0.492188f, 0.531250f, 0.984375f, 0.734375f}, + {0.683594f, 0.265625f, 0.464844f, 0.398438f}, {0.835938f, 0.968750f, 0.035156f, 0.242188f}, + {0.945312f, 0.761719f, 0.328125f, 0.453125f}, {0.625000f, 0.246094f, 0.730469f, 0.910156f}, + {0.328125f, 0.078125f, 0.937500f, 0.593750f}, {0.902344f, 0.945312f, 0.015625f, 0.425781f}, + {0.171875f, 0.433594f, 0.488281f, 0.687500f}, {0.250000f, 0.312500f, 0.804688f, 0.781250f}, + {0.609375f, 0.781250f, 0.093750f, 0.941406f}, {0.312500f, 0.097656f, 0.687500f, 0.667969f}, + {0.710938f, 0.160156f, 0.425781f, 0.031250f}, {0.164062f, 0.355469f, 0.945312f, 0.878906f}, + {0.968750f, 0.628906f, 0.738281f, 0.261719f}, {0.839844f, 0.218750f, 0.296875f, 0.058594f}, + {0.128906f, 0.902344f, 0.875000f, 0.933594f}, {0.035156f, 0.726562f, 0.113281f, 0.207031f}, + {0.996094f, 0.335938f, 0.625000f, 0.464844f}, {0.531250f, 0.984375f, 0.277344f, 0.660156f}, + {0.066406f, 0.589844f, 0.148438f, 0.367188f}, {0.363281f, 0.242188f, 0.867188f, 0.707031f}, + {0.945312f, 0.953125f, 0.437500f, 0.527344f}, {0.042969f, 0.292969f, 0.535156f, 0.828125f}, + {0.492188f, 0.617188f, 0.175781f, 0.730469f}, {0.332031f, 0.785156f, 0.886719f, 0.351562f}, + {0.875000f, 0.984375f, 0.226562f, 0.179688f}, {0.062500f, 0.269531f, 0.839844f, 0.039062f}, + {0.292969f, 0.875000f, 0.960938f, 0.421875f}, {0.917969f, 0.175781f, 0.167969f, 0.867188f}, + {0.714844f, 0.324219f, 0.753906f, 0.000000f}, {0.593750f, 0.582031f, 0.523438f, 0.671875f}, + {0.421875f, 0.089844f, 0.117188f, 0.910156f}, {0.136719f, 0.652344f, 0.730469f, 0.402344f}, + {0.750000f, 0.363281f, 0.335938f, 0.179688f}, {0.906250f, 0.824219f, 0.660156f, 0.550781f}, + {0.199219f, 0.976562f, 0.128906f, 0.128906f}, {0.101562f, 0.125000f, 0.714844f, 0.664062f}, + {0.800781f, 0.378906f, 0.257812f, 0.296875f}, {0.515625f, 0.890625f, 0.027344f, 0.773438f}, + {0.414062f, 0.605469f, 0.082031f, 0.351562f}, {0.070312f, 0.765625f, 0.804688f, 0.585938f}, + {0.187500f, 0.433594f, 0.910156f, 0.968750f}, {0.796875f, 0.031250f, 0.468750f, 0.726562f}, + {0.457031f, 0.589844f, 0.156250f, 0.410156f}, {0.160156f, 0.312500f, 0.257812f, 0.949219f}, + {0.718750f, 0.785156f, 0.027344f, 0.363281f}, {0.773438f, 0.210938f, 0.554688f, 0.863281f}, + {0.476562f, 0.683594f, 0.335938f, 0.488281f}, {0.007812f, 0.765625f, 0.839844f, 0.769531f}, + {0.707031f, 0.859375f, 0.488281f, 0.605469f}, {0.445312f, 0.406250f, 0.230469f, 0.082031f}, + {0.566406f, 0.675781f, 0.746094f, 0.464844f}, {0.757812f, 0.582031f, 0.957031f, 0.023438f}, + {0.925781f, 0.843750f, 0.066406f, 0.183594f}, {0.281250f, 0.367188f, 0.429688f, 0.976562f}, + {0.125000f, 0.957031f, 0.644531f, 0.324219f}, {0.421875f, 0.746094f, 0.757812f, 0.214844f}, + {0.675781f, 0.410156f, 0.976562f, 0.933594f}, {0.074219f, 0.914062f, 0.851562f, 0.558594f}, + {0.617188f, 0.070312f, 0.667969f, 0.238281f}, {0.910156f, 0.457031f, 0.246094f, 0.742188f}, + {0.285156f, 0.335938f, 0.824219f, 0.636719f}, {0.722656f, 0.832031f, 0.007812f, 0.828125f}, + {0.816406f, 0.949219f, 0.289062f, 0.273438f}, {0.925781f, 0.152344f, 0.148438f, 0.675781f}, + {0.085938f, 0.359375f, 0.789062f, 0.187500f}, {0.277344f, 0.640625f, 0.585938f, 0.507812f}, + {0.164062f, 0.867188f, 0.105469f, 0.640625f}, {0.457031f, 0.570312f, 0.183594f, 0.050781f}, + {0.789062f, 0.675781f, 0.371094f, 0.203125f}, {0.050781f, 0.164062f, 0.675781f, 0.996094f}, + {0.726562f, 0.718750f, 0.152344f, 0.316406f}, {0.992188f, 0.210938f, 0.578125f, 0.066406f}, + {0.464844f, 0.894531f, 0.386719f, 0.242188f}, {0.792969f, 0.500000f, 0.203125f, 0.140625f}, + {0.925781f, 0.687500f, 0.527344f, 0.414062f}, {0.644531f, 0.062500f, 0.132812f, 0.824219f}, + {0.289062f, 0.847656f, 0.234375f, 0.492188f}, {0.390625f, 0.570312f, 0.054688f, 0.394531f}, + {0.554688f, 0.042969f, 0.546875f, 0.890625f}, {0.917969f, 0.796875f, 0.695312f, 0.589844f}, + {0.203125f, 0.207031f, 0.839844f, 0.273438f}, {0.773438f, 0.484375f, 0.355469f, 0.960938f}, + {0.699219f, 0.035156f, 0.593750f, 0.152344f}, {0.171875f, 0.410156f, 0.218750f, 0.050781f}, + {0.289062f, 0.824219f, 0.921875f, 0.406250f}, {0.851562f, 0.078125f, 0.765625f, 0.261719f}, + {0.781250f, 0.703125f, 0.066406f, 0.457031f}, {0.105469f, 0.000000f, 0.460938f, 0.546875f}, + {0.695312f, 0.140625f, 0.734375f, 0.792969f}, {0.187500f, 0.660156f, 0.515625f, 0.632812f}, + {0.636719f, 0.433594f, 0.085938f, 0.257812f}, {0.402344f, 0.500000f, 0.425781f, 0.562500f}, + {0.003906f, 0.019531f, 0.890625f, 0.214844f}, {0.878906f, 0.953125f, 0.816406f, 0.156250f}, + {0.503906f, 0.847656f, 0.058594f, 0.835938f}, {0.062500f, 0.746094f, 0.617188f, 0.738281f}, + {0.839844f, 0.058594f, 0.902344f, 0.312500f}, {0.691406f, 0.171875f, 0.496094f, 0.640625f}, + {0.390625f, 0.417969f, 0.378906f, 0.433594f}, {0.593750f, 0.742188f, 0.578125f, 0.945312f}, + {0.734375f, 0.484375f, 0.917969f, 0.722656f}, {0.316406f, 0.289062f, 0.667969f, 0.113281f}, + {0.675781f, 0.164062f, 0.429688f, 0.460938f}, {0.972656f, 0.984375f, 0.371094f, 0.628906f}, + {0.628906f, 0.257812f, 0.218750f, 0.015625f}, {0.242188f, 0.656250f, 0.773438f, 0.320312f}, + {0.589844f, 0.957031f, 0.984375f, 0.777344f}, {0.957031f, 0.492188f, 0.402344f, 0.550781f}, + {0.359375f, 0.144531f, 0.726562f, 0.105469f}, {0.859375f, 0.425781f, 0.203125f, 0.582031f}, + {0.113281f, 0.921875f, 0.128906f, 0.261719f}, {0.933594f, 0.253906f, 0.628906f, 0.144531f}, + {0.812500f, 0.570312f, 0.992188f, 0.890625f}, {0.148438f, 0.179688f, 0.093750f, 0.308594f}, + {0.894531f, 0.734375f, 0.160156f, 0.734375f}, {0.339844f, 0.269531f, 0.343750f, 0.628906f}, + {0.621094f, 0.089844f, 0.500000f, 0.394531f}, {0.523438f, 0.644531f, 0.906250f, 0.773438f}, + {0.796875f, 0.507812f, 0.203125f, 0.480469f}, {0.582031f, 0.042969f, 0.367188f, 0.710938f}, +}; + +#endif /* __EEVEE_LUT_H__ */ diff --git a/source/blender/draw/engines/eevee/eevee_materials.c b/source/blender/draw/engines/eevee/eevee_materials.c new file mode 100644 index 00000000000..6736d4c4110 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_materials.c @@ -0,0 +1,1811 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_materials.c + * \ingroup draw_engine + */ + +#include "DRW_render.h" + +#include "BLI_dynstr.h" +#include "BLI_ghash.h" +#include "BLI_alloca.h" +#include "BLI_rand.h" +#include "BLI_string_utils.h" + +#include "BKE_particle.h" +#include "BKE_paint.h" +#include "BKE_pbvh.h" +#include "BKE_studiolight.h" + +#include "DNA_world_types.h" +#include "DNA_modifier_types.h" +#include "DNA_view3d_types.h" + +#include "GPU_material.h" + +#include "eevee_engine.h" +#include "eevee_lut.h" +#include "eevee_private.h" + +/* *********** STATIC *********** */ +static struct { + char *frag_shader_lib; + char *vert_shader_str; + char *volume_shader_lib; + + struct GPUShader *default_prepass_sh; + struct GPUShader *default_prepass_clip_sh; + struct GPUShader *default_hair_prepass_sh; + struct GPUShader *default_hair_prepass_clip_sh; + struct GPUShader *default_lit[VAR_MAT_MAX]; + struct GPUShader *default_background; + struct GPUShader *update_noise_sh; + + /* 64*64 array texture containing all LUTs and other utilitarian arrays. + * Packing enables us to same precious textures slots. */ + struct GPUTexture *util_tex; + struct GPUTexture *noise_tex; + + struct GPUUniformBuffer *dummy_sss_profile; + + uint sss_count; + + float alpha_hash_offset; + float alpha_hash_scale; + float noise_offsets[3]; +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_lamps_lib_glsl[]; +extern char datatoc_lightprobe_lib_glsl[]; +extern char datatoc_ambient_occlusion_lib_glsl[]; +extern char datatoc_prepass_frag_glsl[]; +extern char datatoc_prepass_vert_glsl[]; +extern char datatoc_default_frag_glsl[]; +extern char datatoc_default_world_frag_glsl[]; +extern char datatoc_ltc_lib_glsl[]; +extern char datatoc_bsdf_lut_frag_glsl[]; +extern char datatoc_btdf_lut_frag_glsl[]; +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_bsdf_sampling_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_common_hair_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_irradiance_lib_glsl[]; +extern char datatoc_octahedron_lib_glsl[]; +extern char datatoc_lit_surface_frag_glsl[]; +extern char datatoc_lit_surface_vert_glsl[]; +extern char datatoc_raytrace_lib_glsl[]; +extern char datatoc_ssr_lib_glsl[]; +extern char datatoc_shadow_vert_glsl[]; +extern char datatoc_lightprobe_geom_glsl[]; +extern char datatoc_lightprobe_vert_glsl[]; +extern char datatoc_background_vert_glsl[]; +extern char datatoc_update_noise_frag_glsl[]; +extern char datatoc_volumetric_vert_glsl[]; +extern char datatoc_volumetric_geom_glsl[]; +extern char datatoc_volumetric_frag_glsl[]; +extern char datatoc_volumetric_lib_glsl[]; + +extern char datatoc_gpu_shader_uniform_color_frag_glsl[]; + +extern Material defmaterial; +extern GlobalsUboStorage ts; + +/* *********** FUNCTIONS *********** */ + +#if 0 /* Used only to generate the LUT values */ +static struct GPUTexture *create_ggx_lut_texture(int UNUSED(w), int UNUSED(h)) +{ + struct GPUTexture *tex; + struct GPUFrameBuffer *fb = NULL; + static float samples_len = 8192.0f; + static float inv_samples_len = 1.0f / 8192.0f; + + char *lib_str = BLI_string_joinN( + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl); + + struct GPUShader *sh = DRW_shader_create_with_lib( + datatoc_lightprobe_vert_glsl, datatoc_lightprobe_geom_glsl, datatoc_bsdf_lut_frag_glsl, lib_str, + "#define HAMMERSLEY_SIZE 8192\n" + "#define BRDF_LUT_SIZE 64\n" + "#define NOISE_SIZE 64\n"); + + DRWPass *pass = DRW_pass_create("LightProbe Filtering", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(sh, pass); + DRW_shgroup_uniform_float(grp, "sampleCount", &samples_len, 1); + DRW_shgroup_uniform_float(grp, "invSampleCount", &inv_samples_len, 1); + DRW_shgroup_uniform_texture(grp, "texHammersley", e_data.hammersley); + DRW_shgroup_uniform_texture(grp, "texJitter", e_data.jitter); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRW_shgroup_call_add(grp, geom, NULL); + + float *texels = MEM_mallocN(sizeof(float[2]) * w * h, "lut"); + + tex = DRW_texture_create_2D(w, h, GPU_RG16F, DRW_TEX_FILTER, (float *)texels); + + DRWFboTexture tex_filter = {&tex, GPU_RG16F, DRW_TEX_FILTER}; + GPU_framebuffer_init(&fb, &draw_engine_eevee_type, w, h, &tex_filter, 1); + + GPU_framebuffer_bind(fb); + DRW_draw_pass(pass); + + float *data = MEM_mallocN(sizeof(float[3]) * w * h, "lut"); + glReadBuffer(GL_COLOR_ATTACHMENT0); + glReadPixels(0, 0, w, h, GL_RGB, GL_FLOAT, data); + + printf("{"); + for (int i = 0; i < w*h * 3; i+=3) { + printf("%ff, %ff, ", data[i], data[i+1]); i+=3; + printf("%ff, %ff, ", data[i], data[i+1]); i+=3; + printf("%ff, %ff, ", data[i], data[i+1]); i+=3; + printf("%ff, %ff, \n", data[i], data[i+1]); + } + printf("}"); + + MEM_freeN(texels); + MEM_freeN(data); + + return tex; +} + +static struct GPUTexture *create_ggx_refraction_lut_texture(int w, int h) +{ + struct GPUTexture *tex; + struct GPUTexture *hammersley = create_hammersley_sample_texture(8192); + struct GPUFrameBuffer *fb = NULL; + static float samples_len = 8192.0f; + static float a2 = 0.0f; + static float inv_samples_len = 1.0f / 8192.0f; + + char *frag_str = BLI_string_joinN( + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl, + datatoc_btdf_lut_frag_glsl); + + struct GPUShader *sh = DRW_shader_create_fullscreen(frag_str, + "#define HAMMERSLEY_SIZE 8192\n" + "#define BRDF_LUT_SIZE 64\n" + "#define NOISE_SIZE 64\n" + "#define LUT_SIZE 64\n"); + + MEM_freeN(frag_str); + + DRWPass *pass = DRW_pass_create("LightProbe Filtering", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(sh, pass); + DRW_shgroup_uniform_float(grp, "a2", &a2, 1); + DRW_shgroup_uniform_float(grp, "sampleCount", &samples_len, 1); + DRW_shgroup_uniform_float(grp, "invSampleCount", &inv_samples_len, 1); + DRW_shgroup_uniform_texture(grp, "texHammersley", hammersley); + DRW_shgroup_uniform_texture(grp, "utilTex", e_data.util_tex); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRW_shgroup_call_add(grp, geom, NULL); + + float *texels = MEM_mallocN(sizeof(float[2]) * w * h, "lut"); + + tex = DRW_texture_create_2D(w, h, GPU_R16F, DRW_TEX_FILTER, (float *)texels); + + DRWFboTexture tex_filter = {&tex, GPU_R16F, DRW_TEX_FILTER}; + GPU_framebuffer_init(&fb, &draw_engine_eevee_type, w, h, &tex_filter, 1); + + GPU_framebuffer_bind(fb); + + float *data = MEM_mallocN(sizeof(float[3]) * w * h, "lut"); + + float inc = 1.0f / 31.0f; + float roughness = 1e-8f - inc; + FILE *f = BLI_fopen("btdf_split_sum_ggx.h", "w"); + fprintf(f, "static float btdf_split_sum_ggx[32][64 * 64] = {\n"); + do { + roughness += inc; + CLAMP(roughness, 1e-4f, 1.0f); + a2 = powf(roughness, 4.0f); + DRW_draw_pass(pass); + + GPU_framebuffer_read_data(0, 0, w, h, 3, 0, data); + +#if 1 + fprintf(f, "\t{\n\t\t"); + for (int i = 0; i < w*h * 3; i+=3) { + fprintf(f, "%ff,", data[i]); + if (((i/3)+1) % 12 == 0) fprintf(f, "\n\t\t"); + else fprintf(f, " "); + } + fprintf(f, "\n\t},\n"); +#else + for (int i = 0; i < w*h * 3; i+=3) { + if (data[i] < 0.01) printf(" "); + else if (data[i] < 0.3) printf("."); + else if (data[i] < 0.6) printf("+"); + else if (data[i] < 0.9) printf("%%"); + else printf("#"); + if ((i/3+1) % 64 == 0) printf("\n"); + } +#endif + + } while (roughness < 1.0f); + fprintf(f, "\n};\n"); + + fclose(f); + + MEM_freeN(texels); + MEM_freeN(data); + + return tex; +} +#endif +/* XXX TODO define all shared resources in a shared place without duplication */ +struct GPUTexture *EEVEE_materials_get_util_tex(void) +{ + return e_data.util_tex; +} + +static int eevee_material_shadow_option(int shadow_method) +{ + switch (shadow_method) { + case SHADOW_ESM: return VAR_MAT_ESM; + case SHADOW_VSM: return VAR_MAT_VSM; + default: + BLI_assert(!"Incorrect Shadow Method"); + break; + } + + return 0; +} + +static char *eevee_get_defines(int options) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + BLI_dynstr_appendf(ds, SHADER_DEFINES); + + if ((options & VAR_MAT_MESH) != 0) { + BLI_dynstr_appendf(ds, "#define MESH_SHADER\n"); + } + if ((options & VAR_MAT_HAIR) != 0) { + BLI_dynstr_appendf(ds, "#define HAIR_SHADER\n"); + } + if ((options & VAR_MAT_PROBE) != 0) { + BLI_dynstr_appendf(ds, "#define PROBE_CAPTURE\n"); + } + if ((options & VAR_MAT_FLAT) != 0) { + BLI_dynstr_appendf(ds, "#define USE_FLAT_NORMAL\n"); + } + if ((options & VAR_MAT_CLIP) != 0) { + BLI_dynstr_appendf(ds, "#define USE_ALPHA_CLIP\n"); + } + if ((options & VAR_MAT_SHADOW) != 0) { + BLI_dynstr_appendf(ds, "#define SHADOW_SHADER\n"); + } + if ((options & VAR_MAT_HASH) != 0) { + BLI_dynstr_appendf(ds, "#define USE_ALPHA_HASH\n"); + } + if ((options & VAR_MAT_BLEND) != 0) { + BLI_dynstr_appendf(ds, "#define USE_ALPHA_BLEND\n"); + } + if ((options & VAR_MAT_MULT) != 0) { + BLI_dynstr_appendf(ds, "#define USE_MULTIPLY\n"); + } + if ((options & VAR_MAT_REFRACT) != 0) { + BLI_dynstr_appendf(ds, "#define USE_REFRACTION\n"); + } + if ((options & VAR_MAT_SSS) != 0) { + BLI_dynstr_appendf(ds, "#define USE_SSS\n"); + } + if ((options & VAR_MAT_SSSALBED) != 0) { + BLI_dynstr_appendf(ds, "#define USE_SSS_ALBEDO\n"); + } + if ((options & VAR_MAT_TRANSLUC) != 0) { + BLI_dynstr_appendf(ds, "#define USE_TRANSLUCENCY\n"); + } + if ((options & VAR_MAT_VSM) != 0) { + BLI_dynstr_appendf(ds, "#define SHADOW_VSM\n"); + } + if ((options & VAR_MAT_ESM) != 0) { + BLI_dynstr_appendf(ds, "#define SHADOW_ESM\n"); + } + if (((options & VAR_MAT_VOLUME) != 0) && ((options & VAR_MAT_BLEND) != 0)) { + BLI_dynstr_appendf(ds, "#define USE_ALPHA_BLEND_VOLUMETRICS\n"); + } + if ((options & VAR_MAT_LOOKDEV) != 0) { + BLI_dynstr_appendf(ds, "#define LOOKDEV\n"); + } + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + + return str; +} + +static char *eevee_get_volume_defines(int options) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + BLI_dynstr_appendf(ds, SHADER_DEFINES); + BLI_dynstr_appendf(ds, "#define VOLUMETRICS\n"); + + if ((options & VAR_MAT_VOLUME) != 0) { + BLI_dynstr_appendf(ds, "#define MESH_SHADER\n"); + } + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + + return str; +} + +/** + * ssr_id can be null to disable ssr contribution. + **/ +static void add_standard_uniforms( + DRWShadingGroup *shgrp, EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + int *ssr_id, float *refract_depth, + bool use_diffuse, bool use_glossy, bool use_refract, + bool use_ssrefraction, bool use_alpha_blend) +{ + LightCache *lcache = vedata->stl->g_data->light_cache; + + if (ssr_id == NULL) { + static int no_ssr = -1.0f; + ssr_id = &no_ssr; + } + + DRW_shgroup_uniform_block(shgrp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(shgrp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(shgrp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(shgrp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(shgrp, "shadow_block", sldata->shadow_ubo); + DRW_shgroup_uniform_block(shgrp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_block(shgrp, "clip_block", sldata->clip_ubo); + + if (use_diffuse || use_glossy || use_refract) { + DRW_shgroup_uniform_texture(shgrp, "utilTex", e_data.util_tex); + DRW_shgroup_uniform_texture_ref(shgrp, "shadowCubeTexture", &sldata->shadow_cube_pool); + DRW_shgroup_uniform_texture_ref(shgrp, "shadowCascadeTexture", &sldata->shadow_cascade_pool); + DRW_shgroup_uniform_texture_ref(shgrp, "maxzBuffer", &vedata->txl->maxzbuffer); + } + if ((use_diffuse || use_glossy) && !use_ssrefraction) { + if ((vedata->stl->effects->enabled_effects & EFFECT_GTAO) != 0) { + DRW_shgroup_uniform_texture_ref(shgrp, "horizonBuffer", &vedata->stl->effects->gtao_horizons); + } + else { + /* Use maxzbuffer as fallback to avoid sampling problem on certain platform, see: T52593 */ + DRW_shgroup_uniform_texture_ref(shgrp, "horizonBuffer", &vedata->txl->maxzbuffer); + } + } + if (use_diffuse) { + DRW_shgroup_uniform_texture_ref(shgrp, "irradianceGrid", &lcache->grid_tx.tex); + } + if (use_glossy || use_refract) { + DRW_shgroup_uniform_texture_ref(shgrp, "probeCubes", &lcache->cube_tx.tex); + } + if (use_glossy) { + DRW_shgroup_uniform_texture_ref(shgrp, "probePlanars", &vedata->txl->planar_pool); + DRW_shgroup_uniform_int(shgrp, "outputSsrId", ssr_id, 1); + } + if (use_refract) { + DRW_shgroup_uniform_float_copy(shgrp, "refractionDepth", (refract_depth) ? *refract_depth : 0.0 ); + if (use_ssrefraction) { + DRW_shgroup_uniform_texture_ref(shgrp, "colorBuffer", &vedata->txl->refract_color); + } + } + + if ((vedata->stl->effects->enabled_effects & EFFECT_VOLUMETRIC) != 0 && + use_alpha_blend) + { + /* Do not use history buffers as they already have been swapped */ + DRW_shgroup_uniform_texture_ref(shgrp, "inScattering", &vedata->txl->volume_scatter); + DRW_shgroup_uniform_texture_ref(shgrp, "inTransmittance", &vedata->txl->volume_transmittance); + } +} + +static void create_default_shader(int options) +{ + char *frag_str = BLI_string_joinN( + e_data.frag_shader_lib, + datatoc_default_frag_glsl); + + char *defines = eevee_get_defines(options); + + e_data.default_lit[options] = DRW_shader_create(e_data.vert_shader_str, NULL, frag_str, defines); + + MEM_freeN(defines); + MEM_freeN(frag_str); +} + +static void eevee_init_dummys(void) +{ + e_data.dummy_sss_profile = GPU_material_create_sss_profile_ubo(); +} + +static void eevee_init_noise_texture(void) +{ + e_data.noise_tex = DRW_texture_create_2D(64, 64, GPU_RGBA16F, 0, (float *)blue_noise); +} + +static void eevee_init_util_texture(void) +{ + const int layers = 3 + 16; + float (*texels)[4] = MEM_mallocN(sizeof(float[4]) * 64 * 64 * layers, "utils texels"); + float (*texels_layer)[4] = texels; + + /* Copy ltc_mat_ggx into 1st layer */ + memcpy(texels_layer, ltc_mat_ggx, sizeof(float[4]) * 64 * 64); + texels_layer += 64 * 64; + + /* Copy bsdf_split_sum_ggx into 2nd layer red and green channels. + Copy ltc_mag_ggx into 2nd layer blue channel. */ + for (int i = 0; i < 64 * 64; i++) { + texels_layer[i][0] = bsdf_split_sum_ggx[i * 2 + 0]; + texels_layer[i][1] = bsdf_split_sum_ggx[i * 2 + 1]; + texels_layer[i][2] = ltc_mag_ggx[i]; + texels_layer[i][3] = ltc_disk_integral[i]; + } + texels_layer += 64 * 64; + + /* Copy blue noise in 3rd layer */ + for (int i = 0; i < 64 * 64; i++) { + texels_layer[i][0] = blue_noise[i][0]; + texels_layer[i][1] = blue_noise[i][2]; + texels_layer[i][2] = cosf(blue_noise[i][1] * 2.0f * M_PI); + texels_layer[i][3] = sinf(blue_noise[i][1] * 2.0f * M_PI); + } + texels_layer += 64 * 64; + + /* Copy Refraction GGX LUT in layer 4 - 20 */ + for (int j = 0; j < 16; ++j) { + for (int i = 0; i < 64 * 64; i++) { + texels_layer[i][0] = btdf_split_sum_ggx[j * 2][i]; + texels_layer[i][1] = btdf_split_sum_ggx[j * 2][i]; + texels_layer[i][2] = btdf_split_sum_ggx[j * 2][i]; + texels_layer[i][3] = btdf_split_sum_ggx[j * 2][i]; + } + texels_layer += 64 * 64; + } + + e_data.util_tex = DRW_texture_create_2D_array( + 64, 64, layers, GPU_RGBA16F, DRW_TEX_FILTER | DRW_TEX_WRAP, (float *)texels); + + MEM_freeN(texels); +} + +void EEVEE_update_noise(EEVEE_PassList *psl, EEVEE_FramebufferList *fbl, const double offsets[3]) +{ + e_data.noise_offsets[0] = offsets[0]; + e_data.noise_offsets[1] = offsets[1]; + e_data.noise_offsets[2] = offsets[2]; + + /* Attach & detach because we don't currently support multiple FB per texture, + * and this would be the case for multiple viewport. */ + GPU_framebuffer_bind(fbl->update_noise_fb); + DRW_draw_pass(psl->update_noise_pass); +} + +static void EEVEE_update_viewvecs(float invproj[4][4], float winmat[4][4], float (*r_viewvecs)[4]) +{ + /* view vectors for the corners of the view frustum. + * Can be used to recreate the world space position easily */ + float view_vecs[4][4] = { + {-1.0f, -1.0f, -1.0f, 1.0f}, + { 1.0f, -1.0f, -1.0f, 1.0f}, + {-1.0f, 1.0f, -1.0f, 1.0f}, + {-1.0f, -1.0f, 1.0f, 1.0f} + }; + + /* convert the view vectors to view space */ + const bool is_persp = (winmat[3][3] == 0.0f); + for (int i = 0; i < 4; i++) { + mul_project_m4_v3(invproj, view_vecs[i]); + /* normalized trick see: + * http://www.derschmale.com/2014/01/26/reconstructing-positions-from-the-depth-buffer */ + if (is_persp) { + /* Divide XY by Z. */ + mul_v2_fl(view_vecs[i], 1.0f / view_vecs[i][2]); + } + } + + /** + * If ortho : view_vecs[0] is the near-bottom-left corner of the frustum and + * view_vecs[1] is the vector going from the near-bottom-left corner to + * the far-top-right corner. + * If Persp : view_vecs[0].xy and view_vecs[1].xy are respectively the bottom-left corner + * when Z = 1, and top-left corner if Z = 1. + * view_vecs[0].z the near clip distance and view_vecs[1].z is the (signed) + * distance from the near plane to the far clip plane. + **/ + copy_v4_v4(r_viewvecs[0], view_vecs[0]); + + /* we need to store the differences */ + r_viewvecs[1][0] = view_vecs[1][0] - view_vecs[0][0]; + r_viewvecs[1][1] = view_vecs[2][1] - view_vecs[0][1]; + r_viewvecs[1][2] = view_vecs[3][2] - view_vecs[0][2]; +} + +void EEVEE_materials_init(EEVEE_ViewLayerData *sldata, EEVEE_StorageList *stl, EEVEE_FramebufferList *fbl) +{ + if (!e_data.frag_shader_lib) { + /* Shaders */ + e_data.frag_shader_lib = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl, + datatoc_ambient_occlusion_lib_glsl, + datatoc_raytrace_lib_glsl, + datatoc_ssr_lib_glsl, + datatoc_octahedron_lib_glsl, + datatoc_irradiance_lib_glsl, + datatoc_lightprobe_lib_glsl, + datatoc_ltc_lib_glsl, + datatoc_lamps_lib_glsl, + /* Add one for each Closure */ + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_lit_surface_frag_glsl, + datatoc_volumetric_lib_glsl); + + e_data.volume_shader_lib = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_ambient_occlusion_lib_glsl, + datatoc_octahedron_lib_glsl, + datatoc_irradiance_lib_glsl, + datatoc_lightprobe_lib_glsl, + datatoc_ltc_lib_glsl, + datatoc_lamps_lib_glsl, + datatoc_volumetric_lib_glsl, + datatoc_volumetric_frag_glsl); + + e_data.vert_shader_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_hair_lib_glsl, + datatoc_lit_surface_vert_glsl); + + e_data.default_background = DRW_shader_create( + datatoc_background_vert_glsl, NULL, datatoc_default_world_frag_glsl, + NULL); + + e_data.default_prepass_sh = DRW_shader_create( + datatoc_prepass_vert_glsl, NULL, datatoc_prepass_frag_glsl, + NULL); + + e_data.default_prepass_clip_sh = DRW_shader_create( + datatoc_prepass_vert_glsl, NULL, datatoc_prepass_frag_glsl, + "#define CLIP_PLANES\n"); + + char *vert_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_hair_lib_glsl, + datatoc_prepass_vert_glsl); + + e_data.default_hair_prepass_sh = DRW_shader_create( + vert_str, NULL, datatoc_prepass_frag_glsl, + "#define HAIR_SHADER\n"); + + e_data.default_hair_prepass_clip_sh = DRW_shader_create( + vert_str, NULL, datatoc_prepass_frag_glsl, + "#define HAIR_SHADER\n" + "#define CLIP_PLANES\n"); + + MEM_freeN(vert_str); + + e_data.update_noise_sh = DRW_shader_create_fullscreen( + datatoc_update_noise_frag_glsl, NULL); + + eevee_init_util_texture(); + eevee_init_noise_texture(); + eevee_init_dummys(); + } + + if (!DRW_state_is_image_render() && + ((stl->effects->enabled_effects & EFFECT_TAA) == 0)) + { + e_data.alpha_hash_offset = 0.0f; + e_data.alpha_hash_scale = 1.0f; + } + else { + double r; + BLI_halton_1D(5, 0.0, stl->effects->taa_current_sample - 1, &r); + e_data.alpha_hash_offset = (float)r; + e_data.alpha_hash_scale = 0.01f; + } + + { + /* Update view_vecs */ + float invproj[4][4], winmat[4][4]; + DRW_viewport_matrix_get(winmat, DRW_MAT_WIN); + DRW_viewport_matrix_get(invproj, DRW_MAT_WININV); + + EEVEE_update_viewvecs(invproj, winmat, sldata->common_data.view_vecs); + } + + { + /* Update noise Framebuffer. */ + GPU_framebuffer_ensure_config(&fbl->update_noise_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE_LAYER(e_data.util_tex, 2) + }); + } +} + +struct GPUMaterial *EEVEE_material_world_lightprobe_get(struct Scene *scene, World *wo) +{ + const void *engine = &DRW_engine_viewport_eevee_type; + const int options = VAR_WORLD_PROBE; + + GPUMaterial *mat = DRW_shader_find_from_world(wo, engine, options, false); + if (mat != NULL) { + return mat; + } + return DRW_shader_create_from_world( + scene, wo, engine, options, + datatoc_background_vert_glsl, NULL, e_data.frag_shader_lib, + SHADER_DEFINES "#define PROBE_CAPTURE\n", false); +} + +struct GPUMaterial *EEVEE_material_world_background_get(struct Scene *scene, World *wo) +{ + const void *engine = &DRW_engine_viewport_eevee_type; + int options = VAR_WORLD_BACKGROUND; + + GPUMaterial *mat = DRW_shader_find_from_world(wo, engine, options, true); + if (mat != NULL) { + return mat; + } + return DRW_shader_create_from_world( + scene, wo, engine, options, + datatoc_background_vert_glsl, NULL, e_data.frag_shader_lib, + SHADER_DEFINES "#define WORLD_BACKGROUND\n", true); +} + +struct GPUMaterial *EEVEE_material_world_volume_get(struct Scene *scene, World *wo) +{ + const void *engine = &DRW_engine_viewport_eevee_type; + int options = VAR_WORLD_VOLUME; + + GPUMaterial *mat = DRW_shader_find_from_world(wo, engine, options, true); + if (mat != NULL) { + return mat; + } + + char *defines = eevee_get_volume_defines(options); + + mat = DRW_shader_create_from_world( + scene, wo, engine, options, + datatoc_volumetric_vert_glsl, datatoc_volumetric_geom_glsl, e_data.volume_shader_lib, + defines, true); + + MEM_freeN(defines); + + return mat; +} + +struct GPUMaterial *EEVEE_material_mesh_get( + struct Scene *scene, Material *ma, EEVEE_Data *vedata, + bool use_blend, bool use_multiply, bool use_refract, bool use_sss, bool use_translucency, int shadow_method) +{ + EEVEE_EffectsInfo *effects = vedata->stl->effects; + const void *engine = &DRW_engine_viewport_eevee_type; + int options = VAR_MAT_MESH; + + if (use_blend) options |= VAR_MAT_BLEND; + if (use_multiply) options |= VAR_MAT_MULT; + if (use_refract) options |= VAR_MAT_REFRACT; + if (use_sss) options |= VAR_MAT_SSS; + if (use_sss && effects->sss_separate_albedo) options |= VAR_MAT_SSSALBED; + if (use_translucency) options |= VAR_MAT_TRANSLUC; + if (((effects->enabled_effects & EFFECT_VOLUMETRIC) != 0) && use_blend) options |= VAR_MAT_VOLUME; + + options |= eevee_material_shadow_option(shadow_method); + + GPUMaterial *mat = DRW_shader_find_from_material(ma, engine, options, true); + if (mat) { + return mat; + } + + char *defines = eevee_get_defines(options); + + mat = DRW_shader_create_from_material( + scene, ma, engine, options, + e_data.vert_shader_str, NULL, e_data.frag_shader_lib, + defines, true); + + MEM_freeN(defines); + + return mat; +} + +struct GPUMaterial *EEVEE_material_mesh_volume_get(struct Scene *scene, Material *ma) +{ + const void *engine = &DRW_engine_viewport_eevee_type; + int options = VAR_MAT_VOLUME; + + GPUMaterial *mat = DRW_shader_find_from_material(ma, engine, options, true); + if (mat != NULL) { + return mat; + } + + char *defines = eevee_get_volume_defines(options); + + mat = DRW_shader_create_from_material( + scene, ma, engine, options, + datatoc_volumetric_vert_glsl, datatoc_volumetric_geom_glsl, e_data.volume_shader_lib, + defines, true); + + MEM_freeN(defines); + + return mat; +} + +struct GPUMaterial *EEVEE_material_mesh_depth_get( + struct Scene *scene, Material *ma, + bool use_hashed_alpha, bool is_shadow) +{ + const void *engine = &DRW_engine_viewport_eevee_type; + int options = VAR_MAT_MESH; + + if (use_hashed_alpha) { + options |= VAR_MAT_HASH; + } + else { + options |= VAR_MAT_CLIP; + } + + if (is_shadow) + options |= VAR_MAT_SHADOW; + + GPUMaterial *mat = DRW_shader_find_from_material(ma, engine, options, true); + if (mat) { + return mat; + } + + char *defines = eevee_get_defines(options); + + char *frag_str = BLI_string_joinN( + e_data.frag_shader_lib, + datatoc_prepass_frag_glsl); + + mat = DRW_shader_create_from_material( + scene, ma, engine, options, + (is_shadow) ? datatoc_shadow_vert_glsl : e_data.vert_shader_str, + NULL, + frag_str, + defines, + true); + + MEM_freeN(frag_str); + MEM_freeN(defines); + + return mat; +} + +struct GPUMaterial *EEVEE_material_hair_get( + struct Scene *scene, Material *ma, int shadow_method) +{ + const void *engine = &DRW_engine_viewport_eevee_type; + int options = VAR_MAT_MESH | VAR_MAT_HAIR; + + options |= eevee_material_shadow_option(shadow_method); + + GPUMaterial *mat = DRW_shader_find_from_material(ma, engine, options, true); + if (mat) { + return mat; + } + + char *defines = eevee_get_defines(options); + + mat = DRW_shader_create_from_material( + scene, ma, engine, options, + e_data.vert_shader_str, NULL, e_data.frag_shader_lib, + defines, true); + + MEM_freeN(defines); + + return mat; +} + +/** + * Create a default shading group inside the given pass. + **/ +static struct DRWShadingGroup *EEVEE_default_shading_group_create( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, DRWPass *pass, + bool is_hair, bool is_flat_normal, bool use_blend, bool use_ssr, int shadow_method) +{ + EEVEE_EffectsInfo *effects = vedata->stl->effects; + static int ssr_id; + ssr_id = (use_ssr) ? 1 : -1; + int options = VAR_MAT_MESH; + + if (is_hair) options |= VAR_MAT_HAIR; + if (is_flat_normal) options |= VAR_MAT_FLAT; + if (use_blend) options |= VAR_MAT_BLEND; + if (((effects->enabled_effects & EFFECT_VOLUMETRIC) != 0) && use_blend) options |= VAR_MAT_VOLUME; + + options |= eevee_material_shadow_option(shadow_method); + + if (e_data.default_lit[options] == NULL) { + create_default_shader(options); + } + + DRWShadingGroup *shgrp = DRW_shgroup_create(e_data.default_lit[options], pass); + add_standard_uniforms(shgrp, sldata, vedata, &ssr_id, NULL, true, true, false, false, use_blend); + + return shgrp; +} + +/** + * Create a default shading group inside the default pass without standard uniforms. + **/ +static struct DRWShadingGroup *EEVEE_default_shading_group_get( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + Object *ob, ParticleSystem *psys, ModifierData *md, + bool is_hair, bool is_flat_normal, bool use_ssr, int shadow_method) +{ + static int ssr_id; + ssr_id = (use_ssr) ? 1 : -1; + int options = VAR_MAT_MESH; + + BLI_assert(!is_hair || (ob && psys && md)); + + if (is_hair) options |= VAR_MAT_HAIR; + if (is_flat_normal) options |= VAR_MAT_FLAT; + + options |= eevee_material_shadow_option(shadow_method); + + if (e_data.default_lit[options] == NULL) { + create_default_shader(options); + } + + if (vedata->psl->default_pass[options] == NULL) { + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_WIRE; + vedata->psl->default_pass[options] = DRW_pass_create("Default Lit Pass", state); + + /* XXX / WATCH: This creates non persistent binds for the ubos and textures. + * But it's currently OK because the following shgroups does not add any bind. + * EDIT: THIS IS NOT THE CASE FOR HAIRS !!! DUMMY!!! */ + if (!is_hair) { + DRWShadingGroup *shgrp = DRW_shgroup_create(e_data.default_lit[options], vedata->psl->default_pass[options]); + add_standard_uniforms(shgrp, sldata, vedata, &ssr_id, NULL, true, true, false, false, false); + } + } + + if (is_hair) { + DRWShadingGroup *shgrp = DRW_shgroup_hair_create(ob, psys, md, + vedata->psl->default_pass[options], + e_data.default_lit[options]); + add_standard_uniforms(shgrp, sldata, vedata, &ssr_id, NULL, true, true, false, false, false); + return shgrp; + } + else { + return DRW_shgroup_create(e_data.default_lit[options], vedata->psl->default_pass[options]); + } +} + +/** + * Create a default shading group inside the lookdev pass without standard uniforms. + **/ +static struct DRWShadingGroup *EEVEE_lookdev_shading_group_get( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + bool use_ssr, int shadow_method) +{ + static int ssr_id; + ssr_id = (use_ssr) ? 1 : -1; + int options = VAR_MAT_MESH | VAR_MAT_LOOKDEV; + + options |= eevee_material_shadow_option(shadow_method); + + if (e_data.default_lit[options] == NULL) { + create_default_shader(options); + } + + if (vedata->psl->lookdev_pass == NULL) { + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_ALWAYS | DRW_STATE_CULL_BACK; + vedata->psl->lookdev_pass = DRW_pass_create("LookDev Pass", state); + + DRWShadingGroup *shgrp = DRW_shgroup_create(e_data.default_lit[options], vedata->psl->lookdev_pass); + /* XXX / WATCH: This creates non persistent binds for the ubos and textures. + * But it's currently OK because the following shgroups does not add any bind. */ + add_standard_uniforms(shgrp, sldata, vedata, &ssr_id, NULL, true, true, false, false, false); + } + + return DRW_shgroup_create(e_data.default_lit[options], vedata->psl->lookdev_pass); +} +void EEVEE_materials_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + + /* Create Material Ghash */ + { + stl->g_data->material_hash = BLI_ghash_ptr_new("Eevee_material ghash"); + } + + { + psl->background_pass = DRW_pass_create("Background Pass", DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL); + + struct GPUBatch *geom = DRW_cache_fullscreen_quad_get(); + DRWShadingGroup *grp = NULL; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + World *wo = scene->world; + + float *col = ts.colorBackground; + + /* LookDev */ + EEVEE_lookdev_cache_init(vedata, &grp, psl->background_pass, wo, NULL); + /* END */ + + if (!grp && wo) { + col = &wo->horr; + + if (wo->use_nodes && wo->nodetree) { + static float error_col[3] = {1.0f, 0.0f, 1.0f}; + static float compile_col[3] = {0.5f, 0.5f, 0.5f}; + struct GPUMaterial *gpumat = EEVEE_material_world_background_get(scene, wo); + + switch (GPU_material_status(gpumat)) { + case GPU_MAT_SUCCESS: + grp = DRW_shgroup_material_create(gpumat, psl->background_pass); + DRW_shgroup_uniform_float(grp, "backgroundAlpha", &stl->g_data->background_alpha, 1); + /* TODO (fclem): remove those (need to clean the GLSL files). */ + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(grp, "shadow_block", sldata->shadow_ubo); + DRW_shgroup_call_add(grp, geom, NULL); + break; + case GPU_MAT_QUEUED: + /* TODO Bypass probe compilation. */ + col = compile_col; + break; + case GPU_MAT_FAILED: + default: + col = error_col; + break; + } + } + } + + /* Fallback if shader fails or if not using nodetree. */ + if (grp == NULL) { + grp = DRW_shgroup_create(e_data.default_background, psl->background_pass); + DRW_shgroup_uniform_vec3(grp, "color", col, 1); + DRW_shgroup_uniform_float(grp, "backgroundAlpha", &stl->g_data->background_alpha, 1); + DRW_shgroup_call_add(grp, geom, NULL); + } + } + + { + DRWState state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_WIRE; + psl->depth_pass = DRW_pass_create("Depth Pass", state); + stl->g_data->depth_shgrp = DRW_shgroup_create(e_data.default_prepass_sh, psl->depth_pass); + + state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_BACK; + psl->depth_pass_cull = DRW_pass_create("Depth Pass Cull", state); + stl->g_data->depth_shgrp_cull = DRW_shgroup_create(e_data.default_prepass_sh, psl->depth_pass_cull); + + state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_WIRE; + psl->depth_pass_clip = DRW_pass_create("Depth Pass Clip", state); + stl->g_data->depth_shgrp_clip = DRW_shgroup_create(e_data.default_prepass_clip_sh, psl->depth_pass_clip); + DRW_shgroup_uniform_block(stl->g_data->depth_shgrp_clip, "clip_block", sldata->clip_ubo); + + state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_CULL_BACK; + psl->depth_pass_clip_cull = DRW_pass_create("Depth Pass Cull Clip", state); + stl->g_data->depth_shgrp_clip_cull = DRW_shgroup_create( + e_data.default_prepass_clip_sh, psl->depth_pass_clip_cull); + DRW_shgroup_uniform_block(stl->g_data->depth_shgrp_clip_cull, "clip_block", sldata->clip_ubo); + } + + { + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_WIRE; + psl->material_pass = DRW_pass_create("Material Shader Pass", state); + } + + { + DRWState state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_WIRE; + psl->refract_depth_pass = DRW_pass_create("Refract Depth Pass", state); + stl->g_data->refract_depth_shgrp = DRW_shgroup_create(e_data.default_prepass_sh, psl->refract_depth_pass); + + state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CULL_BACK; + psl->refract_depth_pass_cull = DRW_pass_create("Refract Depth Pass Cull", state); + stl->g_data->refract_depth_shgrp_cull = DRW_shgroup_create( + e_data.default_prepass_sh, psl->refract_depth_pass_cull); + + state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_WIRE; + psl->refract_depth_pass_clip = DRW_pass_create("Refract Depth Pass Clip", state); + stl->g_data->refract_depth_shgrp_clip = DRW_shgroup_create( + e_data.default_prepass_clip_sh, psl->refract_depth_pass_clip); + DRW_shgroup_uniform_block(stl->g_data->refract_depth_shgrp_clip, "clip_block", sldata->clip_ubo); + + state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_CULL_BACK; + psl->refract_depth_pass_clip_cull = DRW_pass_create("Refract Depth Pass Cull Clip", state); + stl->g_data->refract_depth_shgrp_clip_cull = DRW_shgroup_create( + e_data.default_prepass_clip_sh, psl->refract_depth_pass_clip_cull); + DRW_shgroup_uniform_block(stl->g_data->refract_depth_shgrp_clip_cull, "clip_block", sldata->clip_ubo); + } + + { + DRWState state = ( + DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_CLIP_PLANES | + DRW_STATE_WIRE); + psl->refract_pass = DRW_pass_create("Opaque Refraction Pass", state); + } + + { + DRWState state = ( + DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_CLIP_PLANES | + DRW_STATE_WIRE | DRW_STATE_WRITE_STENCIL); + psl->sss_pass = DRW_pass_create("Subsurface Pass", state); + e_data.sss_count = 0; + } + + { + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_CLIP_PLANES | DRW_STATE_WIRE; + psl->transparent_pass = DRW_pass_create("Material Transparent Pass", state); + } + + { + psl->update_noise_pass = DRW_pass_create("Update Noise Pass", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.update_noise_sh, psl->update_noise_pass); + DRW_shgroup_uniform_texture(grp, "blueNoise", e_data.noise_tex); + DRW_shgroup_uniform_vec3(grp, "offsets", e_data.noise_offsets, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } +} + +#define ADD_SHGROUP_CALL(shgrp, ob, ma, geom, oedata) do { \ + if (is_sculpt_mode_draw) { \ + DRW_shgroup_call_sculpt_add(shgrp, ob, ob->obmat); \ + } \ + else { \ + if (oedata) { \ + DRW_shgroup_call_object_add_with_callback(shgrp, geom, ob, ma, EEVEE_lightprobes_obj_visibility_cb, oedata); \ + } \ + else { \ + DRW_shgroup_call_object_add_ex(shgrp, geom, ob, ma, false); \ + } \ + } \ +} while (0) + +#define ADD_SHGROUP_CALL_SAFE(shgrp, ob, ma, geom, oedata) do { \ + if (shgrp) { \ + ADD_SHGROUP_CALL(shgrp, ob, ma, geom, oedata); \ + } \ +} while (0) + +typedef struct EeveeMaterialShadingGroups { + struct DRWShadingGroup *shading_grp; + struct DRWShadingGroup *depth_grp; + struct DRWShadingGroup *depth_clip_grp; +} EeveeMaterialShadingGroups; + +static void material_opaque( + Material *ma, GHash *material_hash, EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + bool do_cull, bool use_flat_nor, struct GPUMaterial **gpumat, struct GPUMaterial **gpumat_depth, + struct DRWShadingGroup **shgrp, struct DRWShadingGroup **shgrp_depth, struct DRWShadingGroup **shgrp_depth_clip) +{ + EEVEE_EffectsInfo *effects = vedata->stl->effects; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + EEVEE_LampsInfo *linfo = sldata->lamps; + bool use_diffuse, use_glossy, use_refract; + + float *color_p = &ma->r; + float *metal_p = &ma->metallic; + float *spec_p = &ma->spec; + float *rough_p = &ma->roughness; + + const bool use_gpumat = (ma->use_nodes && ma->nodetree); + const bool use_ssrefract = ((ma->blend_flag & MA_BL_SS_REFRACTION) != 0) && + ((effects->enabled_effects & EFFECT_REFRACT) != 0); + bool use_sss = ((effects->enabled_effects & EFFECT_SSS) != 0); + const bool use_translucency = use_sss && ((ma->blend_flag & MA_BL_TRANSLUCENCY) != 0); + + EeveeMaterialShadingGroups *emsg = BLI_ghash_lookup(material_hash, (const void *)ma); + + if (emsg) { + *shgrp = emsg->shading_grp; + *shgrp_depth = emsg->depth_grp; + *shgrp_depth_clip = emsg->depth_clip_grp; + + /* This will have been created already, just perform a lookup. */ + *gpumat = (use_gpumat) ? EEVEE_material_mesh_get( + scene, ma, vedata, false, false, use_ssrefract, use_sss, use_translucency, linfo->shadow_method) : NULL; + *gpumat_depth = (use_gpumat) ? EEVEE_material_mesh_depth_get( + scene, ma, (ma->blend_method == MA_BM_HASHED), false) : NULL; + return; + } + + if (use_gpumat) { + static float error_col[3] = {1.0f, 0.0f, 1.0f}; + static float compile_col[3] = {0.5f, 0.5f, 0.5f}; + static float half = 0.5f; + + /* Shading */ + *gpumat = EEVEE_material_mesh_get( + scene, ma, vedata, false, false, use_ssrefract, + use_sss, use_translucency, linfo->shadow_method); + + GPUMaterialStatus status_mat_surface = GPU_material_status(*gpumat); + + /* Alpha CLipped : Discard pixel from depth pass, then + * fail the depth test for shading. */ + if (ELEM(ma->blend_method, MA_BM_CLIP, MA_BM_HASHED)) { + *gpumat_depth = EEVEE_material_mesh_depth_get(scene, ma, (ma->blend_method == MA_BM_HASHED), false); + + GPUMaterialStatus status_mat_depth = GPU_material_status(*gpumat_depth); + if (status_mat_depth != GPU_MAT_SUCCESS) { + /* Mixing both flags. If depth shader fails, show it to the user by not using + * the surface shader. */ + status_mat_surface = status_mat_depth; + } + else if (use_ssrefract) { + *shgrp_depth = DRW_shgroup_material_create( + *gpumat_depth, (do_cull) ? psl->refract_depth_pass_cull : psl->refract_depth_pass); + *shgrp_depth_clip = DRW_shgroup_material_create( + *gpumat_depth, (do_cull) ? psl->refract_depth_pass_clip_cull : psl->refract_depth_pass_clip); + } + else { + *shgrp_depth = DRW_shgroup_material_create( + *gpumat_depth, (do_cull) ? psl->depth_pass_cull : psl->depth_pass); + *shgrp_depth_clip = DRW_shgroup_material_create( + *gpumat_depth, (do_cull) ? psl->depth_pass_clip_cull : psl->depth_pass_clip); + } + + if (*shgrp_depth != NULL) { + use_diffuse = GPU_material_flag_get(*gpumat_depth, GPU_MATFLAG_DIFFUSE); + use_glossy = GPU_material_flag_get(*gpumat_depth, GPU_MATFLAG_GLOSSY); + use_refract = GPU_material_flag_get(*gpumat_depth, GPU_MATFLAG_REFRACT); + + add_standard_uniforms(*shgrp_depth, sldata, vedata, NULL, NULL, + use_diffuse, use_glossy, use_refract, false, false); + add_standard_uniforms(*shgrp_depth_clip, sldata, vedata, NULL, NULL, + use_diffuse, use_glossy, use_refract, false, false); + + if (ma->blend_method == MA_BM_CLIP) { + DRW_shgroup_uniform_float(*shgrp_depth, "alphaThreshold", &ma->alpha_threshold, 1); + DRW_shgroup_uniform_float(*shgrp_depth_clip, "alphaThreshold", &ma->alpha_threshold, 1); + } + else if (ma->blend_method == MA_BM_HASHED) { + DRW_shgroup_uniform_float(*shgrp_depth, "hashAlphaOffset", &e_data.alpha_hash_offset, 1); + DRW_shgroup_uniform_float(*shgrp_depth_clip, "hashAlphaOffset", &e_data.alpha_hash_offset, 1); + DRW_shgroup_uniform_float_copy(*shgrp_depth, "hashAlphaScale", e_data.alpha_hash_scale); + DRW_shgroup_uniform_float_copy(*shgrp_depth_clip, "hashAlphaScale", e_data.alpha_hash_scale); + } + } + } + + switch (status_mat_surface) { + case GPU_MAT_SUCCESS: + { + static int no_ssr = -1; + static int first_ssr = 1; + int *ssr_id = (((effects->enabled_effects & EFFECT_SSR) != 0) && !use_ssrefract) ? &first_ssr : &no_ssr; + use_diffuse = GPU_material_flag_get(*gpumat, GPU_MATFLAG_DIFFUSE); + use_glossy = GPU_material_flag_get(*gpumat, GPU_MATFLAG_GLOSSY); + use_refract = GPU_material_flag_get(*gpumat, GPU_MATFLAG_REFRACT); + use_sss = use_sss && GPU_material_flag_get(*gpumat, GPU_MATFLAG_SSS); + + *shgrp = DRW_shgroup_material_create( + *gpumat, + (use_ssrefract) ? psl->refract_pass : + (use_sss) ? psl->sss_pass : psl->material_pass); + + add_standard_uniforms(*shgrp, sldata, vedata, ssr_id, &ma->refract_depth, + use_diffuse, use_glossy, use_refract, use_ssrefract, false); + + if (use_sss) { + struct GPUTexture *sss_tex_profile = NULL; + struct GPUUniformBuffer *sss_profile = GPU_material_sss_profile_get( + *gpumat, + stl->effects->sss_sample_count, + &sss_tex_profile); + + if (sss_profile) { + if (use_translucency) { + DRW_shgroup_uniform_block(*shgrp, "sssProfile", sss_profile); + DRW_shgroup_uniform_texture(*shgrp, "sssTexProfile", sss_tex_profile); + } + + /* Limit of 8 bit stencil buffer. ID 255 is refraction. */ + if (e_data.sss_count < 254) { + DRW_shgroup_stencil_mask(*shgrp, e_data.sss_count + 1); + EEVEE_subsurface_add_pass(sldata, vedata, e_data.sss_count + 1, sss_profile); + e_data.sss_count++; + } + else { + /* TODO : display message. */ + printf("Error: Too many different Subsurface shader in the scene.\n"); + } + } + else { + if (use_translucency) { + /* NOTE: This is a nasty workaround, because the sss profile might not have been generated + * but the UBO is still declared in this case even if not used. But rendering without a + * bound UBO might result in crashes on certain platform. */ + DRW_shgroup_uniform_block(*shgrp, "sssProfile", e_data.dummy_sss_profile); + } + } + } + else { + if (use_translucency) { + DRW_shgroup_uniform_block(*shgrp, "sssProfile", e_data.dummy_sss_profile); + } + } + break; + } + case GPU_MAT_QUEUED: + { + color_p = compile_col; + metal_p = spec_p = rough_p = ½ + break; + } + case GPU_MAT_FAILED: + default: + color_p = error_col; + metal_p = spec_p = rough_p = ½ + break; + } + } + + /* Fallback to default shader */ + if (*shgrp == NULL) { + bool use_ssr = ((effects->enabled_effects & EFFECT_SSR) != 0); + *shgrp = EEVEE_default_shading_group_get(sldata, vedata, + NULL, NULL, NULL, + false, use_flat_nor, use_ssr, linfo->shadow_method); + DRW_shgroup_uniform_vec3(*shgrp, "basecol", color_p, 1); + DRW_shgroup_uniform_float(*shgrp, "metallic", metal_p, 1); + DRW_shgroup_uniform_float(*shgrp, "specular", spec_p, 1); + DRW_shgroup_uniform_float(*shgrp, "roughness", rough_p, 1); + } + + /* Fallback default depth prepass */ + if (*shgrp_depth == NULL) { + if (use_ssrefract) { + *shgrp_depth = (do_cull) ? stl->g_data->refract_depth_shgrp_cull : stl->g_data->refract_depth_shgrp; + *shgrp_depth_clip = (do_cull) ? stl->g_data->refract_depth_shgrp_clip_cull : stl->g_data->refract_depth_shgrp_clip; + } + else { + *shgrp_depth = (do_cull) ? stl->g_data->depth_shgrp_cull : stl->g_data->depth_shgrp; + *shgrp_depth_clip = (do_cull) ? stl->g_data->depth_shgrp_clip_cull : stl->g_data->depth_shgrp_clip; + } + } + + emsg = MEM_mallocN(sizeof(EeveeMaterialShadingGroups), "EeveeMaterialShadingGroups"); + emsg->shading_grp = *shgrp; + emsg->depth_grp = *shgrp_depth; + emsg->depth_clip_grp = *shgrp_depth_clip; + BLI_ghash_insert(material_hash, ma, emsg); +} + +static void material_transparent( + Material *ma, EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, + bool do_cull, bool use_flat_nor, + struct GPUMaterial **gpumat, struct DRWShadingGroup **shgrp, struct DRWShadingGroup **shgrp_depth) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + EEVEE_PassList *psl = ((EEVEE_Data *)vedata)->psl; + EEVEE_LampsInfo *linfo = sldata->lamps; + + const bool use_ssrefract = ( + ((ma->blend_flag & MA_BL_SS_REFRACTION) != 0) && + ((stl->effects->enabled_effects & EFFECT_REFRACT) != 0) + ); + float *color_p = &ma->r; + float *metal_p = &ma->metallic; + float *spec_p = &ma->spec; + float *rough_p = &ma->roughness; + + if (ma->use_nodes && ma->nodetree) { + static float error_col[3] = {1.0f, 0.0f, 1.0f}; + static float compile_col[3] = {0.5f, 0.5f, 0.5f}; + static float half = 0.5f; + + /* Shading */ + *gpumat = EEVEE_material_mesh_get( + scene, ma, vedata, true, (ma->blend_method == MA_BM_MULTIPLY), use_ssrefract, + false, false, linfo->shadow_method); + + switch (GPU_material_status(*gpumat)) { + case GPU_MAT_SUCCESS: + { + static int ssr_id = -1; /* TODO transparent SSR */ + bool use_blend = (ma->blend_method & MA_BM_BLEND) != 0; + + *shgrp = DRW_shgroup_material_create(*gpumat, psl->transparent_pass); + + bool use_diffuse = GPU_material_flag_get(*gpumat, GPU_MATFLAG_DIFFUSE); + bool use_glossy = GPU_material_flag_get(*gpumat, GPU_MATFLAG_GLOSSY); + bool use_refract = GPU_material_flag_get(*gpumat, GPU_MATFLAG_REFRACT); + + add_standard_uniforms(*shgrp, sldata, vedata, &ssr_id, &ma->refract_depth, + use_diffuse, use_glossy, use_refract, use_ssrefract, use_blend); + break; + } + case GPU_MAT_QUEUED: + { + /* TODO Bypass probe compilation. */ + color_p = compile_col; + metal_p = spec_p = rough_p = ½ + break; + } + case GPU_MAT_FAILED: + default: + color_p = error_col; + metal_p = spec_p = rough_p = ½ + break; + } + } + + /* Fallback to default shader */ + if (*shgrp == NULL) { + *shgrp = EEVEE_default_shading_group_create( + sldata, vedata, psl->transparent_pass, + false, use_flat_nor, true, false, linfo->shadow_method); + DRW_shgroup_uniform_vec3(*shgrp, "basecol", color_p, 1); + DRW_shgroup_uniform_float(*shgrp, "metallic", metal_p, 1); + DRW_shgroup_uniform_float(*shgrp, "specular", spec_p, 1); + DRW_shgroup_uniform_float(*shgrp, "roughness", rough_p, 1); + } + + const bool use_prepass = ((ma->blend_flag & MA_BL_HIDE_BACKSIDE) != 0); + + DRWState all_state = ( + DRW_STATE_WRITE_DEPTH | DRW_STATE_WRITE_COLOR | DRW_STATE_CULL_BACK | + DRW_STATE_DEPTH_LESS_EQUAL | DRW_STATE_DEPTH_EQUAL | + DRW_STATE_BLEND | DRW_STATE_ADDITIVE | DRW_STATE_MULTIPLY + ); + + DRWState cur_state = DRW_STATE_WRITE_COLOR; + cur_state |= (use_prepass) ? DRW_STATE_DEPTH_EQUAL : DRW_STATE_DEPTH_LESS_EQUAL; + cur_state |= (do_cull) ? DRW_STATE_CULL_BACK : 0; + + switch (ma->blend_method) { + case MA_BM_ADD: + cur_state |= DRW_STATE_ADDITIVE; + break; + case MA_BM_MULTIPLY: + cur_state |= DRW_STATE_MULTIPLY; + break; + case MA_BM_BLEND: + cur_state |= DRW_STATE_BLEND; + break; + default: + BLI_assert(0); + break; + } + + /* Disable other blend modes and use the one we want. */ + DRW_shgroup_state_disable(*shgrp, all_state); + DRW_shgroup_state_enable(*shgrp, cur_state); + + /* Depth prepass */ + if (use_prepass) { + *shgrp_depth = DRW_shgroup_create(e_data.default_prepass_clip_sh, psl->transparent_pass); + DRW_shgroup_uniform_block(*shgrp_depth, "clip_block", sldata->clip_ubo); + + cur_state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL; + cur_state |= (do_cull) ? DRW_STATE_CULL_BACK : 0; + + DRW_shgroup_state_disable(*shgrp_depth, all_state); + DRW_shgroup_state_enable(*shgrp_depth, cur_state); + } +} + +void EEVEE_materials_cache_populate(EEVEE_Data *vedata, EEVEE_ViewLayerData *sldata, Object *ob, bool *cast_shadow) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + GHash *material_hash = stl->g_data->material_hash; + + const bool do_cull = (draw_ctx->v3d && (draw_ctx->v3d->flag2 & V3D_BACKFACE_CULLING)); + const bool is_active = (ob == draw_ctx->obact); + const bool is_sculpt_mode = is_active && (draw_ctx->object_mode & OB_MODE_SCULPT) != 0; +#if 0 + const bool is_sculpt_mode_draw = is_sculpt_mode && (draw_ctx->v3d->flag2 & V3D_SHOW_MODE_SHADE_OVERRIDE) == 0; +#else + /* For now just force fully shaded with eevee when supported. */ + const bool is_sculpt_mode_draw = + is_sculpt_mode && + ((ob->sculpt && ob->sculpt->pbvh) && (BKE_pbvh_type(ob->sculpt->pbvh) != PBVH_FACES)); +#endif + const bool use_hide = is_active && DRW_object_use_hide_faces(ob); + const bool is_default_mode_shader = is_sculpt_mode; + + /* First get materials for this mesh. */ + if (ELEM(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { + const int materials_len = MAX2(1, (is_sculpt_mode_draw ? 1 : ob->totcol)); + + struct DRWShadingGroup **shgrp_array = BLI_array_alloca(shgrp_array, materials_len); + struct DRWShadingGroup **shgrp_depth_array = BLI_array_alloca(shgrp_depth_array, materials_len); + struct DRWShadingGroup **shgrp_depth_clip_array = BLI_array_alloca(shgrp_depth_clip_array, materials_len); + + struct GPUMaterial **gpumat_array = BLI_array_alloca(gpumat_array, materials_len); + struct GPUMaterial **gpumat_depth_array = BLI_array_alloca(gpumat_array, materials_len); + + bool use_flat_nor = false; + + if (is_default_mode_shader) { + if (is_sculpt_mode_draw) { + use_flat_nor = DRW_object_is_flat_normal(ob); + } + } + + for (int i = 0; i < materials_len; ++i) { + Material *ma; + + if (is_sculpt_mode_draw) { + ma = NULL; + } + else { + ma = give_current_material(ob, i + 1); + } + + gpumat_array[i] = NULL; + gpumat_depth_array[i] = NULL; + shgrp_array[i] = NULL; + shgrp_depth_array[i] = NULL; + shgrp_depth_clip_array[i] = NULL; + + if (ma == NULL) + ma = &defmaterial; + + switch (ma->blend_method) { + case MA_BM_SOLID: + case MA_BM_CLIP: + case MA_BM_HASHED: + material_opaque(ma, material_hash, sldata, vedata, do_cull, use_flat_nor, + &gpumat_array[i], &gpumat_depth_array[i], + &shgrp_array[i], &shgrp_depth_array[i], &shgrp_depth_clip_array[i]); + break; + case MA_BM_ADD: + case MA_BM_MULTIPLY: + case MA_BM_BLEND: + material_transparent(ma, sldata, vedata, do_cull, use_flat_nor, + &gpumat_array[i], &shgrp_array[i], &shgrp_depth_array[i]); + break; + default: + BLI_assert(0); + break; + } + } + + if (is_sculpt_mode && is_sculpt_mode_draw == false) { + DRW_cache_mesh_sculpt_coords_ensure(ob); + } + + /* Only support single volume material for now. */ + /* XXX We rely on the previously compiled surface shader + * to know if the material has a "volume nodetree". + */ + bool use_volume_material = (gpumat_array[0] && GPU_material_use_domain_volume(gpumat_array[0])); + + if (ob->dt >= OB_SOLID) { + /* Get per-material split surface */ + char *auto_layer_names; + int *auto_layer_is_srgb; + int auto_layer_count; + struct GPUBatch **mat_geom = DRW_cache_object_surface_material_get( + ob, gpumat_array, materials_len, use_hide, + &auto_layer_names, + &auto_layer_is_srgb, + &auto_layer_count); + if (mat_geom) { + for (int i = 0; i < materials_len; ++i) { + if (mat_geom[i] == NULL) { + continue; + } + EEVEE_ObjectEngineData *oedata = NULL; + Material *ma = give_current_material(ob, i + 1); + + if (ma == NULL) + ma = &defmaterial; + + /* Do not render surface if we are rendering a volume object + * and do not have a surface closure. */ + if (use_volume_material && + (gpumat_array[i] && !GPU_material_use_domain_surface(gpumat_array[i]))) + { + continue; + } + + /* XXX TODO rewrite this to include the dupli objects. + * This means we cannot exclude dupli objects from reflections!!! */ + if ((ob->base_flag & BASE_FROMDUPLI) == 0) { + oedata = EEVEE_object_data_ensure(ob); + oedata->ob = ob; + oedata->test_data = &sldata->probes->vis_data; + } + + /* Shading pass */ + ADD_SHGROUP_CALL(shgrp_array[i], ob, ma, mat_geom[i], oedata); + + /* Depth Prepass */ + ADD_SHGROUP_CALL_SAFE(shgrp_depth_array[i], ob, ma, mat_geom[i], oedata); + ADD_SHGROUP_CALL_SAFE(shgrp_depth_clip_array[i], ob, ma, mat_geom[i], oedata); + + char *name = auto_layer_names; + for (int j = 0; j < auto_layer_count; ++j) { + /* TODO don't add these uniform when not needed (default pass shaders). */ + if (shgrp_array[i]) { + DRW_shgroup_uniform_bool(shgrp_array[i], name, &auto_layer_is_srgb[j], 1); + } + if (shgrp_depth_array[i]) { + DRW_shgroup_uniform_bool(shgrp_depth_array[i], name, &auto_layer_is_srgb[j], 1); + } + if (shgrp_depth_clip_array[i]) { + DRW_shgroup_uniform_bool(shgrp_depth_clip_array[i], name, &auto_layer_is_srgb[j], 1); + } + /* Go to next layer name. */ + while (*name != '\0') { name++; } + name += 1; + } + + /* Shadow Pass */ + if (ma->use_nodes && ma->nodetree && (ma->blend_method != MA_BM_SOLID)) { + struct GPUMaterial *gpumat; + switch (ma->blend_shadow) { + case MA_BS_SOLID: + EEVEE_lights_cache_shcaster_add( + sldata, stl, mat_geom[i], ob); + *cast_shadow = true; + break; + case MA_BS_CLIP: + gpumat = EEVEE_material_mesh_depth_get(scene, ma, false, true); + EEVEE_lights_cache_shcaster_material_add( + sldata, psl, gpumat, mat_geom[i], ob, &ma->alpha_threshold); + *cast_shadow = true; + break; + case MA_BS_HASHED: + gpumat = EEVEE_material_mesh_depth_get(scene, ma, true, true); + EEVEE_lights_cache_shcaster_material_add( + sldata, psl, gpumat, mat_geom[i], ob, NULL); + *cast_shadow = true; + break; + case MA_BS_NONE: + default: + break; + } + } + else { + EEVEE_lights_cache_shcaster_add(sldata, stl, mat_geom[i], ob); + *cast_shadow = true; + } + } + } + } + + /* Volumetrics */ + if (((stl->effects->enabled_effects & EFFECT_VOLUMETRIC) != 0) && use_volume_material) { + EEVEE_volumes_cache_object_add(sldata, vedata, scene, ob); + } + } +} + +void EEVEE_hair_cache_populate(EEVEE_Data *vedata, EEVEE_ViewLayerData *sldata, Object *ob, bool *cast_shadow) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + + bool use_ssr = ((stl->effects->enabled_effects & EFFECT_SSR) != 0); + + if (ob->type == OB_MESH) { + if (ob != draw_ctx->object_edit) { + for (ModifierData *md = ob->modifiers.first; md; md = md->next) { + if (md->type != eModifierType_ParticleSystem) { + continue; + } + ParticleSystem *psys = ((ParticleSystemModifierData *)md)->psys; + if (!psys_check_enabled(ob, psys, false)) { + continue; + } + if (!DRW_object_is_visible_psys_in_active_context(ob, psys)) { + continue; + } + ParticleSettings *part = psys->part; + const int draw_as = (part->draw_as == PART_DRAW_REND) ? part->ren_as : part->draw_as; + if (draw_as != PART_DRAW_PATH) { + continue; + } + + DRWShadingGroup *shgrp = NULL; + Material *ma = give_current_material(ob, part->omat); + + if (ma == NULL) { + ma = &defmaterial; + } + + float *color_p = &ma->r; + float *metal_p = &ma->metallic; + float *spec_p = &ma->spec; + float *rough_p = &ma->roughness; + + shgrp = DRW_shgroup_hair_create( + ob, psys, md, + psl->depth_pass, + e_data.default_hair_prepass_sh); + + shgrp = DRW_shgroup_hair_create( + ob, psys, md, + psl->depth_pass_clip, + e_data.default_hair_prepass_clip_sh); + DRW_shgroup_uniform_block(shgrp, "clip_block", sldata->clip_ubo); + + shgrp = NULL; + if (ma->use_nodes && ma->nodetree) { + static int ssr_id; + ssr_id = (use_ssr) ? 1 : -1; + static float half = 0.5f; + static float error_col[3] = {1.0f, 0.0f, 1.0f}; + static float compile_col[3] = {0.5f, 0.5f, 0.5f}; + struct GPUMaterial *gpumat = EEVEE_material_hair_get(scene, ma, sldata->lamps->shadow_method); + + switch (GPU_material_status(gpumat)) { + case GPU_MAT_SUCCESS: + { + bool use_diffuse = GPU_material_flag_get(gpumat, GPU_MATFLAG_DIFFUSE); + bool use_glossy = GPU_material_flag_get(gpumat, GPU_MATFLAG_GLOSSY); + bool use_refract = GPU_material_flag_get(gpumat, GPU_MATFLAG_REFRACT); + + shgrp = DRW_shgroup_material_hair_create( + ob, psys, md, + psl->material_pass, + gpumat); + + add_standard_uniforms(shgrp, sldata, vedata, &ssr_id, NULL, + use_diffuse, use_glossy, use_refract, false, false); + break; + } + case GPU_MAT_QUEUED: + { + color_p = compile_col; + metal_p = spec_p = rough_p = ½ + break; + } + case GPU_MAT_FAILED: + default: + color_p = error_col; + metal_p = spec_p = rough_p = ½ + break; + } + } + + /* Fallback to default shader */ + if (shgrp == NULL) { + shgrp = EEVEE_default_shading_group_get(sldata, vedata, + ob, psys, md, + true, false, use_ssr, + sldata->lamps->shadow_method); + DRW_shgroup_uniform_vec3(shgrp, "basecol", color_p, 1); + DRW_shgroup_uniform_float(shgrp, "metallic", metal_p, 1); + DRW_shgroup_uniform_float(shgrp, "specular", spec_p, 1); + DRW_shgroup_uniform_float(shgrp, "roughness", rough_p, 1); + } + + /* Shadows */ + DRW_shgroup_hair_create( + ob, psys, md, + psl->shadow_pass, + e_data.default_hair_prepass_sh); + *cast_shadow = true; + } + } + } +} + +void EEVEE_materials_cache_finish(EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = ((EEVEE_Data *)vedata)->stl; + + /* Look-Dev */ + const DRWContextState *draw_ctx = DRW_context_state_get(); + const View3D *v3d = draw_ctx->v3d; + if (LOOK_DEV_OVERLAY_ENABLED(v3d)) { + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + EEVEE_LampsInfo *linfo = sldata->lamps; + struct GPUBatch *sphere = DRW_cache_sphere_get(); + static float mat1[4][4]; + static float color[3] = {0.8f, 0.8f, 0.8f}; + static float metallic_on = 1.0f; + static float metallic_off = 0.00f; + static float specular_off = 0.5f; + static float specular_on = 1.0f; + static float roughness_off = 0.05f; + static float roughness_on = 1.00f; + + float view_mat[4][4]; + DRW_viewport_matrix_get(view_mat, DRW_MAT_VIEWINV); + + DRWShadingGroup *shgrp = EEVEE_lookdev_shading_group_get(sldata, vedata, false, linfo->shadow_method); + DRW_shgroup_uniform_vec3(shgrp, "basecol", color, 1); + DRW_shgroup_uniform_float(shgrp, "metallic", &metallic_on, 1); + DRW_shgroup_uniform_float(shgrp, "specular", &specular_on, 1); + DRW_shgroup_uniform_float(shgrp, "roughness", &roughness_off, 1); + unit_m4(mat1); + mul_m4_m4m4(mat1, mat1, view_mat); + translate_m4(mat1, -1.5f, 0.0f, -5.0f); + DRW_shgroup_call_add(shgrp, sphere, mat1); + + shgrp = EEVEE_lookdev_shading_group_get(sldata, vedata, false, linfo->shadow_method); + DRW_shgroup_uniform_vec3(shgrp, "basecol", color, 1); + DRW_shgroup_uniform_float(shgrp, "metallic", &metallic_off, 1); + DRW_shgroup_uniform_float(shgrp, "specular", &specular_off, 1); + DRW_shgroup_uniform_float(shgrp, "roughness", &roughness_on, 1); + translate_m4(mat1, 3.0f, 0.0f, 0.0f); + DRW_shgroup_call_add(shgrp, sphere, mat1); + } + /* END */ + + BLI_ghash_free(stl->g_data->material_hash, NULL, MEM_freeN); +} + +void EEVEE_materials_free(void) +{ + for (int i = 0; i < VAR_MAT_MAX; ++i) { + DRW_SHADER_FREE_SAFE(e_data.default_lit[i]); + } + MEM_SAFE_FREE(e_data.frag_shader_lib); + MEM_SAFE_FREE(e_data.vert_shader_str); + MEM_SAFE_FREE(e_data.volume_shader_lib); + DRW_SHADER_FREE_SAFE(e_data.default_hair_prepass_sh); + DRW_SHADER_FREE_SAFE(e_data.default_hair_prepass_clip_sh); + DRW_SHADER_FREE_SAFE(e_data.default_prepass_sh); + DRW_SHADER_FREE_SAFE(e_data.default_prepass_clip_sh); + DRW_SHADER_FREE_SAFE(e_data.default_background); + DRW_SHADER_FREE_SAFE(e_data.update_noise_sh); + DRW_TEXTURE_FREE_SAFE(e_data.util_tex); + DRW_TEXTURE_FREE_SAFE(e_data.noise_tex); + DRW_UBO_FREE_SAFE(e_data.dummy_sss_profile); +} + +void EEVEE_draw_default_passes(EEVEE_PassList *psl) +{ + for (int i = 0; i < VAR_MAT_MAX; ++i) { + if (psl->default_pass[i]) { + DRW_draw_pass(psl->default_pass[i]); + } + } +} diff --git a/source/blender/draw/engines/eevee/eevee_mist.c b/source/blender/draw/engines/eevee/eevee_mist.c new file mode 100644 index 00000000000..de9582611ec --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_mist.c @@ -0,0 +1,139 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_mist.c + * \ingroup draw_engine + * + * Implementation of Blender Mist pass. + * IMPORTANT: This is a "post process" of the Z depth so it will lack any transparent objects. + */ + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "DNA_world_types.h" + +#include "BLI_string_utils.h" + +#include "eevee_private.h" + +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_effect_mist_frag_glsl[]; + +static struct { + struct GPUShader *mist_sh; +} e_data = {NULL}; /* Engine data */ + +void EEVEE_mist_output_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + EEVEE_FramebufferList *fbl = vedata->fbl; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + EEVEE_TextureList *txl = vedata->txl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_PassList *psl = vedata->psl; + EEVEE_PrivateData *g_data = stl->g_data; + Scene *scene = draw_ctx->scene; + + float clear[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + + if (e_data.mist_sh == NULL) { + char *frag_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_effect_mist_frag_glsl); + + e_data.mist_sh = DRW_shader_create_fullscreen(frag_str, "#define FIRST_PASS\n"); + + MEM_freeN(frag_str); + } + + /* Create FrameBuffer. */ + DRW_texture_ensure_fullscreen_2D(&txl->mist_accum, GPU_R32F, 0); /* Should be enough precision for many samples. */ + + GPU_framebuffer_ensure_config(&fbl->mist_accum_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->mist_accum) + }); + + /* Clear texture. */ + GPU_framebuffer_bind(fbl->mist_accum_fb); + GPU_framebuffer_clear_color(fbl->mist_accum_fb, clear); + + /* Mist settings. */ + if (scene && scene->world) { + g_data->mist_start = scene->world->miststa; + g_data->mist_inv_dist = (scene->world->mistdist > 0.0f) ? 1.0f / scene->world->mistdist : 0.0f; + + switch (scene->world->mistype) { + case WO_MIST_QUADRATIC: + g_data->mist_falloff = 2.0f; + break; + case WO_MIST_LINEAR: + g_data->mist_falloff = 1.0f; + break; + case WO_MIST_INVERSE_QUADRATIC: + g_data->mist_falloff = 0.5f; + break; + } + } + else { + float near = -sldata->common_data.view_vecs[0][2]; + float range = sldata->common_data.view_vecs[1][2]; + /* Fallback */ + g_data->mist_start = near; + g_data->mist_inv_dist = 1.0f / fabsf(range); + g_data->mist_falloff = 1.0f; + } + + /* XXX ??!! WHY? If not it does not match cycles. */ + g_data->mist_falloff *= 0.5f; + + /* Create Pass and shgroup. */ + psl->mist_accum_ps = DRW_pass_create("Mist Accum", DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.mist_sh, psl->mist_accum_ps); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_vec3(grp, "mistSettings", &g_data->mist_start, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); +} + +void EEVEE_mist_output_accumulate(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_PassList *psl = vedata->psl; + + if (fbl->mist_accum_fb != NULL) { + GPU_framebuffer_bind(fbl->mist_accum_fb); + DRW_draw_pass(psl->mist_accum_ps); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + } +} + +void EEVEE_mist_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.mist_sh); +} diff --git a/source/blender/draw/engines/eevee/eevee_motion_blur.c b/source/blender/draw/engines/eevee/eevee_motion_blur.c new file mode 100644 index 00000000000..d2309d20abb --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_motion_blur.c @@ -0,0 +1,215 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_motion_blur.c + * \ingroup draw_engine + * + * Gather all screen space effects technique such as Bloom, Motion Blur, DoF, SSAO, SSR, ... + */ + +#include "DRW_render.h" + +#include "BKE_global.h" /* for G.debug_value */ +#include "BKE_camera.h" +#include "BKE_object.h" +#include "BKE_animsys.h" +#include "BKE_screen.h" + +#include "DNA_anim_types.h" +#include "DNA_camera_types.h" +#include "DNA_screen_types.h" + +#include "ED_screen.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" +#include "GPU_texture.h" + +static struct { + /* Motion Blur */ + struct GPUShader *motion_blur_sh; +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_effect_motion_blur_frag_glsl[]; + +static void eevee_motion_blur_camera_get_matrix_at_time( + Scene *scene, + ARegion *ar, RegionView3D *rv3d, View3D *v3d, + Object *camera, + float time, + float r_mat[4][4]) +{ + float obmat[4][4]; + + /* HACK */ + Object cam_cpy; Camera camdata_cpy; + memcpy(&cam_cpy, camera, sizeof(cam_cpy)); + memcpy(&camdata_cpy, camera->data, sizeof(camdata_cpy)); + cam_cpy.data = &camdata_cpy; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + + /* Past matrix */ + /* FIXME : This is a temporal solution that does not take care of parent animations */ + /* Recalc Anim manually */ + BKE_animsys_evaluate_animdata(draw_ctx->depsgraph, scene, &cam_cpy.id, cam_cpy.adt, time, ADT_RECALC_ALL); + BKE_animsys_evaluate_animdata(draw_ctx->depsgraph, scene, &camdata_cpy.id, camdata_cpy.adt, time, ADT_RECALC_ALL); + BKE_object_where_is_calc_time(draw_ctx->depsgraph, scene, &cam_cpy, time); + + /* Compute winmat */ + CameraParams params; + BKE_camera_params_init(¶ms); + + if (v3d != NULL) { + BKE_camera_params_from_view3d(¶ms, draw_ctx->depsgraph, v3d, rv3d); + BKE_camera_params_compute_viewplane(¶ms, ar->winx, ar->winy, 1.0f, 1.0f); + } + else { + BKE_camera_params_from_object(¶ms, &cam_cpy); + BKE_camera_params_compute_viewplane(¶ms, scene->r.xsch, scene->r.ysch, scene->r.xasp, scene->r.yasp); + } + + BKE_camera_params_compute_matrix(¶ms); + + /* FIXME Should be done per view (MULTIVIEW) */ + normalize_m4_m4(obmat, cam_cpy.obmat); + invert_m4(obmat); + mul_m4_m4m4(r_mat, params.winmat, obmat); +} + +static void eevee_create_shader_motion_blur(void) +{ + e_data.motion_blur_sh = DRW_shader_create_fullscreen(datatoc_effect_motion_blur_frag_glsl, NULL); +} + +int EEVEE_motion_blur_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata, Object *camera) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + Scene *scene = draw_ctx->scene; + + View3D *v3d = draw_ctx->v3d; + RegionView3D *rv3d = draw_ctx->rv3d; + ARegion *ar = draw_ctx->ar; + + if (scene_eval->eevee.flag & SCE_EEVEE_MOTION_BLUR_ENABLED) { + /* Update Motion Blur Matrices */ + if (camera) { + float persmat[4][4]; + float ctime = DEG_get_ctime(draw_ctx->depsgraph); + float delta = scene_eval->eevee.motion_blur_shutter; + Object *ob_camera_eval = DEG_get_evaluated_object(draw_ctx->depsgraph, camera); + + /* Current matrix */ + eevee_motion_blur_camera_get_matrix_at_time( + scene, + ar, rv3d, v3d, + ob_camera_eval, + ctime, + effects->current_ndc_to_world); + + /* Viewport Matrix */ + DRW_viewport_matrix_get(persmat, DRW_MAT_PERS); + + /* Only continue if camera is not being keyed */ + if (DRW_state_is_image_render() || + compare_m4m4(persmat, effects->current_ndc_to_world, 0.0001f)) + { + /* Past matrix */ + eevee_motion_blur_camera_get_matrix_at_time( + scene, + ar, rv3d, v3d, + ob_camera_eval, + ctime - delta, + effects->past_world_to_ndc); + +#if 0 /* for future high quality blur */ + /* Future matrix */ + eevee_motion_blur_camera_get_matrix_at_time( + scene, + ar, rv3d, v3d, + ob_camera_eval, + ctime + delta, + effects->future_world_to_ndc); +#endif + invert_m4(effects->current_ndc_to_world); + + effects->motion_blur_samples = scene_eval->eevee.motion_blur_samples; + + if (!e_data.motion_blur_sh) { + eevee_create_shader_motion_blur(); + } + + return EFFECT_MOTION_BLUR | EFFECT_POST_BUFFER; + } + } + } + + return 0; +} + +void EEVEE_motion_blur_cache_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + + if ((effects->enabled_effects & EFFECT_MOTION_BLUR) != 0) { + psl->motion_blur = DRW_pass_create("Motion Blur", DRW_STATE_WRITE_COLOR); + + DRWShadingGroup *grp = DRW_shgroup_create(e_data.motion_blur_sh, psl->motion_blur); + DRW_shgroup_uniform_int(grp, "samples", &effects->motion_blur_samples, 1); + DRW_shgroup_uniform_mat4(grp, "currInvViewProjMatrix", effects->current_ndc_to_world); + DRW_shgroup_uniform_mat4(grp, "pastViewProjMatrix", effects->past_world_to_ndc); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &effects->source_buffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_call_add(grp, quad, NULL); + } +} + +void EEVEE_motion_blur_draw(EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + /* Motion Blur */ + if ((effects->enabled_effects & EFFECT_MOTION_BLUR) != 0) { + GPU_framebuffer_bind(effects->target_buffer); + DRW_draw_pass(psl->motion_blur); + SWAP_BUFFERS(); + } +} + +void EEVEE_motion_blur_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.motion_blur_sh); +} diff --git a/source/blender/draw/engines/eevee/eevee_occlusion.c b/source/blender/draw/engines/eevee/eevee_occlusion.c new file mode 100644 index 00000000000..03aee102136 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_occlusion.c @@ -0,0 +1,315 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_occlusion.c + * \ingroup draw_engine + * + * Implementation of the screen space Ground Truth Ambient Occlusion. + */ + +#include "DRW_render.h" + +#include "BLI_string_utils.h" + +#include "DNA_anim_types.h" + +#include "DEG_depsgraph_query.h" + +#include "BKE_global.h" /* for G.debug_value */ + +#include "eevee_private.h" + +#include "GPU_extensions.h" +#include "GPU_state.h" + +static struct { + /* Ground Truth Ambient Occlusion */ + struct GPUShader *gtao_sh; + struct GPUShader *gtao_layer_sh; + struct GPUShader *gtao_debug_sh; + struct GPUTexture *src_depth; +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_ambient_occlusion_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_effect_gtao_frag_glsl[]; + +static void eevee_create_shader_occlusion(void) +{ + char *frag_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_ambient_occlusion_lib_glsl, + datatoc_effect_gtao_frag_glsl); + + e_data.gtao_sh = DRW_shader_create_fullscreen(frag_str, NULL); + e_data.gtao_layer_sh = DRW_shader_create_fullscreen(frag_str, "#define LAYERED_DEPTH\n"); + e_data.gtao_debug_sh = DRW_shader_create_fullscreen(frag_str, "#define DEBUG_AO\n"); + + MEM_freeN(frag_str); +} + +int EEVEE_occlusion_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (scene_eval->eevee.flag & SCE_EEVEE_GTAO_ENABLED) { + const float *viewport_size = DRW_viewport_size_get(); + const int fs_size[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + + /* Shaders */ + if (!e_data.gtao_sh) { + eevee_create_shader_occlusion(); + } + + common_data->ao_dist = scene_eval->eevee.gtao_distance; + common_data->ao_factor = scene_eval->eevee.gtao_factor; + common_data->ao_quality = 1.0f - scene_eval->eevee.gtao_quality; + + common_data->ao_settings = 1.0f; /* USE_AO */ + if (scene_eval->eevee.flag & SCE_EEVEE_GTAO_BENT_NORMALS) { + common_data->ao_settings += 2.0f; /* USE_BENT_NORMAL */ + } + if (scene_eval->eevee.flag & SCE_EEVEE_GTAO_BOUNCE) { + common_data->ao_settings += 4.0f; /* USE_DENOISE */ + } + + common_data->ao_bounce_fac = (scene_eval->eevee.flag & SCE_EEVEE_GTAO_BOUNCE) ? 1.0f : 0.0f; + + effects->gtao_horizons = DRW_texture_pool_query_2D(fs_size[0], fs_size[1], GPU_RGBA8, + &draw_engine_eevee_type); + GPU_framebuffer_ensure_config(&fbl->gtao_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->gtao_horizons) + }); + + if (G.debug_value == 6) { + effects->gtao_horizons_debug = DRW_texture_pool_query_2D(fs_size[0], fs_size[1], GPU_RGBA8, + &draw_engine_eevee_type); + GPU_framebuffer_ensure_config(&fbl->gtao_debug_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->gtao_horizons_debug) + }); + } + else { + effects->gtao_horizons_debug = NULL; + } + + return EFFECT_GTAO | EFFECT_NORMAL_BUFFER; + } + + /* Cleanup */ + effects->gtao_horizons = NULL; + GPU_FRAMEBUFFER_FREE_SAFE(fbl->gtao_fb); + common_data->ao_settings = 0.0f; + + return 0; +} + +void EEVEE_occlusion_output_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_PassList *psl = vedata->psl; + EEVEE_EffectsInfo *effects = stl->effects; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (scene_eval->eevee.flag & SCE_EEVEE_GTAO_ENABLED) { + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + float clear[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + + DRW_texture_ensure_fullscreen_2D(&txl->ao_accum, GPU_R32F, 0); /* Should be enough precision for many samples. */ + + GPU_framebuffer_ensure_config(&fbl->ao_accum_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->ao_accum) + }); + + /* Clear texture. */ + GPU_framebuffer_bind(fbl->ao_accum_fb); + GPU_framebuffer_clear_color(fbl->ao_accum_fb, clear); + + /* Accumulation pass */ + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE; + psl->ao_accum_ps = DRW_pass_create("AO Accum", state); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.gtao_debug_sh, psl->ao_accum_ps); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "maxzBuffer", &txl->maxzbuffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &effects->ssr_normal_input); + DRW_shgroup_uniform_texture_ref(grp, "horizonBuffer", &effects->gtao_horizons); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + else { + /* Cleanup to release memory */ + DRW_TEXTURE_FREE_SAFE(txl->ao_accum); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->ao_accum_fb); + } +} + +void EEVEE_occlusion_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + + if ((effects->enabled_effects & EFFECT_GTAO) != 0) { + /** Occlusion algorithm overview + * + * We separate the computation into 2 steps. + * + * - First we scan the neighborhood pixels to find the maximum horizon angle. + * We save this angle in a RG8 array texture. + * + * - Then we use this angle to compute occlusion with the shading normal at + * the shading stage. This let us do correct shadowing for each diffuse / specular + * lobe present in the shader using the correct normal. + **/ + psl->ao_horizon_search = DRW_pass_create("GTAO Horizon Search", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.gtao_sh, psl->ao_horizon_search); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "maxzBuffer", &txl->maxzbuffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &effects->ao_src_depth); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_call_add(grp, quad, NULL); + + psl->ao_horizon_search_layer = DRW_pass_create("GTAO Horizon Search Layer", DRW_STATE_WRITE_COLOR); + grp = DRW_shgroup_create(e_data.gtao_layer_sh, psl->ao_horizon_search_layer); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "maxzBuffer", &txl->maxzbuffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBufferLayered", &effects->ao_src_depth); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_int(grp, "layer", &stl->effects->ao_depth_layer, 1); + DRW_shgroup_call_add(grp, quad, NULL); + + if (G.debug_value == 6) { + psl->ao_horizon_debug = DRW_pass_create("GTAO Horizon Debug", DRW_STATE_WRITE_COLOR); + grp = DRW_shgroup_create(e_data.gtao_debug_sh, psl->ao_horizon_debug); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "maxzBuffer", &txl->maxzbuffer); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &effects->ssr_normal_input); + DRW_shgroup_uniform_texture_ref(grp, "horizonBuffer", &effects->gtao_horizons); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_call_add(grp, quad, NULL); + } + } +} + +void EEVEE_occlusion_compute( + EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata, struct GPUTexture *depth_src, int layer) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_GTAO) != 0) { + DRW_stats_group_start("GTAO Horizon Scan"); + effects->ao_src_depth = depth_src; + effects->ao_depth_layer = layer; + + GPU_framebuffer_bind(fbl->gtao_fb); + + if (layer >= 0) { + DRW_draw_pass(psl->ao_horizon_search_layer); + } + else { + DRW_draw_pass(psl->ao_horizon_search); + } + + if (GPU_mip_render_workaround()) { + /* Fix dot corruption on intel HD5XX/HD6XX series. + * It seems affected drivers are the same that needs + * GPU_mip_render_workaround. */ + GPU_flush(); + } + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + + DRW_stats_group_end(); + } +} + +void EEVEE_occlusion_draw_debug(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if (((effects->enabled_effects & EFFECT_GTAO) != 0) && (G.debug_value == 6)) { + DRW_stats_group_start("GTAO Debug"); + + GPU_framebuffer_bind(fbl->gtao_debug_fb); + DRW_draw_pass(psl->ao_horizon_debug); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + + DRW_stats_group_end(); + } +} + +void EEVEE_occlusion_output_accumulate(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_PassList *psl = vedata->psl; + + if (fbl->ao_accum_fb != NULL) { + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + /* Update the min_max/horizon buffers so the refracion materials appear in it. */ + EEVEE_create_minmax_buffer(vedata, dtxl->depth, -1); + EEVEE_occlusion_compute(sldata, vedata, dtxl->depth, -1); + + GPU_framebuffer_bind(fbl->ao_accum_fb); + DRW_draw_pass(psl->ao_accum_ps); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + } +} + +void EEVEE_occlusion_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.gtao_sh); + DRW_SHADER_FREE_SAFE(e_data.gtao_layer_sh); + DRW_SHADER_FREE_SAFE(e_data.gtao_debug_sh); +} diff --git a/source/blender/draw/engines/eevee/eevee_private.h b/source/blender/draw/engines/eevee/eevee_private.h new file mode 100644 index 00000000000..451b1013103 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_private.h @@ -0,0 +1,1054 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_private.h + * \ingroup DNA + */ + +#ifndef __EEVEE_PRIVATE_H__ +#define __EEVEE_PRIVATE_H__ + +#include "DNA_lightprobe_types.h" + +struct Object; +struct EEVEE_BoundSphere; +struct EEVEE_ShadowCasterBuffer; +struct RenderLayer; +struct RenderResult; +struct GPUFrameBuffer; + +extern struct DrawEngineType draw_engine_eevee_type; + +/* Minimum UBO is 16384 bytes */ +#define MAX_PROBE 128 /* TODO : find size by dividing UBO max size by probe data size */ +#define MAX_GRID 64 /* TODO : find size by dividing UBO max size by grid data size */ +#define MAX_PLANAR 16 /* TODO : find size by dividing UBO max size by grid data size */ +#define MAX_LIGHT 128 /* TODO : find size by dividing UBO max size by light data size */ +#define MAX_CASCADE_NUM 4 +#define MAX_SHADOW 256 /* TODO : Make this depends on GL_MAX_ARRAY_TEXTURE_LAYERS */ +#define MAX_SHADOW_CASCADE 8 +#define MAX_SHADOW_CUBE (MAX_SHADOW - MAX_CASCADE_NUM * MAX_SHADOW_CASCADE) +#define MAX_BLOOM_STEP 16 + +/* Only define one of these. */ +// #define IRRADIANCE_SH_L2 +// #define IRRADIANCE_CUBEMAP +#define IRRADIANCE_HL2 +#define HAMMERSLEY_SIZE 1024 + +#if defined(IRRADIANCE_SH_L2) +# define SHADER_IRRADIANCE "#define IRRADIANCE_SH_L2\n" +#elif defined(IRRADIANCE_CUBEMAP) +# define SHADER_IRRADIANCE "#define IRRADIANCE_CUBEMAP\n" +#elif defined(IRRADIANCE_HL2) +# define SHADER_IRRADIANCE "#define IRRADIANCE_HL2\n" +#endif + +#define SHADER_DEFINES \ + "#define EEVEE_ENGINE\n" \ + "#define MAX_PROBE " STRINGIFY(MAX_PROBE) "\n" \ + "#define MAX_GRID " STRINGIFY(MAX_GRID) "\n" \ + "#define MAX_PLANAR " STRINGIFY(MAX_PLANAR) "\n" \ + "#define MAX_LIGHT " STRINGIFY(MAX_LIGHT) "\n" \ + "#define MAX_SHADOW " STRINGIFY(MAX_SHADOW) "\n" \ + "#define MAX_SHADOW_CUBE " STRINGIFY(MAX_SHADOW_CUBE) "\n" \ + "#define MAX_SHADOW_CASCADE " STRINGIFY(MAX_SHADOW_CASCADE) "\n" \ + "#define MAX_CASCADE_NUM " STRINGIFY(MAX_CASCADE_NUM) "\n" \ + SHADER_IRRADIANCE + +#define SWAP_DOUBLE_BUFFERS() { \ + if (effects->swap_double_buffer) { \ + SWAP(struct GPUFrameBuffer *, fbl->main_fb, fbl->double_buffer_fb); \ + SWAP(struct GPUFrameBuffer *, fbl->main_color_fb, fbl->double_buffer_color_fb); \ + SWAP(GPUTexture *, txl->color, txl->color_double_buffer); \ + effects->swap_double_buffer = false; \ + } \ +} ((void)0) + +#define SWAP_BUFFERS() { \ + if (effects->target_buffer == fbl->effect_color_fb) { \ + SWAP_DOUBLE_BUFFERS(); \ + effects->source_buffer = txl->color_post; \ + effects->target_buffer = fbl->main_color_fb; \ + } \ + else { \ + SWAP_DOUBLE_BUFFERS(); \ + effects->source_buffer = txl->color; \ + effects->target_buffer = fbl->effect_color_fb; \ + } \ +} ((void)0) + +#define SWAP_BUFFERS_TAA() { \ + if (effects->target_buffer == fbl->effect_color_fb) { \ + SWAP(struct GPUFrameBuffer *, fbl->effect_fb, fbl->taa_history_fb); \ + SWAP(struct GPUFrameBuffer *, fbl->effect_color_fb, fbl->taa_history_color_fb); \ + SWAP(GPUTexture *, txl->color_post, txl->taa_history); \ + effects->source_buffer = txl->taa_history; \ + effects->target_buffer = fbl->effect_color_fb; \ + } \ + else { \ + SWAP(struct GPUFrameBuffer *, fbl->main_fb, fbl->taa_history_fb); \ + SWAP(struct GPUFrameBuffer *, fbl->main_color_fb, fbl->taa_history_color_fb); \ + SWAP(GPUTexture *, txl->color, txl->taa_history); \ + effects->source_buffer = txl->taa_history; \ + effects->target_buffer = fbl->main_color_fb; \ + } \ +} ((void)0) + +#define OVERLAY_ENABLED(v3d) ((v3d) && (v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) +#define LOOK_DEV_MODE_ENABLED(v3d) ((v3d) && (v3d->shading.type == OB_MATERIAL)) +#define LOOK_DEV_OVERLAY_ENABLED(v3d) (LOOK_DEV_MODE_ENABLED(v3d) && OVERLAY_ENABLED(v3d) && (v3d->overlay.flag & V3D_OVERLAY_LOOK_DEV)) +#define USE_SCENE_LIGHT(v3d) ((!v3d) || (!LOOK_DEV_MODE_ENABLED(v3d)) || ((LOOK_DEV_MODE_ENABLED(v3d) && (v3d->shading.flag & V3D_SHADING_SCENE_LIGHTS)))) +#define LOOK_DEV_STUDIO_LIGHT_ENABLED(v3d) (LOOK_DEV_MODE_ENABLED(v3d) && !(v3d->shading.flag & V3D_SHADING_SCENE_WORLD)) + +#define OCTAHEDRAL_SIZE_FROM_CUBESIZE(cube_size) ((int)ceilf(sqrtf((cube_size * cube_size) * 6.0f))) +#define MIN_CUBE_LOD_LEVEL 3 +#define MAX_PLANAR_LOD_LEVEL 9 + +/* World shader variations */ +enum { + VAR_WORLD_BACKGROUND = 0, + VAR_WORLD_PROBE = 1, + VAR_WORLD_VOLUME = 2, +}; + +/* Material shader variations */ +enum { + VAR_MAT_MESH = (1 << 0), + VAR_MAT_PROBE = (1 << 1), + VAR_MAT_HAIR = (1 << 2), + VAR_MAT_FLAT = (1 << 3), + VAR_MAT_BLEND = (1 << 4), + VAR_MAT_VSM = (1 << 5), + VAR_MAT_ESM = (1 << 6), + VAR_MAT_VOLUME = (1 << 7), + VAR_MAT_LOOKDEV = (1 << 8), + /* Max number of variation */ + /* IMPORTANT : Leave it last and set + * it's value accordingly. */ + VAR_MAT_MAX = (1 << 9), + /* These are options that are not counted in VAR_MAT_MAX + * because they are not cumulative with the others above. */ + VAR_MAT_CLIP = (1 << 10), + VAR_MAT_HASH = (1 << 11), + VAR_MAT_MULT = (1 << 12), + VAR_MAT_SHADOW = (1 << 13), + VAR_MAT_REFRACT = (1 << 14), + VAR_MAT_SSS = (1 << 15), + VAR_MAT_TRANSLUC = (1 << 16), + VAR_MAT_SSSALBED = (1 << 17), +}; + +/* ************ PROBE UBO ************* */ + +/* They are the same struct as their Cache siblings. + * typedef'ing just to keep the naming consistent with + * other eevee types. */ +typedef LightProbeCache EEVEE_LightProbe; +typedef LightGridCache EEVEE_LightGrid; + +typedef struct EEVEE_PlanarReflection { + float plane_equation[4]; + float clip_vec_x[3], attenuation_scale; + float clip_vec_y[3], attenuation_bias; + float clip_edge_x_pos, clip_edge_x_neg; + float clip_edge_y_pos, clip_edge_y_neg; + float facing_scale, facing_bias, clipsta, pad; + float reflectionmat[4][4]; /* Used for sampling the texture. */ + float mtx[4][4]; /* Not used in shader. TODO move elsewhere. */ +} EEVEE_PlanarReflection; + +/* --------------------------------------- */ + +typedef struct EEVEE_BoundSphere { + float center[3], radius; +} EEVEE_BoundSphere; + +typedef struct EEVEE_BoundBox { + float center[3], halfdim[3]; +} EEVEE_BoundBox; + +typedef struct EEVEE_PassList { + /* Shadows */ + struct DRWPass *shadow_pass; + struct DRWPass *shadow_cube_copy_pass; + struct DRWPass *shadow_cube_store_pass; + struct DRWPass *shadow_cube_store_high_pass; + struct DRWPass *shadow_cascade_copy_pass; + struct DRWPass *shadow_cascade_store_pass; + struct DRWPass *shadow_cascade_store_high_pass; + + /* Probes */ + struct DRWPass *probe_background; + struct DRWPass *probe_glossy_compute; + struct DRWPass *probe_diffuse_compute; + struct DRWPass *probe_visibility_compute; + struct DRWPass *probe_grid_fill; + struct DRWPass *probe_display; + struct DRWPass *probe_planar_downsample_ps; + + /* Effects */ + struct DRWPass *ao_horizon_search; + struct DRWPass *ao_horizon_search_layer; + struct DRWPass *ao_horizon_debug; + struct DRWPass *ao_accum_ps; + struct DRWPass *mist_accum_ps; + struct DRWPass *motion_blur; + struct DRWPass *bloom_blit; + struct DRWPass *bloom_downsample_first; + struct DRWPass *bloom_downsample; + struct DRWPass *bloom_upsample; + struct DRWPass *bloom_resolve; + struct DRWPass *dof_down; + struct DRWPass *dof_scatter; + struct DRWPass *dof_resolve; + struct DRWPass *volumetric_world_ps; + struct DRWPass *volumetric_objects_ps; + struct DRWPass *volumetric_scatter_ps; + struct DRWPass *volumetric_integration_ps; + struct DRWPass *volumetric_resolve_ps; + struct DRWPass *ssr_raytrace; + struct DRWPass *ssr_resolve; + struct DRWPass *sss_blur_ps; + struct DRWPass *sss_resolve_ps; + struct DRWPass *sss_accum_ps; + struct DRWPass *color_downsample_ps; + struct DRWPass *color_downsample_cube_ps; + struct DRWPass *velocity_resolve; + struct DRWPass *taa_resolve; + + /* HiZ */ + struct DRWPass *minz_downlevel_ps; + struct DRWPass *maxz_downlevel_ps; + struct DRWPass *minz_downdepth_ps; + struct DRWPass *maxz_downdepth_ps; + struct DRWPass *minz_downdepth_layer_ps; + struct DRWPass *maxz_downdepth_layer_ps; + struct DRWPass *minz_copydepth_ps; + struct DRWPass *maxz_copydepth_ps; + struct DRWPass *maxz_copydepth_layer_ps; + + struct DRWPass *depth_pass; + struct DRWPass *depth_pass_cull; + struct DRWPass *depth_pass_clip; + struct DRWPass *depth_pass_clip_cull; + struct DRWPass *refract_depth_pass; + struct DRWPass *refract_depth_pass_cull; + struct DRWPass *refract_depth_pass_clip; + struct DRWPass *refract_depth_pass_clip_cull; + struct DRWPass *default_pass[VAR_MAT_MAX]; + struct DRWPass *sss_pass; + struct DRWPass *material_pass; + struct DRWPass *refract_pass; + struct DRWPass *transparent_pass; + struct DRWPass *background_pass; + struct DRWPass *update_noise_pass; + struct DRWPass *lookdev_pass; +} EEVEE_PassList; + +typedef struct EEVEE_FramebufferList { + /* Effects */ + struct GPUFrameBuffer *gtao_fb; + struct GPUFrameBuffer *gtao_debug_fb; + struct GPUFrameBuffer *downsample_fb; + struct GPUFrameBuffer *bloom_blit_fb; + struct GPUFrameBuffer *bloom_down_fb[MAX_BLOOM_STEP]; + struct GPUFrameBuffer *bloom_accum_fb[MAX_BLOOM_STEP - 1]; + struct GPUFrameBuffer *sss_blur_fb; + struct GPUFrameBuffer *sss_blit_fb; + struct GPUFrameBuffer *sss_resolve_fb; + struct GPUFrameBuffer *sss_clear_fb; + struct GPUFrameBuffer *sss_accum_fb; + struct GPUFrameBuffer *dof_down_fb; + struct GPUFrameBuffer *dof_scatter_fb; + struct GPUFrameBuffer *volumetric_fb; + struct GPUFrameBuffer *volumetric_scat_fb; + struct GPUFrameBuffer *volumetric_integ_fb; + struct GPUFrameBuffer *screen_tracing_fb; + struct GPUFrameBuffer *refract_fb; + struct GPUFrameBuffer *mist_accum_fb; + struct GPUFrameBuffer *ao_accum_fb; + struct GPUFrameBuffer *velocity_resolve_fb; + + struct GPUFrameBuffer *update_noise_fb; + + struct GPUFrameBuffer *planarref_fb; + struct GPUFrameBuffer *planar_downsample_fb; + + struct GPUFrameBuffer *main_fb; + struct GPUFrameBuffer *main_color_fb; + struct GPUFrameBuffer *effect_fb; + struct GPUFrameBuffer *effect_color_fb; + struct GPUFrameBuffer *double_buffer_fb; + struct GPUFrameBuffer *double_buffer_color_fb; + struct GPUFrameBuffer *double_buffer_depth_fb; + struct GPUFrameBuffer *taa_history_fb; + struct GPUFrameBuffer *taa_history_color_fb; +} EEVEE_FramebufferList; + +typedef struct EEVEE_TextureList { + /* Effects */ + struct GPUTexture *color_post; /* R16_G16_B16 */ + struct GPUTexture *mist_accum; + struct GPUTexture *ao_accum; + struct GPUTexture *sss_dir_accum; + struct GPUTexture *sss_col_accum; + struct GPUTexture *refract_color; + struct GPUTexture *taa_history; + + struct GPUTexture *volume_prop_scattering; + struct GPUTexture *volume_prop_extinction; + struct GPUTexture *volume_prop_emission; + struct GPUTexture *volume_prop_phase; + struct GPUTexture *volume_scatter; + struct GPUTexture *volume_transmittance; + struct GPUTexture *volume_scatter_history; + struct GPUTexture *volume_transmittance_history; + + struct GPUTexture *lookdev_grid_tx; + struct GPUTexture *lookdev_cube_tx; + + struct GPUTexture *planar_pool; + struct GPUTexture *planar_depth; + + struct GPUTexture *maxzbuffer; + + struct GPUTexture *color; /* R16_G16_B16 */ + struct GPUTexture *color_double_buffer; + struct GPUTexture *depth_double_buffer; +} EEVEE_TextureList; + +typedef struct EEVEE_StorageList { + /* Effects */ + struct EEVEE_EffectsInfo *effects; + + struct EEVEE_PrivateData *g_data; + + struct LightCache *lookdev_lightcache; + EEVEE_LightProbe *lookdev_cube_data; + EEVEE_LightGrid *lookdev_grid_data; + LightCacheTexture *lookdev_cube_mips; +} EEVEE_StorageList; + +/* ************ LIGHT UBO ************* */ +typedef struct EEVEE_Light { + float position[3], invsqrdist; + float color[3], spec; + float spotsize, spotblend, radius, shadowid; + float rightvec[3], sizex; + float upvec[3], sizey; + float forwardvec[3], lamptype; +} EEVEE_Light; + +/* Special type for elliptic area lamps, matches lamps_lib.glsl */ +#define LAMPTYPE_AREA_ELLIPSE 100.0f + +typedef struct EEVEE_Shadow { + float near, far, bias, exp; + float shadow_start, data_start, multi_shadow_count, shadow_blur; + float contact_dist, contact_bias, contact_spread, contact_thickness; +} EEVEE_Shadow; + +typedef struct EEVEE_ShadowCube { + float position[3], pad; +} EEVEE_ShadowCube; + +typedef struct EEVEE_ShadowCascade { + float shadowmat[MAX_CASCADE_NUM][4][4]; /* World->Lamp->NDC->Tex : used for sampling the shadow map. */ + float split_start[4]; + float split_end[4]; +} EEVEE_ShadowCascade; + +typedef struct EEVEE_ShadowRender { + float position[3], pad; + float cube_texel_size; + float stored_texel_size; + float clip_near; + float clip_far; + int shadow_samples_len; + float shadow_samples_len_inv; + float exponent; +} EEVEE_ShadowRender; + +/* This is just a really long bitflag with special function to access it. */ +#define MAX_LIGHTBITS_FIELDS (MAX_LIGHT / 8) +typedef struct EEVEE_LightBits { + uchar fields[MAX_LIGHTBITS_FIELDS]; +} EEVEE_LightBits; + +typedef struct EEVEE_ShadowCaster { + struct EEVEE_LightBits bits; + struct EEVEE_BoundBox bbox; +} EEVEE_ShadowCaster; + +typedef struct EEVEE_ShadowCasterBuffer { + struct EEVEE_ShadowCaster *shadow_casters; + char *flags; + uint alloc_count; + uint count; +} EEVEE_ShadowCasterBuffer; + +/* ************ LIGHT DATA ************* */ +typedef struct EEVEE_LampsInfo { + int num_light, cache_num_light; + int num_cube_layer, cache_num_cube_layer; + int num_cascade_layer, cache_num_cascade_layer; + int gpu_cube_len, gpu_cascade_len, gpu_shadow_len; + int cpu_cube_len, cpu_cascade_len; + int update_flag; + int shadow_cube_size, shadow_cascade_size, shadow_method; + bool shadow_high_bitdepth, soft_shadows; + int shadow_cube_store_size; + int current_shadow_cascade; + int current_shadow_face; + uint shadow_instance_count; + float filter_size; + /* List of lights in the scene. */ + /* XXX This is fragile, can get out of sync quickly. */ + struct Object *light_ref[MAX_LIGHT]; + struct Object *shadow_cube_ref[MAX_SHADOW_CUBE]; + struct Object *shadow_cascade_ref[MAX_SHADOW_CASCADE]; + /* UBO Storage : data used by UBO */ + struct EEVEE_Light light_data[MAX_LIGHT]; + struct EEVEE_ShadowRender shadow_render_data; + struct EEVEE_Shadow shadow_data[MAX_SHADOW]; + struct EEVEE_ShadowCube shadow_cube_data[MAX_SHADOW_CUBE]; + struct EEVEE_ShadowCascade shadow_cascade_data[MAX_SHADOW_CASCADE]; + /* Lights tracking */ + int new_shadow_id[MAX_LIGHT]; /* To be able to convert old bitfield to new bitfield */ + struct EEVEE_BoundSphere shadow_bounds[MAX_LIGHT]; /* Tightly packed light bounds */ + /* Pointers only. */ + struct EEVEE_ShadowCasterBuffer *shcaster_frontbuffer; + struct EEVEE_ShadowCasterBuffer *shcaster_backbuffer; +} EEVEE_LampsInfo; + +/* EEVEE_LampsInfo->shadow_casters_flag */ +enum { + SHADOW_CASTER_PRUNED = (1 << 0), + SHADOW_CASTER_UPDATED = (1 << 1), +}; + +/* EEVEE_LampsInfo->update_flag */ +enum { + LIGHT_UPDATE_SHADOW_CUBE = (1 << 0), +}; + +/* ************ PROBE DATA ************* */ +typedef struct EEVEE_LightProbeVisTest { + struct Collection *collection; /* Skip test if NULL */ + bool invert; + bool cached; /* Reuse last test results */ +} EEVEE_LightProbeVisTest; + +typedef struct EEVEE_LightProbesInfo { + int num_cube, cache_num_cube; + int num_grid, cache_num_grid; + int num_planar, cache_num_planar; + int total_irradiance_samples; /* Total for all grids */ + int cache_irradiance_size[3]; + int update_flag; + int updated_bounce; + int num_bounce; + int cubemap_res; + /* Update */ + bool do_cube_update; + bool do_grid_update; + /* For rendering probes */ + float probemat[6][4][4]; + int layer; + float texel_size; + float padding_size; + float samples_len; + float samples_len_inv; + float near_clip; + float far_clip; + float roughness; + float firefly_fac; + float lodfactor; + float lod_rt_max, lod_cube_max, lod_planar_max; + float visibility_range; + float visibility_blur; + float intensity_fac; + int shres; + int studiolight_index; + float studiolight_rot_z; + EEVEE_LightProbeVisTest planar_vis_tests[MAX_PLANAR]; + /* UBO Storage : data used by UBO */ + EEVEE_LightProbe probe_data[MAX_PROBE]; + EEVEE_LightGrid grid_data[MAX_GRID]; + EEVEE_PlanarReflection planar_data[MAX_PLANAR]; + /* Probe Visibility Collection */ + EEVEE_LightProbeVisTest vis_data; +} EEVEE_LightProbesInfo; + +/* EEVEE_LightProbesInfo->update_flag */ +enum { + PROBE_UPDATE_CUBE = (1 << 0), + PROBE_UPDATE_GRID = (1 << 1), + PROBE_UPDATE_ALL = 0xFFFFFF, +}; + +/* ************ EFFECTS DATA ************* */ + +typedef enum EEVEE_EffectsFlag { + EFFECT_MOTION_BLUR = (1 << 0), + EFFECT_BLOOM = (1 << 1), + EFFECT_DOF = (1 << 2), + EFFECT_VOLUMETRIC = (1 << 3), + EFFECT_SSR = (1 << 4), + EFFECT_DOUBLE_BUFFER = (1 << 5), /* Not really an effect but a feature */ + EFFECT_REFRACT = (1 << 6), + EFFECT_GTAO = (1 << 7), + EFFECT_TAA = (1 << 8), + EFFECT_POST_BUFFER = (1 << 9), /* Not really an effect but a feature */ + EFFECT_NORMAL_BUFFER = (1 << 10), /* Not really an effect but a feature */ + EFFECT_SSS = (1 << 11), + EFFECT_VELOCITY_BUFFER = (1 << 12), /* Not really an effect but a feature */ + EFFECT_TAA_REPROJECT = (1 << 13), /* should be mutually exclusive with EFFECT_TAA */ + EFFECT_DEPTH_DOUBLE_BUFFER = (1 << 14), /* Not really an effect but a feature */ +} EEVEE_EffectsFlag; + +typedef struct EEVEE_EffectsInfo { + EEVEE_EffectsFlag enabled_effects; + bool swap_double_buffer; + /* SSSS */ + int sss_sample_count; + bool sss_separate_albedo; + struct GPUTexture *sss_data; /* Textures from pool */ + struct GPUTexture *sss_albedo; + struct GPUTexture *sss_blur; + struct GPUTexture *sss_stencil; + /* Volumetrics */ + int volume_current_sample; + /* SSR */ + bool reflection_trace_full; + bool ssr_was_persp; + int ssr_neighbor_ofs; + int ssr_halfres_ofs[2]; + struct GPUTexture *ssr_normal_input; /* Textures from pool */ + struct GPUTexture *ssr_specrough_input; + struct GPUTexture *ssr_hit_output; + struct GPUTexture *ssr_pdf_output; + /* Temporal Anti Aliasing */ + int taa_reproject_sample; + int taa_current_sample; + int taa_render_sample; + int taa_total_sample; + float taa_alpha; + bool prev_drw_support; + float prev_drw_persmat[4][4]; + float overide_persmat[4][4]; + float overide_persinv[4][4]; + float overide_winmat[4][4]; + float overide_wininv[4][4]; + /* Ambient Occlusion */ + int ao_depth_layer; + struct GPUTexture *ao_src_depth; /* pointer copy */ + struct GPUTexture *gtao_horizons; /* Textures from pool */ + struct GPUTexture *gtao_horizons_debug; + /* Motion Blur */ + float current_ndc_to_world[4][4]; + float past_world_to_ndc[4][4]; + int motion_blur_samples; + /* Velocity Pass */ + float velocity_curr_persinv[4][4]; + float velocity_past_persmat[4][4]; + struct GPUTexture *velocity_tx; /* Texture from pool */ + /* Depth Of Field */ + float dof_near_far[2]; + float dof_params[3]; + float dof_bokeh[4]; + float dof_bokeh_sides[4]; + int dof_target_size[2]; + struct GPUTexture *dof_down_near; /* Textures from pool */ + struct GPUTexture *dof_down_far; + struct GPUTexture *dof_coc; + struct GPUTexture *dof_blur; + struct GPUTexture *dof_blur_alpha; + /* Other */ + float prev_persmat[4][4]; + /* Bloom */ + int bloom_iteration_len; + float source_texel_size[2]; + float blit_texel_size[2]; + float downsamp_texel_size[MAX_BLOOM_STEP][2]; + float bloom_color[3]; + float bloom_clamp; + float bloom_sample_scale; + float bloom_curve_threshold[4]; + float unf_source_texel_size[2]; + struct GPUTexture *bloom_blit; /* Textures from pool */ + struct GPUTexture *bloom_downsample[MAX_BLOOM_STEP]; + struct GPUTexture *bloom_upsample[MAX_BLOOM_STEP - 1]; + struct GPUTexture *unf_source_buffer; /* pointer copy */ + struct GPUTexture *unf_base_buffer; /* pointer copy */ + /* Not alloced, just a copy of a *GPUtexture in EEVEE_TextureList. */ + struct GPUTexture *source_buffer; /* latest updated texture */ + struct GPUFrameBuffer *target_buffer; /* next target to render to */ + struct GPUTexture *final_tx; /* Final color to transform to display color space. */ + struct GPUFrameBuffer *final_fb; /* Framebuffer with final_tx as attachement. */ +} EEVEE_EffectsInfo; + +/* ***************** COMMON DATA **************** */ + +/* Common uniform buffer containing all "constant" data over the whole drawing pipeline. */ +/* !! CAUTION !! + * - [i]vec3 need to be padded to [i]vec4 (even in ubo declaration). + * - Make sure that [i]vec4 start at a multiple of 16 bytes. + * - Arrays of vec2/vec3 are padded as arrays of vec4. + * - sizeof(bool) == sizeof(int) in GLSL so use int in C */ +typedef struct EEVEE_CommonUniformBuffer { + float prev_persmat[4][4]; /* mat4 */ + float view_vecs[2][4]; /* vec4[2] */ + float mip_ratio[10][4]; /* vec2[10] */ + /* Ambient Occlusion */ + /* -- 16 byte aligned -- */ + float ao_dist, pad1, ao_factor, pad2; /* vec4 */ + float ao_offset, ao_bounce_fac, ao_quality, ao_settings; /* vec4 */ + /* Volumetric */ + /* -- 16 byte aligned -- */ + int vol_tex_size[3], pad3; /* ivec3 */ + float vol_depth_param[3], pad4; /* vec3 */ + float vol_inv_tex_size[3], pad5; /* vec3 */ + float vol_jitter[3], pad6; /* vec3 */ + float vol_coord_scale[2], pad7[2]; /* vec2 */ + /* -- 16 byte aligned -- */ + float vol_history_alpha; /* float */ + float vol_light_clamp; /* float */ + float vol_shadow_steps; /* float */ + int vol_use_lights; /* bool */ + /* Screen Space Reflections */ + /* -- 16 byte aligned -- */ + float ssr_quality, ssr_thickness, ssr_pixelsize[2]; /* vec4 */ + float ssr_border_fac; /* float */ + float ssr_max_roughness; /* float */ + float ssr_firefly_fac; /* float */ + float ssr_brdf_bias; /* float */ + int ssr_toggle; /* bool */ + /* SubSurface Scattering */ + float sss_jitter_threshold; /* float */ + int sss_toggle; /* bool */ + /* Specular */ + int spec_toggle; /* bool */ + /* Lamps */ + int la_num_light; /* int */ + /* Probes */ + int prb_num_planar; /* int */ + int prb_num_render_cube; /* int */ + int prb_num_render_grid; /* int */ + int prb_irradiance_vis_size; /* int */ + float prb_irradiance_smooth; /* float */ + float prb_lod_cube_max; /* float */ + float prb_lod_planar_max; /* float */ + /* Misc */ + int hiz_mip_offset; /* int */ + int ray_type; /* int */ + float ray_depth; /* float */ +} EEVEE_CommonUniformBuffer; + +/* ray_type (keep in sync with rayType) */ +#define EEVEE_RAY_CAMERA 0 +#define EEVEE_RAY_SHADOW 1 +#define EEVEE_RAY_DIFFUSE 2 +#define EEVEE_RAY_GLOSSY 3 + +/* ***************** CLIP PLANES DATA **************** */ + +typedef struct EEVEE_ClipPlanesUniformBuffer { + float clip_planes[1][4]; /* must be less than MAX_CLIP_PLANES */ +} EEVEE_ClipPlanesUniformBuffer; + +/* ************** SCENE LAYER DATA ************** */ +typedef struct EEVEE_ViewLayerData { + /* Lamps */ + struct EEVEE_LampsInfo *lamps; + + struct GPUUniformBuffer *light_ubo; + struct GPUUniformBuffer *shadow_ubo; + struct GPUUniformBuffer *shadow_render_ubo; + struct GPUUniformBuffer *shadow_samples_ubo; + + struct GPUFrameBuffer *shadow_cube_target_fb; + struct GPUFrameBuffer *shadow_cube_store_fb; + struct GPUFrameBuffer *shadow_cascade_target_fb; + struct GPUFrameBuffer *shadow_cascade_store_fb; + + struct GPUTexture *shadow_cube_target; + struct GPUTexture *shadow_cube_blur; + struct GPUTexture *shadow_cascade_target; + struct GPUTexture *shadow_cascade_blur; + struct GPUTexture *shadow_cube_pool; + struct GPUTexture *shadow_cascade_pool; + + struct EEVEE_ShadowCasterBuffer shcasters_buffers[2]; + + /* Probes */ + struct EEVEE_LightProbesInfo *probes; + + struct GPUUniformBuffer *probe_ubo; + struct GPUUniformBuffer *grid_ubo; + struct GPUUniformBuffer *planar_ubo; + + /* Common Uniform Buffer */ + struct EEVEE_CommonUniformBuffer common_data; + struct GPUUniformBuffer *common_ubo; + + struct EEVEE_ClipPlanesUniformBuffer clip_data; + struct GPUUniformBuffer *clip_ubo; + + struct LightCache *fallback_lightcache; +} EEVEE_ViewLayerData; + +/* ************ OBJECT DATA ************ */ + +typedef struct EEVEE_LightData { + short light_id, shadow_id; +} EEVEE_LightData; + +typedef struct EEVEE_ShadowCubeData { + short light_id, shadow_id, cube_id, layer_id; +} EEVEE_ShadowCubeData; + +typedef struct EEVEE_ShadowCascadeData { + short light_id, shadow_id, cascade_id, layer_id; + float viewprojmat[MAX_CASCADE_NUM][4][4]; /* World->Lamp->NDC : used for rendering the shadow map. */ + float projmat[MAX_CASCADE_NUM][4][4]; + float viewmat[4][4], viewinv[4][4]; + float radius[MAX_CASCADE_NUM]; +} EEVEE_ShadowCascadeData; + +/* Theses are the structs stored inside Objects. + * It works with even if the object is in multiple layers + * because we don't get the same "Object *" for each layer. */ +typedef struct EEVEE_LampEngineData { + DrawData dd; + + bool need_update; + /* This needs to be out of the union to avoid undefined behaviour. */ + short prev_cube_shadow_id; + union { + struct EEVEE_LightData ld; + struct EEVEE_ShadowCubeData scd; + struct EEVEE_ShadowCascadeData scad; + } data; +} EEVEE_LampEngineData; + +typedef struct EEVEE_LightProbeEngineData { + DrawData dd; + + bool need_update; +} EEVEE_LightProbeEngineData; + +typedef struct EEVEE_ObjectEngineData { + DrawData dd; + + Object *ob; /* self reference */ + EEVEE_LightProbeVisTest *test_data; + bool ob_vis, ob_vis_dirty; + + bool need_update; + uint shadow_caster_id; +} EEVEE_ObjectEngineData; + +typedef struct EEVEE_WorldEngineData { + DrawData dd; +} EEVEE_WorldEngineData; + +/* *********************************** */ + +typedef struct EEVEE_Data { + void *engine_type; + EEVEE_FramebufferList *fbl; + EEVEE_TextureList *txl; + EEVEE_PassList *psl; + EEVEE_StorageList *stl; +} EEVEE_Data; + +typedef struct EEVEE_PrivateData { + struct DRWShadingGroup *shadow_shgrp; + struct DRWShadingGroup *depth_shgrp; + struct DRWShadingGroup *depth_shgrp_cull; + struct DRWShadingGroup *depth_shgrp_clip; + struct DRWShadingGroup *depth_shgrp_clip_cull; + struct DRWShadingGroup *refract_depth_shgrp; + struct DRWShadingGroup *refract_depth_shgrp_cull; + struct DRWShadingGroup *refract_depth_shgrp_clip; + struct DRWShadingGroup *refract_depth_shgrp_clip_cull; + struct DRWShadingGroup *cube_display_shgrp; + struct DRWShadingGroup *planar_display_shgrp; + struct GHash *material_hash; + float background_alpha; /* TODO find a better place for this. */ + /* Chosen lightcache: can come from Lookdev or the viewlayer. */ + struct LightCache *light_cache; + /* For planar probes */ + float planar_texel_size[2]; + /* For double buffering */ + bool view_updated; + bool valid_double_buffer; + bool valid_taa_history; + /* Render Matrices */ + float persmat[4][4], persinv[4][4]; + float viewmat[4][4], viewinv[4][4]; + float winmat[4][4], wininv[4][4]; + float studiolight_matrix[3][3]; + float overscan, overscan_pixels; + float size_orig[2]; + + /* Mist Settings */ + float mist_start, mist_inv_dist, mist_falloff; + + /* Color Management */ + bool use_color_view_settings; +} EEVEE_PrivateData; /* Transient data */ + +/* eevee_data.c */ +void EEVEE_view_layer_data_free(void *sldata); +EEVEE_ViewLayerData *EEVEE_view_layer_data_get(void); +EEVEE_ViewLayerData *EEVEE_view_layer_data_ensure_ex(struct ViewLayer *view_layer); +EEVEE_ViewLayerData *EEVEE_view_layer_data_ensure(void); +EEVEE_ObjectEngineData *EEVEE_object_data_get(Object *ob); +EEVEE_ObjectEngineData *EEVEE_object_data_ensure(Object *ob); +EEVEE_LightProbeEngineData *EEVEE_lightprobe_data_get(Object *ob); +EEVEE_LightProbeEngineData *EEVEE_lightprobe_data_ensure(Object *ob); +EEVEE_LampEngineData *EEVEE_lamp_data_get(Object *ob); +EEVEE_LampEngineData *EEVEE_lamp_data_ensure(Object *ob); +EEVEE_WorldEngineData *EEVEE_world_data_get(World *wo); +EEVEE_WorldEngineData *EEVEE_world_data_ensure(World *wo); + +/* eevee_materials.c */ +struct GPUTexture *EEVEE_materials_get_util_tex(void); /* XXX */ +void EEVEE_materials_init(EEVEE_ViewLayerData *sldata, EEVEE_StorageList *stl, EEVEE_FramebufferList *fbl); +void EEVEE_materials_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_materials_cache_populate(EEVEE_Data *vedata, EEVEE_ViewLayerData *sldata, Object *ob, bool *cast_shadow); +void EEVEE_hair_cache_populate(EEVEE_Data *vedata, EEVEE_ViewLayerData *sldata, Object *ob, bool *cast_shadow); +void EEVEE_materials_cache_finish(EEVEE_Data *vedata); +struct GPUMaterial *EEVEE_material_world_lightprobe_get(struct Scene *scene, struct World *wo); +struct GPUMaterial *EEVEE_material_world_background_get(struct Scene *scene, struct World *wo); +struct GPUMaterial *EEVEE_material_world_volume_get(struct Scene *scene, struct World *wo); +struct GPUMaterial *EEVEE_material_mesh_get( + struct Scene *scene, Material *ma, EEVEE_Data *vedata, + bool use_blend, bool use_multiply, bool use_refract, bool use_sss, bool use_translucency, int shadow_method); +struct GPUMaterial *EEVEE_material_mesh_volume_get( + struct Scene *scene, Material *ma); +struct GPUMaterial *EEVEE_material_mesh_depth_get( + struct Scene *scene, Material *ma, bool use_hashed_alpha, bool is_shadow); +struct GPUMaterial *EEVEE_material_hair_get(struct Scene *scene, Material *ma, int shadow_method); +void EEVEE_materials_free(void); +void EEVEE_draw_default_passes(EEVEE_PassList *psl); +void EEVEE_update_noise(EEVEE_PassList *psl, EEVEE_FramebufferList *fbl, const double offsets[3]); + +/* eevee_lights.c */ +void EEVEE_lights_init(EEVEE_ViewLayerData *sldata); +void EEVEE_lights_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lights_cache_add(EEVEE_ViewLayerData *sldata, struct Object *ob); +void EEVEE_lights_cache_shcaster_add( + EEVEE_ViewLayerData *sldata, EEVEE_StorageList *stl, struct GPUBatch *geom, Object *ob); +void EEVEE_lights_cache_shcaster_material_add( + EEVEE_ViewLayerData *sldata, EEVEE_PassList *psl, + struct GPUMaterial *gpumat, struct GPUBatch *geom, struct Object *ob, + float *alpha_threshold); +void EEVEE_lights_cache_shcaster_object_add(EEVEE_ViewLayerData *sldata, struct Object *ob); +void EEVEE_lights_cache_finish(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lights_update(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_draw_shadows(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lights_free(void); + + +/* eevee_shaders.c */ +void EEVEE_shaders_lightprobe_shaders_init(void); +struct GPUShader *EEVEE_shaders_probe_filter_glossy_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_default_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_filter_diffuse_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_filter_visibility_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_grid_fill_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_planar_downsample_sh_get(void); +struct GPUShader *EEVEE_shaders_default_studiolight_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_cube_display_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_grid_display_sh_get(void); +struct GPUShader *EEVEE_shaders_probe_planar_display_sh_get(void); +struct GPUShader *EEVEE_shaders_velocity_resolve_sh_get(void); +struct GPUShader *EEVEE_shaders_taa_resolve_sh_get(EEVEE_EffectsFlag enabled_effects); +void EEVEE_shaders_free(void); + +/* eevee_lightprobes.c */ +bool EEVEE_lightprobes_obj_visibility_cb(bool vis_in, void *user_data); +void EEVEE_lightprobes_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lightprobes_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lightprobes_cache_add(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Object *ob); +void EEVEE_lightprobes_cache_finish(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lightprobes_refresh(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lightprobes_refresh_planar(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_lightprobes_free(void); + +void EEVEE_lightbake_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, GPUTexture *rt_color, GPUTexture *rt_depth); +void EEVEE_lightbake_render_world( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUFrameBuffer *face_fb[6]); +void EEVEE_lightbake_render_scene( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUFrameBuffer *face_fb[6], + const float pos[3], float near_clip, float far_clip); +void EEVEE_lightbake_filter_glossy( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUTexture *rt_color, struct GPUFrameBuffer *fb, + int probe_idx, float intensity, int maxlevel, float filter_quality, float firefly_fac); +void EEVEE_lightbake_filter_diffuse( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUTexture *rt_color, struct GPUFrameBuffer *fb, + int grid_offset, float intensity); +void EEVEE_lightbake_filter_visibility( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUTexture *rt_depth, struct GPUFrameBuffer *fb, + int grid_offset, float clipsta, float clipend, float vis_range, float vis_blur, int vis_size); + +void EEVEE_lightprobes_grid_data_from_object(Object *ob, EEVEE_LightGrid *prb_data, int *offset); +void EEVEE_lightprobes_cube_data_from_object(Object *ob, EEVEE_LightProbe *prb_data); +void EEVEE_lightprobes_planar_data_from_object(Object *ob, EEVEE_PlanarReflection *eplanar, EEVEE_LightProbeVisTest *vis_test); + +/* eevee_depth_of_field.c */ +int EEVEE_depth_of_field_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Object *camera); +void EEVEE_depth_of_field_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_depth_of_field_draw(EEVEE_Data *vedata); +void EEVEE_depth_of_field_free(void); + +/* eevee_bloom.c */ +int EEVEE_bloom_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_bloom_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_bloom_draw(EEVEE_Data *vedata); +void EEVEE_bloom_free(void); + +/* eevee_occlusion.c */ +int EEVEE_occlusion_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_occlusion_output_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_occlusion_output_accumulate(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_occlusion_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_occlusion_compute(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct GPUTexture *depth_src, int layer); +void EEVEE_occlusion_draw_debug(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_occlusion_free(void); + +/* eevee_screen_raytrace.c */ +int EEVEE_screen_raytrace_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_screen_raytrace_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_refraction_compute(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_reflection_compute(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_screen_raytrace_free(void); + +/* eevee_subsurface.c */ +int EEVEE_subsurface_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_subsurface_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_subsurface_output_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_subsurface_add_pass( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, uint sss_id, struct GPUUniformBuffer *sss_profile); +void EEVEE_subsurface_data_render(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_subsurface_compute(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_subsurface_output_accumulate(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_subsurface_free(void); + +/* eevee_motion_blur.c */ +int EEVEE_motion_blur_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Object *camera); +void EEVEE_motion_blur_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_motion_blur_draw(EEVEE_Data *vedata); +void EEVEE_motion_blur_free(void); + +/* eevee_mist.c */ +void EEVEE_mist_output_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_mist_output_accumulate(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_mist_free(void); + +/* eevee_temporal_sampling.c */ +void EEVEE_temporal_sampling_reset(EEVEE_Data *vedata); +int EEVEE_temporal_sampling_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_temporal_sampling_matrices_calc( + EEVEE_EffectsInfo *effects, float viewmat[4][4], float persmat[4][4], const double ht_point[2]); +void EEVEE_temporal_sampling_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_temporal_sampling_draw(EEVEE_Data *vedata); + +/* eevee_volumes.c */ +int EEVEE_volumes_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_volumes_set_jitter(EEVEE_ViewLayerData *sldata, uint current_sample); +void EEVEE_volumes_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_volumes_cache_object_add(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, struct Scene *scene, Object *ob); +void EEVEE_volumes_compute(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_volumes_resolve(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_volumes_free_smoke_textures(void); +void EEVEE_volumes_free(void); + +/* eevee_effects.c */ +void EEVEE_effects_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Object *camera, const bool minimal); +void EEVEE_effects_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_create_minmax_buffer(EEVEE_Data *vedata, struct GPUTexture *depth_src, int layer); +void EEVEE_downsample_buffer(EEVEE_Data *vedata, struct GPUTexture *texture_src, int level); +void EEVEE_downsample_cube_buffer(EEVEE_Data *vedata, struct GPUTexture *texture_src, int level); +void EEVEE_effects_do_gtao(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_draw_effects(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata); +void EEVEE_effects_free(void); + +/* eevee_render.c */ +void EEVEE_render_init(EEVEE_Data *vedata, struct RenderEngine *engine, struct Depsgraph *depsgraph); +void EEVEE_render_cache(void *vedata, struct Object *ob, struct RenderEngine *engine, struct Depsgraph *depsgraph); +void EEVEE_render_draw(EEVEE_Data *vedata, struct RenderEngine *engine, struct RenderLayer *render_layer, const struct rcti *rect); +void EEVEE_render_update_passes(struct RenderEngine *engine, struct Scene *scene, struct ViewLayer *view_layer); + +/** eevee_lookdev.c */ +void EEVEE_lookdev_cache_init(EEVEE_Data *vedata, DRWShadingGroup **grp, DRWPass *pass, struct World *world, EEVEE_LightProbesInfo *pinfo); +void EEVEE_lookdev_draw_background(EEVEE_Data *vedata); + +/** eevee_engine.c */ +void EEVEE_cache_populate(void *vedata, Object *ob); + +/* Shadow Matrix */ +static const float texcomat[4][4] = { /* From NDC to TexCo */ + {0.5f, 0.0f, 0.0f, 0.0f}, + {0.0f, 0.5f, 0.0f, 0.0f}, + {0.0f, 0.0f, 0.5f, 0.0f}, + {0.5f, 0.5f, 0.5f, 1.0f} +}; + +/* Cubemap Matrices */ +static const float cubefacemat[6][4][4] = { + /* Pos X */ + {{0.0f, 0.0f, -1.0f, 0.0f}, + {0.0f, -1.0f, 0.0f, 0.0f}, + {-1.0f, 0.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, 1.0f}}, + /* Neg X */ + {{0.0f, 0.0f, 1.0f, 0.0f}, + {0.0f, -1.0f, 0.0f, 0.0f}, + {1.0f, 0.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, 1.0f}}, + /* Pos Y */ + {{1.0f, 0.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, -1.0f, 0.0f}, + {0.0f, 1.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, 1.0f}}, + /* Neg Y */ + {{1.0f, 0.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 1.0f, 0.0f}, + {0.0f, -1.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, 1.0f}}, + /* Pos Z */ + {{1.0f, 0.0f, 0.0f, 0.0f}, + {0.0f, -1.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, -1.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, 1.0f}}, + /* Neg Z */ + {{-1.0f, 0.0f, 0.0f, 0.0f}, + {0.0f, -1.0f, 0.0f, 0.0f}, + {0.0f, 0.0f, 1.0f, 0.0f}, + {0.0f, 0.0f, 0.0f, 1.0f}}, +}; + +#endif /* __EEVEE_PRIVATE_H__ */ diff --git a/source/blender/draw/engines/eevee/eevee_render.c b/source/blender/draw/engines/eevee/eevee_render.c new file mode 100644 index 00000000000..8d196ee07eb --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_render.c @@ -0,0 +1,621 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_render.c + * \ingroup draw_engine + */ + +/** + * Render functions for final render outputs. + */ + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "DNA_node_types.h" +#include "DNA_object_types.h" + +#include "BKE_camera.h" + +#include "BLI_rand.h" +#include "BLI_rect.h" + +#include "DEG_depsgraph_query.h" + +#include "GPU_framebuffer.h" +#include "GPU_glew.h" +#include "GPU_state.h" + +#include "RE_pipeline.h" + +#include "eevee_private.h" + +void EEVEE_render_init(EEVEE_Data *ved, RenderEngine *engine, struct Depsgraph *depsgraph) +{ + EEVEE_Data *vedata = (EEVEE_Data *)ved; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + Scene *scene = DEG_get_evaluated_scene(depsgraph); + const float *size_orig = DRW_viewport_size_get(); + + /* Init default FB and render targets: + * In render mode the default framebuffer is not generated + * because there is no viewport. So we need to manually create it or + * not use it. For code clarity we just allocate it make use of it. */ + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + /* Alloc transient data. */ + if (!stl->g_data) { + stl->g_data = MEM_callocN(sizeof(*stl->g_data), __func__); + } + EEVEE_PrivateData *g_data = stl->g_data; + g_data->background_alpha = DRW_state_draw_background() ? 1.0f : 0.0f; + g_data->valid_double_buffer = 0; + copy_v2_v2(g_data->size_orig, size_orig); + + if (scene->eevee.flag & SCE_EEVEE_OVERSCAN) { + g_data->overscan = scene->eevee.overscan / 100.0f; + g_data->overscan_pixels = roundf(max_ff(size_orig[0], size_orig[1]) * g_data->overscan); + } + else { + g_data->overscan = 0.0f; + g_data->overscan_pixels = 0.0f; + } + + /* XXX overiding viewport size. Simplify things but is not really 100% safe. */ + DRW_render_viewport_size_set((int[2]){size_orig[0] + g_data->overscan_pixels * 2.0f, + size_orig[1] + g_data->overscan_pixels * 2.0f}); + + /* TODO 32 bit depth */ + DRW_texture_ensure_fullscreen_2D(&dtxl->depth, GPU_DEPTH24_STENCIL8, 0); + DRW_texture_ensure_fullscreen_2D(&txl->color, GPU_RGBA32F, DRW_TEX_FILTER | DRW_TEX_MIPMAP); + + GPU_framebuffer_ensure_config(&dfbl->default_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(txl->color) + }); + GPU_framebuffer_ensure_config(&fbl->main_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(txl->color) + }); + GPU_framebuffer_ensure_config(&fbl->main_color_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->color) + }); + + /* Alloc common ubo data. */ + if (sldata->common_ubo == NULL) { + sldata->common_ubo = DRW_uniformbuffer_create(sizeof(sldata->common_data), &sldata->common_data); + } + if (sldata->clip_ubo == NULL) { + sldata->clip_ubo = DRW_uniformbuffer_create(sizeof(sldata->clip_data), &sldata->clip_data); + } + + /* Set the pers & view matrix. */ + /* TODO(sergey): Shall render hold pointer to an evaluated camera instead? */ + struct Object *ob_camera_eval = DEG_get_evaluated_object(depsgraph, RE_GetCamera(engine->re)); + float frame = BKE_scene_frame_get(scene); + RE_GetCameraWindow(engine->re, ob_camera_eval, frame, g_data->winmat); + RE_GetCameraModelMatrix(engine->re, ob_camera_eval, g_data->viewinv); + + RE_GetCameraWindowWithOverscan(engine->re, g_data->winmat, g_data->overscan); + + invert_m4_m4(g_data->viewmat, g_data->viewinv); + mul_m4_m4m4(g_data->persmat, g_data->winmat, g_data->viewmat); + invert_m4_m4(g_data->persinv, g_data->persmat); + invert_m4_m4(g_data->wininv, g_data->winmat); + + DRW_viewport_matrix_override_set(g_data->persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(g_data->persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(g_data->winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(g_data->wininv, DRW_MAT_WININV); + DRW_viewport_matrix_override_set(g_data->viewmat, DRW_MAT_VIEW); + DRW_viewport_matrix_override_set(g_data->viewinv, DRW_MAT_VIEWINV); + + /* EEVEE_effects_init needs to go first for TAA */ + EEVEE_effects_init(sldata, vedata, ob_camera_eval, false); + EEVEE_materials_init(sldata, stl, fbl); + EEVEE_lights_init(sldata); + EEVEE_lightprobes_init(sldata, vedata); + + /* INIT CACHE */ + EEVEE_bloom_cache_init(sldata, vedata); + EEVEE_depth_of_field_cache_init(sldata, vedata); + EEVEE_effects_cache_init(sldata, vedata); + EEVEE_lightprobes_cache_init(sldata, vedata); + EEVEE_lights_cache_init(sldata, vedata); + EEVEE_materials_cache_init(sldata, vedata); + EEVEE_motion_blur_cache_init(sldata, vedata); + EEVEE_occlusion_cache_init(sldata, vedata); + EEVEE_screen_raytrace_cache_init(sldata, vedata); + EEVEE_subsurface_cache_init(sldata, vedata); + EEVEE_temporal_sampling_cache_init(sldata, vedata); + EEVEE_volumes_cache_init(sldata, vedata); +} + +/* Used by light cache. in this case engine is NULL. */ +void EEVEE_render_cache( + void *vedata, struct Object *ob, + struct RenderEngine *engine, struct Depsgraph *UNUSED(depsgraph)) +{ + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + EEVEE_LightProbesInfo *pinfo = sldata->probes; + bool cast_shadow = false; + + if (pinfo->vis_data.collection) { + /* Used for rendering probe with visibility groups. */ + bool ob_vis = BKE_collection_has_object_recursive(pinfo->vis_data.collection, ob); + ob_vis = (pinfo->vis_data.invert) ? !ob_vis : ob_vis; + + if (!ob_vis) { + return; + } + } + + if (engine) { + char info[42]; + BLI_snprintf(info, sizeof(info), "Syncing %s", ob->id.name + 2); + RE_engine_update_stats(engine, NULL, info); + } + + if (ob->base_flag & BASE_VISIBLE) { + EEVEE_hair_cache_populate(vedata, sldata, ob, &cast_shadow); + } + + if (DRW_object_is_visible_in_active_context(ob)) { + if (ELEM(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { + EEVEE_materials_cache_populate(vedata, sldata, ob, &cast_shadow); + } + else if (ob->type == OB_LIGHTPROBE) { + EEVEE_lightprobes_cache_add(sldata, vedata, ob); + } + else if (ob->type == OB_LAMP) { + EEVEE_lights_cache_add(sldata, ob); + } + } + + if (cast_shadow) { + EEVEE_lights_cache_shcaster_object_add(sldata, ob); + } +} + +static void eevee_render_result_combined( + RenderLayer *rl, const char *viewname, const rcti *rect, + EEVEE_Data *vedata, EEVEE_ViewLayerData *UNUSED(sldata)) +{ + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_COMBINED, viewname); + + GPU_framebuffer_bind(vedata->stl->effects->final_fb); + GPU_framebuffer_read_color(vedata->stl->effects->final_fb, + vedata->stl->g_data->overscan_pixels + rect->xmin, + vedata->stl->g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 4, 0, rp->rect); + + /* Premult alpha */ + int pixels_len = BLI_rcti_size_x(rect) * BLI_rcti_size_y(rect); + for (int i = 0; i < pixels_len * 4; i += 4) { + mul_v3_fl(rp->rect + i, rp->rect[i + 3]); + } +} + +static void eevee_render_result_subsurface( + RenderLayer *rl, const char *viewname, const rcti *rect, + EEVEE_Data *vedata, EEVEE_ViewLayerData *UNUSED(sldata), int render_samples) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + + if (vedata->fbl->sss_accum_fb == NULL) { + /* SSS is not enabled. */ + return; + } + + if ((view_layer->passflag & SCE_PASS_SUBSURFACE_COLOR) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_SUBSURFACE_COLOR, viewname); + + GPU_framebuffer_bind(vedata->fbl->sss_accum_fb); + GPU_framebuffer_read_color(vedata->fbl->sss_accum_fb, + vedata->stl->g_data->overscan_pixels + rect->xmin, + vedata->stl->g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 3, 1, rp->rect); + + /* This is the accumulated color. Divide by the number of samples. */ + for (int i = 0; i < rp->rectx * rp->recty * 3; i++) { + rp->rect[i] /= (float)render_samples; + } + } + + if ((view_layer->passflag & SCE_PASS_SUBSURFACE_DIRECT) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_SUBSURFACE_DIRECT, viewname); + + GPU_framebuffer_bind(vedata->fbl->sss_accum_fb); + GPU_framebuffer_read_color(vedata->fbl->sss_accum_fb, + vedata->stl->g_data->overscan_pixels + rect->xmin, + vedata->stl->g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 3, 0, rp->rect); + + /* This is the accumulated color. Divide by the number of samples. */ + for (int i = 0; i < rp->rectx * rp->recty * 3; i++) { + rp->rect[i] /= (float)render_samples; + } + } + + if ((view_layer->passflag & SCE_PASS_SUBSURFACE_INDIRECT) != 0) { + /* Do nothing as all the lighting is in the direct pass. + * TODO : Separate Direct from indirect lighting. */ + } +} + +static void eevee_render_result_normal( + RenderLayer *rl, const char *viewname, const rcti *rect, + EEVEE_Data *vedata, EEVEE_ViewLayerData *UNUSED(sldata)) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_PrivateData *g_data = stl->g_data; + + /* Only read the center texel. */ + if (stl->effects->taa_current_sample > 1) + return; + + if ((view_layer->passflag & SCE_PASS_NORMAL) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_NORMAL, viewname); + + GPU_framebuffer_bind(vedata->fbl->main_fb); + GPU_framebuffer_read_color(vedata->fbl->main_fb, + g_data->overscan_pixels + rect->xmin, + g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 3, 1, rp->rect); + + /* Convert Eevee encoded normals to Blender normals. */ + for (int i = 0; i < rp->rectx * rp->recty * 3; i += 3) { + if (rp->rect[i] == 0.0f && rp->rect[i + 1] == 0.0f) { + /* If normal is not correct then do not produce NANs. */ + continue; + } + + float fenc[2]; + fenc[0] = rp->rect[i + 0] * 4.0f - 2.0f; + fenc[1] = rp->rect[i + 1] * 4.0f - 2.0f; + + float f = dot_v2v2(fenc, fenc); + float g = sqrtf(1.0f - f / 4.0f); + + rp->rect[i + 0] = fenc[0] * g; + rp->rect[i + 1] = fenc[1] * g; + rp->rect[i + 2] = 1.0f - f / 2.0f; + + mul_mat3_m4_v3(g_data->viewinv, &rp->rect[i]); + } + } +} + +static void eevee_render_result_z( + RenderLayer *rl, const char *viewname, const rcti *rect, + EEVEE_Data *vedata, EEVEE_ViewLayerData *sldata) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_PrivateData *g_data = stl->g_data; + + /* Only read the center texel. */ + if (stl->effects->taa_current_sample > 1) + return; + + if ((view_layer->passflag & SCE_PASS_Z) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_Z, viewname); + + GPU_framebuffer_bind(vedata->fbl->main_fb); + GPU_framebuffer_read_depth(vedata->fbl->main_fb, + g_data->overscan_pixels + rect->xmin, + g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + rp->rect); + + bool is_persp = DRW_viewport_is_persp_get(); + + /* Convert ogl depth [0..1] to view Z [near..far] */ + for (int i = 0; i < rp->rectx * rp->recty; ++i) { + if (rp->rect[i] == 1.0f ) { + rp->rect[i] = 1e10f; /* Background */ + } + else { + if (is_persp) { + rp->rect[i] = rp->rect[i] * 2.0f - 1.0f; + rp->rect[i] = g_data->winmat[3][2] / (rp->rect[i] + g_data->winmat[2][2]); + } + else { + rp->rect[i] = -common_data->view_vecs[0][2] + rp->rect[i] * -common_data->view_vecs[1][2]; + } + } + } + } +} + +static void eevee_render_result_mist( + RenderLayer *rl, const char *viewname, const rcti *rect, + EEVEE_Data *vedata, EEVEE_ViewLayerData *UNUSED(sldata), int render_samples) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + + if ((view_layer->passflag & SCE_PASS_MIST) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_MIST, viewname); + + GPU_framebuffer_bind(vedata->fbl->mist_accum_fb); + GPU_framebuffer_read_color(vedata->fbl->mist_accum_fb, + vedata->stl->g_data->overscan_pixels + rect->xmin, + vedata->stl->g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 1, 0, rp->rect); + + /* This is the accumulated color. Divide by the number of samples. */ + for (int i = 0; i < rp->rectx * rp->recty; i++) { + rp->rect[i] /= (float)render_samples; + } + } +} + +static void eevee_render_result_occlusion( + RenderLayer *rl, const char *viewname, const rcti *rect, + EEVEE_Data *vedata, EEVEE_ViewLayerData *UNUSED(sldata), int render_samples) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + + if (vedata->fbl->ao_accum_fb == NULL) { + /* AO is not enabled. */ + return; + } + + if ((view_layer->passflag & SCE_PASS_AO) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_AO, viewname); + + GPU_framebuffer_bind(vedata->fbl->ao_accum_fb); + GPU_framebuffer_read_color(vedata->fbl->ao_accum_fb, + vedata->stl->g_data->overscan_pixels + rect->xmin, + vedata->stl->g_data->overscan_pixels + rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 3, 0, rp->rect); + + /* This is the accumulated color. Divide by the number of samples. */ + for (int i = 0; i < rp->rectx * rp->recty * 3; i += 3) { + rp->rect[i] = rp->rect[i + 1] = rp->rect[i + 2] = min_ff(1.0f, rp->rect[i] / (float)render_samples); + } + } +} + +static void eevee_render_draw_background(EEVEE_Data *vedata) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_PassList *psl = vedata->psl; + + /* Prevent background to write to data buffers. + * NOTE : This also make sure the textures are bound + * to the right double buffer. */ + GPU_framebuffer_ensure_config(&fbl->main_fb, { + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE + }); + GPU_framebuffer_bind(fbl->main_fb); + + DRW_draw_pass(psl->background_pass); + + GPU_framebuffer_ensure_config(&fbl->main_fb, { + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_TEXTURE(stl->effects->ssr_normal_input), + GPU_ATTACHMENT_TEXTURE(stl->effects->ssr_specrough_input), + GPU_ATTACHMENT_TEXTURE(stl->effects->sss_data), + GPU_ATTACHMENT_TEXTURE(stl->effects->sss_albedo) + }); + GPU_framebuffer_bind(fbl->main_fb); +} + +void EEVEE_render_draw(EEVEE_Data *vedata, RenderEngine *engine, RenderLayer *rl, const rcti *rect) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + ViewLayer *view_layer = draw_ctx->view_layer; + const char *viewname = RE_GetActiveRenderView(engine->re); + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + EEVEE_ViewLayerData *sldata = EEVEE_view_layer_data_ensure(); + EEVEE_PrivateData *g_data = stl->g_data; + + /* FINISH CACHE */ + EEVEE_materials_cache_finish(vedata); + EEVEE_lights_cache_finish(sldata, vedata); + EEVEE_lightprobes_cache_finish(sldata, vedata); + + /* Sort transparents before the loop. */ + DRW_pass_sort_shgroup_z(psl->transparent_pass); + + /* Push instances attribs to the GPU. */ + DRW_render_instance_buffer_finish(); + + /* Need to be called after DRW_render_instance_buffer_finish() */ + /* Also we weed to have a correct fbo bound for DRW_hair_update */ + GPU_framebuffer_bind(fbl->main_fb); + DRW_hair_update(); + + if ((view_layer->passflag & (SCE_PASS_SUBSURFACE_COLOR | + SCE_PASS_SUBSURFACE_DIRECT | + SCE_PASS_SUBSURFACE_INDIRECT)) != 0) + { + EEVEE_subsurface_output_init(sldata, vedata); + } + + if ((view_layer->passflag & SCE_PASS_MIST) != 0) { + EEVEE_mist_output_init(sldata, vedata); + } + + if ((view_layer->passflag & SCE_PASS_AO) != 0) { + EEVEE_occlusion_output_init(sldata, vedata); + } + + uint tot_sample = scene_eval->eevee.taa_render_samples; + uint render_samples = 0; + + if (RE_engine_test_break(engine)) { + return; + } + + while (render_samples < tot_sample && !RE_engine_test_break(engine)) { + float clear_col[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + float clear_depth = 1.0f; + uint clear_stencil = 0x00; + uint primes[3] = {2, 3, 7}; + double offset[3] = {0.0, 0.0, 0.0}; + double r[3]; + + /* Restore winmat before jittering again. */ + copy_m4_m4(stl->effects->overide_winmat, g_data->winmat); + /* Copy previous persmat to UBO data */ + copy_m4_m4(sldata->common_data.prev_persmat, stl->effects->prev_persmat); + + BLI_halton_3D(primes, offset, stl->effects->taa_current_sample, r); + EEVEE_update_noise(psl, fbl, r); + EEVEE_temporal_sampling_matrices_calc(stl->effects, g_data->viewmat, g_data->persmat, r); + EEVEE_volumes_set_jitter(sldata, stl->effects->taa_current_sample - 1); + EEVEE_materials_init(sldata, stl, fbl); + + /* Set matrices. */ + DRW_viewport_matrix_override_set(stl->effects->overide_persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(stl->effects->overide_persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(stl->effects->overide_winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(stl->effects->overide_wininv, DRW_MAT_WININV); + DRW_viewport_matrix_override_set(g_data->viewmat, DRW_MAT_VIEW); + DRW_viewport_matrix_override_set(g_data->viewinv, DRW_MAT_VIEWINV); + + /* Refresh Probes */ + RE_engine_update_stats(engine, NULL, "Updating Probes"); + EEVEE_lightprobes_refresh(sldata, vedata); + EEVEE_lightprobes_refresh_planar(sldata, vedata); + + char info[42]; + BLI_snprintf(info, sizeof(info), "Rendering %u / %u samples", render_samples + 1, tot_sample); + RE_engine_update_stats(engine, NULL, info); + + /* Refresh Shadows */ + EEVEE_lights_update(sldata, vedata); + EEVEE_draw_shadows(sldata, vedata); + + /* Set ray type. */ + sldata->common_data.ray_type = EEVEE_RAY_CAMERA; + sldata->common_data.ray_depth = 0.0f; + DRW_uniformbuffer_update(sldata->common_ubo, &sldata->common_data); + + GPU_framebuffer_bind(fbl->main_fb); + GPU_framebuffer_clear_color_depth_stencil(fbl->main_fb, clear_col, clear_depth, clear_stencil); + /* Depth prepass */ + DRW_draw_pass(psl->depth_pass); + DRW_draw_pass(psl->depth_pass_cull); + /* Create minmax texture */ + EEVEE_create_minmax_buffer(vedata, dtxl->depth, -1); + EEVEE_occlusion_compute(sldata, vedata, dtxl->depth, -1); + EEVEE_volumes_compute(sldata, vedata); + /* Shading pass */ + eevee_render_draw_background(vedata); + GPU_framebuffer_bind(fbl->main_fb); + EEVEE_draw_default_passes(psl); + DRW_draw_pass(psl->material_pass); + EEVEE_subsurface_data_render(sldata, vedata); + /* Effects pre-transparency */ + EEVEE_subsurface_compute(sldata, vedata); + EEVEE_reflection_compute(sldata, vedata); + EEVEE_refraction_compute(sldata, vedata); + /* Opaque refraction */ + DRW_draw_pass(psl->refract_depth_pass); + DRW_draw_pass(psl->refract_depth_pass_cull); + DRW_draw_pass(psl->refract_pass); + /* Subsurface output */ + EEVEE_subsurface_output_accumulate(sldata, vedata); + /* Occlusion output */ + EEVEE_occlusion_output_accumulate(sldata, vedata); + /* Result NORMAL */ + eevee_render_result_normal(rl, viewname, rect, vedata, sldata); + /* Volumetrics Resolve Opaque */ + EEVEE_volumes_resolve(sldata, vedata); + /* Mist output */ + EEVEE_mist_output_accumulate(sldata, vedata); + /* Transparent */ + DRW_draw_pass(psl->transparent_pass); + /* Result Z */ + eevee_render_result_z(rl, viewname, rect, vedata, sldata); + /* Post Process */ + EEVEE_draw_effects(sldata, vedata); + + /* XXX Seems to fix TDR issue with NVidia drivers on linux. */ + GPU_finish(); + + RE_engine_update_progress(engine, (float)(render_samples++) / (float)tot_sample); + } + + eevee_render_result_combined(rl, viewname, rect, vedata, sldata); + eevee_render_result_subsurface(rl, viewname, rect, vedata, sldata, render_samples); + eevee_render_result_mist(rl, viewname, rect, vedata, sldata, render_samples); + eevee_render_result_occlusion(rl, viewname, rect, vedata, sldata, render_samples); + + /* Restore original viewport size. */ + DRW_render_viewport_size_set((int[2]){g_data->size_orig[0], g_data->size_orig[1]}); +} + +void EEVEE_render_update_passes(RenderEngine *engine, Scene *scene, ViewLayer *view_layer) +{ + int type; + + RE_engine_register_pass(engine, scene, view_layer, RE_PASSNAME_COMBINED, 4, "RGBA", SOCK_RGBA); + +#define CHECK_PASS(name, channels, chanid) \ + if (view_layer->passflag & (SCE_PASS_ ## name)) { \ + if (channels == 4) type = SOCK_RGBA; \ + else if (channels == 3) type = SOCK_VECTOR; \ + else type = SOCK_FLOAT; \ + RE_engine_register_pass(engine, scene, view_layer, RE_PASSNAME_ ## name, channels, chanid, type); \ + } + + CHECK_PASS(Z, 1, "Z"); + CHECK_PASS(MIST, 1, "Z"); + CHECK_PASS(NORMAL, 3, "XYZ"); + CHECK_PASS(AO, 3, "RGB"); + CHECK_PASS(SUBSURFACE_COLOR, 3, "RGB"); + CHECK_PASS(SUBSURFACE_DIRECT, 3, "RGB"); + +#undef CHECK_PASS +} diff --git a/source/blender/draw/engines/eevee/eevee_screen_raytrace.c b/source/blender/draw/engines/eevee/eevee_screen_raytrace.c new file mode 100644 index 00000000000..13bedc34e05 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_screen_raytrace.c @@ -0,0 +1,337 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_screen_raytrace.c + * \ingroup draw_engine + * + * Screen space reflections and refractions techniques. + */ + +#include "DRW_render.h" + +#include "BLI_dynstr.h" +#include "BLI_string_utils.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" +#include "GPU_texture.h" + +/* SSR shader variations */ +enum { + SSR_RESOLVE = (1 << 0), + SSR_FULL_TRACE = (1 << 1), + SSR_AO = (1 << 3), + SSR_MAX_SHADER = (1 << 4), +}; + +static struct { + /* Screen Space Reflection */ + struct GPUShader *ssr_sh[SSR_MAX_SHADER]; + + /* Theses are just references, not actually allocated */ + struct GPUTexture *depth_src; + struct GPUTexture *color_src; +} e_data = {{NULL}}; /* Engine data */ + +extern char datatoc_ambient_occlusion_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_bsdf_sampling_lib_glsl[]; +extern char datatoc_octahedron_lib_glsl[]; +extern char datatoc_effect_ssr_frag_glsl[]; +extern char datatoc_lightprobe_lib_glsl[]; +extern char datatoc_raytrace_lib_glsl[]; + +static struct GPUShader *eevee_effects_screen_raytrace_shader_get(int options) +{ + if (e_data.ssr_sh[options] == NULL) { + char *ssr_shader_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl, + datatoc_ambient_occlusion_lib_glsl, + datatoc_octahedron_lib_glsl, + datatoc_lightprobe_lib_glsl, + datatoc_raytrace_lib_glsl, + datatoc_effect_ssr_frag_glsl); + + DynStr *ds_defines = BLI_dynstr_new(); + BLI_dynstr_appendf(ds_defines, SHADER_DEFINES); + if (options & SSR_RESOLVE) { + BLI_dynstr_appendf(ds_defines, "#define STEP_RESOLVE\n"); + } + else { + BLI_dynstr_appendf(ds_defines, "#define STEP_RAYTRACE\n"); + BLI_dynstr_appendf(ds_defines, "#define PLANAR_PROBE_RAYTRACE\n"); + } + if (options & SSR_FULL_TRACE) { + BLI_dynstr_appendf(ds_defines, "#define FULLRES\n"); + } + if (options & SSR_AO) { + BLI_dynstr_appendf(ds_defines, "#define SSR_AO\n"); + } + char *ssr_define_str = BLI_dynstr_get_cstring(ds_defines); + BLI_dynstr_free(ds_defines); + + e_data.ssr_sh[options] = DRW_shader_create_fullscreen(ssr_shader_str, ssr_define_str); + + MEM_freeN(ssr_shader_str); + MEM_freeN(ssr_define_str); + } + + return e_data.ssr_sh[options]; +} + +int EEVEE_screen_raytrace_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + const float *viewport_size = DRW_viewport_size_get(); + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + /* Compute pixel size, (shared with contact shadows) */ + copy_v2_v2(common_data->ssr_pixelsize, viewport_size); + invert_v2(common_data->ssr_pixelsize); + + if (scene_eval->eevee.flag & SCE_EEVEE_SSR_ENABLED) { + const bool use_refraction = (scene_eval->eevee.flag & SCE_EEVEE_SSR_REFRACTION) != 0; + + if (use_refraction) { + /* TODO: Opti: Could be shared. */ + DRW_texture_ensure_fullscreen_2D(&txl->refract_color, GPU_R11F_G11F_B10F, DRW_TEX_FILTER | DRW_TEX_MIPMAP); + + GPU_framebuffer_ensure_config(&fbl->refract_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->refract_color) + }); + } + + const bool is_persp = DRW_viewport_is_persp_get(); + if (effects->ssr_was_persp != is_persp) { + effects->ssr_was_persp = is_persp; + DRW_viewport_request_redraw(); + EEVEE_temporal_sampling_reset(vedata); + stl->g_data->valid_double_buffer = false; + } + + effects->reflection_trace_full = (scene_eval->eevee.flag & SCE_EEVEE_SSR_HALF_RESOLUTION) == 0; + common_data->ssr_thickness = scene_eval->eevee.ssr_thickness; + common_data->ssr_border_fac = scene_eval->eevee.ssr_border_fade; + common_data->ssr_firefly_fac = scene_eval->eevee.ssr_firefly_fac; + common_data->ssr_max_roughness = scene_eval->eevee.ssr_max_roughness; + common_data->ssr_quality = 1.0f - 0.95f * scene_eval->eevee.ssr_quality; + common_data->ssr_brdf_bias = 0.1f + common_data->ssr_quality * 0.6f; /* Range [0.1, 0.7]. */ + + if (common_data->ssr_firefly_fac < 1e-8f) { + common_data->ssr_firefly_fac = FLT_MAX; + } + + const int divisor = (effects->reflection_trace_full) ? 1 : 2; + int tracing_res[2] = {(int)viewport_size[0] / divisor, (int)viewport_size[1] / divisor}; + int size_fs[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + const bool high_qual_input = true; /* TODO dither low quality input */ + const GPUTextureFormat format = (high_qual_input) ? GPU_RGBA16F : GPU_RGBA8; + + /* MRT for the shading pass in order to output needed data for the SSR pass. */ + effects->ssr_specrough_input = DRW_texture_pool_query_2D(size_fs[0], size_fs[1], format, + &draw_engine_eevee_type); + + GPU_framebuffer_texture_attach(fbl->main_fb, effects->ssr_specrough_input, 2, 0); + + /* Raytracing output */ + effects->ssr_hit_output = DRW_texture_pool_query_2D(tracing_res[0], tracing_res[1], GPU_RG16I, + &draw_engine_eevee_type); + effects->ssr_pdf_output = DRW_texture_pool_query_2D(tracing_res[0], tracing_res[1], GPU_R16F, + &draw_engine_eevee_type); + + GPU_framebuffer_ensure_config(&fbl->screen_tracing_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->ssr_hit_output), + GPU_ATTACHMENT_TEXTURE(effects->ssr_pdf_output) + }); + + /* Enable double buffering to be able to read previous frame color */ + return EFFECT_SSR | EFFECT_NORMAL_BUFFER | EFFECT_DOUBLE_BUFFER | ((use_refraction) ? EFFECT_REFRACT : 0); + } + + /* Cleanup to release memory */ + GPU_FRAMEBUFFER_FREE_SAFE(fbl->screen_tracing_fb); + effects->ssr_specrough_input = NULL; + effects->ssr_hit_output = NULL; + effects->ssr_pdf_output = NULL; + + return 0; +} + +void EEVEE_screen_raytrace_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + LightCache *lcache = stl->g_data->light_cache; + + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + + if ((effects->enabled_effects & EFFECT_SSR) != 0) { + int options = (effects->reflection_trace_full) ? SSR_FULL_TRACE : 0; + options |= ((effects->enabled_effects & EFFECT_GTAO) != 0) ? SSR_AO : 0; + + struct GPUShader *trace_shader = eevee_effects_screen_raytrace_shader_get(options); + struct GPUShader *resolve_shader = eevee_effects_screen_raytrace_shader_get(SSR_RESOLVE | options); + + /** Screen space raytracing overview + * + * Following Frostbite stochastic SSR. + * + * - First pass Trace rays across the depth buffer. The hit position and pdf are + * recorded in a RGBA16F render target for each ray (sample). + * + * - We downsample the previous frame color buffer. + * + * - For each final pixel, we gather neighbors rays and choose a color buffer + * mipmap for each ray using its pdf. (filtered importance sampling) + * We then evaluate the lighting from the probes and mix the results together. + */ + psl->ssr_raytrace = DRW_pass_create("SSR Raytrace", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(trace_shader, psl->ssr_raytrace); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &effects->ssr_normal_input); + DRW_shgroup_uniform_texture_ref(grp, "specroughBuffer", &effects->ssr_specrough_input); + DRW_shgroup_uniform_texture_ref(grp, "maxzBuffer", &txl->maxzbuffer); + DRW_shgroup_uniform_texture_ref(grp, "planarDepth", &vedata->txl->planar_depth); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + if (!effects->reflection_trace_full) { + DRW_shgroup_uniform_ivec2(grp, "halfresOffset", effects->ssr_halfres_ofs, 1); + } + DRW_shgroup_call_add(grp, quad, NULL); + + psl->ssr_resolve = DRW_pass_create("SSR Resolve", DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE); + grp = DRW_shgroup_create(resolve_shader, psl->ssr_resolve); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.depth_src); + DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &effects->ssr_normal_input); + DRW_shgroup_uniform_texture_ref(grp, "specroughBuffer", &effects->ssr_specrough_input); + DRW_shgroup_uniform_texture_ref(grp, "probeCubes", &lcache->cube_tx.tex); + DRW_shgroup_uniform_texture_ref(grp, "probePlanars", &vedata->txl->planar_pool); + DRW_shgroup_uniform_texture_ref(grp, "planarDepth", &vedata->txl->planar_depth); + DRW_shgroup_uniform_texture_ref(grp, "hitBuffer", &effects->ssr_hit_output); + DRW_shgroup_uniform_texture_ref(grp, "pdfBuffer", &effects->ssr_pdf_output); + DRW_shgroup_uniform_texture_ref(grp, "prevColorBuffer", &txl->color_double_buffer); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_int(grp, "neighborOffset", &effects->ssr_neighbor_ofs, 1); + if ((effects->enabled_effects & EFFECT_GTAO) != 0) { + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "horizonBuffer", &effects->gtao_horizons); + } + + DRW_shgroup_call_add(grp, quad, NULL); + } +} + +void EEVEE_refraction_compute(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_REFRACT) != 0) { + GPU_framebuffer_blit(fbl->main_fb, 0, fbl->refract_fb, 0, GPU_COLOR_BIT); + EEVEE_downsample_buffer(vedata, txl->refract_color, 9); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + } +} + +void EEVEE_reflection_compute(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + + if (((effects->enabled_effects & EFFECT_SSR) != 0) && stl->g_data->valid_double_buffer) { + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + e_data.depth_src = dtxl->depth; + + DRW_stats_group_start("SSR"); + + /* Raytrace. */ + GPU_framebuffer_bind(fbl->screen_tracing_fb); + DRW_draw_pass(psl->ssr_raytrace); + + EEVEE_downsample_buffer(vedata, txl->color_double_buffer, 9); + + /* Resolve at fullres */ + int sample = (DRW_state_is_image_render()) ? effects->taa_render_sample : effects->taa_current_sample; + /* Doing a neighbor shift only after a few iteration. We wait for a prime number of cycles to avoid + * noise correlation. This reduces variance faster. */ + effects->ssr_neighbor_ofs = ((sample / 5) % 8) * 4; + switch ((sample / 11) % 4) { + case 0: + effects->ssr_halfres_ofs[0] = 0; + effects->ssr_halfres_ofs[1] = 0; + break; + case 1: + effects->ssr_halfres_ofs[0] = 0; + effects->ssr_halfres_ofs[1] = 1; + break; + case 2: + effects->ssr_halfres_ofs[0] = 1; + effects->ssr_halfres_ofs[1] = 0; + break; + case 4: + effects->ssr_halfres_ofs[0] = 1; + effects->ssr_halfres_ofs[1] = 1; + break; + } + GPU_framebuffer_bind(fbl->main_color_fb); + DRW_draw_pass(psl->ssr_resolve); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + DRW_stats_group_end(); + } +} + +void EEVEE_screen_raytrace_free(void) +{ + for (int i = 0; i < SSR_MAX_SHADER; ++i) { + DRW_SHADER_FREE_SAFE(e_data.ssr_sh[i]); + } +} diff --git a/source/blender/draw/engines/eevee/eevee_shaders.c b/source/blender/draw/engines/eevee/eevee_shaders.c new file mode 100644 index 00000000000..6fbd0ae5173 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_shaders.c @@ -0,0 +1,320 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_shaders.c + * \ingroup draw_engine + */ + +#include "DRW_render.h" + +#include "BLI_string_utils.h" + +#include "MEM_guardedalloc.h" + +#include "GPU_shader.h" + +#include "eevee_private.h" + +const char *filter_defines = "#define HAMMERSLEY_SIZE " STRINGIFY(HAMMERSLEY_SIZE) "\n" +#if defined(IRRADIANCE_SH_L2) + "#define IRRADIANCE_SH_L2\n" +#elif defined(IRRADIANCE_CUBEMAP) + "#define IRRADIANCE_CUBEMAP\n" +#elif defined(IRRADIANCE_HL2) + "#define IRRADIANCE_HL2\n" +#endif + "#define NOISE_SIZE 64\n"; + +static struct { + /* Probes */ + struct GPUShader *probe_default_sh; + struct GPUShader *probe_default_studiolight_sh; + struct GPUShader *probe_grid_display_sh; + struct GPUShader *probe_cube_display_sh; + struct GPUShader *probe_planar_display_sh; + struct GPUShader *probe_filter_glossy_sh; + struct GPUShader *probe_filter_diffuse_sh; + struct GPUShader *probe_filter_visibility_sh; + struct GPUShader *probe_grid_fill_sh; + struct GPUShader *probe_planar_downsample_sh; + + /* Velocity Resolve */ + struct GPUShader *velocity_resolve_sh; + + /* Temporal Anti Aliasing */ + struct GPUShader *taa_resolve_sh; + struct GPUShader *taa_resolve_reproject_sh; + +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_bsdf_sampling_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; + +extern char datatoc_background_vert_glsl[]; +extern char datatoc_default_world_frag_glsl[]; +extern char datatoc_lightprobe_geom_glsl[]; +extern char datatoc_lightprobe_vert_glsl[]; +extern char datatoc_lightprobe_cube_display_frag_glsl[]; +extern char datatoc_lightprobe_cube_display_vert_glsl[]; +extern char datatoc_lightprobe_filter_diffuse_frag_glsl[]; +extern char datatoc_lightprobe_filter_glossy_frag_glsl[]; +extern char datatoc_lightprobe_filter_visibility_frag_glsl[]; +extern char datatoc_lightprobe_grid_display_frag_glsl[]; +extern char datatoc_lightprobe_grid_display_vert_glsl[]; +extern char datatoc_lightprobe_grid_fill_frag_glsl[]; +extern char datatoc_lightprobe_planar_display_frag_glsl[]; +extern char datatoc_lightprobe_planar_display_vert_glsl[]; +extern char datatoc_lightprobe_planar_downsample_frag_glsl[]; +extern char datatoc_lightprobe_planar_downsample_geom_glsl[]; +extern char datatoc_lightprobe_planar_downsample_vert_glsl[]; +extern char datatoc_irradiance_lib_glsl[]; +extern char datatoc_lightprobe_lib_glsl[]; +extern char datatoc_octahedron_lib_glsl[]; + +/* Velocity Resolve */ +extern char datatoc_effect_velocity_resolve_frag_glsl[]; + +/* Temporal Sampling */ +extern char datatoc_effect_temporal_aa_glsl[]; + +extern GlobalsUboStorage ts; + +/* *********** FUNCTIONS *********** */ + +void EEVEE_shaders_lightprobe_shaders_init(void) +{ + BLI_assert(e_data.probe_filter_glossy_sh == NULL); + char *shader_str = NULL; + + shader_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl, + datatoc_lightprobe_filter_glossy_frag_glsl); + + e_data.probe_filter_glossy_sh = DRW_shader_create( + datatoc_lightprobe_vert_glsl, datatoc_lightprobe_geom_glsl, shader_str, filter_defines); + + e_data.probe_default_sh = DRW_shader_create( + datatoc_background_vert_glsl, NULL, datatoc_default_world_frag_glsl, NULL); + + MEM_freeN(shader_str); + + shader_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl, + datatoc_lightprobe_filter_diffuse_frag_glsl); + + e_data.probe_filter_diffuse_sh = DRW_shader_create_fullscreen(shader_str, filter_defines); + + MEM_freeN(shader_str); + + shader_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_bsdf_sampling_lib_glsl, + datatoc_lightprobe_filter_visibility_frag_glsl); + + e_data.probe_filter_visibility_sh = DRW_shader_create_fullscreen(shader_str, filter_defines); + + MEM_freeN(shader_str); + + e_data.probe_grid_fill_sh = DRW_shader_create_fullscreen( + datatoc_lightprobe_grid_fill_frag_glsl, filter_defines); + + e_data.probe_planar_downsample_sh = DRW_shader_create( + datatoc_lightprobe_planar_downsample_vert_glsl, + datatoc_lightprobe_planar_downsample_geom_glsl, + datatoc_lightprobe_planar_downsample_frag_glsl, + NULL); +} + +GPUShader *EEVEE_shaders_probe_filter_glossy_sh_get(void) +{ + return e_data.probe_filter_glossy_sh; +} + +GPUShader *EEVEE_shaders_probe_default_sh_get(void) +{ + return e_data.probe_default_sh; +} + +GPUShader *EEVEE_shaders_probe_filter_diffuse_sh_get(void) +{ + return e_data.probe_filter_diffuse_sh; +} + +GPUShader *EEVEE_shaders_probe_filter_visibility_sh_get(void) +{ + return e_data.probe_filter_visibility_sh; +} + +GPUShader *EEVEE_shaders_probe_grid_fill_sh_get(void) +{ + return e_data.probe_grid_fill_sh; +} + +GPUShader *EEVEE_shaders_probe_planar_downsample_sh_get(void) +{ + return e_data.probe_planar_downsample_sh; +} + +GPUShader *EEVEE_shaders_default_studiolight_sh_get(void) +{ + if (e_data.probe_default_studiolight_sh == NULL) { + e_data.probe_default_studiolight_sh = DRW_shader_create( + datatoc_background_vert_glsl, NULL, datatoc_default_world_frag_glsl, "#define LOOKDEV\n"); + } + return e_data.probe_default_studiolight_sh; +} + +GPUShader *EEVEE_shaders_probe_cube_display_sh_get(void) +{ + if (e_data.probe_cube_display_sh == NULL) { + char *shader_str = BLI_string_joinN( + datatoc_octahedron_lib_glsl, + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_lightprobe_lib_glsl, + datatoc_lightprobe_cube_display_frag_glsl); + + char *vert_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_lightprobe_cube_display_vert_glsl); + + e_data.probe_cube_display_sh = DRW_shader_create(vert_str, NULL, shader_str, SHADER_DEFINES); + + MEM_freeN(vert_str); + MEM_freeN(shader_str); + } + return e_data.probe_cube_display_sh; +} + + GPUShader *EEVEE_shaders_probe_grid_display_sh_get(void) +{ + if (e_data.probe_grid_display_sh == NULL ) { + char *shader_str = BLI_string_joinN( + datatoc_octahedron_lib_glsl, + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_irradiance_lib_glsl, + datatoc_lightprobe_lib_glsl, + datatoc_lightprobe_grid_display_frag_glsl); + + char *vert_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_lightprobe_grid_display_vert_glsl); + + e_data.probe_grid_display_sh = DRW_shader_create(vert_str, NULL, shader_str, filter_defines); + + MEM_freeN(vert_str); + MEM_freeN(shader_str); + } + return e_data.probe_grid_display_sh; +} + + GPUShader *EEVEE_shaders_probe_planar_display_sh_get(void) +{ + if (e_data.probe_planar_display_sh == NULL) { + char *vert_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_lightprobe_planar_display_vert_glsl); + + char *shader_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_lightprobe_planar_display_frag_glsl); + + e_data.probe_planar_display_sh = DRW_shader_create(vert_str, NULL, shader_str, NULL); + + MEM_freeN(vert_str); + MEM_freeN(shader_str); + } + return e_data.probe_planar_display_sh; +} + +GPUShader *EEVEE_shaders_velocity_resolve_sh_get(void) +{ + if (e_data.velocity_resolve_sh == NULL) { + char *frag_str = BLI_string_joinN( + datatoc_common_uniforms_lib_glsl, + datatoc_common_view_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_effect_velocity_resolve_frag_glsl); + + e_data.velocity_resolve_sh = DRW_shader_create_fullscreen(frag_str, NULL); + + MEM_freeN(frag_str); + } + return e_data.velocity_resolve_sh; +} + +GPUShader *EEVEE_shaders_taa_resolve_sh_get(EEVEE_EffectsFlag enabled_effects) +{ + GPUShader **sh; + const char *define = NULL; + if (enabled_effects & EFFECT_TAA_REPROJECT) { + sh = &e_data.taa_resolve_reproject_sh; + define = "#define USE_REPROJECTION\n"; + + + + } + else { + sh = &e_data.taa_resolve_sh; + } + if (*sh == NULL) { + char *frag_str = BLI_string_joinN( + datatoc_common_uniforms_lib_glsl, + datatoc_common_view_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_effect_temporal_aa_glsl); + + *sh = DRW_shader_create_fullscreen(frag_str, define); + MEM_freeN(frag_str); + } + + return *sh; +} + +void EEVEE_shaders_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.probe_default_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_filter_glossy_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_filter_diffuse_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_filter_visibility_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_grid_fill_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_planar_downsample_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_default_studiolight_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_grid_display_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_cube_display_sh); + DRW_SHADER_FREE_SAFE(e_data.probe_planar_display_sh); + DRW_SHADER_FREE_SAFE(e_data.velocity_resolve_sh); + DRW_SHADER_FREE_SAFE(e_data.taa_resolve_sh); + DRW_SHADER_FREE_SAFE(e_data.taa_resolve_reproject_sh); +} diff --git a/source/blender/draw/engines/eevee/eevee_subsurface.c b/source/blender/draw/engines/eevee/eevee_subsurface.c new file mode 100644 index 00000000000..9ecc1fb1b2b --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_subsurface.c @@ -0,0 +1,372 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_subsurface.c + * \ingroup draw_engine + * + * Screen space subsurface scattering technique. + */ + +#include "DRW_render.h" + +#include "BLI_string_utils.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" +#include "GPU_texture.h" +#include "GPU_extensions.h" + +static struct { + struct GPUShader *sss_sh[4]; +} e_data = {{NULL}}; /* Engine data */ + +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_effect_subsurface_frag_glsl[]; + +static void eevee_create_shader_subsurface(void) +{ + char *frag_str = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_effect_subsurface_frag_glsl); + + e_data.sss_sh[0] = DRW_shader_create_fullscreen(frag_str, "#define FIRST_PASS\n"); + e_data.sss_sh[1] = DRW_shader_create_fullscreen(frag_str, "#define SECOND_PASS\n"); + e_data.sss_sh[2] = DRW_shader_create_fullscreen(frag_str, "#define SECOND_PASS\n" + "#define USE_SEP_ALBEDO\n"); + e_data.sss_sh[3] = DRW_shader_create_fullscreen(frag_str, "#define SECOND_PASS\n" + "#define USE_SEP_ALBEDO\n" + "#define RESULT_ACCUM\n"); + + MEM_freeN(frag_str); +} + +int EEVEE_subsurface_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + const float *viewport_size = DRW_viewport_size_get(); + const int fs_size[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (scene_eval->eevee.flag & SCE_EEVEE_SSS_ENABLED) { + effects->sss_sample_count = 1 + scene_eval->eevee.sss_samples * 2; + effects->sss_separate_albedo = (scene_eval->eevee.flag & SCE_EEVEE_SSS_SEPARATE_ALBEDO) != 0; + common_data->sss_jitter_threshold = scene_eval->eevee.sss_jitter_threshold; + + /* Force separate albedo for final render */ + if (DRW_state_is_image_render()) { + effects->sss_separate_albedo = true; + } + + /* Shaders */ + if (!e_data.sss_sh[0]) { + eevee_create_shader_subsurface(); + } + + /* NOTE : we need another stencil because the stencil buffer is on the same texture + * as the depth buffer we are sampling from. This could be avoided if the stencil is + * a separate texture but that needs OpenGL 4.4 or ARB_texture_stencil8. + * OR OpenGL 4.3 / ARB_ES3_compatibility if using a renderbuffer instead */ + effects->sss_stencil = DRW_texture_pool_query_2D(fs_size[0], fs_size[1], GPU_DEPTH24_STENCIL8, + &draw_engine_eevee_type); + effects->sss_blur = DRW_texture_pool_query_2D(fs_size[0], fs_size[1], GPU_RGBA16F, + &draw_engine_eevee_type); + effects->sss_data = DRW_texture_pool_query_2D(fs_size[0], fs_size[1], GPU_RGBA16F, + &draw_engine_eevee_type); + + GPUTexture *stencil_tex = effects->sss_stencil; + + if (GPU_depth_blitting_workaround()) { + /* Blitting stencil buffer does not work on macOS + Radeon Pro. + * Blit depth instead and use sss_stencil's depth as depth texture, + * and dtxl->depth as stencil mask. */ + GPU_framebuffer_ensure_config(&fbl->sss_blit_fb, { + GPU_ATTACHMENT_TEXTURE(effects->sss_stencil), + GPU_ATTACHMENT_NONE + }); + + stencil_tex = dtxl->depth; + } + + GPU_framebuffer_ensure_config(&fbl->sss_blur_fb, { + GPU_ATTACHMENT_TEXTURE(stencil_tex), + GPU_ATTACHMENT_TEXTURE(effects->sss_blur) + }); + + GPU_framebuffer_ensure_config(&fbl->sss_resolve_fb, { + GPU_ATTACHMENT_TEXTURE(stencil_tex), + GPU_ATTACHMENT_TEXTURE(txl->color) + }); + + GPU_framebuffer_ensure_config(&fbl->sss_clear_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(effects->sss_data) + }); + + if (effects->sss_separate_albedo) { + effects->sss_albedo = DRW_texture_pool_query_2D(fs_size[0], fs_size[1], GPU_R11F_G11F_B10F, + &draw_engine_eevee_type); + } + else { + effects->sss_albedo = NULL; + } + return EFFECT_SSS; + } + + /* Cleanup to release memory */ + GPU_FRAMEBUFFER_FREE_SAFE(fbl->sss_blur_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->sss_resolve_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->sss_clear_fb); + effects->sss_stencil = NULL; + effects->sss_blur = NULL; + effects->sss_data = NULL; + + return 0; +} + +static void set_shgrp_stencil(void *UNUSED(userData), DRWShadingGroup *shgrp) +{ + DRW_shgroup_stencil_mask(shgrp, 255); +} + +void EEVEE_subsurface_output_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (scene_eval->eevee.flag & SCE_EEVEE_SSS_ENABLED) { + DRW_texture_ensure_fullscreen_2D(&txl->sss_dir_accum, GPU_RGBA16F, 0); + DRW_texture_ensure_fullscreen_2D(&txl->sss_col_accum, GPU_RGBA16F, 0); + + GPUTexture *stencil_tex = effects->sss_stencil; + + if (GPU_depth_blitting_workaround()) { + /* Blitting stencil buffer does not work on macOS + Radeon Pro. + * Blit depth instead and use sss_stencil's depth as depth texture, + * and dtxl->depth as stencil mask. */ + stencil_tex = dtxl->depth; + } + + GPU_framebuffer_ensure_config(&fbl->sss_accum_fb, { + GPU_ATTACHMENT_TEXTURE(stencil_tex), + GPU_ATTACHMENT_TEXTURE(txl->sss_dir_accum), + GPU_ATTACHMENT_TEXTURE(txl->sss_col_accum) + }); + + /* Clear texture. */ + float clear[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + GPU_framebuffer_bind(fbl->sss_accum_fb); + GPU_framebuffer_clear_color(fbl->sss_accum_fb, clear); + + /* Make the opaque refraction pass mask the sss. */ + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_DEPTH_EQUAL | DRW_STATE_CLIP_PLANES | + DRW_STATE_WIRE | DRW_STATE_WRITE_STENCIL; + DRW_pass_state_set(vedata->psl->refract_pass, state); + DRW_pass_foreach_shgroup(vedata->psl->refract_pass, &set_shgrp_stencil, NULL); + } + else { + /* Cleanup to release memory */ + DRW_TEXTURE_FREE_SAFE(txl->sss_dir_accum); + DRW_TEXTURE_FREE_SAFE(txl->sss_col_accum); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->sss_accum_fb); + } +} + +void EEVEE_subsurface_cache_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_SSS) != 0) { + /** Screen Space SubSurface Scattering overview + * TODO + */ + psl->sss_blur_ps = DRW_pass_create("Blur Horiz", DRW_STATE_WRITE_COLOR | DRW_STATE_STENCIL_EQUAL); + + DRWState state = DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE | DRW_STATE_STENCIL_EQUAL; + psl->sss_resolve_ps = DRW_pass_create("Blur Vert", state); + psl->sss_accum_ps = DRW_pass_create("Resolve Accum", state); + } +} + +void EEVEE_subsurface_add_pass( + EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, uint sss_id, struct GPUUniformBuffer *sss_profile) +{ + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + GPUTexture **depth_src = GPU_depth_blitting_workaround() ? &effects->sss_stencil : &dtxl->depth; + + DRWShadingGroup *grp = DRW_shgroup_create(e_data.sss_sh[0], psl->sss_blur_ps); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", depth_src); + DRW_shgroup_uniform_texture_ref(grp, "sssData", &effects->sss_data); + DRW_shgroup_uniform_block(grp, "sssProfile", sss_profile); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_stencil_mask(grp, sss_id); + DRW_shgroup_call_add(grp, quad, NULL); + + struct GPUShader *sh = (effects->sss_separate_albedo) ? e_data.sss_sh[2] : e_data.sss_sh[1]; + grp = DRW_shgroup_create(sh, psl->sss_resolve_ps); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", depth_src); + DRW_shgroup_uniform_texture_ref(grp, "sssData", &effects->sss_blur); + DRW_shgroup_uniform_block(grp, "sssProfile", sss_profile); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_stencil_mask(grp, sss_id); + DRW_shgroup_call_add(grp, quad, NULL); + + if (effects->sss_separate_albedo) { + DRW_shgroup_uniform_texture_ref(grp, "sssAlbedo", &effects->sss_albedo); + } + + if (DRW_state_is_image_render()) { + grp = DRW_shgroup_create(e_data.sss_sh[3], psl->sss_accum_ps); + DRW_shgroup_uniform_texture(grp, "utilTex", EEVEE_materials_get_util_tex()); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", depth_src); + DRW_shgroup_uniform_texture_ref(grp, "sssData", &effects->sss_blur); + DRW_shgroup_uniform_texture_ref(grp, "sssAlbedo", &effects->sss_albedo); + DRW_shgroup_uniform_block(grp, "sssProfile", sss_profile); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_stencil_mask(grp, sss_id); + DRW_shgroup_call_add(grp, quad, NULL); + } +} + +void EEVEE_subsurface_data_render(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_SSS) != 0) { + float clear[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + /* Clear sss_data texture only... can this be done in a more clever way? */ + GPU_framebuffer_bind(fbl->sss_clear_fb); + GPU_framebuffer_clear_color(fbl->sss_clear_fb, clear); + + GPU_framebuffer_ensure_config(&fbl->main_fb, { + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_TEXTURE(effects->sss_data), + GPU_ATTACHMENT_TEXTURE(effects->sss_albedo) + }); + + GPU_framebuffer_bind(fbl->main_fb); + DRW_draw_pass(psl->sss_pass); + + /* Restore */ + GPU_framebuffer_ensure_config(&fbl->main_fb, { + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_LEAVE, + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_NONE + }); + } +} + +void EEVEE_subsurface_compute(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_SSS) != 0) { + float clear[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + + DRW_stats_group_start("SSS"); + + if (GPU_depth_blitting_workaround()) { + /* Copy depth channel */ + GPU_framebuffer_blit(fbl->main_fb, 0, fbl->sss_blit_fb, 0, GPU_DEPTH_BIT); + } + else { + /* Copy stencil channel, could be avoided (see EEVEE_subsurface_init) */ + GPU_framebuffer_blit(fbl->main_fb, 0, fbl->sss_blur_fb, 0, GPU_STENCIL_BIT); + } + + /* 1. horizontal pass */ + GPU_framebuffer_bind(fbl->sss_blur_fb); + GPU_framebuffer_clear_color(fbl->sss_blur_fb, clear); + DRW_draw_pass(psl->sss_blur_ps); + + /* 2. vertical pass + Resolve */ + GPU_framebuffer_texture_attach(fbl->sss_resolve_fb, txl->color, 0, 0); + GPU_framebuffer_bind(fbl->sss_resolve_fb); + DRW_draw_pass(psl->sss_resolve_ps); + + GPU_framebuffer_bind(fbl->main_fb); + DRW_stats_group_end(); + } +} + +void EEVEE_subsurface_output_accumulate(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if (((effects->enabled_effects & EFFECT_SSS) != 0) && (fbl->sss_accum_fb != NULL)) { + /* Copy stencil channel, could be avoided (see EEVEE_subsurface_init) */ + GPU_framebuffer_blit(fbl->main_fb, 0, fbl->sss_blur_fb, 0, GPU_STENCIL_BIT); + + /* Only do vertical pass + Resolve */ + GPU_framebuffer_bind(fbl->sss_accum_fb); + DRW_draw_pass(psl->sss_accum_ps); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + } +} + +void EEVEE_subsurface_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.sss_sh[0]); + DRW_SHADER_FREE_SAFE(e_data.sss_sh[1]); + DRW_SHADER_FREE_SAFE(e_data.sss_sh[2]); + DRW_SHADER_FREE_SAFE(e_data.sss_sh[3]); +} diff --git a/source/blender/draw/engines/eevee/eevee_temporal_sampling.c b/source/blender/draw/engines/eevee/eevee_temporal_sampling.c new file mode 100644 index 00000000000..deac0b89b10 --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_temporal_sampling.c @@ -0,0 +1,360 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_temporal_sampling.c + * \ingroup draw_engine + * + * Temporal super sampling technique + */ + +#include "DRW_render.h" + +#include "ED_screen.h" + +#include "BLI_rand.h" +#include "BLI_string_utils.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" +#include "GPU_texture.h" + +#define FILTER_CDF_TABLE_SIZE 512 + +static struct { + /* Pixel filter table: Only blackman-harris for now. */ + bool inited; + float inverted_cdf[FILTER_CDF_TABLE_SIZE]; +} e_data = {false}; /* Engine data */ + +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_bsdf_common_lib_glsl[]; + +static float UNUSED_FUNCTION(filter_box)(float UNUSED(x)) +{ + return 1.0f; +} + +static float filter_blackman_harris(float x) +{ + /* Hardcoded 1px footprint [-0.5..0.5]. We resize later. */ + const float width = 1.0f; + x = 2.0f * M_PI * (x / width + 0.5f); + return 0.35875f - 0.48829f * cosf(x) + 0.14128f * cosf(2.0f * x) - 0.01168f * cosf(3.0f * x); +} + +/* Compute cumulative distribution function of a discrete function. */ +static void compute_cdf(float (*func)(float x), float cdf[FILTER_CDF_TABLE_SIZE]) +{ + cdf[0] = 0.0f; + /* Actual CDF evaluation. */ + for (int u = 0; u < FILTER_CDF_TABLE_SIZE - 1; ++u) { + float x = (float)(u + 1) / (float)(FILTER_CDF_TABLE_SIZE - 1); + cdf[u + 1] = cdf[u] + func(x - 0.5f); /* [-0.5..0.5]. We resize later. */ + } + /* Normalize the CDF. */ + for (int u = 0; u < FILTER_CDF_TABLE_SIZE - 1; u++) { + cdf[u] /= cdf[FILTER_CDF_TABLE_SIZE - 1]; + } + /* Just to make sure. */ + cdf[FILTER_CDF_TABLE_SIZE - 1] = 1.0f; +} + +static void invert_cdf(const float cdf[FILTER_CDF_TABLE_SIZE], float invert_cdf[FILTER_CDF_TABLE_SIZE]) +{ + for (int u = 0; u < FILTER_CDF_TABLE_SIZE; u++) { + float x = (float)u / (float)(FILTER_CDF_TABLE_SIZE - 1); + for (int i = 0; i < FILTER_CDF_TABLE_SIZE; ++i) { + if (cdf[i] >= x) { + if (i == FILTER_CDF_TABLE_SIZE - 1) { + invert_cdf[u] = 1.0f; + } + else { + float t = (x - cdf[i]) / (cdf[i + 1] - cdf[i]); + invert_cdf[u] = ((float)i + t) / (float)(FILTER_CDF_TABLE_SIZE - 1); + } + break; + } + } + } +} + +/* Evaluate a discrete function table with linear interpolation. */ +static float eval_table(float *table, float x) +{ + CLAMP(x, 0.0f, 1.0f); + x = x * (FILTER_CDF_TABLE_SIZE - 1); + + int index = min_ii((int)(x), FILTER_CDF_TABLE_SIZE - 1); + int nindex = min_ii(index + 1, FILTER_CDF_TABLE_SIZE - 1); + float t = x - index; + + return (1.0f - t) * table[index] + t * table[nindex]; +} + +static void eevee_create_cdf_table_temporal_sampling(void) +{ + float *cdf_table = MEM_mallocN(sizeof(float) * FILTER_CDF_TABLE_SIZE, "Eevee Filter CDF table"); + + float filter_width = 2.0f; /* Use a 2 pixel footprint by default. */ + + { + /* Use blackman-harris filter. */ + filter_width *= 2.0f; + compute_cdf(filter_blackman_harris, cdf_table); + } + + invert_cdf(cdf_table, e_data.inverted_cdf); + + /* Scale and offset table. */ + for (int i = 0; i < FILTER_CDF_TABLE_SIZE; ++i) { + e_data.inverted_cdf[i] = (e_data.inverted_cdf[i] - 0.5f) * filter_width; + } + + MEM_freeN(cdf_table); + e_data.inited = true; +} + +void EEVEE_temporal_sampling_matrices_calc( + EEVEE_EffectsInfo *effects, float viewmat[4][4], float persmat[4][4], const double ht_point[2]) +{ + const float *viewport_size = DRW_viewport_size_get(); + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + RenderData *rd = &scene->r; + + float filter_size = rd->gauss; /* Sigh.. Stupid legacy naming. */ + + float ofs_x = eval_table(e_data.inverted_cdf, (float)(ht_point[0])) * filter_size; + float ofs_y = eval_table(e_data.inverted_cdf, (float)(ht_point[1])) * filter_size; + + window_translate_m4( + effects->overide_winmat, persmat, + ofs_x / viewport_size[0], + ofs_y / viewport_size[1]); + + mul_m4_m4m4(effects->overide_persmat, effects->overide_winmat, viewmat); + invert_m4_m4(effects->overide_persinv, effects->overide_persmat); + invert_m4_m4(effects->overide_wininv, effects->overide_winmat); +} + +void EEVEE_temporal_sampling_reset(EEVEE_Data *vedata) +{ + vedata->stl->effects->taa_render_sample = 1; +} + +int EEVEE_temporal_sampling_init(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = vedata->stl; + // EEVEE_FramebufferList *fbl = vedata->fbl; + // EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + int repro_flag = 0; + + if (!e_data.inited) { + eevee_create_cdf_table_temporal_sampling(); + } + + /* Reset for each "redraw". When rendering using ogl render, + * we accumulate the redraw inside the drawing loop in eevee_draw_background(). + * But we do NOT accumulate between "redraw" (as in full draw manager drawloop) + * because the opengl render already does that. */ + effects->taa_render_sample = 1; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + if (((scene_eval->eevee.taa_samples != 1) && + /* FIXME the motion blur camera evaluation is tagging view_updated + * thus making the TAA always reset and never stopping rendering. */ + (effects->enabled_effects & EFFECT_MOTION_BLUR) == 0) || + DRW_state_is_image_render()) + { + float persmat[4][4], viewmat[4][4]; + + if (!DRW_state_is_image_render() && + (scene_eval->eevee.flag & SCE_EEVEE_TAA_REPROJECTION)) + { + repro_flag = EFFECT_TAA_REPROJECT | EFFECT_VELOCITY_BUFFER | EFFECT_DEPTH_DOUBLE_BUFFER | EFFECT_DOUBLE_BUFFER | EFFECT_POST_BUFFER; + effects->taa_reproject_sample = ((effects->taa_reproject_sample + 1) % 16); + } + + /* Until we support reprojection, we need to make sure + * that the history buffer contains correct information. */ + bool view_is_valid = stl->g_data->valid_double_buffer; + + view_is_valid = view_is_valid && (stl->g_data->view_updated == false); + + if (draw_ctx->evil_C != NULL) { + struct wmWindowManager *wm = CTX_wm_manager(draw_ctx->evil_C); + view_is_valid = view_is_valid && (ED_screen_animation_no_scrub(wm) == NULL); + } + + effects->taa_total_sample = scene_eval->eevee.taa_samples; + MAX2(effects->taa_total_sample, 0); + + DRW_viewport_matrix_get(persmat, DRW_MAT_PERS); + DRW_viewport_matrix_get(viewmat, DRW_MAT_VIEW); + DRW_viewport_matrix_get(effects->overide_winmat, DRW_MAT_WIN); + /* The view is jittered by the oglrenderer. So avoid testing in this case. */ + if (!DRW_state_is_image_render()) { + view_is_valid = view_is_valid && compare_m4m4(persmat, effects->prev_drw_persmat, FLT_MIN); + copy_m4_m4(effects->prev_drw_persmat, persmat); + } + + /* Prevent ghosting from probe data. */ + view_is_valid = view_is_valid && (effects->prev_drw_support == DRW_state_draw_support()); + effects->prev_drw_support = DRW_state_draw_support(); + + if (((effects->taa_total_sample == 0) || (effects->taa_current_sample < effects->taa_total_sample)) || + DRW_state_is_image_render()) + { + if (view_is_valid) { + /* OGL render already jitter the camera. */ + if (!DRW_state_is_image_render()) { + effects->taa_current_sample += 1; + repro_flag = 0; + + double ht_point[2]; + double ht_offset[2] = {0.0, 0.0}; + uint ht_primes[2] = {2, 3}; + + BLI_halton_2D(ht_primes, ht_offset, effects->taa_current_sample - 1, ht_point); + + EEVEE_temporal_sampling_matrices_calc(effects, viewmat, persmat, ht_point); + + DRW_viewport_matrix_override_set(effects->overide_persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(effects->overide_persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(effects->overide_winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(effects->overide_wininv, DRW_MAT_WININV); + } + } + else { + effects->taa_current_sample = 1; + } + } + else { + effects->taa_current_sample = 1; + } + + return repro_flag | EFFECT_TAA | EFFECT_DOUBLE_BUFFER | EFFECT_DEPTH_DOUBLE_BUFFER | EFFECT_POST_BUFFER; + } + + effects->taa_current_sample = 1; + + return repro_flag; +} + +void EEVEE_temporal_sampling_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & (EFFECT_TAA | EFFECT_TAA_REPROJECT)) != 0) { + struct GPUShader *sh = EEVEE_shaders_taa_resolve_sh_get(effects->enabled_effects); + + psl->taa_resolve = DRW_pass_create("Temporal AA Resolve", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(sh, psl->taa_resolve); + + DRW_shgroup_uniform_texture_ref(grp, "colorHistoryBuffer", &txl->taa_history); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &effects->source_buffer); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + if (effects->enabled_effects & EFFECT_TAA_REPROJECT) { + // DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + DRW_shgroup_uniform_texture_ref(grp, "velocityBuffer", &effects->velocity_tx); + } + else { + DRW_shgroup_uniform_float(grp, "alpha", &effects->taa_alpha, 1); + } + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } +} + +void EEVEE_temporal_sampling_draw(EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & (EFFECT_TAA | EFFECT_TAA_REPROJECT)) != 0) { + if ((effects->enabled_effects & EFFECT_TAA) != 0 && effects->taa_current_sample != 1) { + if (DRW_state_is_image_render()) { + /* See EEVEE_temporal_sampling_init() for more details. */ + effects->taa_alpha = 1.0f / (float)(effects->taa_render_sample); + } + else { + effects->taa_alpha = 1.0f / (float)(effects->taa_current_sample); + } + + GPU_framebuffer_bind(effects->target_buffer); + DRW_draw_pass(psl->taa_resolve); + + /* Restore the depth from sample 1. */ + if (!DRW_state_is_image_render()) { + GPU_framebuffer_blit(fbl->double_buffer_depth_fb, 0, fbl->main_fb, 0, GPU_DEPTH_BIT); + } + + SWAP_BUFFERS_TAA(); + } + else { + if (!DRW_state_is_image_render()) { + /* Save the depth buffer for the next frame. + * This saves us from doing anything special + * in the other mode engines. */ + GPU_framebuffer_blit(fbl->main_fb, 0, fbl->double_buffer_depth_fb, 0, GPU_DEPTH_BIT); + } + + /* Do reprojection for noise reduction */ + /* TODO : do AA jitter if in only render view. */ + if (!DRW_state_is_image_render() && + (effects->enabled_effects & EFFECT_TAA_REPROJECT) != 0 && + stl->g_data->valid_taa_history) + { + GPU_framebuffer_bind(effects->target_buffer); + DRW_draw_pass(psl->taa_resolve); + SWAP_BUFFERS_TAA(); + } + else { + struct GPUFrameBuffer *source_fb = (effects->target_buffer == fbl->main_color_fb) ? fbl->effect_color_fb : fbl->main_color_fb; + GPU_framebuffer_blit(source_fb, 0, fbl->taa_history_color_fb, 0, GPU_COLOR_BIT); + } + } + + /* Make each loop count when doing a render. */ + if (DRW_state_is_image_render()) { + effects->taa_render_sample += 1; + effects->taa_current_sample += 1; + } + else { + if ((effects->taa_total_sample == 0) || + (effects->taa_current_sample < effects->taa_total_sample)) + { + DRW_viewport_request_redraw(); + } + } + } +} diff --git a/source/blender/draw/engines/eevee/eevee_volumes.c b/source/blender/draw/engines/eevee/eevee_volumes.c new file mode 100644 index 00000000000..4fffa3f285c --- /dev/null +++ b/source/blender/draw/engines/eevee/eevee_volumes.c @@ -0,0 +1,621 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file eevee_volumes.c + * \ingroup draw_engine + * + * Volumetric effects rendering using frostbite approach. + */ + +#include "DRW_render.h" + +#include "BLI_rand.h" +#include "BLI_string_utils.h" + +#include "DNA_object_force_types.h" +#include "DNA_smoke_types.h" +#include "DNA_world_types.h" + +#include "BKE_global.h" /* for G.debug_value */ +#include "BKE_modifier.h" +#include "BKE_mesh.h" +#include "BKE_object.h" + +#include "ED_screen.h" + +#include "DEG_depsgraph_query.h" + +#include "eevee_private.h" +#include "GPU_draw.h" +#include "GPU_texture.h" +#include "GPU_material.h" + +static struct { + char *volumetric_common_lib; + char *volumetric_common_lamps_lib; + + struct GPUShader *volumetric_clear_sh; + struct GPUShader *volumetric_scatter_sh; + struct GPUShader *volumetric_scatter_with_lamps_sh; + struct GPUShader *volumetric_integration_sh; + struct GPUShader *volumetric_resolve_sh; + + GPUTexture *color_src; + GPUTexture *depth_src; + + /* List of all smoke domains rendered within this frame. */ + ListBase smoke_domains; +} e_data = {NULL}; /* Engine data */ + +extern char datatoc_bsdf_common_lib_glsl[]; +extern char datatoc_common_uniforms_lib_glsl[]; +extern char datatoc_common_view_lib_glsl[]; +extern char datatoc_octahedron_lib_glsl[]; +extern char datatoc_irradiance_lib_glsl[]; +extern char datatoc_lamps_lib_glsl[]; +extern char datatoc_volumetric_frag_glsl[]; +extern char datatoc_volumetric_geom_glsl[]; +extern char datatoc_volumetric_vert_glsl[]; +extern char datatoc_volumetric_resolve_frag_glsl[]; +extern char datatoc_volumetric_scatter_frag_glsl[]; +extern char datatoc_volumetric_integration_frag_glsl[]; +extern char datatoc_volumetric_lib_glsl[]; +extern char datatoc_common_fullscreen_vert_glsl[]; + +static void eevee_create_shader_volumes(void) +{ + e_data.volumetric_common_lib = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_volumetric_lib_glsl); + + e_data.volumetric_common_lamps_lib = BLI_string_joinN( + datatoc_common_view_lib_glsl, + datatoc_common_uniforms_lib_glsl, + datatoc_bsdf_common_lib_glsl, + datatoc_octahedron_lib_glsl, + datatoc_irradiance_lib_glsl, + datatoc_lamps_lib_glsl, + datatoc_volumetric_lib_glsl); + + e_data.volumetric_clear_sh = DRW_shader_create_with_lib( + datatoc_volumetric_vert_glsl, + datatoc_volumetric_geom_glsl, + datatoc_volumetric_frag_glsl, + e_data.volumetric_common_lib, + "#define VOLUMETRICS\n" + "#define CLEAR\n"); + e_data.volumetric_scatter_sh = DRW_shader_create_with_lib( + datatoc_volumetric_vert_glsl, + datatoc_volumetric_geom_glsl, + datatoc_volumetric_scatter_frag_glsl, + e_data.volumetric_common_lamps_lib, + SHADER_DEFINES + "#define VOLUMETRICS\n" + "#define VOLUME_SHADOW\n"); + e_data.volumetric_scatter_with_lamps_sh = DRW_shader_create_with_lib( + datatoc_volumetric_vert_glsl, + datatoc_volumetric_geom_glsl, + datatoc_volumetric_scatter_frag_glsl, + e_data.volumetric_common_lamps_lib, + SHADER_DEFINES + "#define VOLUMETRICS\n" + "#define VOLUME_LIGHTING\n" + "#define VOLUME_SHADOW\n"); + e_data.volumetric_integration_sh = DRW_shader_create_with_lib( + datatoc_volumetric_vert_glsl, + datatoc_volumetric_geom_glsl, + datatoc_volumetric_integration_frag_glsl, + e_data.volumetric_common_lib, NULL); + e_data.volumetric_resolve_sh = DRW_shader_create_with_lib( + datatoc_common_fullscreen_vert_glsl, NULL, + datatoc_volumetric_resolve_frag_glsl, + e_data.volumetric_common_lib, NULL); +} + +void EEVEE_volumes_set_jitter(EEVEE_ViewLayerData *sldata, uint current_sample) +{ + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + + double ht_point[3]; + double ht_offset[3] = {0.0, 0.0}; + uint ht_primes[3] = {3, 7, 2}; + + BLI_halton_3D(ht_primes, ht_offset, current_sample, ht_point); + + common_data->vol_jitter[0] = (float)ht_point[0]; + common_data->vol_jitter[1] = (float)ht_point[1]; + common_data->vol_jitter[2] = (float)ht_point[2]; +} + +int EEVEE_volumes_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_StorageList *stl = vedata->stl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene_eval = DEG_get_evaluated_scene(draw_ctx->depsgraph); + + const float *viewport_size = DRW_viewport_size_get(); + + BLI_listbase_clear(&e_data.smoke_domains); + + if (scene_eval->eevee.flag & SCE_EEVEE_VOLUMETRIC_ENABLED) { + + /* Shaders */ + if (!e_data.volumetric_scatter_sh) { + eevee_create_shader_volumes(); + } + + const int tile_size = scene_eval->eevee.volumetric_tile_size; + + /* Find Froxel Texture resolution. */ + int tex_size[3]; + + tex_size[0] = (int)ceilf(fmaxf(1.0f, viewport_size[0] / (float)tile_size)); + tex_size[1] = (int)ceilf(fmaxf(1.0f, viewport_size[1] / (float)tile_size)); + tex_size[2] = max_ii(scene_eval->eevee.volumetric_samples, 1); + + common_data->vol_coord_scale[0] = viewport_size[0] / (float)(tile_size * tex_size[0]); + common_data->vol_coord_scale[1] = viewport_size[1] / (float)(tile_size * tex_size[1]); + + /* TODO compute snap to maxZBuffer for clustered rendering */ + + if ((common_data->vol_tex_size[0] != tex_size[0]) || + (common_data->vol_tex_size[1] != tex_size[1]) || + (common_data->vol_tex_size[2] != tex_size[2])) + { + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_scattering); + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_extinction); + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_emission); + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_phase); + DRW_TEXTURE_FREE_SAFE(txl->volume_scatter); + DRW_TEXTURE_FREE_SAFE(txl->volume_transmittance); + DRW_TEXTURE_FREE_SAFE(txl->volume_scatter_history); + DRW_TEXTURE_FREE_SAFE(txl->volume_transmittance_history); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->volumetric_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->volumetric_scat_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->volumetric_integ_fb); + common_data->vol_tex_size[0] = tex_size[0]; + common_data->vol_tex_size[1] = tex_size[1]; + common_data->vol_tex_size[2] = tex_size[2]; + + common_data->vol_inv_tex_size[0] = 1.0f / (float)(tex_size[0]); + common_data->vol_inv_tex_size[1] = 1.0f / (float)(tex_size[1]); + common_data->vol_inv_tex_size[2] = 1.0f / (float)(tex_size[2]); + } + + /* Like frostbite's paper, 5% blend of the new frame. */ + common_data->vol_history_alpha = (txl->volume_prop_scattering == NULL) ? 0.0f : 0.95f; + + if (txl->volume_prop_scattering == NULL) { + /* Volume properties: We evaluate all volumetric objects + * and store their final properties into each froxel */ + txl->volume_prop_scattering = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + txl->volume_prop_extinction = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + txl->volume_prop_emission = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + txl->volume_prop_phase = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_RG16F, DRW_TEX_FILTER, NULL); + + /* Volume scattering: We compute for each froxel the + * Scattered light towards the view. We also resolve temporal + * super sampling during this stage. */ + txl->volume_scatter = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + txl->volume_transmittance = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + + /* Final integration: We compute for each froxel the + * amount of scattered light and extinction coef at this + * given depth. We use theses textures as double buffer + * for the volumetric history. */ + txl->volume_scatter_history = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + txl->volume_transmittance_history = DRW_texture_create_3D(tex_size[0], tex_size[1], tex_size[2], + GPU_R11F_G11F_B10F, DRW_TEX_FILTER, NULL); + } + + /* Temporal Super sampling jitter */ + uint ht_primes[3] = {3, 7, 2}; + uint current_sample = 0; + + /* If TAA is in use do not use the history buffer. */ + bool do_taa = ((effects->enabled_effects & EFFECT_TAA) != 0); + + if (draw_ctx->evil_C != NULL) { + struct wmWindowManager *wm = CTX_wm_manager(draw_ctx->evil_C); + do_taa = do_taa && (ED_screen_animation_no_scrub(wm) == NULL); + } + + if (do_taa) { + common_data->vol_history_alpha = 0.0f; + current_sample = effects->taa_current_sample - 1; + effects->volume_current_sample = -1; + } + else { + const uint max_sample = (ht_primes[0] * ht_primes[1] * ht_primes[2]); + current_sample = effects->volume_current_sample = (effects->volume_current_sample + 1) % max_sample; + if (current_sample != max_sample - 1) { + DRW_viewport_request_redraw(); + } + } + + EEVEE_volumes_set_jitter(sldata, current_sample); + + /* Framebuffer setup */ + GPU_framebuffer_ensure_config(&fbl->volumetric_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->volume_prop_scattering), + GPU_ATTACHMENT_TEXTURE(txl->volume_prop_extinction), + GPU_ATTACHMENT_TEXTURE(txl->volume_prop_emission), + GPU_ATTACHMENT_TEXTURE(txl->volume_prop_phase) + }); + GPU_framebuffer_ensure_config(&fbl->volumetric_scat_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->volume_scatter), + GPU_ATTACHMENT_TEXTURE(txl->volume_transmittance) + }); + GPU_framebuffer_ensure_config(&fbl->volumetric_integ_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->volume_scatter_history), + GPU_ATTACHMENT_TEXTURE(txl->volume_transmittance_history) + }); + + float integration_start = scene_eval->eevee.volumetric_start; + float integration_end = scene_eval->eevee.volumetric_end; + common_data->vol_light_clamp = scene_eval->eevee.volumetric_light_clamp; + common_data->vol_shadow_steps = (float)scene_eval->eevee.volumetric_shadow_samples; + if ((scene_eval->eevee.flag & SCE_EEVEE_VOLUMETRIC_SHADOWS) == 0) { + common_data->vol_shadow_steps = 0; + } + + if (DRW_viewport_is_persp_get()) { + float sample_distribution = scene_eval->eevee.volumetric_sample_distribution; + sample_distribution = 4.0f * (1.00001f - sample_distribution); + + const float clip_start = common_data->view_vecs[0][2]; + /* Negate */ + float near = integration_start = min_ff(-integration_start, clip_start - 1e-4f); + float far = integration_end = min_ff(-integration_end, near - 1e-4f); + + common_data->vol_depth_param[0] = (far - near * exp2(1.0f / sample_distribution)) / (far - near); + common_data->vol_depth_param[1] = (1.0f - common_data->vol_depth_param[0]) / near; + common_data->vol_depth_param[2] = sample_distribution; + } + else { + const float clip_start = common_data->view_vecs[0][2]; + const float clip_end = clip_start + common_data->view_vecs[1][2]; + integration_start = min_ff(integration_end, clip_start); + integration_end = max_ff(-integration_end, clip_end); + + common_data->vol_depth_param[0] = integration_start; + common_data->vol_depth_param[1] = integration_end; + common_data->vol_depth_param[2] = 1.0f / (integration_end - integration_start); + } + + /* Disable clamp if equal to 0. */ + if (common_data->vol_light_clamp == 0.0) { + common_data->vol_light_clamp = FLT_MAX; + } + + common_data->vol_use_lights = (scene_eval->eevee.flag & SCE_EEVEE_VOLUMETRIC_LIGHTS) != 0; + + return EFFECT_VOLUMETRIC | EFFECT_POST_BUFFER; + } + + /* Cleanup to release memory */ + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_scattering); + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_extinction); + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_emission); + DRW_TEXTURE_FREE_SAFE(txl->volume_prop_phase); + DRW_TEXTURE_FREE_SAFE(txl->volume_scatter); + DRW_TEXTURE_FREE_SAFE(txl->volume_transmittance); + DRW_TEXTURE_FREE_SAFE(txl->volume_scatter_history); + DRW_TEXTURE_FREE_SAFE(txl->volume_transmittance_history); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->volumetric_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->volumetric_scat_fb); + GPU_FRAMEBUFFER_FREE_SAFE(fbl->volumetric_integ_fb); + + return 0; +} + +void EEVEE_volumes_cache_init(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_EffectsInfo *effects = stl->effects; + LightCache *lcache = stl->g_data->light_cache; + EEVEE_CommonUniformBuffer *common_data = &sldata->common_data; + + if ((effects->enabled_effects & EFFECT_VOLUMETRIC) != 0) { + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + DRWShadingGroup *grp = NULL; + + /* Quick breakdown of the Volumetric rendering: + * + * The rendering is separated in 4 stages: + * + * - Material Parameters : we collect volume properties of + * all participating media in the scene and store them in + * a 3D texture aligned with the 3D frustum. + * This is done in 2 passes, one that clear the texture + * and/or evaluate the world volumes, and the 2nd one that + * additively render object volumes. + * + * - Light Scattering : the volume properties then are sampled + * and light scattering is evaluated for each cell of the + * volume texture. Temporal super-sampling (if enabled) occurs here. + * + * - Volume Integration : the scattered light and extinction is + * integrated (accumulated) along the view-rays. The result is stored + * for every cell in another texture. + * + * - Full-screen Resolve : From the previous stage, we get two + * 3D textures that contains integrated scattered light and extinction + * for "every" positions in the frustum. We only need to sample + * them and blend the scene color with those factors. This also + * work for alpha blended materials. + **/ + + /* World pass is not additive as it also clear the buffer. */ + psl->volumetric_world_ps = DRW_pass_create("Volumetric World", DRW_STATE_WRITE_COLOR); + + /* World Volumetric */ + struct World *wo = scene->world; + if (wo != NULL && wo->use_nodes && wo->nodetree) { + struct GPUMaterial *mat = EEVEE_material_world_volume_get(scene, wo); + + grp = DRW_shgroup_material_empty_tri_batch_create(mat, + psl->volumetric_world_ps, + common_data->vol_tex_size[2]); + + if (grp) { + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + /* TODO (fclem): remove those (need to clean the GLSL files). */ + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(grp, "shadow_block", sldata->shadow_ubo); + } + } + + if (grp == NULL) { + /* If no world or volume material is present just clear the buffer with this drawcall */ + grp = DRW_shgroup_empty_tri_batch_create(e_data.volumetric_clear_sh, + psl->volumetric_world_ps, + common_data->vol_tex_size[2]); + + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + } + + /* Volumetric Objects */ + psl->volumetric_objects_ps = DRW_pass_create("Volumetric Properties", DRW_STATE_WRITE_COLOR | + DRW_STATE_ADDITIVE); + + struct GPUShader *scatter_sh = (common_data->vol_use_lights) ? e_data.volumetric_scatter_with_lamps_sh + : e_data.volumetric_scatter_sh; + psl->volumetric_scatter_ps = DRW_pass_create("Volumetric Scattering", DRW_STATE_WRITE_COLOR); + grp = DRW_shgroup_empty_tri_batch_create(scatter_sh, psl->volumetric_scatter_ps, + common_data->vol_tex_size[2]); + DRW_shgroup_uniform_texture_ref(grp, "irradianceGrid", &lcache->grid_tx.tex); + DRW_shgroup_uniform_texture_ref(grp, "shadowCubeTexture", &sldata->shadow_cube_pool); + DRW_shgroup_uniform_texture_ref(grp, "shadowCascadeTexture", &sldata->shadow_cascade_pool); + DRW_shgroup_uniform_texture_ref(grp, "volumeScattering", &txl->volume_prop_scattering); + DRW_shgroup_uniform_texture_ref(grp, "volumeExtinction", &txl->volume_prop_extinction); + DRW_shgroup_uniform_texture_ref(grp, "volumeEmission", &txl->volume_prop_emission); + DRW_shgroup_uniform_texture_ref(grp, "volumePhase", &txl->volume_prop_phase); + DRW_shgroup_uniform_texture_ref(grp, "historyScattering", &txl->volume_scatter_history); + DRW_shgroup_uniform_texture_ref(grp, "historyTransmittance", &txl->volume_transmittance_history); + DRW_shgroup_uniform_block(grp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(grp, "shadow_block", sldata->shadow_ubo); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + psl->volumetric_integration_ps = DRW_pass_create("Volumetric Integration", DRW_STATE_WRITE_COLOR); + grp = DRW_shgroup_empty_tri_batch_create(e_data.volumetric_integration_sh, + psl->volumetric_integration_ps, + common_data->vol_tex_size[2]); + DRW_shgroup_uniform_texture_ref(grp, "volumeScattering", &txl->volume_scatter); + DRW_shgroup_uniform_texture_ref(grp, "volumeExtinction", &txl->volume_transmittance); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + + psl->volumetric_resolve_ps = DRW_pass_create("Volumetric Resolve", DRW_STATE_WRITE_COLOR); + grp = DRW_shgroup_create(e_data.volumetric_resolve_sh, psl->volumetric_resolve_ps); + DRW_shgroup_uniform_texture_ref(grp, "inScattering", &txl->volume_scatter); + DRW_shgroup_uniform_texture_ref(grp, "inTransmittance", &txl->volume_transmittance); + DRW_shgroup_uniform_texture_ref(grp, "inSceneColor", &e_data.color_src); + DRW_shgroup_uniform_texture_ref(grp, "inSceneDepth", &e_data.depth_src); + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } +} + +void EEVEE_volumes_cache_object_add(EEVEE_ViewLayerData *sldata, EEVEE_Data *vedata, Scene *scene, Object *ob) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + + float *texcoloc = NULL; + float *texcosize = NULL; + struct ModifierData *md = NULL; + Material *ma = give_current_material(ob, 1); + + if (ma == NULL) { + return; + } + + struct GPUMaterial *mat = EEVEE_material_mesh_volume_get(scene, ma); + + /* If shader failed to compile or is currently compiling. */ + if (GPU_material_status(mat) != GPU_MAT_SUCCESS) { + return; + } + + DRWShadingGroup *grp = DRW_shgroup_material_empty_tri_batch_create(mat, vedata->psl->volumetric_objects_ps, sldata->common_data.vol_tex_size[2]); + + /* Making sure it's updated. */ + invert_m4_m4(ob->imat, ob->obmat); + + BKE_mesh_texspace_get_reference((struct Mesh *)ob->data, NULL, &texcoloc, NULL, &texcosize); + + /* TODO(fclem) remove those "unnecessary" UBOs */ + DRW_shgroup_uniform_block(grp, "planar_block", sldata->planar_ubo); + DRW_shgroup_uniform_block(grp, "probe_block", sldata->probe_ubo); + DRW_shgroup_uniform_block(grp, "shadow_block", sldata->shadow_ubo); + DRW_shgroup_uniform_block(grp, "light_block", sldata->light_ubo); + DRW_shgroup_uniform_block(grp, "grid_block", sldata->grid_ubo); + + DRW_shgroup_uniform_block(grp, "common_block", sldata->common_ubo); + DRW_shgroup_uniform_mat4(grp, "volumeObjectMatrix", ob->imat); + DRW_shgroup_uniform_vec3(grp, "volumeOrcoLoc", texcoloc, 1); + DRW_shgroup_uniform_vec3(grp, "volumeOrcoSize", texcosize, 1); + + /* Smoke Simulation */ + if (((ob->base_flag & BASE_FROMDUPLI) == 0) && + (md = modifiers_findByType(ob, eModifierType_Smoke)) && + (modifier_isEnabled(scene, md, eModifierMode_Realtime))) + { + SmokeModifierData *smd = (SmokeModifierData *)md; + SmokeDomainSettings *sds = smd->domain; + + if (sds == NULL) { + return; + } + + /* Don't show smoke before simulation starts, this could be made an option in the future. */ + const bool show_smoke = ((int)DEG_get_ctime(draw_ctx->depsgraph) >= sds->point_cache[0]->startframe); + + if (sds->fluid && show_smoke) { + if (!sds->wt || !(sds->viewsettings & MOD_SMOKE_VIEW_SHOWBIG)) { + GPU_create_smoke(smd, 0); + } + else if (sds->wt && (sds->viewsettings & MOD_SMOKE_VIEW_SHOWBIG)) { + GPU_create_smoke(smd, 1); + } + BLI_addtail(&e_data.smoke_domains, BLI_genericNodeN(smd)); + } + + if (sds->tex != NULL) { + DRW_shgroup_uniform_texture_ref(grp, "sampdensity", &sds->tex); + } + if (sds->tex_flame != NULL) { + DRW_shgroup_uniform_texture_ref(grp, "sampflame", &sds->tex_flame); + } + + /* Output is such that 0..1 maps to 0..1000K */ + DRW_shgroup_uniform_vec2(grp, "unftemperature", &sds->flame_ignition, 1); + } +} + +void EEVEE_volumes_compute(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + if ((effects->enabled_effects & EFFECT_VOLUMETRIC) != 0) { + DRW_stats_group_start("Volumetrics"); + + /* Step 1: Participating Media Properties */ + GPU_framebuffer_bind(fbl->volumetric_fb); + DRW_draw_pass(psl->volumetric_world_ps); + DRW_draw_pass(psl->volumetric_objects_ps); + + /* Step 2: Scatter Light */ + GPU_framebuffer_bind(fbl->volumetric_scat_fb); + DRW_draw_pass(psl->volumetric_scatter_ps); + + /* Step 3: Integration */ + GPU_framebuffer_bind(fbl->volumetric_integ_fb); + DRW_draw_pass(psl->volumetric_integration_ps); + + /* Swap volume history buffers */ + SWAP(struct GPUFrameBuffer *, fbl->volumetric_scat_fb, fbl->volumetric_integ_fb); + SWAP(GPUTexture *, txl->volume_scatter, txl->volume_scatter_history); + SWAP(GPUTexture *, txl->volume_transmittance, txl->volume_transmittance_history); + + /* Restore */ + GPU_framebuffer_bind(fbl->main_fb); + + DRW_stats_group_end(); + } +} + +void EEVEE_volumes_resolve(EEVEE_ViewLayerData *UNUSED(sldata), EEVEE_Data *vedata) +{ + EEVEE_PassList *psl = vedata->psl; + EEVEE_TextureList *txl = vedata->txl; + EEVEE_FramebufferList *fbl = vedata->fbl; + EEVEE_StorageList *stl = vedata->stl; + EEVEE_EffectsInfo *effects = stl->effects; + + if ((effects->enabled_effects & EFFECT_VOLUMETRIC) != 0) { + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + + e_data.color_src = txl->color; + e_data.depth_src = dtxl->depth; + + /* Step 4: Apply for opaque */ + GPU_framebuffer_bind(fbl->effect_color_fb); + DRW_draw_pass(psl->volumetric_resolve_ps); + + /* Swap the buffers and rebind depth to the current buffer */ + SWAP(GPUFrameBuffer *, fbl->main_fb, fbl->effect_fb); + SWAP(GPUFrameBuffer *, fbl->main_color_fb, fbl->effect_color_fb); + SWAP(GPUTexture *, txl->color, txl->color_post); + + /* Restore */ + GPU_framebuffer_texture_detach(fbl->effect_fb, dtxl->depth); + GPU_framebuffer_texture_attach(fbl->main_fb, dtxl->depth, 0, 0); + GPU_framebuffer_bind(fbl->main_fb); + } +} + +void EEVEE_volumes_free_smoke_textures(void) +{ + /* Free Smoke Textures after rendering */ + for (LinkData *link = e_data.smoke_domains.first; link; link = link->next) { + SmokeModifierData *smd = (SmokeModifierData *)link->data; + GPU_free_smoke(smd); + } + BLI_freelistN(&e_data.smoke_domains); +} + +void EEVEE_volumes_free(void) +{ + MEM_SAFE_FREE(e_data.volumetric_common_lib); + MEM_SAFE_FREE(e_data.volumetric_common_lamps_lib); + + DRW_SHADER_FREE_SAFE(e_data.volumetric_clear_sh); + DRW_SHADER_FREE_SAFE(e_data.volumetric_scatter_sh); + DRW_SHADER_FREE_SAFE(e_data.volumetric_scatter_with_lamps_sh); + DRW_SHADER_FREE_SAFE(e_data.volumetric_integration_sh); + DRW_SHADER_FREE_SAFE(e_data.volumetric_resolve_sh); +} diff --git a/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl b/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl new file mode 100644 index 00000000000..40c6bb1f1e0 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/ambient_occlusion_lib.glsl @@ -0,0 +1,282 @@ + +/* Based on Practical Realtime Strategies for Accurate Indirect Occlusion + * http://blog.selfshadow.com/publications/s2016-shading-course/activision/s2016_pbs_activision_occlusion.pdf + * http://blog.selfshadow.com/publications/s2016-shading-course/activision/s2016_pbs_activision_occlusion.pptx */ + +#if defined(MESH_SHADER) +# if !defined(USE_ALPHA_HASH) +# if !defined(USE_ALPHA_CLIP) +# if !defined(SHADOW_SHADER) +# if !defined(USE_MULTIPLY) +# if !defined(USE_ALPHA_BLEND) +# define ENABLE_DEFERED_AO +# endif +# endif +# endif +# endif +# endif +#endif + +#ifndef ENABLE_DEFERED_AO +# if defined(STEP_RESOLVE) +# define ENABLE_DEFERED_AO +# endif +#endif + +#define MAX_PHI_STEP 32 +#define MAX_SEARCH_ITER 32 +#define MAX_LOD 6.0 + +#ifndef UTIL_TEX +#define UTIL_TEX +uniform sampler2DArray utilTex; +#define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) +#endif /* UTIL_TEX */ + +uniform sampler2D horizonBuffer; + +/* aoSettings flags */ +#define USE_AO 1 +#define USE_BENT_NORMAL 2 +#define USE_DENOISE 4 + +vec4 pack_horizons(vec4 v) { return v * 0.5 + 0.5; } +vec4 unpack_horizons(vec4 v) { return v * 2.0 - 1.0; } + +/* Returns maximum screen distance an AO ray can travel for a given view depth */ +vec2 get_max_dir(float view_depth) +{ + float homcco = ProjectionMatrix[2][3] * view_depth + ProjectionMatrix[3][3]; + float max_dist = aoDistance / homcco; + return vec2(ProjectionMatrix[0][0], ProjectionMatrix[1][1]) * max_dist; +} + +vec2 get_ao_dir(float jitter) +{ + /* Only half a turn because we integrate in slices. */ + jitter *= M_PI; + return vec2(cos(jitter), sin(jitter)); +} + +void get_max_horizon_grouped(vec4 co1, vec4 co2, vec3 x, float lod, inout float h) +{ + int mip = int(lod) + hizMipOffset; + co1 *= mipRatio[mip].xyxy; + co2 *= mipRatio[mip].xyxy; + + float depth1 = textureLod(maxzBuffer, co1.xy, floor(lod)).r; + float depth2 = textureLod(maxzBuffer, co1.zw, floor(lod)).r; + float depth3 = textureLod(maxzBuffer, co2.xy, floor(lod)).r; + float depth4 = textureLod(maxzBuffer, co2.zw, floor(lod)).r; + + vec4 len, s_h; + + vec3 s1 = get_view_space_from_depth(co1.xy, depth1); /* s View coordinate */ + vec3 omega_s1 = s1 - x; + len.x = length(omega_s1); + s_h.x = omega_s1.z / len.x; + + vec3 s2 = get_view_space_from_depth(co1.zw, depth2); /* s View coordinate */ + vec3 omega_s2 = s2 - x; + len.y = length(omega_s2); + s_h.y = omega_s2.z / len.y; + + vec3 s3 = get_view_space_from_depth(co2.xy, depth3); /* s View coordinate */ + vec3 omega_s3 = s3 - x; + len.z = length(omega_s3); + s_h.z = omega_s3.z / len.z; + + vec3 s4 = get_view_space_from_depth(co2.zw, depth4); /* s View coordinate */ + vec3 omega_s4 = s4 - x; + len.w = length(omega_s4); + s_h.w = omega_s4.z / len.w; + + /* Blend weight after half the aoDistance to fade artifacts */ + vec4 blend = saturate((1.0 - len / aoDistance) * 2.0); + + h = mix(h, max(h, s_h.x), blend.x); + h = mix(h, max(h, s_h.y), blend.y); + h = mix(h, max(h, s_h.z), blend.z); + h = mix(h, max(h, s_h.w), blend.w); +} + +vec2 search_horizon_sweep(vec2 t_phi, vec3 pos, vec2 uvs, float jitter, vec2 max_dir) +{ + max_dir *= max_v2(abs(t_phi)); + + /* Convert to pixel space. */ + t_phi /= vec2(textureSize(maxzBuffer, 0)); + + /* Avoid division by 0 */ + t_phi += vec2(1e-5); + + jitter *= 0.25; + + /* Compute end points */ + vec2 corner1 = min(vec2(1.0) - uvs, max_dir); /* Top right */ + vec2 corner2 = max(vec2(0.0) - uvs, -max_dir); /* Bottom left */ + vec2 iter1 = corner1 / t_phi; + vec2 iter2 = corner2 / t_phi; + + vec2 min_iter = max(-iter1, -iter2); + vec2 max_iter = max( iter1, iter2); + + vec2 times = vec2(-min_v2(min_iter), min_v2(max_iter)); + + vec2 h = vec2(-1.0); /* init at cos(pi) */ + + /* This is freaking sexy optimized. */ + for (float i = 0.0, ofs = 4.0, time = -1.0; + i < MAX_SEARCH_ITER && time > times.x; + i++, time -= ofs, ofs = min(exp2(MAX_LOD) * 4.0, ofs + ofs * aoQuality)) + { + vec4 t = max(times.xxxx, vec4(time) - (vec4(0.25, 0.5, 0.75, 1.0) - jitter) * ofs); + vec4 cos1 = uvs.xyxy + t_phi.xyxy * t.xxyy; + vec4 cos2 = uvs.xyxy + t_phi.xyxy * t.zzww; + float lod = min(MAX_LOD, max(i - jitter * 4.0, 0.0) * aoQuality); + get_max_horizon_grouped(cos1, cos2, pos, lod, h.y); + } + + for (float i = 0.0, ofs = 4.0, time = 1.0; + i < MAX_SEARCH_ITER && time < times.y; + i++, time += ofs, ofs = min(exp2(MAX_LOD) * 4.0, ofs + ofs * aoQuality)) + { + vec4 t = min(times.yyyy, vec4(time) + (vec4(0.25, 0.5, 0.75, 1.0) - jitter) * ofs); + vec4 cos1 = uvs.xyxy + t_phi.xyxy * t.xxyy; + vec4 cos2 = uvs.xyxy + t_phi.xyxy * t.zzww; + float lod = min(MAX_LOD, max(i - jitter * 4.0, 0.0) * aoQuality); + get_max_horizon_grouped(cos1, cos2, pos, lod, h.x); + } + + return h; +} + +void integrate_slice(vec3 normal, vec2 t_phi, vec2 horizons, inout float visibility, inout vec3 bent_normal) +{ + /* Projecting Normal to Plane P defined by t_phi and omega_o */ + vec3 np = vec3(t_phi.y, -t_phi.x, 0.0); /* Normal vector to Integration plane */ + vec3 t = vec3(-t_phi, 0.0); + vec3 n_proj = normal - np * dot(np, normal); + float n_proj_len = max(1e-16, length(n_proj)); + + float cos_n = clamp(n_proj.z / n_proj_len, -1.0, 1.0); + float n = sign(dot(n_proj, t)) * fast_acos(cos_n); /* Angle between view vec and normal */ + + /* (Slide 54) */ + vec2 h = fast_acos(horizons); + h.x = -h.x; + + /* Clamping thetas (slide 58) */ + h.x = n + max(h.x - n, -M_PI_2); + h.y = n + min(h.y - n, M_PI_2); + + /* Solving inner integral */ + vec2 h_2 = 2.0 * h; + vec2 vd = -cos(h_2 - n) + cos_n + h_2 * sin(n); + float vis = (vd.x + vd.y) * 0.25 * n_proj_len; + + visibility += vis; + + /* Finding Bent normal */ + float b_angle = (h.x + h.y) * 0.5; + /* The 0.5 factor below is here to equilibrate the accumulated vectors. + * (sin(b_angle) * -t_phi) will accumulate to (phi_step * result_nor.xy * 0.5). + * (cos(b_angle) * 0.5) will accumulate to (phi_step * result_nor.z * 0.5). */ + bent_normal += vec3(sin(b_angle) * -t_phi, cos(b_angle) * 0.5); +} + +void gtao_deferred( + vec3 normal, vec4 noise, float frag_depth, out float visibility, out vec3 bent_normal) +{ + /* Fetch early, hide latency! */ + vec4 horizons = texelFetch(horizonBuffer, ivec2(gl_FragCoord.xy), 0); + + vec4 dirs; + dirs.xy = get_ao_dir(noise.x * 0.5); + dirs.zw = get_ao_dir(noise.x * 0.5 + 0.5); + + bent_normal = vec3(0.0); + visibility = 0.0; + + horizons = unpack_horizons(horizons); + + integrate_slice(normal, dirs.xy, horizons.xy, visibility, bent_normal); + integrate_slice(normal, dirs.zw, horizons.zw, visibility, bent_normal); + + visibility *= 0.5; /* We integrated 2 slices. */ + + bent_normal = normalize(bent_normal); +} + +void gtao(vec3 normal, vec3 position, vec4 noise, out float visibility, out vec3 bent_normal) +{ + vec2 uvs = get_uvs_from_view(position); + vec2 max_dir = get_max_dir(position.z); + vec2 dir = get_ao_dir(noise.x); + + bent_normal = vec3(0.0); + visibility = 0.0; + + /* Only trace in 2 directions. May lead to a darker result but since it's mostly for + * alpha blended objects that will have overdraw, we limit the performance impact. */ + vec2 horizons = search_horizon_sweep(dir, position, uvs, noise.y, max_dir); + integrate_slice(normal, dir, horizons, visibility, bent_normal); + + bent_normal = normalize(bent_normal); +} + +/* Multibounce approximation base on surface albedo. + * Page 78 in the .pdf version. */ +float gtao_multibounce(float visibility, vec3 albedo) +{ + if (aoBounceFac == 0.0) return visibility; + + /* Median luminance. Because Colored multibounce looks bad. */ + float lum = dot(albedo, vec3(0.3333)); + + float a = 2.0404 * lum - 0.3324; + float b = -4.7951 * lum + 0.6417; + float c = 2.7552 * lum + 0.6903; + + float x = visibility; + return max(x, ((x * a + b) * x + c) * x); +} + +/* Use the right occlusion */ +float occlusion_compute(vec3 N, vec3 vpos, float user_occlusion, vec4 rand, out vec3 bent_normal) +{ +#ifndef USE_REFRACTION + if ((int(aoSettings) & USE_AO) != 0) { + float visibility; + vec3 vnor = mat3(ViewMatrix) * N; + +#ifdef ENABLE_DEFERED_AO + gtao_deferred(vnor, rand, gl_FragCoord.z, visibility, bent_normal); +#else + gtao(vnor, vpos, rand, visibility, bent_normal); +#endif + + /* Prevent some problems down the road. */ + visibility = max(1e-3, visibility); + + if ((int(aoSettings) & USE_BENT_NORMAL) != 0) { + /* The bent normal will show the facet look of the mesh. Try to minimize this. */ + float mix_fac = visibility * visibility; + bent_normal = normalize(mix(bent_normal, vnor, mix_fac)); + + bent_normal = transform_direction(ViewMatrixInverse, bent_normal); + } + else { + bent_normal = N; + } + + /* Scale by user factor */ + visibility = pow(visibility, aoFactor); + + return min(visibility, user_occlusion); + } +#endif + + bent_normal = N; + return user_occlusion; +} diff --git a/source/blender/draw/engines/eevee/shaders/background_vert.glsl b/source/blender/draw/engines/eevee/shaders/background_vert.glsl new file mode 100644 index 00000000000..380d6d96491 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/background_vert.glsl @@ -0,0 +1,27 @@ + +in vec2 pos; + +out vec3 viewPosition; + +#ifndef VOLUMETRICS +/* necessary for compilation*/ +out vec3 worldPosition; +out vec3 worldNormal; +out vec3 viewNormal; +#endif + +void main() +{ + gl_Position = vec4(pos, 1.0, 1.0); + viewPosition = vec3(pos, -1.0); + +#ifndef VOLUMETRICS + /* Not used in practice but needed to avoid compilation errors. */ + worldPosition = viewPosition; + worldNormal = viewNormal = normalize(-viewPosition); +#endif + +#ifdef ATTRIB + pass_attrib(viewPosition); +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl new file mode 100644 index 00000000000..a54cefc5b85 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl @@ -0,0 +1,862 @@ + +#define M_PI 3.14159265358979323846 /* pi */ +#define M_2PI 6.28318530717958647692 /* 2*pi */ +#define M_PI_2 1.57079632679489661923 /* pi/2 */ +#define M_1_PI 0.318309886183790671538 /* 1/pi */ +#define M_1_2PI 0.159154943091895335768 /* 1/(2*pi) */ +#define M_1_PI2 0.101321183642337771443 /* 1/(pi^2) */ + +#define LUT_SIZE 64 + +/* Buffers */ +uniform sampler2D colorBuffer; +uniform sampler2D depthBuffer; +uniform sampler2D maxzBuffer; +uniform sampler2D minzBuffer; +uniform sampler2DArray planarDepth; + +#define cameraForward normalize(ViewMatrixInverse[2].xyz) +#define cameraPos ViewMatrixInverse[3].xyz +#define cameraVec ((ProjectionMatrix[3][3] == 0.0) ? normalize(cameraPos - worldPosition) : cameraForward) +#define viewCameraVec ((ProjectionMatrix[3][3] == 0.0) ? normalize(-viewPosition) : vec3(0.0, 0.0, 1.0)) + +/* ------- Structures -------- */ + +/* ------ Lights ----- */ +struct LightData { + vec4 position_influence; /* w : InfluenceRadius (inversed and squared) */ + vec4 color_spec; /* w : Spec Intensity */ + vec4 spotdata_radius_shadow; /* x : spot size, y : spot blend, z : radius, w: shadow id */ + vec4 rightvec_sizex; /* xyz: Normalized up vector, w: area size X or spot scale X */ + vec4 upvec_sizey; /* xyz: Normalized right vector, w: area size Y or spot scale Y */ + vec4 forwardvec_type; /* xyz: Normalized forward vector, w: Lamp Type */ +}; + +/* convenience aliases */ +#define l_color color_spec.rgb +#define l_spec color_spec.a +#define l_position position_influence.xyz +#define l_influence position_influence.w +#define l_sizex rightvec_sizex.w +#define l_sizey upvec_sizey.w +#define l_right rightvec_sizex.xyz +#define l_up upvec_sizey.xyz +#define l_forward forwardvec_type.xyz +#define l_type forwardvec_type.w +#define l_spot_size spotdata_radius_shadow.x +#define l_spot_blend spotdata_radius_shadow.y +#define l_radius spotdata_radius_shadow.z +#define l_shadowid spotdata_radius_shadow.w + +/* ------ Shadows ----- */ +#ifndef MAX_CASCADE_NUM +#define MAX_CASCADE_NUM 4 +#endif + +struct ShadowData { + vec4 near_far_bias_exp; + vec4 shadow_data_start_end; + vec4 contact_shadow_data; +}; + +struct ShadowCubeData { + vec4 position; +}; + +struct ShadowCascadeData { + mat4 shadowmat[MAX_CASCADE_NUM]; + vec4 split_start_distances; + vec4 split_end_distances; +}; + +/* convenience aliases */ +#define sh_near near_far_bias_exp.x +#define sh_far near_far_bias_exp.y +#define sh_bias near_far_bias_exp.z +#define sh_exp near_far_bias_exp.w +#define sh_bleed near_far_bias_exp.w +#define sh_tex_start shadow_data_start_end.x +#define sh_data_start shadow_data_start_end.y +#define sh_multi_nbr shadow_data_start_end.z +#define sh_blur shadow_data_start_end.w +#define sh_contact_dist contact_shadow_data.x +#define sh_contact_offset contact_shadow_data.y +#define sh_contact_spread contact_shadow_data.z +#define sh_contact_thickness contact_shadow_data.w + +/* ------- Convenience functions --------- */ + +vec3 mul(mat3 m, vec3 v) { return m * v; } +mat3 mul(mat3 m1, mat3 m2) { return m1 * m2; } +vec3 transform_direction(mat4 m, vec3 v) { return mat3(m) * v; } +vec3 transform_point(mat4 m, vec3 v) { return (m * vec4(v, 1.0)).xyz; } +vec3 project_point(mat4 m, vec3 v) { + vec4 tmp = m * vec4(v, 1.0); + return tmp.xyz / tmp.w; +} + +#define min3(a, b, c) min(a, min(b, c)) +#define min4(a, b, c, d) min(a, min3(b, c, d)) +#define min5(a, b, c, d, e) min(a, min4(b, c, d, e)) +#define min6(a, b, c, d, e, f) min(a, min5(b, c, d, e, f)) +#define min7(a, b, c, d, e, f, g) min(a, min6(b, c, d, e, f, g)) +#define min8(a, b, c, d, e, f, g, h) min(a, min7(b, c, d, e, f, g, h)) +#define min9(a, b, c, d, e, f, g, h, i) min(a, min8(b, c, d, e, f, g, h, i)) + +#define max3(a, b, c) max(a, max(b, c)) +#define max4(a, b, c, d) max(a, max3(b, c, d)) +#define max5(a, b, c, d, e) max(a, max4(b, c, d, e)) +#define max6(a, b, c, d, e, f) max(a, max5(b, c, d, e, f)) +#define max7(a, b, c, d, e, f, g) max(a, max6(b, c, d, e, f, g)) +#define max8(a, b, c, d, e, f, g, h) max(a, max7(b, c, d, e, f, g, h)) +#define max9(a, b, c, d, e, f, g, h, i) max(a, max8(b, c, d, e, f, g, h, i)) + +#define avg3(a, b, c) (a + b + c) * (1.0 / 3.0) +#define avg4(a, b, c, d) (a + b + c + d) * (1.0 / 4.0) +#define avg5(a, b, c, d, e) (a + b + c + d + e) * (1.0 / 5.0) +#define avg6(a, b, c, d, e, f) (a + b + c + d + e + f) * (1.0 / 6.0) +#define avg7(a, b, c, d, e, f, g) (a + b + c + d + e + f + g) * (1.0 / 7.0) +#define avg8(a, b, c, d, e, f, g, h) (a + b + c + d + e + f + g + h) * (1.0 / 8.0) +#define avg9(a, b, c, d, e, f, g, h, i) (a + b + c + d + e + f + g + h + i) * (1.0 / 9.0) + +float min_v2(vec2 v) { return min(v.x, v.y); } +float min_v3(vec3 v) { return min(v.x, min(v.y, v.z)); } +float max_v2(vec2 v) { return max(v.x, v.y); } +float max_v3(vec3 v) { return max(v.x, max(v.y, v.z)); } + +float sum(vec2 v) { return dot(vec2(1.0), v); } +float sum(vec3 v) { return dot(vec3(1.0), v); } +float sum(vec4 v) { return dot(vec4(1.0), v); } + +float saturate(float a) { return clamp(a, 0.0, 1.0); } +vec2 saturate(vec2 a) { return clamp(a, 0.0, 1.0); } +vec3 saturate(vec3 a) { return clamp(a, 0.0, 1.0); } +vec4 saturate(vec4 a) { return clamp(a, 0.0, 1.0); } + +float distance_squared(vec2 a, vec2 b) { a -= b; return dot(a, a); } +float distance_squared(vec3 a, vec3 b) { a -= b; return dot(a, a); } +float len_squared(vec3 a) { return dot(a, a); } + +float inverse_distance(vec3 V) { return max( 1 / length(V), 1e-8); } + +vec2 mip_ratio_interp(float mip) { + float low_mip = floor(mip); + return mix(mipRatio[int(low_mip)], mipRatio[int(low_mip + 1.0)], mip - low_mip); +} + +/* ------- RNG ------- */ + +float wang_hash_noise(uint s) +{ + s = (s ^ 61u) ^ (s >> 16u); + s *= 9u; + s = s ^ (s >> 4u); + s *= 0x27d4eb2du; + s = s ^ (s >> 15u); + + return fract(float(s) / 4294967296.0); +} + +/* ------- Fast Math ------- */ + +/* [Drobot2014a] Low Level Optimizations for GCN */ +float fast_sqrt(float v) +{ + return intBitsToFloat(0x1fbd1df5 + (floatBitsToInt(v) >> 1)); +} + +vec2 fast_sqrt(vec2 v) +{ + return intBitsToFloat(0x1fbd1df5 + (floatBitsToInt(v) >> 1)); +} + +/* [Eberly2014] GPGPU Programming for Games and Science */ +float fast_acos(float v) +{ + float res = -0.156583 * abs(v) + M_PI_2; + res *= fast_sqrt(1.0 - abs(v)); + return (v >= 0) ? res : M_PI - res; +} + +vec2 fast_acos(vec2 v) +{ + vec2 res = -0.156583 * abs(v) + M_PI_2; + res *= fast_sqrt(1.0 - abs(v)); + v.x = (v.x >= 0) ? res.x : M_PI - res.x; + v.y = (v.y >= 0) ? res.y : M_PI - res.y; + return v; +} + +float point_plane_projection_dist(vec3 lineorigin, vec3 planeorigin, vec3 planenormal) +{ + return dot(planenormal, planeorigin - lineorigin); +} + +float line_plane_intersect_dist(vec3 lineorigin, vec3 linedirection, vec3 planeorigin, vec3 planenormal) +{ + return dot(planenormal, planeorigin - lineorigin) / dot(planenormal, linedirection); +} + +float line_plane_intersect_dist(vec3 lineorigin, vec3 linedirection, vec4 plane) +{ + vec3 plane_co = plane.xyz * (-plane.w / len_squared(plane.xyz)); + vec3 h = lineorigin - plane_co; + return -dot(plane.xyz, h) / dot(plane.xyz, linedirection); +} + +vec3 line_plane_intersect(vec3 lineorigin, vec3 linedirection, vec3 planeorigin, vec3 planenormal) +{ + float dist = line_plane_intersect_dist(lineorigin, linedirection, planeorigin, planenormal); + return lineorigin + linedirection * dist; +} + +vec3 line_plane_intersect(vec3 lineorigin, vec3 linedirection, vec4 plane) +{ + float dist = line_plane_intersect_dist(lineorigin, linedirection, plane); + return lineorigin + linedirection * dist; +} + +float line_aligned_plane_intersect_dist(vec3 lineorigin, vec3 linedirection, vec3 planeorigin) +{ + /* aligned plane normal */ + vec3 L = planeorigin - lineorigin; + float diskdist = length(L); + vec3 planenormal = -normalize(L); + return -diskdist / dot(planenormal, linedirection); +} + +vec3 line_aligned_plane_intersect(vec3 lineorigin, vec3 linedirection, vec3 planeorigin) +{ + float dist = line_aligned_plane_intersect_dist(lineorigin, linedirection, planeorigin); + if (dist < 0) { + /* if intersection is behind we fake the intersection to be + * really far and (hopefully) not inside the radius of interest */ + dist = 1e16; + } + return lineorigin + linedirection * dist; +} + +float line_unit_sphere_intersect_dist(vec3 lineorigin, vec3 linedirection) +{ + float a = dot(linedirection, linedirection); + float b = dot(linedirection, lineorigin); + float c = dot(lineorigin, lineorigin) - 1; + + float dist = 1e15; + float determinant = b * b - a * c; + if (determinant >= 0) + dist = (sqrt(determinant) - b) / a; + + return dist; +} + +float line_unit_box_intersect_dist(vec3 lineorigin, vec3 linedirection) +{ + /* https://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/ */ + vec3 firstplane = (vec3( 1.0) - lineorigin) / linedirection; + vec3 secondplane = (vec3(-1.0) - lineorigin) / linedirection; + vec3 furthestplane = max(firstplane, secondplane); + + return min_v3(furthestplane); +} + + +/* Return texture coordinates to sample Surface LUT */ +vec2 lut_coords(float cosTheta, float roughness) +{ + float theta = acos(cosTheta); + vec2 coords = vec2(roughness, theta / M_PI_2); + + /* scale and bias coordinates, for correct filtered lookup */ + return coords * (LUT_SIZE - 1.0) / LUT_SIZE + 0.5 / LUT_SIZE; +} + +/* -- Tangent Space conversion -- */ +vec3 tangent_to_world(vec3 vector, vec3 N, vec3 T, vec3 B) +{ + return T * vector.x + B * vector.y + N * vector.z; +} + +vec3 world_to_tangent(vec3 vector, vec3 N, vec3 T, vec3 B) +{ + return vec3( dot(T, vector), dot(B, vector), dot(N, vector)); +} + +void make_orthonormal_basis(vec3 N, out vec3 T, out vec3 B) +{ + vec3 UpVector = abs(N.z) < 0.99999 ? vec3(0.0,0.0,1.0) : vec3(1.0,0.0,0.0); + T = normalize( cross(UpVector, N) ); + B = cross(N, T); +} + +/* ---- Opengl Depth conversion ---- */ + +float linear_depth(bool is_persp, float z, float zf, float zn) +{ + if (is_persp) { + return (zn * zf) / (z * (zn - zf) + zf); + } + else { + return (z * 2.0 - 1.0) * zf; + } +} + +float buffer_depth(bool is_persp, float z, float zf, float zn) +{ + if (is_persp) { + return (zf * (zn - z)) / (z * (zn - zf)); + } + else { + return (z / (zf * 2.0)) + 0.5; + } +} + +float get_view_z_from_depth(float depth) +{ + if (ProjectionMatrix[3][3] == 0.0) { + float d = 2.0 * depth - 1.0; + return -ProjectionMatrix[3][2] / (d + ProjectionMatrix[2][2]); + } + else { + return viewVecs[0].z + depth * viewVecs[1].z; + } +} + +float get_depth_from_view_z(float z) +{ + if (ProjectionMatrix[3][3] == 0.0) { + float d = (-ProjectionMatrix[3][2] / z) - ProjectionMatrix[2][2]; + return d * 0.5 + 0.5; + } + else { + return (z - viewVecs[0].z) / viewVecs[1].z; + } +} + +vec2 get_uvs_from_view(vec3 view) +{ + vec3 ndc = project_point(ProjectionMatrix, view); + return ndc.xy * 0.5 + 0.5; +} + +vec3 get_view_space_from_depth(vec2 uvcoords, float depth) +{ + if (ProjectionMatrix[3][3] == 0.0) { + return vec3(viewVecs[0].xy + uvcoords * viewVecs[1].xy, 1.0) * get_view_z_from_depth(depth); + } + else { + return viewVecs[0].xyz + vec3(uvcoords, depth) * viewVecs[1].xyz; + } +} + +vec3 get_world_space_from_depth(vec2 uvcoords, float depth) +{ + return (ViewMatrixInverse * vec4(get_view_space_from_depth(uvcoords, depth), 1.0)).xyz; +} + +vec3 get_specular_reflection_dominant_dir(vec3 N, vec3 V, float roughness) +{ + vec3 R = -reflect(V, N); + float smoothness = 1.0 - roughness; + float fac = smoothness * (sqrt(smoothness) + roughness); + return normalize(mix(N, R, fac)); +} + +float specular_occlusion(float NV, float AO, float roughness) +{ + return saturate(pow(NV + AO, roughness) - 1.0 + AO); +} + +/* --- Refraction utils --- */ + +float ior_from_f0(float f0) +{ + float f = sqrt(f0); + return (-f - 1.0) / (f - 1.0); +} + +float f0_from_ior(float eta) +{ + float A = (eta - 1.0) / (eta + 1.0); + return A * A; +} + +vec3 get_specular_refraction_dominant_dir(vec3 N, vec3 V, float roughness, float ior) +{ + /* TODO: This a bad approximation. Better approximation should fit + * the refracted vector and roughness into the best prefiltered reflection + * lobe. */ + /* Correct the IOR for ior < 1.0 to not see the abrupt delimitation or the TIR */ + ior = (ior < 1.0) ? mix(ior, 1.0, roughness) : ior; + float eta = 1.0 / ior; + + float NV = dot(N, -V); + + /* Custom Refraction. */ + float k = 1.0 - eta * eta * (1.0 - NV * NV); + k = max(0.0, k); /* Only this changes. */ + vec3 R = eta * -V - (eta * NV + sqrt(k)) * N; + + return R; +} + +float get_btdf_lut(sampler2DArray btdf_lut_tex, float NV, float roughness, float ior) +{ + const vec3 lut_scale_bias_texel_size = vec3((LUT_SIZE - 1.0), 0.5, 1.5) / LUT_SIZE; + + vec3 coords; + /* Try to compensate for the low resolution and interpolation error. */ + coords.x = (ior > 1.0) + ? (0.9 + lut_scale_bias_texel_size.z) + (0.1 - lut_scale_bias_texel_size.z) * f0_from_ior(ior) + : (0.9 + lut_scale_bias_texel_size.z) * ior * ior; + coords.y = 1.0 - saturate(NV); + coords.xy *= lut_scale_bias_texel_size.x; + coords.xy += lut_scale_bias_texel_size.y; + + const float lut_lvl_ofs = 4.0; /* First texture lvl of roughness. */ + const float lut_lvl_scale = 16.0; /* How many lvl of roughness in the lut. */ + + float mip = roughness * lut_lvl_scale; + float mip_floor = floor(mip); + + coords.z = lut_lvl_ofs + mip_floor + 1.0; + float btdf_high = textureLod(btdf_lut_tex, coords, 0.0).r; + + coords.z -= 1.0; + float btdf_low = textureLod(btdf_lut_tex, coords, 0.0).r; + + float btdf = (ior == 1.0) ? 1.0 : mix(btdf_low, btdf_high, mip - coords.z); + + return btdf; +} + +/* ---- Encode / Decode Normal buffer data ---- */ +/* From http://aras-p.info/texts/CompactNormalStorage.html + * Using Method #4: Spheremap Transform */ +vec2 normal_encode(vec3 n, vec3 view) +{ + float p = sqrt(n.z * 8.0 + 8.0); + return n.xy / p + 0.5; +} + +vec3 normal_decode(vec2 enc, vec3 view) +{ + vec2 fenc = enc * 4.0 - 2.0; + float f = dot(fenc, fenc); + float g = sqrt(1.0 - f / 4.0); + vec3 n; + n.xy = fenc*g; + n.z = 1 - f / 2; + return n; +} + +/* ---- RGBM (shared multiplier) encoding ---- */ +/* From http://iwasbeingirony.blogspot.fr/2010/06/difference-between-rgbm-and-rgbd.html */ + +/* Higher RGBM_MAX_RANGE gives imprecision issues in low intensity. */ +#define RGBM_MAX_RANGE 512.0 + +vec4 rgbm_encode(vec3 rgb) +{ + float maxRGB = max_v3(rgb); + float M = maxRGB / RGBM_MAX_RANGE; + M = ceil(M * 255.0) / 255.0; + return vec4(rgb / (M * RGBM_MAX_RANGE), M); +} + +vec3 rgbm_decode(vec4 data) +{ + return data.rgb * (data.a * RGBM_MAX_RANGE); +} + +/* ---- RGBE (shared exponent) encoding ---- */ +vec4 rgbe_encode(vec3 rgb) +{ + float maxRGB = max_v3(rgb); + float fexp = ceil(log2(maxRGB)); + return vec4(rgb / exp2(fexp), (fexp + 128.0) / 255.0); +} + +vec3 rgbe_decode(vec4 data) +{ + float fexp = data.a * 255.0 - 128.0; + return data.rgb * exp2(fexp); +} + +#if 1 +#define irradiance_encode rgbe_encode +#define irradiance_decode rgbe_decode +#else /* No ecoding (when using floating point format) */ +#define irradiance_encode(X) (X).rgbb +#define irradiance_decode(X) (X).rgb +#endif + +/* Irradiance Visibility Encoding */ +#if 1 +vec4 visibility_encode(vec2 accum, float range) +{ + accum /= range; + + vec4 data; + data.x = fract(accum.x); + data.y = floor(accum.x) / 255.0; + data.z = fract(accum.y); + data.w = floor(accum.y) / 255.0; + + return data; +} + +vec2 visibility_decode(vec4 data, float range) +{ + return (data.xz + data.yw * 255.0) * range; +} +#else /* No ecoding (when using floating point format) */ +vec4 visibility_encode(vec2 accum, float range) +{ + return accum.xyxy; +} + +vec2 visibility_decode(vec4 data, float range) +{ + return data.xy; +} +#endif + +/* Fresnel monochromatic, perfect mirror */ +float F_eta(float eta, float cos_theta) +{ + /* compute fresnel reflectance without explicitly computing + * the refracted direction */ + float c = abs(cos_theta); + float g = eta * eta - 1.0 + c * c; + float result; + + if (g > 0.0) { + g = sqrt(g); + vec2 g_c = vec2(g) + vec2(c, -c); + float A = g_c.y / g_c.x; + A *= A; + g_c *= c; + float B = (g_c.y - 1.0) / (g_c.x + 1.0); + B *= B; + result = 0.5 * A * (1.0 + B); + } + else { + result = 1.0; /* TIR (no refracted component) */ + } + + return result; +} + +/* Fresnel color blend base on fresnel factor */ +vec3 F_color_blend(float eta, float fresnel, vec3 f0_color) +{ + float f0 = F_eta(eta, 1.0); + float fac = saturate((fresnel - f0) / max(1e-8, 1.0 - f0)); + return mix(f0_color, vec3(1.0), fac); +} + +/* Fresnel */ +vec3 F_schlick(vec3 f0, float cos_theta) +{ + float fac = 1.0 - cos_theta; + float fac2 = fac * fac; + fac = fac2 * fac2 * fac; + + /* Unreal specular matching : if specular color is below 2% intensity, + * (using green channel for intensity) treat as shadowning */ + return saturate(50.0 * dot(f0, vec3(0.3, 0.6, 0.1))) * fac + (1.0 - fac) * f0; +} + +/* Fresnel approximation for LTC area lights (not MRP) */ +vec3 F_area(vec3 f0, vec2 lut) +{ + vec2 fac = normalize(lut.xy); /* XXX FIXME this does not work!!! */ + + /* Unreal specular matching : if specular color is below 2% intensity, + * treat as shadowning */ + return saturate(50.0 * dot(f0, vec3(0.3, 0.6, 0.1))) * fac.y + fac.x * f0; +} + +/* Fresnel approximation for IBL */ +vec3 F_ibl(vec3 f0, vec2 lut) +{ + /* Unreal specular matching : if specular color is below 2% intensity, + * treat as shadowning */ + return saturate(50.0 * dot(f0, vec3(0.3, 0.6, 0.1))) * lut.y + lut.x * f0; +} + +/* GGX */ +float D_ggx_opti(float NH, float a2) +{ + float tmp = (NH * a2 - NH) * NH + 1.0; + return M_PI * tmp*tmp; /* Doing RCP and mul a2 at the end */ +} + +float G1_Smith_GGX(float NX, float a2) +{ + /* Using Brian Karis approach and refactoring by NX/NX + * this way the (2*NL)*(2*NV) in G = G1(V) * G1(L) gets canceled by the brdf denominator 4*NL*NV + * Rcp is done on the whole G later + * Note that this is not convenient for the transmission formula */ + return NX + sqrt(NX * (NX - NX * a2) + a2); + /* return 2 / (1 + sqrt(1 + a2 * (1 - NX*NX) / (NX*NX) ) ); /* Reference function */ +} + +float bsdf_ggx(vec3 N, vec3 L, vec3 V, float roughness) +{ + float a = roughness; + float a2 = a * a; + + vec3 H = normalize(L + V); + float NH = max(dot(N, H), 1e-8); + float NL = max(dot(N, L), 1e-8); + float NV = max(dot(N, V), 1e-8); + + float G = G1_Smith_GGX(NV, a2) * G1_Smith_GGX(NL, a2); /* Doing RCP at the end */ + float D = D_ggx_opti(NH, a2); + + /* Denominator is canceled by G1_Smith */ + /* bsdf = D * G / (4.0 * NL * NV); /* Reference function */ + return NL * a2 / (D * G); /* NL to Fit cycles Equation : line. 345 in bsdf_microfacet.h */ +} + +void accumulate_light(vec3 light, float fac, inout vec4 accum) +{ + accum += vec4(light, 1.0) * min(fac, (1.0 - accum.a)); +} + +/* ----------- Cone Aperture Approximation --------- */ + +/* Return a fitted cone angle given the input roughness */ +float cone_cosine(float r) +{ + /* Using phong gloss + * roughness = sqrt(2/(gloss+2)) */ + float gloss = -2 + 2 / (r * r); + /* Drobot 2014 in GPUPro5 */ + // return cos(2.0 * sqrt(2.0 / (gloss + 2))); + /* Uludag 2014 in GPUPro5 */ + // return pow(0.244, 1 / (gloss + 1)); + /* Jimenez 2016 in Practical Realtime Strategies for Accurate Indirect Occlusion*/ + return exp2(-3.32193 * r * r); +} + +/* --------- Closure ---------- */ +#ifdef VOLUMETRICS + +struct Closure { + vec3 absorption; + vec3 scatter; + vec3 emission; + float anisotropy; +}; + +#define CLOSURE_DEFAULT Closure(vec3(0.0), vec3(0.0), vec3(0.0), 0.0) + +Closure closure_mix(Closure cl1, Closure cl2, float fac) +{ + Closure cl; + cl.absorption = mix(cl1.absorption, cl2.absorption, fac); + cl.scatter = mix(cl1.scatter, cl2.scatter, fac); + cl.emission = mix(cl1.emission, cl2.emission, fac); + cl.anisotropy = mix(cl1.anisotropy, cl2.anisotropy, fac); + return cl; +} + +Closure closure_add(Closure cl1, Closure cl2) +{ + Closure cl; + cl.absorption = cl1.absorption + cl2.absorption; + cl.scatter = cl1.scatter + cl2.scatter; + cl.emission = cl1.emission + cl2.emission; + cl.anisotropy = (cl1.anisotropy + cl2.anisotropy) / 2.0; /* Average phase (no multi lobe) */ + return cl; +} + +Closure closure_emission(vec3 rgb) +{ + Closure cl = CLOSURE_DEFAULT; + cl.emission = rgb; + return cl; +} + +#else /* VOLUMETRICS */ + +struct Closure { + vec3 radiance; + float opacity; +# ifdef USE_SSS + vec4 sss_data; +# ifdef USE_SSS_ALBEDO + vec3 sss_albedo; +# endif +# endif + vec4 ssr_data; + vec2 ssr_normal; + int ssr_id; +}; + +/* This is hacking ssr_id to tag transparent bsdf */ +#define TRANSPARENT_CLOSURE_FLAG -2 +#define REFRACT_CLOSURE_FLAG -3 +#define NO_SSR -999 + +# ifdef USE_SSS +# ifdef USE_SSS_ALBEDO +#define CLOSURE_DEFAULT Closure(vec3(0.0), 1.0, vec4(0.0), vec3(0.0), vec4(0.0), vec2(0.0), -1) +# else +#define CLOSURE_DEFAULT Closure(vec3(0.0), 1.0, vec4(0.0), vec4(0.0), vec2(0.0), -1) +# endif +# else +#define CLOSURE_DEFAULT Closure(vec3(0.0), 1.0, vec4(0.0), vec2(0.0), -1) +# endif + +uniform int outputSsrId; + +Closure closure_mix(Closure cl1, Closure cl2, float fac) +{ + Closure cl; + + if (cl1.ssr_id == TRANSPARENT_CLOSURE_FLAG) { + cl1.ssr_normal = cl2.ssr_normal; + cl1.ssr_data = cl2.ssr_data; + cl1.ssr_id = cl2.ssr_id; +# ifdef USE_SSS + cl1.sss_data = cl2.sss_data; +# ifdef USE_SSS_ALBEDO + cl1.sss_albedo = cl2.sss_albedo; +# endif +# endif + } + if (cl2.ssr_id == TRANSPARENT_CLOSURE_FLAG) { + cl2.ssr_normal = cl1.ssr_normal; + cl2.ssr_data = cl1.ssr_data; + cl2.ssr_id = cl1.ssr_id; +# ifdef USE_SSS + cl2.sss_data = cl1.sss_data; +# ifdef USE_SSS_ALBEDO + cl2.sss_albedo = cl1.sss_albedo; +# endif +# endif + } + if (cl1.ssr_id == outputSsrId) { + cl.ssr_data = mix(cl1.ssr_data.xyzw, vec4(vec3(0.0), cl1.ssr_data.w), fac); /* do not blend roughness */ + cl.ssr_normal = cl1.ssr_normal; + cl.ssr_id = cl1.ssr_id; + } + else { + cl.ssr_data = mix(vec4(vec3(0.0), cl2.ssr_data.w), cl2.ssr_data.xyzw, fac); /* do not blend roughness */ + cl.ssr_normal = cl2.ssr_normal; + cl.ssr_id = cl2.ssr_id; + } + cl.opacity = mix(cl1.opacity, cl2.opacity, fac); + cl.radiance = mix(cl1.radiance * cl1.opacity, cl2.radiance * cl2.opacity, fac); + cl.radiance /= max(1e-8, cl.opacity); + +# ifdef USE_SSS + cl.sss_data.rgb = mix(cl1.sss_data.rgb, cl2.sss_data.rgb, fac); + cl.sss_data.a = (cl1.sss_data.a > 0.0) ? cl1.sss_data.a : cl2.sss_data.a; +# ifdef USE_SSS_ALBEDO + /* TODO Find a solution to this. Dither? */ + cl.sss_albedo = (cl1.sss_data.a > 0.0) ? cl1.sss_albedo : cl2.sss_albedo; +# endif +# endif + + return cl; +} + +Closure closure_add(Closure cl1, Closure cl2) +{ + Closure cl = (cl1.ssr_id == outputSsrId) ? cl1 : cl2; +# ifdef USE_SSS + cl.sss_data = (cl1.sss_data.a > 0.0) ? cl1.sss_data : cl2.sss_data; +# ifdef USE_SSS_ALBEDO + /* TODO Find a solution to this. Dither? */ + cl.sss_albedo = (cl1.sss_data.a > 0.0) ? cl1.sss_albedo : cl2.sss_albedo; +# endif +# endif + cl.radiance = cl1.radiance + cl2.radiance; + cl.opacity = saturate(cl1.opacity + cl2.opacity); + return cl; +} + +Closure closure_emission(vec3 rgb) +{ + Closure cl = CLOSURE_DEFAULT; + cl.radiance = rgb; + return cl; +} + +# if defined(MESH_SHADER) && !defined(USE_ALPHA_HASH) && !defined(USE_ALPHA_CLIP) && !defined(SHADOW_SHADER) && !defined(USE_MULTIPLY) +layout(location = 0) out vec4 fragColor; +layout(location = 1) out vec4 ssrNormals; +layout(location = 2) out vec4 ssrData; +# ifdef USE_SSS +layout(location = 3) out vec4 sssData; +# ifdef USE_SSS_ALBEDO +layout(location = 4) out vec4 sssAlbedo; +# endif /* USE_SSS_ALBEDO */ +# endif /* USE_SSS */ + +Closure nodetree_exec(void); /* Prototype */ + +# if defined(USE_ALPHA_BLEND_VOLUMETRICS) +/* Prototype because this file is included before volumetric_lib.glsl */ +vec4 volumetric_resolve(vec4 scene_color, vec2 frag_uvs, float frag_depth); +# endif + +#define NODETREE_EXEC +void main() +{ + Closure cl = nodetree_exec(); +# ifndef USE_ALPHA_BLEND + /* Prevent alpha hash material writing into alpha channel. */ + cl.opacity = 1.0; +# endif + +# if defined(USE_ALPHA_BLEND_VOLUMETRICS) + /* XXX fragile, better use real viewport resolution */ + vec2 uvs = gl_FragCoord.xy / vec2(2 * textureSize(maxzBuffer, 0).xy); + fragColor = volumetric_resolve(vec4(cl.radiance, cl.opacity), uvs, gl_FragCoord.z); +# else + fragColor = vec4(cl.radiance, cl.opacity); +# endif + + ssrNormals = cl.ssr_normal.xyyy; + ssrData = cl.ssr_data; +# ifdef USE_SSS + sssData = cl.sss_data; +# ifdef USE_SSS_ALBEDO + sssAlbedo = cl.sss_albedo.rgbb; +# endif +# endif + + /* For Probe capture */ +# ifdef USE_SSS +# ifdef USE_SSS_ALBEDO + fragColor.rgb += cl.sss_data.rgb * cl.sss_albedo.rgb * float(!sssToggle); +# else + fragColor.rgb += cl.sss_data.rgb * float(!sssToggle); +# endif +# endif +} + +# endif /* MESH_SHADER && !SHADOW_SHADER */ + +#endif /* VOLUMETRICS */ + +Closure nodetree_exec(void); /* Prototype */ + +/* TODO find a better place */ +#ifdef USE_MULTIPLY + +out vec4 fragColor; + +#define NODETREE_EXEC +void main() +{ + Closure cl = nodetree_exec(); + fragColor = vec4(mix(vec3(1.0), cl.radiance, cl.opacity), 1.0); +} +#endif diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl new file mode 100644 index 00000000000..7fb4ee51a96 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/bsdf_lut_frag.glsl @@ -0,0 +1,46 @@ + +out vec4 FragColor; + +void main() { + vec3 N, T, B, V; + + float NV = ( 1.0 - (clamp(gl_FragCoord.y / BRDF_LUT_SIZE, 1e-4, 0.9999))); + float sqrtRoughness = clamp(gl_FragCoord.x / BRDF_LUT_SIZE, 1e-4, 0.9999); + float a = sqrtRoughness * sqrtRoughness; + float a2 = a * a; + + N = vec3(0.0, 0.0, 1.0); + T = vec3(1.0, 0.0, 0.0); + B = vec3(0.0, 1.0, 0.0); + V = vec3(sqrt(1.0 - NV * NV), 0.0, NV); + + setup_noise(); + + /* Integrating BRDF */ + float brdf_accum = 0.0; + float fresnel_accum = 0.0; + for (float i = 0; i < sampleCount; i++) { + vec3 H = sample_ggx(i, a2, N, T, B); /* Microfacet normal */ + vec3 L = -reflect(V, H); + float NL = L.z; + + if (NL > 0.0) { + float NH = max(H.z, 0.0); + float VH = max(dot(V, H), 0.0); + + float G1_v = G1_Smith_GGX(NV, a2); + float G1_l = G1_Smith_GGX(NL, a2); + float G_smith = 4.0 * NV * NL / (G1_v * G1_l); /* See G1_Smith_GGX for explanations. */ + + float brdf = (G_smith * VH) / (NH * NV); + float Fc = pow(1.0 - VH, 5.0); + + brdf_accum += (1.0 - Fc) * brdf; + fresnel_accum += Fc * brdf; + } + } + brdf_accum /= sampleCount; + fresnel_accum /= sampleCount; + + FragColor = vec4(brdf_accum, fresnel_accum, 0.0, 1.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_sampling_lib.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_sampling_lib.glsl new file mode 100644 index 00000000000..cce9d59dc12 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/bsdf_sampling_lib.glsl @@ -0,0 +1,107 @@ + +uniform sampler1D texHammersley; +uniform sampler2D texJitter; +uniform float sampleCount; +uniform float invSampleCount; + +vec2 jitternoise = vec2(0.0); + +#ifndef UTIL_TEX +#define UTIL_TEX +uniform sampler2DArray utilTex; +#define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) +#endif /* UTIL_TEX */ + +void setup_noise(void) +{ + jitternoise = texelfetch_noise_tex(gl_FragCoord.xy).rg; /* Global variable */ +} + +#ifdef HAMMERSLEY_SIZE +vec3 hammersley_3d(float i, float invsamplenbr) +{ + vec3 Xi; /* Theta, cos(Phi), sin(Phi) */ + + Xi.x = i * invsamplenbr; /* i/samples */ + Xi.x = fract(Xi.x + jitternoise.x); + + int u = int(mod(i + jitternoise.y * HAMMERSLEY_SIZE, HAMMERSLEY_SIZE)); + + Xi.yz = texelFetch(texHammersley, u, 0).rg; + + return Xi; +} + +vec3 hammersley_3d(float i) +{ + return hammersley_3d(i, invSampleCount); +} +#endif + +/* -------------- BSDFS -------------- */ + +float pdf_ggx_reflect(float NH, float a2) +{ + return NH * a2 / D_ggx_opti(NH, a2); +} + +float pdf_hemisphere() +{ + return 0.5 * M_1_PI; +} + +vec3 sample_ggx(vec3 rand, float a2) +{ + /* Theta is the aperture angle of the cone */ + float z = sqrt( (1.0 - rand.x) / ( 1.0 + a2 * rand.x - rand.x ) ); /* cos theta */ + float r = sqrt(max(0.0, 1.0f - z*z)); /* sin theta */ + float x = r * rand.y; + float y = r * rand.z; + + /* Microfacet Normal */ + return vec3(x, y, z); +} + +vec3 sample_ggx(vec3 rand, float a2, vec3 N, vec3 T, vec3 B, out float NH) +{ + vec3 Ht = sample_ggx(rand, a2); + NH = Ht.z; + return tangent_to_world(Ht, N, T, B); +} + +#ifdef HAMMERSLEY_SIZE +vec3 sample_ggx(float nsample, float a2, vec3 N, vec3 T, vec3 B) +{ + vec3 Xi = hammersley_3d(nsample); + vec3 Ht = sample_ggx(Xi, a2); + return tangent_to_world(Ht, N, T, B); +} + +vec3 sample_hemisphere(float nsample, vec3 N, vec3 T, vec3 B) +{ + vec3 Xi = hammersley_3d(nsample); + + float z = Xi.x; /* cos theta */ + float r = sqrt(max(0.0, 1.0f - z*z)); /* sin theta */ + float x = r * Xi.y; + float y = r * Xi.z; + + vec3 Ht = vec3(x, y, z); + + return tangent_to_world(Ht, N, T, B); +} + +vec3 sample_cone(float nsample, float angle, vec3 N, vec3 T, vec3 B) +{ + vec3 Xi = hammersley_3d(nsample); + + float z = cos(angle * Xi.x); /* cos theta */ + float r = sqrt(max(0.0, 1.0f - z*z)); /* sin theta */ + float x = r * Xi.y; + float y = r * Xi.z; + + vec3 Ht = vec3(x, y, z); + + return tangent_to_world(Ht, N, T, B); +} +#endif diff --git a/source/blender/draw/engines/eevee/shaders/btdf_lut_frag.glsl b/source/blender/draw/engines/eevee/shaders/btdf_lut_frag.glsl new file mode 100644 index 00000000000..5f0af6a6f5b --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/btdf_lut_frag.glsl @@ -0,0 +1,59 @@ + +uniform float a2; + +out vec4 FragColor; + +void main() { + vec3 N, T, B, V; + + float x = gl_FragCoord.x / BRDF_LUT_SIZE; + float y = gl_FragCoord.y / BRDF_LUT_SIZE; + /* There is little variation if ior > 1.0 so we + * maximize LUT precision for ior < 1.0 */ + x = x * 1.1; + float ior = (x > 1.0) ? ior_from_f0((x-1.0) * 10.0) : sqrt(x); + float NV = (1.0 - (clamp(y, 1e-4, 0.9999))); + + N = vec3(0.0, 0.0, 1.0); + T = vec3(1.0, 0.0, 0.0); + B = vec3(0.0, 1.0, 0.0); + V = vec3(sqrt(1.0 - NV * NV), 0.0, NV); + + setup_noise(); + + /* Integrating BTDF */ + float btdf_accum = 0.0; + for (float i = 0.0; i < sampleCount; i++) { + vec3 H = sample_ggx(i, a2, N, T, B); /* Microfacet normal */ + + float VH = dot(V, H); + + /* Check if there is total internal reflections. */ + float c = abs(VH); + float g = ior * ior - 1.0 + c * c; + + float eta = 1.0/ior; + if (dot(H, V) < 0.0) { + H = -H; + eta = ior; + } + + vec3 L = refract(-V, H, eta); + float NL = -dot(N, L); + + if ((NL > 0.0) && (g > 0.0)) { + float LH = dot(L, H); + + float G1_l = NL * 2.0 / G1_Smith_GGX(NL, a2); /* Balancing the adjustments made in G1_Smith */ + + /* btdf = abs(VH*LH) * (ior*ior) * D * G(V) * G(L) / (Ht2 * NV) + * pdf = (VH * abs(LH)) * (ior*ior) * D * G(V) / (Ht2 * NV) */ + float btdf = G1_l * abs(VH*LH) / (VH * abs(LH)); + + btdf_accum += btdf; + } + } + btdf_accum /= sampleCount; + + FragColor = vec4(btdf_accum, 0.0, 0.0, 1.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl b/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl new file mode 100644 index 00000000000..9c5a212aead --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/common_uniforms_lib.glsl @@ -0,0 +1,66 @@ + +layout(std140) uniform common_block { + mat4 pastViewProjectionMatrix; + vec4 viewVecs[2]; + vec2 mipRatio[10]; /* To correct mip level texel mis-alignement */ + /* Ambient Occlusion */ + vec4 aoParameters[2]; + /* Volumetric */ + ivec4 volTexSize; + vec4 volDepthParameters; /* Parameters to the volume Z equation */ + vec4 volInvTexSize; + vec4 volJitter; + vec4 volCoordScale; /* To convert volume uvs to screen uvs */ + float volHistoryAlpha; + float volLightClamp; + float volShadowSteps; + bool volUseLights; + /* Screen Space Reflections */ + vec4 ssrParameters; + float ssrBorderFac; + float ssrMaxRoughness; + float ssrFireflyFac; + float ssrBrdfBias; + bool ssrToggle; + /* SubSurface Scattering */ + float sssJitterThreshold; + bool sssToggle; + /* Specular */ + bool specToggle; + /* Lamps */ + int laNumLight; + /* Probes */ + int prbNumPlanar; + int prbNumRenderCube; + int prbNumRenderGrid; + int prbIrradianceVisSize; + float prbIrradianceSmooth; + float prbLodCubeMax; + float prbLodPlanarMax; + /* Misc*/ + int hizMipOffset; + int rayType; + float rayDepth; +}; + +/* rayType (keep in sync with ray_type) */ +#define EEVEE_RAY_CAMERA 0 +#define EEVEE_RAY_SHADOW 1 +#define EEVEE_RAY_DIFFUSE 2 +#define EEVEE_RAY_GLOSSY 3 + +/* aoParameters */ +#define aoDistance aoParameters[0].x +#define aoSamples aoParameters[0].y /* UNUSED */ +#define aoFactor aoParameters[0].z +#define aoInvSamples aoParameters[0].w /* UNUSED */ + +#define aoOffset aoParameters[1].x /* UNUSED */ +#define aoBounceFac aoParameters[1].y +#define aoQuality aoParameters[1].z +#define aoSettings aoParameters[1].w + +/* ssrParameters */ +#define ssrQuality ssrParameters.x +#define ssrThickness ssrParameters.y +#define ssrPixelSize ssrParameters.zw diff --git a/source/blender/draw/engines/eevee/shaders/concentric_samples_lib.glsl b/source/blender/draw/engines/eevee/shaders/concentric_samples_lib.glsl new file mode 100644 index 00000000000..7de27a9fda9 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/concentric_samples_lib.glsl @@ -0,0 +1,267 @@ +/* Precomputed table of concentric samples. + * Generated using this algorithm http://l2program.co.uk/900/concentric-disk-sampling + * Sorted by radius then by rotation angle. + * This way it's better for cache usage and for + * easily restricting to a certain number of + * sample while still having a circular kernel. */ + +#define CONCENTRIC_SAMPLE_NUM 256 +const vec2 concentric[CONCENTRIC_SAMPLE_NUM] = +vec2[CONCENTRIC_SAMPLE_NUM]( + vec2(0.0441941738242, 0.0441941738242), + vec2(-0.0441941738242, -0.0441941738242), + vec2(-0.0441941738242, 0.0441941738242), + vec2(0.0441941738242, -0.0441941738242), + vec2(0.181111092429, 0.0485285709567), + vec2(0.132582521472, 0.132582521472), + vec2(-0.181111092429, 0.0485285709567), + vec2(0.0485285709567, 0.181111092429), + vec2(-0.181111092429, -0.0485285709567), + vec2(-0.0485285709567, 0.181111092429), + vec2(-0.132582521472, -0.132582521472), + vec2(-0.132582521472, 0.132582521472), + vec2(-0.0485285709567, -0.181111092429), + vec2(0.0485285709567, -0.181111092429), + vec2(0.132582521472, -0.132582521472), + vec2(0.181111092429, -0.0485285709567), + vec2(0.308652606436, 0.0488857703251), + vec2(0.278439538809, 0.141872031169), + vec2(0.220970869121, 0.220970869121), + vec2(-0.278439538809, 0.141872031169), + vec2(0.141872031169, 0.278439538809), + vec2(-0.308652606436, 0.0488857703251), + 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-0.925957819308), + vec2(-0.0490649589778, -0.936215188832), + vec2(0.0490649589778, -0.936215188832), + vec2(0.146657310975, -0.925957819308), + vec2(0.242642854784, -0.905555462146), + vec2(0.335969952699, -0.875231649841), + vec2(0.425616093506, -0.835318616427), + vec2(0.510599095327, -0.786253657449), + vec2(0.589987866609, -0.728574338866), + vec2(0.662912607362, -0.662912607362), + vec2(0.728574338866, -0.589987866609), + vec2(0.786253657449, -0.510599095327), + vec2(0.835318616427, -0.425616093506), + vec2(0.875231649841, -0.335969952699), + vec2(0.905555462146, -0.242642854784), + vec2(0.925957819308, -0.146657310975), + vec2(0.936215188832, -0.0490649589778) +); diff --git a/source/blender/draw/engines/eevee/shaders/default_frag.glsl b/source/blender/draw/engines/eevee/shaders/default_frag.glsl new file mode 100644 index 00000000000..3a5f6171a16 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/default_frag.glsl @@ -0,0 +1,47 @@ + +uniform vec3 basecol; +uniform float metallic; +uniform float specular; +uniform float roughness; + +Closure nodetree_exec(void) +{ +#ifdef HAIR_SHADER + vec3 B = normalize(cross(worldNormal, hairTangent)); + float cos_theta; + if (hairThicknessRes == 1) { + vec4 rand = texelFetch(utilTex, ivec3(ivec2(gl_FragCoord.xy) % LUT_SIZE, 2.0), 0); + /* Random cosine normal distribution on the hair surface. */ + cos_theta = rand.x * 2.0 - 1.0; + } + else { + /* Shade as a cylinder. */ + cos_theta = hairThickTime / hairThickness; + } + float sin_theta = sqrt(max(0.0, 1.0f - cos_theta*cos_theta)); + vec3 N = normalize(worldNormal * sin_theta + B * cos_theta); + vec3 vN = mat3(ViewMatrix) * N; +#else + vec3 N = normalize(gl_FrontFacing ? worldNormal : -worldNormal); + vec3 vN = normalize(gl_FrontFacing ? viewNormal : -viewNormal); +#endif + + vec3 dielectric = vec3(0.034) * specular * 2.0; + vec3 albedo = mix(basecol, vec3(0.0), metallic); + vec3 f0 = mix(dielectric, basecol, metallic); + vec3 out_diff, out_spec, ssr_spec; + eevee_closure_default(N, albedo, f0, 1, roughness, 1.0, out_diff, out_spec, ssr_spec); + + Closure result = Closure( + out_spec + out_diff * albedo, + 1.0, + vec4(ssr_spec, roughness), + normal_encode(vN, viewCameraVec), + 0); + +#ifdef LOOKDEV + gl_FragDepth = 0.0; +#endif + + return result; +} diff --git a/source/blender/draw/engines/eevee/shaders/default_world_frag.glsl b/source/blender/draw/engines/eevee/shaders/default_world_frag.glsl new file mode 100644 index 00000000000..126f2d9610a --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/default_world_frag.glsl @@ -0,0 +1,62 @@ + +uniform float backgroundAlpha; +uniform vec3 color; + +out vec4 FragColor; + +#ifdef LOOKDEV +uniform mat4 ProjectionMatrix; +uniform mat4 ProjectionMatrixInverse; +uniform mat4 ViewMatrixInverse; +uniform mat3 StudioLightMatrix; +uniform sampler2D image; +uniform float studioLightBackground = 1.0; +in vec3 viewPosition; + +#define M_PI 3.14159265358979323846 + +vec3 background_transform_to_world(vec3 viewvec) +{ + vec4 v = (ProjectionMatrix[3][3] == 0.0) ? vec4(viewvec, 1.0) : vec4(0.0, 0.0, 1.0, 1.0); + vec4 co_homogenous = (ProjectionMatrixInverse * v); + + vec4 co = vec4(co_homogenous.xyz / co_homogenous.w, 0.0); + return (ViewMatrixInverse * co).xyz; +} + +float hypot(float x, float y) +{ + return sqrt(x * x + y * y); +} + +vec4 node_tex_environment_equirectangular(vec3 co, sampler2D ima) +{ + vec3 nco = normalize(co); + float u = -atan(nco.y, nco.x) / (2.0 * M_PI) + 0.5; + float v = atan(nco.z, hypot(nco.x, nco.y)) / M_PI + 0.5; + + /* Fix pole bleeding */ + float width = float(textureSize(ima, 0).x); + float texel_width = 1.0 / width; + v = clamp(v, texel_width, 1.0 - texel_width); + + /* Fix u = 0 seam */ + /* This is caused by texture filtering, since uv don't have smooth derivatives + * at u = 0 or 2PI, hardware filtering is using the smallest mipmap for certain + * texels. So we force the highest mipmap and don't do anisotropic filtering. */ + return textureLod(ima, vec2(u, v), 0.0); +} +#endif + +void main() { + vec3 background_color; +#ifdef LOOKDEV + vec3 worldvec = background_transform_to_world(viewPosition); + background_color = node_tex_environment_equirectangular(StudioLightMatrix * worldvec, image).rgb; + background_color = mix(color, background_color, studioLightBackground); +#else + background_color = color; +#endif + + FragColor = vec4(clamp(background_color, vec3(0.0), vec3(1e10)), backgroundAlpha); +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl new file mode 100644 index 00000000000..c3674c8f74c --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_bloom_frag.glsl @@ -0,0 +1,218 @@ +/* Original implementation by Keijiro Takahashi + * Blender integration by Clément Foucault + * + * Original License : + * + * Kino/Bloom v2 - Bloom filter for Unity + * + * Copyright (C) 2015, 2016 Keijiro Takahashi + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + **/ + +uniform sampler2D sourceBuffer; /* Buffer to filter */ +uniform vec2 sourceBufferTexelSize; + +/* Step Blit */ +uniform vec4 curveThreshold; +uniform float clampIntensity; + +/* Step Upsample */ +uniform sampler2D baseBuffer; /* Previous accumulation buffer */ +uniform vec2 baseBufferTexelSize; +uniform float sampleScale; + +/* Step Resolve */ +uniform vec3 bloomColor; + +in vec4 uvcoordsvar; + +out vec4 FragColor; + +/* -------------- Utils ------------- */ + +vec3 safe_color(vec3 c) +{ + /* Clamp to avoid black square artifacts if a pixel goes NaN. */ + return clamp(c, vec3(0.0), vec3(1e20)); /* 1e20 arbitrary. */ +} + +float brightness(vec3 c) +{ + return max(max(c.r, c.g), c.b); +} + +/* 3-tap median filter */ +vec3 median(vec3 a, vec3 b, vec3 c) +{ + return a + b + c - min(min(a, b), c) - max(max(a, b), c); +} + +/* ------------- Filters ------------ */ + +vec3 downsample_filter_high(sampler2D tex, vec2 uv, vec2 texelSize) +{ + /* Downsample with a 4x4 box filter + anti-flicker filter */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1); + + vec3 s1 = textureLod(tex, uv + d.xy, 0.0).rgb; + vec3 s2 = textureLod(tex, uv + d.zy, 0.0).rgb; + vec3 s3 = textureLod(tex, uv + d.xw, 0.0).rgb; + vec3 s4 = textureLod(tex, uv + d.zw, 0.0).rgb; + + /* Karis's luma weighted average (using brightness instead of luma) */ + float s1w = 1.0 / (brightness(s1) + 1.0); + float s2w = 1.0 / (brightness(s2) + 1.0); + float s3w = 1.0 / (brightness(s3) + 1.0); + float s4w = 1.0 / (brightness(s4) + 1.0); + float one_div_wsum = 1.0 / (s1w + s2w + s3w + s4w); + + return (s1 * s1w + s2 * s2w + s3 * s3w + s4 * s4w) * one_div_wsum; +} + +vec3 downsample_filter(sampler2D tex, vec2 uv, vec2 texelSize) +{ + /* Downsample with a 4x4 box filter */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1); + + vec3 s; + s = textureLod(tex, uv + d.xy, 0.0).rgb; + s += textureLod(tex, uv + d.zy, 0.0).rgb; + s += textureLod(tex, uv + d.xw, 0.0).rgb; + s += textureLod(tex, uv + d.zw, 0.0).rgb; + + return s * (1.0 / 4); +} + +vec3 upsample_filter_high(sampler2D tex, vec2 uv, vec2 texelSize) +{ + /* 9-tap bilinear upsampler (tent filter) */ + vec4 d = texelSize.xyxy * vec4(1, 1, -1, 0) * sampleScale; + + vec3 s; + s = textureLod(tex, uv - d.xy, 0.0).rgb; + s += textureLod(tex, uv - d.wy, 0.0).rgb * 2; + s += textureLod(tex, uv - d.zy, 0.0).rgb; + + s += textureLod(tex, uv + d.zw, 0.0).rgb * 2; + s += textureLod(tex, uv , 0.0).rgb * 4; + s += textureLod(tex, uv + d.xw, 0.0).rgb * 2; + + s += textureLod(tex, uv + d.zy, 0.0).rgb; + s += textureLod(tex, uv + d.wy, 0.0).rgb * 2; + s += textureLod(tex, uv + d.xy, 0.0).rgb; + + return s * (1.0 / 16.0); +} + +vec3 upsample_filter(sampler2D tex, vec2 uv, vec2 texelSize) +{ + /* 4-tap bilinear upsampler */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1) * (sampleScale * 0.5); + + vec3 s; + s = textureLod(tex, uv + d.xy, 0.0).rgb; + s += textureLod(tex, uv + d.zy, 0.0).rgb; + s += textureLod(tex, uv + d.xw, 0.0).rgb; + s += textureLod(tex, uv + d.zw, 0.0).rgb; + + return s * (1.0 / 4.0); +} + +/* ----------- Steps ----------- */ + +vec4 step_blit(void) +{ + vec2 uv = uvcoordsvar.xy + sourceBufferTexelSize.xy * 0.5; + +#ifdef HIGH_QUALITY /* Anti flicker */ + vec3 d = sourceBufferTexelSize.xyx * vec3(1, 1, 0); + vec3 s0 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy, 0.0).rgb); + vec3 s1 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy - d.xz, 0.0).rgb); + vec3 s2 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy + d.xz, 0.0).rgb); + vec3 s3 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy - d.zy, 0.0).rgb); + vec3 s4 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy + d.zy, 0.0).rgb); + vec3 m = median(median(s0.rgb, s1, s2), s3, s4); +#else + vec3 s0 = safe_color(textureLod(sourceBuffer, uvcoordsvar.xy, 0.0).rgb); + vec3 m = s0.rgb; +#endif + + /* Pixel brightness */ + float br = brightness(m); + + /* Under-threshold part: quadratic curve */ + float rq = clamp(br - curveThreshold.x, 0, curveThreshold.y); + rq = curveThreshold.z * rq * rq; + + /* Combine and apply the brightness response curve. */ + m *= max(rq, br - curveThreshold.w) / max(1e-5, br); + + /* Clamp pixel intensity */ + br = max(1e-5, brightness(m)); + m *= 1.0 - max(0.0, br - clampIntensity) / br; + + return vec4(m, 1.0); +} + +vec4 step_downsample(void) +{ +#ifdef HIGH_QUALITY /* Anti flicker */ + vec3 sample = downsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); +#else + vec3 sample = downsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); +#endif + return vec4(sample, 1.0); +} + +vec4 step_upsample(void) +{ +#ifdef HIGH_QUALITY + vec3 blur = upsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); +#else + vec3 blur = upsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); +#endif + vec3 base = textureLod(baseBuffer, uvcoordsvar.xy, 0.0).rgb; + return vec4(base + blur, 1.0); +} + +vec4 step_resolve(void) +{ +#ifdef HIGH_QUALITY + vec3 blur = upsample_filter_high(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); +#else + vec3 blur = upsample_filter(sourceBuffer, uvcoordsvar.xy, sourceBufferTexelSize); +#endif + vec4 base = textureLod(baseBuffer, uvcoordsvar.xy, 0.0); + vec3 cout = base.rgb + blur * bloomColor; + return vec4(cout, base.a); +} + +void main(void) +{ +#if defined(STEP_BLIT) + FragColor = step_blit(); +#elif defined(STEP_DOWNSAMPLE) + FragColor = step_downsample(); +#elif defined(STEP_UPSAMPLE) + FragColor = step_upsample(); +#elif defined(STEP_RESOLVE) + FragColor = step_resolve(); +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_dof_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_dof_frag.glsl new file mode 100644 index 00000000000..27517ebd86e --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_dof_frag.glsl @@ -0,0 +1,241 @@ + +uniform mat4 ProjectionMatrix; + +uniform sampler2D colorBuffer; +uniform sampler2D depthBuffer; + +uniform vec3 dofParams; + +#define dof_aperturesize dofParams.x +#define dof_distance dofParams.y +#define dof_invsensorsize dofParams.z + +uniform vec4 bokehParams[2]; + +#define bokeh_rotation bokehParams[0].x +#define bokeh_ratio bokehParams[0].y +#define bokeh_maxsize bokehParams[0].z +#define bokeh_sides bokehParams[1] /* Polygon Bokeh shape number of sides (with precomputed vars) */ + +uniform vec2 nearFar; /* Near & far view depths values */ + +#define M_PI 3.1415926535897932384626433832795 +#define M_2PI 6.2831853071795864769252868 + +/* -------------- Utils ------------- */ + +/* divide by sensor size to get the normalized size */ +#define calculate_coc(zdepth) (dof_aperturesize * (dof_distance / zdepth - 1.0) * dof_invsensorsize) + +#define linear_depth(z) ((ProjectionMatrix[3][3] == 0.0) \ + ? (nearFar.x * nearFar.y) / (z * (nearFar.x - nearFar.y) + nearFar.y) \ + : (z * 2.0 - 1.0) * nearFar.y) + +#define weighted_sum(a, b, c, d, e) (a * e.x + b * e.y + c * e.z + d * e.w) / max(1e-6, dot(e, vec4(1.0))); + +float max_v4(vec4 v) { return max(max(v.x, v.y), max(v.z, v.w)); } + +#define THRESHOLD 1.0 + +#ifdef STEP_DOWNSAMPLE + +layout(location = 0) out vec4 nearColor; +layout(location = 1) out vec4 farColor; +layout(location = 2) out vec2 cocData; + +/* Downsample the color buffer to half resolution. + * Weight color samples by + * Compute maximum CoC for near and far blur. */ +void main(void) +{ + ivec4 uvs = ivec4(gl_FragCoord.xyxy) * 2 + ivec4(0, 0, 1, 1); + + /* custom downsampling */ + vec4 color1 = texelFetch(colorBuffer, uvs.xy, 0); + vec4 color2 = texelFetch(colorBuffer, uvs.zw, 0); + vec4 color3 = texelFetch(colorBuffer, uvs.zy, 0); + vec4 color4 = texelFetch(colorBuffer, uvs.xw, 0); + + /* Leverage SIMD by combining 4 depth samples into a vec4 */ + vec4 depth; + depth.r = texelFetch(depthBuffer, uvs.xy, 0).r; + depth.g = texelFetch(depthBuffer, uvs.zw, 0).r; + depth.b = texelFetch(depthBuffer, uvs.zy, 0).r; + depth.a = texelFetch(depthBuffer, uvs.xw, 0).r; + + vec4 zdepth = linear_depth(depth); + + /* Compute signed CoC for each depth samples */ + vec4 coc_near = calculate_coc(zdepth); + vec4 coc_far = -coc_near; + + cocData.x = max(max_v4(coc_near), 0.0); + cocData.y = max(max_v4(coc_far), 0.0); + + /* now we need to write the near-far fields premultiplied by the coc + * also use bilateral weighting by each coc values to avoid bleeding. */ + vec4 near_weights = step(THRESHOLD, coc_near) * clamp(1.0 - abs(cocData.x - coc_near), 0.0, 1.0); + vec4 far_weights = step(THRESHOLD, coc_far) * clamp(1.0 - abs(cocData.y - coc_far), 0.0, 1.0); + +# ifdef USE_ALPHA_DOF + /* Premult */ + color1.rgb *= color1.a; + color2.rgb *= color2.a; + color3.rgb *= color3.a; + color4.rgb *= color4.a; +# endif + + /* now write output to weighted buffers. */ + nearColor = weighted_sum(color1, color2, color3, color4, near_weights); + farColor = weighted_sum(color1, color2, color3, color4, far_weights); +} + +#elif defined(STEP_SCATTER) + +flat in vec4 color; +flat in float weight; +flat in float smoothFac; +flat in ivec2 edge; +/* coordinate used for calculating radius */ +in vec2 particlecoord; + +layout(location = 0) out vec4 fragColor; +# ifdef USE_ALPHA_DOF +layout(location = 1) out float fragAlpha; +# endif + +/* accumulate color in the near/far blur buffers */ +void main(void) +{ + /* Discard to avoid bleeding onto the next layer */ + if (int(gl_FragCoord.x) * edge.x + edge.y > 0) + discard; + + /* Circle Dof */ + float dist = length(particlecoord); + + /* Ouside of bokeh shape */ + if (dist > 1.0) + discard; + + /* Regular Polygon Dof */ + if (bokeh_sides.x > 0.0) { + /* Circle parametrization */ + float theta = atan(particlecoord.y, particlecoord.x) + bokeh_rotation; + + /* Optimized version of : + * float denom = theta - (M_2PI / bokeh_sides) * floor((bokeh_sides * theta + M_PI) / M_2PI); + * float r = cos(M_PI / bokeh_sides) / cos(denom); */ + float denom = theta - bokeh_sides.y * floor(bokeh_sides.z * theta + 0.5); + float r = bokeh_sides.w / cos(denom); + + /* Divide circle radial coord by the shape radius for angle theta. + * Giving us the new linear radius to the shape edge. */ + dist /= r; + + /* Ouside of bokeh shape */ + if (dist > 1.0) + discard; + } + + fragColor = color; + + /* Smooth the edges a bit. This effectively reduce the bokeh shape + * but does fade out the undersampling artifacts. */ + float shape = smoothstep(1.0, min(0.999, smoothFac), dist); + + fragColor *= shape; + +# ifdef USE_ALPHA_DOF + fragAlpha = fragColor.a; + fragColor.a = weight * shape; +# endif +} + +#elif defined(STEP_RESOLVE) + +#define MERGE_THRESHOLD 4.0 + +uniform sampler2D scatterBuffer; +uniform sampler2D scatterAlphaBuffer; + +in vec4 uvcoordsvar; +out vec4 fragColor; + +vec4 upsample_filter(sampler2D tex, vec2 uv, vec2 texelSize) +{ + /* TODO FIXME: Clamp the sample position + * depending on the layer to avoid bleeding. + * This is not really noticeable so leaving it as is for now. */ + +#if 1 /* 9-tap bilinear upsampler (tent filter) */ + vec4 d = texelSize.xyxy * vec4(1, 1, -1, 0); + + vec4 s; + s = textureLod(tex, uv - d.xy, 0.0); + s += textureLod(tex, uv - d.wy, 0.0) * 2; + s += textureLod(tex, uv - d.zy, 0.0); + + s += textureLod(tex, uv + d.zw, 0.0) * 2; + s += textureLod(tex, uv , 0.0) * 4; + s += textureLod(tex, uv + d.xw, 0.0) * 2; + + s += textureLod(tex, uv + d.zy, 0.0); + s += textureLod(tex, uv + d.wy, 0.0) * 2; + s += textureLod(tex, uv + d.xy, 0.0); + + return s * (1.0 / 16.0); +#else + /* 4-tap bilinear upsampler */ + vec4 d = texelSize.xyxy * vec4(-1, -1, +1, +1) * 0.5; + + vec4 s; + s = textureLod(tex, uv + d.xy, 0.0); + s += textureLod(tex, uv + d.zy, 0.0); + s += textureLod(tex, uv + d.xw, 0.0); + s += textureLod(tex, uv + d.zw, 0.0); + + return s * (1.0 / 4.0); +#endif +} + +/* Combine the Far and Near color buffers */ +void main(void) +{ + vec2 uv = uvcoordsvar.xy; + /* Recompute Near / Far CoC per pixel */ + float depth = textureLod(depthBuffer, uv, 0.0).r; + float zdepth = linear_depth(depth); + float coc_signed = calculate_coc(zdepth); + float coc_far = max(-coc_signed, 0.0); + float coc_near = max(coc_signed, 0.0); + + vec4 focus_col = textureLod(colorBuffer, uv, 0.0); + + vec2 texelSize = vec2(0.5, 1.0) / vec2(textureSize(scatterBuffer, 0)); + vec2 near_uv = uv * vec2(0.5, 1.0); + vec2 far_uv = near_uv + vec2(0.5, 0.0); + vec4 near_col = upsample_filter(scatterBuffer, near_uv, texelSize); + vec4 far_col = upsample_filter(scatterBuffer, far_uv, texelSize); + + float far_w = far_col.a; + float near_w = near_col.a; + float focus_w = 1.0 - smoothstep(1.0, MERGE_THRESHOLD, abs(coc_signed)); + float inv_weight_sum = 1.0 / (near_w + focus_w + far_w); + + focus_col *= focus_w; /* Premul */ + +# ifdef USE_ALPHA_DOF + near_col.a = upsample_filter(scatterAlphaBuffer, near_uv, texelSize).r; + far_col.a = upsample_filter(scatterAlphaBuffer, far_uv, texelSize).r; +# endif + + fragColor = (far_col + near_col + focus_col) * inv_weight_sum; + +# ifdef USE_ALPHA_DOF + /* Unpremult */ + fragColor.rgb /= (fragColor.a > 0.0) ? fragColor.a : 1.0; +# endif +} + +#endif diff --git a/source/blender/draw/engines/eevee/shaders/effect_dof_vert.glsl b/source/blender/draw/engines/eevee/shaders/effect_dof_vert.glsl new file mode 100644 index 00000000000..92fd36f684a --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_dof_vert.glsl @@ -0,0 +1,109 @@ + +uniform vec4 bokehParams[2]; + +#define bokeh_rotation bokehParams[0].x +#define bokeh_ratio bokehParams[0].y +#define bokeh_maxsize bokehParams[0].z + +uniform sampler2D nearBuffer; +uniform sampler2D farBuffer; +uniform sampler2D cocBuffer; + +flat out vec4 color; +flat out float weight; +flat out float smoothFac; +flat out ivec2 edge; +out vec2 particlecoord; + +#define M_PI 3.1415926535897932384626433832795 + +/* Scatter pass, calculate a triangle covering the CoC. */ +void main() +{ + ivec2 tex_size = textureSize(cocBuffer, 0); + /* We render to a double width texture so compute + * the target texel size accordingly */ + vec2 texel_size = vec2(0.5, 1.0) / vec2(tex_size); + + int t_id = gl_VertexID / 3; /* Triangle Id */ + + ivec2 texelco = ivec2(0); + /* some math to get the target pixel */ + texelco.x = t_id % tex_size.x; + texelco.y = t_id / tex_size.x; + + vec2 cocs = texelFetch(cocBuffer, texelco, 0).rg; + + bool is_near = (cocs.x > cocs.y); + float coc = (is_near) ? cocs.x : cocs.y; + + /* Clamp to max size for performance */ + coc = min(coc, bokeh_maxsize); + + if (coc >= 1.0) { + if (is_near) { + color = texelFetch(nearBuffer, texelco, 0); + } + else { + color = texelFetch(farBuffer, texelco, 0); + } + /* find the area the pixel will cover and divide the color by it */ + /* HACK: 4.0 out of nowhere (I suppose it's 4 pixels footprint for coc 0?) + * Makes near in focus more closer to 1.0 alpha. */ + weight = 4.0 / (coc * coc * M_PI); + color *= weight; + + /* Compute edge to discard fragment that does not belong to the other layer. */ + edge.x = (is_near) ? 1 : -1; + edge.y = (is_near) ? -tex_size.x + 1 : tex_size.x; + } + else { + /* Don't produce any fragments */ + color = vec4(0.0); + gl_Position = vec4(0.0, 0.0, 0.0, 1.0); + return; + } + + /* Generate Triangle : less memory fetches from a VBO */ + int v_id = gl_VertexID % 3; /* Vertex Id */ + + /* Extend to cover at least the unit circle */ + const float extend = (cos(M_PI / 4.0) + 1.0) * 2.0; + /* Crappy diagram + * ex 1 + * | \ + * | \ + * 1 | \ + * | \ + * | \ + * 0 | x \ + * | Circle \ + * | Origin \ + * -1 0 --------------- 2 + * -1 0 1 ex + **/ + gl_Position.x = float(v_id / 2) * extend - 1.0; /* int divisor round down */ + gl_Position.y = float(v_id % 2) * extend - 1.0; + gl_Position.z = 0.0; + gl_Position.w = 1.0; + + /* Generate Triangle */ + particlecoord = gl_Position.xy; + + gl_Position.xy *= coc * texel_size * vec2(bokeh_ratio, 1.0); + gl_Position.xy -= 1.0 - 0.5 * texel_size; /* NDC Bottom left */ + gl_Position.xy += (0.5 + vec2(texelco) * 2.0) * texel_size; + + /* Push far plane to left side. */ + if (!is_near) { + gl_Position.x += 2.0 / 2.0; + } + + /* don't do smoothing for small sprites */ + if (coc > 3.0) { + smoothFac = 1.0 - 1.5 / coc; + } + else { + smoothFac = 1.0; + } +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_downsample_cube_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_downsample_cube_frag.glsl new file mode 100644 index 00000000000..79f86cfae58 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_downsample_cube_frag.glsl @@ -0,0 +1,30 @@ +/** + * Simple downsample shader. Takes the average of the 4 texels of lower mip. + **/ + +uniform samplerCube source; +uniform float texelSize; + +flat in int fFace; + +out vec4 FragColor; + +const vec3 maj_axes[6] = vec3[6](vec3(1.0, 0.0, 0.0), vec3(-1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, -1.0, 0.0), vec3( 0.0, 0.0, 1.0), vec3( 0.0, 0.0, -1.0)); +const vec3 x_axis[6] = vec3[6](vec3(0.0, 0.0, -1.0), vec3( 0.0, 0.0, 1.0), vec3(1.0, 0.0, 0.0), vec3(1.0, 0.0, 0.0), vec3( 1.0, 0.0, 0.0), vec3(-1.0, 0.0, 0.0)); +const vec3 y_axis[6] = vec3[6](vec3(0.0, -1.0, 0.0), vec3( 0.0, -1.0, 0.0), vec3(0.0, 0.0, 1.0), vec3(0.0, 0.0, -1.0), vec3( 0.0, -1.0, 0.0), vec3( 0.0, -1.0, 0.0)); + +float brightness(vec3 c) +{ + return max(max(c.r, c.g), c.b); +} + +void main() +{ + vec2 uvs = gl_FragCoord.xy * texelSize; + + uvs = 2.0 * uvs - 1.0; + + vec3 cubevec = x_axis[fFace] * uvs.x + y_axis[fFace] * uvs.y + maj_axes[fFace]; + + FragColor = textureLod(source, cubevec, 0.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_downsample_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_downsample_frag.glsl new file mode 100644 index 00000000000..8f06e161a20 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_downsample_frag.glsl @@ -0,0 +1,37 @@ +/** + * Simple downsample shader. Takes the average of the 4 texels of lower mip. + **/ + +uniform sampler2D source; +uniform float fireflyFactor; + +out vec4 FragColor; + +float brightness(vec3 c) +{ + return max(max(c.r, c.g), c.b); +} + +void main() +{ +#if 0 + /* Reconstructing Target uvs like this avoid missing pixels if NPO2 */ + vec2 uvs = gl_FragCoord.xy * 2.0 / vec2(textureSize(source, 0)); + + FragColor = textureLod(source, uvs, 0.0); +#else + vec2 texel_size = 1.0 / vec2(textureSize(source, 0)); + vec2 uvs = gl_FragCoord.xy * 2.0 * texel_size; + vec4 ofs = texel_size.xyxy * vec4(0.75, 0.75, -0.75, -0.75); + + FragColor = textureLod(source, uvs + ofs.xy, 0.0); + FragColor += textureLod(source, uvs + ofs.xw, 0.0); + FragColor += textureLod(source, uvs + ofs.zy, 0.0); + FragColor += textureLod(source, uvs + ofs.zw, 0.0); + FragColor *= 0.25; + + /* Clamped brightness. */ + float luma = max(1e-8, brightness(FragColor.rgb)); + FragColor *= 1.0 - max(0.0, luma - fireflyFactor) / luma; +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_gtao_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_gtao_frag.glsl new file mode 100644 index 00000000000..ccef05ef985 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_gtao_frag.glsl @@ -0,0 +1,77 @@ +/** + * This shader only compute maximum horizon angles for each directions. + * The final integration is done at the resolve stage with the shading normal. + **/ + +uniform float rotationOffset; + +out vec4 FragColor; + +#ifdef DEBUG_AO +uniform sampler2D normalBuffer; + +void main() +{ + vec2 texel_size = 1.0 / vec2(textureSize(depthBuffer, 0)).xy; + vec2 uvs = saturate(gl_FragCoord.xy * texel_size); + + float depth = textureLod(depthBuffer, uvs, 0.0).r; + + vec3 viewPosition = get_view_space_from_depth(uvs, depth); + vec3 V = viewCameraVec; + vec3 normal = normal_decode(texture(normalBuffer, uvs).rg, V); + + vec3 bent_normal; + float visibility; + + vec4 noise = texelfetch_noise_tex(gl_FragCoord.xy); + + gtao_deferred(normal, noise, depth, visibility, bent_normal); + + /* Handle Background case. Prevent artifact due to uncleared Horizon Render Target. */ + FragColor = vec4((depth == 1.0) ? 0.0 : visibility); +} + +#else + +#ifdef LAYERED_DEPTH +uniform sampler2DArray depthBufferLayered; +uniform int layer; +# define gtao_depthBuffer depthBufferLayered +# define gtao_textureLod(a, b, c) textureLod(a, vec3(b, layer), c) + +#else +# define gtao_depthBuffer depthBuffer +# define gtao_textureLod(a, b, c) textureLod(a, b, c) + +#endif + +void main() +{ + vec2 uvs = saturate(gl_FragCoord.xy / vec2(textureSize(gtao_depthBuffer, 0).xy)); + float depth = gtao_textureLod(gtao_depthBuffer, uvs, 0.0).r; + + if (depth == 1.0) { + /* Do not trace for background */ + FragColor = vec4(0.0); + return; + } + + /* Avoid self shadowing. */ + depth = saturate(depth - 3e-6); /* Tweaked for 24bit depth buffer. */ + + vec3 viewPosition = get_view_space_from_depth(uvs, depth); + vec4 noise = texelfetch_noise_tex(gl_FragCoord.xy); + vec2 max_dir = get_max_dir(viewPosition.z); + vec4 dirs; + dirs.xy = get_ao_dir(noise.x * 0.5); + dirs.zw = get_ao_dir(noise.x * 0.5 + 0.5); + + /* Search in 4 directions. */ + FragColor.xy = search_horizon_sweep(dirs.xy, viewPosition, uvs, noise.y, max_dir); + FragColor.zw = search_horizon_sweep(dirs.zw, viewPosition, uvs, noise.y, max_dir); + + /* Resize output for integer texture. */ + FragColor = pack_horizons(FragColor); +} +#endif diff --git a/source/blender/draw/engines/eevee/shaders/effect_minmaxz_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_minmaxz_frag.glsl new file mode 100644 index 00000000000..edfd0f307e9 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_minmaxz_frag.glsl @@ -0,0 +1,95 @@ +/** + * Shader that downsample depth buffer, + * saving min and max value of each texel in the above mipmaps. + * Adapted from http://rastergrid.com/blog/2010/10/hierarchical-z-map-based-occlusion-culling/ + **/ + +#ifdef LAYERED +uniform sampler2DArray depthBuffer; +uniform int depthLayer; +#else +uniform sampler2D depthBuffer; +#endif + +#ifdef LAYERED +# define sampleLowerMip(t) texelFetch(depthBuffer, ivec3(t, depthLayer), 0).r +# define gatherLowerMip(t) textureGather(depthBuffer, vec3(t, depthLayer)) +#else +# define sampleLowerMip(t) texelFetch(depthBuffer, t, 0).r +# define gatherLowerMip(t) textureGather(depthBuffer, t) +#endif + +#ifdef MIN_PASS +#define minmax2(a, b) min(a, b) +#define minmax3(a, b, c) min(min(a, b), c) +#define minmax4(a, b, c, d) min(min(min(a, b), c), d) +#else /* MAX_PASS */ +#define minmax2(a, b) max(a, b) +#define minmax3(a, b, c) max(max(a, b), c) +#define minmax4(a, b, c, d) max(max(max(a, b), c), d) +#endif + +/* On some AMD card / driver combination, it is needed otherwise, + * the shader does not write anything. */ +#if defined(GPU_INTEL) || defined(GPU_ATI) +out vec4 fragColor; +#endif + +void main() +{ + ivec2 texelPos = ivec2(gl_FragCoord.xy); + ivec2 mipsize = textureSize(depthBuffer, 0).xy; + +#ifndef COPY_DEPTH + texelPos *= 2; +#endif + +#ifdef COPY_DEPTH + float val = sampleLowerMip(texelPos); +#else + vec4 samp; +# ifdef GPU_ARB_texture_gather + /* + 1.0 to gather at the center of target 4 texels. */ + samp = gatherLowerMip((vec2(texelPos) + 1.0) / vec2(mipsize)); +# else + samp.x = sampleLowerMip(texelPos); + samp.y = sampleLowerMip(texelPos + ivec2(1, 0)); + samp.z = sampleLowerMip(texelPos + ivec2(1, 1)); + samp.w = sampleLowerMip(texelPos + ivec2(0, 1)); +# endif + + float val = minmax4(samp.x, samp.y, samp.z, samp.w); + + /* if we are reducing an odd-width texture then fetch the edge texels */ + if (((mipsize.x & 1) != 0) && (texelPos.x == mipsize.x - 3)) { + /* if both edges are odd, fetch the top-left corner texel */ + if (((mipsize.y & 1) != 0) && (texelPos.y == mipsize.y - 3)) { + samp.x = sampleLowerMip(texelPos + ivec2(2, 2)); + val = minmax2(val, samp.x); + } +# ifdef GPU_ARB_texture_gather + samp = gatherLowerMip((vec2(texelPos) + vec2(2.0, 1.0)) / vec2(mipsize)); +# else + samp.y = sampleLowerMip(texelPos + ivec2(2, 0)); + samp.z = sampleLowerMip(texelPos + ivec2(2, 1)); +# endif + val = minmax3(val, samp.y, samp.z); + } + /* if we are reducing an odd-height texture then fetch the edge texels */ + if (((mipsize.y & 1) != 0) && (texelPos.y == mipsize.y - 3)) { +# ifdef GPU_ARB_texture_gather + samp = gatherLowerMip((vec2(texelPos) + vec2(1.0, 2.0)) / vec2(mipsize)); +# else + samp.x = sampleLowerMip(texelPos + ivec2(0, 2)); + samp.y = sampleLowerMip(texelPos + ivec2(1, 2)); +# endif + val = minmax3(val, samp.x, samp.y); + } +#endif + +#if defined(GPU_INTEL) || defined(GPU_ATI) + /* Use color format instead of 24bit depth texture */ + fragColor = vec4(val); +#endif + gl_FragDepth = val; +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_mist_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_mist_frag.glsl new file mode 100644 index 00000000000..fe38b2e9aac --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_mist_frag.glsl @@ -0,0 +1,31 @@ +/* Convert depth to Mist factor */ +uniform vec3 mistSettings; + +#define mistStart mistSettings.x +#define mistInvDistance mistSettings.y +#define mistFalloff mistSettings.z + +out vec4 fragColor; + +void main() +{ + vec2 texel_size = 1.0 / vec2(textureSize(depthBuffer, 0)).xy; + vec2 uvs = gl_FragCoord.xy * texel_size; + + float depth = textureLod(depthBuffer, uvs, 0.0).r; + vec3 co = get_view_space_from_depth(uvs, depth); + + float zcor = (ProjectionMatrix[3][3] == 0.0) ? length(co) : -co.z; + + /* bring depth into 0..1 range */ + float mist = saturate((zcor - mistStart) * mistInvDistance); + + /* falloff */ + mist = pow(mist, mistFalloff); + + fragColor = vec4(mist); + + // if (mist > 0.999) fragColor = vec4(1.0); + // else if (mist > 0.0001) fragColor = vec4(0.5); + // else fragColor = vec4(0.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_motion_blur_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_motion_blur_frag.glsl new file mode 100644 index 00000000000..73e284570cd --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_motion_blur_frag.glsl @@ -0,0 +1,65 @@ + +uniform sampler2D colorBuffer; +uniform sampler2D depthBuffer; + + +/* current frame */ +uniform mat4 currInvViewProjMatrix; + +/* past frame frame */ +uniform mat4 pastViewProjMatrix; + +in vec4 uvcoordsvar; + +out vec4 FragColor; + +#define MAX_SAMPLE 64 + +uniform int samples; + +float wang_hash_noise(uint s) +{ + uint seed = (uint(gl_FragCoord.x) * 1664525u + uint(gl_FragCoord.y)) + s; + + seed = (seed ^ 61u) ^ (seed >> 16u); + seed *= 9u; + seed = seed ^ (seed >> 4u); + seed *= 0x27d4eb2du; + seed = seed ^ (seed >> 15u); + + float value = float(seed); + value *= 1.0 / 4294967296.0; + return fract(value); +} + +void main() +{ + vec3 ndc_pos; + ndc_pos.xy = uvcoordsvar.xy; + ndc_pos.z = texture(depthBuffer, uvcoordsvar.xy).x; + + float inv_samples = 1.0 / float(samples); + float noise = 2.0 * wang_hash_noise(0u) * inv_samples; + + /* Normalize Device Coordinates are [-1, +1]. */ + ndc_pos = ndc_pos * 2.0 - 1.0; + + vec4 p = currInvViewProjMatrix * vec4(ndc_pos, 1.0); + vec3 world_pos = p.xyz / p.w; /* Perspective divide */ + + /* Now find where was this pixel position + * inside the past camera viewport */ + vec4 old_ndc = pastViewProjMatrix * vec4(world_pos, 1.0); + old_ndc.xyz /= old_ndc.w; /* Perspective divide */ + + vec2 motion = (ndc_pos.xy - old_ndc.xy) * 0.25; /* 0.25 fit cycles ref */ + + float inc = 2.0 * inv_samples; + float i = -1.0 + noise; + + FragColor = vec4(0.0); + for (int j = 0; j < samples && j < MAX_SAMPLE; j++) { + FragColor += textureLod(colorBuffer, uvcoordsvar.xy + motion * i, 0.0) * inv_samples; + i += inc; + } +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_ssr_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_ssr_frag.glsl new file mode 100644 index 00000000000..b8a86f8d742 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_ssr_frag.glsl @@ -0,0 +1,476 @@ + +/* Based on Stochastic Screen Space Reflections + * https://www.ea.com/frostbite/news/stochastic-screen-space-reflections */ + +#define MAX_MIP 9.0 + +uniform ivec2 halfresOffset; + +ivec2 encode_hit_data(vec2 hit_pos, bool has_hit, bool is_planar) +{ + ivec2 hit_data = ivec2(saturate(hit_pos) * 32767.0); /* 16bit signed int limit */ + hit_data.x *= (is_planar) ? -1 : 1; + hit_data.y *= (has_hit) ? 1 : -1; + return hit_data; +} + +vec2 decode_hit_data(vec2 hit_data, out bool has_hit, out bool is_planar) +{ + is_planar = (hit_data.x < 0); + has_hit = (hit_data.y > 0); + return vec2(abs(hit_data)) / 32767.0; /* 16bit signed int limit */ +} + +#ifdef STEP_RAYTRACE + +uniform sampler2D normalBuffer; +uniform sampler2D specroughBuffer; + +layout(location = 0) out ivec2 hitData; +layout(location = 1) out float pdfData; + +void do_planar_ssr(int index, vec3 V, vec3 N, vec3 T, vec3 B, vec3 planeNormal, vec3 viewPosition, float a2, vec4 rand) +{ + float NH; + vec3 H = sample_ggx(rand.xzw, a2, N, T, B, NH); /* Microfacet normal */ + float pdf = pdf_ggx_reflect(NH, a2); + + vec3 R = reflect(-V, H); + R = reflect(R, planeNormal); + + /* If ray is bad (i.e. going below the plane) regenerate. */ + if (dot(R, planeNormal) > 0.0) { + vec3 H = sample_ggx(rand.xzw * vec3(1.0, -1.0, -1.0), a2, N, T, B, NH); /* Microfacet normal */ + pdf = pdf_ggx_reflect(NH, a2); + + R = reflect(-V, H); + R = reflect(R, planeNormal); + } + + pdfData = min(1024e32, pdf); /* Theoretical limit of 16bit float */ + + /* Since viewspace hit position can land behind the camera in this case, + * we save the reflected view position (visualize it as the hit position + * below the reflection plane). This way it's garanted that the hit will + * be in front of the camera. That let us tag the bad rays with a negative + * sign in the Z component. */ + vec3 hit_pos = raycast(index, viewPosition, R * 1e16, 1e16, rand.y, ssrQuality, a2, false); + + hitData = encode_hit_data(hit_pos.xy, (hit_pos.z > 0.0), true); +} + +void do_ssr(vec3 V, vec3 N, vec3 T, vec3 B, vec3 viewPosition, float a2, vec4 rand) +{ + float NH; + vec3 H = sample_ggx(rand.xzw, a2, N, T, B, NH); /* Microfacet normal */ + float pdf = pdf_ggx_reflect(NH, a2); + + vec3 R = reflect(-V, H); + pdfData = min(1024e32, pdf); /* Theoretical limit of 16bit float */ + + vec3 hit_pos = raycast(-1, viewPosition, R * 1e16, ssrThickness, rand.y, ssrQuality, a2, true); + + hitData = encode_hit_data(hit_pos.xy, (hit_pos.z > 0.0), false); +} + +void main() +{ +#ifdef FULLRES + ivec2 fullres_texel = ivec2(gl_FragCoord.xy); + ivec2 halfres_texel = fullres_texel; +#else + ivec2 fullres_texel = ivec2(gl_FragCoord.xy) * 2 + halfresOffset; + ivec2 halfres_texel = ivec2(gl_FragCoord.xy); +#endif + + float depth = texelFetch(depthBuffer, fullres_texel, 0).r; + + /* Default: not hits. */ + hitData = encode_hit_data(vec2(0.5), false, false); + pdfData = 0.0; + + /* Early out */ + /* We can't do discard because we don't clear the render target. */ + if (depth == 1.0) + return; + + vec2 uvs = vec2(fullres_texel) / vec2(textureSize(depthBuffer, 0)); + + /* Using view space */ + vec3 viewPosition = get_view_space_from_depth(uvs, depth); + vec3 V = viewCameraVec; + vec3 N = normal_decode(texelFetch(normalBuffer, fullres_texel, 0).rg, V); + + /* Retrieve pixel data */ + vec4 speccol_roughness = texelFetch(specroughBuffer, fullres_texel, 0).rgba; + + /* Early out */ + if (dot(speccol_roughness.rgb, vec3(1.0)) == 0.0) + return; + + float roughness = speccol_roughness.a; + float roughnessSquared = max(1e-3, roughness * roughness); + float a2 = roughnessSquared * roughnessSquared; + + /* Early out */ + if (roughness > ssrMaxRoughness + 0.2) + return; + + vec4 rand = texelFetch(utilTex, ivec3(halfres_texel % LUT_SIZE, 2), 0); + + /* Gives *perfect* reflection for very small roughness */ + if (roughness < 0.04) { + rand.xzw *= 0.0; + } + /* Importance sampling bias */ + rand.x = mix(rand.x, 0.0, ssrBrdfBias); + + vec3 worldPosition = transform_point(ViewMatrixInverse, viewPosition); + vec3 wN = transform_direction(ViewMatrixInverse, N); + + vec3 T, B; + make_orthonormal_basis(N, T, B); /* Generate tangent space */ + + /* Planar Reflections */ + for (int i = 0; i < MAX_PLANAR && i < prbNumPlanar; ++i) { + PlanarData pd = planars_data[i]; + + float fade = probe_attenuation_planar(pd, worldPosition, wN, 0.0); + + if (fade > 0.5) { + /* Find view vector / reflection plane intersection. */ + /* TODO optimize, use view space for all. */ + vec3 tracePosition = line_plane_intersect(worldPosition, cameraVec, pd.pl_plane_eq); + tracePosition = transform_point(ViewMatrix, tracePosition); + vec3 planeNormal = transform_direction(ViewMatrix, pd.pl_normal); + + do_planar_ssr(i, V, N, T, B, planeNormal, tracePosition, a2, rand); + return; + } + } + + do_ssr(V, N, T, B, viewPosition, a2, rand); +} + +#else /* STEP_RESOLVE */ + +uniform sampler2D prevColorBuffer; /* previous frame */ +uniform sampler2D normalBuffer; +uniform sampler2D specroughBuffer; + +uniform isampler2D hitBuffer; +uniform sampler2D pdfBuffer; + +uniform int neighborOffset; + +const ivec2 neighbors[32] = ivec2[32]( + ivec2( 0, 0), ivec2( 1, 1), ivec2(-2, 0), ivec2( 0, -2), + ivec2( 0, 0), ivec2( 1, -1), ivec2(-2, 0), ivec2( 0, 2), + ivec2( 0, 0), ivec2(-1, -1), ivec2( 2, 0), ivec2( 0, 2), + ivec2( 0, 0), ivec2(-1, 1), ivec2( 2, 0), ivec2( 0, -2), + + ivec2( 0, 0), ivec2( 2, 2), ivec2(-2, 2), ivec2( 0, -1), + ivec2( 0, 0), ivec2( 2, -2), ivec2(-2, -2), ivec2( 0, 1), + ivec2( 0, 0), ivec2(-2, -2), ivec2(-2, 2), ivec2( 1, 0), + ivec2( 0, 0), ivec2( 2, 2), ivec2( 2, -2), ivec2(-1, 0) +); + +out vec4 fragColor; + +#if 0 /* Finish reprojection with motion vectors */ +vec3 get_motion_vector(vec3 pos) +{ +} + +/* http://bitsquid.blogspot.fr/2017/06/reprojecting-reflections_22.html */ +vec3 find_reflection_incident_point(vec3 cam, vec3 hit, vec3 pos, vec3 N) +{ + float d_cam = point_plane_projection_dist(cam, pos, N); + float d_hit = point_plane_projection_dist(hit, pos, N); + + if (d_hit < d_cam) { + /* Swap */ + float tmp = d_cam; + d_cam = d_hit; + d_hit = tmp; + } + + vec3 proj_cam = cam - (N * d_cam); + vec3 proj_hit = hit - (N * d_hit); + + return (proj_hit - proj_cam) * d_cam / (d_cam + d_hit) + proj_cam; +} +#endif + +float brightness(vec3 c) +{ + return max(max(c.r, c.g), c.b); +} + +vec2 get_reprojected_reflection(vec3 hit, vec3 pos, vec3 N) +{ + /* TODO real reprojection with motion vectors, etc... */ + return project_point(pastViewProjectionMatrix, hit).xy * 0.5 + 0.5; +} + +float get_sample_depth(vec2 hit_co, bool is_planar, float planar_index) +{ + if (is_planar) { + return textureLod(planarDepth, vec3(hit_co, planar_index), 0.0).r; + } + else { + return textureLod(depthBuffer, hit_co, 0.0).r; + } +} + +vec3 get_hit_vector( + vec3 hit_pos, PlanarData pd, vec3 worldPosition, vec3 N, vec3 V, bool is_planar, + inout vec2 hit_co, inout float mask) +{ + vec3 hit_vec; + + if (is_planar) { + /* Reflect back the hit position to have it in non-reflected world space */ + vec3 trace_pos = line_plane_intersect(worldPosition, V, pd.pl_plane_eq); + hit_vec = hit_pos - trace_pos; + hit_vec = reflect(hit_vec, pd.pl_normal); + } + else { + /* Find hit position in previous frame. */ + hit_co = get_reprojected_reflection(hit_pos, worldPosition, N); + hit_vec = hit_pos - worldPosition; + } + + mask = screen_border_mask(hit_co); + return hit_vec; +} + +vec3 get_scene_color(vec2 ref_uvs, float mip, float planar_index, bool is_planar) +{ + if (is_planar) { + return textureLod(probePlanars, vec3(ref_uvs, planar_index), min(mip, prbLodPlanarMax)).rgb; + } + else { + return textureLod(prevColorBuffer, ref_uvs, mip).rgb; + } +} + +vec4 get_ssr_samples( + vec4 hit_pdf, ivec4 hit_data[2], + PlanarData pd, float planar_index, vec3 worldPosition, vec3 N, vec3 V, + float roughnessSquared, float cone_tan, vec2 source_uvs, + inout float weight_acc) +{ + bvec4 is_planar, has_hit; + vec4 hit_co[2]; + hit_co[0].xy = decode_hit_data(hit_data[0].xy, has_hit.x, is_planar.x); + hit_co[0].zw = decode_hit_data(hit_data[0].zw, has_hit.y, is_planar.y); + hit_co[1].xy = decode_hit_data(hit_data[1].xy, has_hit.z, is_planar.z); + hit_co[1].zw = decode_hit_data(hit_data[1].zw, has_hit.w, is_planar.w); + + vec4 hit_depth; + hit_depth.x = get_sample_depth(hit_co[0].xy, is_planar.x, planar_index); + hit_depth.y = get_sample_depth(hit_co[0].zw, is_planar.y, planar_index); + hit_depth.z = get_sample_depth(hit_co[1].xy, is_planar.z, planar_index); + hit_depth.w = get_sample_depth(hit_co[1].zw, is_planar.w, planar_index); + + /* Hit position in view space. */ + vec3 hit_view[4]; + hit_view[0] = get_view_space_from_depth(hit_co[0].xy, hit_depth.x); + hit_view[1] = get_view_space_from_depth(hit_co[0].zw, hit_depth.y); + hit_view[2] = get_view_space_from_depth(hit_co[1].xy, hit_depth.z); + hit_view[3] = get_view_space_from_depth(hit_co[1].zw, hit_depth.w); + + vec4 homcoord = vec4(hit_view[0].z, hit_view[1].z, hit_view[2].z, hit_view[3].z); + homcoord = ProjectionMatrix[2][3] * homcoord + ProjectionMatrix[3][3]; + + /* Hit position in world space. */ + vec3 hit_pos[4]; + hit_pos[0] = transform_point(ViewMatrixInverse, hit_view[0]); + hit_pos[1] = transform_point(ViewMatrixInverse, hit_view[1]); + hit_pos[2] = transform_point(ViewMatrixInverse, hit_view[2]); + hit_pos[3] = transform_point(ViewMatrixInverse, hit_view[3]); + + /* Get actual hit vector and hit coordinate (from last frame). */ + vec4 mask = vec4(1.0); + hit_pos[0] = get_hit_vector(hit_pos[0], pd, worldPosition, N, V, is_planar.x, hit_co[0].xy, mask.x); + hit_pos[1] = get_hit_vector(hit_pos[1], pd, worldPosition, N, V, is_planar.y, hit_co[0].zw, mask.y); + hit_pos[2] = get_hit_vector(hit_pos[2], pd, worldPosition, N, V, is_planar.z, hit_co[1].xy, mask.z); + hit_pos[3] = get_hit_vector(hit_pos[3], pd, worldPosition, N, V, is_planar.w, hit_co[1].zw, mask.w); + + vec4 hit_dist; + hit_dist.x = length(hit_pos[0]); + hit_dist.y = length(hit_pos[1]); + hit_dist.z = length(hit_pos[2]); + hit_dist.w = length(hit_pos[3]); + hit_dist = max(vec4(1e-8), hit_dist); + + /* Normalize */ + hit_pos[0] /= hit_dist.x; + hit_pos[1] /= hit_dist.y; + hit_pos[2] /= hit_dist.z; + hit_pos[3] /= hit_dist.w; + + /* Compute cone footprint in screen space. */ + vec4 cone_footprint = hit_dist * cone_tan; + cone_footprint = ssrBrdfBias * 0.5 * cone_footprint * max(ProjectionMatrix[0][0], ProjectionMatrix[1][1]) / homcoord; + + /* Estimate a cone footprint to sample a corresponding mipmap level. */ + vec4 mip = log2(cone_footprint * max_v2(vec2(textureSize(depthBuffer, 0)))); + mip = clamp(mip, 0.0, MAX_MIP); + + /* Correct UVs for mipmaping mis-alignment */ + hit_co[0].xy *= mip_ratio_interp(mip.x); + hit_co[0].zw *= mip_ratio_interp(mip.y); + hit_co[1].xy *= mip_ratio_interp(mip.z); + hit_co[1].zw *= mip_ratio_interp(mip.w); + + /* Slide 54 */ + vec4 bsdf; + bsdf.x = bsdf_ggx(N, hit_pos[0], V, roughnessSquared); + bsdf.y = bsdf_ggx(N, hit_pos[1], V, roughnessSquared); + bsdf.z = bsdf_ggx(N, hit_pos[2], V, roughnessSquared); + bsdf.w = bsdf_ggx(N, hit_pos[3], V, roughnessSquared); + + vec4 weight = step(1e-8, hit_pdf) * bsdf / max(vec4(1e-8), hit_pdf); + + vec3 sample[4]; + sample[0] = get_scene_color(hit_co[0].xy, mip.x, planar_index, is_planar.x); + sample[1] = get_scene_color(hit_co[0].zw, mip.y, planar_index, is_planar.y); + sample[2] = get_scene_color(hit_co[1].xy, mip.z, planar_index, is_planar.z); + sample[3] = get_scene_color(hit_co[1].zw, mip.w, planar_index, is_planar.w); + + /* Clamped brightness. */ + vec4 luma; + luma.x = brightness(sample[0]); + luma.y = brightness(sample[1]); + luma.z = brightness(sample[2]); + luma.w = brightness(sample[3]); + luma = max(vec4(1e-8), luma); + luma = 1.0 - max(vec4(0.0), luma - ssrFireflyFac) / luma; + + sample[0] *= luma.x; + sample[1] *= luma.y; + sample[2] *= luma.z; + sample[3] *= luma.w; + + /* Protection against NaNs in the history buffer. + * This could be removed if some previous pass has already + * sanitized the input. */ + if (any(isnan(sample[0]))) { + sample[0] = vec3(0.0); weight.x = 0.0; + } + if (any(isnan(sample[1]))) { + sample[1] = vec3(0.0); weight.y = 0.0; + } + if (any(isnan(sample[2]))) { + sample[2] = vec3(0.0); weight.z = 0.0; + } + if (any(isnan(sample[3]))) { + sample[3] = vec3(0.0); weight.w = 0.0; + } + + weight_acc += sum(weight); + + /* Do not add light if ray has failed. */ + vec4 accum; + accum = vec4(sample[0], mask.x) * weight.x * float(has_hit.x); + accum += vec4(sample[1], mask.y) * weight.y * float(has_hit.y); + accum += vec4(sample[2], mask.z) * weight.z * float(has_hit.z); + accum += vec4(sample[3], mask.w) * weight.w * float(has_hit.w); + return accum; +} + +void main() +{ + ivec2 fullres_texel = ivec2(gl_FragCoord.xy); +#ifdef FULLRES + ivec2 halfres_texel = fullres_texel; +#else + ivec2 halfres_texel = ivec2(gl_FragCoord.xy / 2.0); +#endif + vec2 uvs = gl_FragCoord.xy / vec2(textureSize(depthBuffer, 0)); + + float depth = textureLod(depthBuffer, uvs, 0.0).r; + + /* Early out */ + if (depth == 1.0) + discard; + + /* Using world space */ + vec3 viewPosition = get_view_space_from_depth(uvs, depth); /* Needed for viewCameraVec */ + vec3 worldPosition = transform_point(ViewMatrixInverse, viewPosition); + vec3 V = cameraVec; + vec3 vN = normal_decode(texelFetch(normalBuffer, fullres_texel, 0).rg, viewCameraVec); + vec3 N = transform_direction(ViewMatrixInverse, vN); + vec4 speccol_roughness = texelFetch(specroughBuffer, fullres_texel, 0).rgba; + + /* Early out */ + if (dot(speccol_roughness.rgb, vec3(1.0)) == 0.0) + discard; + + float roughness = speccol_roughness.a; + float roughnessSquared = max(1e-3, roughness * roughness); + + vec4 spec_accum = vec4(0.0); + + /* Resolve SSR */ + float cone_cos = cone_cosine(roughnessSquared); + float cone_tan = sqrt(1 - cone_cos * cone_cos) / cone_cos; + cone_tan *= mix(saturate(dot(N, -V) * 2.0), 1.0, roughness); /* Elongation fit */ + + vec2 source_uvs = project_point(pastViewProjectionMatrix, worldPosition).xy * 0.5 + 0.5; + + vec4 ssr_accum = vec4(0.0); + float weight_acc = 0.0; + + if (roughness < ssrMaxRoughness + 0.2) { + /* TODO optimize with textureGather */ + /* Doing these fetches early to hide latency. */ + vec4 hit_pdf; + hit_pdf.x = texelFetch(pdfBuffer, halfres_texel + neighbors[0 + neighborOffset], 0).r; + hit_pdf.y = texelFetch(pdfBuffer, halfres_texel + neighbors[1 + neighborOffset], 0).r; + hit_pdf.z = texelFetch(pdfBuffer, halfres_texel + neighbors[2 + neighborOffset], 0).r; + hit_pdf.w = texelFetch(pdfBuffer, halfres_texel + neighbors[3 + neighborOffset], 0).r; + + ivec4 hit_data[2]; + hit_data[0].xy = texelFetch(hitBuffer, halfres_texel + neighbors[0 + neighborOffset], 0).rg; + hit_data[0].zw = texelFetch(hitBuffer, halfres_texel + neighbors[1 + neighborOffset], 0).rg; + hit_data[1].xy = texelFetch(hitBuffer, halfres_texel + neighbors[2 + neighborOffset], 0).rg; + hit_data[1].zw = texelFetch(hitBuffer, halfres_texel + neighbors[3 + neighborOffset], 0).rg; + + /* Find Planar Reflections affecting this pixel */ + PlanarData pd; + float planar_index; + for (int i = 0; i < MAX_PLANAR && i < prbNumPlanar; ++i) { + pd = planars_data[i]; + + float fade = probe_attenuation_planar(pd, worldPosition, N, 0.0); + + if (fade > 0.5) { + planar_index = float(i); + break; + } + } + + ssr_accum += get_ssr_samples(hit_pdf, hit_data, pd, planar_index, worldPosition, N, V, + roughnessSquared, cone_tan, source_uvs, weight_acc); + } + + /* Compute SSR contribution */ + if (weight_acc > 0.0) { + ssr_accum /= weight_acc; + /* fade between 0.5 and 1.0 roughness */ + ssr_accum.a *= smoothstep(ssrMaxRoughness + 0.2, ssrMaxRoughness, roughness); + accumulate_light(ssr_accum.rgb, ssr_accum.a, spec_accum); + } + + /* If SSR contribution is not 1.0, blend with cubemaps */ + if (spec_accum.a < 1.0) { + fallback_cubemap(N, V, worldPosition, viewPosition, roughness, roughnessSquared, spec_accum); + } + + fragColor = vec4(spec_accum.rgb * speccol_roughness.rgb, 1.0); +} + +#endif diff --git a/source/blender/draw/engines/eevee/shaders/effect_subsurface_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_subsurface_frag.glsl new file mode 100644 index 00000000000..5ecf6323255 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_subsurface_frag.glsl @@ -0,0 +1,99 @@ + +/* Based on Separable SSS. by Jorge Jimenez and Diego Gutierrez */ + +#define MAX_SSS_SAMPLES 65 +layout(std140) uniform sssProfile { + vec4 kernel[MAX_SSS_SAMPLES]; + vec4 radii_max_radius; + int sss_samples; +}; + +uniform sampler2D depthBuffer; +uniform sampler2D sssData; +uniform sampler2D sssAlbedo; + +#ifndef UTIL_TEX +#define UTIL_TEX +uniform sampler2DArray utilTex; +#define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) +#endif /* UTIL_TEX */ + +layout(location = 0) out vec4 FragColor; +#ifdef RESULT_ACCUM +layout(location = 1) out vec4 sssColor; +#endif + +float get_view_z_from_depth(float depth) +{ + if (ProjectionMatrix[3][3] == 0.0) { + float d = 2.0 * depth - 1.0; + return -ProjectionMatrix[3][2] / (d + ProjectionMatrix[2][2]); + } + else { + return viewVecs[0].z + depth * viewVecs[1].z; + } +} + +#define LUT_SIZE 64 +#define M_PI_2 1.5707963267948966 /* pi/2 */ +#define M_2PI 6.2831853071795865 /* 2*pi */ + +void main(void) +{ + vec2 pixel_size = 1.0 / vec2(textureSize(depthBuffer, 0).xy); /* TODO precompute */ + vec2 uvs = gl_FragCoord.xy * pixel_size; + vec4 sss_data = texture(sssData, uvs).rgba; + float depth_view = get_view_z_from_depth(texture(depthBuffer, uvs).r); + + float rand = texelfetch_noise_tex(gl_FragCoord.xy).r; +#ifdef FIRST_PASS + float angle = M_2PI * rand + M_PI_2; + vec2 dir = vec2(1.0, 0.0); +#else /* SECOND_PASS */ + float angle = M_2PI * rand; + vec2 dir = vec2(0.0, 1.0); +#endif + vec2 dir_rand = vec2(cos(angle), sin(angle)); + + /* Compute kernel bounds in 2D. */ + float homcoord = ProjectionMatrix[2][3] * depth_view + ProjectionMatrix[3][3]; + vec2 scale = vec2(ProjectionMatrix[0][0], ProjectionMatrix[1][1]) * sss_data.aa / homcoord; + vec2 finalStep = scale * radii_max_radius.w; + finalStep *= 0.5; /* samples range -1..1 */ + + /* Center sample */ + vec3 accum = sss_data.rgb * kernel[0].rgb; + + for (int i = 1; i < sss_samples && i < MAX_SSS_SAMPLES; i++) { + vec2 sample_uv = uvs + kernel[i].a * finalStep * ((abs(kernel[i].a) > sssJitterThreshold) ? dir : dir_rand); + vec3 color = texture(sssData, sample_uv).rgb; + float sample_depth = texture(depthBuffer, sample_uv).r; + sample_depth = get_view_z_from_depth(sample_depth); + + /* Depth correction factor. */ + float depth_delta = depth_view - sample_depth; + float s = clamp(1.0 - exp(-(depth_delta * depth_delta) / (2.0 * sss_data.a)), 0.0, 1.0); + + /* Out of view samples. */ + if (any(lessThan(sample_uv, vec2(0.0))) || any(greaterThan(sample_uv, vec2(1.0)))) { + s = 1.0; + } + + accum += kernel[i].rgb * mix(color, sss_data.rgb, s); + } + +#ifdef FIRST_PASS + FragColor = vec4(accum, sss_data.a); +#else /* SECOND_PASS */ +# ifdef USE_SEP_ALBEDO +# ifdef RESULT_ACCUM + FragColor = vec4(accum, 1.0); + sssColor = texture(sssAlbedo, uvs); +# else + FragColor = vec4(accum * texture(sssAlbedo, uvs).rgb, 1.0); +# endif +# else + FragColor = vec4(accum, 1.0); +# endif +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/effect_temporal_aa.glsl b/source/blender/draw/engines/eevee/shaders/effect_temporal_aa.glsl new file mode 100644 index 00000000000..e118777f6c8 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_temporal_aa.glsl @@ -0,0 +1,111 @@ + +uniform sampler2D colorHistoryBuffer; +uniform sampler2D velocityBuffer; + +out vec4 FragColor; + +vec4 safe_color(vec4 c) +{ + /* Clamp to avoid black square artifacts if a pixel goes NaN. */ + return clamp(c, vec4(0.0), vec4(1e20)); /* 1e20 arbitrary. */ +} + +#ifdef USE_REPROJECTION + +/** + * Adapted from https://casual-effects.com/g3d/G3D10/data-files/shader/Film/Film_temporalAA.pix + * which is adapted from https://github.com/gokselgoktas/temporal-anti-aliasing/blob/master/Assets/Resources/Shaders/TemporalAntiAliasing.cginc + * which is adapted from https://github.com/playdeadgames/temporal + * Optimization by Stubbesaurus and epsilon adjustment to avoid division by zero. + * + * This can cause 3x3 blocks of color when there is a thin edge of a similar color that + * is varying in intensity. + */ +vec3 clip_to_aabb(vec3 color, vec3 minimum, vec3 maximum, vec3 average) +{ + /* note: only clips towards aabb center (but fast!) */ + vec3 center = 0.5 * (maximum + minimum); + vec3 extents = 0.5 * (maximum - minimum); + vec3 dist = color - center; + vec3 ts = abs(extents) / max(abs(dist), vec3(0.0001)); + float t = saturate(min_v3(ts)); + return center + dist * t; +} + +/** + * Vastly based on https://github.com/playdeadgames/temporal + */ +void main() +{ + ivec2 texel = ivec2(gl_FragCoord.xy); + float depth = texelFetch(depthBuffer, texel, 0).r; + vec2 motion = texelFetch(velocityBuffer, texel, 0).rg; + + /* Decode from unsigned normalized 16bit texture. */ + motion = motion * 2.0 - 1.0; + + /* Compute pixel position in previous frame. */ + vec2 screen_res = vec2(textureSize(colorBuffer, 0).xy); + vec2 uv = gl_FragCoord.xy / screen_res; + vec2 uv_history = uv - motion; + + ivec2 texel_history = ivec2(uv_history * screen_res); + vec4 color_history = textureLod(colorHistoryBuffer, uv_history, 0.0); + + /* Color bounding box clamping. 3x3 neighborhood. */ + vec4 c02 = texelFetchOffset(colorBuffer, texel, 0, ivec2(-1, 1)); + vec4 c12 = texelFetchOffset(colorBuffer, texel, 0, ivec2( 0, 1)); + vec4 c22 = texelFetchOffset(colorBuffer, texel, 0, ivec2( 1, 1)); + vec4 c01 = texelFetchOffset(colorBuffer, texel, 0, ivec2(-1, 0)); + vec4 c11 = texelFetchOffset(colorBuffer, texel, 0, ivec2( 0, 0)); + vec4 c21 = texelFetchOffset(colorBuffer, texel, 0, ivec2( 1, 0)); + vec4 c00 = texelFetchOffset(colorBuffer, texel, 0, ivec2(-1, -1)); + vec4 c10 = texelFetchOffset(colorBuffer, texel, 0, ivec2( 0, -1)); + vec4 c20 = texelFetchOffset(colorBuffer, texel, 0, ivec2( 1, -1)); + + vec4 color = c11; + + /* AABB minmax */ + vec4 min_col = min9(c02, c12, c22, c01, c11, c21, c00, c10, c20); + vec4 max_col = max9(c02, c12, c22, c01, c11, c21, c00, c10, c20); + vec4 avg_col = avg9(c02, c12, c22, c01, c11, c21, c00, c10, c20); + + /* bias the color aabb toward the center (rounding the shape) */ + vec4 min_center = min5(c12, c01, c11, c21, c10); + vec4 max_center = max5(c12, c01, c11, c21, c10); + vec4 avg_center = avg5(c12, c01, c11, c21, c10); + min_col = (min_col + min_center) * 0.5; + max_col = (max_col + max_center) * 0.5; + avg_col = (avg_col + avg_center) * 0.5; + + /* Clip color toward the center of the neighborhood colors AABB box. */ + color_history.rgb = clip_to_aabb(color_history.rgb, min_col.rgb, max_col.rgb, avg_col.rgb); + + /* Luminance weighting. */ + /* TODO correct luminance */ + float lum0 = dot(color.rgb, vec3(0.333)); + float lum1 = dot(color_history.rgb, vec3(0.333)); + float diff = abs(lum0 - lum1) / max(lum0, max(lum1, 0.2)); + float weight = 1.0 - diff; + float alpha = mix(0.04, 0.12, weight * weight); + + color_history = mix(color_history, color, alpha); + + bool out_of_view = any(greaterThanEqual(abs(uv_history - 0.5), vec2(0.5))); + color_history = (out_of_view) ? color : color_history; + + FragColor = safe_color(color_history); +} + +#else + +uniform float alpha; + +void main() +{ + ivec2 texel = ivec2(gl_FragCoord.xy); + vec4 color = texelFetch(colorBuffer, texel, 0); + vec4 color_history = texelFetch(colorHistoryBuffer, texel, 0); + FragColor = safe_color(mix(color_history, color, alpha)); +} +#endif diff --git a/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl b/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl new file mode 100644 index 00000000000..8324c25225c --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/effect_velocity_resolve_frag.glsl @@ -0,0 +1,22 @@ + +uniform mat4 currPersinv; +uniform mat4 pastPersmat; + +out vec2 outData; + +void main() +{ + /* Extract pixel motion vector from camera movement. */ + ivec2 texel = ivec2(gl_FragCoord.xy); + vec2 uv = gl_FragCoord.xy / vec2(textureSize(depthBuffer, 0).xy); + + float depth = texelFetch(depthBuffer, texel, 0).r; + + vec3 world_position = project_point(currPersinv, vec3(uv, depth) * 2.0 - 1.0); + vec2 uv_history = project_point(pastPersmat, world_position).xy * 0.5 + 0.5; + + outData = uv - uv_history; + + /* Encode to unsigned normalized 16bit texture. */ + outData = outData * 0.5 + 0.5; +} diff --git a/source/blender/draw/engines/eevee/shaders/irradiance_lib.glsl b/source/blender/draw/engines/eevee/shaders/irradiance_lib.glsl new file mode 100644 index 00000000000..132cc16fcbd --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/irradiance_lib.glsl @@ -0,0 +1,177 @@ + +uniform sampler2DArray irradianceGrid; + +#define IRRADIANCE_LIB + +#ifdef IRRADIANCE_CUBEMAP +struct IrradianceData { + vec3 color; +}; +#elif defined(IRRADIANCE_SH_L2) +struct IrradianceData { + vec3 shcoefs[9]; +}; +#else /* defined(IRRADIANCE_HL2) */ +struct IrradianceData { + vec3 cubesides[3]; +}; +#endif + +IrradianceData load_irradiance_cell(int cell, vec3 N) +{ + /* Keep in sync with diffuse_filter_probe() */ + +#if defined(IRRADIANCE_CUBEMAP) + + #define AMBIANT_CUBESIZE 8 + ivec2 cell_co = ivec2(AMBIANT_CUBESIZE); + int cell_per_row = textureSize(irradianceGrid, 0).x / cell_co.x; + cell_co.x *= cell % cell_per_row; + cell_co.y *= cell / cell_per_row; + + vec2 texelSize = 1.0 / vec2(AMBIANT_CUBESIZE); + + vec2 uvs = mapping_octahedron(N, texelSize); + uvs *= vec2(AMBIANT_CUBESIZE) / vec2(textureSize(irradianceGrid, 0)); + uvs += vec2(cell_co) / vec2(textureSize(irradianceGrid, 0)); + + IrradianceData ir; + ir.color = texture(irradianceGrid, vec3(uvs, 0.0)).rgb; + +#elif defined(IRRADIANCE_SH_L2) + + ivec2 cell_co = ivec2(3, 3); + int cell_per_row = textureSize(irradianceGrid, 0).x / cell_co.x; + cell_co.x *= cell % cell_per_row; + cell_co.y *= cell / cell_per_row; + + ivec3 ofs = ivec3(0, 1, 2); + + IrradianceData ir; + ir.shcoefs[0] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.xx, 0), 0).rgb; + ir.shcoefs[1] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.yx, 0), 0).rgb; + ir.shcoefs[2] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.zx, 0), 0).rgb; + ir.shcoefs[3] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.xy, 0), 0).rgb; + ir.shcoefs[4] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.yy, 0), 0).rgb; + ir.shcoefs[5] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.zy, 0), 0).rgb; + ir.shcoefs[6] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.xz, 0), 0).rgb; + ir.shcoefs[7] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.yz, 0), 0).rgb; + ir.shcoefs[8] = texelFetch(irradianceGrid, ivec3(cell_co + ofs.zz, 0), 0).rgb; + +#else /* defined(IRRADIANCE_HL2) */ + + ivec2 cell_co = ivec2(3, 2); + int cell_per_row = textureSize(irradianceGrid, 0).x / cell_co.x; + cell_co.x *= cell % cell_per_row; + cell_co.y *= cell / cell_per_row; + + ivec3 is_negative = ivec3(step(0.0, -N)); + + IrradianceData ir; + ir.cubesides[0] = irradiance_decode(texelFetch(irradianceGrid, ivec3(cell_co + ivec2(0, is_negative.x), 0), 0)); + ir.cubesides[1] = irradiance_decode(texelFetch(irradianceGrid, ivec3(cell_co + ivec2(1, is_negative.y), 0), 0)); + ir.cubesides[2] = irradiance_decode(texelFetch(irradianceGrid, ivec3(cell_co + ivec2(2, is_negative.z), 0), 0)); + +#endif + + return ir; +} + +float load_visibility_cell(int cell, vec3 L, float dist, float bias, float bleed_bias, float range) +{ + /* Keep in sync with diffuse_filter_probe() */ + ivec2 cell_co = ivec2(prbIrradianceVisSize); + ivec2 cell_per_row_col = textureSize(irradianceGrid, 0).xy / prbIrradianceVisSize; + cell_co.x *= (cell % cell_per_row_col.x); + cell_co.y *= (cell / cell_per_row_col.x) % cell_per_row_col.y; + float layer = 1.0 + float((cell / cell_per_row_col.x) / cell_per_row_col.y); + + vec2 texel_size = 1.0 / vec2(textureSize(irradianceGrid, 0).xy); + vec2 co = vec2(cell_co) * texel_size; + + vec2 uv = mapping_octahedron(-L, vec2(1.0 / float(prbIrradianceVisSize))); + uv *= vec2(prbIrradianceVisSize) * texel_size; + + vec4 data = texture(irradianceGrid, vec3(co + uv, layer)); + + /* Decoding compressed data */ + vec2 moments = visibility_decode(data, range); + + /* Doing chebishev test */ + float variance = abs(moments.x * moments.x - moments.y); + variance = max(variance, bias / 10.0); + + float d = dist - moments.x; + float p_max = variance / (variance + d * d); + + /* Increase contrast in the weight by squaring it */ + p_max *= p_max; + + /* Now reduce light-bleeding by removing the [0, x] tail and linearly rescaling (x, 1] */ + p_max = clamp((p_max - bleed_bias) / (1.0 - bleed_bias), 0.0, 1.0); + + return (dist <= moments.x) ? 1.0 : p_max; +} + +/* http://seblagarde.wordpress.com/2012/01/08/pi-or-not-to-pi-in-game-lighting-equation/ */ +vec3 spherical_harmonics_L1(vec3 N, vec3 shcoefs[4]) +{ + vec3 sh = vec3(0.0); + + sh += 0.282095 * shcoefs[0]; + + sh += -0.488603 * N.z * shcoefs[1]; + sh += 0.488603 * N.y * shcoefs[2]; + sh += -0.488603 * N.x * shcoefs[3]; + + return sh; +} + +vec3 spherical_harmonics_L2(vec3 N, vec3 shcoefs[9]) +{ + vec3 sh = vec3(0.0); + + sh += 0.282095 * shcoefs[0]; + + sh += -0.488603 * N.z * shcoefs[1]; + sh += 0.488603 * N.y * shcoefs[2]; + sh += -0.488603 * N.x * shcoefs[3]; + + sh += 1.092548 * N.x * N.z * shcoefs[4]; + sh += -1.092548 * N.z * N.y * shcoefs[5]; + sh += 0.315392 * (3.0 * N.y * N.y - 1.0) * shcoefs[6]; + sh += -1.092548 * N.x * N.y * shcoefs[7]; + sh += 0.546274 * (N.x * N.x - N.z * N.z) * shcoefs[8]; + + return sh; +} + +vec3 hl2_basis(vec3 N, vec3 cubesides[3]) +{ + vec3 irradiance = vec3(0.0); + + vec3 n_squared = N * N; + + irradiance += n_squared.x * cubesides[0]; + irradiance += n_squared.y * cubesides[1]; + irradiance += n_squared.z * cubesides[2]; + + return irradiance; +} + +vec3 compute_irradiance(vec3 N, IrradianceData ird) +{ +#if defined(IRRADIANCE_CUBEMAP) + return ird.color; +#elif defined(IRRADIANCE_SH_L2) + return spherical_harmonics_L2(N, ird.shcoefs); +#else /* defined(IRRADIANCE_HL2) */ + return hl2_basis(N, ird.cubesides); +#endif +} + +vec3 irradiance_from_cell_get(int cell, vec3 ir_dir) +{ + IrradianceData ir_data = load_irradiance_cell(cell, ir_dir); + return compute_irradiance(ir_dir, ir_data); +} diff --git a/source/blender/draw/engines/eevee/shaders/lamps_lib.glsl b/source/blender/draw/engines/eevee/shaders/lamps_lib.glsl new file mode 100644 index 00000000000..fb18af494b4 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lamps_lib.glsl @@ -0,0 +1,450 @@ + +uniform sampler2DArray shadowCubeTexture; +uniform sampler2DArray shadowCascadeTexture; + +#define LAMPS_LIB + +layout(std140) uniform shadow_block { + ShadowData shadows_data[MAX_SHADOW]; + ShadowCubeData shadows_cube_data[MAX_SHADOW_CUBE]; + ShadowCascadeData shadows_cascade_data[MAX_SHADOW_CASCADE]; +}; + +layout(std140) uniform light_block { + LightData lights_data[MAX_LIGHT]; +}; + +/* type */ +#define POINT 0.0 +#define SUN 1.0 +#define SPOT 2.0 +#define AREA_RECT 4.0 +/* Used to define the area lamp shape, doesn't directly correspond to a Blender lamp type. */ +#define AREA_ELLIPSE 100.0 + +#if defined(SHADOW_VSM) +#define ShadowSample vec2 +#define sample_cube(vec, id) texture_octahedron(shadowCubeTexture, vec4(vec, id)).rg +#define sample_cascade(vec, id) texture(shadowCascadeTexture, vec3(vec, id)).rg +#elif defined(SHADOW_ESM) +#define ShadowSample float +#define sample_cube(vec, id) texture_octahedron(shadowCubeTexture, vec4(vec, id)).r +#define sample_cascade(vec, id) texture(shadowCascadeTexture, vec3(vec, id)).r +#else +#define ShadowSample float +#define sample_cube(vec, id) texture_octahedron(shadowCubeTexture, vec4(vec, id)).r +#define sample_cascade(vec, id) texture(shadowCascadeTexture, vec3(vec, id)).r +#endif + +#if defined(SHADOW_VSM) +#define get_depth_delta(dist, s) (dist - s.x) +#else +#define get_depth_delta(dist, s) (dist - s) +#endif + +/* ----------------------------------------------------------- */ +/* ----------------------- Shadow tests ---------------------- */ +/* ----------------------------------------------------------- */ + +#if defined(SHADOW_VSM) + +float shadow_test(ShadowSample moments, float dist, ShadowData sd) +{ + float p = 0.0; + + if (dist <= moments.x) + p = 1.0; + + float variance = moments.y - (moments.x * moments.x); + variance = max(variance, sd.sh_bias / 10.0); + + float d = moments.x - dist; + float p_max = variance / (variance + d * d); + + /* Now reduce light-bleeding by removing the [0, x] tail and linearly rescaling (x, 1] */ + p_max = clamp((p_max - sd.sh_bleed) / (1.0 - sd.sh_bleed), 0.0, 1.0); + + return max(p, p_max); +} + +#elif defined(SHADOW_ESM) + +float shadow_test(ShadowSample z, float dist, ShadowData sd) +{ + return saturate(exp(sd.sh_exp * (z - dist + sd.sh_bias))); +} + +#else + +float shadow_test(ShadowSample z, float dist, ShadowData sd) +{ + return step(0, z - dist + sd.sh_bias); +} + +#endif + +/* ----------------------------------------------------------- */ +/* ----------------------- Shadow types ---------------------- */ +/* ----------------------------------------------------------- */ + +float shadow_cubemap(ShadowData sd, ShadowCubeData scd, float texid, vec3 W) +{ + vec3 cubevec = W - scd.position.xyz; + float dist = length(cubevec); + + cubevec /= dist; + + ShadowSample s = sample_cube(cubevec, texid); + return shadow_test(s, dist, sd); +} + +float evaluate_cascade(ShadowData sd, mat4 shadowmat, vec3 W, float range, float texid) +{ + vec4 shpos = shadowmat * vec4(W, 1.0); + float dist = shpos.z * range; + + ShadowSample s = sample_cascade(shpos.xy, texid); + float vis = shadow_test(s, dist, sd); + + /* If fragment is out of shadowmap range, do not occlude */ + if (shpos.z < 1.0 && shpos.z > 0.0) { + return vis; + } + else { + return 1.0; + } +} + +float shadow_cascade(ShadowData sd, int scd_id, float texid, vec3 W) +{ + vec4 view_z = vec4(dot(W - cameraPos, cameraForward)); + vec4 weights = smoothstep( + shadows_cascade_data[scd_id].split_end_distances, + shadows_cascade_data[scd_id].split_start_distances.yzwx, + view_z); + + weights.yzw -= weights.xyz; + + vec4 vis = vec4(1.0); + float range = abs(sd.sh_far - sd.sh_near); /* Same factor as in get_cascade_world_distance(). */ + + /* Branching using (weights > 0.0) is reaally slooow on intel so avoid it for now. */ + /* TODO OPTI: Only do 2 samples and blend. */ + vis.x = evaluate_cascade(sd, shadows_cascade_data[scd_id].shadowmat[0], W, range, texid + 0); + vis.y = evaluate_cascade(sd, shadows_cascade_data[scd_id].shadowmat[1], W, range, texid + 1); + vis.z = evaluate_cascade(sd, shadows_cascade_data[scd_id].shadowmat[2], W, range, texid + 2); + vis.w = evaluate_cascade(sd, shadows_cascade_data[scd_id].shadowmat[3], W, range, texid + 3); + + float weight_sum = dot(vec4(1.0), weights); + if (weight_sum > 0.9999) { + float vis_sum = dot(vec4(1.0), vis * weights); + return vis_sum / weight_sum; + } + else { + float vis_sum = dot(vec4(1.0), vis * step(0.001, weights)); + return mix(1.0, vis_sum, weight_sum); + } +} + +/* ----------------------------------------------------------- */ +/* --------------------- Light Functions --------------------- */ +/* ----------------------------------------------------------- */ + +/* From Frostbite PBR Course + * Distance based attenuation + * http://www.frostbite.com/wp-content/uploads/2014/11/course_notes_moving_frostbite_to_pbr.pdf */ +float distance_attenuation(float dist_sqr, float inv_sqr_influence) +{ + float factor = dist_sqr * inv_sqr_influence; + float fac = saturate(1.0 - factor * factor); + return fac * fac; +} + +float spot_attenuation(LightData ld, vec3 l_vector) +{ + float z = dot(ld.l_forward, l_vector.xyz); + vec3 lL = l_vector.xyz / z; + float x = dot(ld.l_right, lL) / ld.l_sizex; + float y = dot(ld.l_up, lL) / ld.l_sizey; + float ellipse = inversesqrt(1.0 + x * x + y * y); + float spotmask = smoothstep(0.0, 1.0, (ellipse - ld.l_spot_size) / ld.l_spot_blend); + return spotmask; +} + +float light_visibility(LightData ld, vec3 W, +#ifndef VOLUMETRICS + vec3 viewPosition, + vec3 viewNormal, +#endif + vec4 l_vector) +{ + float vis = 1.0; + + if (ld.l_type == SPOT) { + vis *= spot_attenuation(ld, l_vector.xyz); + } + if (ld.l_type >= SPOT) { + vis *= step(0.0, -dot(l_vector.xyz, ld.l_forward)); + } + if (ld.l_type != SUN) { + vis *= distance_attenuation(l_vector.w * l_vector.w, ld.l_influence); + } + +#if !defined(VOLUMETRICS) || defined(VOLUME_SHADOW) + /* shadowing */ + if (ld.l_shadowid >= 0.0 && vis > 0.001) { + ShadowData data = shadows_data[int(ld.l_shadowid)]; + + if (ld.l_type == SUN) { + vis *= shadow_cascade( + data, int(data.sh_data_start), + data.sh_tex_start, W); + } + else { + vis *= shadow_cubemap( + data, shadows_cube_data[int(data.sh_data_start)], + data.sh_tex_start, W); + } + +#ifndef VOLUMETRICS + /* Only compute if not already in shadow. */ + if (data.sh_contact_dist > 0.0) { + vec4 L = (ld.l_type != SUN) ? l_vector : vec4(-ld.l_forward, 1.0); + float trace_distance = (ld.l_type != SUN) ? min(data.sh_contact_dist, l_vector.w) : data.sh_contact_dist; + + vec3 T, B; + make_orthonormal_basis(L.xyz / L.w, T, B); + + vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy); + rand.zw *= fast_sqrt(rand.y) * data.sh_contact_spread; + + /* We use the full l_vector.xyz so that the spread is minimize + * if the shading point is further away from the light source */ + vec3 ray_dir = L.xyz + T * rand.z + B * rand.w; + ray_dir = transform_direction(ViewMatrix, ray_dir); + ray_dir = normalize(ray_dir); + + vec3 ray_ori = viewPosition; + + if (dot(viewNormal, ray_dir) <= 0.0) { + return vis; + } + + float bias = 0.5; /* Constant Bias */ + bias += 1.0 - abs(dot(viewNormal, ray_dir)); /* Angle dependent bias */ + bias *= gl_FrontFacing ? data.sh_contact_offset : -data.sh_contact_offset; + + vec3 nor_bias = viewNormal * bias; + ray_ori += nor_bias; + + ray_dir *= trace_distance; + ray_dir -= nor_bias; + + vec3 hit_pos = raycast(-1, ray_ori, ray_dir, data.sh_contact_thickness, rand.x, + 0.1, 0.001, false); + + if (hit_pos.z > 0.0) { + hit_pos = get_view_space_from_depth(hit_pos.xy, hit_pos.z); + float hit_dist = distance(viewPosition, hit_pos); + float dist_ratio = hit_dist / trace_distance; + return vis * saturate(dist_ratio * dist_ratio * dist_ratio); + } + } +#endif + } +#endif + + return vis; +} + +#ifdef USE_LTC +float light_diffuse(LightData ld, vec3 N, vec3 V, vec4 l_vector) +{ + if (ld.l_type == AREA_RECT) { + vec3 corners[4]; + corners[0] = normalize((l_vector.xyz + ld.l_right * -ld.l_sizex) + ld.l_up * ld.l_sizey); + corners[1] = normalize((l_vector.xyz + ld.l_right * -ld.l_sizex) + ld.l_up * -ld.l_sizey); + corners[2] = normalize((l_vector.xyz + ld.l_right * ld.l_sizex) + ld.l_up * -ld.l_sizey); + corners[3] = normalize((l_vector.xyz + ld.l_right * ld.l_sizex) + ld.l_up * ld.l_sizey); + + return ltc_evaluate_quad(corners, N); + } + else if (ld.l_type == AREA_ELLIPSE) { + vec3 points[3]; + points[0] = (l_vector.xyz + ld.l_right * -ld.l_sizex) + ld.l_up * -ld.l_sizey; + points[1] = (l_vector.xyz + ld.l_right * ld.l_sizex) + ld.l_up * -ld.l_sizey; + points[2] = (l_vector.xyz + ld.l_right * ld.l_sizex) + ld.l_up * ld.l_sizey; + + return ltc_evaluate_disk(N, V, mat3(1.0), points); + } + else { + float radius = ld.l_radius; + radius /= (ld.l_type == SUN) ? 1.0 : l_vector.w; + vec3 L = (ld.l_type == SUN) ? -ld.l_forward : (l_vector.xyz / l_vector.w); + + return ltc_evaluate_disk_simple(radius, dot(N, L)); + } +} + +float light_specular(LightData ld, vec4 ltc_mat, vec3 N, vec3 V, vec4 l_vector) +{ + if (ld.l_type == AREA_RECT) { + vec3 corners[4]; + corners[0] = (l_vector.xyz + ld.l_right * -ld.l_sizex) + ld.l_up * ld.l_sizey; + corners[1] = (l_vector.xyz + ld.l_right * -ld.l_sizex) + ld.l_up * -ld.l_sizey; + corners[2] = (l_vector.xyz + ld.l_right * ld.l_sizex) + ld.l_up * -ld.l_sizey; + corners[3] = (l_vector.xyz + ld.l_right * ld.l_sizex) + ld.l_up * ld.l_sizey; + + ltc_transform_quad(N, V, ltc_matrix(ltc_mat), corners); + + return ltc_evaluate_quad(corners, vec3(0.0, 0.0, 1.0)); + } + else { + bool is_ellipse = (ld.l_type == AREA_ELLIPSE); + float radius_x = is_ellipse ? ld.l_sizex : ld.l_radius; + float radius_y = is_ellipse ? ld.l_sizey : ld.l_radius; + + vec3 L = (ld.l_type == SUN) ? -ld.l_forward : l_vector.xyz; + vec3 Px = ld.l_right; + vec3 Py = ld.l_up; + + if (ld.l_type == SPOT || ld.l_type == POINT) { + make_orthonormal_basis(l_vector.xyz / l_vector.w, Px, Py); + } + + vec3 points[3]; + points[0] = (L + Px * -radius_x) + Py * -radius_y; + points[1] = (L + Px * radius_x) + Py * -radius_y; + points[2] = (L + Px * radius_x) + Py * radius_y; + + return ltc_evaluate_disk(N, V, ltc_matrix(ltc_mat), points); + } +} +#endif + +#define MAX_SSS_SAMPLES 65 +#define SSS_LUT_SIZE 64.0 +#define SSS_LUT_SCALE ((SSS_LUT_SIZE - 1.0) / float(SSS_LUT_SIZE)) +#define SSS_LUT_BIAS (0.5 / float(SSS_LUT_SIZE)) + +#ifdef USE_TRANSLUCENCY +layout(std140) uniform sssProfile { + vec4 kernel[MAX_SSS_SAMPLES]; + vec4 radii_max_radius; + int sss_samples; +}; + +uniform sampler1D sssTexProfile; + +vec3 sss_profile(float s) { + s /= radii_max_radius.w; + return texture(sssTexProfile, saturate(s) * SSS_LUT_SCALE + SSS_LUT_BIAS).rgb; +} +#endif + +vec3 light_translucent(LightData ld, vec3 W, vec3 N, vec4 l_vector, float scale) +{ +#if !defined(USE_TRANSLUCENCY) || defined(VOLUMETRICS) + return vec3(0.0); +#else + vec3 vis = vec3(1.0); + + if (ld.l_type == SPOT) { + vis *= spot_attenuation(ld, l_vector.xyz); + } + if (ld.l_type >= SPOT) { + vis *= step(0.0, -dot(l_vector.xyz, ld.l_forward)); + } + if (ld.l_type != SUN) { + vis *= distance_attenuation(l_vector.w * l_vector.w, ld.l_influence); + } + + /* Only shadowed light can produce translucency */ + if (ld.l_shadowid >= 0.0 && vis.x > 0.001) { + ShadowData data = shadows_data[int(ld.l_shadowid)]; + float delta; + + vec4 L = (ld.l_type != SUN) ? l_vector : vec4(-ld.l_forward, 1.0); + + vec3 T, B; + make_orthonormal_basis(L.xyz / L.w, T, B); + + vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy); + rand.zw *= fast_sqrt(rand.y) * data.sh_blur; + + /* We use the full l_vector.xyz so that the spread is minimize + * if the shading point is further away from the light source */ + W = W + T * rand.z + B * rand.w; + + if (ld.l_type == SUN) { + int scd_id = int(data.sh_data_start); + vec4 view_z = vec4(dot(W - cameraPos, cameraForward)); + + vec4 weights = step(shadows_cascade_data[scd_id].split_end_distances, view_z); + float id = abs(4.0 - dot(weights, weights)); + + if (id > 3.0) { + return vec3(0.0); + } + + float range = abs(data.sh_far - data.sh_near); /* Same factor as in get_cascade_world_distance(). */ + + vec4 shpos = shadows_cascade_data[scd_id].shadowmat[int(id)] * vec4(W, 1.0); + float dist = shpos.z * range; + + if (shpos.z > 1.0 || shpos.z < 0.0) { + return vec3(0.0); + } + + ShadowSample s = sample_cascade(shpos.xy, data.sh_tex_start + id); + delta = get_depth_delta(dist, s); + } + else { + vec3 cubevec = W - shadows_cube_data[int(data.sh_data_start)].position.xyz; + float dist = length(cubevec); + cubevec /= dist; + + ShadowSample s = sample_cube(cubevec, data.sh_tex_start); + delta = get_depth_delta(dist, s); + } + + /* XXX : Removing Area Power. */ + /* TODO : put this out of the shader. */ + float falloff; + if (ld.l_type == AREA_RECT || ld.l_type == AREA_ELLIPSE) { + vis *= (ld.l_sizex * ld.l_sizey * 4.0 * M_PI) * (1.0 / 80.0); + if (ld.l_type == AREA_ELLIPSE) { + vis *= M_PI * 0.25; + } + vis *= 0.3 * 20.0 * max(0.0, dot(-ld.l_forward, l_vector.xyz / l_vector.w)); /* XXX ad hoc, empirical */ + vis /= (l_vector.w * l_vector.w); + falloff = dot(N, l_vector.xyz / l_vector.w); + } + else if (ld.l_type == SUN) { + vis /= 1.0f + (ld.l_radius * ld.l_radius * 0.5f); + vis *= ld.l_radius * ld.l_radius * M_PI; /* Removing area light power*/ + vis *= M_2PI * 0.78; /* Matching cycles with point light. */ + vis *= 0.082; /* XXX ad hoc, empirical */ + falloff = dot(N, -ld.l_forward); + } + else { + vis *= (4.0 * ld.l_radius * ld.l_radius) * (1.0 /10.0); + vis *= 1.5; /* XXX ad hoc, empirical */ + vis /= (l_vector.w * l_vector.w); + falloff = dot(N, l_vector.xyz / l_vector.w); + } + // vis *= M_1_PI; /* Normalize */ + + /* Applying profile */ + vis *= sss_profile(abs(delta) / scale); + + /* No transmittance at grazing angle (hide artifacts) */ + vis *= saturate(falloff * 2.0); + } + else { + vis = vec3(0.0); + } + + return vis; +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_frag.glsl new file mode 100644 index 00000000000..5a72244cfbe --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_frag.glsl @@ -0,0 +1,18 @@ + +flat in int pid; +in vec2 quadCoord; + +out vec4 FragColor; + +void main() +{ + float dist_sqr = dot(quadCoord, quadCoord); + + /* Discard outside the circle. */ + if (dist_sqr > 1.0) + discard; + + vec3 view_nor = vec3(quadCoord, sqrt(max(0.0, 1.0 - dist_sqr))); + vec3 world_ref = mat3(ViewMatrixInverse) * reflect(vec3(0.0, 0.0, -1.0), view_nor); + FragColor = vec4(textureLod_octahedron(probeCubes, vec4(world_ref, pid), 0.0, prbLodCubeMax).rgb, 1.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_vert.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_vert.glsl new file mode 100644 index 00000000000..b327878b63d --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_cube_display_vert.glsl @@ -0,0 +1,43 @@ + +/* XXX TODO fix code duplication */ +struct CubeData { + vec4 position_type; + vec4 attenuation_fac_type; + mat4 influencemat; + mat4 parallaxmat; +}; + +layout(std140) uniform probe_block { + CubeData probes_data[MAX_PROBE]; +}; + +uniform float sphere_size; +uniform vec3 screen_vecs[2]; + +flat out int pid; +out vec2 quadCoord; + +const vec2 pos[6] = vec2[6]( + vec2(-1.0, -1.0), + vec2( 1.0, -1.0), + vec2(-1.0, 1.0), + + vec2( 1.0, -1.0), + vec2( 1.0, 1.0), + vec2(-1.0, 1.0) +); + +void main() +{ + pid = 1 + (gl_VertexID / 6); /* +1 for the world */ + int vert_id = gl_VertexID % 6; + + quadCoord = pos[vert_id]; + + vec3 ws_location = probes_data[pid].position_type.xyz; + vec3 screen_pos = screen_vecs[0] * quadCoord.x + screen_vecs[1] * quadCoord.y; + ws_location += screen_pos * sphere_size; + + gl_Position = ViewProjectionMatrix * vec4(ws_location, 1.0); + gl_Position.z += 0.0001; /* Small bias to let the icon draw without zfighting */ +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_filter_diffuse_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_filter_diffuse_frag.glsl new file mode 100644 index 00000000000..7cf4259a938 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_filter_diffuse_frag.glsl @@ -0,0 +1,197 @@ + +uniform samplerCube probeHdr; +uniform int probeSize; +uniform float lodFactor; +uniform float lodMax; +uniform float intensityFac; + +in vec3 worldPosition; + +out vec4 FragColor; + +#define M_4PI 12.5663706143591729 + +const mat3 CUBE_ROTATIONS[6] = mat3[]( + mat3(vec3( 0.0, 0.0, -1.0), + vec3( 0.0, -1.0, 0.0), + vec3(-1.0, 0.0, 0.0)), + mat3(vec3( 0.0, 0.0, 1.0), + vec3( 0.0, -1.0, 0.0), + vec3( 1.0, 0.0, 0.0)), + mat3(vec3( 1.0, 0.0, 0.0), + vec3( 0.0, 0.0, 1.0), + vec3( 0.0, -1.0, 0.0)), + mat3(vec3( 1.0, 0.0, 0.0), + vec3( 0.0, 0.0, -1.0), + vec3( 0.0, 1.0, 0.0)), + mat3(vec3( 1.0, 0.0, 0.0), + vec3( 0.0, -1.0, 0.0), + vec3( 0.0, 0.0, -1.0)), + mat3(vec3(-1.0, 0.0, 0.0), + vec3( 0.0, -1.0, 0.0), + vec3( 0.0, 0.0, 1.0))); + +vec3 get_cubemap_vector(vec2 co, int face) +{ + return normalize(CUBE_ROTATIONS[face] * vec3(co * 2.0 - 1.0, 1.0)); +} + +float area_element(float x, float y) +{ + return atan(x * y, sqrt(x * x + y * y + 1)); +} + +float texel_solid_angle(vec2 co, float halfpix) +{ + vec2 v1 = (co - vec2(halfpix)) * 2.0 - 1.0; + vec2 v2 = (co + vec2(halfpix)) * 2.0 - 1.0; + + return area_element(v1.x, v1.y) - area_element(v1.x, v2.y) - area_element(v2.x, v1.y) + area_element(v2.x, v2.y); +} + +vec3 octahedral_to_cubemap_proj(vec2 co) +{ + co = co * 2.0 - 1.0; + + vec2 abs_co = abs(co); + vec3 v = vec3(co, 1.0 - (abs_co.x + abs_co.y)); + + if ( abs_co.x + abs_co.y > 1.0 ) { + v.xy = (abs(co.yx) - 1.0) * -sign(co.xy); + } + + return v; +} + +void main() +{ +#if defined(IRRADIANCE_SH_L2) + float pixstep = 1.0 / probeSize; + float halfpix = pixstep / 2.0; + + /* Downside: leaks negative values, very bandwidth consuming */ + int comp = int(gl_FragCoord.x) % 3 + (int(gl_FragCoord.y) % 3) * 3; + + float weight_accum = 0.0; + vec3 sh = vec3(0.0); + + for (int face = 0; face < 6; ++face) { + for (float x = halfpix; x < 1.0; x += pixstep) { + for (float y = halfpix; y < 1.0; y += pixstep) { + float weight, coef; + vec2 facecoord = vec2(x,y); + vec3 cubevec = get_cubemap_vector(facecoord, face); + + if (comp == 0) { + coef = 0.282095; + } + else if (comp == 1) { + coef = -0.488603 * cubevec.z * 2.0 / 3.0; + } + else if (comp == 2) { + coef = 0.488603 * cubevec.y * 2.0 / 3.0; + } + else if (comp == 3) { + coef = -0.488603 * cubevec.x * 2.0 / 3.0; + } + else if (comp == 4) { + coef = 1.092548 * cubevec.x * cubevec.z * 1.0 / 4.0; + } + else if (comp == 5) { + coef = -1.092548 * cubevec.z * cubevec.y * 1.0 / 4.0; + } + else if (comp == 6) { + coef = 0.315392 * (3.0 * cubevec.y * cubevec.y - 1.0) * 1.0 / 4.0; + } + else if (comp == 7) { + coef = 1.092548 * cubevec.x * cubevec.y * 1.0 / 4.0; + } + else { /* (comp == 8) */ + coef = 0.546274 * (cubevec.x * cubevec.x - cubevec.z * cubevec.z) * 1.0 / 4.0; + } + + weight = texel_solid_angle(facecoord, halfpix); + + vec4 sample = textureLod(probeHdr, cubevec, lodMax); + sh += sample.rgb * coef * weight; + weight_accum += weight; + } + } + } + sh *= M_4PI / weight_accum; + + FragColor = vec4(sh, 1.0); +#else +#if defined(IRRADIANCE_CUBEMAP) + /* Downside: Need lots of memory for storage, distortion due to octahedral mapping */ + const vec2 map_size = vec2(16.0); + const vec2 texelSize = 1.0 / map_size; + vec2 uvs = mod(gl_FragCoord.xy, map_size) * texelSize; + const float paddingSize = 1.0; + + /* Add a N pixel border to ensure filtering is correct + * for N mipmap levels. */ + uvs = (uvs - texelSize * paddingSize) / (1.0 - 2.0 * texelSize * paddingSize); + + /* edge mirroring : only mirror if directly adjacent + * (not diagonally adjacent) */ + vec2 m = abs(uvs - 0.5) + 0.5; + vec2 f = floor(m); + if (f.x - f.y != 0.0) { + uvs = 1.0 - uvs; + } + + /* clamp to [0-1] */ + uvs = fract(uvs); + + /* get cubemap vector */ + vec3 cubevec = octahedral_to_cubemap_proj(uvs); + +#elif defined(IRRADIANCE_HL2) + /* Downside: very very low resolution (6 texels), bleed lighting because of interpolation */ + int x = int(gl_FragCoord.x) % 3; + int y = int(gl_FragCoord.y) % 2; + + vec3 cubevec = vec3(1.0, 0.0, 0.0); + + if (x == 1) { + cubevec = cubevec.yxy; + } + else if (x == 2) { + cubevec = cubevec.yyx; + } + + if (y == 1) { + cubevec = -cubevec; + } +#endif + + vec3 N, T, B, V; + + N = normalize(cubevec); + + make_orthonormal_basis(N, T, B); /* Generate tangent space */ + + /* Integrating Envmap */ + float weight = 0.0; + vec3 out_radiance = vec3(0.0); + for (float i = 0; i < sampleCount; i++) { + vec3 L = sample_hemisphere(i, N, T, B); /* Microfacet normal */ + float NL = dot(N, L); + + if (NL > 0.0) { + /* Coarse Approximation of the mapping distortion + * Unit Sphere -> Cubemap Face */ + const float dist = 4.0 * M_PI / 6.0; + float pdf = pdf_hemisphere(); + /* http://http.developer.nvidia.com/GPUGems3/gpugems3_ch20.html : Equation 13 */ + float lod = clamp(lodFactor - 0.5 * log2(pdf * dist), 0.0, lodMax) ; + + out_radiance += textureLod(probeHdr, L, lod).rgb * NL; + weight += NL; + } + } + + FragColor = irradiance_encode(intensityFac * out_radiance / weight); +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_filter_glossy_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_filter_glossy_frag.glsl new file mode 100644 index 00000000000..fdfee54f368 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_filter_glossy_frag.glsl @@ -0,0 +1,98 @@ + +uniform samplerCube probeHdr; +uniform float roughnessSquared; +uniform float texelSize; +uniform float lodFactor; +uniform float lodMax; +uniform float paddingSize; +uniform float intensityFac; +uniform float fireflyFactor; + +in vec3 worldPosition; + +out vec4 FragColor; + +float brightness(vec3 c) +{ + return max(max(c.r, c.g), c.b); +} + +vec3 octahedral_to_cubemap_proj(vec2 co) +{ + co = co * 2.0 - 1.0; + + vec2 abs_co = abs(co); + vec3 v = vec3(co, 1.0 - (abs_co.x + abs_co.y)); + + if ( abs_co.x + abs_co.y > 1.0 ) { + v.xy = (abs(co.yx) - 1.0) * -sign(co.xy); + } + + return v; +} + +void main() { + vec2 uvs = gl_FragCoord.xy * texelSize; + + /* Add a N pixel border to ensure filtering is correct + * for N mipmap levels. */ + uvs = (uvs - paddingSize) / (1.0 - 2.0 * paddingSize); + + /* edge mirroring : only mirror if directly adjacent + * (not diagonally adjacent) */ + vec2 m = abs(uvs - 0.5) + 0.5; + vec2 f = floor(m); + if (f.x - f.y != 0.0) { + uvs = 1.0 - uvs; + } + + /* clamp to [0-1] */ + uvs = fract(uvs); + + /* get cubemap vector */ + vec3 cubevec = octahedral_to_cubemap_proj(uvs); + + vec3 N, T, B, V; + + vec3 R = normalize(cubevec); + + /* Isotropic assumption */ + N = V = R; + + make_orthonormal_basis(N, T, B); /* Generate tangent space */ + + /* Noise to dither the samples */ + /* Note : ghosting is better looking than noise. */ + // setup_noise(); + + /* Integrating Envmap */ + float weight = 0.0; + vec3 out_radiance = vec3(0.0); + for (float i = 0; i < sampleCount; i++) { + vec3 H = sample_ggx(i, roughnessSquared, N, T, B); /* Microfacet normal */ + vec3 L = -reflect(V, H); + float NL = dot(N, L); + + if (NL > 0.0) { + float NH = max(1e-8, dot(N, H)); /* cosTheta */ + + /* Coarse Approximation of the mapping distortion + * Unit Sphere -> Cubemap Face */ + const float dist = 4.0 * M_PI / 6.0; + float pdf = pdf_ggx_reflect(NH, roughnessSquared); + /* http://http.developer.nvidia.com/GPUGems3/gpugems3_ch20.html : Equation 13 */ + float lod = clamp(lodFactor - 0.5 * log2(pdf * dist), 0.0, lodMax) ; + + vec3 l_col = textureLod(probeHdr, L, lod).rgb; + + /* Clamped brightness. */ + float luma = max(1e-8, brightness(l_col)); + l_col *= 1.0 - max(0.0, luma - fireflyFactor) / luma; + + out_radiance += l_col * NL; + weight += NL; + } + } + + FragColor = vec4(intensityFac * out_radiance / weight, 1.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_filter_visibility_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_filter_visibility_frag.glsl new file mode 100644 index 00000000000..083d2313337 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_filter_visibility_frag.glsl @@ -0,0 +1,87 @@ + +uniform samplerCube probeDepth; +uniform int outputSize; +uniform float lodFactor; +uniform float storedTexelSize; +uniform float lodMax; +uniform float nearClip; +uniform float farClip; +uniform float visibilityRange; +uniform float visibilityBlur; + +out vec4 FragColor; + +vec3 octahedral_to_cubemap_proj(vec2 co) +{ + co = co * 2.0 - 1.0; + + vec2 abs_co = abs(co); + vec3 v = vec3(co, 1.0 - (abs_co.x + abs_co.y)); + + if ( abs_co.x + abs_co.y > 1.0 ) { + v.xy = (abs(co.yx) - 1.0) * -sign(co.xy); + } + + return v; +} + +float linear_depth(float z) +{ + return (nearClip * farClip) / (z * (nearClip - farClip) + farClip); +} + +float get_world_distance(float depth, vec3 cos) +{ + float is_background = step(1.0, depth); + depth = linear_depth(depth); + depth += 1e1 * is_background; + cos = normalize(abs(cos)); + float cos_vec = max(cos.x, max(cos.y, cos.z)); + return depth / cos_vec; +} + +void main() +{ + ivec2 texel = ivec2(gl_FragCoord.xy) % ivec2(outputSize); + + vec3 cos; + + cos.xy = (vec2(texel) + 0.5) * storedTexelSize; + + /* add a 2 pixel border to ensure filtering is correct */ + cos.xy = (cos.xy - storedTexelSize) / (1.0 - 2.0 * storedTexelSize); + + float pattern = 1.0; + + /* edge mirroring : only mirror if directly adjacent + * (not diagonally adjacent) */ + vec2 m = abs(cos.xy - 0.5) + 0.5; + vec2 f = floor(m); + if (f.x - f.y != 0.0) { + cos.xy = 1.0 - cos.xy; + } + + /* clamp to [0-1] */ + cos.xy = fract(cos.xy); + + /* get cubemap vector */ + cos = normalize(octahedral_to_cubemap_proj(cos.xy)); + + vec3 T, B; + make_orthonormal_basis(cos, T, B); /* Generate tangent space */ + + vec2 accum = vec2(0.0); + + for (float i = 0; i < sampleCount; i++) { + vec3 sample = sample_cone(i, M_PI_2 * visibilityBlur, cos, T, B); + float depth = texture(probeDepth, sample).r; + depth = get_world_distance(depth, sample); + accum += vec2(depth, depth * depth); + } + + accum *= invSampleCount; + accum = abs(accum); + + /* Encode to normalized RGBA 8 */ + FragColor = visibility_encode(accum, visibilityRange); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_geom.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_geom.glsl new file mode 100644 index 00000000000..2ce37d867b7 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_geom.glsl @@ -0,0 +1,34 @@ + +layout(triangles) in; +layout(triangle_strip, max_vertices=3) out; + +uniform int Layer; + +in vec4 vPos[]; +flat in int face[]; +flat out int fFace; + +out vec3 worldPosition; +out vec3 viewPosition; /* Required. otherwise generate linking error. */ +out vec3 worldNormal; /* Required. otherwise generate linking error. */ +out vec3 viewNormal; /* Required. otherwise generate linking error. */ + +const vec3 maj_axes[6] = vec3[6](vec3(1.0, 0.0, 0.0), vec3(-1.0, 0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, -1.0, 0.0), vec3( 0.0, 0.0, 1.0), vec3( 0.0, 0.0, -1.0)); +const vec3 x_axis[6] = vec3[6](vec3(0.0, 0.0, -1.0), vec3( 0.0, 0.0, 1.0), vec3(1.0, 0.0, 0.0), vec3(1.0, 0.0, 0.0), vec3( 1.0, 0.0, 0.0), vec3(-1.0, 0.0, 0.0)); +const vec3 y_axis[6] = vec3[6](vec3(0.0, -1.0, 0.0), vec3( 0.0, -1.0, 0.0), vec3(0.0, 0.0, 1.0), vec3(0.0, 0.0, -1.0), vec3( 0.0, -1.0, 0.0), vec3( 0.0, -1.0, 0.0)); + +void main() { + fFace = face[0]; + gl_Layer = Layer + fFace; + + for (int v = 0; v < 3; ++v) { + gl_Position = vPos[v]; + worldPosition = x_axis[fFace] * vPos[v].x + y_axis[fFace] * vPos[v].y + maj_axes[fFace]; +#ifdef ATTRIB + pass_attrib(v); +#endif + EmitVertex(); + } + + EndPrimitive(); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_grid_display_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_grid_display_frag.glsl new file mode 100644 index 00000000000..fd8eb157aa5 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_grid_display_frag.glsl @@ -0,0 +1,19 @@ + +flat in int cellOffset; +in vec2 quadCoord; + +out vec4 FragColor; + +void main() +{ + float dist_sqr = dot(quadCoord, quadCoord); + + /* Discard outside the circle. */ + if (dist_sqr > 1.0) + discard; + + vec3 view_nor = vec3(quadCoord, sqrt(max(0.0, 1.0 - dist_sqr))); + vec3 world_nor = mat3(ViewMatrixInverse) * view_nor; + IrradianceData ir_data = load_irradiance_cell(cellOffset, world_nor); + FragColor = vec4(compute_irradiance(world_nor, ir_data), 1.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_grid_display_vert.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_grid_display_vert.glsl new file mode 100644 index 00000000000..7a92b55e530 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_grid_display_vert.glsl @@ -0,0 +1,49 @@ + +uniform float sphere_size; +uniform int offset; +uniform ivec3 grid_resolution; +uniform vec3 corner; +uniform vec3 increment_x; +uniform vec3 increment_y; +uniform vec3 increment_z; +uniform vec3 screen_vecs[2]; + +flat out int cellOffset; +out vec2 quadCoord; + +const vec2 pos[6] = vec2[6]( + vec2(-1.0, -1.0), + vec2( 1.0, -1.0), + vec2(-1.0, 1.0), + + vec2( 1.0, -1.0), + vec2( 1.0, 1.0), + vec2(-1.0, 1.0) +); + +void main() +{ + int cell_id = gl_VertexID / 6; + int vert_id = gl_VertexID % 6; + + vec3 ls_cell_location; + /* Keep in sync with update_irradiance_probe */ + ls_cell_location.z = float(cell_id % grid_resolution.z); + ls_cell_location.y = float((cell_id / grid_resolution.z) % grid_resolution.y); + ls_cell_location.x = float(cell_id / (grid_resolution.z * grid_resolution.y)); + + cellOffset = offset + cell_id; + + vec3 ws_cell_location = corner + + (increment_x * ls_cell_location.x + + increment_y * ls_cell_location.y + + increment_z * ls_cell_location.z); + + + quadCoord = pos[vert_id]; + vec3 screen_pos = screen_vecs[0] * quadCoord.x + screen_vecs[1] * quadCoord.y; + ws_cell_location += screen_pos * sphere_size; + + gl_Position = ViewProjectionMatrix * vec4(ws_cell_location , 1.0); + gl_Position.z += 0.0001; /* Small bias to let the icon draw without zfighting */ +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_grid_fill_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_grid_fill_frag.glsl new file mode 100644 index 00000000000..ced8e7f4f01 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_grid_fill_frag.glsl @@ -0,0 +1,20 @@ +uniform sampler2DArray irradianceGrid; + +out vec4 FragColor; + +void main() +{ +#if defined(IRRADIANCE_SH_L2) + const ivec2 data_size = ivec2(3, 3); +#elif defined(IRRADIANCE_CUBEMAP) + const ivec2 data_size = ivec2(8, 8); +#elif defined(IRRADIANCE_HL2) + const ivec2 data_size = ivec2(3, 2); +#endif + ivec2 coord = ivec2(gl_FragCoord.xy) % data_size; + FragColor = texelFetch(irradianceGrid, ivec3(coord, 0), 0); + + if (any(greaterThanEqual(ivec2(gl_FragCoord.xy), data_size))) { + FragColor = vec4(0.0, 0.0, 0.0, 1.0); + } +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_lib.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_lib.glsl new file mode 100644 index 00000000000..a991e640a79 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_lib.glsl @@ -0,0 +1,304 @@ +/* ----------- Uniforms --------- */ + +uniform sampler2DArray probePlanars; +uniform sampler2DArray probeCubes; + +/* ----------- Structures --------- */ + +struct CubeData { + vec4 position_type; + vec4 attenuation_fac_type; + mat4 influencemat; + mat4 parallaxmat; +}; + +#define PROBE_PARALLAX_BOX 1.0 +#define PROBE_ATTENUATION_BOX 1.0 + +#define p_position position_type.xyz +#define p_parallax_type position_type.w +#define p_atten_fac attenuation_fac_type.x +#define p_atten_type attenuation_fac_type.y + +struct PlanarData { + vec4 plane_equation; + vec4 clip_vec_x_fade_scale; + vec4 clip_vec_y_fade_bias; + vec4 clip_edges; + vec4 facing_scale_bias; + mat4 reflectionmat; /* transform world space into reflection texture space */ + mat4 unused; +}; + +#define pl_plane_eq plane_equation +#define pl_normal plane_equation.xyz +#define pl_facing_scale facing_scale_bias.x +#define pl_facing_bias facing_scale_bias.y +#define pl_fade_scale clip_vec_x_fade_scale.w +#define pl_fade_bias clip_vec_y_fade_bias.w +#define pl_clip_pos_x clip_vec_x_fade_scale.xyz +#define pl_clip_pos_y clip_vec_y_fade_bias.xyz +#define pl_clip_edges clip_edges + +struct GridData { + mat4 localmat; + ivec4 resolution_offset; + vec4 ws_corner_atten_scale; /* world space corner position */ + vec4 ws_increment_x_atten_bias; /* world space vector between 2 opposite cells */ + vec4 ws_increment_y_lvl_bias; + vec4 ws_increment_z; + vec4 vis_bias_bleed_range; +}; + +#define g_corner ws_corner_atten_scale.xyz +#define g_atten_scale ws_corner_atten_scale.w +#define g_atten_bias ws_increment_x_atten_bias.w +#define g_level_bias ws_increment_y_lvl_bias.w +#define g_increment_x ws_increment_x_atten_bias.xyz +#define g_increment_y ws_increment_y_lvl_bias.xyz +#define g_increment_z ws_increment_z.xyz +#define g_resolution resolution_offset.xyz +#define g_offset resolution_offset.w +#define g_vis_bias vis_bias_bleed_range.x +#define g_vis_bleed vis_bias_bleed_range.y +#define g_vis_range vis_bias_bleed_range.z + +#ifndef MAX_PROBE +#define MAX_PROBE 1 +#endif +#ifndef MAX_GRID +#define MAX_GRID 1 +#endif +#ifndef MAX_PLANAR +#define MAX_PLANAR 1 +#endif + +#ifndef UTIL_TEX +#define UTIL_TEX +uniform sampler2DArray utilTex; +#define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) +#endif /* UTIL_TEX */ + +layout(std140) uniform probe_block { + CubeData probes_data[MAX_PROBE]; +}; + +layout(std140) uniform grid_block { + GridData grids_data[MAX_GRID]; +}; + +layout(std140) uniform planar_block { + PlanarData planars_data[MAX_PLANAR]; +}; + +/* ----------- Functions --------- */ + +float probe_attenuation_cube(int pd_id, vec3 W) +{ + vec3 localpos = transform_point(probes_data[pd_id].influencemat, W); + + float probe_atten_fac = probes_data[pd_id].p_atten_fac; + float fac; + if (probes_data[pd_id].p_atten_type == PROBE_ATTENUATION_BOX) { + vec3 axes_fac = saturate(probe_atten_fac - probe_atten_fac * abs(localpos)); + fac = min_v3(axes_fac); + } + else { + fac = saturate(probe_atten_fac - probe_atten_fac * length(localpos)); + } + + return fac; +} + +float probe_attenuation_planar(PlanarData pd, vec3 W, vec3 N, float roughness) +{ + /* Normal Facing */ + float fac = saturate(dot(pd.pl_normal, N) * pd.pl_facing_scale + pd.pl_facing_bias); + + /* Distance from plane */ + fac *= saturate(abs(dot(pd.pl_plane_eq, vec4(W, 1.0))) * pd.pl_fade_scale + pd.pl_fade_bias); + + /* Fancy fast clipping calculation */ + vec2 dist_to_clip; + dist_to_clip.x = dot(pd.pl_clip_pos_x, W); + dist_to_clip.y = dot(pd.pl_clip_pos_y, W); + /* compare and add all tests */ + fac *= step(2.0, dot(step(pd.pl_clip_edges, dist_to_clip.xxyy), vec2(-1.0, 1.0).xyxy)); + + /* Decrease influence for high roughness */ + fac *= saturate(1.0 - roughness * 10.0); + + return fac; +} + +float probe_attenuation_grid(GridData gd, mat4 localmat, vec3 W, out vec3 localpos) +{ + localpos = transform_point(localmat, W); + vec3 pos_to_edge = max(vec3(0.0), abs(localpos) - 1.0); + float fade = length(pos_to_edge); + return saturate(-fade * gd.g_atten_scale + gd.g_atten_bias); +} + +vec3 probe_evaluate_cube(int pd_id, vec3 W, vec3 R, float roughness) +{ + /* Correct reflection ray using parallax volume intersection. */ + vec3 localpos = transform_point(probes_data[pd_id].parallaxmat, W); + vec3 localray = transform_direction(probes_data[pd_id].parallaxmat, R); + + float dist; + if (probes_data[pd_id].p_parallax_type == PROBE_PARALLAX_BOX) { + dist = line_unit_box_intersect_dist(localpos, localray); + } + else { + dist = line_unit_sphere_intersect_dist(localpos, localray); + } + + /* Use Distance in WS directly to recover intersection */ + vec3 intersection = W + R * dist - probes_data[pd_id].p_position; + + /* From Frostbite PBR Course + * Distance based roughness + * http://www.frostbite.com/wp-content/uploads/2014/11/course_notes_moving_frostbite_to_pbr.pdf */ + float original_roughness = roughness; + float linear_roughness = sqrt(roughness); + float distance_roughness = saturate(dist * linear_roughness / length(intersection)); + linear_roughness = mix(distance_roughness, linear_roughness, linear_roughness); + roughness = linear_roughness * linear_roughness; + + float fac = saturate(original_roughness * 2.0 - 1.0); + R = mix(intersection, R, fac * fac); + + return textureLod_octahedron(probeCubes, vec4(R, float(pd_id)), roughness * prbLodCubeMax, prbLodCubeMax).rgb; +} + +vec3 probe_evaluate_world_spec(vec3 R, float roughness) +{ + return textureLod_octahedron(probeCubes, vec4(R, 0.0), roughness * prbLodCubeMax, prbLodCubeMax).rgb; +} + +vec3 probe_evaluate_planar( + float id, PlanarData pd, vec3 W, vec3 N, vec3 V, + float roughness, inout float fade) +{ + /* Find view vector / reflection plane intersection. */ + vec3 point_on_plane = line_plane_intersect(W, V, pd.pl_plane_eq); + + /* How far the pixel is from the plane. */ + float ref_depth = 1.0; /* TODO parameter */ + + /* Compute distorded reflection vector based on the distance to the reflected object. + * In other words find intersection between reflection vector and the sphere center + * around point_on_plane. */ + vec3 proj_ref = reflect(reflect(-V, N) * ref_depth, pd.pl_normal); + + /* Final point in world space. */ + vec3 ref_pos = point_on_plane + proj_ref; + + /* Reproject to find texture coords. */ + vec4 refco = ViewProjectionMatrix * vec4(ref_pos, 1.0); + refco.xy /= refco.w; + + /* TODO: If we support non-ssr planar reflection, we should blur them with gaussian + * and chose the right mip depending on the cone footprint after projection */ + vec3 sample = textureLod(probePlanars, vec3(refco.xy * 0.5 + 0.5, id), 0.0).rgb; + + return sample; +} + +void fallback_cubemap( + vec3 N, vec3 V, vec3 W, vec3 viewPosition, float roughness, float roughnessSquared, inout vec4 spec_accum) +{ + /* Specular probes */ + vec3 spec_dir = get_specular_reflection_dominant_dir(N, V, roughnessSquared); + +#ifdef SSR_AO + vec4 rand = texelfetch_noise_tex(gl_FragCoord.xy); + vec3 bent_normal; + float final_ao = occlusion_compute(N, viewPosition, 1.0, rand, bent_normal); + final_ao = specular_occlusion(dot(N, V), final_ao, roughness); +#else + const float final_ao = 1.0; +#endif + + /* Starts at 1 because 0 is world probe */ + for (int i = 1; i < MAX_PROBE && i < prbNumRenderCube && spec_accum.a < 0.999; ++i) { + float fade = probe_attenuation_cube(i, W); + + if (fade > 0.0) { + vec3 spec = final_ao * probe_evaluate_cube(i, W, spec_dir, roughness); + accumulate_light(spec, fade, spec_accum); + } + } + + /* World Specular */ + if (spec_accum.a < 0.999) { + vec3 spec = final_ao * probe_evaluate_world_spec(spec_dir, roughness); + accumulate_light(spec, 1.0, spec_accum); + } +} + +#ifdef IRRADIANCE_LIB +vec3 probe_evaluate_grid(GridData gd, vec3 W, vec3 N, vec3 localpos) +{ + localpos = localpos * 0.5 + 0.5; + localpos = localpos * vec3(gd.g_resolution) - 0.5; + + vec3 localpos_floored = floor(localpos); + vec3 trilinear_weight = fract(localpos); + + float weight_accum = 0.0; + vec3 irradiance_accum = vec3(0.0); + + /* For each neighboor cells */ + for (int i = 0; i < 8; ++i) { + ivec3 offset = ivec3(i, i >> 1, i >> 2) & ivec3(1); + vec3 cell_cos = clamp(localpos_floored + vec3(offset), vec3(0.0), vec3(gd.g_resolution) - 1.0); + + /* Keep in sync with update_irradiance_probe */ + ivec3 icell_cos = ivec3(gd.g_level_bias * floor(cell_cos / gd.g_level_bias)); + int cell = gd.g_offset + icell_cos.z + + icell_cos.y * gd.g_resolution.z + + icell_cos.x * gd.g_resolution.z * gd.g_resolution.y; + + vec3 color = irradiance_from_cell_get(cell, N); + + /* We need this because we render probes in world space (so we need light vector in WS). + * And rendering them in local probe space is too much problem. */ + vec3 ws_cell_location = gd.g_corner + + (gd.g_increment_x * cell_cos.x + + gd.g_increment_y * cell_cos.y + + gd.g_increment_z * cell_cos.z); + + vec3 ws_point_to_cell = ws_cell_location - W; + float ws_dist_point_to_cell = length(ws_point_to_cell); + vec3 ws_light = ws_point_to_cell / ws_dist_point_to_cell; + + /* Smooth backface test */ + float weight = saturate(dot(ws_light, N)); + + /* Precomputed visibility */ + weight *= load_visibility_cell(cell, ws_light, ws_dist_point_to_cell, gd.g_vis_bias, gd.g_vis_bleed, gd.g_vis_range); + + /* Smoother transition */ + weight += prbIrradianceSmooth; + + /* Trilinear weights */ + vec3 trilinear = mix(1.0 - trilinear_weight, trilinear_weight, offset); + weight *= trilinear.x * trilinear.y * trilinear.z; + + /* Avoid zero weight */ + weight = max(0.00001, weight); + + weight_accum += weight; + irradiance_accum += color * weight; + } + + return irradiance_accum / weight_accum; +} + +vec3 probe_evaluate_world_diff(vec3 N) +{ + return irradiance_from_cell_get(0, N); +} + +#endif /* IRRADIANCE_LIB */ diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_planar_display_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_display_frag.glsl new file mode 100644 index 00000000000..3808b59761f --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_display_frag.glsl @@ -0,0 +1,14 @@ + +uniform sampler2DArray probePlanars; + +in vec3 worldPosition; +flat in int probeIdx; + +out vec4 FragColor; + +void main() +{ + vec4 refco = ViewProjectionMatrix * vec4(worldPosition, 1.0); + refco.xy /= refco.w; + FragColor = vec4(textureLod(probePlanars, vec3(refco.xy * 0.5 + 0.5, float(probeIdx)), 0.0).rgb, 1.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_planar_display_vert.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_display_vert.glsl new file mode 100644 index 00000000000..a71a3bef1e1 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_display_vert.glsl @@ -0,0 +1,15 @@ + +in vec3 pos; + +in int probe_id; +in mat4 probe_mat; + +out vec3 worldPosition; +flat out int probeIdx; + +void main() +{ + gl_Position = ViewProjectionMatrix * probe_mat * vec4(pos, 1.0); + worldPosition = (probe_mat * vec4(pos, 1.0)).xyz; + probeIdx = probe_id; +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_frag.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_frag.glsl new file mode 100644 index 00000000000..d629195b815 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_frag.glsl @@ -0,0 +1,40 @@ +/** + * Simple downsample shader. Takes the average of the 4 texels of lower mip. + **/ + +uniform sampler2DArray source; +uniform float fireflyFactor; + +in vec2 uvs; +flat in float layer; + +out vec4 FragColor; + +float brightness(vec3 c) +{ + return max(max(c.r, c.g), c.b); +} + +void main() +{ +#if 0 + /* Reconstructing Target uvs like this avoid missing pixels if NPO2 */ + vec2 uvs = gl_FragCoord.xy * 2.0 / vec2(textureSize(source, 0)); + + FragColor = textureLod(source, vec3(uvs, layer), 0.0); +#else + vec2 texel_size = 1.0 / vec2(textureSize(source, 0)); + vec2 uvs = gl_FragCoord.xy * 2.0 * texel_size; + vec4 ofs = texel_size.xyxy * vec4(0.75, 0.75, -0.75, -0.75); + + FragColor = textureLod(source, vec3(uvs + ofs.xy, layer), 0.0); + FragColor += textureLod(source, vec3(uvs + ofs.xw, layer), 0.0); + FragColor += textureLod(source, vec3(uvs + ofs.zy, layer), 0.0); + FragColor += textureLod(source, vec3(uvs + ofs.zw, layer), 0.0); + FragColor *= 0.25; + + /* Clamped brightness. */ + float luma = max(1e-8, brightness(FragColor.rgb)); + FragColor *= 1.0 - max(0.0, luma - fireflyFactor) / luma; +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_geom.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_geom.glsl new file mode 100644 index 00000000000..721cc8789a0 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_geom.glsl @@ -0,0 +1,24 @@ + +layout(triangles) in; +layout(triangle_strip, max_vertices=3) out; + +in int instance[]; +in vec2 vPos[]; + +flat out float layer; + +void main() { + gl_Layer = instance[0]; + layer = float(instance[0]); + + gl_Position = vec4(vPos[0], 0.0, 1.0); + EmitVertex(); + + gl_Position = vec4(vPos[1], 0.0, 1.0); + EmitVertex(); + + gl_Position = vec4(vPos[2], 0.0, 1.0); + EmitVertex(); + + EndPrimitive(); +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_vert.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_vert.glsl new file mode 100644 index 00000000000..d682e39d8ad --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_planar_downsample_vert.glsl @@ -0,0 +1,10 @@ + +in vec2 pos; + +out int instance; +out vec2 vPos; + +void main() { + instance = gl_InstanceID; + vPos = pos; +} diff --git a/source/blender/draw/engines/eevee/shaders/lightprobe_vert.glsl b/source/blender/draw/engines/eevee/shaders/lightprobe_vert.glsl new file mode 100644 index 00000000000..bbb77af673a --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lightprobe_vert.glsl @@ -0,0 +1,10 @@ + +in vec3 pos; + +out vec4 vPos; +flat out int face; + +void main() { + vPos = vec4(pos, 1.0); + face = gl_InstanceID; +} diff --git a/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl b/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl new file mode 100644 index 00000000000..5631957ca31 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl @@ -0,0 +1,523 @@ + +#ifndef LIT_SURFACE_UNIFORM +#define LIT_SURFACE_UNIFORM + +uniform float refractionDepth; + +#ifndef UTIL_TEX +#define UTIL_TEX +uniform sampler2DArray utilTex; +#define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) +#endif /* UTIL_TEX */ + +in vec3 worldPosition; +in vec3 viewPosition; + +#ifdef USE_FLAT_NORMAL +flat in vec3 worldNormal; +flat in vec3 viewNormal; +#else +in vec3 worldNormal; +in vec3 viewNormal; +#endif + +#ifdef HAIR_SHADER +in vec3 hairTangent; /* world space */ +in float hairThickTime; +in float hairThickness; +in float hairTime; +flat in int hairStrandID; + +uniform int hairThicknessRes = 1; +#endif + +#endif /* LIT_SURFACE_UNIFORM */ + +/** AUTO CONFIG + * We include the file multiple times each time with a different configuration. + * This leads to a lot of deadcode. Better idea would be to only generate the one needed. + */ +#if !defined(SURFACE_DEFAULT) + #define SURFACE_DEFAULT + #define CLOSURE_NAME eevee_closure_default + #define CLOSURE_DIFFUSE + #define CLOSURE_GLOSSY +#endif /* SURFACE_DEFAULT */ + +#if !defined(SURFACE_PRINCIPLED) && !defined(CLOSURE_NAME) + #define SURFACE_PRINCIPLED + #define CLOSURE_NAME eevee_closure_principled + #define CLOSURE_DIFFUSE + #define CLOSURE_GLOSSY + #define CLOSURE_CLEARCOAT + #define CLOSURE_REFRACTION + #define CLOSURE_SUBSURFACE +#endif /* SURFACE_PRINCIPLED */ + +#if !defined(SURFACE_CLEARCOAT) && !defined(CLOSURE_NAME) + #define SURFACE_CLEARCOAT + #define CLOSURE_NAME eevee_closure_clearcoat + #define CLOSURE_GLOSSY + #define CLOSURE_CLEARCOAT +#endif /* SURFACE_CLEARCOAT */ + +#if !defined(SURFACE_DIFFUSE) && !defined(CLOSURE_NAME) + #define SURFACE_DIFFUSE + #define CLOSURE_NAME eevee_closure_diffuse + #define CLOSURE_DIFFUSE +#endif /* SURFACE_DIFFUSE */ + +#if !defined(SURFACE_SUBSURFACE) && !defined(CLOSURE_NAME) + #define SURFACE_SUBSURFACE + #define CLOSURE_NAME eevee_closure_subsurface + #define CLOSURE_DIFFUSE + #define CLOSURE_SUBSURFACE +#endif /* SURFACE_SUBSURFACE */ + +#if !defined(SURFACE_SKIN) && !defined(CLOSURE_NAME) + #define SURFACE_SKIN + #define CLOSURE_NAME eevee_closure_skin + #define CLOSURE_DIFFUSE + #define CLOSURE_SUBSURFACE + #define CLOSURE_GLOSSY +#endif /* SURFACE_SKIN */ + +#if !defined(SURFACE_GLOSSY) && !defined(CLOSURE_NAME) + #define SURFACE_GLOSSY + #define CLOSURE_NAME eevee_closure_glossy + #define CLOSURE_GLOSSY +#endif /* SURFACE_GLOSSY */ + +#if !defined(SURFACE_REFRACT) && !defined(CLOSURE_NAME) + #define SURFACE_REFRACT + #define CLOSURE_NAME eevee_closure_refraction + #define CLOSURE_REFRACTION +#endif /* SURFACE_REFRACT */ + +#if !defined(SURFACE_GLASS) && !defined(CLOSURE_NAME) + #define SURFACE_GLASS + #define CLOSURE_NAME eevee_closure_glass + #define CLOSURE_GLOSSY + #define CLOSURE_REFRACTION +#endif /* SURFACE_GLASS */ + +/* Safety : CLOSURE_CLEARCOAT implies CLOSURE_GLOSSY */ +#ifdef CLOSURE_CLEARCOAT + #ifndef CLOSURE_GLOSSY + #define CLOSURE_GLOSSY + #endif +#endif /* CLOSURE_CLEARCOAT */ + +void CLOSURE_NAME( + vec3 N +#ifdef CLOSURE_DIFFUSE + , vec3 albedo +#endif +#ifdef CLOSURE_GLOSSY + , vec3 f0, int ssr_id +#endif +#if defined(CLOSURE_GLOSSY) || defined(CLOSURE_REFRACTION) + , float roughness +#endif +#ifdef CLOSURE_CLEARCOAT + , vec3 C_N, float C_intensity, float C_roughness +#endif +#if defined(CLOSURE_GLOSSY) || defined(CLOSURE_DIFFUSE) + , float ao +#endif +#ifdef CLOSURE_SUBSURFACE + , float sss_scale +#endif +#ifdef CLOSURE_REFRACTION + , float ior +#endif +#ifdef CLOSURE_DIFFUSE + , out vec3 out_diff +#endif +#ifdef CLOSURE_SUBSURFACE + , out vec3 out_trans +#endif +#ifdef CLOSURE_GLOSSY + , out vec3 out_spec +#endif +#ifdef CLOSURE_REFRACTION + , out vec3 out_refr +#endif +#ifdef CLOSURE_GLOSSY + , out vec3 ssr_spec +#endif + ) +{ +#ifdef CLOSURE_DIFFUSE + out_diff = vec3(0.0); +#endif + +#ifdef CLOSURE_SUBSURFACE + out_trans = vec3(0.0); +#endif + +#ifdef CLOSURE_GLOSSY + out_spec = vec3(0.0); +#endif + +#ifdef CLOSURE_REFRACTION + out_refr = vec3(0.0); +#endif + + /* Zero length vectors cause issues, see: T51979. */ + float len = length(N); + if (isnan(len)) { + return; + } + N /= len; + +#ifdef CLOSURE_CLEARCOAT + len = length(C_N); + if (isnan(len)) { + return; + } + C_N /= len; +#endif + +#if defined(CLOSURE_GLOSSY) || defined(CLOSURE_REFRACTION) + roughness = clamp(roughness, 1e-8, 0.9999); + float roughnessSquared = roughness * roughness; +#endif + +#ifdef CLOSURE_CLEARCOAT + C_roughness = clamp(C_roughness, 1e-8, 0.9999); + float C_roughnessSquared = C_roughness * C_roughness; +#endif + + vec3 V = cameraVec; + + vec4 rand = texelFetch(utilTex, ivec3(ivec2(gl_FragCoord.xy) % LUT_SIZE, 2.0), 0); + + /* ---------------------------------------------------------------- */ + /* -------------------- SCENE LAMPS LIGHTING ---------------------- */ + /* ---------------------------------------------------------------- */ + +#ifdef CLOSURE_GLOSSY + vec2 lut_uv = lut_coords(dot(N, V), roughness); + vec4 ltc_mat = texture(utilTex, vec3(lut_uv, 0.0)).rgba; +#endif + +#ifdef CLOSURE_CLEARCOAT + vec2 lut_uv_clear = lut_coords(dot(C_N, V), C_roughness); + vec4 ltc_mat_clear = texture(utilTex, vec3(lut_uv_clear, 0.0)).rgba; + vec3 out_spec_clear = vec3(0.0); +#endif + + for (int i = 0; i < MAX_LIGHT && i < laNumLight; ++i) { + LightData ld = lights_data[i]; + + vec4 l_vector; /* Non-Normalized Light Vector with length in last component. */ + l_vector.xyz = ld.l_position - worldPosition; + l_vector.w = length(l_vector.xyz); + + float l_vis = light_visibility(ld, worldPosition, viewPosition, viewNormal, l_vector); + + if (l_vis < 1e-8) + continue; + + vec3 l_color_vis = ld.l_color * l_vis; + + #ifdef CLOSURE_DIFFUSE + out_diff += l_color_vis * light_diffuse(ld, N, V, l_vector); + #endif + + #ifdef CLOSURE_SUBSURFACE + out_trans += ld.l_color * light_translucent(ld, worldPosition, -N, l_vector, sss_scale); + #endif + + #ifdef CLOSURE_GLOSSY + out_spec += l_color_vis * light_specular(ld, ltc_mat, N, V, l_vector) * ld.l_spec; + #endif + + #ifdef CLOSURE_CLEARCOAT + out_spec_clear += l_color_vis * light_specular(ld, ltc_mat_clear, C_N, V, l_vector) * ld.l_spec; + #endif + } + +#ifdef CLOSURE_GLOSSY + vec3 brdf_lut_lamps = texture(utilTex, vec3(lut_uv, 1.0)).rgb; + out_spec *= F_area(f0, brdf_lut_lamps.xy) * brdf_lut_lamps.z; +#endif + +#ifdef CLOSURE_CLEARCOAT + vec3 brdf_lut_lamps_clear = texture(utilTex, vec3(lut_uv_clear, 1.0)).rgb; + out_spec_clear *= F_area(vec3(0.04), brdf_lut_lamps_clear.xy) * brdf_lut_lamps_clear.z; + out_spec += out_spec_clear * C_intensity; +#endif + + /* ---------------------------------------------------------------- */ + /* ---------------- SPECULAR ENVIRONMENT LIGHTING ----------------- */ + /* ---------------------------------------------------------------- */ + + /* Accumulate incoming light from all sources until accumulator is full. Then apply Occlusion and BRDF. */ +#ifdef CLOSURE_GLOSSY + vec4 spec_accum = vec4(0.0); +#endif + +#ifdef CLOSURE_CLEARCOAT + vec4 C_spec_accum = vec4(0.0); +#endif + +#ifdef CLOSURE_REFRACTION + vec4 refr_accum = vec4(0.0); +#endif + +#ifdef CLOSURE_GLOSSY + /* ---------------------------- */ + /* Planar Reflections */ + /* ---------------------------- */ + + for (int i = 0; i < MAX_PLANAR && i < prbNumPlanar && spec_accum.a < 0.999; ++i) { + PlanarData pd = planars_data[i]; + + /* Fade on geometric normal. */ + float fade = probe_attenuation_planar(pd, worldPosition, (gl_FrontFacing) ? worldNormal : -worldNormal, roughness); + + if (fade > 0.0) { + if (!(ssrToggle && ssr_id == outputSsrId)) { + vec3 spec = probe_evaluate_planar(float(i), pd, worldPosition, N, V, roughness, fade); + accumulate_light(spec, fade, spec_accum); + } + + #ifdef CLOSURE_CLEARCOAT + vec3 C_spec = probe_evaluate_planar(float(i), pd, worldPosition, C_N, V, C_roughness, fade); + accumulate_light(C_spec, fade, C_spec_accum); + #endif + + } + } +#endif + + +#ifdef CLOSURE_GLOSSY + vec3 spec_dir = get_specular_reflection_dominant_dir(N, V, roughnessSquared); +#endif + +#ifdef CLOSURE_CLEARCOAT + vec3 C_spec_dir = get_specular_reflection_dominant_dir(C_N, V, C_roughnessSquared); +#endif + +#ifdef CLOSURE_REFRACTION + /* Refract the view vector using the depth heuristic. + * Then later Refract a second time the already refracted + * ray using the inverse ior. */ + float final_ior = (refractionDepth > 0.0) ? 1.0 / ior : ior; + vec3 refr_V = (refractionDepth > 0.0) ? -refract(-V, N, final_ior) : V; + vec3 refr_pos = (refractionDepth > 0.0) ? line_plane_intersect(worldPosition, refr_V, worldPosition - N * refractionDepth, N) : worldPosition; + vec3 refr_dir = get_specular_refraction_dominant_dir(N, refr_V, roughness, final_ior); +#endif + + +#ifdef CLOSURE_REFRACTION + /* ---------------------------- */ + /* Screen Space Refraction */ + /* ---------------------------- */ + #ifdef USE_REFRACTION + if (ssrToggle && roughness < ssrMaxRoughness + 0.2) { + /* Find approximated position of the 2nd refraction event. */ + vec3 refr_vpos = (refractionDepth > 0.0) ? transform_point(ViewMatrix, refr_pos) : viewPosition; + vec4 trans = screen_space_refraction(refr_vpos, N, refr_V, final_ior, roughnessSquared, rand); + trans.a *= smoothstep(ssrMaxRoughness + 0.2, ssrMaxRoughness, roughness); + accumulate_light(trans.rgb, trans.a, refr_accum); + } + #endif + +#endif + + + /* ---------------------------- */ + /* Specular probes */ + /* ---------------------------- */ +#if defined(CLOSURE_GLOSSY) || defined(CLOSURE_REFRACTION) + + #if defined(CLOSURE_GLOSSY) && defined(CLOSURE_REFRACTION) + #define GLASS_ACCUM 1 + #define ACCUM min(refr_accum.a, spec_accum.a) + #elif defined(CLOSURE_REFRACTION) + #define GLASS_ACCUM 0 + #define ACCUM refr_accum.a + #else + #define GLASS_ACCUM 0 + #define ACCUM spec_accum.a + #endif + + /* Starts at 1 because 0 is world probe */ + for (int i = 1; ACCUM < 0.999 && i < prbNumRenderCube && i < MAX_PROBE; ++i) { + float fade = probe_attenuation_cube(i, worldPosition); + + if (fade > 0.0) { + + #if GLASS_ACCUM + if (spec_accum.a < 0.999) { + #endif + #ifdef CLOSURE_GLOSSY + if (!(ssrToggle && ssr_id == outputSsrId)) { + vec3 spec = probe_evaluate_cube(i, worldPosition, spec_dir, roughness); + accumulate_light(spec, fade, spec_accum); + } + #endif + + #ifdef CLOSURE_CLEARCOAT + vec3 C_spec = probe_evaluate_cube(i, worldPosition, C_spec_dir, C_roughness); + accumulate_light(C_spec, fade, C_spec_accum); + #endif + #if GLASS_ACCUM + } + #endif + + #if GLASS_ACCUM + if (refr_accum.a < 0.999) { + #endif + #ifdef CLOSURE_REFRACTION + vec3 trans = probe_evaluate_cube(i, refr_pos, refr_dir, roughnessSquared); + accumulate_light(trans, fade, refr_accum); + #endif + #if GLASS_ACCUM + } + #endif + } + } + + #undef GLASS_ACCUM + #undef ACCUM + + /* ---------------------------- */ + /* World Probe */ + /* ---------------------------- */ + #ifdef CLOSURE_GLOSSY + if (spec_accum.a < 0.999) { + if (!(ssrToggle && ssr_id == outputSsrId)) { + vec3 spec = probe_evaluate_world_spec(spec_dir, roughness); + accumulate_light(spec, 1.0, spec_accum); + } + + #ifdef CLOSURE_CLEARCOAT + vec3 C_spec = probe_evaluate_world_spec(C_spec_dir, C_roughness); + accumulate_light(C_spec, 1.0, C_spec_accum); + #endif + + } + #endif + + #ifdef CLOSURE_REFRACTION + if (refr_accum.a < 0.999) { + vec3 trans = probe_evaluate_world_spec(refr_dir, roughnessSquared); + accumulate_light(trans, 1.0, refr_accum); + } + #endif +#endif /* Specular probes */ + + + /* ---------------------------- */ + /* Ambient Occlusion */ + /* ---------------------------- */ +#if defined(CLOSURE_GLOSSY) || defined(CLOSURE_DIFFUSE) + vec3 bent_normal; + float final_ao = occlusion_compute(N, viewPosition, ao, rand, bent_normal); +#endif + + + /* ---------------------------- */ + /* Specular Output */ + /* ---------------------------- */ + float NV = dot(N, V); +#ifdef CLOSURE_GLOSSY + vec2 uv = lut_coords(NV, roughness); + vec2 brdf_lut = texture(utilTex, vec3(uv, 1.0)).rg; + + /* This factor is outputted to be used by SSR in order + * to match the intensity of the regular reflections. */ + ssr_spec = F_ibl(f0, brdf_lut); + float spec_occlu = specular_occlusion(NV, final_ao, roughness); + + /* The SSR pass recompute the occlusion to not apply it to the SSR */ + if (ssrToggle && ssr_id == outputSsrId) { + spec_occlu = 1.0; + } + + out_spec += spec_accum.rgb * ssr_spec * spec_occlu; +#endif + +#ifdef CLOSURE_REFRACTION + float btdf = get_btdf_lut(utilTex, NV, roughness, ior); + + out_refr += refr_accum.rgb * btdf; +#endif + +#ifdef CLOSURE_CLEARCOAT + NV = dot(C_N, V); + vec2 C_uv = lut_coords(NV, C_roughness); + vec2 C_brdf_lut = texture(utilTex, vec3(C_uv, 1.0)).rg; + vec3 C_fresnel = F_ibl(vec3(0.04), C_brdf_lut) * specular_occlusion(NV, final_ao, C_roughness); + + out_spec += C_spec_accum.rgb * C_fresnel * C_intensity; +#endif + +#ifdef CLOSURE_GLOSSY + /* Global toggle for lightprobe baking. */ + out_spec *= float(specToggle); +#endif + + /* ---------------------------------------------------------------- */ + /* ---------------- DIFFUSE ENVIRONMENT LIGHTING ------------------ */ + /* ---------------------------------------------------------------- */ + + /* Accumulate light from all sources until accumulator is full. Then apply Occlusion and BRDF. */ +#ifdef CLOSURE_DIFFUSE + vec4 diff_accum = vec4(0.0); + + /* ---------------------------- */ + /* Irradiance Grids */ + /* ---------------------------- */ + /* Start at 1 because 0 is world irradiance */ + for (int i = 1; i < MAX_GRID && i < prbNumRenderGrid && diff_accum.a < 0.999; ++i) { + GridData gd = grids_data[i]; + + vec3 localpos; + float fade = probe_attenuation_grid(gd, grids_data[i].localmat, worldPosition, localpos); + + if (fade > 0.0) { + vec3 diff = probe_evaluate_grid(gd, worldPosition, bent_normal, localpos); + accumulate_light(diff, fade, diff_accum); + } + } + + /* ---------------------------- */ + /* World Diffuse */ + /* ---------------------------- */ + if (diff_accum.a < 0.999 && prbNumRenderGrid > 0) { + vec3 diff = probe_evaluate_world_diff(bent_normal); + accumulate_light(diff, 1.0, diff_accum); + } + + out_diff += diff_accum.rgb * gtao_multibounce(final_ao, albedo); +#endif +} + +/* Cleanup for next configuration */ +#undef CLOSURE_NAME + +#ifdef CLOSURE_DIFFUSE + #undef CLOSURE_DIFFUSE +#endif + +#ifdef CLOSURE_GLOSSY + #undef CLOSURE_GLOSSY +#endif + +#ifdef CLOSURE_CLEARCOAT + #undef CLOSURE_CLEARCOAT +#endif + +#ifdef CLOSURE_REFRACTION + #undef CLOSURE_REFRACTION +#endif + +#ifdef CLOSURE_SUBSURFACE + #undef CLOSURE_SUBSURFACE +#endif diff --git a/source/blender/draw/engines/eevee/shaders/lit_surface_vert.glsl b/source/blender/draw/engines/eevee/shaders/lit_surface_vert.glsl new file mode 100644 index 00000000000..a6e6f1fac42 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/lit_surface_vert.glsl @@ -0,0 +1,79 @@ + +uniform mat4 ModelViewProjectionMatrix; +uniform mat4 ModelViewMatrix; +uniform mat3 WorldNormalMatrix; +#ifndef ATTRIB +uniform mat4 ModelMatrix; +uniform mat3 NormalMatrix; +uniform mat4 ModelMatrixInverse; +#endif + +#ifndef HAIR_SHADER +in vec3 pos; +in vec3 nor; +#endif + +out vec3 worldPosition; +out vec3 viewPosition; + +/* Used for planar reflections */ +/* keep in sync with EEVEE_ClipPlanesUniformBuffer */ +layout(std140) uniform clip_block { + vec4 ClipPlanes[1]; +}; + +#ifdef USE_FLAT_NORMAL +flat out vec3 worldNormal; +flat out vec3 viewNormal; +#else +out vec3 worldNormal; +out vec3 viewNormal; +#endif + +#ifdef HAIR_SHADER +out vec3 hairTangent; +out float hairThickTime; +out float hairThickness; +out float hairTime; +flat out int hairStrandID; +#endif + +void main() +{ +#ifdef GPU_INTEL + /* Due to some shader compiler bug, we somewhat + * need to access gl_VertexID to make it work. even + * if it's actually dead code. */ + gl_Position.x = float(gl_VertexID); +#endif + +#ifdef HAIR_SHADER + hairStrandID = hair_get_strand_id(); + vec3 pos, binor; + hair_get_pos_tan_binor_time( + (ProjectionMatrix[3][3] == 0.0), + ModelMatrixInverse, + ViewMatrixInverse[3].xyz, ViewMatrixInverse[2].xyz, + pos, hairTangent, binor, hairTime, hairThickness, hairThickTime); + + gl_Position = ViewProjectionMatrix * vec4(pos, 1.0); + viewPosition = (ViewMatrix * vec4(pos, 1.0)).xyz; + worldPosition = pos; + hairTangent = normalize(hairTangent); + worldNormal = cross(binor, hairTangent); + viewNormal = normalize(mat3(ViewMatrix) * worldNormal); +#else + gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0); + viewPosition = (ModelViewMatrix * vec4(pos, 1.0)).xyz; + worldPosition = (ModelMatrix * vec4(pos, 1.0)).xyz; + worldNormal = normalize(WorldNormalMatrix * nor); + viewNormal = normalize(NormalMatrix * nor); +#endif + + /* Used for planar reflections */ + gl_ClipDistance[0] = dot(vec4(worldPosition, 1.0), ClipPlanes[0]); + +#ifdef ATTRIB + pass_attrib(pos); +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/ltc_lib.glsl b/source/blender/draw/engines/eevee/shaders/ltc_lib.glsl new file mode 100644 index 00000000000..11c223a45d6 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/ltc_lib.glsl @@ -0,0 +1,321 @@ +/** + * Adapted from : + * Real-Time Polygonal-Light Shading with Linearly Transformed Cosines. + * Eric Heitz, Jonathan Dupuy, Stephen Hill and David Neubelt. + * ACM Transactions on Graphics (Proceedings of ACM SIGGRAPH 2016) 35(4), 2016. + * Project page: https://eheitzresearch.wordpress.com/415-2/ + **/ + +#define USE_LTC + +#ifndef UTIL_TEX +#define UTIL_TEX +uniform sampler2DArray utilTex; +#define texelfetch_noise_tex(coord) texelFetch(utilTex, ivec3(ivec2(coord) % LUT_SIZE, 2.0), 0) +#endif /* UTIL_TEX */ + +/* Diffuse *clipped* sphere integral. */ +float diffuse_sphere_integral_lut(float avg_dir_z, float form_factor) +{ + vec2 uv = vec2(avg_dir_z * 0.5 + 0.5, form_factor); + uv = uv * (LUT_SIZE - 1.0) / LUT_SIZE + 0.5 / LUT_SIZE; + + return texture(utilTex, vec3(uv, 1.0)).w; +} + +float diffuse_sphere_integral_cheap(float avg_dir_z, float form_factor) +{ + return max((form_factor * form_factor + avg_dir_z) / (form_factor + 1.0), 0.0); +} + +/** + * An extended version of the implementation from + * "How to solve a cubic equation, revisited" + * http://momentsingraphics.de/?p=105 + **/ +vec3 solve_cubic(vec4 coefs) +{ + /* Normalize the polynomial */ + coefs.xyz /= coefs.w; + /* Divide middle coefficients by three */ + coefs.yz /= 3.0; + + float A = coefs.w; + float B = coefs.z; + float C = coefs.y; + float D = coefs.x; + + /* Compute the Hessian and the discriminant */ + vec3 delta = vec3( + -coefs.z*coefs.z + coefs.y, + -coefs.y*coefs.z + coefs.x, + dot(vec2(coefs.z, -coefs.y), coefs.xy) + ); + + /* Discriminant */ + float discr = dot(vec2(4.0 * delta.x, -delta.y), delta.zy); + + vec2 xlc, xsc; + + /* Algorithm A */ + { + float A_a = 1.0; + float C_a = delta.x; + float D_a = -2.0 * B * delta.x + delta.y; + + /* Take the cubic root of a normalized complex number */ + float theta = atan(sqrt(discr), -D_a) / 3.0; + + float x_1a = 2.0 * sqrt(-C_a) * cos(theta); + float x_3a = 2.0 * sqrt(-C_a) * cos(theta + (2.0 / 3.0) * M_PI); + + float xl; + if ((x_1a + x_3a) > 2.0 * B) { + xl = x_1a; + } + else { + xl = x_3a; + } + + xlc = vec2(xl - B, A); + } + + /* Algorithm D */ + { + float A_d = D; + float C_d = delta.z; + float D_d = -D * delta.y + 2.0 * C * delta.z; + + /* Take the cubic root of a normalized complex number */ + float theta = atan(D * sqrt(discr), -D_d) / 3.0; + + float x_1d = 2.0 * sqrt(-C_d) * cos(theta); + float x_3d = 2.0 * sqrt(-C_d) * cos(theta + (2.0 / 3.0) * M_PI); + + float xs; + if (x_1d + x_3d < 2.0 * C) + xs = x_1d; + else + xs = x_3d; + + xsc = vec2(-D, xs + C); + } + + float E = xlc.y * xsc.y; + float F = -xlc.x * xsc.y - xlc.y * xsc.x; + float G = xlc.x * xsc.x; + + vec2 xmc = vec2(C * F - B * G, -B * F + C * E); + + vec3 root = vec3(xsc.x / xsc.y, + xmc.x / xmc.y, + xlc.x / xlc.y); + + if (root.x < root.y && root.x < root.z) { + root.xyz = root.yxz; + } + else if (root.z < root.x && root.z < root.y) { + root.xyz = root.xzy; + } + + return root; +} + +/* from Real-Time Area Lighting: a Journey from Research to Production + * Stephen Hill and Eric Heitz */ +vec3 edge_integral_vec(vec3 v1, vec3 v2) +{ + float x = dot(v1, v2); + float y = abs(x); + + float a = 0.8543985 + (0.4965155 + 0.0145206 * y) * y; + float b = 3.4175940 + (4.1616724 + y) * y; + float v = a / b; + + float theta_sintheta = (x > 0.0) ? v : 0.5 * inversesqrt(max(1.0 - x * x, 1e-7)) - v; + + return cross(v1, v2) * theta_sintheta; +} + +mat3 ltc_matrix(vec4 lut) +{ + /* load inverse matrix */ + mat3 Minv = mat3( + vec3( 1, 0, lut.y), + vec3( 0, lut.z, 0), + vec3(lut.w, 0, lut.x) + ); + + return Minv; +} + +void ltc_transform_quad(vec3 N, vec3 V, mat3 Minv, inout vec3 corners[4]) +{ + /* Avoid dot(N, V) == 1 in ortho mode, leading T1 normalize to fail. */ + V = normalize(V + 1e-8); + + /* construct orthonormal basis around N */ + vec3 T1, T2; + T1 = normalize(V - N * dot(N, V)); + T2 = cross(N, T1); + + /* rotate area light in (T1, T2, R) basis */ + Minv = Minv * transpose(mat3(T1, T2, N)); + + /* Apply LTC inverse matrix. */ + corners[0] = normalize(Minv * corners[0]); + corners[1] = normalize(Minv * corners[1]); + corners[2] = normalize(Minv * corners[2]); + corners[3] = normalize(Minv * corners[3]); +} + +/* If corners have already pass through ltc_transform_quad(), then N **MUST** be vec3(0.0, 0.0, 1.0), + * corresponding to the Up axis of the shading basis. */ +float ltc_evaluate_quad(vec3 corners[4], vec3 N) +{ + /* Approximation using a sphere of the same solid angle than the quad. + * Finding the clipped sphere diffuse integral is easier than clipping the quad. */ + vec3 avg_dir; + avg_dir = edge_integral_vec(corners[0], corners[1]); + avg_dir += edge_integral_vec(corners[1], corners[2]); + avg_dir += edge_integral_vec(corners[2], corners[3]); + avg_dir += edge_integral_vec(corners[3], corners[0]); + + float form_factor = length(avg_dir); + float avg_dir_z = dot(N, avg_dir / form_factor); + +#if 1 /* use tabulated horizon-clipped sphere */ + return form_factor * diffuse_sphere_integral_lut(avg_dir_z, form_factor); +#else /* Less accurate version, a bit cheaper. */ + return form_factor * diffuse_sphere_integral_cheap(avg_dir_z, form_factor); +#endif +} + +/* If disk does not need to be transformed and is already front facing. */ +float ltc_evaluate_disk_simple(float disk_radius, float NL) +{ + float r_sqr = disk_radius * disk_radius; + float one_r_sqr = 1.0 + r_sqr; + float form_factor = r_sqr * inversesqrt(one_r_sqr * one_r_sqr); + +#if 1 /* use tabulated horizon-clipped sphere */ + return form_factor * diffuse_sphere_integral_lut(NL, form_factor); +#else /* Less accurate version, a bit cheaper. */ + return form_factor * diffuse_sphere_integral_cheap(NL, form_factor); +#endif +} + +/* disk_points are WS vectors from the shading point to the disk "bounding domain" */ +float ltc_evaluate_disk(vec3 N, vec3 V, mat3 Minv, vec3 disk_points[3]) +{ + /* Avoid dot(N, V) == 1 in ortho mode, leading T1 normalize to fail. */ + V = normalize(V + 1e-8); + + /* construct orthonormal basis around N */ + vec3 T1, T2; + T1 = normalize(V - N * dot(V, N)); + T2 = cross(N, T1); + + /* rotate area light in (T1, T2, R) basis */ + mat3 R = transpose(mat3(T1, T2, N)); + + /* Intermediate step: init ellipse. */ + vec3 L_[3]; + L_[0] = mul(R, disk_points[0]); + L_[1] = mul(R, disk_points[1]); + L_[2] = mul(R, disk_points[2]); + + vec3 C = 0.5 * (L_[0] + L_[2]); + vec3 V1 = 0.5 * (L_[1] - L_[2]); + vec3 V2 = 0.5 * (L_[1] - L_[0]); + + /* Transform ellipse by Minv. */ + C = Minv * C; + V1 = Minv * V1; + V2 = Minv * V2; + + /* Compute eigenvectors of new ellipse. */ + + float d11 = dot(V1, V1); + float d22 = dot(V2, V2); + float d12 = dot(V1, V2); + float a, b; /* Eigenvalues */ + const float threshold = 0.0007; /* Can be adjusted. Fix artifacts. */ + if (abs(d12) / sqrt(d11 * d22) > threshold) { + float tr = d11 + d22; + float det = -d12 * d12 + d11 * d22; + + /* use sqrt matrix to solve for eigenvalues */ + det = sqrt(det); + float u = 0.5 * sqrt(tr - 2.0 * det); + float v = 0.5 * sqrt(tr + 2.0 * det); + float e_max = (u + v); + float e_min = (u - v); + e_max *= e_max; + e_min *= e_min; + + vec3 V1_, V2_; + if (d11 > d22) { + V1_ = d12 * V1 + (e_max - d11) * V2; + V2_ = d12 * V1 + (e_min - d11) * V2; + } + else { + V1_ = d12 * V2 + (e_max - d22) * V1; + V2_ = d12 * V2 + (e_min - d22) * V1; + } + + a = 1.0 / e_max; + b = 1.0 / e_min; + V1 = normalize(V1_); + V2 = normalize(V2_); + } + else { + a = 1.0 / d11; + b = 1.0 / d22; + V1 *= sqrt(a); + V2 *= sqrt(b); + } + + /* Now find front facing ellipse with same solid angle. */ + + vec3 V3 = normalize(cross(V1, V2)); + if (dot(C, V3) < 0.0) + V3 *= -1.0; + + float L = dot(V3, C); + float x0 = dot(V1, C) / L; + float y0 = dot(V2, C) / L; + + a *= L*L; + b *= L*L; + + float c0 = a * b; + float c1 = a * b * (1.0 + x0 * x0 + y0 * y0) - a - b; + float c2 = 1.0 - a * (1.0 + x0 * x0) - b * (1.0 + y0 * y0); + float c3 = 1.0; + + vec3 roots = solve_cubic(vec4(c0, c1, c2, c3)); + float e1 = roots.x; + float e2 = roots.y; + float e3 = roots.z; + + vec3 avg_dir = vec3(a * x0 / (a - e2), b * y0 / (b - e2), 1.0); + + mat3 rotate = mat3(V1, V2, V3); + + avg_dir = rotate * avg_dir; + avg_dir = normalize(avg_dir); + + /* L1, L2 are the extends of the front facing ellipse. */ + float L1 = sqrt(-e2/e3); + float L2 = sqrt(-e2/e1); + + /* Find the sphere and compute lighting. */ + float form_factor = max(0.0, L1 * L2 * inversesqrt((1.0 + L1 * L1) * (1.0 + L2 * L2))); + +#if 1 /* use tabulated horizon-clipped sphere */ + return form_factor * diffuse_sphere_integral_lut(avg_dir.z, form_factor); +#else /* Less accurate version, a bit cheaper. */ + return form_factor * diffuse_sphere_integral_cheap(avg_dir.z, form_factor); +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/octahedron_lib.glsl b/source/blender/draw/engines/eevee/shaders/octahedron_lib.glsl new file mode 100644 index 00000000000..ec13c885bbb --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/octahedron_lib.glsl @@ -0,0 +1,37 @@ + +vec2 mapping_octahedron(vec3 cubevec, vec2 texel_size) +{ + /* projection onto octahedron */ + cubevec /= dot( vec3(1), abs(cubevec) ); + + /* out-folding of the downward faces */ + if ( cubevec.z < 0.0 ) { + cubevec.xy = (1.0 - abs(cubevec.yx)) * sign(cubevec.xy); + } + + /* mapping to [0;1]ˆ2 texture space */ + vec2 uvs = cubevec.xy * (0.5) + 0.5; + + /* edge filtering fix */ + uvs = (1.0 - 2.0 * texel_size) * uvs + texel_size; + + return uvs; +} + +vec4 textureLod_octahedron(sampler2DArray tex, vec4 cubevec, float lod, float lod_max) +{ + vec2 texelSize = 1.0 / vec2(textureSize(tex, int(lod_max))); + + vec2 uvs = mapping_octahedron(cubevec.xyz, texelSize); + + return textureLod(tex, vec3(uvs, cubevec.w), lod); +} + +vec4 texture_octahedron(sampler2DArray tex, vec4 cubevec) +{ + vec2 texelSize = 1.0 / vec2(textureSize(tex, 0)); + + vec2 uvs = mapping_octahedron(cubevec.xyz, texelSize); + + return texture(tex, vec3(uvs, cubevec.w)); +} diff --git a/source/blender/draw/engines/eevee/shaders/prepass_frag.glsl b/source/blender/draw/engines/eevee/shaders/prepass_frag.glsl new file mode 100644 index 00000000000..6b6ab0c0bcc --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/prepass_frag.glsl @@ -0,0 +1,86 @@ + +#ifdef USE_ALPHA_HASH + +/* From the paper "Hashed Alpha Testing" by Chris Wyman and Morgan McGuire */ +float hash(vec2 a) { + return fract(1e4 * sin(17.0 * a.x + 0.1 * a.y) * (0.1 + abs(sin(13.0 * a.y + a.x)))); +} + +float hash3d(vec3 a) { + return hash(vec2(hash(a.xy), a.z)); +} + +uniform float hashAlphaOffset; +uniform float hashAlphaScale = 1.0; /* Roughly in pixel */ + +float hashed_alpha_threshold(vec3 co) +{ + /* Find the discretized derivatives of our coordinates. */ + float max_deriv = max(length(dFdx(co)), length(dFdy(co))); + float pix_scale = 1.0 / (hashAlphaScale * max_deriv); + + /* Find two nearest log-discretized noise scales. */ + float pix_scale_log = log2(pix_scale); + vec2 pix_scales; + pix_scales.x = exp2(floor(pix_scale_log)); + pix_scales.y = exp2(ceil(pix_scale_log)); + + /* Compute alpha thresholds at our two noise scales. */ + vec2 alpha; + alpha.x = hash3d(floor(pix_scales.x * co)); + alpha.y = hash3d(floor(pix_scales.y * co)); + + /* Factor to interpolate lerp with. */ + float fac = fract(log2(pix_scale)); + + /* Interpolate alpha threshold from noise at two scales. */ + float x = mix(alpha.x, alpha.y, fac); + + /* Pass into CDF to compute uniformly distrib threshold. */ + float a = min(fac, 1.0 - fac); + float one_a = 1.0 - a; + float denom = 1.0 / (2 * a * one_a); + float one_x = (1 - x); + vec3 cases = vec3( + (x * x) * denom, + (x - 0.5 * a) / one_a, + 1.0 - (one_x * one_x * denom) + ); + + /* Find our final, uniformly distributed alpha threshold. */ + float threshold = (x < one_a) ? ((x < a) ? cases.x : cases.y) : cases.z; + + /* Avoids threshold == 0. */ + threshold = clamp(threshold, 1.0e-6, 1.0); + + /* Jitter the threshold for TAA accumulation. */ + return fract(threshold + hashAlphaOffset); +} + +#endif + +#ifdef USE_ALPHA_CLIP +uniform float alphaThreshold; +#endif + +void main() +{ + /* For now do nothing. + * In the future, output object motion blur. */ + +#if defined(USE_ALPHA_HASH) || defined(USE_ALPHA_CLIP) +#define NODETREE_EXEC + + Closure cl = nodetree_exec(); + +#if defined(USE_ALPHA_HASH) + /* Hashed Alpha Testing */ + if (cl.opacity < hashed_alpha_threshold(worldPosition)) + discard; +#elif defined(USE_ALPHA_CLIP) + /* Alpha clip */ + if (cl.opacity <= alphaThreshold) + discard; +#endif +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/prepass_vert.glsl b/source/blender/draw/engines/eevee/shaders/prepass_vert.glsl new file mode 100644 index 00000000000..1a8dbc97317 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/prepass_vert.glsl @@ -0,0 +1,39 @@ + +uniform mat4 ModelViewProjectionMatrix; +uniform mat4 ModelMatrix; +uniform mat4 ModelMatrixInverse; + +#ifdef CLIP_PLANES +/* keep in sync with DRWManager.view_data */ +layout(std140) uniform clip_block { + vec4 ClipPlanes[1]; +}; +#endif + +#ifndef HAIR_SHADER +in vec3 pos; +#endif + +void main() +{ +#ifdef HAIR_SHADER + float time, thick_time, thickness; + vec3 pos, tan, binor; + hair_get_pos_tan_binor_time( + (ProjectionMatrix[3][3] == 0.0), + ModelMatrixInverse, + ViewMatrixInverse[3].xyz, ViewMatrixInverse[2].xyz, + pos, tan, binor, time, thickness, thick_time); + + gl_Position = ViewProjectionMatrix * vec4(pos, 1.0); + vec4 worldPosition = vec4(pos, 1.0); +#else + gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0); + vec4 worldPosition = (ModelMatrix * vec4(pos, 1.0)); +#endif + +#ifdef CLIP_PLANES + gl_ClipDistance[0] = dot(vec4(worldPosition.xyz, 1.0), ClipPlanes[0]); +#endif + /* TODO motion vectors */ +} diff --git a/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl new file mode 100644 index 00000000000..c9f2d64f30b --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/raytrace_lib.glsl @@ -0,0 +1,237 @@ +#define MAX_STEP 256 + +float sample_depth(vec2 uv, int index, float lod) +{ +#ifdef PLANAR_PROBE_RAYTRACE + if (index > -1) { + return textureLod(planarDepth, vec3(uv, index), 0.0).r; + } + else { +#endif + /* Correct UVs for mipmaping mis-alignment */ + uv *= mipRatio[int(lod) + hizMipOffset]; + return textureLod(maxzBuffer, uv, lod).r; +#ifdef PLANAR_PROBE_RAYTRACE + } +#endif +} + +vec4 sample_depth_grouped(vec4 uv1, vec4 uv2, int index, float lod) +{ + vec4 depths; +#ifdef PLANAR_PROBE_RAYTRACE + if (index > -1) { + depths.x = textureLod(planarDepth, vec3(uv1.xy, index), 0.0).r; + depths.y = textureLod(planarDepth, vec3(uv1.zw, index), 0.0).r; + depths.z = textureLod(planarDepth, vec3(uv2.xy, index), 0.0).r; + depths.w = textureLod(planarDepth, vec3(uv2.zw, index), 0.0).r; + } + else { +#endif + depths.x = textureLod(maxzBuffer, uv1.xy, lod).r; + depths.y = textureLod(maxzBuffer, uv1.zw, lod).r; + depths.z = textureLod(maxzBuffer, uv2.xy, lod).r; + depths.w = textureLod(maxzBuffer, uv2.zw, lod).r; +#ifdef PLANAR_PROBE_RAYTRACE + } +#endif + return depths; +} + +float refine_isect(float prev_delta, float curr_delta) +{ + /** + * Simplification of 2D intersection : + * r0 = (0.0, prev_ss_ray.z); + * r1 = (1.0, curr_ss_ray.z); + * d0 = (0.0, prev_hit_depth_sample); + * d1 = (1.0, curr_hit_depth_sample); + * vec2 r = r1 - r0; + * vec2 d = d1 - d0; + * vec2 isect = ((d * cross(r1, r0)) - (r * cross(d1, d0))) / cross(r,d); + * + * We only want isect.x to know how much stride we need. So it simplifies : + * + * isect_x = (cross(r1, r0) - cross(d1, d0)) / cross(r,d); + * isect_x = (prev_ss_ray.z - prev_hit_depth_sample.z) / cross(r,d); + */ + return saturate(prev_delta / (prev_delta - curr_delta)); +} + +void prepare_raycast( + vec3 ray_origin, vec3 ray_dir, float thickness, out vec4 ss_step, out vec4 ss_ray, out float max_time) +{ + /* Negate the ray direction if it goes towards the camera. + * This way we don't need to care if the projected point + * is behind the near plane. */ + float z_sign = -sign(ray_dir.z); + vec3 ray_end = ray_origin + z_sign * ray_dir; + + /* Project into screen space. */ + vec4 ss_start, ss_end; + ss_start.xyz = project_point(ProjectionMatrix, ray_origin); + ss_end.xyz = project_point(ProjectionMatrix, ray_end); + + /* We interpolate the ray Z + thickness values to check if depth is within threshold. */ + ray_origin.z -= thickness; + ray_end.z -= thickness; + ss_start.w = project_point(ProjectionMatrix, ray_origin).z; + ss_end.w = project_point(ProjectionMatrix, ray_end).z; + + /* XXX This is a hack a better method is welcome ! */ + /* We take the delta between the offseted depth and the depth and substract it from the ray depth. + * This will change the world space thickness appearance a bit but we can have negative + * values without worries. We cannot do this in viewspace because of the perspective division. */ + ss_start.w = 2.0 * ss_start.z - ss_start.w; + ss_end.w = 2.0 * ss_end.z - ss_end.w; + + ss_step = ss_end - ss_start; + max_time = length(ss_step.xyz); + ss_step = z_sign * ss_step / length(ss_step.xyz); + + /* If the line is degenerate, make it cover at least one pixel + * to not have to handle zero-pixel extent as a special case later */ + ss_step.xy += vec2((dot(ss_step.xy, ss_step.xy) < 0.000001) ? 0.001 : 0.0); + + /* Make ss_step cover one pixel. */ + ss_step /= max(abs(ss_step.x), abs(ss_step.y)); + ss_step *= (abs(ss_step.x) > abs(ss_step.y)) ? ssrPixelSize.x : ssrPixelSize.y; + + /* Clip to segment's end. */ + max_time /= length(ss_step.xyz); + + /* Clipping to frustum sides. */ + max_time = min(max_time, line_unit_box_intersect_dist(ss_start.xyz, ss_step.xyz)); + + /* Convert to texture coords. Z component included + * since this is how it's stored in the depth buffer. + * 4th component how far we are on the ray */ + ss_ray = ss_start * 0.5 + 0.5; + ss_step *= 0.5; + + ss_ray.xy += 0.5 * ssrPixelSize * 2.0; /* take the center of the texel. * 2 because halfres. */ +} + +/* See times_and_deltas. */ +#define curr_time times_and_deltas.x +#define prev_time times_and_deltas.y +#define curr_delta times_and_deltas.z +#define prev_delta times_and_deltas.w + +// #define GROUPED_FETCHES /* is still slower, need to see where is the bottleneck. */ +/* Return the hit position, and negate the z component (making it positive) if not hit occurred. */ +/* __ray_dir__ is the ray direction premultiplied by it's maximum length */ +vec3 raycast( + int index, vec3 ray_origin, vec3 ray_dir, float thickness, float ray_jitter, + float trace_quality, float roughness, const bool discard_backface) +{ + vec4 ss_step, ss_start; + float max_time; + prepare_raycast(ray_origin, ray_dir, thickness, ss_step, ss_start, max_time); + + float max_trace_time = max(0.001, max_time - 0.01); + +#ifdef GROUPED_FETCHES + ray_jitter *= 0.25; +#endif + + /* x : current_time, y: previous_time, z: current_delta, w: previous_delta */ + vec4 times_and_deltas = vec4(0.0); + + float ray_time = 0.0; + float depth_sample = sample_depth(ss_start.xy, index, 0.0); + curr_delta = depth_sample - ss_start.z; + + float lod_fac = saturate(fast_sqrt(roughness) * 2.0 - 0.4); + bool hit = false; + float iter; + for (iter = 1.0; !hit && (ray_time < max_time) && (iter < MAX_STEP); iter++) { + /* Minimum stride of 2 because we are using half res minmax zbuffer. */ + float stride = max(1.0, iter * trace_quality) * 2.0; + float lod = log2(stride * 0.5 * trace_quality) * lod_fac; + ray_time += stride; + + /* Save previous values. */ + times_and_deltas.xyzw = times_and_deltas.yxwz; + +#ifdef GROUPED_FETCHES + stride *= 4.0; + vec4 jit_stride = mix(vec4(2.0), vec4(stride), vec4(0.0, 0.25, 0.5, 0.75) + ray_jitter); + + vec4 times = min(vec4(ray_time) + jit_stride, vec4(max_trace_time)); + + vec4 uv1 = ss_start.xyxy + ss_step.xyxy * times.xxyy; + vec4 uv2 = ss_start.xyxy + ss_step.xyxy * times.zzww; + + vec4 depth_samples = sample_depth_grouped(uv1, uv2, index, lod); + + vec4 ray_z = ss_start.zzzz + ss_step.zzzz * times.xyzw; + vec4 ray_w = ss_start.wwww + ss_step.wwww * vec4(prev_time, times.xyz); + + vec4 deltas = depth_samples - ray_z; + /* Same as component wise (curr_delta <= 0.0) && (prev_w <= depth_sample). */ + bvec4 test = equal(step(deltas, vec4(0.0)) * step(ray_w, depth_samples), vec4(1.0)); + hit = any(test); + + if (hit) { + vec2 m = vec2(1.0, 0.0); /* Mask */ + + vec4 ret_times_and_deltas = times.wzzz * m.xxyy + deltas.wwwz * m.yyxx; + ret_times_and_deltas = (test.z) ? times.zyyy * m.xxyy + deltas.zzzy * m.yyxx : ret_times_and_deltas; + ret_times_and_deltas = (test.y) ? times.yxxx * m.xxyy + deltas.yyyx * m.yyxx : ret_times_and_deltas; + times_and_deltas = (test.x) ? times.xxxx * m.xyyy + deltas.xxxx * m.yyxy + times_and_deltas.yyww * m.yxyx : ret_times_and_deltas; + + depth_sample = depth_samples.w; + depth_sample = (test.z) ? depth_samples.z : depth_sample; + depth_sample = (test.y) ? depth_samples.y : depth_sample; + depth_sample = (test.x) ? depth_samples.x : depth_sample; + } + else { + curr_time = times.w; + curr_delta = deltas.w; + } +#else + float jit_stride = mix(2.0, stride, ray_jitter); + + curr_time = min(ray_time + jit_stride, max_trace_time); + vec4 ss_ray = ss_start + ss_step * curr_time; + + depth_sample = sample_depth(ss_ray.xy, index, lod); + + float prev_w = ss_start.w + ss_step.w * prev_time; + curr_delta = depth_sample - ss_ray.z; + hit = (curr_delta <= 0.0) && (prev_w <= depth_sample); +#endif + } + + if (discard_backface) { + /* Discard backface hits */ + hit = hit && (prev_delta > 0.0); + } + + /* Reject hit if background. */ + hit = hit && (depth_sample != 1.0); + + curr_time = (hit) ? mix(prev_time, curr_time, refine_isect(prev_delta, curr_delta)) : curr_time; + ray_time = (hit) ? curr_time : ray_time; + + /* Clip to frustum. */ + ray_time = max(0.001, min(ray_time, max_time - 1.5)); + + vec4 ss_ray = ss_start + ss_step * ray_time; + + /* Tag Z if ray failed. */ + ss_ray.z *= (hit) ? 1.0 : -1.0; + return ss_ray.xyz; +} + +float screen_border_mask(vec2 hit_co) +{ + const float margin = 0.003; + float atten = ssrBorderFac + margin; /* Screen percentage */ + hit_co = smoothstep(margin, atten, hit_co) * (1 - smoothstep(1.0 - atten, 1.0 - margin, hit_co)); + + float screenfade = hit_co.x * hit_co.y; + + return screenfade; +} diff --git a/source/blender/draw/engines/eevee/shaders/shadow_copy_frag.glsl b/source/blender/draw/engines/eevee/shaders/shadow_copy_frag.glsl new file mode 100644 index 00000000000..3ac214bfde2 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/shadow_copy_frag.glsl @@ -0,0 +1,196 @@ +/* Copy the depth only shadowmap into another texture while converting + * to linear depth (or other storage method) and doing a 3x3 box filter. */ + +layout(std140) uniform shadow_render_block { + vec4 lampPosition; + float cubeTexelSize; + float storedTexelSize; + float nearClip; + float farClip; + int shadowSampleCount; + float shadowInvSampleCount; + float exponent; +}; + +#ifdef CSM +uniform sampler2DArray shadowTexture; +uniform int cascadeId; +#else +uniform samplerCube shadowTexture; +uniform int faceId; +#endif +uniform float shadowFilterSize; + +out vec4 FragColor; + +#define linear_depth(z) ((nearClip * farClip) / (clamp(z, 0.0, 0.999999) * (nearClip - farClip) + farClip)) + +/* add bias so background filtering does not bleed into shadow map */ +#define BACKGROUND_BIAS 0.05 + +#ifdef CSM +vec4 get_world_distance(vec4 depths, vec3 cos[4]) +{ + depths += step(vec4(0.9999), depths) * BACKGROUND_BIAS; + return clamp(depths * abs(farClip - nearClip), 0.0, 1e10); /* Same factor as in shadow_cascade(). */ +} + +float get_world_distance(float depth, vec3 cos) +{ + depth += step(0.9999, depth) * BACKGROUND_BIAS; + return clamp(depth * abs(farClip - nearClip), 0.0, 1e10); /* Same factor as in shadow_cascade(). */ +} + +#else /* CUBEMAP */ +vec4 get_world_distance(vec4 depths, vec3 cos[4]) +{ + depths = linear_depth(depths); + cos[0] = normalize(abs(cos[0])); + cos[1] = normalize(abs(cos[1])); + cos[2] = normalize(abs(cos[2])); + cos[3] = normalize(abs(cos[3])); + vec4 cos_vec; + cos_vec.x = max(cos[0].x, max(cos[0].y, cos[0].z)); + cos_vec.y = max(cos[1].x, max(cos[1].y, cos[1].z)); + cos_vec.z = max(cos[2].x, max(cos[2].y, cos[2].z)); + cos_vec.w = max(cos[3].x, max(cos[3].y, cos[3].z)); + return depths / cos_vec; +} + +float get_world_distance(float depth, vec3 cos) +{ + depth = linear_depth(depth); + cos = normalize(abs(cos)); + float cos_vec = max(cos.x, max(cos.y, cos.z)); + return depth / cos_vec; +} +#endif + +/* Marco Salvi's GDC 2008 presentation about shadow maps pre-filtering techniques slide 24 */ +#define ln_space_prefilter_step(ref, sample) exp(sample - ref) +#define ln_space_prefilter_finalize(ref, sum) (ref + log(SAMPLE_WEIGHT * sum)) + +#define SAMPLE_WEIGHT 0.11111 + +#ifdef ESM +void prefilter(vec4 depths, float ref, inout float accum) +{ + accum += dot(ln_space_prefilter_step(ref, depths), vec4(1.0)); +} +#else /* VSM */ +void prefilter(vec4 depths, float ref, inout vec2 accum) +{ + vec4 depths_sqr = depths * depths; + accum += vec2(dot(vec4(1.0), depths), dot(vec4(1.0), depths_sqr)) * SAMPLE_WEIGHT; +} +#endif + +#ifdef CSM +vec3 get_texco(vec2 uvs, vec2 ofs) +{ + return vec3(uvs + ofs, float(cascadeId)); +} +#else /* CUBEMAP */ +const vec3 minorAxisX[6] = vec3[6]( + vec3(0.0f, 0.0f, -1.0f), + vec3(0.0f, 0.0f, 1.0f), + vec3(1.0f, 0.0f, 0.0f), + vec3(1.0f, 0.0f, 0.0f), + vec3(1.0f, 0.0f, 0.0f), + vec3(-1.0f, 0.0f, 0.0f) +); + +const vec3 minorAxisY[6] = vec3[6]( + vec3(0.0f, -1.0f, 0.0f), + vec3(0.0f, -1.0f, 0.0f), + vec3(0.0f, 0.0f, 1.0f), + vec3(0.0f, 0.0f, -1.0f), + vec3(0.0f, -1.0f, 0.0f), + vec3(0.0f, -1.0f, 0.0f) +); + +const vec3 majorAxis[6] = vec3[6]( + vec3(1.0f, 0.0f, 0.0f), + vec3(-1.0f, 0.0f, 0.0f), + vec3(0.0f, 1.0f, 0.0f), + vec3(0.0f, -1.0f, 0.0f), + vec3(0.0f, 0.0f, 1.0f), + vec3(0.0f, 0.0f, -1.0f) +); + +vec3 get_texco(vec2 uvs, vec2 ofs) +{ + uvs += ofs; + return majorAxis[faceId] + uvs.x * minorAxisX[faceId] + uvs.y * minorAxisY[faceId]; +} +#endif + +void main() { + /* Copy the depth only shadowmap into another texture while converting + * to linear depth and do a 3x3 box blur. */ + +#ifdef CSM + vec2 uvs = gl_FragCoord.xy * storedTexelSize; +#else /* CUBEMAP */ + vec2 uvs = gl_FragCoord.xy * cubeTexelSize * 2.0 - 1.0; +#endif + + /* Center texel */ + vec3 co = get_texco(uvs, vec2(0.0)); + float depth = texture(shadowTexture, co).r; + depth = get_world_distance(depth, co); + + if (shadowFilterSize == 0.0) { +#ifdef ESM + FragColor = vec4(depth); +#else /* VSM */ + FragColor = vec2(depth, depth * depth).xyxy; +#endif + return; + } + +#ifdef ESM + float accum = 1.0; + float ref = depth; +#else /* VSM */ + float ref = 0.0; /* UNUSED */ + vec2 accum = vec2(depth, depth * depth) * SAMPLE_WEIGHT; +#endif + +#ifdef CSM + vec3 ofs = vec3(1.0, 0.0, -1.0) * shadowFilterSize; +#else /* CUBEMAP */ + vec3 ofs = vec3(1.0, 0.0, -1.0) * shadowFilterSize; +#endif + + vec3 cos[4]; + cos[0] = get_texco(uvs, ofs.zz); + cos[1] = get_texco(uvs, ofs.yz); + cos[2] = get_texco(uvs, ofs.xz); + cos[3] = get_texco(uvs, ofs.zy); + + vec4 depths; + depths.x = texture(shadowTexture, cos[0]).r; + depths.y = texture(shadowTexture, cos[1]).r; + depths.z = texture(shadowTexture, cos[2]).r; + depths.w = texture(shadowTexture, cos[3]).r; + depths = get_world_distance(depths, cos); + prefilter(depths, ref, accum); + + cos[0] = get_texco(uvs, ofs.xy); + cos[1] = get_texco(uvs, ofs.zx); + cos[2] = get_texco(uvs, ofs.yx); + cos[3] = get_texco(uvs, ofs.xx); + depths.x = texture(shadowTexture, cos[0]).r; + depths.y = texture(shadowTexture, cos[1]).r; + depths.z = texture(shadowTexture, cos[2]).r; + depths.w = texture(shadowTexture, cos[3]).r; + depths = get_world_distance(depths, cos); + prefilter(depths, ref, accum); + +#ifdef ESM + accum = ln_space_prefilter_finalize(ref, accum); +#endif + + FragColor = vec2(accum).xyxy; +} diff --git a/source/blender/draw/engines/eevee/shaders/shadow_frag.glsl b/source/blender/draw/engines/eevee/shaders/shadow_frag.glsl new file mode 100644 index 00000000000..160fcee4c73 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/shadow_frag.glsl @@ -0,0 +1,4 @@ + +void main() { + /* Do nothing */ +} diff --git a/source/blender/draw/engines/eevee/shaders/shadow_store_frag.glsl b/source/blender/draw/engines/eevee/shaders/shadow_store_frag.glsl new file mode 100644 index 00000000000..cb7b2b0312a --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/shadow_store_frag.glsl @@ -0,0 +1,242 @@ + +layout(std140) uniform shadow_render_block { + vec4 lampPosition; + float cubeTexelSize; + float storedTexelSize; + float nearClip; + float farClip; + int shadowSampleCount; + float shadowInvSampleCount; + float exponent; +}; + +#ifdef CSM +uniform sampler2DArray shadowTexture; +uniform int cascadeId; +#else +uniform samplerCube shadowTexture; +#endif +uniform float shadowFilterSize; + +out vec4 FragColor; + +vec3 octahedral_to_cubemap_proj(vec2 co) +{ + co = co * 2.0 - 1.0; + + vec2 abs_co = abs(co); + vec3 v = vec3(co, 1.0 - (abs_co.x + abs_co.y)); + + if ( abs_co.x + abs_co.y > 1.0 ) { + v.xy = (abs(co.yx) - 1.0) * -sign(co.xy); + } + + return v; +} + +/* Marco Salvi's GDC 2008 presentation about shadow maps pre-filtering techniques slide 24 */ +/* http://advances.realtimerendering.com/s2009/SIGGRAPH%202009%20-%20Lighting%20Research%20at%20Bungie.pdf Slide 55*/ +#define ln_space_prefilter_step(ref, sample) exp(sample - ref) +#define ln_space_prefilter_finalize(ref, sum) (ref + log(shadowInvSampleCount * sum)) + +#ifdef CSM +vec3 get_texco(vec3 cos, const vec2 ofs) +{ + cos.xy += ofs * shadowFilterSize; + return cos; +} +#else /* CUBEMAP */ +/* global vars */ +vec3 T = vec3(0.0); +vec3 B = vec3(0.0); + +void make_orthonormal_basis(vec3 N) +{ + vec3 UpVector = (abs(N.z) < 0.999) ? vec3(0.0, 0.0, 1.0) : vec3(1.0, 0.0, 0.0); + T = normalize(cross(UpVector, N)); + B = cross(N, T); +} + +vec3 get_texco(vec3 cos, const vec2 ofs) +{ + return cos + ofs.x * T + ofs.y * B; +} + +#endif + +#ifdef ESM +void grouped_samples_accum( + vec3 cos, + const vec2 co1, const vec2 co2, const vec2 co3, const vec2 co4, + float ref, + inout vec4 accum) +{ + vec4 depths; + depths.x = texture(shadowTexture, get_texco(cos, co1)).r; + depths.y = texture(shadowTexture, get_texco(cos, co2)).r; + depths.z = texture(shadowTexture, get_texco(cos, co3)).r; + depths.w = texture(shadowTexture, get_texco(cos, co4)).r; + + accum += ln_space_prefilter_step(ref, depths); +} +#else /* VSM */ +void grouped_samples_accum( + vec3 cos, + const vec2 co1, const vec2 co2, const vec2 co3, const vec2 co4, + float ref, + inout vec2 accum) +{ + vec4 depths1, depths2; + depths1.xy = texture(shadowTexture, get_texco(cos, co1)).rg; + depths1.zw = texture(shadowTexture, get_texco(cos, co2)).rg; + depths2.xy = texture(shadowTexture, get_texco(cos, co3)).rg; + depths2.zw = texture(shadowTexture, get_texco(cos, co4)).rg; + + accum += depths1.xy + depths1.zw + depths2.xy + depths2.zw; +} +#endif + +void main() { + vec3 cos; + + cos.xy = gl_FragCoord.xy * storedTexelSize; + +#ifdef CSM + cos.z = float(cascadeId); +#else /* CUBEMAP */ + /* add a 2 pixel border to ensure filtering is correct */ + cos.xy *= 1.0 + storedTexelSize * 2.0; + cos.xy -= storedTexelSize; + + float pattern = 1.0; + + /* edge mirroring : only mirror if directly adjacent + * (not diagonally adjacent) */ + vec2 m = abs(cos.xy - 0.5) + 0.5; + vec2 f = floor(m); + if (f.x - f.y != 0.0) { + cos.xy = 1.0 - cos.xy; + } + + /* clamp to [0-1] */ + cos.xy = fract(cos.xy); + + /* get cubemap vector */ + cos = normalize(octahedral_to_cubemap_proj(cos.xy)); + make_orthonormal_basis(cos); + + T *= shadowFilterSize; + B *= shadowFilterSize; +#endif + +#ifdef ESM + /* disc blur in log space. */ + vec4 depths; + depths.x = texture(shadowTexture, get_texco(cos, concentric[0])).r; + depths.y = texture(shadowTexture, get_texco(cos, concentric[1])).r; + depths.z = texture(shadowTexture, get_texco(cos, concentric[2])).r; + depths.w = texture(shadowTexture, get_texco(cos, concentric[3])).r; + float ref = depths.x; + vec4 accum = ln_space_prefilter_step(ref, depths); + +#else /* VSM */ + float ref = 0.0; /* UNUSED */ + vec2 accum = vec2(0.0); + grouped_samples_accum(cos, concentric[0], concentric[1], concentric[2], concentric[3], ref, accum); +#endif + + /** + * Making the `grouped_samples_accum` be called within a loop would be + * the most conventional solution, however in some older gpus, transverse the huge + * `const vec2 concentric[]` array with variable indices is extremely slow. + * The solution is to use constant indices to access the array. + */ + if (shadowSampleCount > 4) { + grouped_samples_accum(cos, concentric[4], concentric[5], concentric[6], concentric[7], ref, accum); + grouped_samples_accum(cos, concentric[8], concentric[9], concentric[10], concentric[11], ref, accum); + grouped_samples_accum(cos, concentric[12], concentric[13], concentric[14], concentric[15], ref, accum); + } + if (shadowSampleCount > 16) { + grouped_samples_accum(cos, concentric[16], concentric[17], concentric[18], concentric[19], ref, accum); + grouped_samples_accum(cos, concentric[20], concentric[21], concentric[22], concentric[23], ref, accum); + grouped_samples_accum(cos, concentric[24], concentric[25], concentric[26], concentric[27], ref, accum); + grouped_samples_accum(cos, concentric[28], concentric[29], concentric[30], concentric[31], ref, accum); + grouped_samples_accum(cos, concentric[32], concentric[33], concentric[34], concentric[35], ref, accum); + } +#ifdef HIGH_BLUR + if (shadowSampleCount > 36) { + grouped_samples_accum(cos, concentric[36], concentric[37], concentric[38], concentric[39], ref, accum); + grouped_samples_accum(cos, concentric[40], concentric[41], concentric[42], concentric[43], ref, accum); + grouped_samples_accum(cos, concentric[44], concentric[45], concentric[46], concentric[47], ref, accum); + grouped_samples_accum(cos, concentric[48], concentric[49], concentric[50], concentric[51], ref, accum); + grouped_samples_accum(cos, concentric[52], concentric[53], concentric[54], concentric[55], ref, accum); + grouped_samples_accum(cos, concentric[56], concentric[57], concentric[58], concentric[59], ref, accum); + grouped_samples_accum(cos, concentric[60], concentric[61], concentric[62], concentric[63], ref, accum); + } + if (shadowSampleCount > 64) { + grouped_samples_accum(cos, concentric[64], concentric[65], concentric[66], concentric[67], ref, accum); + grouped_samples_accum(cos, concentric[68], concentric[69], concentric[70], concentric[71], ref, accum); + grouped_samples_accum(cos, concentric[72], concentric[73], concentric[74], concentric[75], ref, accum); + grouped_samples_accum(cos, concentric[76], concentric[77], concentric[78], concentric[79], ref, accum); + grouped_samples_accum(cos, concentric[80], concentric[81], concentric[82], concentric[83], ref, accum); + grouped_samples_accum(cos, concentric[84], concentric[85], concentric[86], concentric[87], ref, accum); + grouped_samples_accum(cos, concentric[88], concentric[89], concentric[90], concentric[91], ref, accum); + grouped_samples_accum(cos, concentric[92], concentric[93], concentric[94], concentric[95], ref, accum); + grouped_samples_accum(cos, concentric[96], concentric[97], concentric[98], concentric[99], ref, accum); + } + if (shadowSampleCount > 100) { + grouped_samples_accum(cos, concentric[100], concentric[101], concentric[102], concentric[103], ref, accum); + grouped_samples_accum(cos, concentric[104], concentric[105], concentric[106], concentric[107], ref, accum); + grouped_samples_accum(cos, concentric[108], concentric[109], concentric[110], concentric[111], ref, accum); + grouped_samples_accum(cos, concentric[112], concentric[113], concentric[114], concentric[115], ref, accum); + grouped_samples_accum(cos, concentric[116], concentric[117], concentric[118], concentric[119], ref, accum); + grouped_samples_accum(cos, concentric[120], concentric[121], concentric[122], concentric[123], ref, accum); + grouped_samples_accum(cos, concentric[124], concentric[125], concentric[126], concentric[127], ref, accum); + grouped_samples_accum(cos, concentric[128], concentric[129], concentric[130], concentric[131], ref, accum); + grouped_samples_accum(cos, concentric[132], concentric[133], concentric[134], concentric[135], ref, accum); + grouped_samples_accum(cos, concentric[136], concentric[137], concentric[138], concentric[139], ref, accum); + grouped_samples_accum(cos, concentric[140], concentric[141], concentric[142], concentric[143], ref, accum); + } + if (shadowSampleCount > 144) { + grouped_samples_accum(cos, concentric[144], concentric[145], concentric[146], concentric[147], ref, accum); + grouped_samples_accum(cos, concentric[148], concentric[149], concentric[150], concentric[151], ref, accum); + grouped_samples_accum(cos, concentric[152], concentric[153], concentric[154], concentric[155], ref, accum); + grouped_samples_accum(cos, concentric[156], concentric[157], concentric[158], concentric[159], ref, accum); + grouped_samples_accum(cos, concentric[160], concentric[161], concentric[162], concentric[163], ref, accum); + grouped_samples_accum(cos, concentric[164], concentric[165], concentric[166], concentric[167], ref, accum); + grouped_samples_accum(cos, concentric[168], concentric[169], concentric[170], concentric[171], ref, accum); + grouped_samples_accum(cos, concentric[172], concentric[173], concentric[174], concentric[175], ref, accum); + grouped_samples_accum(cos, concentric[176], concentric[177], concentric[178], concentric[179], ref, accum); + grouped_samples_accum(cos, concentric[180], concentric[181], concentric[182], concentric[183], ref, accum); + grouped_samples_accum(cos, concentric[184], concentric[185], concentric[186], concentric[187], ref, accum); + grouped_samples_accum(cos, concentric[188], concentric[189], concentric[190], concentric[191], ref, accum); + grouped_samples_accum(cos, concentric[192], concentric[193], concentric[194], concentric[195], ref, accum); + } + if (shadowSampleCount > 196) { + grouped_samples_accum(cos, concentric[196], concentric[197], concentric[198], concentric[199], ref, accum); + grouped_samples_accum(cos, concentric[200], concentric[201], concentric[202], concentric[203], ref, accum); + grouped_samples_accum(cos, concentric[204], concentric[205], concentric[206], concentric[207], ref, accum); + grouped_samples_accum(cos, concentric[208], concentric[209], concentric[210], concentric[211], ref, accum); + grouped_samples_accum(cos, concentric[212], concentric[213], concentric[114], concentric[215], ref, accum); + grouped_samples_accum(cos, concentric[216], concentric[217], concentric[218], concentric[219], ref, accum); + grouped_samples_accum(cos, concentric[220], concentric[221], concentric[222], concentric[223], ref, accum); + grouped_samples_accum(cos, concentric[224], concentric[225], concentric[226], concentric[227], ref, accum); + grouped_samples_accum(cos, concentric[228], concentric[229], concentric[230], concentric[231], ref, accum); + grouped_samples_accum(cos, concentric[232], concentric[233], concentric[234], concentric[235], ref, accum); + grouped_samples_accum(cos, concentric[236], concentric[237], concentric[238], concentric[239], ref, accum); + grouped_samples_accum(cos, concentric[240], concentric[241], concentric[242], concentric[243], ref, accum); + grouped_samples_accum(cos, concentric[244], concentric[245], concentric[246], concentric[247], ref, accum); + grouped_samples_accum(cos, concentric[248], concentric[249], concentric[250], concentric[251], ref, accum); + grouped_samples_accum(cos, concentric[252], concentric[253], concentric[254], concentric[255], ref, accum); + } +#endif + +#ifdef ESM + accum.x = dot(vec4(1.0), accum); + accum.x = ln_space_prefilter_finalize(ref, accum.x); + FragColor = accum.xxxx; + +#else /* VSM */ + FragColor = accum.xyxy * shadowInvSampleCount; +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl b/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl new file mode 100644 index 00000000000..cfd24ae8d65 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl @@ -0,0 +1,33 @@ + +uniform mat4 ModelViewProjectionMatrix; +#ifdef MESH_SHADER +uniform mat4 ModelViewMatrix; +uniform mat3 WorldNormalMatrix; +# ifndef ATTRIB +uniform mat4 ModelMatrix; +uniform mat3 NormalMatrix; +# endif +#endif + +in vec3 pos; +in vec3 nor; + +#ifdef MESH_SHADER +out vec3 worldPosition; +out vec3 viewPosition; +out vec3 worldNormal; +out vec3 viewNormal; +#endif + +void main() { + gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0); +#ifdef MESH_SHADER + viewPosition = (ModelViewMatrix * vec4(pos, 1.0)).xyz; + worldPosition = (ModelMatrix * vec4(pos, 1.0)).xyz; + viewNormal = normalize(NormalMatrix * nor); + worldNormal = normalize(WorldNormalMatrix * nor); +#ifdef ATTRIB + pass_attrib(pos); +#endif +#endif +} diff --git a/source/blender/draw/engines/eevee/shaders/ssr_lib.glsl b/source/blender/draw/engines/eevee/shaders/ssr_lib.glsl new file mode 100644 index 00000000000..6c7bfeb6b82 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/ssr_lib.glsl @@ -0,0 +1,72 @@ +/* ------------ Refraction ------------ */ + +#define BTDF_BIAS 0.85 + +vec4 screen_space_refraction(vec3 viewPosition, vec3 N, vec3 V, float ior, float roughnessSquared, vec4 rand) +{ + float a2 = max(5e-6, roughnessSquared * roughnessSquared); + + /* Importance sampling bias */ + rand.x = mix(rand.x, 0.0, BTDF_BIAS); + + vec3 T, B; + float NH; + make_orthonormal_basis(N, T, B); + vec3 H = sample_ggx(rand.xzw, a2, N, T, B, NH); /* Microfacet normal */ + float pdf = pdf_ggx_reflect(NH, a2); + + /* If ray is bad (i.e. going below the plane) regenerate. */ + if (F_eta(ior, dot(H, V)) < 1.0) { + H = sample_ggx(rand.xzw * vec3(1.0, -1.0, -1.0), a2, N, T, B, NH); /* Microfacet normal */ + pdf = pdf_ggx_reflect(NH, a2); + } + + vec3 vV = viewCameraVec; + float eta = 1.0/ior; + if (dot(H, V) < 0.0) { + H = -H; + eta = ior; + } + + vec3 R = refract(-V, H, 1.0 / ior); + + R = transform_direction(ViewMatrix, R); + + vec3 hit_pos = raycast(-1, viewPosition, R * 1e16, ssrThickness, rand.y, ssrQuality, roughnessSquared, false); + + if ((hit_pos.z > 0.0) && (F_eta(ior, dot(H, V)) < 1.0)) { + hit_pos = get_view_space_from_depth(hit_pos.xy, hit_pos.z); + float hit_dist = distance(hit_pos, viewPosition); + + float cone_cos = cone_cosine(roughnessSquared); + float cone_tan = sqrt(1 - cone_cos * cone_cos) / cone_cos; + + /* Empirical fit for refraction. */ + /* TODO find a better fit or precompute inside the LUT. */ + cone_tan *= 0.5 * fast_sqrt(f0_from_ior((ior < 1.0) ? 1.0 / ior : ior)); + + float cone_footprint = hit_dist * cone_tan; + + /* find the offset in screen space by multiplying a point + * in camera space at the depth of the point by the projection matrix. */ + float homcoord = ProjectionMatrix[2][3] * hit_pos.z + ProjectionMatrix[3][3]; + /* UV space footprint */ + cone_footprint = BTDF_BIAS * 0.5 * max(ProjectionMatrix[0][0], ProjectionMatrix[1][1]) * cone_footprint / homcoord; + + vec2 hit_uvs = project_point(ProjectionMatrix, hit_pos).xy * 0.5 + 0.5; + + /* Texel footprint */ + vec2 texture_size = vec2(textureSize(colorBuffer, 0).xy); + float mip = clamp(log2(cone_footprint * max(texture_size.x, texture_size.y)), 0.0, 9.0); + + /* Correct UVs for mipmaping mis-alignment */ + hit_uvs *= mip_ratio_interp(mip); + + vec3 spec = textureLod(colorBuffer, hit_uvs, mip).xyz; + float mask = screen_border_mask(hit_uvs); + + return vec4(spec, mask); + } + + return vec4(0.0); +} diff --git a/source/blender/draw/engines/eevee/shaders/update_noise_frag.glsl b/source/blender/draw/engines/eevee/shaders/update_noise_frag.glsl new file mode 100644 index 00000000000..2907f25782f --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/update_noise_frag.glsl @@ -0,0 +1,18 @@ + +uniform sampler2D blueNoise; +uniform vec3 offsets; + +out vec4 FragColor; + +#define M_2PI 6.28318530717958647692 + +void main(void) +{ + vec3 blue_noise = texelFetch(blueNoise, ivec2(gl_FragCoord.xy), 0).xyz; + + float noise = fract(blue_noise.y + offsets.z); + FragColor.x = fract(blue_noise.x + offsets.x); + FragColor.y = fract(blue_noise.z + offsets.y); + FragColor.z = cos(noise * M_2PI); + FragColor.w = sin(noise * M_2PI); +} diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl new file mode 100644 index 00000000000..3a293647f84 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_frag.glsl @@ -0,0 +1,63 @@ + +/* Based on Frosbite Unified Volumetric. + * https://www.ea.com/frostbite/news/physically-based-unified-volumetric-rendering-in-frostbite */ + +#define NODETREE_EXEC + +#ifdef MESH_SHADER +uniform mat4 volumeObjectMatrix; +uniform vec3 volumeOrcoLoc; +uniform vec3 volumeOrcoSize; +#endif + +flat in int slice; + +/* Warning: theses are not attributes, theses are global vars. */ +vec3 worldPosition = vec3(0.0); +vec3 viewPosition = vec3(0.0); +vec3 viewNormal = vec3(0.0); +#ifdef MESH_SHADER +vec3 volumeObjectLocalCoord = vec3(0.0); +#endif + +layout(location = 0) out vec4 volumeScattering; +layout(location = 1) out vec4 volumeExtinction; +layout(location = 2) out vec4 volumeEmissive; +layout(location = 3) out vec4 volumePhase; + +/* Store volumetric properties into the froxel textures. */ + +void main() +{ + ivec3 volume_cell = ivec3(gl_FragCoord.xy, slice); + vec3 ndc_cell = volume_to_ndc((vec3(volume_cell) + volJitter.xyz) * volInvTexSize.xyz); + + viewPosition = get_view_space_from_depth(ndc_cell.xy, ndc_cell.z); + worldPosition = transform_point(ViewMatrixInverse, viewPosition); +#ifdef MESH_SHADER + volumeObjectLocalCoord = transform_point(volumeObjectMatrix, worldPosition); + volumeObjectLocalCoord = (volumeObjectLocalCoord - volumeOrcoLoc + volumeOrcoSize) / (volumeOrcoSize * 2.0); + + if (any(lessThan(volumeObjectLocalCoord, vec3(0.0))) || + any(greaterThan(volumeObjectLocalCoord, vec3(1.0)))) + discard; +#endif + +#ifdef CLEAR + Closure cl = CLOSURE_DEFAULT; +#else + Closure cl = nodetree_exec(); +#endif + + volumeScattering = vec4(cl.scatter, 1.0); + volumeExtinction = vec4(max(vec3(1e-4), cl.absorption + cl.scatter), 1.0); + volumeEmissive = vec4(cl.emission, 1.0); + + /* Do not add phase weight if no scattering. */ + if (all(equal(cl.scatter, vec3(0.0)))) { + volumePhase = vec4(0.0); + } + else { + volumePhase = vec4(cl.anisotropy, vec3(1.0)); + } +} diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_geom.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_geom.glsl new file mode 100644 index 00000000000..d435bda4f60 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_geom.glsl @@ -0,0 +1,70 @@ + +#ifdef MESH_SHADER +/* TODO tight slices */ +layout(triangles) in; +layout(triangle_strip, max_vertices=3) out; +#else /* World */ +layout(triangles) in; +layout(triangle_strip, max_vertices=3) out; +#endif + +in vec4 vPos[]; + +flat out int slice; + +#ifdef MESH_SHADER +/* TODO tight slices */ +void main() { + gl_Layer = slice = int(vPos[0].z); + +#ifdef ATTRIB + pass_attrib(0); +#endif + gl_Position = vPos[0].xyww; + EmitVertex(); + +#ifdef ATTRIB + pass_attrib(1); +#endif + gl_Position = vPos[1].xyww; + EmitVertex(); + +#ifdef ATTRIB + pass_attrib(2); +#endif + gl_Position = vPos[2].xyww; + EmitVertex(); + + EndPrimitive(); +} + +#else /* World */ + +/* This is just a pass-through geometry shader that send the geometry + * to the layer corresponding to it's depth. */ + +void main() { + gl_Layer = slice = int(vPos[0].z); + +#ifdef ATTRIB + pass_attrib(0); +#endif + gl_Position = vPos[0].xyww; + EmitVertex(); + +#ifdef ATTRIB + pass_attrib(1); +#endif + gl_Position = vPos[1].xyww; + EmitVertex(); + +#ifdef ATTRIB + pass_attrib(2); +#endif + gl_Position = vPos[2].xyww; + EmitVertex(); + + EndPrimitive(); +} + +#endif diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_integration_frag.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_integration_frag.glsl new file mode 100644 index 00000000000..827d774b290 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_integration_frag.glsl @@ -0,0 +1,63 @@ + +/* Based on Frosbite Unified Volumetric. + * https://www.ea.com/frostbite/news/physically-based-unified-volumetric-rendering-in-frostbite */ + +/* Step 3 : Integrate for each froxel the final amount of light + * scattered back to the viewer and the amount of transmittance. */ + +uniform sampler3D volumeScattering; /* Result of the scatter step */ +uniform sampler3D volumeExtinction; + +flat in int slice; + +layout(location = 0) out vec4 finalScattering; +layout(location = 1) out vec4 finalTransmittance; + +void main() +{ + /* Start with full transmittance and no scattered light. */ + finalScattering = vec4(0.0); + finalTransmittance = vec4(1.0); + + vec3 tex_size = vec3(textureSize(volumeScattering, 0).xyz); + + /* Compute view ray. */ + vec2 uvs = gl_FragCoord.xy / tex_size.xy; + vec3 ndc_cell = volume_to_ndc(vec3(uvs, 1e-5)); + vec3 view_cell = get_view_space_from_depth(ndc_cell.xy, ndc_cell.z); + + /* Ortho */ + float prev_ray_len = view_cell.z; + float orig_ray_len = 1.0; + + /* Persp */ + if (ProjectionMatrix[3][3] == 0.0) { + prev_ray_len = length(view_cell); + orig_ray_len = prev_ray_len / view_cell.z; + } + + /* Without compute shader and arbitrary write we need to + * accumulate from the beginning of the ray for each cell. */ + float integration_end = float(slice); + for (int i = 0; i < slice; ++i) { + ivec3 volume_cell = ivec3(gl_FragCoord.xy, i); + + vec4 Lscat = texelFetch(volumeScattering, volume_cell, 0); + vec4 s_extinction = texelFetch(volumeExtinction, volume_cell, 0); + + float cell_depth = volume_z_to_view_z((float(i) + 1.0) / tex_size.z); + float ray_len = orig_ray_len * cell_depth; + + /* Evaluate Scattering */ + float s_len = abs(ray_len - prev_ray_len); + prev_ray_len = ray_len; + vec4 Tr = exp(-s_extinction * s_len); + + /* integrate along the current step segment */ + Lscat = (Lscat - Lscat * Tr) / s_extinction; + /* accumulate and also take into account the transmittance from previous steps */ + finalScattering += finalTransmittance * Lscat; + + finalTransmittance *= Tr; + } +} diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_lib.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_lib.glsl new file mode 100644 index 00000000000..ae36252153f --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_lib.glsl @@ -0,0 +1,155 @@ + +/* Based on Frosbite Unified Volumetric. + * https://www.ea.com/frostbite/news/physically-based-unified-volumetric-rendering-in-frostbite */ + +/* Volume slice to view space depth. */ +float volume_z_to_view_z(float z) +{ + if (ProjectionMatrix[3][3] == 0.0) { + /* Exponential distribution */ + return (exp2(z / volDepthParameters.z) - volDepthParameters.x) / volDepthParameters.y; + } + else { + /* Linear distribution */ + return mix(volDepthParameters.x, volDepthParameters.y, z); + } +} + +float view_z_to_volume_z(float depth) +{ + if (ProjectionMatrix[3][3] == 0.0) { + /* Exponential distribution */ + return volDepthParameters.z * log2(depth * volDepthParameters.y + volDepthParameters.x); + } + else { + /* Linear distribution */ + return (depth - volDepthParameters.x) * volDepthParameters.z; + } +} + +/* Volume texture normalized coordinates to NDC (special range [0, 1]). */ +vec3 volume_to_ndc(vec3 cos) +{ + cos.z = volume_z_to_view_z(cos.z); + cos.z = get_depth_from_view_z(cos.z); + cos.xy /= volCoordScale.xy; + return cos; +} + +vec3 ndc_to_volume(vec3 cos) +{ + cos.z = get_view_z_from_depth(cos.z); + cos.z = view_z_to_volume_z(cos.z); + cos.xy *= volCoordScale.xy; + return cos; +} + +float phase_function_isotropic() +{ + return 1.0 / (4.0 * M_PI); +} + +float phase_function(vec3 v, vec3 l, float g) +{ + /* Henyey-Greenstein */ + float cos_theta = dot(v, l); + g = clamp(g, -1.0 + 1e-3, 1.0 - 1e-3); + float sqr_g = g * g; + return (1- sqr_g) / max(1e-8, 4.0 * M_PI * pow(1 + sqr_g - 2 * g * cos_theta, 3.0 / 2.0)); +} + +#ifdef LAMPS_LIB +vec3 light_volume(LightData ld, vec4 l_vector) +{ + float power; + /* TODO : Area lighting ? */ + /* XXX : Removing Area Power. */ + /* TODO : put this out of the shader. */ + /* See eevee_light_setup(). */ + if (ld.l_type == AREA_RECT || ld.l_type == AREA_ELLIPSE) { + power = (ld.l_sizex * ld.l_sizey * 4.0 * M_PI) * (1.0 / 80.0); + if (ld.l_type == AREA_ELLIPSE) { + power *= M_PI * 0.25; + } + power *= 20.0 * max(0.0, dot(-ld.l_forward, l_vector.xyz / l_vector.w)); /* XXX ad hoc, empirical */ + } + else if (ld.l_type == SUN) { + power = ld.l_radius * ld.l_radius * M_PI; /* Removing area light power*/ + power /= 1.0f + (ld.l_radius * ld.l_radius * 0.5f); + power *= M_PI * 0.5; /* Matching cycles. */ + } + else { + power = (4.0 * ld.l_radius * ld.l_radius) * (1.0 /10.0); + power *= M_2PI; /* Matching cycles with point light. */ + } + + power /= (l_vector.w * l_vector.w); + + /* OPTI: find a better way than calculating this on the fly */ + float lum = dot(ld.l_color, vec3(0.3, 0.6, 0.1)); /* luminance approx. */ + vec3 tint = (lum > 0.0) ? ld.l_color / lum : vec3(1.0); /* normalize lum. to isolate hue+sat */ + + lum = min(lum * power, volLightClamp); + + return tint * lum; +} + +#define VOLUMETRIC_SHADOW_MAX_STEP 32.0 + +vec3 participating_media_extinction(vec3 wpos, sampler3D volume_extinction) +{ + /* Waiting for proper volume shadowmaps and out of frustum shadow map. */ + vec3 ndc = project_point(ViewProjectionMatrix, wpos); + vec3 volume_co = ndc_to_volume(ndc * 0.5 + 0.5); + + /* Let the texture be clamped to edge. This reduce visual glitches. */ + return texture(volume_extinction, volume_co).rgb; +} + +vec3 light_volume_shadow(LightData ld, vec3 ray_wpos, vec4 l_vector, sampler3D volume_extinction) +{ +#if defined(VOLUME_SHADOW) + /* Heterogeneous volume shadows */ + float dd = l_vector.w / volShadowSteps; + vec3 L = l_vector.xyz * l_vector.w; + vec3 shadow = vec3(1.0); + for (float s = 0.5; s < VOLUMETRIC_SHADOW_MAX_STEP && s < (volShadowSteps - 0.1); s += 1.0) { + vec3 pos = ray_wpos + L * (s / volShadowSteps); + vec3 s_extinction = participating_media_extinction(pos, volume_extinction); + shadow *= exp(-s_extinction * dd); + } + return shadow; +#else + return vec3(1.0); +#endif /* VOLUME_SHADOW */ +} +#endif + +#ifdef IRRADIANCE_LIB +vec3 irradiance_volumetric(vec3 wpos) +{ +#ifdef IRRADIANCE_HL2 + IrradianceData ir_data = load_irradiance_cell(0, vec3(1.0)); + vec3 irradiance = ir_data.cubesides[0] + ir_data.cubesides[1] + ir_data.cubesides[2]; + ir_data = load_irradiance_cell(0, vec3(-1.0)); + irradiance += ir_data.cubesides[0] + ir_data.cubesides[1] + ir_data.cubesides[2]; + irradiance *= 0.16666666; /* 1/6 */ + return irradiance; +#else + return vec3(0.0); +#endif +} +#endif + +uniform sampler3D inScattering; +uniform sampler3D inTransmittance; + +vec4 volumetric_resolve(vec4 scene_color, vec2 frag_uvs, float frag_depth) +{ + vec3 volume_cos = ndc_to_volume(vec3(frag_uvs, frag_depth)); + + vec3 scattering = texture(inScattering, volume_cos).rgb; + vec3 transmittance = texture(inTransmittance, volume_cos).rgb; + + return vec4(scene_color.rgb * transmittance + scattering, scene_color.a); +} diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_resolve_frag.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_resolve_frag.glsl new file mode 100644 index 00000000000..0115b2cb99e --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_resolve_frag.glsl @@ -0,0 +1,21 @@ + +/* Based on Frosbite Unified Volumetric. + * https://www.ea.com/frostbite/news/physically-based-unified-volumetric-rendering-in-frostbite */ + +/* Step 4 : Apply final integration on top of the scene color. + * Note that we do the blending ourself instead of relying + * on hardware blending which would require 2 pass. */ + +uniform sampler2D inSceneColor; +uniform sampler2D inSceneDepth; + +out vec4 FragColor; + +void main() +{ + vec2 uvs = gl_FragCoord.xy / vec2(textureSize(inSceneDepth, 0)); + vec4 scene_color = texture(inSceneColor, uvs); + float scene_depth = texture(inSceneDepth, uvs).r; + + FragColor = volumetric_resolve(scene_color, uvs, scene_depth); +} diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_scatter_frag.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_scatter_frag.glsl new file mode 100644 index 00000000000..fcbb6661b14 --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_scatter_frag.glsl @@ -0,0 +1,75 @@ + +/* Based on Frosbite Unified Volumetric. + * https://www.ea.com/frostbite/news/physically-based-unified-volumetric-rendering-in-frostbite */ + +/* Step 2 : Evaluate all light scattering for each froxels. + * Also do the temporal reprojection to fight aliasing artifacts. */ + +uniform sampler3D volumeScattering; +uniform sampler3D volumeExtinction; +uniform sampler3D volumeEmission; +uniform sampler3D volumePhase; + +uniform sampler3D historyScattering; +uniform sampler3D historyTransmittance; + +flat in int slice; + +layout(location = 0) out vec4 outScattering; +layout(location = 1) out vec4 outTransmittance; + +void main() +{ + ivec3 volume_cell = ivec3(gl_FragCoord.xy, slice); + + /* Emission */ + outScattering = texelFetch(volumeEmission, volume_cell, 0); + outTransmittance = texelFetch(volumeExtinction, volume_cell, 0); + vec3 s_scattering = texelFetch(volumeScattering, volume_cell, 0).rgb; + vec3 volume_ndc = volume_to_ndc((vec3(volume_cell) + volJitter.xyz) * volInvTexSize.xyz); + vec3 worldPosition = get_world_space_from_depth(volume_ndc.xy, volume_ndc.z); + vec3 wdir = cameraVec; + + vec2 phase = texelFetch(volumePhase, volume_cell, 0).rg; + float s_anisotropy = phase.x / max(1.0, phase.y); + + /* Environment : Average color. */ + outScattering.rgb += irradiance_volumetric(worldPosition) * s_scattering * phase_function_isotropic(); + +#ifdef VOLUME_LIGHTING /* Lights */ + for (int i = 0; i < MAX_LIGHT && i < laNumLight; ++i) { + + LightData ld = lights_data[i]; + + vec4 l_vector; + l_vector.xyz = (ld.l_type == SUN) ? -ld.l_forward : ld.l_position - worldPosition; + l_vector.w = length(l_vector.xyz); + + float Vis = light_visibility(ld, worldPosition, l_vector); + + vec3 Li = light_volume(ld, l_vector) * light_volume_shadow(ld, worldPosition, l_vector, volumeExtinction); + + outScattering.rgb += Li * Vis * s_scattering * phase_function(-wdir, l_vector.xyz / l_vector.w, s_anisotropy); + } +#endif + + /* Temporal supersampling */ + /* Note : this uses the cell non-jittered position (texel center). */ + vec3 curr_ndc = volume_to_ndc(vec3(gl_FragCoord.xy, float(slice) + 0.5) * volInvTexSize.xyz); + vec3 wpos = get_world_space_from_depth(curr_ndc.xy, curr_ndc.z); + vec3 prev_ndc = project_point(pastViewProjectionMatrix, wpos); + vec3 prev_volume = ndc_to_volume(prev_ndc * 0.5 + 0.5); + + if ((volHistoryAlpha > 0.0) && all(greaterThan(prev_volume, vec3(0.0))) && all(lessThan(prev_volume, vec3(1.0)))) { + vec4 h_Scattering = texture(historyScattering, prev_volume); + vec4 h_Transmittance = texture(historyTransmittance, prev_volume); + outScattering = mix(outScattering, h_Scattering, volHistoryAlpha); + outTransmittance = mix(outTransmittance, h_Transmittance, volHistoryAlpha); + } + + /* Catch NaNs */ + if (any(isnan(outScattering)) || any(isnan(outTransmittance))) { + outScattering = vec4(0.0); + outTransmittance = vec4(1.0); + } +} diff --git a/source/blender/draw/engines/eevee/shaders/volumetric_vert.glsl b/source/blender/draw/engines/eevee/shaders/volumetric_vert.glsl new file mode 100644 index 00000000000..a99acd41fbd --- /dev/null +++ b/source/blender/draw/engines/eevee/shaders/volumetric_vert.glsl @@ -0,0 +1,27 @@ + +out vec4 vPos; + +void main() +{ + /* Generate Triangle : less memory fetches from a VBO */ + int v_id = gl_VertexID % 3; /* Vertex Id */ + int t_id = gl_VertexID / 3; /* Triangle Id */ + + /* Crappy diagram + * ex 1 + * | \ + * | \ + * 1 | \ + * | \ + * | \ + * 0 | \ + * | \ + * | \ + * -1 0 --------------- 2 + * -1 0 1 ex + **/ + vPos.x = float(v_id / 2) * 4.0 - 1.0; /* int divisor round down */ + vPos.y = float(v_id % 2) * 4.0 - 1.0; + vPos.z = float(t_id); + vPos.w = 1.0; +} diff --git a/source/blender/draw/engines/external/external_engine.c b/source/blender/draw/engines/external/external_engine.c new file mode 100644 index 00000000000..b2c30ba723c --- /dev/null +++ b/source/blender/draw/engines/external/external_engine.c @@ -0,0 +1,234 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file external_engine.c + * \ingroup draw_engine + * + * Base engine for external render engines. + * We use it for depth and non-mesh objects. + */ + +#include "DRW_render.h" + +#include "DNA_screen_types.h" +#include "DNA_view3d_types.h" + +#include "BKE_icons.h" +#include "BKE_idprop.h" +#include "BKE_main.h" + +#include "ED_view3d.h" +#include "ED_screen.h" + +#include "GPU_glew.h" +#include "GPU_matrix.h" +#include "GPU_shader.h" +#include "GPU_viewport.h" + +#include "external_engine.h" +/* Shaders */ + +#define EXTERNAL_ENGINE "BLENDER_EXTERNAL" + +/* *********** LISTS *********** */ + +/* GPUViewport.storage + * Is freed everytime the viewport engine changes */ +typedef struct EXTERNAL_Storage { + int dummy; +} EXTERNAL_Storage; + +typedef struct EXTERNAL_StorageList { + struct EXTERNAL_Storage *storage; + struct EXTERNAL_PrivateData *g_data; +} EXTERNAL_StorageList; + +typedef struct EXTERNAL_FramebufferList { + struct GPUFrameBuffer *default_fb; +} EXTERNAL_FramebufferList; + +typedef struct EXTERNAL_TextureList { + /* default */ + struct GPUTexture *depth; +} EXTERNAL_TextureList; + +typedef struct EXTERNAL_PassList { + struct DRWPass *depth_pass; +} EXTERNAL_PassList; + +typedef struct EXTERNAL_Data { + void *engine_type; + EXTERNAL_FramebufferList *fbl; + EXTERNAL_TextureList *txl; + EXTERNAL_PassList *psl; + EXTERNAL_StorageList *stl; + char info[GPU_INFO_SIZE]; +} EXTERNAL_Data; + +/* *********** STATIC *********** */ + +static struct { + /* Depth Pre Pass */ + struct GPUShader *depth_sh; +} e_data = {NULL}; /* Engine data */ + +typedef struct EXTERNAL_PrivateData { + DRWShadingGroup *depth_shgrp; +} EXTERNAL_PrivateData; /* Transient data */ + +/* Functions */ + +static void external_engine_init(void *UNUSED(vedata)) +{ + /* Depth prepass */ + if (!e_data.depth_sh) { + e_data.depth_sh = DRW_shader_create_3D_depth_only(); + } +} + +static void external_cache_init(void *vedata) +{ + EXTERNAL_PassList *psl = ((EXTERNAL_Data *)vedata)->psl; + EXTERNAL_StorageList *stl = ((EXTERNAL_Data *)vedata)->stl; + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_mallocN(sizeof(*stl->g_data), __func__); + } + + /* Depth Pass */ + { + psl->depth_pass = DRW_pass_create("Depth Pass", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL); + stl->g_data->depth_shgrp = DRW_shgroup_create(e_data.depth_sh, psl->depth_pass); + } +} + +static void external_cache_populate(void *vedata, Object *ob) +{ + EXTERNAL_StorageList *stl = ((EXTERNAL_Data *)vedata)->stl; + + if (!DRW_object_is_renderable(ob)) + return; + + struct GPUBatch *geom = DRW_cache_object_surface_get(ob); + if (geom) { + /* Depth Prepass */ + DRW_shgroup_call_add(stl->g_data->depth_shgrp, geom, ob->obmat); + } +} + +static void external_cache_finish(void *UNUSED(vedata)) +{ +} + +static void external_draw_scene_do(void *vedata) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + RegionView3D *rv3d = draw_ctx->rv3d; + ARegion *ar = draw_ctx->ar; + RenderEngineType *type; + + DRW_state_reset_ex(DRW_STATE_DEFAULT & ~DRW_STATE_DEPTH_LESS_EQUAL); + + /* Create render engine. */ + if (!rv3d->render_engine) { + RenderEngineType *engine_type = draw_ctx->engine_type; + + if (!(engine_type->view_update && engine_type->view_draw)) { + return; + } + + RenderEngine *engine = RE_engine_create_ex(engine_type, true); + engine->tile_x = scene->r.tilex; + engine->tile_y = scene->r.tiley; + engine_type->view_update(engine, draw_ctx->evil_C); + rv3d->render_engine = engine; + } + + /* Rendered draw. */ + GPU_matrix_push_projection(); + ED_region_pixelspace(ar); + + /* Render result draw. */ + type = rv3d->render_engine->type; + type->view_draw(rv3d->render_engine, draw_ctx->evil_C); + + GPU_matrix_pop_projection(); + + /* Set render info. */ + EXTERNAL_Data *data = vedata; + if (rv3d->render_engine->text[0] != '\0') { + BLI_strncpy(data->info, rv3d->render_engine->text, sizeof(data->info)); + } + else { + data->info[0] = '\0'; + } +} + +static void external_draw_scene(void *vedata) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + EXTERNAL_PassList *psl = ((EXTERNAL_Data *)vedata)->psl; + + /* Will be NULL during OpenGL render. + * OpenGL render is used for quick preview (thumbnails or sequencer preview) + * where using the rendering engine to preview doesn't make so much sense. */ + if (draw_ctx->evil_C) { + external_draw_scene_do(vedata); + } + DRW_draw_pass(psl->depth_pass); +} + +static void external_engine_free(void) +{ + /* All shaders are builtin. */ +} + +static const DrawEngineDataSize external_data_size = DRW_VIEWPORT_DATA_SIZE(EXTERNAL_Data); + +DrawEngineType draw_engine_external_type = { + NULL, NULL, + N_("External"), + &external_data_size, + &external_engine_init, + &external_engine_free, + &external_cache_init, + &external_cache_populate, + &external_cache_finish, + NULL, + &external_draw_scene, + NULL, + NULL, + NULL, +}; + +/* Note: currently unused, we should not register unless we want to see this when debugging the view. */ + +RenderEngineType DRW_engine_viewport_external_type = { + NULL, NULL, + EXTERNAL_ENGINE, N_("External"), RE_INTERNAL, + NULL, NULL, NULL, NULL, NULL, NULL, NULL, + &draw_engine_external_type, + {NULL, NULL, NULL} +}; + +#undef EXTERNAL_ENGINE diff --git a/source/blender/draw/engines/external/external_engine.h b/source/blender/draw/engines/external/external_engine.h new file mode 100644 index 00000000000..1789fb67efe --- /dev/null +++ b/source/blender/draw/engines/external/external_engine.h @@ -0,0 +1,31 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file external_engine.h + * \ingroup draw_engine + */ + +#ifndef __EXTERNAL_ENGINE_H__ +#define __EXTERNAL_ENGINE_H__ + +extern RenderEngineType DRW_engine_viewport_external_type; + +#endif /* __EXTERNAL_ENGINE_H__ */ diff --git a/source/blender/draw/engines/gpencil/gpencil_cache_utils.c b/source/blender/draw/engines/gpencil/gpencil_cache_utils.c new file mode 100644 index 00000000000..5478c4a60b9 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_cache_utils.c @@ -0,0 +1,311 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_cache_utils.c + * \ingroup draw + */ + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "ED_gpencil.h" +#include "ED_view3d.h" + +#include "DNA_gpencil_types.h" +#include "DNA_view3d_types.h" + +#include "BKE_gpencil.h" + +#include "gpencil_engine.h" + +#include "draw_cache_impl.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_query.h" + + /* add a gpencil object to cache to defer drawing */ +tGPencilObjectCache *gpencil_object_cache_add( + tGPencilObjectCache *cache_array, Object *ob, + int *gp_cache_size, int *gp_cache_used) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + tGPencilObjectCache *cache_elem = NULL; + RegionView3D *rv3d = draw_ctx->rv3d; + tGPencilObjectCache *p = NULL; + + /* By default a cache is created with one block with a predefined number of free slots, + if the size is not enough, the cache is reallocated adding a new block of free slots. + This is done in order to keep cache small */ + if (*gp_cache_used + 1 > *gp_cache_size) { + if ((*gp_cache_size == 0) || (cache_array == NULL)) { + p = MEM_callocN(sizeof(struct tGPencilObjectCache) * GP_CACHE_BLOCK_SIZE, "tGPencilObjectCache"); + *gp_cache_size = GP_CACHE_BLOCK_SIZE; + } + else { + *gp_cache_size += GP_CACHE_BLOCK_SIZE; + p = MEM_recallocN(cache_array, sizeof(struct tGPencilObjectCache) * *gp_cache_size); + } + cache_array = p; + } + /* zero out all pointers */ + cache_elem = &cache_array[*gp_cache_used]; + memset(cache_elem, 0, sizeof(*cache_elem)); + + Object *ob_orig = (Object *)DEG_get_original_id(&ob->id); + cache_elem->ob = ob_orig; + cache_elem->gpd = (bGPdata *)ob_orig->data; + copy_v3_v3(cache_elem->loc, ob->loc); + copy_m4_m4(cache_elem->obmat, ob->obmat); + cache_elem->idx = *gp_cache_used; + + /* object is duplicated (particle) */ + cache_elem->is_dup_ob = ob->base_flag & BASE_FROMDUPLI; + + /* save FXs */ + cache_elem->pixfactor = cache_elem->gpd->pixfactor; + cache_elem->shader_fx = ob_orig->shader_fx; + + /* shgrp array */ + cache_elem->tot_layers = 0; + int totgpl = BLI_listbase_count(&cache_elem->gpd->layers); + if (totgpl > 0) { + cache_elem->shgrp_array = MEM_callocN(sizeof(tGPencilObjectCache_shgrp) * totgpl, __func__); + } + + /* calculate zdepth from point of view */ + float zdepth = 0.0; + if (rv3d) { + if (rv3d->is_persp) { + zdepth = ED_view3d_calc_zfac(rv3d, ob->loc, NULL); + } + else { + zdepth = -dot_v3v3(rv3d->viewinv[2], ob->loc); + } + } + else { + /* In render mode, rv3d is not available, so use the distance to camera. + * The real distance is not important, but the relative distance to the camera plane + * in order to sort by z_depth of the objects + */ + float vn[3] = { 0.0f, 0.0f, -1.0f }; /* always face down */ + float plane_cam[4]; + struct Object *camera = draw_ctx->scene->camera; + if (camera) { + mul_m4_v3(camera->obmat, vn); + normalize_v3(vn); + plane_from_point_normal_v3(plane_cam, camera->loc, vn); + zdepth = dist_squared_to_plane_v3(ob->loc, plane_cam); + } + } + cache_elem->zdepth = zdepth; + /* increase slots used in cache */ + (*gp_cache_used)++; + + return cache_array; +} + +/* add a shading group to the cache to create later */ +GpencilBatchGroup *gpencil_group_cache_add( + GpencilBatchGroup *cache_array, + bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps, + const short type, const bool onion, + const int vertex_idx, + int *grp_size, int *grp_used) +{ + GpencilBatchGroup *cache_elem = NULL; + GpencilBatchGroup *p = NULL; + + /* By default a cache is created with one block with a predefined number of free slots, + if the size is not enough, the cache is reallocated adding a new block of free slots. + This is done in order to keep cache small */ + if (*grp_used + 1 > *grp_size) { + if ((*grp_size == 0) || (cache_array == NULL)) { + p = MEM_callocN(sizeof(struct GpencilBatchGroup) * GPENCIL_GROUPS_BLOCK_SIZE, "GpencilBatchGroup"); + *grp_size = GPENCIL_GROUPS_BLOCK_SIZE; + } + else { + *grp_size += GPENCIL_GROUPS_BLOCK_SIZE; + p = MEM_recallocN(cache_array, sizeof(struct GpencilBatchGroup) * *grp_size); + } + cache_array = p; + } + /* zero out all data */ + cache_elem = &cache_array[*grp_used]; + memset(cache_elem, 0, sizeof(*cache_elem)); + + cache_elem->gpl = gpl; + cache_elem->gpf = gpf; + cache_elem->gps = gps; + cache_elem->type = type; + cache_elem->onion = onion; + cache_elem->vertex_idx = vertex_idx; + + /* increase slots used in cache */ + (*grp_used)++; + + return cache_array; +} + +/* get current cache data */ +static GpencilBatchCache *gpencil_batch_get_element(Object *ob) +{ + Object *ob_orig = (Object *)DEG_get_original_id(&ob->id); + return ob_orig->runtime.gpencil_cache; +} + +/* verify if cache is valid */ +static bool gpencil_batch_cache_valid(GpencilBatchCache *cache, bGPdata *gpd, int cfra) +{ + bool valid = true; + if (cache == NULL) { + return false; + } + + cache->is_editmode = GPENCIL_ANY_EDIT_MODE(gpd); + if (cfra != cache->cache_frame) { + valid = false; + } + else if (gpd->flag & GP_DATA_CACHE_IS_DIRTY) { + valid = false; + } + else if (gpd->flag & GP_DATA_SHOW_ONIONSKINS) { + /* if onion, set as dirty always + * This reduces performance, but avoid any crash in the multiple + * overlay and multiwindow options and keep all windows working + */ + valid = false; + } + else if (cache->is_editmode) { + valid = false; + } + else if (cache->is_dirty) { + valid = false; + } + + return valid; +} + +/* cache init */ +static GpencilBatchCache *gpencil_batch_cache_init(Object *ob, int cfra) +{ + Object *ob_orig = (Object *)DEG_get_original_id(&ob->id); + bGPdata *gpd = (bGPdata *)ob_orig->data; + + GpencilBatchCache *cache = gpencil_batch_get_element(ob); + + if (!cache) { + cache = MEM_callocN(sizeof(*cache), __func__); + ob_orig->runtime.gpencil_cache = cache; + } + else { + memset(cache, 0, sizeof(*cache)); + } + + cache->is_editmode = GPENCIL_ANY_EDIT_MODE(gpd); + + cache->is_dirty = true; + + cache->cache_frame = cfra; + + /* create array of derived frames equal to number of layers */ + cache->tot_layers = BLI_listbase_count(&gpd->layers); + CLAMP_MIN(cache->tot_layers, 1); + cache->derived_array = MEM_callocN(sizeof(struct bGPDframe) * cache->tot_layers, "Derived GPF"); + + return cache; +} + +/* clear cache */ +static void gpencil_batch_cache_clear(GpencilBatchCache *cache) +{ + if (!cache) { + return; + } + + GPU_BATCH_DISCARD_SAFE(cache->b_stroke.batch); + GPU_BATCH_DISCARD_SAFE(cache->b_point.batch); + GPU_BATCH_DISCARD_SAFE(cache->b_fill.batch); + GPU_BATCH_DISCARD_SAFE(cache->b_edit.batch); + GPU_BATCH_DISCARD_SAFE(cache->b_edlin.batch); + + MEM_SAFE_FREE(cache->b_stroke.batch); + MEM_SAFE_FREE(cache->b_point.batch); + MEM_SAFE_FREE(cache->b_fill.batch); + MEM_SAFE_FREE(cache->b_edit.batch); + MEM_SAFE_FREE(cache->b_edlin.batch); + + MEM_SAFE_FREE(cache->grp_cache); + cache->grp_size = 0; + cache->grp_used = 0; + + /* clear all frames derived data */ + for (int i = 0; i < cache->tot_layers; i++) { + bGPDframe *derived_gpf = &cache->derived_array[i]; + BKE_gpencil_free_frame_runtime_data(derived_gpf); + derived_gpf = NULL; + } + cache->tot_layers = 0; + MEM_SAFE_FREE(cache->derived_array); +} + +/* get cache */ +GpencilBatchCache *gpencil_batch_cache_get(Object *ob, int cfra) +{ + Object *ob_orig = (Object *)DEG_get_original_id(&ob->id); + bGPdata *gpd = (bGPdata *)ob_orig->data; + + GpencilBatchCache *cache = gpencil_batch_get_element(ob); + if (!gpencil_batch_cache_valid(cache, gpd, cfra)) { + if (cache) { + gpencil_batch_cache_clear(cache); + } + return gpencil_batch_cache_init(ob, cfra); + } + else { + return cache; + } +} + +/* set cache as dirty */ +void DRW_gpencil_batch_cache_dirty_tag(bGPdata *gpd) +{ + bGPdata *gpd_orig = (bGPdata *)DEG_get_original_id(&gpd->id); + gpd_orig->flag |= GP_DATA_CACHE_IS_DIRTY; +} + +/* free batch cache */ +void DRW_gpencil_batch_cache_free(bGPdata *UNUSED(gpd)) +{ + return; +} + +/* wrapper to clear cache */ +void DRW_gpencil_freecache(struct Object *ob) +{ + if ((ob) && (ob->type == OB_GPENCIL)) { + gpencil_batch_cache_clear(ob->runtime.gpencil_cache); + MEM_SAFE_FREE(ob->runtime.gpencil_cache); + bGPdata *gpd = (bGPdata *)ob->data; + if (gpd) { + gpd->flag |= GP_DATA_CACHE_IS_DIRTY; + } + } +} diff --git a/source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c b/source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c new file mode 100644 index 00000000000..1afb5daa912 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_draw_cache_impl.c @@ -0,0 +1,727 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2008, Blender Foundation + * This is a new part of Blender + * + * Contributor(s): Antonio Vazquez + * + * ***** END GPL LICENSE BLOCK ***** + */ + +/** \file draw/engines/gpencil/gpencil_draw_cache_impl.c + * \ingroup draw + */ + +#include "BLI_polyfill_2d.h" +#include "BLI_math_color.h" + +#include "DNA_meshdata_types.h" +#include "DNA_gpencil_types.h" +#include "DNA_screen_types.h" +#include "DNA_view3d_types.h" + +#include "BKE_action.h" +#include "BKE_deform.h" +#include "BKE_gpencil.h" + +#include "DRW_render.h" + +#include "GPU_immediate.h" +#include "GPU_draw.h" + +#include "ED_gpencil.h" +#include "ED_view3d.h" + +#include "UI_resources.h" + +#include "gpencil_engine.h" + +/* Helper to add stroke point to vbo */ +static void gpencil_set_stroke_point( + GPUVertBuf *vbo, const bGPDspoint *pt, int idx, + uint pos_id, uint color_id, + uint thickness_id, uint uvdata_id, short thickness, + const float ink[4]) +{ + + float alpha = ink[3] * pt->strength; + CLAMP(alpha, GPENCIL_STRENGTH_MIN, 1.0f); + float col[4]; + ARRAY_SET_ITEMS(col, ink[0], ink[1], ink[2], alpha); + + GPU_vertbuf_attr_set(vbo, color_id, idx, col); + + /* transfer both values using the same shader variable */ + float uvdata[2] = { pt->uv_fac, pt->uv_rot }; + GPU_vertbuf_attr_set(vbo, uvdata_id, idx, uvdata); + + /* the thickness of the stroke must be affected by zoom, so a pixel scale is calculated */ + float thick = max_ff(pt->pressure * thickness, 1.0f); + GPU_vertbuf_attr_set(vbo, thickness_id, idx, &thick); + + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); +} + +/* Helper to add a new fill point and texture coordinates to vertex buffer */ +static void gpencil_set_fill_point( + GPUVertBuf *vbo, int idx, bGPDspoint *pt, const float fcolor[4], float uv[2], + uint pos_id, uint color_id, uint text_id) +{ + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt->x); + GPU_vertbuf_attr_set(vbo, color_id, idx, fcolor); + GPU_vertbuf_attr_set(vbo, text_id, idx, uv); +} + +static void gpencil_vbo_ensure_size(GpencilBatchCacheElem *be, int totvertex) +{ + if (be->vbo->vertex_alloc <= be->vbo_len + totvertex) { + uint newsize = be->vbo->vertex_alloc + (((totvertex / GPENCIL_VBO_BLOCK_SIZE) + 1) * GPENCIL_VBO_BLOCK_SIZE); + GPU_vertbuf_data_resize(be->vbo, newsize); + } +} + +/* create batch geometry data for points stroke shader */ +void DRW_gpencil_get_point_geom(GpencilBatchCacheElem *be, bGPDstroke *gps, short thickness, const float ink[4]) +{ + int totvertex = gps->totpoints; + if (be->vbo == NULL) { + be->pos_id = GPU_vertformat_attr_add(&be->format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + be->color_id = GPU_vertformat_attr_add(&be->format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + be->thickness_id = GPU_vertformat_attr_add(&be->format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + be->uvdata_id = GPU_vertformat_attr_add(&be->format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + + be->vbo = GPU_vertbuf_create_with_format(&be->format); + GPU_vertbuf_data_alloc(be->vbo, be->tot_vertex); + be->vbo_len = 0; + } + gpencil_vbo_ensure_size(be, totvertex); + + /* draw stroke curve */ + const bGPDspoint *pt = gps->points; + float alpha; + float col[4]; + + for (int i = 0; i < gps->totpoints; i++, pt++) { + /* set point */ + alpha = ink[3] * pt->strength; + CLAMP(alpha, GPENCIL_STRENGTH_MIN, 1.0f); + ARRAY_SET_ITEMS(col, ink[0], ink[1], ink[2], alpha); + + float thick = max_ff(pt->pressure * thickness, 1.0f); + + GPU_vertbuf_attr_set(be->vbo, be->color_id, be->vbo_len, col); + GPU_vertbuf_attr_set(be->vbo, be->thickness_id, be->vbo_len, &thick); + + /* transfer both values using the same shader variable */ + float uvdata[2] = { pt->uv_fac, pt->uv_rot }; + GPU_vertbuf_attr_set(be->vbo, be->uvdata_id, be->vbo_len, uvdata); + + GPU_vertbuf_attr_set(be->vbo, be->pos_id, be->vbo_len, &pt->x); + be->vbo_len++; + } +} + +/* create batch geometry data for stroke shader */ +void DRW_gpencil_get_stroke_geom(struct GpencilBatchCacheElem *be, bGPDstroke *gps, short thickness, const float ink[4]) +{ + bGPDspoint *points = gps->points; + int totpoints = gps->totpoints; + /* if cyclic needs more vertex */ + int cyclic_add = (gps->flag & GP_STROKE_CYCLIC) ? 1 : 0; + int totvertex = totpoints + cyclic_add + 2; + + if (be->vbo == NULL) { + be->pos_id = GPU_vertformat_attr_add(&be->format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + be->color_id = GPU_vertformat_attr_add(&be->format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + be->thickness_id = GPU_vertformat_attr_add(&be->format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + be->uvdata_id = GPU_vertformat_attr_add(&be->format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + + be->vbo = GPU_vertbuf_create_with_format(&be->format); + GPU_vertbuf_data_alloc(be->vbo, be->tot_vertex); + be->vbo_len = 0; + } + gpencil_vbo_ensure_size(be, totvertex); + + /* draw stroke curve */ + const bGPDspoint *pt = points; + for (int i = 0; i < totpoints; i++, pt++) { + /* first point for adjacency (not drawn) */ + if (i == 0) { + if (gps->flag & GP_STROKE_CYCLIC && totpoints > 2) { + gpencil_set_stroke_point( + be->vbo, &points[totpoints - 1], be->vbo_len, + be->pos_id, be->color_id, be->thickness_id, be->uvdata_id, thickness, ink); + be->vbo_len++; + } + else { + gpencil_set_stroke_point( + be->vbo, &points[1], be->vbo_len, + be->pos_id, be->color_id, be->thickness_id, be->uvdata_id, thickness, ink); + be->vbo_len++; + } + } + /* set point */ + gpencil_set_stroke_point( + be->vbo, pt, be->vbo_len, + be->pos_id, be->color_id, be->thickness_id, be->uvdata_id, thickness, ink); + be->vbo_len++; + } + + if (gps->flag & GP_STROKE_CYCLIC && totpoints > 2) { + /* draw line to first point to complete the cycle */ + gpencil_set_stroke_point( + be->vbo, &points[0], be->vbo_len, + be->pos_id, be->color_id, be->thickness_id, be->uvdata_id, thickness, ink); + be->vbo_len++; + /* now add adjacency point (not drawn) */ + gpencil_set_stroke_point( + be->vbo, &points[1], be->vbo_len, + be->pos_id, be->color_id, be->thickness_id, be->uvdata_id, thickness, ink); + be->vbo_len++; + } + /* last adjacency point (not drawn) */ + else { + gpencil_set_stroke_point( + be->vbo, &points[totpoints - 2], be->vbo_len, + be->pos_id, be->color_id, be->thickness_id, be->uvdata_id, thickness, ink); + be->vbo_len++; + } +} + +/* create batch geometry data for stroke shader */ +void DRW_gpencil_get_fill_geom(struct GpencilBatchCacheElem *be, Object *ob, bGPDstroke *gps, const float color[4]) +{ + BLI_assert(gps->totpoints >= 3); + + /* Calculate triangles cache for filling area (must be done only after changes) */ + if ((gps->flag & GP_STROKE_RECALC_CACHES) || (gps->tot_triangles == 0) || (gps->triangles == NULL)) { + DRW_gpencil_triangulate_stroke_fill(ob, gps); + ED_gpencil_calc_stroke_uv(ob, gps); + } + + BLI_assert(gps->tot_triangles >= 1); + int totvertex = gps->tot_triangles * 3; + + if (be->vbo == NULL) { + be->pos_id = GPU_vertformat_attr_add(&be->format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + be->color_id = GPU_vertformat_attr_add(&be->format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + be->uvdata_id = GPU_vertformat_attr_add(&be->format, "texCoord", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + + be->vbo = GPU_vertbuf_create_with_format(&be->format); + GPU_vertbuf_data_alloc(be->vbo, be->tot_vertex); + be->vbo_len = 0; + } + gpencil_vbo_ensure_size(be, totvertex); + + /* Draw all triangles for filling the polygon (cache must be calculated before) */ + bGPDtriangle *stroke_triangle = gps->triangles; + for (int i = 0; i < gps->tot_triangles; i++, stroke_triangle++) { + for (int j = 0; j < 3; j++) { + gpencil_set_fill_point( + be->vbo, be->vbo_len, &gps->points[stroke_triangle->verts[j]], color, stroke_triangle->uv[j], + be->pos_id, be->color_id, be->uvdata_id); + be->vbo_len++; + } + } +} + +/* create batch geometry data for current buffer stroke shader */ +GPUBatch *DRW_gpencil_get_buffer_stroke_geom(bGPdata *gpd, short thickness) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + ARegion *ar = draw_ctx->ar; + RegionView3D *rv3d = draw_ctx->rv3d; + ToolSettings *ts = scene->toolsettings; + Object *ob = draw_ctx->obact; + + tGPspoint *points = gpd->runtime.sbuffer; + int totpoints = gpd->runtime.sbuffer_size; + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, thickness_id, uvdata_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + thickness_id = GPU_vertformat_attr_add(&format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + uvdata_id = GPU_vertformat_attr_add(&format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, totpoints + 2); + + /* draw stroke curve */ + const tGPspoint *tpt = points; + bGPDspoint pt, pt2; + int idx = 0; + + /* get origin to reproject point */ + float origin[3]; + bGPDlayer *gpl = BKE_gpencil_layer_getactive(gpd); + ED_gp_get_drawing_reference(scene, ob, gpl, ts->gpencil_v3d_align, origin); + + for (int i = 0; i < totpoints; i++, tpt++) { + ED_gpencil_tpoint_to_point(ar, origin, tpt, &pt); + ED_gp_project_point_to_plane(ob, rv3d, origin, ts->gp_sculpt.lock_axis - 1, &pt); + + /* first point for adjacency (not drawn) */ + if (i == 0) { + if (totpoints > 1) { + ED_gpencil_tpoint_to_point(ar, origin, &points[1], &pt2); + gpencil_set_stroke_point( + vbo, &pt2, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + else { + gpencil_set_stroke_point( + vbo, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + idx++; + } + /* set point */ + gpencil_set_stroke_point( + vbo, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + idx++; + } + + /* last adjacency point (not drawn) */ + if (totpoints > 2) { + ED_gpencil_tpoint_to_point(ar, origin, &points[totpoints - 2], &pt2); + gpencil_set_stroke_point( + vbo, &pt2, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + else { + gpencil_set_stroke_point( + vbo, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, thickness, gpd->runtime.scolor); + } + + return GPU_batch_create_ex(GPU_PRIM_LINE_STRIP_ADJ, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for current buffer point shader */ +GPUBatch *DRW_gpencil_get_buffer_point_geom(bGPdata *gpd, short thickness) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + ARegion *ar = draw_ctx->ar; + RegionView3D *rv3d = draw_ctx->rv3d; + ToolSettings *ts = scene->toolsettings; + Object *ob = draw_ctx->obact; + + tGPspoint *points = gpd->runtime.sbuffer; + int totpoints = gpd->runtime.sbuffer_size; + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id, thickness_id, uvdata_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + thickness_id = GPU_vertformat_attr_add(&format, "thickness", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + uvdata_id = GPU_vertformat_attr_add(&format, "uvdata", GPU_COMP_F32, 2, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, totpoints); + + /* draw stroke curve */ + const tGPspoint *tpt = points; + bGPDspoint pt; + int idx = 0; + + /* get origin to reproject point */ + float origin[3]; + bGPDlayer *gpl = BKE_gpencil_layer_getactive(gpd); + ED_gp_get_drawing_reference(scene, ob, gpl, ts->gpencil_v3d_align, origin); + + for (int i = 0; i < totpoints; i++, tpt++) { + ED_gpencil_tpoint_to_point(ar, origin, tpt, &pt); + ED_gp_project_point_to_plane(ob, rv3d, origin, ts->gp_sculpt.lock_axis - 1, &pt); + + /* set point */ + gpencil_set_stroke_point( + vbo, &pt, idx, + pos_id, color_id, thickness_id, uvdata_id, + thickness, gpd->runtime.scolor); + idx++; + } + + return GPU_batch_create_ex(GPU_PRIM_POINTS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* create batch geometry data for current buffer fill shader */ +GPUBatch *DRW_gpencil_get_buffer_fill_geom(bGPdata *gpd) +{ + if (gpd == NULL) { + return NULL; + } + + const tGPspoint *points = gpd->runtime.sbuffer; + int totpoints = gpd->runtime.sbuffer_size; + if (totpoints < 3) { + return NULL; + } + + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + ARegion *ar = draw_ctx->ar; + ToolSettings *ts = scene->toolsettings; + Object *ob = draw_ctx->obact; + + /* get origin to reproject point */ + float origin[3]; + bGPDlayer *gpl = BKE_gpencil_layer_getactive(gpd); + ED_gp_get_drawing_reference(scene, ob, gpl, ts->gpencil_v3d_align, origin); + + int tot_triangles = totpoints - 2; + /* allocate memory for temporary areas */ + uint (*tmp_triangles)[3] = MEM_mallocN(sizeof(*tmp_triangles) * tot_triangles, __func__); + float (*points2d)[2] = MEM_mallocN(sizeof(*points2d) * totpoints, __func__); + + /* Convert points to array and triangulate + * Here a cache is not used because while drawing the information changes all the time, so the cache + * would be recalculated constantly, so it is better to do direct calculation for each function call + */ + for (int i = 0; i < totpoints; i++) { + const tGPspoint *pt = &points[i]; + points2d[i][0] = pt->x; + points2d[i][1] = pt->y; + } + BLI_polyfill_calc(points2d, (uint)totpoints, 0, tmp_triangles); + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + + /* draw triangulation data */ + if (tot_triangles > 0) { + GPU_vertbuf_data_alloc(vbo, tot_triangles * 3); + + const tGPspoint *tpt; + bGPDspoint pt; + + int idx = 0; + for (int i = 0; i < tot_triangles; i++) { + for (int j = 0; j < 3; j++) { + tpt = &points[tmp_triangles[i][j]]; + ED_gpencil_tpoint_to_point(ar, origin, tpt, &pt); + GPU_vertbuf_attr_set(vbo, pos_id, idx, &pt.x); + GPU_vertbuf_attr_set(vbo, color_id, idx, gpd->runtime.sfill); + idx++; + } + } + } + + /* clear memory */ + if (tmp_triangles) { + MEM_freeN(tmp_triangles); + } + if (points2d) { + MEM_freeN(points2d); + } + + return GPU_batch_create_ex(GPU_PRIM_TRIS, vbo, NULL, GPU_BATCH_OWNS_VBO); +} + +/* Draw selected verts for strokes being edited */ +void DRW_gpencil_get_edit_geom(struct GpencilBatchCacheElem *be, bGPDstroke *gps, float alpha, short dflag) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Object *ob = draw_ctx->obact; + bGPdata *gpd = ob->data; + bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE); + + int vgindex = ob->actdef - 1; + if (!BLI_findlink(&ob->defbase, vgindex)) { + vgindex = -1; + } + + /* Get size of verts: + * - The selected state needs to be larger than the unselected state so that + * they stand out more. + * - We use the theme setting for size of the unselected verts + */ + float bsize = UI_GetThemeValuef(TH_GP_VERTEX_SIZE); + float vsize; + if ((int)bsize > 8) { + vsize = 10.0f; + bsize = 8.0f; + } + else { + vsize = bsize + 2; + } + + /* for now, we assume that the base color of the points is not too close to the real color */ + float selectColor[4]; + UI_GetThemeColor3fv(TH_GP_VERTEX_SELECT, selectColor); + selectColor[3] = alpha; + + float unselectColor[4]; + UI_GetThemeColor3fv(TH_GP_VERTEX, unselectColor); + unselectColor[3] = alpha; + + if (be->vbo == NULL) { + be->pos_id = GPU_vertformat_attr_add(&be->format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + be->color_id = GPU_vertformat_attr_add(&be->format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + be->thickness_id = GPU_vertformat_attr_add(&be->format, "size", GPU_COMP_F32, 1, GPU_FETCH_FLOAT); + + be->vbo = GPU_vertbuf_create_with_format(&be->format); + GPU_vertbuf_data_alloc(be->vbo, gps->totpoints); + be->vbo_len = 0; + } + gpencil_vbo_ensure_size(be, gps->totpoints); + + /* Draw start and end point differently if enabled stroke direction hint */ + bool show_direction_hint = (dflag & GP_DATA_SHOW_DIRECTION) && (gps->totpoints > 1); + + /* Draw all the stroke points (selected or not) */ + bGPDspoint *pt = gps->points; + MDeformVert *dvert = gps->dvert; + + float fcolor[4]; + float fsize = 0; + for (int i = 0; i < gps->totpoints; i++, pt++) { + /* weight paint */ + if (is_weight_paint) { + float weight = (dvert && dvert->dw) ? defvert_find_weight(dvert, vgindex) : 0.0f; + float hue = 2.0f * (1.0f - weight) / 3.0f; + hsv_to_rgb(hue, 1.0f, 1.0f, &selectColor[0], &selectColor[1], &selectColor[2]); + selectColor[3] = 1.0f; + copy_v4_v4(fcolor, selectColor); + fsize = vsize; + } + else { + if (show_direction_hint && i == 0) { + /* start point in green bigger */ + ARRAY_SET_ITEMS(fcolor, 0.0f, 1.0f, 0.0f, 1.0f); + fsize = vsize + 4; + } + else if (show_direction_hint && (i == gps->totpoints - 1)) { + /* end point in red smaller */ + ARRAY_SET_ITEMS(fcolor, 1.0f, 0.0f, 0.0f, 1.0f); + fsize = vsize + 1; + } + else if (pt->flag & GP_SPOINT_SELECT) { + copy_v4_v4(fcolor, selectColor); + fsize = vsize; + } + else { + copy_v4_v4(fcolor, unselectColor); + fsize = bsize; + } + } + + GPU_vertbuf_attr_set(be->vbo, be->color_id, be->vbo_len, fcolor); + GPU_vertbuf_attr_set(be->vbo, be->thickness_id, be->vbo_len, &fsize); + GPU_vertbuf_attr_set(be->vbo, be->pos_id, be->vbo_len, &pt->x); + be->vbo_len++; + if (gps->dvert != NULL) { + dvert++; + } + } +} + +/* Draw lines for strokes being edited */ +void DRW_gpencil_get_edlin_geom(struct GpencilBatchCacheElem *be, bGPDstroke *gps, float alpha, short UNUSED(dflag)) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Object *ob = draw_ctx->obact; + bGPdata *gpd = ob->data; + bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE); + + int vgindex = ob->actdef - 1; + if (!BLI_findlink(&ob->defbase, vgindex)) { + vgindex = -1; + } + + float selectColor[4]; + UI_GetThemeColor3fv(TH_GP_VERTEX_SELECT, selectColor); + selectColor[3] = alpha; + float linecolor[4]; + copy_v4_v4(linecolor, gpd->line_color); + + if (be->vbo == NULL) { + be->pos_id = GPU_vertformat_attr_add(&be->format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + be->color_id = GPU_vertformat_attr_add(&be->format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + + be->vbo = GPU_vertbuf_create_with_format(&be->format); + GPU_vertbuf_data_alloc(be->vbo, gps->totpoints); + be->vbo_len = 0; + } + gpencil_vbo_ensure_size(be, gps->totpoints); + + /* Draw all the stroke lines (selected or not) */ + bGPDspoint *pt = gps->points; + MDeformVert *dvert = gps->dvert; + + float fcolor[4]; + for (int i = 0; i < gps->totpoints; i++, pt++) { + /* weight paint */ + if (is_weight_paint) { + float weight = (dvert && dvert->dw) ? defvert_find_weight(dvert, vgindex) : 0.0f; + float hue = 2.0f * (1.0f - weight) / 3.0f; + hsv_to_rgb(hue, 1.0f, 1.0f, &selectColor[0], &selectColor[1], &selectColor[2]); + selectColor[3] = 1.0f; + copy_v4_v4(fcolor, selectColor); + } + else { + if (pt->flag & GP_SPOINT_SELECT) { + copy_v4_v4(fcolor, selectColor); + } + else { + copy_v4_v4(fcolor, linecolor); + } + } + + GPU_vertbuf_attr_set(be->vbo, be->color_id, be->vbo_len, fcolor); + GPU_vertbuf_attr_set(be->vbo, be->pos_id, be->vbo_len, &pt->x); + be->vbo_len++; + + if (gps->dvert != NULL) { + dvert++; + } + } +} + +static void set_grid_point( + GPUVertBuf *vbo, int idx, float col_grid[4], + uint pos_id, uint color_id, + float v1, float v2, const int axis) +{ + GPU_vertbuf_attr_set(vbo, color_id, idx, col_grid); + + float pos[3]; + /* Set the grid in the selected axis */ + switch (axis) { + case GP_LOCKAXIS_X: + { + ARRAY_SET_ITEMS(pos, 0.0f, v1, v2); + break; + } + case GP_LOCKAXIS_Y: + { + ARRAY_SET_ITEMS(pos, v1, 0.0f, v2); + break; + } + case GP_LOCKAXIS_Z: + default: /* view aligned */ + { + ARRAY_SET_ITEMS(pos, v1, v2, 0.0f); + break; + } + } + + GPU_vertbuf_attr_set(vbo, pos_id, idx, pos); +} + +/* Draw grid lines */ +GPUBatch *DRW_gpencil_get_grid(Object *ob) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + ToolSettings *ts = scene->toolsettings; + View3D *v3d = draw_ctx->v3d; + bGPdata *gpd = (bGPdata *)ob->data; + const bool do_center = (gpd->grid.lines <= 0) ? false : true; + + float col_grid[4]; + + /* verify we have something to draw and valid values */ + if (gpd->grid.scale[0] == 0.0f) { + gpd->grid.scale[0] = 1.0f; + } + if (gpd->grid.scale[1] == 0.0f) { + gpd->grid.scale[1] = 1.0f; + } + + if (v3d->overlay.gpencil_grid_opacity < 0.1f) { + v3d->overlay.gpencil_grid_opacity = 0.1f; + } + + /* set color */ + copy_v3_v3(col_grid, gpd->grid.color); + col_grid[3] = v3d->overlay.gpencil_grid_opacity; + + const int axis = ts->gp_sculpt.lock_axis; + + const char *grid_unit = NULL; + const int gridlines = (gpd->grid.lines <= 0) ? 1 : gpd->grid.lines; + const float grid_w = gpd->grid.scale[0] * ED_scene_grid_scale(scene, &grid_unit); + const float grid_h = gpd->grid.scale[1] * ED_scene_grid_scale(scene, &grid_unit); + const float space_w = (grid_w / gridlines); + const float space_h = (grid_h / gridlines); + const float offset[2] = { gpd->grid.offset[0], gpd->grid.offset[1] }; + + const uint vertex_len = 2 * (gridlines * 4 + 2); + + static GPUVertFormat format = { 0 }; + static uint pos_id, color_id; + if (format.attr_len == 0) { + pos_id = GPU_vertformat_attr_add(&format, "pos", GPU_COMP_F32, 3, GPU_FETCH_FLOAT); + color_id = GPU_vertformat_attr_add(&format, "color", GPU_COMP_F32, 4, GPU_FETCH_FLOAT); + } + + GPUVertBuf *vbo = GPU_vertbuf_create_with_format(&format); + GPU_vertbuf_data_alloc(vbo, vertex_len); + + int idx = 0; + + for (int a = 1; a <= gridlines; a++) { + const float line_w = a * space_w; + const float line_h = a * space_h; + + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -grid_w + offset[0], -line_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +grid_w + offset[0], -line_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -grid_w + offset[0], +line_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +grid_w + offset[0], +line_h + offset[1], axis); + idx++; + + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -line_w + offset[0], -grid_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -line_w + offset[0], +grid_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +line_w + offset[0], -grid_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +line_w + offset[0], +grid_h + offset[1], axis); + idx++; + } + /* center lines */ + if (do_center) { + set_grid_point(vbo, idx, col_grid, pos_id, color_id, -grid_w + offset[0], 0.0f + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, +grid_w + offset[0], 0.0f + offset[1], axis); + idx++; + + set_grid_point(vbo, idx, col_grid, pos_id, color_id, 0.0f + offset[0], -grid_h + offset[1], axis); + idx++; + set_grid_point(vbo, idx, col_grid, pos_id, color_id, 0.0f + offset[0], +grid_h + offset[1], axis); + idx++; + } + return GPU_batch_create_ex(GPU_PRIM_LINES, vbo, NULL, GPU_BATCH_OWNS_VBO); +} diff --git a/source/blender/draw/engines/gpencil/gpencil_draw_utils.c b/source/blender/draw/engines/gpencil/gpencil_draw_utils.c new file mode 100644 index 00000000000..932a6cc3df0 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_draw_utils.c @@ -0,0 +1,1631 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_draw_utils.c + * \ingroup draw + */ + +#include "BLI_polyfill_2d.h" + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "BKE_brush.h" +#include "BKE_gpencil.h" +#include "BKE_gpencil_modifier.h" +#include "BKE_image.h" +#include "BKE_material.h" +#include "BKE_paint.h" + +#include "ED_gpencil.h" +#include "ED_view3d.h" + +#include "DNA_gpencil_types.h" +#include "DNA_material_types.h" +#include "DNA_view3d_types.h" +#include "DNA_gpencil_modifier_types.h" + +/* If builtin shaders are needed */ +#include "GPU_shader.h" +#include "GPU_texture.h" + +/* For EvaluationContext... */ +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_query.h" + +#include "IMB_imbuf_types.h" + +#include "gpencil_engine.h" + +/* fill type to communicate to shader */ +#define SOLID 0 +#define GRADIENT 1 +#define RADIAL 2 +#define CHESS 3 +#define TEXTURE 4 +#define PATTERN 5 + +#define GP_SET_SRC_GPS(src_gps) if (src_gps) src_gps = src_gps->next + +/* Get number of vertex for using in GPU VBOs */ +static void gpencil_calc_vertex( + GPENCIL_StorageList *stl, tGPencilObjectCache *cache_ob, + GpencilBatchCache *cache, bGPdata *gpd, + int cfra_eval) +{ + Object *ob = cache_ob->ob; + const DRWContextState *draw_ctx = DRW_context_state_get(); + bGPDframe *gpf = NULL; + + const bool time_remap = BKE_gpencil_has_time_modifiers(ob); + + cache_ob->tot_vertex = 0; + cache_ob->tot_triangles = 0; + + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + if (gpl->flag & GP_LAYER_HIDE) { + continue; + } + + /* verify time modifiers */ + if ((time_remap) && (!stl->storage->simplify_modif)) { + int remap_cfra = BKE_gpencil_time_modifier( + draw_ctx->depsgraph, draw_ctx->scene, ob, gpl, cfra_eval, + stl->storage->is_render); + gpf = BKE_gpencil_layer_getframe(gpl, remap_cfra, GP_GETFRAME_USE_PREV); + } + else { + gpf = gpl->actframe; + } + + if (gpf == NULL) { + continue; + } + + for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) { + cache_ob->tot_vertex += gps->totpoints + 3; + cache_ob->tot_triangles += gps->totpoints - 1; + } + } + + cache->b_fill.tot_vertex = cache_ob->tot_triangles * 3; + cache->b_stroke.tot_vertex = cache_ob->tot_vertex; + cache->b_point.tot_vertex = cache_ob->tot_vertex; + + /* some modifiers can change the number of points */ + int factor = 0; + GpencilModifierData *md; + for (md = ob->greasepencil_modifiers.first; md; md = md->next) { + const GpencilModifierTypeInfo *mti = BKE_gpencil_modifierType_getInfo(md->type); + /* only modifiers that change size */ + if (mti && mti->getDuplicationFactor) { + factor = mti->getDuplicationFactor(md); + + cache->b_fill.tot_vertex *= factor; + cache->b_stroke.tot_vertex *= factor; + cache->b_point.tot_vertex *= factor; + } + } +} + +/* Helper for doing all the checks on whether a stroke can be drawn */ +static bool gpencil_can_draw_stroke( + struct MaterialGPencilStyle *gp_style, const bGPDstroke *gps, + const bool onion, const bool is_mat_preview) +{ + /* skip stroke if it doesn't have any valid data */ + if ((gps->points == NULL) || (gps->totpoints < 1) || (gp_style == NULL)) + return false; + + /* if mat preview render always visible */ + if (is_mat_preview) { + return true; + } + + /* check if the color is visible */ + if ((gp_style == NULL) || + (gp_style->flag & GP_STYLE_COLOR_HIDE) || + (onion && (gp_style->flag & GP_STYLE_COLOR_ONIONSKIN))) + { + return false; + } + + /* stroke can be drawn */ + return true; +} + +/* calc bounding box in 2d using flat projection data */ +static void gpencil_calc_2d_bounding_box( + const float(*points2d)[2], int totpoints, float minv[2], float maxv[2]) +{ + minv[0] = points2d[0][0]; + minv[1] = points2d[0][1]; + maxv[0] = points2d[0][0]; + maxv[1] = points2d[0][1]; + + for (int i = 1; i < totpoints; i++) { + /* min */ + if (points2d[i][0] < minv[0]) { + minv[0] = points2d[i][0]; + } + if (points2d[i][1] < minv[1]) { + minv[1] = points2d[i][1]; + } + /* max */ + if (points2d[i][0] > maxv[0]) { + maxv[0] = points2d[i][0]; + } + if (points2d[i][1] > maxv[1]) { + maxv[1] = points2d[i][1]; + } + } + /* use a perfect square */ + if (maxv[0] > maxv[1]) { + maxv[1] = maxv[0]; + } + else { + maxv[0] = maxv[1]; + } +} + +/* calc texture coordinates using flat projected points */ +static void gpencil_calc_stroke_fill_uv( + const float(*points2d)[2], int totpoints, float minv[2], float maxv[2], float(*r_uv)[2]) +{ + float d[2]; + d[0] = maxv[0] - minv[0]; + d[1] = maxv[1] - minv[1]; + for (int i = 0; i < totpoints; i++) { + r_uv[i][0] = (points2d[i][0] - minv[0]) / d[0]; + r_uv[i][1] = (points2d[i][1] - minv[1]) / d[1]; + } +} + +/* Get points of stroke always flat to view not affected by camera view or view position */ +static void gpencil_stroke_2d_flat(const bGPDspoint *points, int totpoints, float(*points2d)[2], int *r_direction) +{ + const bGPDspoint *pt0 = &points[0]; + const bGPDspoint *pt1 = &points[1]; + const bGPDspoint *pt3 = &points[(int)(totpoints * 0.75)]; + + float locx[3]; + float locy[3]; + float loc3[3]; + float normal[3]; + + /* local X axis (p0 -> p1) */ + sub_v3_v3v3(locx, &pt1->x, &pt0->x); + + /* point vector at 3/4 */ + sub_v3_v3v3(loc3, &pt3->x, &pt0->x); + + /* vector orthogonal to polygon plane */ + cross_v3_v3v3(normal, locx, loc3); + + /* local Y axis (cross to normal/x axis) */ + cross_v3_v3v3(locy, normal, locx); + + /* Normalize vectors */ + normalize_v3(locx); + normalize_v3(locy); + + /* Get all points in local space */ + for (int i = 0; i < totpoints; i++) { + const bGPDspoint *pt = &points[i]; + float loc[3]; + + /* Get local space using first point as origin */ + sub_v3_v3v3(loc, &pt->x, &pt0->x); + + points2d[i][0] = dot_v3v3(loc, locx); + points2d[i][1] = dot_v3v3(loc, locy); + } + + /* Concave (-1), Convex (1), or Autodetect (0)? */ + *r_direction = (int)locy[2]; +} + +/* recalc the internal geometry caches for fill and uvs */ +static void DRW_gpencil_recalc_geometry_caches( + Object *ob, bGPDlayer *gpl, MaterialGPencilStyle *gp_style, bGPDstroke *gps) +{ + if (gps->flag & GP_STROKE_RECALC_CACHES) { + /* Calculate triangles cache for filling area (must be done only after changes) */ + if ((gps->tot_triangles == 0) || (gps->triangles == NULL)) { + if ((gps->totpoints > 2) && + ((gp_style->fill_rgba[3] > GPENCIL_ALPHA_OPACITY_THRESH) || + (gp_style->fill_style > 0) || (gpl->blend_mode != eGplBlendMode_Normal))) + { + DRW_gpencil_triangulate_stroke_fill(ob, gps); + } + } + + /* calc uv data along the stroke */ + ED_gpencil_calc_stroke_uv(ob, gps); + + /* clear flag */ + gps->flag &= ~GP_STROKE_RECALC_CACHES; + } +} + +/* create shading group for filling */ +static DRWShadingGroup *DRW_gpencil_shgroup_fill_create( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, DRWPass *pass, + GPUShader *shader, bGPdata *gpd, bGPDlayer *gpl, + MaterialGPencilStyle *gp_style, int id) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + + /* e_data.gpencil_fill_sh */ + DRWShadingGroup *grp = DRW_shgroup_create(shader, pass); + + DRW_shgroup_uniform_vec4(grp, "color2", gp_style->mix_rgba, 1); + + /* set style type */ + switch (gp_style->fill_style) { + case GP_STYLE_FILL_STYLE_SOLID: + stl->shgroups[id].fill_style = SOLID; + break; + case GP_STYLE_FILL_STYLE_GRADIENT: + if (gp_style->gradient_type == GP_STYLE_GRADIENT_LINEAR) { + stl->shgroups[id].fill_style = GRADIENT; + } + else { + stl->shgroups[id].fill_style = RADIAL; + } + break; + case GP_STYLE_FILL_STYLE_CHESSBOARD: + stl->shgroups[id].fill_style = CHESS; + break; + case GP_STYLE_FILL_STYLE_TEXTURE: + if (gp_style->flag & GP_STYLE_FILL_PATTERN) { + stl->shgroups[id].fill_style = PATTERN; + } + else { + stl->shgroups[id].fill_style = TEXTURE; + } + break; + default: + stl->shgroups[id].fill_style = GP_STYLE_FILL_STYLE_SOLID; + break; + } + DRW_shgroup_uniform_int(grp, "fill_type", &stl->shgroups[id].fill_style, 1); + + DRW_shgroup_uniform_float(grp, "mix_factor", &gp_style->mix_factor, 1); + + DRW_shgroup_uniform_float(grp, "gradient_angle", &gp_style->gradient_angle, 1); + DRW_shgroup_uniform_float(grp, "gradient_radius", &gp_style->gradient_radius, 1); + DRW_shgroup_uniform_float(grp, "pattern_gridsize", &gp_style->pattern_gridsize, 1); + DRW_shgroup_uniform_vec2(grp, "gradient_scale", gp_style->gradient_scale, 1); + DRW_shgroup_uniform_vec2(grp, "gradient_shift", gp_style->gradient_shift, 1); + + DRW_shgroup_uniform_float(grp, "texture_angle", &gp_style->texture_angle, 1); + DRW_shgroup_uniform_vec2(grp, "texture_scale", gp_style->texture_scale, 1); + DRW_shgroup_uniform_vec2(grp, "texture_offset", gp_style->texture_offset, 1); + DRW_shgroup_uniform_float(grp, "texture_opacity", &gp_style->texture_opacity, 1); + DRW_shgroup_uniform_float(grp, "layer_opacity", &gpl->opacity, 1); + + stl->shgroups[id].texture_mix = gp_style->flag & GP_STYLE_COLOR_TEX_MIX ? 1 : 0; + DRW_shgroup_uniform_int(grp, "texture_mix", &stl->shgroups[id].texture_mix, 1); + + stl->shgroups[id].texture_flip = gp_style->flag & GP_STYLE_COLOR_FLIP_FILL ? 1 : 0; + DRW_shgroup_uniform_int(grp, "texture_flip", &stl->shgroups[id].texture_flip, 1); + + DRW_shgroup_uniform_int(grp, "xraymode", (const int *) &gpd->xray_mode, 1); + /* image texture */ + if ((gp_style->flag & GP_STYLE_COLOR_TEX_MIX) || + (gp_style->fill_style & GP_STYLE_FILL_STYLE_TEXTURE)) + { + ImBuf *ibuf; + Image *image = gp_style->ima; + ImageUser iuser = { NULL }; + void *lock; + + iuser.ok = true; + + ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock); + + if (ibuf == NULL || ibuf->rect == NULL) { + BKE_image_release_ibuf(image, ibuf, NULL); + } + else { + GPUTexture *texture = GPU_texture_from_blender(gp_style->ima, &iuser, GL_TEXTURE_2D, true, 0.0); + DRW_shgroup_uniform_texture(grp, "myTexture", texture); + + stl->shgroups[id].texture_clamp = gp_style->flag & GP_STYLE_COLOR_TEX_CLAMP ? 1 : 0; + DRW_shgroup_uniform_int(grp, "texture_clamp", &stl->shgroups[id].texture_clamp, 1); + + BKE_image_release_ibuf(image, ibuf, NULL); + } + } + else { + /* if no texture defined, need a blank texture to avoid errors in draw manager */ + DRW_shgroup_uniform_texture(grp, "myTexture", e_data->gpencil_blank_texture); + stl->shgroups[id].texture_clamp = 0; + DRW_shgroup_uniform_int(grp, "texture_clamp", &stl->shgroups[id].texture_clamp, 1); + } + + return grp; +} + +/* create shading group for strokes */ +DRWShadingGroup *DRW_gpencil_shgroup_stroke_create( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, DRWPass *pass, GPUShader *shader, Object *ob, + bGPdata *gpd, MaterialGPencilStyle *gp_style, int id, bool onion) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const float *viewport_size = DRW_viewport_size_get(); + + /* e_data.gpencil_stroke_sh */ + DRWShadingGroup *grp = DRW_shgroup_create(shader, pass); + + DRW_shgroup_uniform_vec2(grp, "Viewport", viewport_size, 1); + + DRW_shgroup_uniform_float(grp, "pixsize", stl->storage->pixsize, 1); + + /* avoid wrong values */ + if ((gpd) && (gpd->pixfactor == 0)) { + gpd->pixfactor = GP_DEFAULT_PIX_FACTOR; + } + + /* object scale and depth */ + if ((ob) && (id > -1)) { + stl->shgroups[id].obj_scale = mat4_to_scale(ob->obmat); + DRW_shgroup_uniform_float(grp, "objscale", &stl->shgroups[id].obj_scale, 1); + stl->shgroups[id].keep_size = (int)((gpd) && (gpd->flag & GP_DATA_STROKE_KEEPTHICKNESS)); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->shgroups[id].keep_size, 1); + + stl->shgroups[id].stroke_style = gp_style->stroke_style; + stl->shgroups[id].color_type = GPENCIL_COLOR_SOLID; + if ((gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + stl->shgroups[id].color_type = GPENCIL_COLOR_TEXTURE; + if (gp_style->flag & GP_STYLE_STROKE_PATTERN) { + stl->shgroups[id].color_type = GPENCIL_COLOR_PATTERN; + } + } + DRW_shgroup_uniform_int(grp, "color_type", &stl->shgroups[id].color_type, 1); + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + stl->storage->obj_scale = 1.0f; + stl->storage->keep_size = 0; + stl->storage->pixfactor = GP_DEFAULT_PIX_FACTOR; + DRW_shgroup_uniform_float(grp, "objscale", &stl->storage->obj_scale, 1); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->storage->keep_size, 1); + DRW_shgroup_uniform_int(grp, "color_type", &stl->storage->color_type, 1); + if (gpd) { + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + DRW_shgroup_uniform_float(grp, "pixfactor", &stl->storage->pixfactor, 1); + } + } + + if ((gpd) && (id > -1)) { + DRW_shgroup_uniform_int(grp, "xraymode", (const int *) &gpd->xray_mode, 1); + } + else { + /* for drawing always on front */ + DRW_shgroup_uniform_int(grp, "xraymode", &stl->storage->xray, 1); + } + + /* image texture for pattern */ + if ((gp_style) && (gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + ImBuf *ibuf; + Image *image = gp_style->sima; + ImageUser iuser = { NULL }; + void *lock; + + iuser.ok = true; + + ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock); + + if (ibuf == NULL || ibuf->rect == NULL) { + BKE_image_release_ibuf(image, ibuf, NULL); + } + else { + GPUTexture *texture = GPU_texture_from_blender(gp_style->sima, &iuser, GL_TEXTURE_2D, true, 0.0f); + DRW_shgroup_uniform_texture(grp, "myTexture", texture); + + BKE_image_release_ibuf(image, ibuf, NULL); + } + } + else { + /* if no texture defined, need a blank texture to avoid errors in draw manager */ + DRW_shgroup_uniform_texture(grp, "myTexture", e_data->gpencil_blank_texture); + } + + return grp; +} + +/* create shading group for points */ +static DRWShadingGroup *DRW_gpencil_shgroup_point_create( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, DRWPass *pass, GPUShader *shader, Object *ob, + bGPdata *gpd, MaterialGPencilStyle *gp_style, int id, bool onion) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const float *viewport_size = DRW_viewport_size_get(); + + /* e_data.gpencil_stroke_sh */ + DRWShadingGroup *grp = DRW_shgroup_create(shader, pass); + + DRW_shgroup_uniform_vec2(grp, "Viewport", viewport_size, 1); + DRW_shgroup_uniform_float(grp, "pixsize", stl->storage->pixsize, 1); + + /* avoid wrong values */ + if ((gpd) && (gpd->pixfactor == 0)) { + gpd->pixfactor = GP_DEFAULT_PIX_FACTOR; + } + + /* object scale and depth */ + if ((ob) && (id > -1)) { + stl->shgroups[id].obj_scale = mat4_to_scale(ob->obmat); + DRW_shgroup_uniform_float(grp, "objscale", &stl->shgroups[id].obj_scale, 1); + stl->shgroups[id].keep_size = (int)((gpd) && (gpd->flag & GP_DATA_STROKE_KEEPTHICKNESS)); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->shgroups[id].keep_size, 1); + + stl->shgroups[id].mode = gp_style->mode; + stl->shgroups[id].stroke_style = gp_style->stroke_style; + stl->shgroups[id].color_type = GPENCIL_COLOR_SOLID; + if ((gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + stl->shgroups[id].color_type = GPENCIL_COLOR_TEXTURE; + if (gp_style->flag & GP_STYLE_STROKE_PATTERN) { + stl->shgroups[id].color_type = GPENCIL_COLOR_PATTERN; + } + } + DRW_shgroup_uniform_int(grp, "color_type", &stl->shgroups[id].color_type, 1); + DRW_shgroup_uniform_int(grp, "mode", &stl->shgroups[id].mode, 1); + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + stl->storage->obj_scale = 1.0f; + stl->storage->keep_size = 0; + stl->storage->pixfactor = GP_DEFAULT_PIX_FACTOR; + stl->storage->mode = gp_style->mode; + DRW_shgroup_uniform_float(grp, "objscale", &stl->storage->obj_scale, 1); + DRW_shgroup_uniform_int(grp, "keep_size", &stl->storage->keep_size, 1); + DRW_shgroup_uniform_int(grp, "color_type", &stl->storage->color_type, 1); + DRW_shgroup_uniform_int(grp, "mode", &stl->storage->mode, 1); + if (gpd) { + DRW_shgroup_uniform_float(grp, "pixfactor", &gpd->pixfactor, 1); + } + else { + DRW_shgroup_uniform_float(grp, "pixfactor", &stl->storage->pixfactor, 1); + } + } + + if (gpd) { + DRW_shgroup_uniform_int(grp, "xraymode", (const int *)&gpd->xray_mode, 1); + } + else { + /* for drawing always on front */ + DRW_shgroup_uniform_int(grp, "xraymode", &stl->storage->xray, 1); + } + + /* image texture */ + if ((gp_style) && (gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) && (!onion)) { + ImBuf *ibuf; + Image *image = gp_style->sima; + ImageUser iuser = { NULL }; + void *lock; + + iuser.ok = true; + + ibuf = BKE_image_acquire_ibuf(image, &iuser, &lock); + + if (ibuf == NULL || ibuf->rect == NULL) { + BKE_image_release_ibuf(image, ibuf, NULL); + } + else { + GPUTexture *texture = GPU_texture_from_blender(gp_style->sima, &iuser, GL_TEXTURE_2D, true, 0.0f); + DRW_shgroup_uniform_texture(grp, "myTexture", texture); + + BKE_image_release_ibuf(image, ibuf, NULL); + } + } + else { + /* if no texture defined, need a blank texture to avoid errors in draw manager */ + DRW_shgroup_uniform_texture(grp, "myTexture", e_data->gpencil_blank_texture); + } + + return grp; +} + +/* add fill vertex info */ +static void gpencil_add_fill_vertexdata( + GpencilBatchCache *cache, + Object *ob, bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps, + float opacity, const float tintcolor[4], const bool onion, const bool custonion) +{ + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + if (gps->totpoints >= 3) { + float tfill[4]; + /* set color using material, tint color and opacity */ + interp_v3_v3v3(tfill, gps->runtime.tmp_fill_rgba, tintcolor, tintcolor[3]); + tfill[3] = gps->runtime.tmp_fill_rgba[3] * opacity; + if ((tfill[3] > GPENCIL_ALPHA_OPACITY_THRESH) || + (gp_style->fill_style > 0) || + (gpl->blend_mode != eGplBlendMode_Normal)) + { + if (cache->is_dirty) { + const float *color; + if (!onion) { + color = tfill; + } + else { + if (custonion) { + color = tintcolor; + } + else { + ARRAY_SET_ITEMS(tfill, UNPACK3(gps->runtime.tmp_fill_rgba), tintcolor[3]); + color = tfill; + } + } + /* create vertex data */ + const int old_len = cache->b_fill.vbo_len; + DRW_gpencil_get_fill_geom(&cache->b_fill, ob, gps, color); + + /* add to list of groups */ + if (old_len < cache->b_fill.vbo_len) { + cache->grp_cache = gpencil_group_cache_add( + cache->grp_cache, gpl, gpf, gps, + eGpencilBatchGroupType_Fill, onion, + cache->b_fill.vbo_len, + &cache->grp_size, &cache->grp_used); + } + } + } + } +} + +/* add stroke vertex info */ +static void gpencil_add_stroke_vertexdata( + GpencilBatchCache *cache, + Object *ob, bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps, + const float opacity, const float tintcolor[4], const bool onion, + const bool custonion) +{ + float tcolor[4]; + float ink[4]; + short sthickness; + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* set color using base color, tint color and opacity */ + if (cache->is_dirty) { + if (!onion) { + /* if special stroke, use fill color as stroke color */ + if (gps->flag & GP_STROKE_NOFILL) { + interp_v3_v3v3(tcolor, gps->runtime.tmp_fill_rgba, tintcolor, tintcolor[3]); + tcolor[3] = gps->runtime.tmp_fill_rgba[3] * opacity; + } + else { + interp_v3_v3v3(tcolor, gps->runtime.tmp_stroke_rgba, tintcolor, tintcolor[3]); + tcolor[3] = gps->runtime.tmp_stroke_rgba[3] * opacity; + } + copy_v4_v4(ink, tcolor); + } + else { + if (custonion) { + copy_v4_v4(ink, tintcolor); + } + else { + ARRAY_SET_ITEMS(tcolor, UNPACK3(gps->runtime.tmp_stroke_rgba), opacity); + copy_v4_v4(ink, tcolor); + } + } + + sthickness = gps->thickness + gpl->line_change; + CLAMP_MIN(sthickness, 1); + + if ((gps->totpoints > 1) && (gp_style->mode == GP_STYLE_MODE_LINE)) { + /* create vertex data */ + const int old_len = cache->b_stroke.vbo_len; + DRW_gpencil_get_stroke_geom(&cache->b_stroke, gps, sthickness, ink); + + /* add to list of groups */ + if (old_len < cache->b_stroke.vbo_len) { + cache->grp_cache = gpencil_group_cache_add( + cache->grp_cache, gpl, gpf, gps, + eGpencilBatchGroupType_Stroke, onion, + cache->b_stroke.vbo_len, + &cache->grp_size, &cache->grp_used); + } + } + else { + /* create vertex data */ + const int old_len = cache->b_point.vbo_len; + DRW_gpencil_get_point_geom(&cache->b_point, gps, sthickness, ink); + + /* add to list of groups */ + if (old_len < cache->b_point.vbo_len) { + cache->grp_cache = gpencil_group_cache_add( + cache->grp_cache, gpl, gpf, gps, eGpencilBatchGroupType_Point, onion, + cache->b_point.vbo_len, + &cache->grp_size, &cache->grp_used); + } + } + } +} + +/* add edit points vertex info */ +static void gpencil_add_editpoints_vertexdata( + GPENCIL_StorageList *UNUSED(stl), GpencilBatchCache *cache, ToolSettings *UNUSED(ts), Object *ob, + bGPdata *gpd, bGPDlayer *gpl, bGPDframe *gpf, bGPDstroke *gps) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* alpha factor for edit points/line to make them more subtle */ + float edit_alpha = v3d->vertex_opacity; + + if (GPENCIL_ANY_EDIT_MODE(gpd)) { + Object *obact = DRW_context_state_get()->obact; + if ((!obact) || (obact->type != OB_GPENCIL)) { + return; + } + const bool is_weight_paint = (gpd) && (gpd->flag & GP_DATA_STROKE_WEIGHTMODE); + + if (cache->is_dirty) { + if ((obact == ob) && + ((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) && + (v3d->gp_flag & V3D_GP_SHOW_EDIT_LINES)) + { + /* line of the original stroke */ + DRW_gpencil_get_edlin_geom(&cache->b_edlin, gps, edit_alpha, gpd->flag); + + /* add to list of groups */ + cache->grp_cache = gpencil_group_cache_add( + cache->grp_cache, gpl, gpf, gps, + eGpencilBatchGroupType_Edlin, false, + cache->b_edlin.vbo_len, + &cache->grp_size, &cache->grp_used); + } + /* edit points */ + if ((gps->flag & GP_STROKE_SELECT) || (is_weight_paint)) { + if ((gpl->flag & GP_LAYER_UNLOCK_COLOR) || ((gp_style->flag & GP_STYLE_COLOR_LOCKED) == 0)) { + if (obact == ob) { + DRW_gpencil_get_edit_geom(&cache->b_edit, gps, edit_alpha, gpd->flag); + + /* add to list of groups */ + cache->grp_cache = gpencil_group_cache_add( + cache->grp_cache, gpl, gpf, gps, + eGpencilBatchGroupType_Edit, false, + cache->b_edit.vbo_len, + &cache->grp_size, &cache->grp_used); + } + } + } + } + } +} + +/* main function to draw strokes */ +static void gpencil_draw_strokes( + GpencilBatchCache *cache, GPENCIL_e_data *e_data, void *vedata, ToolSettings *ts, Object *ob, + bGPdata *gpd, bGPDlayer *gpl, bGPDframe *src_gpf, bGPDframe *derived_gpf, + const float opacity, const float tintcolor[4], + const bool custonion, tGPencilObjectCache *cache_ob) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + View3D *v3d = draw_ctx->v3d; + bGPDstroke *gps, *src_gps; + float viewmatrix[4][4]; + const bool is_multiedit = (bool)GPENCIL_MULTIEDIT_SESSIONS_ON(gpd); + const bool playing = stl->storage->is_playing; + const bool is_render = (bool)stl->storage->is_render; + const bool is_mat_preview = (bool)stl->storage->is_mat_preview; + const bool overlay_multiedit = v3d != NULL ? (v3d->gp_flag & V3D_GP_SHOW_MULTIEDIT_LINES) : true; + + /* Get evaluation context */ + /* NOTE: We must check if C is valid, otherwise we get crashes when trying to save files + * (i.e. the thumbnail offscreen rendering fails) + */ + Depsgraph *depsgraph = DRW_context_state_get()->depsgraph; + + /* get parent matrix and save as static data */ + ED_gpencil_parent_location(depsgraph, ob, gpd, gpl, viewmatrix); + copy_m4_m4(derived_gpf->runtime.viewmatrix, viewmatrix); + + if ((cache_ob != NULL) && (cache_ob->is_dup_ob)) { + copy_m4_m4(derived_gpf->runtime.viewmatrix, cache_ob->obmat); + } + + /* apply geometry modifiers */ + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first) && (!is_multiedit)) { + if (!stl->storage->simplify_modif) { + if (BKE_gpencil_has_geometry_modifiers(ob)) { + BKE_gpencil_geometry_modifiers(depsgraph, ob, gpl, derived_gpf, stl->storage->is_render); + } + } + } + + if (src_gpf) { + src_gps = src_gpf->strokes.first; + } + else { + src_gps = NULL; + } + + for (gps = derived_gpf->strokes.first; gps; gps = gps->next) { + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* check if stroke can be drawn */ + if (gpencil_can_draw_stroke(gp_style, gps, false, is_mat_preview) == false) { + GP_SET_SRC_GPS(src_gps); + continue; + } + + /* be sure recalc all cache in source stroke to avoid recalculation when frame change + * and improve fps */ + if (src_gps) { + DRW_gpencil_recalc_geometry_caches(ob, gpl, gp_style, src_gps); + } + + /* if the fill has any value, it's considered a fill and is not drawn if simplify fill is enabled */ + if ((stl->storage->simplify_fill) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_REMOVE_FILL_LINE)) { + if ((gp_style->fill_rgba[3] > GPENCIL_ALPHA_OPACITY_THRESH) || + (gp_style->fill_style > GP_STYLE_FILL_STYLE_SOLID) || + (gpl->blend_mode != eGplBlendMode_Normal)) + { + GP_SET_SRC_GPS(src_gps); + continue; + } + } + + if ((gpl->actframe->framenum == derived_gpf->framenum) || + (!is_multiedit) || (overlay_multiedit)) + { + /* copy color to temp fields to apply temporal changes in the stroke */ + copy_v4_v4(gps->runtime.tmp_stroke_rgba, gp_style->stroke_rgba); + copy_v4_v4(gps->runtime.tmp_fill_rgba, gp_style->fill_rgba); + + /* apply modifiers (only modify geometry, but not create ) */ + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first) && (!is_multiedit)) { + if (!stl->storage->simplify_modif) { + BKE_gpencil_stroke_modifiers(depsgraph, ob, gpl, derived_gpf, gps, stl->storage->is_render); + } + } + + /* hide any blend layer */ + if ((!stl->storage->simplify_blend) || + (gpl->blend_mode == eGplBlendMode_Normal)) + { + /* fill */ + if ((gp_style->flag & GP_STYLE_FILL_SHOW) && + (!stl->storage->simplify_fill) && + ((gps->flag & GP_STROKE_NOFILL) == 0)) + { + gpencil_add_fill_vertexdata( + cache, ob, gpl, derived_gpf, gps, + opacity, tintcolor, false, custonion); + } + /* stroke */ + if ((gp_style->flag & GP_STYLE_STROKE_SHOW) && + ((gp_style->stroke_rgba[3] > GPENCIL_ALPHA_OPACITY_THRESH) || + (gpl->blend_mode == eGplBlendMode_Normal))) + { + gpencil_add_stroke_vertexdata( + cache, ob, gpl, derived_gpf, gps, + opacity, tintcolor, false, custonion); + } + } + } + + /* edit points (only in edit mode and not play animation not render) */ + if ((draw_ctx->obact == ob) && (src_gps) && + (!playing) && (!is_render) && (!cache_ob->is_dup_ob)) + { + if ((gpl->flag & GP_LAYER_LOCKED) == 0) { + if (!stl->g_data->shgrps_edit_line) { + stl->g_data->shgrps_edit_line = DRW_shgroup_create(e_data->gpencil_line_sh, psl->edit_pass); + } + if (!stl->g_data->shgrps_edit_point) { + stl->g_data->shgrps_edit_point = DRW_shgroup_create(e_data->gpencil_edit_point_sh, psl->edit_pass); + const float *viewport_size = DRW_viewport_size_get(); + DRW_shgroup_uniform_vec2(stl->g_data->shgrps_edit_point, "Viewport", viewport_size, 1); + } + + gpencil_add_editpoints_vertexdata(stl, cache, ts, ob, gpd, gpl, derived_gpf, src_gps); + } + } + + GP_SET_SRC_GPS(src_gps); + } +} + +/* get alpha factor for onion strokes */ +static void gpencil_get_onion_alpha(float color[4], bGPdata *gpd) +{ +#define MIN_ALPHA_VALUE 0.01f + + /* if fade is disabled, opacity is equal in all frames */ + if ((gpd->onion_flag & GP_ONION_FADE) == 0) { + color[3] = gpd->onion_factor; + } + else { + /* add override opacity factor */ + color[3] += gpd->onion_factor - 0.5f; + } + + CLAMP(color[3], MIN_ALPHA_VALUE, 1.0f); +} + +/* function to draw strokes for onion only */ +static void gpencil_draw_onion_strokes( + GpencilBatchCache *cache, GPENCIL_e_data *UNUSED(e_data), void *vedata, Object *ob, + bGPdata *gpd, bGPDlayer *gpl, bGPDframe *gpf, + const float opacity, const float tintcolor[4], const bool custonion) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + Depsgraph *depsgraph = DRW_context_state_get()->depsgraph; + + float viewmatrix[4][4]; + + /* get parent matrix and save as static data */ + ED_gpencil_parent_location(depsgraph, ob, gpd, gpl, viewmatrix); + copy_m4_m4(gpf->runtime.viewmatrix, viewmatrix); + + for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) { + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + copy_v4_v4(gps->runtime.tmp_stroke_rgba, gp_style->stroke_rgba); + copy_v4_v4(gps->runtime.tmp_fill_rgba, gp_style->fill_rgba); + + int id = stl->storage->shgroup_id; + /* check if stroke can be drawn */ + if (gpencil_can_draw_stroke(gp_style, gps, true, false) == false) { + continue; + } + /* limit the number of shading groups */ + if (id >= GPENCIL_MAX_SHGROUPS) { + continue; + } + + /* stroke */ + gpencil_add_stroke_vertexdata( + cache, ob, gpl, gpf, gps, opacity, tintcolor, true, custonion); + + stl->storage->shgroup_id++; + } +} + +/* draw onion-skinning for a layer */ +static void gpencil_draw_onionskins( + GpencilBatchCache *cache, GPENCIL_e_data *e_data, void *vedata, + Object *ob, bGPdata *gpd, bGPDlayer *gpl, bGPDframe *gpf) +{ + + const float default_color[3] = { UNPACK3(U.gpencil_new_layer_col) }; + const float alpha = 1.0f; + float color[4]; + int idx; + float fac = 1.0f; + int step = 0; + int mode = 0; + bool colflag = false; + bGPDframe *gpf_loop = NULL; + int last = gpf->framenum; + + colflag = (bool)gpd->onion_flag & GP_ONION_GHOST_PREVCOL; + + /* ------------------------------- + * 1) Draw Previous Frames First + * ------------------------------- */ + step = gpd->gstep; + mode = gpd->onion_mode; + + if (gpd->onion_flag & GP_ONION_GHOST_PREVCOL) { + copy_v3_v3(color, gpd->gcolor_prev); + } + else { + copy_v3_v3(color, default_color); + } + + idx = 0; + for (bGPDframe *gf = gpf->prev; gf; gf = gf->prev) { + /* only selected frames */ + if ((mode == GP_ONION_MODE_SELECTED) && ((gf->flag & GP_FRAME_SELECT) == 0)) { + continue; + } + /* absolute range */ + if (mode == GP_ONION_MODE_ABSOLUTE) { + if ((gpf->framenum - gf->framenum) > step) { + break; + } + } + /* relative range */ + if (mode == GP_ONION_MODE_RELATIVE) { + idx++; + if (idx > step) { + break; + } + + } + /* alpha decreases with distance from curframe index */ + if (mode != GP_ONION_MODE_SELECTED) { + if (mode == GP_ONION_MODE_ABSOLUTE) { + fac = 1.0f - ((float)(gpf->framenum - gf->framenum) / (float)(step + 1)); + } + else { + fac = 1.0f - ((float)idx / (float)(step + 1)); + } + color[3] = alpha * fac * 0.66f; + } + else { + idx++; + fac = alpha - ((1.1f - (1.0f / (float)idx)) * 0.66f); + color[3] = fac; + } + + /* if loop option, save the frame to use later */ + if ((mode != GP_ONION_MODE_ABSOLUTE) && (gpd->onion_flag & GP_ONION_LOOP)) { + gpf_loop = gf; + } + + gpencil_get_onion_alpha(color, gpd); + gpencil_draw_onion_strokes(cache, e_data, vedata, ob, gpd, gpl, gf, color[3], color, colflag); + } + /* ------------------------------- + * 2) Now draw next frames + * ------------------------------- */ + step = gpd->gstep_next; + mode = gpd->onion_mode; + + if (gpd->onion_flag & GP_ONION_GHOST_NEXTCOL) { + copy_v3_v3(color, gpd->gcolor_next); + } + else { + copy_v3_v3(color, default_color); + } + + idx = 0; + for (bGPDframe *gf = gpf->next; gf; gf = gf->next) { + /* only selected frames */ + if ((mode == GP_ONION_MODE_SELECTED) && ((gf->flag & GP_FRAME_SELECT) == 0)) { + continue; + } + /* absolute range */ + if (mode == GP_ONION_MODE_ABSOLUTE) { + if ((gf->framenum - gpf->framenum) > step) { + break; + } + } + /* relative range */ + if (mode == GP_ONION_MODE_RELATIVE) { + idx++; + if (idx > step) { + break; + } + + } + /* alpha decreases with distance from curframe index */ + if (mode != GP_ONION_MODE_SELECTED) { + if (mode == GP_ONION_MODE_ABSOLUTE) { + fac = 1.0f - ((float)(gf->framenum - gpf->framenum) / (float)(step + 1)); + } + else { + fac = 1.0f - ((float)idx / (float)(step + 1)); + } + color[3] = alpha * fac * 0.66f; + } + else { + idx++; + fac = alpha - ((1.1f - (1.0f / (float)idx)) * 0.66f); + color[3] = fac; + } + + gpencil_get_onion_alpha(color, gpd); + gpencil_draw_onion_strokes(cache, e_data, vedata, ob, gpd, gpl, gf, color[3], color, colflag); + if (last < gf->framenum) { + last = gf->framenum; + } + } + + /* Draw first frame in blue for loop mode */ + if ((gpd->onion_flag & GP_ONION_LOOP) && (gpf_loop != NULL)) { + if ((last == gpf->framenum) || (gpf->next == NULL)) { + gpencil_get_onion_alpha(color, gpd); + gpencil_draw_onion_strokes( + cache, e_data, vedata, ob, gpd, gpl, + gpf_loop, color[3], color, colflag); + } + } +} + +static void gpencil_copy_frame(bGPDframe *gpf, bGPDframe *derived_gpf) +{ + derived_gpf->prev = gpf->prev; + derived_gpf->next = gpf->next; + derived_gpf->framenum = gpf->framenum; + derived_gpf->flag = gpf->flag; + derived_gpf->key_type = gpf->key_type; + derived_gpf->runtime = gpf->runtime; + copy_m4_m4(derived_gpf->runtime.viewmatrix, gpf->runtime.viewmatrix); + + /* copy strokes */ + BLI_listbase_clear(&derived_gpf->strokes); + for (bGPDstroke *gps_src = gpf->strokes.first; gps_src; gps_src = gps_src->next) { + /* make copy of source stroke */ + bGPDstroke *gps_dst = BKE_gpencil_stroke_duplicate(gps_src); + BLI_addtail(&derived_gpf->strokes, gps_dst); + } +} + +/* Triangulate stroke for high quality fill (this is done only if cache is null or stroke was modified) */ +void DRW_gpencil_triangulate_stroke_fill(Object *ob, bGPDstroke *gps) +{ + BLI_assert(gps->totpoints >= 3); + + bGPdata *gpd = (bGPdata *)ob->data; + + /* allocate memory for temporary areas */ + gps->tot_triangles = gps->totpoints - 2; + uint(*tmp_triangles)[3] = MEM_mallocN(sizeof(*tmp_triangles) * gps->tot_triangles, "GP Stroke temp triangulation"); + float(*points2d)[2] = MEM_mallocN(sizeof(*points2d) * gps->totpoints, "GP Stroke temp 2d points"); + float(*uv)[2] = MEM_mallocN(sizeof(*uv) * gps->totpoints, "GP Stroke temp 2d uv data"); + + int direction = 0; + + /* convert to 2d and triangulate */ + gpencil_stroke_2d_flat(gps->points, gps->totpoints, points2d, &direction); + BLI_polyfill_calc(points2d, (uint)gps->totpoints, direction, tmp_triangles); + + /* calc texture coordinates automatically */ + float minv[2]; + float maxv[2]; + /* first needs bounding box data */ + if (gpd->flag & GP_DATA_UV_ADAPTATIVE) { + gpencil_calc_2d_bounding_box(points2d, gps->totpoints, minv, maxv); + } + else { + ARRAY_SET_ITEMS(minv, -1.0f, -1.0f); + ARRAY_SET_ITEMS(maxv, 1.0f, 1.0f); + } + + /* calc uv data */ + gpencil_calc_stroke_fill_uv(points2d, gps->totpoints, minv, maxv, uv); + + /* Number of triangles */ + gps->tot_triangles = gps->totpoints - 2; + /* save triangulation data in stroke cache */ + if (gps->tot_triangles > 0) { + if (gps->triangles == NULL) { + gps->triangles = MEM_callocN(sizeof(*gps->triangles) * gps->tot_triangles, "GP Stroke triangulation"); + } + else { + gps->triangles = MEM_recallocN(gps->triangles, sizeof(*gps->triangles) * gps->tot_triangles); + } + + for (int i = 0; i < gps->tot_triangles; i++) { + bGPDtriangle *stroke_triangle = &gps->triangles[i]; + memcpy(gps->triangles[i].verts, tmp_triangles[i], sizeof(uint[3])); + /* copy texture coordinates */ + copy_v2_v2(stroke_triangle->uv[0], uv[tmp_triangles[i][0]]); + copy_v2_v2(stroke_triangle->uv[1], uv[tmp_triangles[i][1]]); + copy_v2_v2(stroke_triangle->uv[2], uv[tmp_triangles[i][2]]); + } + } + else { + /* No triangles needed - Free anything allocated previously */ + if (gps->triangles) + MEM_freeN(gps->triangles); + + gps->triangles = NULL; + } + + /* disable recalculation flag */ + if (gps->flag & GP_STROKE_RECALC_CACHES) { + gps->flag &= ~GP_STROKE_RECALC_CACHES; + } + + /* clear memory */ + MEM_SAFE_FREE(tmp_triangles); + MEM_SAFE_FREE(points2d); + MEM_SAFE_FREE(uv); +} + +/* draw stroke in drawing buffer */ +void DRW_gpencil_populate_buffer_strokes(GPENCIL_e_data *e_data, void *vedata, ToolSettings *ts, Object *ob) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + Brush *brush = BKE_paint_brush(&ts->gp_paint->paint); + bGPdata *gpd_eval = ob->data; + /* need the original to avoid cow overhead while drawing */ + bGPdata *gpd = (bGPdata *)DEG_get_original_id(&gpd_eval->id); + + MaterialGPencilStyle *gp_style = NULL; + + float obscale = mat4_to_scale(ob->obmat); + + /* use the brush material */ + Material *ma = BKE_gpencil_get_material_from_brush(brush); + if (ma != NULL) { + gp_style = ma->gp_style; + } + /* this is not common, but avoid any special situations when brush could be without material */ + if (gp_style == NULL) { + gp_style = BKE_material_gpencil_settings_get(ob, ob->actcol); + } + + /* drawing strokes */ + /* Check if may need to draw the active stroke cache, only if this layer is the active layer + * that is being edited. (Stroke buffer is currently stored in gp-data) + */ + if (ED_gpencil_session_active() && (gpd->runtime.sbuffer_size > 0)) { + if ((gpd->runtime.sbuffer_sflag & GP_STROKE_ERASER) == 0) { + /* It should also be noted that sbuffer contains temporary point types + * i.e. tGPspoints NOT bGPDspoints + */ + short lthick = brush->size * obscale; + /* if only one point, don't need to draw buffer because the user has no time to see it */ + if (gpd->runtime.sbuffer_size > 1) { + if ((gp_style) && (gp_style->mode == GP_STYLE_MODE_LINE)) { + stl->g_data->shgrps_drawing_stroke = DRW_gpencil_shgroup_stroke_create( + e_data, vedata, psl->drawing_pass, e_data->gpencil_stroke_sh, NULL, gpd, gp_style, -1, false); + } + else { + stl->g_data->shgrps_drawing_stroke = DRW_gpencil_shgroup_point_create( + e_data, vedata, psl->drawing_pass, e_data->gpencil_point_sh, NULL, gpd, gp_style, -1, false); + } + + /* clean previous version of the batch */ + if (stl->storage->buffer_stroke) { + GPU_BATCH_DISCARD_SAFE(e_data->batch_buffer_stroke); + MEM_SAFE_FREE(e_data->batch_buffer_stroke); + stl->storage->buffer_stroke = false; + } + + /* use unit matrix because the buffer is in screen space and does not need conversion */ + if (gpd->runtime.mode == GP_STYLE_MODE_LINE) { + e_data->batch_buffer_stroke = DRW_gpencil_get_buffer_stroke_geom( + gpd, lthick); + } + else { + e_data->batch_buffer_stroke = DRW_gpencil_get_buffer_point_geom( + gpd, lthick); + } + + if (gp_style->flag & GP_STYLE_STROKE_SHOW) { + DRW_shgroup_call_add( + stl->g_data->shgrps_drawing_stroke, + e_data->batch_buffer_stroke, + stl->storage->unit_matrix); + } + + if ((gpd->runtime.sbuffer_size >= 3) && + (gpd->runtime.sfill[3] > GPENCIL_ALPHA_OPACITY_THRESH) && + ((gpd->runtime.sbuffer_sflag & GP_STROKE_NOFILL) == 0) && + ((brush->gpencil_settings->flag & GP_BRUSH_DISSABLE_LASSO) == 0) && + (gp_style->flag & GP_STYLE_FILL_SHOW)) + { + /* if not solid, fill is simulated with solid color */ + if (gpd->runtime.bfill_style > 0) { + gpd->runtime.sfill[3] = 0.5f; + } + stl->g_data->shgrps_drawing_fill = DRW_shgroup_create( + e_data->gpencil_drawing_fill_sh, psl->drawing_pass); + + /* clean previous version of the batch */ + if (stl->storage->buffer_fill) { + GPU_BATCH_DISCARD_SAFE(e_data->batch_buffer_fill); + MEM_SAFE_FREE(e_data->batch_buffer_fill); + stl->storage->buffer_fill = false; + } + + e_data->batch_buffer_fill = DRW_gpencil_get_buffer_fill_geom(gpd); + DRW_shgroup_call_add( + stl->g_data->shgrps_drawing_fill, + e_data->batch_buffer_fill, + stl->storage->unit_matrix); + stl->storage->buffer_fill = true; + } + stl->storage->buffer_stroke = true; + } + } + } +} + +/* create all missing batches */ +static void DRW_gpencil_create_batches(GpencilBatchCache *cache) +{ + if ((cache->b_point.vbo) && (cache->b_point.batch == NULL)) { + cache->b_point.batch = GPU_batch_create_ex(GPU_PRIM_POINTS, cache->b_point.vbo, NULL, GPU_BATCH_OWNS_VBO); + } + if ((cache->b_stroke.vbo) && (cache->b_stroke.batch == NULL)) { + cache->b_stroke.batch = GPU_batch_create_ex(GPU_PRIM_LINE_STRIP_ADJ, cache->b_stroke.vbo, NULL, GPU_BATCH_OWNS_VBO); + } + if ((cache->b_fill.vbo) && (cache->b_fill.batch == NULL)) { + cache->b_fill.batch = GPU_batch_create_ex(GPU_PRIM_TRIS, cache->b_fill.vbo, NULL, GPU_BATCH_OWNS_VBO); + } + if ((cache->b_edit.vbo) && (cache->b_edit.batch == NULL)) { + cache->b_edit.batch = GPU_batch_create_ex(GPU_PRIM_POINTS, cache->b_edit.vbo, NULL, GPU_BATCH_OWNS_VBO); + } + if ((cache->b_edlin.vbo) && (cache->b_edlin.batch == NULL)) { + cache->b_edlin.batch = GPU_batch_create_ex(GPU_PRIM_LINE_STRIP, cache->b_edlin.vbo, NULL, GPU_BATCH_OWNS_VBO); + } +} + +/* create all shading groups */ +static void DRW_gpencil_shgroups_create( + GPENCIL_e_data *e_data, void *vedata, + Object *ob, + GpencilBatchCache *cache, tGPencilObjectCache *cache_ob) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + bGPdata *gpd = (bGPdata *)ob->data; + + GpencilBatchGroup *elm = NULL; + DRWShadingGroup *shgrp = NULL; + tGPencilObjectCache_shgrp *array_elm = NULL; + + bGPDlayer *gpl = NULL; + bGPDlayer *gpl_prev = NULL; + int idx = 0; + bool tag_first = false; + + int start_stroke = 0; + int start_point = 0; + int start_fill = 0; + int start_edit = 0; + int start_edlin = 0; + + for (int i = 0; i < cache->grp_used; i++) { + elm = &cache->grp_cache[i]; + array_elm = &cache_ob->shgrp_array[idx]; + + /* save last group when change */ + if (gpl_prev == NULL) { + gpl_prev = elm->gpl; + tag_first = true; + } + else { + if (elm->gpl != gpl_prev) { + /* first layer is always blend Normal */ + array_elm->mode = idx == 0 ? eGplBlendMode_Normal: gpl->blend_mode; + array_elm->end_shgrp = shgrp; + gpl_prev = elm->gpl; + tag_first = true; + idx++; + } + } + + gpl = elm->gpl; + bGPDframe *gpf = elm->gpf; + bGPDstroke *gps = elm->gps; + MaterialGPencilStyle *gp_style = BKE_material_gpencil_settings_get(ob, gps->mat_nr + 1); + + /* limit the number of shading groups */ + if (i >= GPENCIL_MAX_SHGROUPS) { + break; + } + + switch (elm->type) { + case eGpencilBatchGroupType_Stroke: + { + const int len = elm->vertex_idx - start_stroke; + + shgrp = DRW_gpencil_shgroup_stroke_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_stroke_sh, + ob, gpd, gp_style, stl->storage->shgroup_id, elm->onion); + + DRW_shgroup_call_range_add( + shgrp, cache->b_stroke.batch, + (!cache_ob->is_dup_ob) ? gpf->runtime.viewmatrix : cache_ob->obmat, + start_stroke, len); + + stl->storage->shgroup_id++; + start_stroke = elm->vertex_idx; + break; + } + case eGpencilBatchGroupType_Point: + { + const int len = elm->vertex_idx - start_point; + + shgrp = DRW_gpencil_shgroup_point_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_point_sh, + ob, gpd, gp_style, stl->storage->shgroup_id, elm->onion); + + DRW_shgroup_call_range_add( + shgrp, cache->b_point.batch, + (!cache_ob->is_dup_ob) ? gpf->runtime.viewmatrix : cache_ob->obmat, + start_point, len); + + stl->storage->shgroup_id++; + start_point = elm->vertex_idx; + break; + } + case eGpencilBatchGroupType_Fill: + { + const int len = elm->vertex_idx - start_fill; + + shgrp = DRW_gpencil_shgroup_fill_create( + e_data, vedata, psl->stroke_pass, e_data->gpencil_fill_sh, + gpd, gpl, gp_style, stl->storage->shgroup_id); + + DRW_shgroup_call_range_add( + shgrp, cache->b_fill.batch, + (!cache_ob->is_dup_ob) ? gpf->runtime.viewmatrix : cache_ob->obmat, + start_fill, len); + + stl->storage->shgroup_id++; + start_fill = elm->vertex_idx; + break; + } + case eGpencilBatchGroupType_Edit: + { + const int len = elm->vertex_idx - start_edit; + /* use always the same group */ + DRW_shgroup_call_range_add( + stl->g_data->shgrps_edit_point, + cache->b_edit.batch, + (!cache_ob->is_dup_ob) ? gpf->runtime.viewmatrix : cache_ob->obmat, + start_edit, len); + + start_edit = elm->vertex_idx; + break; + } + case eGpencilBatchGroupType_Edlin: + { + const int len = elm->vertex_idx - start_edlin; + /* use always the same group */ + DRW_shgroup_call_range_add( + stl->g_data->shgrps_edit_line, + cache->b_edlin.batch, + (!cache_ob->is_dup_ob) ? gpf->runtime.viewmatrix : cache_ob->obmat, + start_edlin, len); + + start_edlin = elm->vertex_idx; + break; + } + default: + { + break; + } + } + /* save first group */ + if ((shgrp != NULL) && (tag_first)) { + array_elm = &cache_ob->shgrp_array[idx]; + array_elm->mode = idx == 0 ? eGplBlendMode_Normal: gpl->blend_mode; + array_elm->clamp_layer = gpl->flag & GP_LAYER_USE_MASK; + array_elm->blend_opacity = gpl->opacity; + array_elm->init_shgrp = shgrp; + cache_ob->tot_layers++; + + tag_first = false; + } + } + + /* save last group */ + if (shgrp != NULL) { + array_elm->mode = idx == 0 ? eGplBlendMode_Normal : gpl->blend_mode; + array_elm->end_shgrp = shgrp; + } +} +/* populate a datablock for multiedit (no onions, no modifiers) */ +void DRW_gpencil_populate_multiedit( + GPENCIL_e_data *e_data, void *vedata, Object *ob, + tGPencilObjectCache *cache_ob) +{ + bGPdata *gpd = (bGPdata *)ob->data; + bGPDframe *gpf = NULL; + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + int cfra_eval = (int)DEG_get_ctime(draw_ctx->depsgraph); + GpencilBatchCache *cache = gpencil_batch_cache_get(ob, cfra_eval); + Scene *scene = draw_ctx->scene; + ToolSettings *ts = scene->toolsettings; + + /* check if playing animation */ + bool playing = stl->storage->is_playing; + + /* calc max size of VBOs */ + gpencil_calc_vertex(stl, cache_ob, cache, gpd, cfra_eval); + + /* draw strokes */ + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + /* don't draw layer if hidden */ + if (gpl->flag & GP_LAYER_HIDE) + continue; + + /* list of frames to draw */ + if (!playing) { + for (gpf = gpl->frames.first; gpf; gpf = gpf->next) { + if ((gpf == gpl->actframe) || (gpf->flag & GP_FRAME_SELECT)) { + gpencil_draw_strokes( + cache, e_data, vedata, ts, ob, gpd, gpl, gpf, gpf, + gpl->opacity, gpl->tintcolor, false, cache_ob); + } + } + } + else { + gpf = BKE_gpencil_layer_getframe(gpl, cfra_eval, GP_GETFRAME_USE_PREV); + if (gpf) { + gpencil_draw_strokes( + cache, e_data, vedata, ts, ob, gpd, gpl, gpf, gpf, + gpl->opacity, gpl->tintcolor, false, cache_ob); + } + } + + } + + /* create batchs and shading groups */ + DRW_gpencil_create_batches(cache); + DRW_gpencil_shgroups_create(e_data, vedata, ob, cache, cache_ob); + + cache->is_dirty = false; +} + +/* helper for populate a complete grease pencil datablock */ +void DRW_gpencil_populate_datablock( + GPENCIL_e_data *e_data, void *vedata, + Object *ob, + tGPencilObjectCache *cache_ob) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + const ViewLayer *view_layer = DEG_get_evaluated_view_layer(draw_ctx->depsgraph); + Scene *scene = draw_ctx->scene; + + bGPdata *gpd_eval = (bGPdata *)ob->data; + bGPdata *gpd = (bGPdata *)DEG_get_original_id(&gpd_eval->id); + + View3D *v3d = draw_ctx->v3d; + int cfra_eval = (int)DEG_get_ctime(draw_ctx->depsgraph); + ToolSettings *ts = scene->toolsettings; + + bGPDframe *derived_gpf = NULL; + const bool main_onion = v3d != NULL ? (v3d->gp_flag & V3D_GP_SHOW_ONION_SKIN) : true; + const bool do_onion = (bool)((gpd->flag & GP_DATA_STROKE_WEIGHTMODE) == 0) && main_onion; + const bool overlay = v3d != NULL ? (bool)((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) : true; + const bool time_remap = BKE_gpencil_has_time_modifiers(ob); + + float opacity; + bGPDframe *gpf = NULL; + bGPDlayer *gpl_active = BKE_gpencil_layer_getactive(gpd); + + /* check if playing animation */ + bool playing = stl->storage->is_playing; + + GpencilBatchCache *cache = gpencil_batch_cache_get(ob, cfra_eval); + + /* if object is duplicate, only create shading groups */ + if (cache_ob->is_dup_ob) { + DRW_gpencil_shgroups_create(e_data, vedata, ob, cache, cache_ob); + return; + } + + /* calc max size of VBOs */ + gpencil_calc_vertex(stl, cache_ob, cache, gpd, cfra_eval); + + /* init general modifiers data */ + if (!stl->storage->simplify_modif) { + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first)) { + BKE_gpencil_lattice_init(ob); + } + } + /* draw normal strokes */ + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + /* don't draw layer if hidden */ + if (gpl->flag & GP_LAYER_HIDE) { + continue; + } + + /* filter view layer to gp layers in the same view layer (for compo) */ + if ((stl->storage->is_render) && (gpl->viewlayername[0] != '\0')) { + if (!STREQ(view_layer->name, gpl->viewlayername)) { + continue; + } + } + + /* remap time */ + int remap_cfra = cfra_eval; + if ((time_remap) && (!stl->storage->simplify_modif)) { + remap_cfra = BKE_gpencil_time_modifier( + draw_ctx->depsgraph, scene, ob, gpl, cfra_eval, + stl->storage->is_render); + } + + gpf = BKE_gpencil_layer_getframe(gpl, remap_cfra, GP_GETFRAME_USE_PREV); + if (gpf == NULL) + continue; + + opacity = gpl->opacity; + /* if pose mode, maybe the overlay to fade geometry is enabled */ + if ((draw_ctx->obact) && (draw_ctx->object_mode == OB_MODE_POSE) && + (v3d->overlay.flag & V3D_OVERLAY_BONE_SELECT)) + { + opacity = opacity * v3d->overlay.xray_alpha_bone; + } + /* fade no active layers */ + if ((overlay) && (draw_ctx->object_mode == OB_MODE_GPENCIL_PAINT) && + (v3d->gp_flag & V3D_GP_FADE_NOACTIVE_LAYERS) && + (draw_ctx->obact) && (draw_ctx->obact == ob) && + (gpl != gpl_active)) + { + opacity = opacity * v3d->overlay.gpencil_fade_layer; + } + + /* create derived frames array data or expand */ + int derived_idx = BLI_findindex(&gpd->layers, gpl); + derived_gpf = &cache->derived_array[derived_idx]; + + /* if no derived frame or dirty cache, create a new one */ + if ((derived_gpf == NULL) || (cache->is_dirty)) { + if (derived_gpf != NULL) { + /* first clear temp data */ + BKE_gpencil_free_frame_runtime_data(derived_gpf); + } + /* create new data (do not assign new memory)*/ + gpencil_copy_frame(gpf, derived_gpf); + } + + /* draw onion skins */ + if (!ID_IS_LINKED(&gpd->id)) { + if ((gpd->flag & GP_DATA_SHOW_ONIONSKINS) && + (do_onion) && (gpl->onion_flag & GP_LAYER_ONIONSKIN) && + ((!playing) || (gpd->onion_flag & GP_ONION_GHOST_ALWAYS)) && + (!cache_ob->is_dup_ob) && (gpd->id.us <= 1)) + { + if (((!stl->storage->is_render) && (overlay)) || + ((stl->storage->is_render) && (gpd->onion_flag & GP_ONION_GHOST_ALWAYS))) + { + gpencil_draw_onionskins(cache, e_data, vedata, ob, gpd, gpl, gpf); + } + } + } + /* draw normal strokes */ + gpencil_draw_strokes( + cache, e_data, vedata, ts, ob, gpd, gpl, gpf, derived_gpf, + opacity, gpl->tintcolor, false, cache_ob); + } + + /* clear any lattice data */ + if ((cache->is_dirty) && (ob->greasepencil_modifiers.first)) { + BKE_gpencil_lattice_clear(ob); + } + + /* create batchs and shading groups */ + DRW_gpencil_create_batches(cache); + DRW_gpencil_shgroups_create(e_data, vedata, ob, cache, cache_ob); + + cache->is_dirty = false; +} + +void DRW_gpencil_populate_particles(GPENCIL_e_data *e_data, void *vedata) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + + /* add particles */ + for (int i = 0; i < stl->g_data->gp_cache_used; i++) { + tGPencilObjectCache *cache_ob = &stl->g_data->gp_object_cache[i]; + Object *ob = cache_ob->ob; + if (cache_ob->is_dup_ob) { + GpencilBatchCache *cache = ob->runtime.gpencil_cache; + DRW_gpencil_shgroups_create(e_data, vedata, ob, cache, cache_ob); + } + } +} diff --git a/source/blender/draw/engines/gpencil/gpencil_engine.c b/source/blender/draw/engines/gpencil/gpencil_engine.c new file mode 100644 index 00000000000..483d6a80991 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_engine.c @@ -0,0 +1,924 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_engine.c + * \ingroup draw + */ +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "BKE_camera.h" +#include "BKE_object.h" +#include "BKE_paint.h" +#include "BKE_gpencil.h" +#include "BKE_shader_fx.h" + +#include "DNA_gpencil_types.h" +#include "DNA_view3d_types.h" + +#include "draw_mode_engines.h" + +#include "UI_resources.h" + +#include "GPU_texture.h" + +#include "gpencil_engine.h" + +#include "DEG_depsgraph_query.h" + +#include "ED_screen.h" +#include "ED_gpencil.h" + +#include "WM_api.h" + +extern char datatoc_gpencil_fill_vert_glsl[]; +extern char datatoc_gpencil_fill_frag_glsl[]; +extern char datatoc_gpencil_stroke_vert_glsl[]; +extern char datatoc_gpencil_stroke_geom_glsl[]; +extern char datatoc_gpencil_stroke_frag_glsl[]; +extern char datatoc_gpencil_zdepth_mix_frag_glsl[]; +extern char datatoc_gpencil_simple_mix_frag_glsl[]; +extern char datatoc_gpencil_point_vert_glsl[]; +extern char datatoc_gpencil_point_geom_glsl[]; +extern char datatoc_gpencil_point_frag_glsl[]; +extern char datatoc_gpencil_background_frag_glsl[]; +extern char datatoc_gpencil_paper_frag_glsl[]; +extern char datatoc_gpencil_edit_point_vert_glsl[]; +extern char datatoc_gpencil_edit_point_geom_glsl[]; +extern char datatoc_gpencil_edit_point_frag_glsl[]; +extern char datatoc_gpencil_blend_frag_glsl[]; + +/* *********** STATIC *********** */ +static GPENCIL_e_data e_data = {NULL}; /* Engine data */ + +/* *********** FUNCTIONS *********** */ + +/* create a multisample buffer if not present */ +void DRW_gpencil_multisample_ensure(GPENCIL_Data *vedata, int rect_w, int rect_h) +{ + GPENCIL_FramebufferList *fbl = vedata->fbl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_TextureList *txl = ((GPENCIL_Data *)vedata)->txl; + + short samples = stl->storage->multisamples; + + if (samples > 0) { + if (!fbl->multisample_fb) { + fbl->multisample_fb = GPU_framebuffer_create(); + if (fbl->multisample_fb) { + if (txl->multisample_color == NULL) { + txl->multisample_color = GPU_texture_create_2D_multisample( + rect_w, rect_h, GPU_RGBA16F, NULL, samples, NULL); + } + if (txl->multisample_depth == NULL) { + txl->multisample_depth = GPU_texture_create_2D_multisample( + rect_w, rect_h, GPU_DEPTH24_STENCIL8, NULL, samples, NULL); + } + GPU_framebuffer_ensure_config( + &fbl->multisample_fb, { + GPU_ATTACHMENT_TEXTURE(txl->multisample_depth), + GPU_ATTACHMENT_TEXTURE(txl->multisample_color) + }); + } + } + } +} + +static void GPENCIL_create_framebuffers(void *vedata) +{ + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + + /* Go full 32bits for rendering */ + GPUTextureFormat fb_format = DRW_state_is_image_render() ? GPU_RGBA32F : GPU_RGBA16F; + + if (DRW_state_is_fbo()) { + const float *viewport_size = DRW_viewport_size_get(); + const int size[2] = { (int)viewport_size[0], (int)viewport_size[1] }; + + /* create multiframe framebuffer for AA */ + if (stl->storage->multisamples > 0) { + DRW_gpencil_multisample_ensure(vedata, size[0], size[1]); + } + + /* temp textures */ + e_data.temp_depth_tx_a = DRW_texture_pool_query_2D(size[0], size[1], GPU_DEPTH24_STENCIL8, + &draw_engine_gpencil_type); + e_data.temp_color_tx_a = DRW_texture_pool_query_2D(size[0], size[1], fb_format, + &draw_engine_gpencil_type); + GPU_framebuffer_ensure_config( + &fbl->temp_fb_a, { + GPU_ATTACHMENT_TEXTURE(e_data.temp_depth_tx_a), + GPU_ATTACHMENT_TEXTURE(e_data.temp_color_tx_a) + }); + + e_data.temp_depth_tx_b = DRW_texture_pool_query_2D( + size[0], size[1], GPU_DEPTH24_STENCIL8, + &draw_engine_gpencil_type); + e_data.temp_color_tx_b = DRW_texture_pool_query_2D( + size[0], size[1], fb_format, + &draw_engine_gpencil_type); + GPU_framebuffer_ensure_config( + &fbl->temp_fb_b, { + GPU_ATTACHMENT_TEXTURE(e_data.temp_depth_tx_b), + GPU_ATTACHMENT_TEXTURE(e_data.temp_color_tx_b) + }); + + /* used for rim and shadow FX effects */ + e_data.temp_depth_tx_fx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_DEPTH24_STENCIL8, + &draw_engine_gpencil_type); + e_data.temp_color_tx_fx = DRW_texture_pool_query_2D( + size[0], size[1], fb_format, + &draw_engine_gpencil_type); + GPU_framebuffer_ensure_config( + &fbl->temp_fb_fx, { + GPU_ATTACHMENT_TEXTURE(e_data.temp_depth_tx_fx), + GPU_ATTACHMENT_TEXTURE(e_data.temp_color_tx_fx), + }); + + /* background framebuffer to speed up drawing process (always 16 bits) */ + e_data.background_depth_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_DEPTH24_STENCIL8, + &draw_engine_gpencil_type); + e_data.background_color_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_RGBA32F, + &draw_engine_gpencil_type); + GPU_framebuffer_ensure_config( + &fbl->background_fb, { + GPU_ATTACHMENT_TEXTURE(e_data.background_depth_tx), + GPU_ATTACHMENT_TEXTURE(e_data.background_color_tx) + }); + } +} + +static void GPENCIL_create_shaders(void) +{ + /* normal fill shader */ + if (!e_data.gpencil_fill_sh) { + e_data.gpencil_fill_sh = DRW_shader_create( + datatoc_gpencil_fill_vert_glsl, NULL, + datatoc_gpencil_fill_frag_glsl, NULL); + } + + /* normal stroke shader using geometry to display lines (line mode) */ + if (!e_data.gpencil_stroke_sh) { + e_data.gpencil_stroke_sh = DRW_shader_create( + datatoc_gpencil_stroke_vert_glsl, + datatoc_gpencil_stroke_geom_glsl, + datatoc_gpencil_stroke_frag_glsl, + NULL); + } + + /* dot/rectangle mode for normal strokes using geometry */ + if (!e_data.gpencil_point_sh) { + e_data.gpencil_point_sh = DRW_shader_create( + datatoc_gpencil_point_vert_glsl, + datatoc_gpencil_point_geom_glsl, + datatoc_gpencil_point_frag_glsl, + NULL); + } + /* used for edit points or strokes with one point only */ + if (!e_data.gpencil_edit_point_sh) { + e_data.gpencil_edit_point_sh = DRW_shader_create( + datatoc_gpencil_edit_point_vert_glsl, + datatoc_gpencil_edit_point_geom_glsl, + datatoc_gpencil_edit_point_frag_glsl, NULL); + } + + /* used for edit lines for edit modes */ + if (!e_data.gpencil_line_sh) { + e_data.gpencil_line_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_FLAT_COLOR); + } + + /* used to filling during drawing */ + if (!e_data.gpencil_drawing_fill_sh) { + e_data.gpencil_drawing_fill_sh = GPU_shader_get_builtin_shader(GPU_SHADER_3D_SMOOTH_COLOR); + } + + /* full screen for mix zdepth*/ + if (!e_data.gpencil_fullscreen_sh) { + e_data.gpencil_fullscreen_sh = DRW_shader_create_fullscreen(datatoc_gpencil_zdepth_mix_frag_glsl, NULL); + } + if (!e_data.gpencil_simple_fullscreen_sh) { + e_data.gpencil_simple_fullscreen_sh = DRW_shader_create_fullscreen(datatoc_gpencil_simple_mix_frag_glsl, NULL); + } + + /* blend */ + if (!e_data.gpencil_blend_fullscreen_sh) { + e_data.gpencil_blend_fullscreen_sh = DRW_shader_create_fullscreen(datatoc_gpencil_blend_frag_glsl, NULL); + } + + /* shaders for use when drawing */ + if (!e_data.gpencil_background_sh) { + e_data.gpencil_background_sh = DRW_shader_create_fullscreen(datatoc_gpencil_background_frag_glsl, NULL); + } + if (!e_data.gpencil_paper_sh) { + e_data.gpencil_paper_sh = DRW_shader_create_fullscreen(datatoc_gpencil_paper_frag_glsl, NULL); + } +} + +void GPENCIL_engine_init(void *vedata) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + /* init storage */ + if (!stl->storage) { + stl->storage = MEM_callocN(sizeof(GPENCIL_Storage), "GPENCIL_Storage"); + + /* unit matrix */ + unit_m4(stl->storage->unit_matrix); + } + + stl->storage->multisamples = U.gpencil_multisamples; + + /* create framebuffers */ + GPENCIL_create_framebuffers(vedata); + + /* create shaders */ + GPENCIL_create_shaders(); + GPENCIL_create_fx_shaders(&e_data); + + /* blank texture used if no texture defined for fill shader */ + if (!e_data.gpencil_blank_texture) { + float rect[16][16][4] = {{{0.0f}}}; + e_data.gpencil_blank_texture = DRW_texture_create_2D(16, 16, GPU_RGBA8, DRW_TEX_FILTER, (float *)rect); + } +} + +static void GPENCIL_engine_free(void) +{ + /* only free custom shaders, builtin shaders are freed in blender close */ + DRW_SHADER_FREE_SAFE(e_data.gpencil_fill_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_stroke_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_point_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_edit_point_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_fullscreen_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_simple_fullscreen_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_blend_fullscreen_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_background_sh); + DRW_SHADER_FREE_SAFE(e_data.gpencil_paper_sh); + + DRW_TEXTURE_FREE_SAFE(e_data.gpencil_blank_texture); + + GPU_BATCH_DISCARD_SAFE(e_data.batch_buffer_stroke); + MEM_SAFE_FREE(e_data.batch_buffer_stroke); + + GPU_BATCH_DISCARD_SAFE(e_data.batch_buffer_fill); + MEM_SAFE_FREE(e_data.batch_buffer_fill); + + GPU_BATCH_DISCARD_SAFE(e_data.batch_grid); + MEM_SAFE_FREE(e_data.batch_grid); + + /* effects */ + GPENCIL_delete_fx_shaders(&e_data); +} + +void GPENCIL_cache_init(void *vedata) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + View3D *v3d = draw_ctx->v3d; + + /* Special handling for when active object is GP object (e.g. for draw mode) */ + Object *obact = draw_ctx->obact; + bGPdata *obact_gpd = NULL; + MaterialGPencilStyle *gp_style = NULL; + + if (obact && (obact->type == OB_GPENCIL) && (obact->data)) { + obact_gpd = (bGPdata *)obact->data; + gp_style = BKE_material_gpencil_settings_get(obact, obact->actcol); + } + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_mallocN(sizeof(g_data), "g_data"); + stl->storage->xray = GP_XRAY_FRONT; /* used for drawing */ + stl->storage->stroke_style = GP_STYLE_STROKE_STYLE_SOLID; /* used for drawing */ + } + stl->storage->tonemapping = 0; + + stl->g_data->shgrps_edit_line = NULL; + stl->g_data->shgrps_edit_point = NULL; + + if (!stl->shgroups) { + /* Alloc maximum size because count strokes is very slow and can be very complex due onion skinning. + */ + stl->shgroups = MEM_mallocN(sizeof(GPENCIL_shgroup) * GPENCIL_MAX_SHGROUPS, "GPENCIL_shgroup"); + } + + /* init gp objects cache */ + stl->g_data->gp_cache_used = 0; + stl->g_data->gp_cache_size = 0; + stl->g_data->gp_object_cache = NULL; + + { + /* Stroke pass */ + psl->stroke_pass = DRW_pass_create( + "GPencil Stroke Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_ALWAYS | DRW_STATE_BLEND); + stl->storage->shgroup_id = 0; + + /* edit pass */ + psl->edit_pass = DRW_pass_create( + "GPencil Edit Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND); + + /* detect if playing animation */ + if (draw_ctx->evil_C) { + + bool playing = ED_screen_animation_playing(CTX_wm_manager(draw_ctx->evil_C)) != NULL; + if (playing != stl->storage->is_playing) { + stl->storage->reset_cache = true; + } + stl->storage->is_playing = playing; + } + else { + stl->storage->is_playing = false; + stl->storage->reset_cache = false; + } + /* save render state */ + stl->storage->is_render = DRW_state_is_image_render(); + stl->storage->is_mat_preview = (bool)stl->storage->is_render && STREQ(scene->id.name + 2, "preview"); + + if (obact_gpd) { + /* for some reason, when press play there is a delay in the animation flag check + * and this produces errors. To be sure, we set cache as dirty because the frame + * is changing. + */ + if (stl->storage->is_playing == true) { + obact_gpd->flag |= GP_DATA_CACHE_IS_DIRTY; + } + /* if render, set as dirty to update all data */ + else if (stl->storage->is_render == true) { + obact_gpd->flag |= GP_DATA_CACHE_IS_DIRTY; + } + } + + /* save simplify flags (can change while drawing, so it's better to save) */ + stl->storage->simplify_fill = GP_SIMPLIFY_FILL(scene, stl->storage->is_playing); + stl->storage->simplify_modif = GP_SIMPLIFY_MODIF(scene, stl->storage->is_playing); + stl->storage->simplify_fx = GP_SIMPLIFY_FX(scene, stl->storage->is_playing); + stl->storage->simplify_blend = GP_SIMPLIFY_BLEND(scene, stl->storage->is_playing); + + /* save pixsize */ + stl->storage->pixsize = DRW_viewport_pixelsize_get(); + if ((!DRW_state_is_opengl_render()) && (stl->storage->is_render)) { + stl->storage->pixsize = &stl->storage->render_pixsize; + } + + /* detect if painting session */ + if ((obact_gpd) && + (obact_gpd->flag & GP_DATA_STROKE_PAINTMODE) && + (stl->storage->is_playing == false)) + { + /* need the original to avoid cow overhead while drawing */ + bGPdata *gpd_orig = (bGPdata *)DEG_get_original_id(&obact_gpd->id); + if (((gpd_orig->runtime.sbuffer_sflag & GP_STROKE_ERASER) == 0) && + (gpd_orig->runtime.sbuffer_size > 0) && + ((gpd_orig->flag & GP_DATA_STROKE_POLYGON) == 0)) + { + stl->g_data->session_flag |= GP_DRW_PAINT_PAINTING; + } + else { + stl->g_data->session_flag = GP_DRW_PAINT_IDLE; + } + } + else { + /* if not drawing mode */ + stl->g_data->session_flag = GP_DRW_PAINT_HOLD; + } + + if (gp_style) { + stl->storage->stroke_style = gp_style->stroke_style; + stl->storage->color_type = GPENCIL_COLOR_SOLID; + if (gp_style->stroke_style == GP_STYLE_STROKE_STYLE_TEXTURE) { + stl->storage->color_type = GPENCIL_COLOR_TEXTURE; + if (gp_style->flag & GP_STYLE_STROKE_PATTERN) { + stl->storage->color_type = GPENCIL_COLOR_PATTERN; + } + } + } + else { + stl->storage->stroke_style = GP_STYLE_STROKE_STYLE_SOLID; + stl->storage->color_type = GPENCIL_COLOR_SOLID; + } + + /* drawing buffer pass for drawing the stroke that is being drawing by the user. The data + * is stored in sbuffer + */ + psl->drawing_pass = DRW_pass_create( + "GPencil Drawing Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_ALWAYS); + + /* full screen pass to combine the result with default framebuffer */ + struct GPUBatch *quad = DRW_cache_fullscreen_quad_get(); + psl->mix_pass = DRW_pass_create( + "GPencil Mix Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + DRWShadingGroup *mix_shgrp = DRW_shgroup_create(e_data.gpencil_fullscreen_sh, psl->mix_pass); + DRW_shgroup_call_add(mix_shgrp, quad, NULL); + DRW_shgroup_uniform_texture_ref(mix_shgrp, "strokeColor", &e_data.input_color_tx); + DRW_shgroup_uniform_texture_ref(mix_shgrp, "strokeDepth", &e_data.input_depth_tx); + DRW_shgroup_uniform_int(mix_shgrp, "tonemapping", &stl->storage->tonemapping, 1); + + /* mix pass no blend used to copy between passes. A separated pass is required + * because if mix_pass is used, the acumulation of blend degrade the colors. + * + * This pass is used too to take the snapshot used for background_pass. This image + * will be used as the background while the user is drawing. + */ + psl->mix_pass_noblend = DRW_pass_create( + "GPencil Mix Pass no blend", + DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + DRWShadingGroup *mix_shgrp_noblend = DRW_shgroup_create(e_data.gpencil_fullscreen_sh, psl->mix_pass_noblend); + DRW_shgroup_call_add(mix_shgrp_noblend, quad, NULL); + DRW_shgroup_uniform_texture_ref(mix_shgrp_noblend, "strokeColor", &e_data.input_color_tx); + DRW_shgroup_uniform_texture_ref(mix_shgrp_noblend, "strokeDepth", &e_data.input_depth_tx); + DRW_shgroup_uniform_int(mix_shgrp_noblend, "tonemapping", &stl->storage->tonemapping, 1); + + /* Painting session pass (used only to speedup while the user is drawing ) + * This pass is used to show the snapshot of the current grease pencil strokes captured + * when the user starts to draw (see comments above). + * In this way, the previous strokes don't need to be redraw and the drawing process + * is far to agile. + */ + psl->background_pass = DRW_pass_create( + "GPencil Background Painting Session Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + DRWShadingGroup *background_shgrp = DRW_shgroup_create(e_data.gpencil_background_sh, psl->background_pass); + DRW_shgroup_call_add(background_shgrp, quad, NULL); + DRW_shgroup_uniform_texture_ref(background_shgrp, "strokeColor", &e_data.background_color_tx); + DRW_shgroup_uniform_texture_ref(background_shgrp, "strokeDepth", &e_data.background_depth_tx); + + /* pass for drawing paper (only if viewport) + * In render, the v3d is null so the paper is disabled + * The paper is way to isolate the drawing in complex scene and to have a cleaner + * drawing area. + */ + if (v3d) { + psl->paper_pass = DRW_pass_create( + "GPencil Paper Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND); + DRWShadingGroup *paper_shgrp = DRW_shgroup_create(e_data.gpencil_paper_sh, psl->paper_pass); + DRW_shgroup_call_add(paper_shgrp, quad, NULL); + DRW_shgroup_uniform_vec3(paper_shgrp, "color", v3d->shading.background_color, 1); + DRW_shgroup_uniform_float(paper_shgrp, "opacity", &v3d->overlay.gpencil_paper_opacity, 1); + } + + /* grid pass */ + if (v3d) { + psl->grid_pass = DRW_pass_create( + "GPencil Grid Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_ALWAYS); + stl->g_data->shgrps_grid = DRW_shgroup_create(e_data.gpencil_line_sh, psl->grid_pass); + } + + /* blend layers pass */ + psl->blend_pass = DRW_pass_create( + "GPencil Blend Layers Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + DRWShadingGroup *blend_shgrp = DRW_shgroup_create(e_data.gpencil_blend_fullscreen_sh, psl->blend_pass); + DRW_shgroup_call_add(blend_shgrp, quad, NULL); + DRW_shgroup_uniform_texture_ref(blend_shgrp, "strokeColor", &e_data.temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(blend_shgrp, "strokeDepth", &e_data.temp_depth_tx_a); + DRW_shgroup_uniform_texture_ref(blend_shgrp, "blendColor", &e_data.temp_color_tx_fx); + DRW_shgroup_uniform_texture_ref(blend_shgrp, "blendDepth", &e_data.temp_depth_tx_fx); + DRW_shgroup_uniform_int(blend_shgrp, "mode", &stl->storage->blend_mode, 1); + DRW_shgroup_uniform_int(blend_shgrp, "clamp_layer", &stl->storage->clamp_layer, 1); + DRW_shgroup_uniform_float(blend_shgrp, "blend_opacity", &stl->storage->blend_opacity, 1); + DRW_shgroup_uniform_int(mix_shgrp, "tonemapping", &stl->storage->tonemapping, 1); + + /* create effects passes */ + if (!stl->storage->simplify_fx) { + GPENCIL_create_fx_passes(psl); + } + } +} + +static void gpencil_add_draw_data(void *vedata, Object *ob) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + bGPdata *gpd = (bGPdata *)ob->data; + const bool is_multiedit = (bool)GPENCIL_MULTIEDIT_SESSIONS_ON(gpd); + + int i = stl->g_data->gp_cache_used - 1; + tGPencilObjectCache *cache_ob = &stl->g_data->gp_object_cache[i]; + + if (!cache_ob->is_dup_ob) { + /* fill shading groups */ + if (!is_multiedit) { + DRW_gpencil_populate_datablock(&e_data, vedata, ob, cache_ob); + } + else { + DRW_gpencil_populate_multiedit(&e_data, vedata, ob, cache_ob); + } + } + + /* FX passses */ + cache_ob->has_fx = false; + if ((!stl->storage->simplify_fx) && + (BKE_shaderfx_has_gpencil(ob))) + { + cache_ob->has_fx = true; + if ((!stl->storage->simplify_fx) && (!is_multiedit)) { + DRW_gpencil_fx_prepare(&e_data, vedata, cache_ob); + } + } + +} + +void GPENCIL_cache_populate(void *vedata, Object *ob) +{ + /* object must be visible */ + if (!DRW_object_is_visible_in_active_context(ob)) { + return; + } + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + ToolSettings *ts = scene->toolsettings; + View3D *v3d = draw_ctx->v3d; + + if (ob->type == OB_GPENCIL && ob->data) { + bGPdata *gpd = (bGPdata *)ob->data; + + /* when start/stop animation the cache must be set as dirty to reset all data */ + if (stl->storage->reset_cache) { + gpd->flag |= GP_DATA_CACHE_IS_DIRTY; + stl->storage->reset_cache = false; + } + + if ((stl->g_data->session_flag & GP_DRW_PAINT_READY) == 0) { + + /* save gp objects for drawing later */ + stl->g_data->gp_object_cache = gpencil_object_cache_add( + stl->g_data->gp_object_cache, ob, + &stl->g_data->gp_cache_size, &stl->g_data->gp_cache_used); + + /* load drawing data */ + gpencil_add_draw_data(vedata, ob); + } + + /* draw current painting strokes + * (only if region is equal to originated paint region) + */ + if ((draw_ctx->obact == ob) && + ((gpd->runtime.ar == NULL) || (gpd->runtime.ar == draw_ctx->ar))) + { + DRW_gpencil_populate_buffer_strokes(&e_data, vedata, ts, ob); + } + + /* grid */ + if ((v3d) && + ((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) && + (v3d->gp_flag & V3D_GP_SHOW_GRID) && + (ob->type == OB_GPENCIL) && (ob == draw_ctx->obact)) + { + GPU_BATCH_DISCARD_SAFE(e_data.batch_grid); + MEM_SAFE_FREE(e_data.batch_grid); + + e_data.batch_grid = DRW_gpencil_get_grid(ob); + + /* define grid orientation */ + if (ts->gp_sculpt.lock_axis != GP_LOCKAXIS_VIEW) { + copy_m4_m4(stl->storage->grid_matrix, ob->obmat); + } + else { + /* align always to view */ + invert_m4_m4(stl->storage->grid_matrix, draw_ctx->rv3d->viewmat); + /* copy ob location */ + copy_v3_v3(stl->storage->grid_matrix[3], ob->obmat[3]); + } + + DRW_shgroup_call_add( + stl->g_data->shgrps_grid, + e_data.batch_grid, + stl->storage->grid_matrix); + } + } +} + +void GPENCIL_cache_finish(void *vedata) +{ + DRW_gpencil_populate_particles(&e_data, vedata); +} + +/* helper function to sort inverse gpencil objects using qsort */ +static int gpencil_object_cache_compare_zdepth(const void *a1, const void *a2) +{ + const tGPencilObjectCache *ps1 = a1, *ps2 = a2; + + if (ps1->zdepth < ps2->zdepth) return 1; + else if (ps1->zdepth > ps2->zdepth) return -1; + + return 0; +} + +/* prepare a texture with full viewport screenshot for fast drawing */ +static void gpencil_prepare_fast_drawing( + GPENCIL_StorageList *stl, DefaultFramebufferList *dfbl, + GPENCIL_FramebufferList *fbl, DRWPass *pass, + const float clearcol[4]) +{ + if (stl->g_data->session_flag & (GP_DRW_PAINT_IDLE | GP_DRW_PAINT_FILLING)) { + GPU_framebuffer_bind(fbl->background_fb); + /* clean only in first loop cycle */ + if (stl->g_data->session_flag & GP_DRW_PAINT_IDLE) { + GPU_framebuffer_clear_color_depth(fbl->background_fb, clearcol, 1.0f); + stl->g_data->session_flag = GP_DRW_PAINT_FILLING; + } + /* repeat pass to fill temp texture */ + DRW_draw_pass(pass); + /* set default framebuffer again */ + GPU_framebuffer_bind(dfbl->default_fb); + } +} + +static void gpencil_free_obj_runtime(GPENCIL_StorageList *stl) +{ + /* reset all cache flags */ + for (int i = 0; i < stl->g_data->gp_cache_used; i++) { + tGPencilObjectCache *cache_ob = &stl->g_data->gp_object_cache[i]; + bGPdata *gpd = cache_ob->gpd; + gpd->flag &= ~GP_DATA_CACHE_IS_DIRTY; + + /* free shgrp array */ + cache_ob->tot_layers = 0; + MEM_SAFE_FREE(cache_ob->shgrp_array); + } + + /* free the cache itself */ + MEM_SAFE_FREE(stl->g_data->gp_object_cache); +} + +static void gpencil_draw_pass_range( + GPENCIL_FramebufferList *fbl, GPENCIL_StorageList *stl, + GPENCIL_PassList *psl, GPENCIL_TextureList *txl, + GPUFrameBuffer *fb, + DRWShadingGroup *init_shgrp, DRWShadingGroup *end_shgrp, bool multi) +{ + if (init_shgrp == NULL) { + return; + } + + /* previews don't use AA */ + if ((!stl->storage->is_mat_preview) && (multi)) { + MULTISAMPLE_GP_SYNC_ENABLE(stl->storage->multisamples, fbl); + } + + DRW_draw_pass_subset( + psl->stroke_pass, init_shgrp, end_shgrp); + + if ((!stl->storage->is_mat_preview) && (multi)) { + MULTISAMPLE_GP_SYNC_DISABLE(stl->storage->multisamples, fbl, fb, txl); + } + +} + +/* draw scene */ +void GPENCIL_draw_scene(void *ved) +{ + GPENCIL_Data *vedata = (GPENCIL_Data *)ved; + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + GPENCIL_TextureList *txl = ((GPENCIL_Data *)vedata)->txl; + + tGPencilObjectCache *cache_ob; + tGPencilObjectCache_shgrp *array_elm = NULL; + DRWShadingGroup *init_shgrp = NULL; + DRWShadingGroup *end_shgrp = NULL; + + const float clearcol[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + Object *obact = draw_ctx->obact; + const bool playing = stl->storage->is_playing; + const bool is_render = stl->storage->is_render; + + /* paper pass to display a comfortable area to draw over complex scenes with geometry */ + if ((!is_render) && (obact) && (obact->type == OB_GPENCIL)) { + if (((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) && + (v3d->gp_flag & V3D_GP_SHOW_PAPER)) + { + DRW_draw_pass(psl->paper_pass); + } + } + + /* if we have a painting session, we use fast viewport drawing method */ + if ((!is_render) && (stl->g_data->session_flag & GP_DRW_PAINT_PAINTING)) { + GPU_framebuffer_bind(dfbl->default_fb); + + MULTISAMPLE_GP_SYNC_ENABLE(stl->storage->multisamples, fbl); + + DRW_draw_pass(psl->background_pass); + DRW_draw_pass(psl->drawing_pass); + + MULTISAMPLE_GP_SYNC_DISABLE(stl->storage->multisamples, fbl, dfbl->default_fb, txl); + + /* free memory */ + gpencil_free_obj_runtime(stl); + + /* grid pass */ + if ((!is_render) && (obact) && (obact->type == OB_GPENCIL)) { + if (((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) && + (v3d->gp_flag & V3D_GP_SHOW_GRID)) + { + DRW_draw_pass(psl->grid_pass); + } + } + + return; + } + + if (DRW_state_is_fbo()) { + + /* Draw all pending objects */ + if (stl->g_data->gp_cache_used > 0) { + + /* sort by zdepth */ + qsort(stl->g_data->gp_object_cache, stl->g_data->gp_cache_used, + sizeof(tGPencilObjectCache), gpencil_object_cache_compare_zdepth); + + for (int i = 0; i < stl->g_data->gp_cache_used; i++) { + cache_ob = &stl->g_data->gp_object_cache[i]; + bGPdata *gpd = cache_ob->gpd; + init_shgrp = NULL; + /* Render stroke in separated framebuffer */ + GPU_framebuffer_bind(fbl->temp_fb_a); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_a, clearcol, 1.0f); + + /* Stroke Pass: + * draw only a subset that usually starts with a fill and ends with stroke + */ + bool use_blend = false; + if (cache_ob->tot_layers > 0) { + for (int e = 0; e < cache_ob->tot_layers; e++) { + bool is_last = e == cache_ob->tot_layers - 1 ? true : false; + array_elm = &cache_ob->shgrp_array[e]; + + if (((array_elm->mode == eGplBlendMode_Normal) && + (!use_blend) && (!array_elm->clamp_layer)) || + (e == 0)) + { + if (init_shgrp == NULL) { + init_shgrp = array_elm->init_shgrp; + } + end_shgrp = array_elm->end_shgrp; + } + else { + use_blend = true; + /* draw pending groups */ + gpencil_draw_pass_range( + fbl, stl, psl, txl, fbl->temp_fb_a, + init_shgrp, end_shgrp, is_last); + + /* draw current group in separated texture */ + init_shgrp = array_elm->init_shgrp; + end_shgrp = array_elm->end_shgrp; + + GPU_framebuffer_bind(fbl->temp_fb_fx); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_fx, clearcol, 1.0f); + gpencil_draw_pass_range( + fbl, stl, psl, txl, fbl->temp_fb_fx, + init_shgrp, end_shgrp, + is_last); + + /* Blend A texture and FX texture */ + GPU_framebuffer_bind(fbl->temp_fb_b); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_b, clearcol, 1.0f); + stl->storage->blend_mode = array_elm->mode; + stl->storage->clamp_layer = (int)array_elm->clamp_layer; + stl->storage->blend_opacity = array_elm->blend_opacity; + stl->storage->tonemapping = stl->storage->is_render ? 1 : 0; + DRW_draw_pass(psl->blend_pass); + stl->storage->tonemapping = 0; + + /* Copy B texture to A texture to follow loop */ + e_data.input_depth_tx = e_data.temp_depth_tx_b; + e_data.input_color_tx = e_data.temp_color_tx_b; + + GPU_framebuffer_bind(fbl->temp_fb_a); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_a, clearcol, 1.0f); + DRW_draw_pass(psl->mix_pass_noblend); + + /* prepare next group */ + init_shgrp = NULL; + } + + } + /* last group */ + gpencil_draw_pass_range( + fbl, stl, psl, txl, fbl->temp_fb_a, + init_shgrp, end_shgrp, + true); + } + + /* Current buffer drawing */ + if ((!is_render) && (cache_ob->is_dup_ob == false)) { + DRW_draw_pass(psl->drawing_pass); + } + /* fx passes */ + if (cache_ob->has_fx == true) { + stl->storage->tonemapping = 0; + DRW_gpencil_fx_draw(&e_data, vedata, cache_ob); + } + + e_data.input_depth_tx = e_data.temp_depth_tx_a; + e_data.input_color_tx = e_data.temp_color_tx_a; + + /* Combine with scene buffer */ + if ((!is_render) || (fbl->main == NULL)) { + GPU_framebuffer_bind(dfbl->default_fb); + } + else { + GPU_framebuffer_bind(fbl->main); + } + /* tonemapping */ + stl->storage->tonemapping = stl->storage->is_render ? 1 : 0; + + DRW_draw_pass(psl->mix_pass); + + /* prepare for fast drawing */ + if (!is_render) { + if (!playing) { + gpencil_prepare_fast_drawing(stl, dfbl, fbl, psl->mix_pass_noblend, clearcol); + } + } + else { + /* if render, the cache must be dirty for next loop */ + gpd->flag |= GP_DATA_CACHE_IS_DIRTY; + } + } + /* edit points */ + if ((!is_render) && (!playing)) { + DRW_draw_pass(psl->edit_pass); + } + } + /* grid pass */ + if ((!is_render) && (obact) && (obact->type == OB_GPENCIL)) { + if (((v3d->flag2 & V3D_RENDER_OVERRIDE) == 0) && + (v3d->gp_flag & V3D_GP_SHOW_GRID)) + { + DRW_draw_pass(psl->grid_pass); + } + } + } + /* free memory */ + gpencil_free_obj_runtime(stl); + + /* reset */ + if (DRW_state_is_fbo()) { + /* attach again default framebuffer */ + if (!is_render) { + GPU_framebuffer_bind(dfbl->default_fb); + } + + /* the temp texture is ready. Now we can use fast screen drawing */ + if (stl->g_data->session_flag & GP_DRW_PAINT_FILLING) { + stl->g_data->session_flag = GP_DRW_PAINT_READY; + } + } +} + +static const DrawEngineDataSize GPENCIL_data_size = DRW_VIEWPORT_DATA_SIZE(GPENCIL_Data); + +DrawEngineType draw_engine_gpencil_type = { + NULL, NULL, + N_("GpencilMode"), + &GPENCIL_data_size, + &GPENCIL_engine_init, + &GPENCIL_engine_free, + &GPENCIL_cache_init, + &GPENCIL_cache_populate, + &GPENCIL_cache_finish, + NULL, + &GPENCIL_draw_scene, + NULL, + NULL, + &GPENCIL_render_to_image, +}; diff --git a/source/blender/draw/engines/gpencil/gpencil_engine.h b/source/blender/draw/engines/gpencil/gpencil_engine.h new file mode 100644 index 00000000000..b8b526cb873 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_engine.h @@ -0,0 +1,441 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_engine.h + * \ingroup draw + */ + +#ifndef __GPENCIL_ENGINE_H__ +#define __GPENCIL_ENGINE_H__ + +#include "GPU_batch.h" + +struct tGPspoint; +struct bGPDstroke; +struct ModifierData; +struct GPENCIL_Data; +struct GPENCIL_StorageList; +struct Object; +struct MaterialGPencilStyle; +struct RenderEngine; +struct RenderLayer; + +#define GPENCIL_CACHE_BLOCK_SIZE 8 +#define GPENCIL_MAX_SHGROUPS 65536 +#define GPENCIL_GROUPS_BLOCK_SIZE 1024 + +/* used to expand VBOs. Size has a big impact in the speed */ +#define GPENCIL_VBO_BLOCK_SIZE 128 + +#define GPENCIL_COLOR_SOLID 0 +#define GPENCIL_COLOR_TEXTURE 1 +#define GPENCIL_COLOR_PATTERN 2 + +#define GP_SIMPLIFY(scene) ((scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_ENABLE)) +#define GP_SIMPLIFY_ONPLAY(playing) (((playing == true) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_ON_PLAY)) || ((scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_ON_PLAY) == 0)) +#define GP_SIMPLIFY_FILL(scene, playing) ((GP_SIMPLIFY_ONPLAY(playing) && (GP_SIMPLIFY(scene)) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_FILL))) +#define GP_SIMPLIFY_MODIF(scene, playing) ((GP_SIMPLIFY_ONPLAY(playing) && (GP_SIMPLIFY(scene)) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_MODIFIER))) +#define GP_SIMPLIFY_FX(scene, playing) ((GP_SIMPLIFY_ONPLAY(playing) && (GP_SIMPLIFY(scene)) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_FX))) +#define GP_SIMPLIFY_BLEND(scene, playing) ((GP_SIMPLIFY_ONPLAY(playing) && (GP_SIMPLIFY(scene)) && (scene->r.simplify_gpencil & SIMPLIFY_GPENCIL_BLEND))) + +#define GP_IS_CAMERAVIEW ((rv3d != NULL) && (rv3d->persp == RV3D_CAMOB && v3d->camera)) + + /* *********** OBJECTS CACHE *********** */ +typedef struct tGPencilObjectCache_shgrp { + int mode; + bool clamp_layer; + float blend_opacity; + DRWShadingGroup *init_shgrp; + DRWShadingGroup *end_shgrp; +} tGPencilObjectCache_shgrp; + + /* used to save gpencil object data for drawing */ +typedef struct tGPencilObjectCache { + struct Object *ob; + struct bGPdata *gpd; + int idx; /*original index, can change after sort */ + + /* effects */ + bool has_fx; + ListBase shader_fx; + float pixfactor; + DRWShadingGroup *fx_wave_sh; + DRWShadingGroup *fx_blur_sh; + DRWShadingGroup *fx_colorize_sh; + DRWShadingGroup *fx_pixel_sh; + DRWShadingGroup *fx_rim_sh; + DRWShadingGroup *fx_shadow_sh; + DRWShadingGroup *fx_glow_sh; + DRWShadingGroup *fx_swirl_sh; + DRWShadingGroup *fx_flip_sh; + DRWShadingGroup *fx_light_sh; + + float loc[3]; + float obmat[4][4]; + float zdepth; /* z-depth value to sort gp object */ + bool is_dup_ob; /* flag to tag duplicate objects */ + + /* GPU data size */ + int tot_vertex; + int tot_triangles; + + /* Save shader groups by layer */ + int tot_layers; + tGPencilObjectCache_shgrp *shgrp_array; + +} tGPencilObjectCache; + + /* *********** LISTS *********** */ +typedef struct GPENCIL_shgroup { + int s_clamp; + int stroke_style; + int color_type; + int mode; + int texture_mix; + int texture_flip; + int texture_clamp; + int fill_style; + int keep_size; + float obj_scale; +} GPENCIL_shgroup; + +typedef struct GPENCIL_Storage { + int shgroup_id; /* total elements */ + float unit_matrix[4][4]; + int stroke_style; + int color_type; + int mode; + int xray; + int keep_size; + float obj_scale; + float pixfactor; + bool is_playing; + bool is_render; + bool is_mat_preview; + bool reset_cache; + bool buffer_stroke; + bool buffer_fill; + const float *pixsize; + float render_pixsize; + int tonemapping; + short multisamples; + + int blend_mode; + int clamp_layer; + float blend_opacity; + + /* simplify settings*/ + bool simplify_fill; + bool simplify_modif; + bool simplify_fx; + bool simplify_blend; + + /* Render Matrices and data */ + float persmat[4][4], persinv[4][4]; + float viewmat[4][4], viewinv[4][4]; + float winmat[4][4], wininv[4][4]; + float view_vecs[2][4]; /* vec4[2] */ + + float grid_matrix[4][4]; + + Object *camera; /* camera pointer for render mode */ +} GPENCIL_Storage; + +typedef struct GPENCIL_StorageList { + struct GPENCIL_Storage *storage; + struct g_data *g_data; + struct GPENCIL_shgroup *shgroups; +} GPENCIL_StorageList; + +typedef struct GPENCIL_PassList { + struct DRWPass *stroke_pass; + struct DRWPass *edit_pass; + struct DRWPass *drawing_pass; + struct DRWPass *mix_pass; + struct DRWPass *mix_pass_noblend; + struct DRWPass *background_pass; + struct DRWPass *paper_pass; + struct DRWPass *grid_pass; + struct DRWPass *blend_pass; + + /* effects */ + struct DRWPass *fx_shader_pass; + struct DRWPass *fx_shader_pass_blend; + +} GPENCIL_PassList; + +typedef struct GPENCIL_FramebufferList { + struct GPUFrameBuffer *main; + struct GPUFrameBuffer *temp_fb_a; + struct GPUFrameBuffer *temp_fb_b; + struct GPUFrameBuffer *temp_fb_fx; + struct GPUFrameBuffer *background_fb; + + struct GPUFrameBuffer *multisample_fb; +} GPENCIL_FramebufferList; + +typedef struct GPENCIL_TextureList { + struct GPUTexture *texture; + + /* multisample textures */ + struct GPUTexture *multisample_color; + struct GPUTexture *multisample_depth; + +} GPENCIL_TextureList; + +typedef struct GPENCIL_Data { + void *engine_type; /* Required */ + struct GPENCIL_FramebufferList *fbl; + struct GPENCIL_TextureList *txl; + struct GPENCIL_PassList *psl; + struct GPENCIL_StorageList *stl; + + /* render textures */ + struct GPUTexture *render_depth_tx; + struct GPUTexture *render_color_tx; + +} GPENCIL_Data; + +/* *********** STATIC *********** */ +typedef struct g_data { + struct DRWShadingGroup *shgrps_edit_point; + struct DRWShadingGroup *shgrps_edit_line; + struct DRWShadingGroup *shgrps_drawing_stroke; + struct DRWShadingGroup *shgrps_drawing_fill; + struct DRWShadingGroup *shgrps_grid; + + int gp_cache_used; /* total objects in cache */ + int gp_cache_size; /* size of the cache */ + struct tGPencilObjectCache *gp_object_cache; + + int session_flag; + +} g_data; /* Transient data */ + +/* flags for fast drawing support */ +typedef enum eGPsession_Flag { + GP_DRW_PAINT_HOLD = (1 << 0), + GP_DRW_PAINT_IDLE = (1 << 1), + GP_DRW_PAINT_FILLING = (1 << 2), + GP_DRW_PAINT_READY = (1 << 3), + GP_DRW_PAINT_PAINTING = (1 << 4), +} eGPsession_Flag; + +typedef struct GPENCIL_e_data { + /* general drawing shaders */ + struct GPUShader *gpencil_fill_sh; + struct GPUShader *gpencil_stroke_sh; + struct GPUShader *gpencil_point_sh; + struct GPUShader *gpencil_edit_point_sh; + struct GPUShader *gpencil_line_sh; + struct GPUShader *gpencil_drawing_fill_sh; + struct GPUShader *gpencil_fullscreen_sh; + struct GPUShader *gpencil_simple_fullscreen_sh; + struct GPUShader *gpencil_blend_fullscreen_sh; + struct GPUShader *gpencil_background_sh; + struct GPUShader *gpencil_paper_sh; + + /* effects */ + struct GPUShader *gpencil_fx_blur_sh; + struct GPUShader *gpencil_fx_colorize_sh; + struct GPUShader *gpencil_fx_flip_sh; + struct GPUShader *gpencil_fx_glow_prepare_sh; + struct GPUShader *gpencil_fx_glow_resolve_sh; + struct GPUShader *gpencil_fx_light_sh; + struct GPUShader *gpencil_fx_pixel_sh; + struct GPUShader *gpencil_fx_rim_prepare_sh; + struct GPUShader *gpencil_fx_rim_resolve_sh; + struct GPUShader *gpencil_fx_shadow_prepare_sh; + struct GPUShader *gpencil_fx_shadow_resolve_sh; + struct GPUShader *gpencil_fx_swirl_sh; + struct GPUShader *gpencil_fx_wave_sh; + + /* textures */ + struct GPUTexture *background_depth_tx; + struct GPUTexture *background_color_tx; + + struct GPUTexture *gpencil_blank_texture; + + /* runtime pointers texture */ + struct GPUTexture *input_depth_tx; + struct GPUTexture *input_color_tx; + + /* working textures */ + struct GPUTexture *temp_color_tx_a; + struct GPUTexture *temp_depth_tx_a; + + struct GPUTexture *temp_color_tx_b; + struct GPUTexture *temp_depth_tx_b; + + struct GPUTexture *temp_color_tx_fx; + struct GPUTexture *temp_depth_tx_fx; + + /* for buffer only one batch is nedeed because the drawing is only of one stroke */ + GPUBatch *batch_buffer_stroke; + GPUBatch *batch_buffer_fill; + + /* grid geometry */ + GPUBatch *batch_grid; + +} GPENCIL_e_data; /* Engine data */ + +/* GPUBatch Cache */ +typedef struct GpencilBatchCacheElem { + GPUBatch *batch; + GPUVertBuf *vbo; + int vbo_len; + /* attr ids */ + GPUVertFormat format; + uint pos_id; + uint color_id; + uint thickness_id; + uint uvdata_id; + + /* size for VBO alloc */ + int tot_vertex; +} GpencilBatchCacheElem; + +typedef struct GpencilBatchGroup { + bGPDlayer *gpl; /* reference to original layer */ + bGPDframe *gpf; /* reference to original frame */ + bGPDstroke *gps; /* reference to original stroke */ + short type; /* type of element */ + bool onion; /* the group is part of onion skin */ + int vertex_idx; /* index of vertex data */ +} GpencilBatchGroup; + +typedef enum GpencilBatchGroup_Type { + eGpencilBatchGroupType_Stroke = 1, + eGpencilBatchGroupType_Point = 2, + eGpencilBatchGroupType_Fill = 3, + eGpencilBatchGroupType_Edit = 4, + eGpencilBatchGroupType_Edlin = 5, +} GpencilBatchGroup_Type; + +typedef struct GpencilBatchCache { + GpencilBatchCacheElem b_stroke; + GpencilBatchCacheElem b_point; + GpencilBatchCacheElem b_fill; + GpencilBatchCacheElem b_edit; + GpencilBatchCacheElem b_edlin; + + /* settings to determine if cache is invalid */ + bool is_dirty; + bool is_editmode; + int cache_frame; + + /* data with the shading groups */ + int grp_used; /* total groups in arrays */ + int grp_size; /* max size of the array */ + struct GpencilBatchGroup *grp_cache; /* array of elements */ + + int tot_layers; + struct bGPDframe *derived_array; /* runtime data created by modifiers */ +} GpencilBatchCache; + +/* general drawing functions */ +struct DRWShadingGroup *DRW_gpencil_shgroup_stroke_create( + struct GPENCIL_e_data *e_data, struct GPENCIL_Data *vedata, struct DRWPass *pass, struct GPUShader *shader, + struct Object *ob, struct bGPdata *gpd, struct MaterialGPencilStyle *gp_style, int id, bool onion); +void DRW_gpencil_populate_datablock( + struct GPENCIL_e_data *e_data, void *vedata, + struct Object *ob, struct tGPencilObjectCache *cache_ob); +void DRW_gpencil_populate_buffer_strokes( + struct GPENCIL_e_data *e_data, void *vedata, struct ToolSettings *ts, struct Object *ob); +void DRW_gpencil_populate_multiedit( + struct GPENCIL_e_data *e_data, void *vedata, + struct Object *ob, struct tGPencilObjectCache *cache_ob); +void DRW_gpencil_triangulate_stroke_fill(struct Object *ob, struct bGPDstroke *gps); +void DRW_gpencil_populate_particles(struct GPENCIL_e_data *e_data, void *vedata); + +void DRW_gpencil_multisample_ensure(struct GPENCIL_Data *vedata, int rect_w, int rect_h); + +/* create geometry functions */ +void DRW_gpencil_get_point_geom(struct GpencilBatchCacheElem *be, struct bGPDstroke *gps, short thickness, const float ink[4]); +void DRW_gpencil_get_stroke_geom(struct GpencilBatchCacheElem *be, struct bGPDstroke *gps, short thickness, const float ink[4]); +void DRW_gpencil_get_fill_geom(struct GpencilBatchCacheElem *be, struct Object *ob, struct bGPDstroke *gps, const float color[4]); +void DRW_gpencil_get_edit_geom(struct GpencilBatchCacheElem *be, struct bGPDstroke *gps, float alpha, short dflag); +void DRW_gpencil_get_edlin_geom(struct GpencilBatchCacheElem *be, struct bGPDstroke *gps, float alpha, short dflag); + +struct GPUBatch *DRW_gpencil_get_buffer_stroke_geom(struct bGPdata *gpd, short thickness); +struct GPUBatch *DRW_gpencil_get_buffer_fill_geom(struct bGPdata *gpd); +struct GPUBatch *DRW_gpencil_get_buffer_point_geom(struct bGPdata *gpd, short thickness); +struct GPUBatch *DRW_gpencil_get_grid(Object *ob); + +/* object cache functions */ +struct tGPencilObjectCache *gpencil_object_cache_add( + struct tGPencilObjectCache *cache_array, struct Object *ob, + int *gp_cache_size, int *gp_cache_used); + +/* shading groups cache functions */ +struct GpencilBatchGroup *gpencil_group_cache_add( + struct GpencilBatchGroup *cache_array, + struct bGPDlayer *gpl, struct bGPDframe *gpf, struct bGPDstroke *gps, + const short type, const bool onion, + const int vertex_idx, + int *grp_size, int *grp_used); + +/* geometry batch cache functions */ +struct GpencilBatchCache *gpencil_batch_cache_get(struct Object *ob, int cfra); + +/* effects */ +void GPENCIL_create_fx_shaders(struct GPENCIL_e_data *e_data); +void GPENCIL_delete_fx_shaders(struct GPENCIL_e_data *e_data); +void GPENCIL_create_fx_passes(struct GPENCIL_PassList *psl); + +void DRW_gpencil_fx_prepare( + struct GPENCIL_e_data *e_data, struct GPENCIL_Data *vedata, + struct tGPencilObjectCache *cache); +void DRW_gpencil_fx_draw( + struct GPENCIL_e_data *e_data, struct GPENCIL_Data *vedata, + struct tGPencilObjectCache *cache); + +/* main functions */ +void GPENCIL_engine_init(void *vedata); +void GPENCIL_cache_init(void *vedata); +void GPENCIL_cache_populate(void *vedata, struct Object *ob); +void GPENCIL_cache_finish(void *vedata); +void GPENCIL_draw_scene(void *vedata); + +/* render */ +void GPENCIL_render_init(struct GPENCIL_Data *ved, struct RenderEngine *engine, struct Depsgraph *depsgraph); +void GPENCIL_render_to_image(void *vedata, struct RenderEngine *engine, struct RenderLayer *render_layer, const rcti *rect); + +/* Use of multisample framebuffers. */ +#define MULTISAMPLE_GP_SYNC_ENABLE(lvl, fbl) { \ + if ((lvl > 0) && (fbl->multisample_fb != NULL)) { \ + DRW_stats_query_start("GP Multisample Blit"); \ + GPU_framebuffer_bind(fbl->multisample_fb); \ + GPU_framebuffer_clear_color_depth(fbl->multisample_fb, (const float[4]){0.0f}, 1.0f); \ + DRW_stats_query_end(); \ + } \ +} + +#define MULTISAMPLE_GP_SYNC_DISABLE(lvl, fbl, fb, txl) { \ + if ((lvl > 0) && (fbl->multisample_fb != NULL)) { \ + DRW_stats_query_start("GP Multisample Resolve"); \ + GPU_framebuffer_bind(fb); \ + DRW_multisamples_resolve(txl->multisample_depth, txl->multisample_color, true); \ + DRW_stats_query_end(); \ + } \ +} + +#endif /* __GPENCIL_ENGINE_H__ */ diff --git a/source/blender/draw/engines/gpencil/gpencil_render.c b/source/blender/draw/engines/gpencil/gpencil_render.c new file mode 100644 index 00000000000..8dc15472a20 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_render.c @@ -0,0 +1,356 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_render.c + * \ingroup draw + */ +#include "BLI_rect.h" + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "BKE_camera.h" + +#include "DNA_gpencil_types.h" + +#include "DEG_depsgraph_query.h" + +#include "draw_mode_engines.h" + +#include "RE_pipeline.h" + +#include "gpencil_engine.h" + +/* Get pixel size for render + * This function uses the same calculation used for viewport, because if use + * camera pixelsize, the result is not correct. + */ +static float get_render_pixelsize(float persmat[4][4], int winx, int winy) +{ + float v1[3], v2[3]; + float len_px, len_sc; + + v1[0] = persmat[0][0]; + v1[1] = persmat[1][0]; + v1[2] = persmat[2][0]; + + v2[0] = persmat[0][1]; + v2[1] = persmat[1][1]; + v2[2] = persmat[2][1]; + + len_px = 2.0f / sqrtf(min_ff(len_squared_v3(v1), len_squared_v3(v2))); + len_sc = (float)MAX2(winx, winy); + + return len_px / len_sc; +} + +/* init render data */ +void GPENCIL_render_init(GPENCIL_Data *ved, RenderEngine *engine, struct Depsgraph *depsgraph) +{ + GPENCIL_Data *vedata = (GPENCIL_Data *)ved; + GPENCIL_StorageList *stl = vedata->stl; + GPENCIL_FramebufferList *fbl = vedata->fbl; + + Scene *scene = DEG_get_evaluated_scene(depsgraph); + const float *viewport_size = DRW_viewport_size_get(); + const int size[2] = { (int)viewport_size[0], (int)viewport_size[1] }; + + /* In render mode the default framebuffer is not generated + * because there is no viewport. So we need to manually create one + * NOTE : use 32 bit format for precision in render mode. + */ + /* create multiframe framebuffer for AA */ + if (U.gpencil_multisamples > 0) { + int rect_w = (int)viewport_size[0]; + int rect_h = (int)viewport_size[1]; + DRW_gpencil_multisample_ensure(vedata, rect_w, rect_h); + } + + vedata->render_depth_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_DEPTH24_STENCIL8, + &draw_engine_gpencil_type); + vedata->render_color_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_RGBA32F, + &draw_engine_gpencil_type); + GPU_framebuffer_ensure_config( + &fbl->main, { + GPU_ATTACHMENT_TEXTURE(vedata->render_depth_tx), + GPU_ATTACHMENT_TEXTURE(vedata->render_color_tx) + }); + + /* Alloc transient data. */ + if (!stl->g_data) { + stl->g_data = MEM_callocN(sizeof(*stl->g_data), __func__); + } + + /* Set the pers & view matrix. */ + struct Object *camera = DEG_get_evaluated_object(depsgraph, RE_GetCamera(engine->re)); + float frame = BKE_scene_frame_get(scene); + RE_GetCameraWindow(engine->re, camera, frame, stl->storage->winmat); + RE_GetCameraModelMatrix(engine->re, camera, stl->storage->viewinv); + + invert_m4_m4(stl->storage->viewmat, stl->storage->viewinv); + mul_m4_m4m4(stl->storage->persmat, stl->storage->winmat, stl->storage->viewmat); + invert_m4_m4(stl->storage->persinv, stl->storage->persmat); + invert_m4_m4(stl->storage->wininv, stl->storage->winmat); + + DRW_viewport_matrix_override_set(stl->storage->persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(stl->storage->persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(stl->storage->winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(stl->storage->wininv, DRW_MAT_WININV); + DRW_viewport_matrix_override_set(stl->storage->viewmat, DRW_MAT_VIEW); + DRW_viewport_matrix_override_set(stl->storage->viewinv, DRW_MAT_VIEWINV); + + /* calculate pixel size for render */ + stl->storage->render_pixsize = get_render_pixelsize(stl->storage->persmat, viewport_size[0], viewport_size[1]); + /* INIT CACHE */ + GPENCIL_cache_init(vedata); +} + +/* render all objects and select only grease pencil */ +static void GPENCIL_render_cache( + void *vedata, struct Object *ob, + struct RenderEngine *UNUSED(engine), struct Depsgraph *UNUSED(depsgraph)) +{ + if ((ob == NULL) || (DRW_object_is_visible_in_active_context(ob) == false)) { + return; + } + + if (ob->type == OB_GPENCIL) { + GPENCIL_cache_populate(vedata, ob); + } +} + +/* TODO: Reuse Eevee code in shared module instead to duplicate here */ +static void GPENCIL_render_update_viewvecs(float invproj[4][4], float winmat[4][4], float(*r_viewvecs)[4]) +{ + /* view vectors for the corners of the view frustum. + * Can be used to recreate the world space position easily */ + float view_vecs[4][4] = { + {-1.0f, -1.0f, -1.0f, 1.0f}, + {1.0f, -1.0f, -1.0f, 1.0f}, + {-1.0f, 1.0f, -1.0f, 1.0f}, + {-1.0f, -1.0f, 1.0f, 1.0f} + }; + + /* convert the view vectors to view space */ + const bool is_persp = (winmat[3][3] == 0.0f); + for (int i = 0; i < 4; i++) { + mul_project_m4_v3(invproj, view_vecs[i]); + /* normalized trick see: + * http://www.derschmale.com/2014/01/26/reconstructing-positions-from-the-depth-buffer */ + if (is_persp) { + /* Divide XY by Z. */ + mul_v2_fl(view_vecs[i], 1.0f / view_vecs[i][2]); + } + } + + /** + * If ortho : view_vecs[0] is the near-bottom-left corner of the frustum and + * view_vecs[1] is the vector going from the near-bottom-left corner to + * the far-top-right corner. + * If Persp : view_vecs[0].xy and view_vecs[1].xy are respectively the bottom-left corner + * when Z = 1, and top-left corner if Z = 1. + * view_vecs[0].z the near clip distance and view_vecs[1].z is the (signed) + * distance from the near plane to the far clip plane. + */ + copy_v4_v4(r_viewvecs[0], view_vecs[0]); + + /* we need to store the differences */ + r_viewvecs[1][0] = view_vecs[1][0] - view_vecs[0][0]; + r_viewvecs[1][1] = view_vecs[2][1] - view_vecs[0][1]; + r_viewvecs[1][2] = view_vecs[3][2] - view_vecs[0][2]; +} + +/* Update view_vecs */ +static void GPENCIL_render_update_vecs(GPENCIL_Data *vedata) +{ + GPENCIL_StorageList *stl = vedata->stl; + + float invproj[4][4], winmat[4][4]; + DRW_viewport_matrix_get(winmat, DRW_MAT_WIN); + DRW_viewport_matrix_get(invproj, DRW_MAT_WININV); + + /* this is separated to keep function equal to Eevee for future reuse of same code */ + GPENCIL_render_update_viewvecs(invproj, winmat, stl->storage->view_vecs); +} + +/* read z-depth render result */ +static void GPENCIL_render_result_z(struct RenderLayer *rl, const char *viewname, GPENCIL_Data *vedata, const rcti *rect) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + ViewLayer *view_layer = draw_ctx->view_layer; + GPENCIL_StorageList *stl = vedata->stl; + + if ((view_layer->passflag & SCE_PASS_Z) != 0) { + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_Z, viewname); + + GPU_framebuffer_read_depth(vedata->fbl->main, rect->xmin, rect->ymin, BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), rp->rect); + + bool is_persp = DRW_viewport_is_persp_get(); + + GPENCIL_render_update_vecs(vedata); + + /* Convert ogl depth [0..1] to view Z [near..far] */ + for (int i = 0; i < BLI_rcti_size_x(rect) * BLI_rcti_size_y(rect); i++) { + if (rp->rect[i] == 1.0f) { + rp->rect[i] = 1e10f; /* Background */ + } + else { + if (is_persp) { + rp->rect[i] = rp->rect[i] * 2.0f - 1.0f; + rp->rect[i] = stl->storage->winmat[3][2] / (rp->rect[i] + stl->storage->winmat[2][2]); + } + else { + rp->rect[i] = -stl->storage->view_vecs[0][2] + rp->rect[i] * -stl->storage->view_vecs[1][2]; + } + } + } + } +} + +/* read combined render result */ +static void GPENCIL_render_result_combined(struct RenderLayer *rl, const char *viewname, GPENCIL_Data *vedata, const rcti *rect) +{ + RenderPass *rp = RE_pass_find_by_name(rl, RE_PASSNAME_COMBINED, viewname); + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + + GPU_framebuffer_bind(fbl->main); + GPU_framebuffer_read_color(vedata->fbl->main, rect->xmin, rect->ymin, BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), 4, 0, rp->rect); +} + +/* helper to blend pixels */ +static void blend_pixel(float src[4], float dst[4]) +{ + float alpha = src[3]; + + /* use blend: GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA */ + dst[0] = (src[0] * alpha) + (dst[0] * (1.0f - alpha)); + dst[1] = (src[1] * alpha) + (dst[1] * (1.0f - alpha)); + dst[2] = (src[2] * alpha) + (dst[2] * (1.0f - alpha)); +} + +/* render grease pencil to image */ +void GPENCIL_render_to_image(void *vedata, RenderEngine *engine, struct RenderLayer *render_layer, const rcti *rect) +{ + const char *viewname = RE_GetActiveRenderView(engine->re); + const DRWContextState *draw_ctx = DRW_context_state_get(); + int imgsize = BLI_rcti_size_x(rect) * BLI_rcti_size_y(rect); + + /* save previous render data */ + RenderPass *rpass_color_src = RE_pass_find_by_name(render_layer, RE_PASSNAME_COMBINED, viewname); + RenderPass *rpass_depth_src = RE_pass_find_by_name(render_layer, RE_PASSNAME_Z, viewname); + float *src_rect_color_data = NULL; + float *src_rect_depth_data = NULL; + if ((rpass_color_src) && (rpass_depth_src) && (rpass_color_src->rect) && (rpass_depth_src->rect)) { + src_rect_color_data = MEM_dupallocN(rpass_color_src->rect); + src_rect_depth_data = MEM_dupallocN(rpass_depth_src->rect); + } + else { + /* TODO: put this message in a better place */ + printf("Warning: To render grease pencil, enable Combined and Z passes.\n"); + } + + GPENCIL_engine_init(vedata); + GPENCIL_render_init(vedata, engine, draw_ctx->depsgraph); + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + Object *camera = DEG_get_evaluated_object(draw_ctx->depsgraph, RE_GetCamera(engine->re)); + stl->storage->camera = camera; /* save current camera */ + + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + if (fbl->main) { + GPU_framebuffer_texture_attach(fbl->main, ((GPENCIL_Data *)vedata)->render_depth_tx, 0, 0); + GPU_framebuffer_texture_attach(fbl->main, ((GPENCIL_Data *)vedata)->render_color_tx, 0, 0); + /* clean first time the buffer */ + float clearcol[4] = { 0.0f, 0.0f, 0.0f, 0.0f }; + GPU_framebuffer_bind(fbl->main); + GPU_framebuffer_clear_color_depth(fbl->main, clearcol, 1.0f); + } + + /* loop all objects and draw */ + DRW_render_object_iter(vedata, engine, draw_ctx->depsgraph, GPENCIL_render_cache); + + GPENCIL_cache_finish(vedata); + GPENCIL_draw_scene(vedata); + + /* combined data */ + GPENCIL_render_result_combined(render_layer, viewname, vedata, rect); + /* z-depth data */ + GPENCIL_render_result_z(render_layer, viewname, vedata, rect); + + /* detach textures */ + if (fbl->main) { + GPU_framebuffer_texture_detach(fbl->main, ((GPENCIL_Data *)vedata)->render_depth_tx); + GPU_framebuffer_texture_detach(fbl->main, ((GPENCIL_Data *)vedata)->render_color_tx); + } + + /* merge previous render image with new GP image */ + if (src_rect_color_data) { + RenderPass *rpass_color_gp = RE_pass_find_by_name(render_layer, RE_PASSNAME_COMBINED, viewname); + RenderPass *rpass_depth_gp = RE_pass_find_by_name(render_layer, RE_PASSNAME_Z, viewname); + float *gp_rect_color_data = rpass_color_gp->rect; + float *gp_rect_depth_data = rpass_depth_gp->rect; + float *gp_pixel_rgba; + float *gp_pixel_depth; + float *src_pixel_rgba; + float *src_pixel_depth; + float tmp[4]; + + for (int i = 0; i < imgsize; i++) { + gp_pixel_rgba = &gp_rect_color_data[i * 4]; + gp_pixel_depth = &gp_rect_depth_data[i]; + + src_pixel_rgba = &src_rect_color_data[i * 4]; + src_pixel_depth = &src_rect_depth_data[i]; + + /* check grease pencil render transparency */ + if (gp_pixel_rgba[3] > 0.0f) { + copy_v4_v4(tmp, gp_pixel_rgba); + if (src_pixel_rgba[3] > 0.0f) { + /* copy source color on back */ + copy_v4_v4(gp_pixel_rgba, src_pixel_rgba); + /* check z-depth */ + if (gp_pixel_depth[0] > src_pixel_depth[0]) { + /* copy source z-depth */ + gp_pixel_depth[0] = src_pixel_depth[0]; + /* blend gp render */ + blend_pixel(tmp, gp_pixel_rgba); + /* blend object on top */ + blend_pixel(src_pixel_rgba, gp_pixel_rgba); + } + else { + /* blend gp render */ + blend_pixel(tmp, gp_pixel_rgba); + } + } + } + else { + copy_v4_v4(gp_pixel_rgba, src_pixel_rgba); + gp_pixel_depth[0] = src_pixel_depth[0]; + } + } + + /* free memory */ + MEM_SAFE_FREE(src_rect_color_data); + MEM_SAFE_FREE(src_rect_depth_data); + } +} diff --git a/source/blender/draw/engines/gpencil/gpencil_shader_fx.c b/source/blender/draw/engines/gpencil/gpencil_shader_fx.c new file mode 100644 index 00000000000..fcadf296253 --- /dev/null +++ b/source/blender/draw/engines/gpencil/gpencil_shader_fx.c @@ -0,0 +1,1129 @@ +/* + * Copyright 2017, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Antonio Vazquez + * + */ + +/** \file blender/draw/engines/gpencil/gpencil_shader_fx.c + * \ingroup draw + */ +#include "DNA_gpencil_types.h" +#include "DNA_shader_fx_types.h" +#include "DNA_screen_types.h" +#include "DNA_view3d_types.h" +#include "DNA_camera_types.h" + +#include "BKE_gpencil.h" +#include "BKE_shader_fx.h" + +#include "DRW_engine.h" +#include "DRW_render.h" + +#include "BKE_camera.h" + +#include "ED_view3d.h" +#include "ED_gpencil.h" + +#include "gpencil_engine.h" + +extern char datatoc_gpencil_fx_blur_frag_glsl[]; +extern char datatoc_gpencil_fx_colorize_frag_glsl[]; +extern char datatoc_gpencil_fx_flip_frag_glsl[]; +extern char datatoc_gpencil_fx_light_frag_glsl[]; +extern char datatoc_gpencil_fx_pixel_frag_glsl[]; +extern char datatoc_gpencil_fx_rim_prepare_frag_glsl[]; +extern char datatoc_gpencil_fx_rim_resolve_frag_glsl[]; +extern char datatoc_gpencil_fx_shadow_prepare_frag_glsl[]; +extern char datatoc_gpencil_fx_shadow_resolve_frag_glsl[]; +extern char datatoc_gpencil_fx_glow_prepare_frag_glsl[]; +extern char datatoc_gpencil_fx_glow_resolve_frag_glsl[]; +extern char datatoc_gpencil_fx_swirl_frag_glsl[]; +extern char datatoc_gpencil_fx_wave_frag_glsl[]; + +/* verify if this fx is active */ +static bool effect_is_active(bGPdata *gpd, ShaderFxData *fx, bool is_render) +{ + if (fx == NULL) { + return false; + } + + if (gpd == NULL) { + return false; + } + + bool is_edit = GPENCIL_ANY_EDIT_MODE(gpd); + if (((fx->mode & eShaderFxMode_Editmode) == 0) && (is_edit)) { + return false; + } + + if (((fx->mode & eShaderFxMode_Realtime) && (is_render == false)) || + ((fx->mode & eShaderFxMode_Render) && (is_render == true))) + { + return true; + } + + return false; +} + +/** + * Get normal of draw using one stroke of visible layer + * \param gpd GP datablock + * \param r_point Point on plane + * \param r_normal Normal vector + */ +static bool get_normal_vector(bGPdata *gpd, float r_point[3], float r_normal[3]) +{ + for (bGPDlayer *gpl = gpd->layers.first; gpl; gpl = gpl->next) { + if (gpl->flag & GP_LAYER_HIDE) + continue; + + /* get frame */ + bGPDframe *gpf = gpl->actframe; + if (gpf == NULL) + continue; + for (bGPDstroke *gps = gpf->strokes.first; gps; gps = gps->next) { + if (gps->totpoints >= 3) { + bGPDspoint *pt = &gps->points[0]; + BKE_gpencil_stroke_normal(gps, r_normal); + /* in some weird situations, the normal cannot be calculated, so try next stroke */ + if ((r_normal[0] != 0.0f) || (r_normal[1] != 0.0f) || (r_normal[2] != 0.0f)) { + copy_v3_v3(r_point, &pt->x); + return true; + } + } + } + } + + return false; +} + +/* helper to get near and far depth of field values */ +static void GPENCIL_dof_nearfar(Object *camera, float coc, float nearfar[2]) +{ + if (camera == NULL) { + return; + } + + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + Camera *cam = (Camera *)camera->data; + + float fstop = cam->gpu_dof.fstop; + float focus_dist = BKE_camera_object_dof_distance(camera); + float focal_len = cam->lens; + + /* this is factor that converts to the scene scale. focal length and sensor are expressed in mm + * unit.scale_length is how many meters per blender unit we have. We want to convert to blender units though + * because the shader reads coordinates in world space, which is in blender units. + * Note however that focus_distance is already in blender units and shall not be scaled here (see T48157). */ + float scale = (scene->unit.system) ? scene->unit.scale_length : 1.0f; + float scale_camera = 0.001f / scale; + /* we want radius here for the aperture number */ + float aperture_scaled = 0.5f * scale_camera * focal_len / fstop; + float focal_len_scaled = scale_camera * focal_len; + + float hyperfocal = (focal_len_scaled * focal_len_scaled) / (aperture_scaled * coc); + nearfar[0] = (hyperfocal * focus_dist) / (hyperfocal + focal_len); + nearfar[1] = (hyperfocal * focus_dist) / (hyperfocal - focal_len); +} + +/* **************** Shader Effects ***************************** */ + +/* Gaussian Blur FX + * The effect is done using two shading groups because is faster to apply horizontal + * and vertical in different operations. + */ +static void DRW_gpencil_fx_blur( + ShaderFxData *fx, int ob_idx, GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + + BlurShaderFxData *fxd = (BlurShaderFxData *)fx; + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + View3D *v3d = draw_ctx->v3d; + RegionView3D *rv3d = draw_ctx->rv3d; + DRWShadingGroup *fx_shgrp; + + fxd->blur[0] = fxd->radius[0]; + fxd->blur[1] = fxd->radius[1]; + + /* init weight */ + if (fxd->flag & FX_BLUR_DOF_MODE) { + /* viewport and opengl render */ + Object *camera = NULL; + if (rv3d) { + if (rv3d->persp == RV3D_CAMOB) { + camera = v3d->camera; + } + } + else { + camera = stl->storage->camera; + } + + if (camera) { + float nearfar[2]; + GPENCIL_dof_nearfar(camera, fxd->coc, nearfar); + float zdepth = stl->g_data->gp_object_cache[ob_idx].zdepth; + /* the object is on focus area */ + if ((zdepth >= nearfar[0]) && (zdepth <= nearfar[1])) { + fxd->blur[0] = 0; + fxd->blur[1] = 0; + } + else { + float f; + if (zdepth < nearfar[0]) { + f = nearfar[0] - zdepth; + } + else { + f = zdepth - nearfar[1]; + } + fxd->blur[0] = f; + fxd->blur[1] = f; + CLAMP2(&fxd->blur[0], 0, fxd->radius[0]); + } + } + else { + /* if not camera view, the blur is disabled */ + fxd->blur[0] = 0; + fxd->blur[1] = 0; + } + } + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_blur_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + DRW_shgroup_uniform_int(fx_shgrp, "blur", &fxd->blur[0], 2); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* Colorize FX */ +static void DRW_gpencil_fx_colorize( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata) +{ + if (fx == NULL) { + return; + } + ColorizeShaderFxData *fxd = (ColorizeShaderFxData *)fx; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + fx_shgrp = DRW_shgroup_create(e_data->gpencil_fx_colorize_sh, psl->fx_shader_pass); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_vec4(fx_shgrp, "low_color", &fxd->low_color[0], 1); + DRW_shgroup_uniform_vec4(fx_shgrp, "high_color", &fxd->high_color[0], 1); + DRW_shgroup_uniform_int(fx_shgrp, "mode", &fxd->mode, 1); + DRW_shgroup_uniform_float(fx_shgrp, "factor", &fxd->factor, 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* Flip FX */ +static void DRW_gpencil_fx_flip( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata) +{ + if (fx == NULL) { + return; + } + FlipShaderFxData *fxd = (FlipShaderFxData *)fx; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + fxd->flipmode = 100; + /* the number works as bit flag */ + if (fxd->flag & FX_FLIP_HORIZONTAL) { + fxd->flipmode += 10; + } + if (fxd->flag & FX_FLIP_VERTICAL) { + fxd->flipmode += 1; + } + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + fx_shgrp = DRW_shgroup_create(e_data->gpencil_fx_flip_sh, psl->fx_shader_pass); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_int(fx_shgrp, "flipmode", &fxd->flipmode, 1); + + DRW_shgroup_uniform_vec2(fx_shgrp, "wsize", DRW_viewport_size_get(), 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* Light FX */ +static void DRW_gpencil_fx_light( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + LightShaderFxData *fxd = (LightShaderFxData *)fx; + + if (fxd->object == NULL) { + return; + } + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + fx_shgrp = DRW_shgroup_create(e_data->gpencil_fx_light_sh, psl->fx_shader_pass); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + + /* location of the light using obj location as origin */ + copy_v3_v3(fxd->loc, &fxd->object->loc[0]); + + /* Calc distance to strokes plane + * The w component of location is used to transfer the distance to drawing plane + */ + float r_point[3], r_normal[3]; + float r_plane[4]; + bGPdata *gpd = cache->gpd; + if (!get_normal_vector(gpd, r_point, r_normal)) { + return; + } + mul_mat3_m4_v3(cache->obmat, r_normal); /* only rotation component */ + plane_from_point_normal_v3(r_plane, r_point, r_normal); + float dt = dist_to_plane_v3(fxd->object->loc, r_plane); + fxd->loc[3] = dt; /* use last element to save it */ + + DRW_shgroup_uniform_vec4(fx_shgrp, "loc", &fxd->loc[0], 1); + + DRW_shgroup_uniform_float(fx_shgrp, "energy", &fxd->energy, 1); + DRW_shgroup_uniform_float(fx_shgrp, "ambient", &fxd->ambient, 1); + + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* Pixelate FX */ +static void DRW_gpencil_fx_pixel( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + PixelShaderFxData *fxd = (PixelShaderFxData *)fx; + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + bGPdata *gpd = cache->gpd; + + fxd->size[2] = (int)fxd->flag & FX_PIXEL_USE_LINES; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + fx_shgrp = DRW_shgroup_create(e_data->gpencil_fx_pixel_sh, psl->fx_shader_pass); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_int(fx_shgrp, "size", &fxd->size[0], 3); + DRW_shgroup_uniform_vec4(fx_shgrp, "color", &fxd->rgba[0], 1); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &gpd->pixfactor, 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* Rim FX */ +static void DRW_gpencil_fx_rim( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + RimShaderFxData *fxd = (RimShaderFxData *)fx; + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + /* prepare pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_rim_prepare_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + + DRW_shgroup_uniform_int(fx_shgrp, "offset", &fxd->offset[0], 2); + DRW_shgroup_uniform_vec3(fx_shgrp, "rim_color", &fxd->rim_rgb[0], 1); + DRW_shgroup_uniform_vec3(fx_shgrp, "mask_color", &fxd->mask_rgb[0], 1); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh = fx_shgrp; + + /* blur pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_blur_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_fx); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_fx); + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + DRW_shgroup_uniform_int(fx_shgrp, "blur", &fxd->blur[0], 2); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh_b = fx_shgrp; + + /* resolve pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_rim_resolve_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeRim", &e_data->temp_color_tx_fx); + DRW_shgroup_uniform_vec3(fx_shgrp, "mask_color", &fxd->mask_rgb[0], 1); + DRW_shgroup_uniform_int(fx_shgrp, "mode", &fxd->mode, 1); + + fxd->runtime.fx_sh_c = fx_shgrp; +} + +/* Shadow FX */ +static void DRW_gpencil_fx_shadow( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + ShadowShaderFxData *fxd = (ShadowShaderFxData *)fx; + if ((!fxd->object) && (fxd->flag & FX_SHADOW_USE_OBJECT)) { + return; + } + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + /* prepare pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_shadow_prepare_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + + DRW_shgroup_uniform_int(fx_shgrp, "offset", &fxd->offset[0], 2); + DRW_shgroup_uniform_float(fx_shgrp, "scale", &fxd->scale[0], 2); + DRW_shgroup_uniform_float(fx_shgrp, "rotation", &fxd->rotation, 1); + DRW_shgroup_uniform_vec4(fx_shgrp, "shadow_color", &fxd->shadow_rgba[0], 1); + + if ((fxd->object) && (fxd->flag & FX_SHADOW_USE_OBJECT)) { + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &fxd->object->loc[0], 1); + } + else { + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + } + + const int nowave = -1; + if (fxd->flag & FX_SHADOW_USE_WAVE) { + DRW_shgroup_uniform_int(fx_shgrp, "orientation", &fxd->orientation, 1); + } + else { + DRW_shgroup_uniform_int(fx_shgrp, "orientation", &nowave, 1); + } + DRW_shgroup_uniform_float(fx_shgrp, "amplitude", &fxd->amplitude, 1); + DRW_shgroup_uniform_float(fx_shgrp, "period", &fxd->period, 1); + DRW_shgroup_uniform_float(fx_shgrp, "phase", &fxd->phase, 1); + + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh = fx_shgrp; + + /* blur pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_blur_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_fx); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_fx); + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + DRW_shgroup_uniform_int(fx_shgrp, "blur", &fxd->blur[0], 2); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh_b = fx_shgrp; + + /* resolve pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_shadow_resolve_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "shadowColor", &e_data->temp_color_tx_fx); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "shadowDepth", &e_data->temp_depth_tx_fx); + + fxd->runtime.fx_sh_c = fx_shgrp; +} + +/* Glow FX */ +static void DRW_gpencil_fx_glow( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + GlowShaderFxData *fxd = (GlowShaderFxData *)fx; + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + /* prepare pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_glow_prepare_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + + DRW_shgroup_uniform_vec3(fx_shgrp, "glow_color", &fxd->glow_color[0], 1); + DRW_shgroup_uniform_vec3(fx_shgrp, "select_color", &fxd->select_color[0], 1); + DRW_shgroup_uniform_int(fx_shgrp, "mode", &fxd->mode, 1); + DRW_shgroup_uniform_float(fx_shgrp, "threshold", &fxd->threshold, 1); + + fxd->runtime.fx_sh = fx_shgrp; + + /* blur pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_blur_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_fx); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_fx); + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + DRW_shgroup_uniform_int(fx_shgrp, "blur", &fxd->blur[0], 2); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &cache->loc[0], 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh_b = fx_shgrp; + + /* resolve pass */ + fx_shgrp = DRW_shgroup_create( + e_data->gpencil_fx_glow_resolve_sh, + psl->fx_shader_pass_blend); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "glowColor", &e_data->temp_color_tx_fx); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "glowDepth", &e_data->temp_depth_tx_fx); + + /* reuse field */ + DRW_shgroup_uniform_int(fx_shgrp, "alpha_mode", &fxd->blur[1], 1); + + fxd->runtime.fx_sh_c = fx_shgrp; +} + +/* Swirl FX */ +static void DRW_gpencil_fx_swirl( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + if (fx == NULL) { + return; + } + SwirlShaderFxData *fxd = (SwirlShaderFxData *)fx; + if (fxd->object == NULL) { + return; + } + + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + DRWShadingGroup *fx_shgrp; + + fxd->transparent = (int)fxd->flag & FX_SWIRL_MAKE_TRANSPARENT; + + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + fx_shgrp = DRW_shgroup_create(e_data->gpencil_fx_swirl_sh, psl->fx_shader_pass); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + + DRW_shgroup_uniform_vec2(fx_shgrp, "Viewport", DRW_viewport_size_get(), 1); + + DRW_shgroup_uniform_vec3(fx_shgrp, "loc", &fxd->object->loc[0], 1); + + DRW_shgroup_uniform_int(fx_shgrp, "radius", &fxd->radius, 1); + DRW_shgroup_uniform_float(fx_shgrp, "angle", &fxd->angle, 1); + DRW_shgroup_uniform_int(fx_shgrp, "transparent", &fxd->transparent, 1); + + DRW_shgroup_uniform_float(fx_shgrp, "pixsize", stl->storage->pixsize, 1); + DRW_shgroup_uniform_float(fx_shgrp, "pixfactor", &cache->pixfactor, 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* Wave Distorsion FX */ +static void DRW_gpencil_fx_wave( + ShaderFxData *fx, GPENCIL_e_data *e_data, GPENCIL_Data *vedata) +{ + if (fx == NULL) { + return; + } + + WaveShaderFxData *fxd = (WaveShaderFxData *)fx; + + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPUBatch *fxquad = DRW_cache_fullscreen_quad_get(); + + DRWShadingGroup *fx_shgrp = DRW_shgroup_create(e_data->gpencil_fx_wave_sh, psl->fx_shader_pass); + DRW_shgroup_call_add(fx_shgrp, fxquad, NULL); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeColor", &e_data->temp_color_tx_a); + DRW_shgroup_uniform_texture_ref(fx_shgrp, "strokeDepth", &e_data->temp_depth_tx_a); + DRW_shgroup_uniform_float(fx_shgrp, "amplitude", &fxd->amplitude, 1); + DRW_shgroup_uniform_float(fx_shgrp, "period", &fxd->period, 1); + DRW_shgroup_uniform_float(fx_shgrp, "phase", &fxd->phase, 1); + DRW_shgroup_uniform_int(fx_shgrp, "orientation", &fxd->orientation, 1); + DRW_shgroup_uniform_vec2(fx_shgrp, "wsize", DRW_viewport_size_get(), 1); + + fxd->runtime.fx_sh = fx_shgrp; +} + +/* ************************************************************** */ + +/* create all FX shaders */ +void GPENCIL_create_fx_shaders(GPENCIL_e_data *e_data) +{ + /* fx shaders (all in screen space) */ + if (!e_data->gpencil_fx_blur_sh) { + e_data->gpencil_fx_blur_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_blur_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_colorize_sh) { + e_data->gpencil_fx_colorize_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_colorize_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_flip_sh) { + e_data->gpencil_fx_flip_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_flip_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_light_sh) { + e_data->gpencil_fx_light_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_light_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_pixel_sh) { + e_data->gpencil_fx_pixel_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_pixel_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_rim_prepare_sh) { + e_data->gpencil_fx_rim_prepare_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_rim_prepare_frag_glsl, NULL); + + e_data->gpencil_fx_rim_resolve_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_rim_resolve_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_shadow_prepare_sh) { + e_data->gpencil_fx_shadow_prepare_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_shadow_prepare_frag_glsl, NULL); + + e_data->gpencil_fx_shadow_resolve_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_shadow_resolve_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_glow_prepare_sh) { + e_data->gpencil_fx_glow_prepare_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_glow_prepare_frag_glsl, NULL); + + e_data->gpencil_fx_glow_resolve_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_glow_resolve_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_swirl_sh) { + e_data->gpencil_fx_swirl_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_swirl_frag_glsl, NULL); + } + if (!e_data->gpencil_fx_wave_sh) { + e_data->gpencil_fx_wave_sh = DRW_shader_create_fullscreen( + datatoc_gpencil_fx_wave_frag_glsl, NULL); + } +} + +/* free FX shaders */ +void GPENCIL_delete_fx_shaders(GPENCIL_e_data *e_data) +{ + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_blur_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_colorize_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_flip_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_light_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_pixel_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_rim_prepare_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_rim_resolve_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_shadow_prepare_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_shadow_resolve_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_glow_prepare_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_glow_resolve_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_swirl_sh); + DRW_SHADER_FREE_SAFE(e_data->gpencil_fx_wave_sh); +} + +/* create all passes used by FX */ +void GPENCIL_create_fx_passes(GPENCIL_PassList *psl) +{ + psl->fx_shader_pass = DRW_pass_create( + "GPencil Shader FX Pass", + DRW_STATE_WRITE_COLOR | + DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + psl->fx_shader_pass_blend = DRW_pass_create( + "GPencil Shader FX Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND | + DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); +} + + +/* prepare fx shading groups */ +void DRW_gpencil_fx_prepare( + GPENCIL_e_data *e_data, GPENCIL_Data *vedata, + tGPencilObjectCache *cache) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + int ob_idx = cache->idx; + + if (cache->shader_fx.first == NULL) { + return; + } + /* loop FX */ + for (ShaderFxData *fx = cache->shader_fx.first; fx; fx = fx->next) { + if (effect_is_active(cache->gpd, fx, stl->storage->is_render)) { + switch (fx->type) { + case eShaderFxType_Blur: + DRW_gpencil_fx_blur(fx, ob_idx, e_data, vedata, cache); + break; + case eShaderFxType_Colorize: + DRW_gpencil_fx_colorize(fx, e_data, vedata); + break; + case eShaderFxType_Flip: + DRW_gpencil_fx_flip(fx, e_data, vedata); + break; + case eShaderFxType_Light: + DRW_gpencil_fx_light(fx, e_data, vedata, cache); + break; + case eShaderFxType_Pixel: + DRW_gpencil_fx_pixel(fx, e_data, vedata, cache); + break; + case eShaderFxType_Rim: + DRW_gpencil_fx_rim(fx, e_data, vedata, cache); + break; + case eShaderFxType_Shadow: + DRW_gpencil_fx_shadow(fx, e_data, vedata, cache); + break; + case eShaderFxType_Glow: + DRW_gpencil_fx_glow(fx, e_data, vedata, cache); + break; + case eShaderFxType_Swirl: + DRW_gpencil_fx_swirl(fx, e_data, vedata, cache); + break; + case eShaderFxType_Wave: + DRW_gpencil_fx_wave(fx, e_data, vedata); + break; + default: + break; + } + } + } + +} + +/* helper to draw one FX pass and do ping-pong copy */ +static void gpencil_draw_fx_pass( + GPENCIL_e_data *e_data, + GPENCIL_PassList *psl, + GPENCIL_FramebufferList *fbl, + DRWShadingGroup *shgrp, bool blend) +{ + if (shgrp == NULL) { + return; + } + + const float clearcol[4] = {0.0f}; + GPU_framebuffer_bind(fbl->temp_fb_b); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_b, clearcol, 1.0f); + + /* draw effect pass in temp texture (B) using as source the previous image + * existing in the other temp texture (A) */ + if (!blend) { + DRW_draw_pass_subset(psl->fx_shader_pass, shgrp, shgrp); + } + else { + DRW_draw_pass_subset(psl->fx_shader_pass_blend, shgrp, shgrp); + } + + /* copy pass from b to a for ping-pong frame buffers */ + e_data->input_depth_tx = e_data->temp_depth_tx_b; + e_data->input_color_tx = e_data->temp_color_tx_b; + + GPU_framebuffer_bind(fbl->temp_fb_a); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_a, clearcol, 1.0f); + DRW_draw_pass(psl->mix_pass_noblend); +} + +/* helper to manage gaussian blur passes */ +static void draw_gpencil_blur_passes( + GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, + BlurShaderFxData *fxd) +{ + if (fxd->runtime.fx_sh == NULL) { + return; + } + + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + DRWShadingGroup *shgrp = fxd->runtime.fx_sh; + int samples = fxd->samples; + + float bx = fxd->blur[0]; + float by = fxd->blur[1]; + + /* the blur is done in two steps (Hor/Ver) because is faster and + * gets better result + * + * samples could be 0 and disable de blur effects because sometimes + * is easier animate the number of samples only, instead to animate the + * hide/unhide and the number of samples to make some effects. + */ + for (int b = 0; b < samples; b++) { + /* horizontal */ + if (bx > 0) { + fxd->blur[0] = bx; + fxd->blur[1] = 0; + gpencil_draw_fx_pass(e_data, psl, fbl, shgrp, true); + } + /* vertical */ + if (by > 0) { + fxd->blur[0] = 0; + fxd->blur[1] = by; + gpencil_draw_fx_pass(e_data, psl, fbl, shgrp, true); + } + } +} + +/* blur intermediate pass */ +static void draw_gpencil_midpass_blur( + GPENCIL_Data *vedata, + ShaderFxData_Runtime *runtime) +{ + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + const float clearcol[4] = {0.0f}; + + GPU_framebuffer_bind(fbl->temp_fb_b); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_b, clearcol, 1.0f); + DRW_draw_pass_subset(psl->fx_shader_pass_blend, + runtime->fx_sh_b, runtime->fx_sh_b); + + /* copy pass from b for ping-pong frame buffers */ + GPU_framebuffer_bind(fbl->temp_fb_fx); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_fx, clearcol, 1.0f); + DRW_draw_pass(psl->mix_pass_noblend); +} + +/* do blur of mid passes */ +static void draw_gpencil_do_blur( + GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, + ShaderFxData_Runtime *runtime, + int samples, int bx, int by, int blur[2]) +{ + e_data->input_depth_tx = e_data->temp_depth_tx_b; + e_data->input_color_tx = e_data->temp_color_tx_b; + + if ((samples > 0) && ((bx > 0) || (by > 0))) { + for (int x = 0; x < samples; x++) { + + /* horizontal */ + blur[0] = bx; + blur[1] = 0; + draw_gpencil_midpass_blur(vedata, runtime); + + /* Vertical */ + blur[0] = 0; + blur[1] = by; + draw_gpencil_midpass_blur(vedata, runtime); + + blur[0] = bx; + blur[1] = by; + } + } +} + +/* helper to draw RIM passes */ +static void draw_gpencil_rim_passes( + GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, + RimShaderFxData *fxd) +{ + if (fxd->runtime.fx_sh_b == NULL) { + return; + } + + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + + const float clearcol[4] = {0.0f}; + + /* prepare mask */ + GPU_framebuffer_bind(fbl->temp_fb_fx); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_fx, clearcol, 1.0f); + DRW_draw_pass_subset( + psl->fx_shader_pass_blend, + fxd->runtime.fx_sh, fxd->runtime.fx_sh); + + /* blur rim */ + draw_gpencil_do_blur( + e_data, vedata, &fxd->runtime, + fxd->samples, + fxd->blur[0], fxd->blur[1], + &fxd->blur[0]); + + /* resolve */ + GPU_framebuffer_bind(fbl->temp_fb_b); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_b, clearcol, 1.0f); + DRW_draw_pass_subset( + psl->fx_shader_pass_blend, + fxd->runtime.fx_sh_c, fxd->runtime.fx_sh_c); + + /* copy pass from b to a for ping-pong frame buffers */ + e_data->input_depth_tx = e_data->temp_depth_tx_b; + e_data->input_color_tx = e_data->temp_color_tx_b; + + GPU_framebuffer_bind(fbl->temp_fb_a); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_a, clearcol, 1.0f); + DRW_draw_pass(psl->mix_pass_noblend); +} + +/* helper to draw SHADOW passes */ +static void draw_gpencil_shadow_passes( + GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, + ShadowShaderFxData *fxd) +{ + if (fxd->runtime.fx_sh_b == NULL) { + return; + } + + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + const float clearcol[4] = {0.0f}; + + /* prepare shadow */ + GPU_framebuffer_bind(fbl->temp_fb_fx); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_fx, clearcol, 1.0f); + DRW_draw_pass_subset( + psl->fx_shader_pass_blend, + fxd->runtime.fx_sh, fxd->runtime.fx_sh); + + /* blur shadow */ + draw_gpencil_do_blur( + e_data, vedata, &fxd->runtime, + fxd->samples, + fxd->blur[0], fxd->blur[1], + &fxd->blur[0]); + + /* resolve */ + GPU_framebuffer_bind(fbl->temp_fb_b); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_b, clearcol, 1.0f); + DRW_draw_pass_subset( + psl->fx_shader_pass_blend, + fxd->runtime.fx_sh_c, fxd->runtime.fx_sh_c); + + /* copy pass from b to a for ping-pong frame buffers */ + e_data->input_depth_tx = e_data->temp_depth_tx_b; + e_data->input_color_tx = e_data->temp_color_tx_b; + + GPU_framebuffer_bind(fbl->temp_fb_a); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_a, clearcol, 1.0f); + DRW_draw_pass(psl->mix_pass_noblend); +} + +/* helper to draw GLOW passes */ +static void draw_gpencil_glow_passes( + GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, + GlowShaderFxData *fxd) +{ + if (fxd->runtime.fx_sh_b == NULL) { + return; + } + + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + + const float clearcol[4] = {0.0f}; + + /* prepare glow */ + GPU_framebuffer_bind(fbl->temp_fb_fx); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_fx, clearcol, 1.0f); + DRW_draw_pass_subset( + psl->fx_shader_pass_blend, + fxd->runtime.fx_sh, fxd->runtime.fx_sh); + + /* blur glow */ + draw_gpencil_do_blur( + e_data, vedata, &fxd->runtime, + fxd->samples, + fxd->blur[0], fxd->blur[0], + &fxd->blur[0]); + + /* resolve */ + GPU_framebuffer_bind(fbl->temp_fb_b); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_b, clearcol, 1.0f); + + /* reuses blur field to keep alpha mode */ + fxd->blur[1] = (fxd->flag & FX_GLOW_USE_ALPHA) ? 1 : 0; + + DRW_draw_pass_subset( + psl->fx_shader_pass_blend, + fxd->runtime.fx_sh_c, fxd->runtime.fx_sh_c); + + /* copy pass from b to a for ping-pong frame buffers */ + e_data->input_depth_tx = e_data->temp_depth_tx_b; + e_data->input_color_tx = e_data->temp_color_tx_b; + + GPU_framebuffer_bind(fbl->temp_fb_a); + GPU_framebuffer_clear_color_depth(fbl->temp_fb_a, clearcol, 1.0f); + DRW_draw_pass(psl->mix_pass_noblend); +} + +/* apply all object fx effects */ +void DRW_gpencil_fx_draw( + GPENCIL_e_data *e_data, + GPENCIL_Data *vedata, tGPencilObjectCache *cache) +{ + GPENCIL_StorageList *stl = ((GPENCIL_Data *)vedata)->stl; + GPENCIL_PassList *psl = ((GPENCIL_Data *)vedata)->psl; + GPENCIL_FramebufferList *fbl = ((GPENCIL_Data *)vedata)->fbl; + + /* loop FX modifiers */ + for (ShaderFxData *fx = cache->shader_fx.first; fx; fx = fx->next) { + if (effect_is_active(cache->gpd, fx, stl->storage->is_render)) { + switch (fx->type) { + + case eShaderFxType_Blur: + { + BlurShaderFxData *fxd = (BlurShaderFxData *)fx; + draw_gpencil_blur_passes(e_data, vedata, fxd); + break; + } + case eShaderFxType_Colorize: + { + ColorizeShaderFxData *fxd = (ColorizeShaderFxData *)fx; + gpencil_draw_fx_pass(e_data, psl, fbl, fxd->runtime.fx_sh, false); + break; + } + case eShaderFxType_Flip: + { + FlipShaderFxData *fxd = (FlipShaderFxData *)fx; + gpencil_draw_fx_pass(e_data, psl, fbl, fxd->runtime.fx_sh, false); + break; + } + case eShaderFxType_Light: + { + LightShaderFxData *fxd = (LightShaderFxData *)fx; + gpencil_draw_fx_pass(e_data, psl, fbl, fxd->runtime.fx_sh, false); + break; + } + case eShaderFxType_Pixel: + { + PixelShaderFxData *fxd = (PixelShaderFxData *)fx; + gpencil_draw_fx_pass(e_data, psl, fbl, fxd->runtime.fx_sh, false); + break; + } + case eShaderFxType_Rim: + { + RimShaderFxData *fxd = (RimShaderFxData *)fx; + draw_gpencil_rim_passes(e_data, vedata, fxd); + break; + } + case eShaderFxType_Shadow: + { + ShadowShaderFxData *fxd = (ShadowShaderFxData *)fx; + draw_gpencil_shadow_passes(e_data, vedata, fxd); + break; + } + case eShaderFxType_Glow: + { + GlowShaderFxData *fxd = (GlowShaderFxData *)fx; + draw_gpencil_glow_passes(e_data, vedata, fxd); + break; + } + case eShaderFxType_Swirl: + { + SwirlShaderFxData *fxd = (SwirlShaderFxData *)fx; + gpencil_draw_fx_pass(e_data, psl, fbl, fxd->runtime.fx_sh, false); + break; + } + case eShaderFxType_Wave: + { + WaveShaderFxData *fxd = (WaveShaderFxData *)fx; + gpencil_draw_fx_pass(e_data, psl, fbl, fxd->runtime.fx_sh, false); + break; + } + default: + break; + } + } + } +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_blur_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_blur_frag.glsl new file mode 100644 index 00000000000..e59cbef3e5d --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_blur_frag.glsl @@ -0,0 +1,87 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform vec2 Viewport; + +uniform int blur[2]; + +uniform vec3 loc; +uniform float pixsize; /* rv3d->pixsize */ +uniform float pixfactor; + +float defaultpixsize = pixsize * (1000.0 / pixfactor); +vec2 noffset = vec2(blur[0], blur[1]); + +out vec4 FragColor; + +float get_zdepth(ivec2 poxy) +{ + /* if outside viewport set as infinite depth */ + if ((poxy.x < 0) || (poxy.x > Viewport.x)) { + return 1.0f; + } + if ((poxy.y < 0) || (poxy.y > Viewport.y)) { + return 1.0f; + } + + float zdepth = texelFetch(strokeDepth, poxy, 0).r; + return zdepth; +} + +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + + vec4 nloc = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0); + + float dx = (ProjectionMatrix[3][3] == 0.0) ? (noffset[0] / (nloc.z * defaultpixsize)) : (noffset[0] / defaultpixsize); + float dy = (ProjectionMatrix[3][3] == 0.0) ? (noffset[1] / (nloc.z * defaultpixsize)) : (noffset[1] / defaultpixsize); + + /* round to avoid shift when add more samples */ + dx = floor(dx) + 1.0; + dy = floor(dy) + 1.0; + + /* apply blurring, using a 9-tap filter with predefined gaussian weights */ + /* depth (get the value of the surrounding pixels) */ + float outdepth = 0.0; + + outdepth += get_zdepth(ivec2(uv.x - 1.0 * dx, uv.y + 1.0 * dy)) * 0.0947416; + outdepth += get_zdepth(ivec2(uv.x - 0.0 * dx, uv.y + 1.0 * dy)) * 0.118318; + outdepth += get_zdepth(ivec2(uv.x + 1.0 * dx, uv.y + 1.0 * dy)) * 0.0947416; + outdepth += get_zdepth(ivec2(uv.x - 1.0 * dx, uv.y + 0.0 * dy)) * 0.118318; + + outdepth += get_zdepth(ivec2(uv.x, uv.y)) * 0.147761; + + outdepth += get_zdepth(ivec2(uv.x + 1.0 * dx, uv.y + 0.0 * dy)) * 0.118318; + outdepth += get_zdepth(ivec2(uv.x - 1.0 * dx, uv.y - 1.0 * dy)) * 0.0947416; + outdepth += get_zdepth(ivec2(uv.x + 0.0 * dx, uv.y - 1.0 * dy)) * 0.118318; + outdepth += get_zdepth(ivec2(uv.x + 1.0 * dx, uv.y - 1.0 * dy)) * 0.0947416; + + gl_FragDepth = outdepth; + + /* color */ + vec4 outcolor = vec4(0.0); + outcolor += texelFetch(strokeColor, ivec2(uv.x - 1.0 * dx, uv.y + 1.0 * dy), 0) * 0.0947416; + outcolor += texelFetch(strokeColor, ivec2(uv.x - 0.0 * dx, uv.y + 1.0 * dy), 0) * 0.118318; + outcolor += texelFetch(strokeColor, ivec2(uv.x + 1.0 * dx, uv.y + 1.0 * dy), 0) * 0.0947416; + outcolor += texelFetch(strokeColor, ivec2(uv.x - 1.0 * dx, uv.y + 0.0 * dy), 0) * 0.118318; + + outcolor += texelFetch(strokeColor, ivec2(uv.x, uv.y), 0) * 0.147761; + + outcolor += texelFetch(strokeColor, ivec2(uv.x + 1.0 * dx, uv.y + 0.0 * dy), 0) * 0.118318; + outcolor += texelFetch(strokeColor, ivec2(uv.x - 1.0 * dx, uv.y - 1.0 * dy), 0) * 0.0947416; + outcolor += texelFetch(strokeColor, ivec2(uv.x + 0.0 * dx, uv.y - 1.0 * dy), 0) * 0.118318; + outcolor += texelFetch(strokeColor, ivec2(uv.x + 1.0 * dx, uv.y - 1.0 * dy), 0) * 0.0947416; + + FragColor = clamp(outcolor, 0, 1.0); + + /* discar extreme values */ + if (outcolor.a < 0.02f) { + discard; + } + if ((outdepth <= 0.000001) || (outdepth >= 0.999999)){ + discard; + } +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_colorize_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_colorize_frag.glsl new file mode 100644 index 00000000000..33b249ac09b --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_colorize_frag.glsl @@ -0,0 +1,86 @@ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; + +uniform vec4 low_color; +uniform vec4 high_color; +uniform int mode; +uniform float factor; + +out vec4 FragColor; + +#define MODE_GRAYSCALE 0 +#define MODE_SEPIA 1 +#define MODE_BITONE 2 +#define MODE_CUSTOM 3 +#define MODE_TRANSPARENT 4 + +float get_luminance(vec4 color) +{ + float lum = (color.r * 0.2126) + (color.g * 0.7152) + (color.b * 0.723); + return lum; +} + +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + + float stroke_depth = texelFetch(strokeDepth, uv.xy, 0).r; + vec4 src_pixel= texelFetch(strokeColor, uv.xy, 0); + float luminance = get_luminance(src_pixel); + vec4 outcolor; + + /* is transparent */ + if (src_pixel.a == 0.0f) { + discard; + } + + switch(mode) { + case MODE_GRAYSCALE: + { + outcolor = vec4(luminance, luminance, luminance, src_pixel.a); + break; + } + case MODE_SEPIA: + { + float Red = (src_pixel.r * 0.393) + (src_pixel.g * 0.769) + (src_pixel.b * 0.189); + float Green = (src_pixel.r * 0.349) + (src_pixel.g * 0.686) + (src_pixel.b * 0.168); + float Blue = (src_pixel.r * 0.272) + (src_pixel.g * 0.534) + (src_pixel.b * 0.131); + outcolor = vec4(Red, Green, Blue, src_pixel.a); + break; + } + case MODE_BITONE: + { + if (luminance <= factor) { + outcolor = low_color; + } + else { + outcolor = high_color; + } + break; + } + case MODE_CUSTOM: + { + /* if below umbral, force custom color */ + if (luminance <= factor) { + outcolor = low_color; + } + else { + outcolor = vec4(luminance * low_color.r, luminance * low_color.b, luminance * low_color.b, src_pixel.a); + } + break; + } + case MODE_TRANSPARENT: + { + outcolor = vec4(src_pixel.rgb, src_pixel.a * factor); + break; + } + default: + { + outcolor = src_pixel; + } + + } + + gl_FragDepth = stroke_depth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_flip_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_flip_frag.glsl new file mode 100644 index 00000000000..43589461cd1 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_flip_frag.glsl @@ -0,0 +1,37 @@ +out vec4 FragColor; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform vec2 wsize; +uniform int flipmode; + +void main() +{ + vec2 mode = vec2(0,0); + /* horz. */ + if (flipmode >= 110) { + mode[0] = 1; + } + /* vert. */ + if ((flipmode == 101) || (flipmode == 111)) { + mode[1] = 1; + } + + vec2 uv = vec2(gl_FragCoord.xy); + float stroke_depth; + vec4 outcolor; + + if (mode[0] > 0) { + uv.x = wsize.x - uv.x; + } + if (mode[1] > 0) { + uv.y = wsize.y - uv.y; + } + + ivec2 iuv = ivec2(uv.x, uv.y); + stroke_depth = texelFetch(strokeDepth, iuv, 0).r; + outcolor = texelFetch(strokeColor, iuv, 0); + + gl_FragDepth = stroke_depth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_glow_prepare_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_glow_prepare_frag.glsl new file mode 100644 index 00000000000..9cdcad3e486 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_glow_prepare_frag.glsl @@ -0,0 +1,68 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +/* ******************************************************************* */ +/* create glow mask */ +/* ******************************************************************* */ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; + +uniform vec3 glow_color; +uniform vec3 select_color; +uniform float threshold; +uniform int mode; + +out vec4 FragColor; + +#define MODE_LUMINANCE 0 +#define MODE_COLOR 1 + +/* calc luminance */ +float luma( vec3 color ) { + /* the color is linear, so do not apply tonemapping */ + return (color.r + color.g + color.b) / 3.0; +} + +bool check_color(vec3 color_a, vec3 color_b) +{ + /* need round the number to avoid precision errors */ + if ((floor(color_a.r * 100) == floor(color_b.r * 100)) && + (floor(color_a.g * 100) == floor(color_b.g * 100)) && + (floor(color_a.b * 100) == floor(color_b.b * 100))) + { + return true; + } + + return false; +} + +void main() +{ + vec2 uv = vec2(gl_FragCoord.xy); + + float stroke_depth = texelFetch(strokeDepth, ivec2(uv.xy), 0).r; + vec4 src_pixel= texelFetch(strokeColor, ivec2(uv.xy), 0); + vec4 outcolor; + + /* is transparent */ + if (src_pixel.a == 0.0f) { + discard; + } + + if (mode == MODE_LUMINANCE) { + if (luma(src_pixel.rgb) < threshold) { + discard; + } + } + else if (mode == MODE_COLOR) { + if (!check_color(src_pixel.rgb, select_color.rgb)) { + discard; + } + } + else { + discard; + } + + gl_FragDepth = stroke_depth; + FragColor = vec4(glow_color.rgb, 1.0); +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_glow_resolve_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_glow_resolve_frag.glsl new file mode 100644 index 00000000000..5bff7a20523 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_glow_resolve_frag.glsl @@ -0,0 +1,46 @@ +/* ******************************************************************* */ +/* Resolve GLOW pass */ +/* ******************************************************************* */ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform sampler2D glowColor; +uniform sampler2D glowDepth; +uniform int alpha_mode; + +out vec4 FragColor; + +void main() +{ + vec4 outcolor; + ivec2 uv = ivec2(gl_FragCoord.xy); + + float stroke_depth = texelFetch(strokeDepth, uv.xy, 0).r; + vec4 src_pixel= texelFetch(strokeColor, uv.xy, 0); + vec4 glow_pixel= texelFetch(glowColor, uv.xy, 0); + float glow_depth = texelFetch(glowDepth, uv.xy, 0).r; + + if (alpha_mode == 0) { + outcolor = src_pixel + glow_pixel; + } + else { + if ((src_pixel.a < 0.1) || (glow_pixel.a < 0.1)) { + outcolor = src_pixel + glow_pixel; + } + else { + outcolor = src_pixel; + } + } + + if (src_pixel.a < glow_pixel.a) { + gl_FragDepth = glow_depth; + } + else { + gl_FragDepth = stroke_depth; + } + + if (outcolor.a < 0.001) { + discard; + } + + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_light_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_light_frag.glsl new file mode 100644 index 00000000000..c12dd223ebe --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_light_frag.glsl @@ -0,0 +1,69 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform vec2 Viewport; +uniform vec4 loc; +uniform float energy; +uniform float ambient; + +uniform float pixsize; /* rv3d->pixsize */ +uniform float pixfactor; + +out vec4 FragColor; + +float defaultpixsize = pixsize * (1000.0 / pixfactor); + +#define height loc.w + +/* project 3d point to 2d on screen space */ +vec2 toScreenSpace(vec4 vertex) +{ + /* need to calculate ndc because this is not done by vertex shader */ + vec3 ndc = vec3(vertex).xyz / vertex.w; + + vec2 sc; + sc.x = ((ndc.x + 1.0) / 2.0) * Viewport.x; + sc.y = ((ndc.y + 1.0) / 2.0) * Viewport.y; + + return sc; +} + +void main() +{ + float stroke_depth; + vec4 objcolor; + + vec4 light_loc = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0); + vec2 light2d = toScreenSpace(light_loc); + + /* calc pixel scale */ + float pxscale = (ProjectionMatrix[3][3] == 0.0) ? (10.0 / (light_loc.z * defaultpixsize)) : (10.0 / defaultpixsize); + pxscale = max(pxscale, 0.000001); + + /* the height over plane is received in the w component of the loc + * and needs a factor to adapt to pixels + */ + float peak = height * 10.0 * pxscale; + vec3 light3d = vec3(light2d.x, light2d.y, peak); + + vec2 uv = vec2(gl_FragCoord.xy); + vec3 frag_loc = vec3(uv.x, uv.y, 0); + vec3 norm = vec3(0, 0, 1.0); /* always z-up */ + + ivec2 iuv = ivec2(uv.x, uv.y); + stroke_depth = texelFetch(strokeDepth, iuv, 0).r; + objcolor = texelFetch(strokeColor, iuv, 0); + + /* diffuse light */ + vec3 lightdir = normalize(light3d - frag_loc); + float diff = max(dot(norm, lightdir), 0.0); + float dist = length(light3d - frag_loc) / pxscale; + float factor = diff * ((energy * 100.0) / (dist * dist)); + + vec3 result = factor * max(ambient, 0.1) * vec3(objcolor); + + gl_FragDepth = stroke_depth; + FragColor = vec4(result.r, result.g, result.b, objcolor.a); +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_pixel_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_pixel_frag.glsl new file mode 100644 index 00000000000..eb5596c639a --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_pixel_frag.glsl @@ -0,0 +1,49 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; + +uniform int size[3]; +uniform vec4 color; + +uniform vec3 loc; +uniform float pixsize; /* rv3d->pixsize */ +uniform float pixfactor; + +out vec4 FragColor; + +int uselines = size[2]; +float defaultpixsize = pixsize * (1000.0 / pixfactor); +vec2 nsize = max(vec2(size[0], size[1]), 3.0); + +/* This pixelation shader is a modified version of original Geeks3d.com code */ +void main() +{ + vec2 uv = vec2(gl_FragCoord.xy); + vec4 nloc = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0); + + float dx = (ProjectionMatrix[3][3] == 0.0) ? (nsize[0] / (nloc.z * defaultpixsize)) : (nsize[0] / defaultpixsize); + float dy = (ProjectionMatrix[3][3] == 0.0) ? (nsize[1] / (nloc.z * defaultpixsize)) : (nsize[1] / defaultpixsize); + + dx = max(abs(dx), 3.0); + dy = max(abs(dy), 3.0); + + vec2 coord = vec2(dx * floor(uv.x / dx), dy * floor(uv.y / dy)); + + float stroke_depth = texelFetch(strokeDepth, ivec2(coord), 0).r; + vec4 outcolor = texelFetch(strokeColor, ivec2(coord), 0); + + if (uselines == 1) { + float difx = uv.x - (floor(uv.x / nsize[0]) * nsize[0]); + if ((difx == 0.5) && (outcolor.a > 0)) { + outcolor = color; + } + float dify = uv.y - (floor(uv.y / nsize[1]) * nsize[1]); + if ((dify == 0.5) && (outcolor.a > 0)) { + outcolor = color; + } + } + gl_FragDepth = stroke_depth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_prepare_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_prepare_frag.glsl new file mode 100644 index 00000000000..2321429fbf1 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_prepare_frag.glsl @@ -0,0 +1,63 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +/* ******************************************************************* */ +/* create rim and mask */ +/* ******************************************************************* */ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform vec2 Viewport; + +uniform int offset[2]; +uniform vec3 rim_color; +uniform vec3 mask_color; + +uniform vec3 loc; +uniform float pixsize; /* rv3d->pixsize */ +uniform float pixfactor; + +float defaultpixsize = pixsize * (1000.0 / pixfactor); +vec2 noffset = vec2(offset[0], offset[1]); + +out vec4 FragColor; + +void main() +{ + vec2 uv = vec2(gl_FragCoord.xy); + vec4 nloc = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0); + + float dx = (ProjectionMatrix[3][3] == 0.0) ? (noffset[0] / (nloc.z * defaultpixsize)) : (noffset[0] / defaultpixsize); + float dy = (ProjectionMatrix[3][3] == 0.0) ? (noffset[1] / (nloc.z * defaultpixsize)) : (noffset[1] / defaultpixsize); + + float stroke_depth = texelFetch(strokeDepth, ivec2(uv.xy), 0).r; + vec4 src_pixel= texelFetch(strokeColor, ivec2(uv.xy), 0); + vec4 offset_pixel= texelFetch(strokeColor, ivec2(uv.x - dx, uv.y - dy), 0); + vec4 outcolor; + + /* is transparent */ + if (src_pixel.a == 0.0f) { + discard; + } + /* check inside viewport */ + else if ((uv.x - dx < 0) || (uv.x - dx > Viewport[0])) { + discard; + } + else if ((uv.y - dy < 0) || (uv.y - dy > Viewport[1])) { + discard; + } + /* pixel is equal to mask color, keep */ + else if (src_pixel.rgb == mask_color.rgb) { + discard; + } + else { + if ((src_pixel.a > 0) && (offset_pixel.a > 0)) { + discard; + } + else { + outcolor = vec4(rim_color, 1.0); + } + } + + gl_FragDepth = stroke_depth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_resolve_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_resolve_frag.glsl new file mode 100644 index 00000000000..0a7eb65d564 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_rim_resolve_frag.glsl @@ -0,0 +1,98 @@ +/* ******************************************************************* */ +/* Resolve RIM pass and add blur if needed */ +/* ******************************************************************* */ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform sampler2D strokeRim; + +uniform vec3 mask_color; +uniform int mode; + +out vec4 FragColor; + +#define MODE_NORMAL 0 +#define MODE_OVERLAY 1 +#define MODE_ADD 2 +#define MODE_SUB 3 +#define MODE_MULTIPLY 4 +#define MODE_DIVIDE 5 + +float overlay_color(float a, float b) +{ + float rtn; + if (a < 0.5) { + rtn = 2.0 * a * b; + } + else { + rtn = 1.0 - 2.0 * (1.0 - a) * (1.0 - b); + } + + return rtn; +} + +vec4 get_blend_color(int mode, vec4 src_color, vec4 mix_color) +{ + vec4 outcolor; + if (mode == MODE_NORMAL) { + outcolor = mix_color; + } + else if (mode == MODE_OVERLAY) { + outcolor.r = overlay_color(src_color.r, mix_color.r); + outcolor.g = overlay_color(src_color.g, mix_color.g); + outcolor.b = overlay_color(src_color.b, mix_color.b); + } + else if (mode == MODE_ADD){ + outcolor = src_color + mix_color; + } + else if (mode == MODE_SUB){ + outcolor = src_color - mix_color; + } + else if (mode == MODE_MULTIPLY) { + outcolor = src_color * mix_color; + } + else if (mode == MODE_DIVIDE) { + outcolor = src_color / mix_color; + } + else { + outcolor = mix_color; + } + + /* use always the alpha of source color */ + + outcolor.a = src_color.a; + /* use alpha to calculate the weight of the mixed color */ + outcolor = mix(src_color, outcolor, mix_color.a); + + return outcolor; +} + +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + + float stroke_depth = texelFetch(strokeDepth, uv.xy, 0).r; + vec4 src_pixel= texelFetch(strokeColor, uv.xy, 0); + vec4 rim_pixel= texelFetch(strokeRim, uv.xy, 0); + + vec4 outcolor = src_pixel; + + /* is transparent */ + if (src_pixel.a == 0.0f) { + discard; + } + /* pixel is equal to mask color, keep */ + else if (src_pixel.rgb == mask_color.rgb) { + outcolor = src_pixel; + } + else { + if (rim_pixel.a == 0.0f) { + outcolor = src_pixel; + } + else { + outcolor = get_blend_color(mode, src_pixel, rim_pixel); + } + } + + gl_FragDepth = stroke_depth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_shadow_prepare_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_shadow_prepare_frag.glsl new file mode 100644 index 00000000000..8bb92f69723 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_shadow_prepare_frag.glsl @@ -0,0 +1,97 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +/* ******************************************************************* */ +/* create shadow */ +/* ******************************************************************* */ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform vec2 Viewport; + +uniform int offset[2]; +uniform float scale[2]; +uniform float rotation; +uniform vec4 shadow_color; + +uniform float amplitude; +uniform float period; +uniform float phase; +uniform int orientation; + +uniform vec3 loc; +uniform float pixsize; /* rv3d->pixsize */ +uniform float pixfactor; + +#define M_PI 3.1415926535897932384626433832795 + +#define HORIZONTAL 0 +#define VERTICAL 1 + +float defaultpixsize = pixsize * (1000.0 / pixfactor); +vec2 noffset = vec2(offset[0], offset[1]); +float cosv = cos(rotation); +float sinv = sin(rotation); + +out vec4 FragColor; + +/* project 3d point to 2d on screen space */ +vec2 toScreenSpace(vec4 vertex) +{ + /* need to calculate ndc because this is not done by vertex shader */ + vec3 ndc = vec3(vertex).xyz / vertex.w; + + vec2 sc; + sc.x = ((ndc.x + 1.0) / 2.0) * Viewport.x; + sc.y = ((ndc.y + 1.0) / 2.0) * Viewport.y; + + return sc; +} + +void main() +{ + vec2 uv = vec2(gl_FragCoord.xy); + vec4 nloc = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0); + vec2 loc2d = toScreenSpace(nloc); + + float dx = (ProjectionMatrix[3][3] == 0.0) ? (noffset[0] / (nloc.z * defaultpixsize)) : (noffset[0] / defaultpixsize); + float dy = (ProjectionMatrix[3][3] == 0.0) ? (noffset[1] / (nloc.z * defaultpixsize)) : (noffset[1] / defaultpixsize); + + + /* move point to new coords system */ + vec2 tpos = vec2(uv.x, uv.y) - loc2d; + + /* rotation */ + if (rotation != 0) { + vec2 rotpoint = vec2((tpos.x * cosv) - (tpos.y * sinv), (tpos.x * sinv) + (tpos.y * cosv)); + tpos = rotpoint; + } + + /* apply offset */ + tpos = vec2(tpos.x - dx, tpos.y - dy); + + /* apply scale */ + tpos.x *= 1.0 / scale[0]; + tpos.y *= 1.0 / scale[1]; + + /* back to original coords system */ + vec2 texpos = tpos + loc2d; + + /* wave */ + if (orientation == HORIZONTAL) { + float pval = (uv.x * M_PI) / Viewport[0]; + texpos.y += amplitude * sin((period * pval) + phase); + } + else if (orientation == VERTICAL){ + float pval = (uv.y * M_PI) / Viewport[1]; + texpos.x += amplitude * sin((period * pval) + phase); + } + + vec4 src_pixel = texelFetch(strokeColor, ivec2(texpos.x, texpos.y), 0); + /* is transparent */ + if (src_pixel.a == 0.0f) { + discard; + } + + gl_FragDepth = texelFetch(strokeDepth, ivec2(texpos.x, texpos.y), 0).r; + FragColor = shadow_color; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_shadow_resolve_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_shadow_resolve_frag.glsl new file mode 100644 index 00000000000..0343d0d42fc --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_shadow_resolve_frag.glsl @@ -0,0 +1,32 @@ +/* ******************************************************************* */ +/* Resolve Shadow pass */ +/* ******************************************************************* */ +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform sampler2D shadowColor; +uniform sampler2D shadowDepth; + +out vec4 FragColor; + +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + + float stroke_depth = texelFetch(strokeDepth, uv.xy, 0).r; + float shadow_depth = texelFetch(shadowDepth, uv.xy, 0).r; + vec4 stroke_pixel= texelFetch(strokeColor, uv.xy, 0); + vec4 shadow_pixel= texelFetch(shadowColor, uv.xy, 0); + + /* copy original pixel */ + vec4 outcolor = stroke_pixel; + float outdepth = stroke_depth; + + /* if stroke is not on top, copy shadow */ + if ((stroke_pixel.a <= 0.2) && (shadow_pixel.a > 0.0)) { + outcolor = shadow_pixel; + outdepth = shadow_depth; + } + + gl_FragDepth = outdepth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_swirl_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_swirl_frag.glsl new file mode 100644 index 00000000000..92485987c93 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_swirl_frag.glsl @@ -0,0 +1,69 @@ +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrix; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; + +uniform vec2 Viewport; +uniform vec3 loc; +uniform int radius; +uniform float angle; +uniform int transparent; + +uniform float pixsize; /* rv3d->pixsize */ +uniform float pixfactor; + +out vec4 FragColor; + +float defaultpixsize = pixsize * (1000.0 / pixfactor); + +/* project 3d point to 2d on screen space */ +vec2 toScreenSpace(vec4 vertex) +{ + /* need to calculate ndc because this is not done by vertex shader */ + vec3 ndc = vec3(vertex).xyz / vertex.w; + + vec2 sc; + sc.x = ((ndc.x + 1.0) / 2.0) * Viewport.x; + sc.y = ((ndc.y + 1.0) / 2.0) * Viewport.y; + + return sc; +} + +/* This swirl shader is a modified version of original Geeks3d.com code */ +void main() +{ + vec2 uv = vec2(gl_FragCoord.xy); + float stroke_depth; + vec4 outcolor; + + vec4 center3d = ProjectionMatrix * ViewMatrix * vec4(loc.xyz, 1.0); + vec2 center = toScreenSpace(center3d); + vec2 tc = uv - center; + + float dist = length(tc); + float pxradius = (ProjectionMatrix[3][3] == 0.0) ? (radius / (loc.z * defaultpixsize)) : (radius / defaultpixsize); + pxradius = max(pxradius, 1); + + if (dist <= pxradius) { + float percent = (pxradius - dist) / pxradius; + float theta = percent * percent * angle * 8.0; + float s = sin(theta); + float c = cos(theta); + tc = vec2(dot(tc, vec2(c, -s)), dot(tc, vec2(s, c))); + tc += center; + + stroke_depth = texelFetch(strokeDepth, ivec2(tc), 0).r; + outcolor = texelFetch(strokeColor, ivec2(tc), 0); + } + else { + if (transparent == 1) { + discard; + } + stroke_depth = texelFetch(strokeDepth, ivec2(uv), 0).r; + outcolor = texelFetch(strokeColor, ivec2(uv), 0); + } + + gl_FragDepth = stroke_depth; + FragColor = outcolor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_wave_frag.glsl b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_wave_frag.glsl new file mode 100644 index 00000000000..3dbab0297c4 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/fx/gpencil_fx_wave_frag.glsl @@ -0,0 +1,43 @@ + +out vec4 FragColor; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; + +uniform float amplitude; +uniform float period; +uniform float phase; +uniform int orientation; +uniform vec2 wsize; + +#define M_PI 3.1415926535897932384626433832795 + +#define HORIZONTAL 0 +#define VERTICAL 1 + +void main() +{ + vec4 outcolor; + ivec2 uv = ivec2(gl_FragCoord.xy); + float stroke_depth; + + float value; + if (orientation == HORIZONTAL) { + float pval = (uv.x * M_PI) / wsize[0]; + value = amplitude * sin((period * pval) + phase); + outcolor = texelFetch(strokeColor, ivec2(uv.x, uv.y + value), 0); + stroke_depth = texelFetch(strokeDepth, ivec2(uv.x, uv.y + value), 0).r; + } + else { + float pval = (uv.y * M_PI) / wsize[1]; + value = amplitude * sin((period * pval) + phase); + outcolor = texelFetch(strokeColor, ivec2(uv.x + value, uv.y), 0); + stroke_depth = texelFetch(strokeDepth, ivec2(uv.x + value, uv.y), 0).r; + } + + FragColor = outcolor; + gl_FragDepth = stroke_depth; + + if (outcolor.a < 0.02f) + discard; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_background_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_background_frag.glsl new file mode 100644 index 00000000000..cbd7a461dd3 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_background_frag.glsl @@ -0,0 +1,12 @@ +out vec4 FragColor; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; + +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + + gl_FragDepth = texelFetch(strokeDepth, uv, 0).r; + FragColor = texelFetch(strokeColor, uv, 0); +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_blend_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_blend_frag.glsl new file mode 100644 index 00000000000..f5696116eea --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_blend_frag.glsl @@ -0,0 +1,155 @@ +in vec4 uvcoordsvar; + +out vec4 FragColor; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform sampler2D blendColor; +uniform sampler2D blendDepth; +uniform int mode; +uniform int clamp_layer; +uniform float blend_opacity; +uniform int tonemapping; + +#define ON 1 +#define OFF 0 + +#define MODE_NORMAL 0 +#define MODE_OVERLAY 1 +#define MODE_ADD 2 +#define MODE_SUB 3 +#define MODE_MULTIPLY 4 +#define MODE_DIVIDE 5 + +float overlay_color(float a, float b) +{ + float rtn; + if (a < 0.5) { + rtn = 2.0 * a * b; + } + else { + rtn = 1.0 - 2.0 * (1.0 - a) * (1.0 - b); + } + + return rtn; +} + +vec4 get_blend_color(int mode, vec4 src_color, vec4 blend_color) +{ + vec4 mix_color = blend_color; + vec4 outcolor; + + if (mix_color.a == 0) { + outcolor = src_color; + } + else if (mode == MODE_OVERLAY) { + mix_color.rgb = mix_color.rgb * mix_color.a * blend_opacity; + outcolor.r = overlay_color(src_color.r, mix_color.r); + outcolor.g = overlay_color(src_color.g, mix_color.g); + outcolor.b = overlay_color(src_color.b, mix_color.b); + outcolor.a = src_color.a; + } + else if (mode == MODE_ADD){ + mix_color.rgb = mix_color.rgb * mix_color.a * blend_opacity; + outcolor = src_color + mix_color; + outcolor.a = src_color.a; + } + else if (mode == MODE_SUB){ + outcolor = src_color - mix_color; + outcolor.a = clamp(src_color.a - (mix_color.a * blend_opacity), 0.0, 1.0); + } + else if (mode == MODE_MULTIPLY) { + /* interpolate between 1 and color using opacity */ + mix_color.rgb = mix(vec3(1,1,1), mix_color.rgb * mix_color.a, blend_opacity); + outcolor = src_color * mix_color; + outcolor.a = src_color.a; + } + else if (mode == MODE_DIVIDE) { + mix_color.rgb = mix_color.rgb * mix_color.a * blend_opacity; + outcolor = src_color / mix_color; + outcolor.a = src_color.a; + } + else { + outcolor = mix_color * blend_opacity;; + outcolor.a = src_color.a; + } + + return outcolor; +} + +float linearrgb_to_srgb(float c) +{ + if (c < 0.0031308) + return (c < 0.0) ? 0.0 : c * 12.92; + else + return 1.055 * pow(c, 1.0 / 2.4) - 0.055; +} + +vec4 tone(vec4 stroke_color) +{ + if (tonemapping == 1) { + vec4 color = vec4(0, 0, 0, stroke_color.a); + color.r = linearrgb_to_srgb(stroke_color.r); + color.g = linearrgb_to_srgb(stroke_color.g); + color.b = linearrgb_to_srgb(stroke_color.b); + return color; + } + else { + return stroke_color; + } +} + +void main() +{ + vec4 outcolor; + ivec2 uv = ivec2(gl_FragCoord.xy); + vec4 stroke_color = texelFetch(strokeColor, uv, 0).rgba; + float stroke_depth = texelFetch(strokeDepth, uv, 0).r; + + vec4 mix_color = texelFetch(blendColor, uv, 0).rgba; + float mix_depth = texelFetch(blendDepth, uv, 0).r; + + /* premult alpha factor to remove double blend effects */ + if (stroke_color.a > 0) { + stroke_color = vec4(vec3(stroke_color.rgb / stroke_color.a), stroke_color.a); + } + if (mix_color.a > 0) { + mix_color = vec4(vec3(mix_color.rgb / mix_color.a), mix_color.a); + } + + /* Normal mode */ + if (mode == MODE_NORMAL) { + if (stroke_color.a > 0) { + if (mix_color.a > 0) { + FragColor = vec4(mix(stroke_color.rgb, mix_color.rgb, mix_color.a), stroke_color.a); + gl_FragDepth = mix_depth; + } + else { + FragColor = stroke_color; + gl_FragDepth = stroke_depth; + } + } + else { + if (clamp_layer == ON) { + discard; + } + else { + FragColor = mix_color; + gl_FragDepth = mix_depth; + } + } + FragColor = tone(FragColor); + return; + } + + /* if not using mask, return mix color */ + if ((stroke_color.a == 0) && (clamp_layer == OFF)) { + FragColor = tone(mix_color); + gl_FragDepth = mix_depth; + return; + } + + /* apply blend mode */ + FragColor = tone(get_blend_color(mode, stroke_color, mix_color)); + gl_FragDepth = stroke_depth; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_frag.glsl new file mode 100644 index 00000000000..b3bd8e488f2 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_frag.glsl @@ -0,0 +1,17 @@ +in vec4 mColor; +in vec2 mTexCoord; +out vec4 fragColor; + +void main() +{ + vec2 centered = mTexCoord - vec2(0.5); + float dist_squared = dot(centered, centered); + const float rad_squared = 0.25; + + // round point with jaggy edges + if (dist_squared > rad_squared) { + discard; + } + + fragColor = mColor; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_geom.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_geom.glsl new file mode 100644 index 00000000000..0d2da00db66 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_geom.glsl @@ -0,0 +1,48 @@ +uniform mat4 ModelViewProjectionMatrix; +uniform vec2 Viewport; + +layout(points) in; +layout(triangle_strip, max_vertices = 4) out; + +in vec4 finalColor[1]; +in float finalThickness[1]; + +out vec4 mColor; +out vec2 mTexCoord; + +/* project 3d point to 2d on screen space */ +vec2 toScreenSpace(vec4 vertex) +{ + return vec2(vertex.xy / vertex.w) * Viewport; +} + +void main(void) +{ + vec4 P0 = gl_in[0].gl_Position; + vec2 sp0 = toScreenSpace(P0); + + float size = finalThickness[0]; + + /* generate the triangle strip */ + mTexCoord = vec2(0, 1); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x - size, sp0.y + size) / Viewport, 0, 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 0); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x - size, sp0.y - size) / Viewport, 0, 1.0); + EmitVertex(); + + mTexCoord = vec2(1, 1); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x + size, sp0.y + size) / Viewport, 0, 1.0); + EmitVertex(); + + mTexCoord = vec2(1, 0); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x + size, sp0.y - size) / Viewport, 0, 1.0); + EmitVertex(); + + EndPrimitive(); +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_vert.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_vert.glsl new file mode 100644 index 00000000000..77fdf58bea0 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_edit_point_vert.glsl @@ -0,0 +1,15 @@ +uniform mat4 ModelViewProjectionMatrix; + +in vec3 pos; +in vec4 color; +in float size; + +out vec4 finalColor; +out float finalThickness; + +void main() +{ + gl_Position = ModelViewProjectionMatrix * vec4( pos, 1.0 ); + finalColor = color; + finalThickness = size; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_fill_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_fill_frag.glsl new file mode 100644 index 00000000000..1d57cdc4bcf --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_fill_frag.glsl @@ -0,0 +1,147 @@ +uniform vec4 color2; +uniform int fill_type; +uniform float mix_factor; + +uniform float gradient_angle; +uniform float gradient_radius; +uniform float pattern_gridsize; +uniform vec2 gradient_scale; +uniform vec2 gradient_shift; + +uniform float texture_angle; +uniform vec2 texture_scale; +uniform vec2 texture_offset; +uniform int texture_mix; +uniform int texture_flip; +uniform float texture_opacity; +uniform int xraymode; +uniform float layer_opacity; + +uniform sampler2D myTexture; +uniform int texture_clamp; + +/* keep this list synchronized with list in gpencil_draw_utils.c */ +#define SOLID 0 +#define GRADIENT 1 +#define RADIAL 2 +#define CHESS 3 +#define TEXTURE 4 +#define PATTERN 5 + +#define GP_XRAY_FRONT 0 +#define GP_XRAY_3DSPACE 1 +#define GP_XRAY_BACK 2 + +in vec4 finalColor; +in vec2 texCoord_interp; +out vec4 fragColor; +#define texture2D texture + +void set_color(in vec4 color, in vec4 color2, in vec4 tcolor, in float mixv, in float factor, + in int tmix, in int flip, out vec4 ocolor) +{ + /* full color A */ + if (mixv == 1.0) { + if (tmix == 1) { + ocolor = (flip == 0) ? color : tcolor; + } + else { + ocolor = (flip == 0) ? color : color2; + } + } + /* full color B */ + else if (mixv == 0.0) { + if (tmix == 1) { + ocolor = (flip == 0) ? tcolor : color; + } + else { + ocolor = (flip == 0) ? color2 : color; + } + } + /* mix of colors */ + else { + if (tmix == 1) { + ocolor = (flip == 0) ? mix(color, tcolor, factor) : mix(tcolor, color, factor); + } + else { + ocolor = (flip == 0) ? mix(color, color2, factor) : mix(color2, color, factor); + } + } + ocolor.a *= layer_opacity; +} + +void main() +{ + vec2 t_center = vec2(0.5, 0.5); + mat2 matrot_tex = mat2(cos(texture_angle), -sin(texture_angle), sin(texture_angle), cos(texture_angle)); + vec2 rot_tex = (matrot_tex * (texCoord_interp - t_center)) + t_center + texture_offset; + vec4 tmp_color; + tmp_color = (texture_clamp == 0) ? texture2D(myTexture, rot_tex * texture_scale) : texture2D(myTexture, clamp(rot_tex * texture_scale, 0.0, 1.0)); + vec4 text_color = vec4(tmp_color[0], tmp_color[1], tmp_color[2], tmp_color[3] * texture_opacity); + vec4 chesscolor; + + /* solid fill */ + if (fill_type == SOLID) { + fragColor = finalColor; + } + else { + vec2 center = vec2(0.5, 0.5) + gradient_shift; + mat2 matrot = mat2(cos(gradient_angle), -sin(gradient_angle), sin(gradient_angle), cos(gradient_angle)); + vec2 rot = (((matrot * (texCoord_interp - center)) + center) * gradient_scale) + gradient_shift; + /* gradient */ + if (fill_type == GRADIENT) { + set_color(finalColor, color2, text_color, mix_factor, rot.x - mix_factor + 0.5, texture_mix, texture_flip, fragColor); + } + /* radial gradient */ + if (fill_type == RADIAL) { + float in_rad = gradient_radius * mix_factor; + float ex_rad = gradient_radius - in_rad; + float intensity = 0; + float distance = length((center - texCoord_interp) * gradient_scale); + if (distance > gradient_radius) { + discard; + } + if (distance > in_rad) { + intensity = clamp(((distance - in_rad) / ex_rad), 0.0, 1.0); + } + set_color(finalColor, color2, text_color, mix_factor, intensity, texture_mix, texture_flip, fragColor); + } + /* chessboard */ + if (fill_type == CHESS) { + vec2 pos = rot / pattern_gridsize; + if ((fract(pos.x) < 0.5 && fract(pos.y) < 0.5) || (fract(pos.x) > 0.5 && fract(pos.y) > 0.5)) { + chesscolor = (texture_flip == 0) ? finalColor : color2; + } + else { + chesscolor = (texture_flip == 0) ? color2 : finalColor; + } + /* mix with texture */ + fragColor = (texture_mix == 1) ? mix(chesscolor, text_color, mix_factor) : chesscolor; + fragColor.a *= layer_opacity; + } + /* texture */ + if (fill_type == TEXTURE) { + fragColor = (texture_mix == 1) ? mix(text_color, finalColor, mix_factor) : text_color; + fragColor.a *= layer_opacity; + } + /* pattern */ + if (fill_type == PATTERN) { + fragColor = finalColor; + fragColor.a = min(text_color.a, finalColor.a) * layer_opacity; + } + } + + /* set zdepth */ + if (xraymode == GP_XRAY_FRONT) { + gl_FragDepth = 0.000001; + } + else if (xraymode == GP_XRAY_3DSPACE) { + gl_FragDepth = gl_FragCoord.z; + } + else if (xraymode == GP_XRAY_BACK) { + gl_FragDepth = 0.999999; + } + else { + gl_FragDepth = 0.000001; + } +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_fill_vert.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_fill_vert.glsl new file mode 100644 index 00000000000..52da354a562 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_fill_vert.glsl @@ -0,0 +1,14 @@ +uniform mat4 ModelViewProjectionMatrix; + +in vec3 pos; +in vec4 color; +in vec2 texCoord; +out vec4 finalColor; +out vec2 texCoord_interp; + +void main(void) +{ + gl_Position = ModelViewProjectionMatrix * vec4( pos, 1.0 ); + finalColor = color; + texCoord_interp = texCoord; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl new file mode 100644 index 00000000000..c2e3f787bec --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_paper_frag.glsl @@ -0,0 +1,9 @@ +uniform vec3 color; +uniform float opacity; + +out vec4 FragColor; + +void main() +{ + FragColor = vec4(color, opacity); +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_point_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_point_frag.glsl new file mode 100644 index 00000000000..db973056110 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_point_frag.glsl @@ -0,0 +1,51 @@ +uniform int color_type; +uniform int mode; +uniform sampler2D myTexture; + +in vec4 mColor; +in vec2 mTexCoord; +out vec4 fragColor; + +#define texture2D texture + +#define GPENCIL_MODE_LINE 0 +#define GPENCIL_MODE_DOTS 1 +#define GPENCIL_MODE_BOX 2 + +/* keep this list synchronized with list in gpencil_engine.h */ +#define GPENCIL_COLOR_SOLID 0 +#define GPENCIL_COLOR_TEXTURE 1 +#define GPENCIL_COLOR_PATTERN 2 + +void main() +{ + vec2 centered = mTexCoord - vec2(0.5); + float dist_squared = dot(centered, centered); + const float rad_squared = 0.25; + + // round point with jaggy edges + if ((mode != GPENCIL_MODE_BOX) && (dist_squared > rad_squared)) + discard; + + vec4 tmp_color = texture2D(myTexture, mTexCoord); + + /* Solid */ + if (color_type == GPENCIL_COLOR_SOLID) { + fragColor = mColor; + } + /* texture */ + if (color_type == GPENCIL_COLOR_TEXTURE) { + fragColor = texture2D(myTexture, mTexCoord); + /* mult both alpha factor to use strength factor with texture */ + fragColor.a = min(fragColor.a * mColor.a, fragColor.a); + } + /* pattern */ + if (color_type == GPENCIL_COLOR_PATTERN) { + vec4 text_color = texture2D(myTexture, mTexCoord); + fragColor = mColor; + /* mult both alpha factor to use strength factor with color alpha limit */ + fragColor.a = min(text_color.a * mColor.a, mColor.a); + } + if(fragColor.a < 0.0035) + discard; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_point_geom.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_point_geom.glsl new file mode 100644 index 00000000000..63f22e0f812 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_point_geom.glsl @@ -0,0 +1,82 @@ +uniform mat4 ModelViewProjectionMatrix; +uniform vec2 Viewport; +uniform int xraymode; + +layout(points) in; +layout(triangle_strip, max_vertices = 4) out; + +in vec4 finalColor[1]; +in float finalThickness[1]; +in vec2 finaluvdata[1]; + +out vec4 mColor; +out vec2 mTexCoord; + +#define GP_XRAY_FRONT 0 +#define GP_XRAY_3DSPACE 1 +#define GP_XRAY_BACK 2 + +/* project 3d point to 2d on screen space */ +vec2 toScreenSpace(vec4 vertex) +{ + return vec2(vertex.xy / vertex.w) * Viewport; +} + +/* get zdepth value */ +float getZdepth(vec4 point) +{ + if (xraymode == GP_XRAY_FRONT) { + return 0.000001; + } + if (xraymode == GP_XRAY_3DSPACE) { + return (point.z / point.w); + } + if (xraymode == GP_XRAY_BACK) { + return 0.999999; + } + + /* in front by default */ + return 0.000001; +} + +vec2 rotateUV(vec2 uv, float angle) +{ + /* translate center of rotation to the center of texture */ + vec2 new_uv = uv - vec2(0.5f, 0.5f); + vec2 rot_uv; + rot_uv.x = new_uv.x * cos(angle) - new_uv.y * sin(angle); + rot_uv.y = new_uv.y * cos(angle) + new_uv.x * sin(angle); + return rot_uv + vec2(0.5f, 0.5f); +} + +void main(void) +{ + /* receive 4 points */ + vec4 P0 = gl_in[0].gl_Position; + vec2 sp0 = toScreenSpace(P0); + + float size = finalThickness[0]; + float aspect = 1.0; + /* generate the triangle strip */ + mTexCoord = rotateUV(vec2(0, 1), finaluvdata[0].y); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x - size, sp0.y + size * aspect) / Viewport, getZdepth(P0), 1.0); + EmitVertex(); + + mTexCoord = rotateUV(vec2(0, 0), finaluvdata[0].y); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x - size, sp0.y - size * aspect) / Viewport, getZdepth(P0), 1.0); + EmitVertex(); + + mTexCoord = rotateUV(vec2(1, 1), finaluvdata[0].y); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x + size, sp0.y + size * aspect) / Viewport, getZdepth(P0), 1.0); + EmitVertex(); + + mTexCoord = rotateUV(vec2(1, 0), finaluvdata[0].y); + mColor = finalColor[0]; + gl_Position = vec4(vec2(sp0.x + size, sp0.y - size * aspect) / Viewport, getZdepth(P0), 1.0); + EmitVertex(); + + EndPrimitive(); +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_point_vert.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_point_vert.glsl new file mode 100644 index 00000000000..f870bfbb48d --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_point_vert.glsl @@ -0,0 +1,36 @@ +uniform mat4 ModelViewProjectionMatrix; +uniform mat4 ProjectionMatrix; + +uniform float pixsize; /* rv3d->pixsize */ +uniform int keep_size; +uniform float objscale; +uniform float pixfactor; + +in vec3 pos; +in vec4 color; +in float thickness; +in vec2 uvdata; + +out vec4 finalColor; +out float finalThickness; +out vec2 finaluvdata; + +#define TRUE 1 + +float defaultpixsize = pixsize * (1000.0 / pixfactor); + +void main() +{ + gl_Position = ModelViewProjectionMatrix * vec4( pos, 1.0 ); + finalColor = color; + + if (keep_size == TRUE) { + finalThickness = thickness; + } + else { + float size = (ProjectionMatrix[3][3] == 0.0) ? (thickness / (gl_Position.z * defaultpixsize)) : (thickness / defaultpixsize); + finalThickness = max(size * objscale, 4.0); /* minimum 4 pixels */ + } + + finaluvdata = uvdata; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_simple_mix_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_simple_mix_frag.glsl new file mode 100644 index 00000000000..dd54e38c3d0 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_simple_mix_frag.glsl @@ -0,0 +1,15 @@ +in vec4 uvcoordsvar; + +out vec4 FragColor; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + float stroke_depth = texelFetch(strokeDepth, uv, 0).r; + vec4 stroke_color = texelFetch(strokeColor, uv, 0).rgba; + + FragColor = stroke_color; + gl_FragDepth = stroke_depth; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_frag.glsl new file mode 100644 index 00000000000..9a82e871f56 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_frag.glsl @@ -0,0 +1,49 @@ +uniform int color_type; +uniform sampler2D myTexture; + +in vec4 mColor; +in vec2 mTexCoord; +in float uvfac; + +out vec4 fragColor; + +#define texture2D texture + +/* keep this list synchronized with list in gpencil_engine.h */ +#define GPENCIL_COLOR_SOLID 0 +#define GPENCIL_COLOR_TEXTURE 1 +#define GPENCIL_COLOR_PATTERN 2 + +void main() +{ + vec4 tColor = vec4(mColor); + /* if alpha < 0, then encap (only solid mode ) */ + if ((mColor.a < 0) && (color_type == GPENCIL_COLOR_SOLID)) { + vec2 center = vec2(uvfac, 1.0); + tColor.a = tColor.a * -1.0; + float dist = length(mTexCoord - center); + if (dist > 0.50) { + discard; + } + } + /* Solid */ + if (color_type == GPENCIL_COLOR_SOLID) { + fragColor = tColor; + } + /* texture */ + if (color_type == GPENCIL_COLOR_TEXTURE) { + fragColor = texture2D(myTexture, mTexCoord); + /* mult both alpha factor to use strength factor */ + fragColor.a = min(fragColor.a * tColor.a, fragColor.a); + } + /* pattern */ + if (color_type == GPENCIL_COLOR_PATTERN) { + vec4 text_color = texture2D(myTexture, mTexCoord); + fragColor = tColor; + /* mult both alpha factor to use strength factor with color alpha limit */ + fragColor.a = min(text_color.a * tColor.a, tColor.a); + } + + if(fragColor.a < 0.0035) + discard; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_geom.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_geom.glsl new file mode 100644 index 00000000000..f9054b44996 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_geom.glsl @@ -0,0 +1,208 @@ +uniform mat4 ModelViewProjectionMatrix; +uniform vec2 Viewport; +uniform int xraymode; +uniform int color_type; + +layout(lines_adjacency) in; +layout(triangle_strip, max_vertices = 13) out; + +in vec4 finalColor[4]; +in float finalThickness[4]; +in vec2 finaluvdata[4]; + +out vec4 mColor; +out vec2 mTexCoord; +out float uvfac; + +#define GP_XRAY_FRONT 0 +#define GP_XRAY_3DSPACE 1 +#define GP_XRAY_BACK 2 + +/* keep this list synchronized with list in gpencil_engine.h */ +#define GPENCIL_COLOR_SOLID 0 +#define GPENCIL_COLOR_TEXTURE 1 +#define GPENCIL_COLOR_PATTERN 2 + +/* project 3d point to 2d on screen space */ +vec2 toScreenSpace(vec4 vertex) +{ + return vec2(vertex.xy / vertex.w) * Viewport; +} + +/* get zdepth value */ +float getZdepth(vec4 point) +{ + if (xraymode == GP_XRAY_FRONT) { + return 0.000001; + } + if (xraymode == GP_XRAY_3DSPACE) { + return (point.z / point.w); + } + if (xraymode == GP_XRAY_BACK) { + return 0.999999; + } + + /* in front by default */ + return 0.000001; +} +void main(void) +{ + float MiterLimit = 0.75; + uvfac = 0; + + /* receive 4 points */ + vec4 P0 = gl_in[0].gl_Position; + vec4 P1 = gl_in[1].gl_Position; + vec4 P2 = gl_in[2].gl_Position; + vec4 P3 = gl_in[3].gl_Position; + + /* get the four vertices passed to the shader */ + vec2 sp0 = toScreenSpace(P0); // start of previous segment + vec2 sp1 = toScreenSpace(P1); // end of previous segment, start of current segment + vec2 sp2 = toScreenSpace(P2); // end of current segment, start of next segment + vec2 sp3 = toScreenSpace(P3); // end of next segment + + /* culling outside viewport */ + vec2 area = Viewport * 4.0; + if (sp1.x < -area.x || sp1.x > area.x) return; + if (sp1.y < -area.y || sp1.y > area.y) return; + if (sp2.x < -area.x || sp2.x > area.x) return; + if (sp2.y < -area.y || sp2.y > area.y) return; + + /* determine the direction of each of the 3 segments (previous, current, next) */ + vec2 v0 = normalize(sp1 - sp0); + vec2 v1 = normalize(sp2 - sp1); + vec2 v2 = normalize(sp3 - sp2); + + /* determine the normal of each of the 3 segments (previous, current, next) */ + vec2 n0 = vec2(-v0.y, v0.x); + vec2 n1 = vec2(-v1.y, v1.x); + vec2 n2 = vec2(-v2.y, v2.x); + + /* determine miter lines by averaging the normals of the 2 segments */ + vec2 miter_a = normalize(n0 + n1); // miter at start of current segment + vec2 miter_b = normalize(n1 + n2); // miter at end of current segment + + /* determine the length of the miter by projecting it onto normal and then inverse it */ + float an1 = dot(miter_a, n1); + float bn1 = dot(miter_b, n2); + if (an1 == 0) an1 = 1; + if (bn1 == 0) bn1 = 1; + float length_a = finalThickness[1] / an1; + float length_b = finalThickness[2] / bn1; + if (length_a <= 0.0) length_a = 0.01; + if (length_b <= 0.0) length_b = 0.01; + + /* prevent excessively long miters at sharp corners */ + if (dot(v0, v1) < -MiterLimit) { + miter_a = n1; + length_a = finalThickness[1]; + + /* close the gap */ + if (dot(v0, n1) > 0) { + mTexCoord = vec2(0, 0); + mColor = finalColor[1]; + gl_Position = vec4((sp1 + finalThickness[1] * n0) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 0); + mColor = finalColor[1]; + gl_Position = vec4((sp1 + finalThickness[1] * n1) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 0.5); + mColor = finalColor[1]; + gl_Position = vec4(sp1 / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + EndPrimitive(); + } + else { + mTexCoord = vec2(0, 1); + mColor = finalColor[1]; + gl_Position = vec4((sp1 - finalThickness[1] * n1) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 1); + mColor = finalColor[1]; + gl_Position = vec4((sp1 - finalThickness[1] * n0) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 0.5); + mColor = finalColor[1]; + gl_Position = vec4(sp1 / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + EndPrimitive(); + } + } + + if (dot(v1, v2) < -MiterLimit) { + miter_b = n1; + length_b = finalThickness[2]; + } + + /* generate the start endcap (alpha < 0 used as endcap flag)*/ + if ((P0 == P2) && (color_type == GPENCIL_COLOR_SOLID)){ + mTexCoord = vec2(2, 1); + mColor = vec4(finalColor[1].rgb, finalColor[1].a * -1.0) ; + vec2 svn1 = normalize(sp1 - sp2) * length_a * 4.0; + gl_Position = vec4((sp1 + svn1) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 0); + mColor = vec4(finalColor[1].rgb, finalColor[1].a * -1.0) ; + gl_Position = vec4((sp1 - (length_a * 2.0) * miter_a) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = vec2(0, 2); + mColor = vec4(finalColor[1].rgb, finalColor[1].a * -1.0) ; + gl_Position = vec4((sp1 + (length_a * 2.0) * miter_a) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + } + + /* generate the triangle strip */ + mTexCoord = (color_type == GPENCIL_COLOR_SOLID) ? vec2(0, 0) : vec2(finaluvdata[1].x, 0); + mColor = finalColor[1]; + gl_Position = vec4((sp1 + length_a * miter_a) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = (color_type == GPENCIL_COLOR_SOLID) ? vec2(0, 1) : vec2(finaluvdata[1].x, 1); + mColor = finalColor[1]; + gl_Position = vec4((sp1 - length_a * miter_a) / Viewport, getZdepth(P1), 1.0); + EmitVertex(); + + mTexCoord = (color_type == GPENCIL_COLOR_SOLID) ? vec2(1, 0) : vec2(finaluvdata[2].x, 0); + mColor = finalColor[2]; + gl_Position = vec4((sp2 + length_b * miter_b) / Viewport, getZdepth(P2), 1.0); + EmitVertex(); + + mTexCoord = (color_type == GPENCIL_COLOR_SOLID) ? vec2(1, 1) : vec2(finaluvdata[2].x, 1); + mColor = finalColor[2]; + gl_Position = vec4((sp2 - length_b * miter_b) / Viewport, getZdepth(P2), 1.0); + EmitVertex(); + + /* generate the end endcap (alpha < 0 used as endcap flag)*/ + if ((P1 == P3) && (color_type == GPENCIL_COLOR_SOLID)){ + mTexCoord = vec2(finaluvdata[2].x, 2); + mColor = vec4(finalColor[2].rgb, finalColor[2].a * -1.0) ; + uvfac = finaluvdata[2].x; + gl_Position = vec4((sp2 + (length_b * 2.0) * miter_b) / Viewport, getZdepth(P2), 1.0); + EmitVertex(); + + mTexCoord = vec2(finaluvdata[2].x, 0); + mColor = vec4(finalColor[2].rgb, finalColor[2].a * -1.0) ; + uvfac = finaluvdata[2].x; + gl_Position = vec4((sp2 - (length_b * 2.0) * miter_b) / Viewport, getZdepth(P2), 1.0); + EmitVertex(); + + mTexCoord = vec2(finaluvdata[2].x + 2, 1); + mColor = vec4(finalColor[2].rgb, finalColor[2].a * -1.0) ; + uvfac = finaluvdata[2].x; + vec2 svn2 = normalize(sp2 - sp1) * length_b * 4.0; + gl_Position = vec4((sp2 + svn2) / Viewport, getZdepth(P2), 1.0); + EmitVertex(); + } + + EndPrimitive(); +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_vert.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_vert.glsl new file mode 100644 index 00000000000..121e244ac8a --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_stroke_vert.glsl @@ -0,0 +1,36 @@ +uniform mat4 ModelViewProjectionMatrix; +uniform mat4 ProjectionMatrix; + +uniform float pixsize; /* rv3d->pixsize */ +uniform int keep_size; +uniform float objscale; +uniform float pixfactor; + +in vec3 pos; +in vec4 color; +in float thickness; +in vec2 uvdata; + +out vec4 finalColor; +out float finalThickness; +out vec2 finaluvdata; + +#define TRUE 1 + +float defaultpixsize = pixsize * (1000.0 / pixfactor); + +void main(void) +{ + gl_Position = ModelViewProjectionMatrix * vec4( pos, 1.0 ); + finalColor = color; + + if (keep_size == TRUE) { + finalThickness = thickness; + } + else { + float size = (ProjectionMatrix[3][3] == 0.0) ? (thickness / (gl_Position.z * defaultpixsize)) : (thickness / defaultpixsize); + finalThickness = max(size * objscale, 1.0); + } + + finaluvdata = uvdata; +} diff --git a/source/blender/draw/engines/gpencil/shaders/gpencil_zdepth_mix_frag.glsl b/source/blender/draw/engines/gpencil/shaders/gpencil_zdepth_mix_frag.glsl new file mode 100644 index 00000000000..0983e6c4d87 --- /dev/null +++ b/source/blender/draw/engines/gpencil/shaders/gpencil_zdepth_mix_frag.glsl @@ -0,0 +1,45 @@ +in vec4 uvcoordsvar; + +out vec4 FragColor; + +uniform sampler2D strokeColor; +uniform sampler2D strokeDepth; +uniform int tonemapping; + +float srgb_to_linearrgb(float c) +{ + if (c < 0.04045) + return (c < 0.0) ? 0.0 : c * (1.0 / 12.92); + else + return pow((c + 0.055) * (1.0 / 1.055), 2.4); +} + +float linearrgb_to_srgb(float c) +{ + if (c < 0.0031308) + return (c < 0.0) ? 0.0 : c * 12.92; + else + return 1.055 * pow(c, 1.0 / 2.4) - 0.055; +} + +void main() +{ + ivec2 uv = ivec2(gl_FragCoord.xy); + float stroke_depth = texelFetch(strokeDepth, uv, 0).r; + vec4 stroke_color = texelFetch(strokeColor, uv, 0).rgba; + + /* premult alpha factor to remove double blend effects */ + if (stroke_color.a > 0) { + stroke_color = vec4(vec3(stroke_color.rgb / stroke_color.a), stroke_color.a); + } + + /* apply color correction for render only */ + if (tonemapping == 1) { + stroke_color.r = srgb_to_linearrgb(stroke_color.r); + stroke_color.g = srgb_to_linearrgb(stroke_color.g); + stroke_color.b = srgb_to_linearrgb(stroke_color.b); + } + + FragColor = stroke_color; + gl_FragDepth = stroke_depth; +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_background_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_background_lib.glsl new file mode 100644 index 00000000000..fda2fc85460 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_background_lib.glsl @@ -0,0 +1,3 @@ +vec3 background_color(WorldData world_data, float y) { + return mix(world_data.background_color_low, world_data.background_color_high, y).xyz + bayer_dither_noise(); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_cavity_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_cavity_frag.glsl new file mode 100644 index 00000000000..b52d7d31e61 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_cavity_frag.glsl @@ -0,0 +1,83 @@ +out vec4 fragColor; + +uniform sampler2D depthBuffer; +uniform sampler2D colorBuffer; +uniform sampler2D normalBuffer; +uniform usampler2D objectId; + +uniform vec2 invertedViewportSize; +uniform mat4 WinMatrix; /* inverse WinMatrix */ + +uniform vec4 viewvecs[3]; +uniform vec4 ssao_params; +uniform vec4 ssao_settings; +uniform vec2 curvature_settings; +uniform sampler2D ssao_jitter; + +layout(std140) uniform samples_block { + vec4 ssao_samples[500]; +}; + +#define ssao_samples_num ssao_params.x +#define jitter_tilling ssao_params.yz +#define ssao_iteration ssao_params.w + +#define ssao_distance ssao_settings.x +#define ssao_factor_cavity ssao_settings.y +#define ssao_factor_edge ssao_settings.z +#define ssao_attenuation ssao_settings.w + +vec3 get_view_space_from_depth(in vec2 uvcoords, in float depth) +{ + if (WinMatrix[3][3] == 0.0) { + /* Perspective */ + float d = 2.0 * depth - 1.0; + + float zview = -WinMatrix[3][2] / (d + WinMatrix[2][2]); + + return zview * (viewvecs[0].xyz + vec3(uvcoords, 0.0) * viewvecs[1].xyz); + } + else { + /* Orthographic */ + vec3 offset = vec3(uvcoords, depth); + + return viewvecs[0].xyz + offset * viewvecs[1].xyz; + } +} + +/* forward declartion */ +void ssao_factors( + in float depth, in vec3 normal, in vec3 position, in vec2 screenco, + out float cavities, out float edges); + + +void main() +{ + vec2 screenco = vec2(gl_FragCoord.xy) * invertedViewportSize; + ivec2 texel = ivec2(gl_FragCoord.xy); + + float cavity = 0.0, edges = 0.0, curvature = 0.0; + +#ifdef USE_CAVITY + float depth = texelFetch(depthBuffer, texel, 0).x; + vec3 position = get_view_space_from_depth(screenco, depth); + + vec4 diffuse_color = texelFetch(colorBuffer, texel, 0); + vec3 normal_viewport = normal_decode(texelFetch(normalBuffer, texel, 0).rg); + if (diffuse_color.a == 0.0) { + normal_viewport = -normal_viewport; + } + + + ssao_factors(depth, normal_viewport, position, screenco, cavity, edges); +#endif + +#ifdef USE_CURVATURE + curvature = calculate_curvature(objectId, normalBuffer, texel, curvature_settings.x, curvature_settings.y); +#endif + + float final_cavity_factor = clamp((1.0 - cavity) * (1.0 + edges) * (1.0 + curvature), 0.0, 4.0); + + /* Using UNORM render target so compress the range. */ + fragColor = vec4(final_cavity_factor / CAVITY_BUFFER_RANGE); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_cavity_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_cavity_lib.glsl new file mode 100644 index 00000000000..7b77139fb6c --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_cavity_lib.glsl @@ -0,0 +1,84 @@ + + +/* from The Alchemy screen-space ambient obscurance algorithm + * http://graphics.cs.williams.edu/papers/AlchemyHPG11/VV11AlchemyAO.pdf */ + +void ssao_factors( + in float depth, in vec3 normal, in vec3 position, in vec2 screenco, + out float cavities, out float edges) +{ + cavities = edges = 0.0; + /* early out if there is no need for SSAO */ + if (ssao_factor_cavity == 0.0 && ssao_factor_edge == 0.0) + return; + + /* take the normalized ray direction here */ + vec3 noise = texture(ssao_jitter, screenco.xy * jitter_tilling).rgb; + + /* find the offset in screen space by multiplying a point + * in camera space at the depth of the point by the projection matrix. */ + vec2 offset; + float homcoord = WinMatrix[2][3] * position.z + WinMatrix[3][3]; + offset.x = WinMatrix[0][0] * ssao_distance / homcoord; + offset.y = WinMatrix[1][1] * ssao_distance / homcoord; + /* convert from -1.0...1.0 range to 0.0..1.0 for easy use with texture coordinates */ + offset *= 0.5; + + + int num_samples = int(ssao_samples_num); + + /* Note. Putting noise usage here to put some ALU after texture fetch. */ + vec2 rotX = noise.rg; + vec2 rotY = vec2(-rotX.y, rotX.x); + + for (int x = 0; x < num_samples; x++) { + int sample_index = x + (int(ssao_iteration) * num_samples); + if (sample_index > 500) { + continue; + } + /* ssao_samples[x].xy is sample direction (normalized). + * ssao_samples[x].z is sample distance from disk center. */ + + /* Rotate with random direction to get jittered result. */ + vec2 dir_jittered = vec2(dot(ssao_samples[sample_index].xy, rotX), dot(ssao_samples[sample_index].xy, rotY)); + dir_jittered.xy *= ssao_samples[sample_index].z + noise.b; + + vec2 uvcoords = screenco.xy + dir_jittered * offset; + + if (uvcoords.x > 1.0 || uvcoords.x < 0.0 || uvcoords.y > 1.0 || uvcoords.y < 0.0) + continue; + + float depth_new = texture(depthBuffer, uvcoords).r; + + /* Handle Background case */ + bool is_background = (depth_new == 1.0); + + /* This trick provide good edge effect even if no neighboor is found. */ + vec3 pos_new = get_view_space_from_depth(uvcoords, (is_background) ? depth : depth_new); + + if (is_background) + pos_new.z -= ssao_distance; + + vec3 dir = pos_new - position; + float len = length(dir); + float f_cavities = dot(dir, normal); + float f_edge = -f_cavities; + float f_bias = 0.05 * len + 0.0001; + + float attenuation = 1.0 / (len * (1.0 + len * len * ssao_attenuation)); + + /* use minor bias here to avoid self shadowing */ + if (f_cavities > -f_bias) + cavities += f_cavities * attenuation; + + if (f_edge > f_bias) + edges += f_edge * attenuation; + } + + cavities /= ssao_samples_num; + edges /= ssao_samples_num; + + /* don't let cavity wash out the surface appearance */ + cavities = clamp(cavities * ssao_factor_cavity, 0.0, 1.0); + edges = edges * ssao_factor_edge; +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_checkerboard_depth_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_checkerboard_depth_frag.glsl new file mode 100644 index 00000000000..94fa5d51229 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_checkerboard_depth_frag.glsl @@ -0,0 +1,38 @@ + +/* 4x4 bayer matrix. */ +#define P(x) ((x + 0.5) * (1.0 / 16.0)) +const vec4 dither_mat[4] = vec4[4]( + vec4( P(0.0), P(8.0), P(2.0), P(10.0)), + vec4(P(12.0), P(4.0), P(14.0), P(6.0)), + vec4( P(3.0), P(11.0), P(1.0), P(9.0)), + vec4(P(15.0), P(7.0), P(13.0), P(5.0)) +); + +uniform float threshold = 0.5; +uniform float offset = 0.0; + +/* Noise dithering pattern + * 0 - Bayer matrix + * 1 - Interlieved gradient noise + */ +#define NOISE 1 + +void main() +{ +#if NOISE == 0 + ivec2 tx = ivec2(gl_FragCoord.xy) % 4; + float noise = dither_mat[tx.x][tx.y]; +#elif NOISE == 1 + /* Interlieved gradient noise by Jorge Jimenez + * http://www.iryoku.com/next-generation-post-processing-in-call-of-duty-advanced-warfare */ + float noise = fract(offset + 52.9829189 * fract(0.06711056 * gl_FragCoord.x + 0.00583715 * gl_FragCoord.y)); +#else +#error +#endif + + if (noise > threshold) { + discard; + } else { + gl_FragDepth = 1.0; + } +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl new file mode 100644 index 00000000000..982c3821030 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_common_lib.glsl @@ -0,0 +1,123 @@ +#define NO_OBJECT_ID uint(0) +#define EPSILON 0.00001 +#define M_PI 3.14159265358979323846 + +#define CAVITY_BUFFER_RANGE 4.0 + +/* 4x4 bayer matrix prepared for 8bit UNORM precision error. */ +#define P(x) (((x + 0.5) * (1.0 / 16.0) - 0.5) * (1.0 / 255.0)) +const vec4 dither_mat4x4[4] = vec4[4]( + vec4( P(0.0), P(8.0), P(2.0), P(10.0)), + vec4(P(12.0), P(4.0), P(14.0), P(6.0)), + vec4( P(3.0), P(11.0), P(1.0), P(9.0)), + vec4(P(15.0), P(7.0), P(13.0), P(5.0)) +); + +float bayer_dither_noise() { + ivec2 tx1 = ivec2(gl_FragCoord.xy) % 4; + ivec2 tx2 = ivec2(gl_FragCoord.xy) % 2; + return dither_mat4x4[tx1.x][tx1.y]; +} + +/* From http://aras-p.info/texts/CompactNormalStorage.html + * Using Method #4: Spheremap Transform */ +vec3 normal_decode(vec2 enc) +{ + vec2 fenc = enc.xy * 4.0 - 2.0; + float f = dot(fenc, fenc); + float g = sqrt(1.0 - f / 4.0); + vec3 n; + n.xy = fenc*g; + n.z = 1 - f / 2; + return n; +} + +/* From http://aras-p.info/texts/CompactNormalStorage.html + * Using Method #4: Spheremap Transform */ +vec2 normal_encode(vec3 n) +{ + float p = sqrt(n.z * 8.0 + 8.0); + return vec2(n.xy / p + 0.5); +} + +void fresnel(vec3 I, vec3 N, float ior, out float kr) +{ + float cosi = clamp(dot(I, N), -1.0, 1.0); + float etai = 1.0; + float etat = ior; + if (cosi > 0) { + etat = 1.0; + etai = ior; + } + + // Compute sini using Snell's law + float sint = etai / etat * sqrt(max(0.0, 1.0 - cosi * cosi)); + // Total internal reflection + if (sint >= 1) { + kr = 1; + } + else { + float cost = sqrt(max(0.0, 1.0 - sint * sint)); + cosi = abs(cosi); + float Rs = ((etat * cosi) - (etai * cost)) / ((etat * cosi) + (etai * cost)); + float Rp = ((etai * cosi) - (etat * cost)) / ((etai * cosi) + (etat * cost)); + kr = (Rs * Rs + Rp * Rp) / 2; + } + // As a consequence of the conservation of energy, transmittance is given by: + // kt = 1 - kr; +} + +float calculate_transparent_weight(float z, float alpha) +{ +#if 0 + /* Eq 10 : Good for surfaces with varying opacity (like particles) */ + float a = min(1.0, alpha * 10.0) + 0.01; + float b = -gl_FragCoord.z * 0.95 + 1.0; + float w = a * a * a * 3e2 * b * b * b; +#else + /* Eq 7 put more emphasis on surfaces closer to the view. */ + // float w = 10.0 / (1e-5 + pow(abs(z) / 5.0, 2.0) + pow(abs(z) / 200.0, 6.0)); /* Eq 7 */ + // float w = 10.0 / (1e-5 + pow(abs(z) / 10.0, 3.0) + pow(abs(z) / 200.0, 6.0)); /* Eq 8 */ + // float w = 10.0 / (1e-5 + pow(abs(z) / 200.0, 4.0)); /* Eq 9 */ + /* Same as eq 7, but optimized. */ + float a = abs(z) / 5.0; + float b = abs(z) / 200.0; + b *= b; + float w = 10.0 / ((1e-5 + a * a) + b * (b * b)); /* Eq 7 */ +#endif + return alpha * clamp(w, 1e-2, 3e2); +} + +/* Special function only to be used with calculate_transparent_weight(). */ +float linear_zdepth(float depth, vec4 viewvecs[3], mat4 proj_mat) +{ + if (proj_mat[3][3] == 0.0) { + float d = 2.0 * depth - 1.0; + return -proj_mat[3][2] / (d + proj_mat[2][2]); + } + else { + /* Return depth from near plane. */ + return depth * viewvecs[1].z; + } +} + +vec3 view_vector_from_screen_uv(vec2 uv, vec4 viewvecs[3], mat4 proj_mat) +{ + return (proj_mat[3][3] == 0.0) + ? normalize(viewvecs[0].xyz + vec3(uv, 0.0) * viewvecs[1].xyz) + : vec3(0.0, 0.0, 1.0); +} + +vec2 matcap_uv_compute(vec3 I, vec3 N, bool flipped) +{ + /* Quick creation of an orthonormal basis */ + float a = 1.0 / (1.0 + I.z); + float b = -I.x * I.y * a; + vec3 b1 = vec3(1.0 - I.x * I.x * a, b, -I.x); + vec3 b2 = vec3(b, 1.0 - I.y * I.y * a, -I.y); + vec2 matcap_uv = vec2(dot(b1, N), dot(b2, N)); + if (flipped) { + matcap_uv.x = -matcap_uv.x; + } + return matcap_uv * 0.496 + 0.5; +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_curvature_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_curvature_lib.glsl new file mode 100644 index 00000000000..53315b8c132 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_curvature_lib.glsl @@ -0,0 +1,43 @@ +#ifndef CURVATURE_OFFSET +# define CURVATURE_OFFSET 1 +#endif + +float curvature_soft_clamp(float curvature, float control) +{ + if (curvature < 0.5 / control) { + return curvature * (1.0 - curvature * control); + } + return 0.25 / control; +} + +float calculate_curvature(usampler2D objectId, sampler2D normalBuffer, ivec2 texel, float ridge, float valley) +{ + uint object_up = texelFetchOffset(objectId, texel, 0, ivec2(0, CURVATURE_OFFSET)).r; + uint object_down = texelFetchOffset(objectId, texel, 0, ivec2(0, -CURVATURE_OFFSET)).r; + uint object_left = texelFetchOffset(objectId, texel, 0, ivec2(-CURVATURE_OFFSET, 0)).r; + uint object_right = texelFetchOffset(objectId, texel, 0, ivec2( CURVATURE_OFFSET, 0)).r; + + if((object_up != object_down) || (object_right != object_left)) { + return 0.0; + } + + vec2 normal_up = texelFetchOffset(normalBuffer, texel, 0, ivec2(0, CURVATURE_OFFSET)).rg; + vec2 normal_down = texelFetchOffset(normalBuffer, texel, 0, ivec2(0, -CURVATURE_OFFSET)).rg; + vec2 normal_left = texelFetchOffset(normalBuffer, texel, 0, ivec2(-CURVATURE_OFFSET, 0)).rg; + vec2 normal_right = texelFetchOffset(normalBuffer, texel, 0, ivec2( CURVATURE_OFFSET, 0)).rg; + +#ifdef WORKBENCH_ENCODE_NORMALS + normal_up = normal_decode(normal_up ).rg; + normal_down = normal_decode(normal_down ).rg; + normal_left = normal_decode(normal_left ).rg; + normal_right = normal_decode(normal_right).rg; +#endif + + float normal_diff = ((normal_up.g - normal_down.g) + (normal_right.r - normal_left.r)); + + if (normal_diff < 0) { + return -2.0 * curvature_soft_clamp(-normal_diff, valley); + } + + return 2.0 * curvature_soft_clamp(normal_diff, ridge); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_data_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_data_lib.glsl new file mode 100644 index 00000000000..fd058d45cf6 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_data_lib.glsl @@ -0,0 +1,21 @@ +struct LightData { + vec4 direction; + vec4 specular_color; + vec4 diffuse_color_wrap; /* rgb: diffuse col a: wrapped lighting factor */ +}; + +struct WorldData { + vec3 spherical_harmonics_coefs[STUDIOLIGHT_SH_MAX_COMPONENTS]; + vec4 background_color_low; + vec4 background_color_high; + vec4 object_outline_color; + vec4 shadow_direction_vs; + LightData lights[4]; + vec4 ambient_color; + int num_lights; + int matcap_orientation; + float background_alpha; + float curvature_ridge; + float curvature_valley; + int pad[3]; +}; diff --git a/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl new file mode 100644 index 00000000000..310169bdf5d --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_deferred_composite_frag.glsl @@ -0,0 +1,111 @@ +out vec4 fragColor; + +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrixInverse; + +uniform usampler2D objectId; +uniform sampler2D colorBuffer; +uniform sampler2D specularBuffer; +uniform sampler2D normalBuffer; +/* normalBuffer contains viewport normals */ +uniform sampler2D cavityBuffer; +uniform sampler2D matcapImage; + +uniform vec2 invertedViewportSize; +uniform vec4 viewvecs[3]; +uniform float shadowMultiplier; +uniform float lightMultiplier; +uniform float shadowShift = 0.1; + +layout(std140) uniform world_block { + WorldData world_data; +}; + +void main() +{ + ivec2 texel = ivec2(gl_FragCoord.xy); + vec2 uv_viewport = gl_FragCoord.xy * invertedViewportSize; + uint object_id = texelFetch(objectId, texel, 0).r; + +#ifndef V3D_SHADING_OBJECT_OUTLINE + if (object_id == NO_OBJECT_ID) { + fragColor = vec4(background_color(world_data, uv_viewport.y), world_data.background_alpha); + return; + } +#else /* !V3D_SHADING_OBJECT_OUTLINE */ + float object_outline = calculate_object_outline(objectId, texel, object_id); + + if (object_id == NO_OBJECT_ID) { + vec3 background = background_color(world_data, uv_viewport.y); + if (object_outline == 0.0) { + fragColor = vec4(background, world_data.background_alpha); + } + else { + /* Do correct alpha blending. */ + vec4 background_color = vec4(background, 1.0) * world_data.background_alpha; + vec4 outline_color = vec4(world_data.object_outline_color.rgb, 1.0); + fragColor = mix(outline_color, background_color, object_outline); + fragColor = vec4(fragColor.rgb / max(1e-8, fragColor.a), fragColor.a); + } + return; + } +#endif /* !V3D_SHADING_OBJECT_OUTLINE */ + + vec4 diffuse_color = texelFetch(colorBuffer, texel, 0); + +/* Do we need normals */ +#ifdef NORMAL_VIEWPORT_PASS_ENABLED +# ifdef WORKBENCH_ENCODE_NORMALS + vec3 normal_viewport = normal_decode(texelFetch(normalBuffer, texel, 0).rg); + if (diffuse_color.a == 0.0) { + normal_viewport = -normal_viewport; + } +# else /* WORKBENCH_ENCODE_NORMALS */ + vec3 normal_viewport = texelFetch(normalBuffer, texel, 0).rgb; +# endif /* WORKBENCH_ENCODE_NORMALS */ +#endif + + vec3 I_vs = view_vector_from_screen_uv(uv_viewport, viewvecs, ProjectionMatrix); + + /* -------- SHADING --------- */ +#ifdef V3D_LIGHTING_FLAT + vec3 shaded_color = diffuse_color.rgb; + +#elif defined(V3D_LIGHTING_MATCAP) + bool flipped = world_data.matcap_orientation != 0; + vec2 matcap_uv = matcap_uv_compute(I_vs, normal_viewport, flipped); + vec3 matcap = textureLod(matcapImage, matcap_uv, 0.0).rgb; + vec3 shaded_color = matcap * diffuse_color.rgb; + +#elif defined(V3D_LIGHTING_STUDIO) + +# ifdef V3D_SHADING_SPECULAR_HIGHLIGHT + vec4 specular_data = texelFetch(specularBuffer, texel, 0); +# else + vec4 specular_data = vec4(0.0); +# endif + vec3 shaded_color = get_world_lighting(world_data, + diffuse_color.rgb, specular_data.rgb, specular_data.a, + normal_viewport, I_vs); +#endif + + /* -------- POST EFFECTS --------- */ +#ifdef WB_CAVITY + /* Using UNORM texture so decompress the range */ + shaded_color *= texelFetch(cavityBuffer, texel, 0).r * CAVITY_BUFFER_RANGE; +#endif + +#ifdef V3D_SHADING_SHADOW + float light_factor = -dot(normal_viewport, world_data.shadow_direction_vs.xyz); + /* The step function might be ok for meshes but it's + * clearly not the case for hairs. Do smoothstep in this case. */ + float shadow_mix = smoothstep(1.0, shadowShift, light_factor); + shaded_color *= mix(lightMultiplier, shadowMultiplier, shadow_mix); +#endif + +#ifdef V3D_SHADING_OBJECT_OUTLINE + shaded_color = mix(world_data.object_outline_color.rgb, shaded_color, object_outline); +#endif + + fragColor = vec4(shaded_color, 1.0); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_effect_fxaa_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_effect_fxaa_frag.glsl new file mode 100644 index 00000000000..4ffd20c2839 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_effect_fxaa_frag.glsl @@ -0,0 +1,19 @@ + +in vec4 uvcoordsvar; + +out vec4 FragColor; + +uniform sampler2D colorBuffer; +uniform vec2 invertedViewportSize; + +void main() +{ + FragColor = FxaaPixelShader( + uvcoordsvar.st, + colorBuffer, + invertedViewportSize, + 1.0, + 0.166, + 0.0833 + ); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl new file mode 100644 index 00000000000..1da1b2ad13c --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_effect_taa_frag.glsl @@ -0,0 +1,14 @@ +uniform sampler2D historyBuffer; +uniform sampler2D colorBuffer; + +out vec4 colorOutput; + +uniform float mixFactor; + +void main() +{ + ivec2 texel = ivec2(gl_FragCoord.xy); + vec4 color_buffer = texelFetch(colorBuffer, texel, 0); + vec4 history_buffer = texelFetch(historyBuffer, texel, 0); + colorOutput = mix(history_buffer, color_buffer, mixFactor); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_forward_composite_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_forward_composite_frag.glsl new file mode 100644 index 00000000000..1d9f37274bd --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_forward_composite_frag.glsl @@ -0,0 +1,37 @@ +out vec4 fragColor; + +uniform usampler2D objectId; +uniform sampler2D transparentAccum; +uniform sampler2D transparentRevealage; +uniform vec2 invertedViewportSize; + +layout(std140) uniform world_block { + WorldData world_data; +}; + +void main() +{ + ivec2 texel = ivec2(gl_FragCoord.xy); + vec2 uv_viewport = gl_FragCoord.xy * invertedViewportSize; + uint object_id = texelFetch(objectId, texel, 0).r; + + /* Listing 4 */ + vec4 trans_accum = texelFetch(transparentAccum, texel, 0); + float trans_revealage = trans_accum.a; + trans_accum.a = texelFetch(transparentRevealage, texel, 0).r; + +#ifdef V3D_SHADING_OBJECT_OUTLINE + float outline = calculate_object_outline(objectId, texel, object_id); +#else /* V3D_SHADING_OBJECT_OUTLINE */ + float outline = 1.0; +#endif /* V3D_SHADING_OBJECT_OUTLINE */ + vec3 bg_color = background_color(world_data, uv_viewport.y); + + /* TODO: Bypass the whole shader if there is no xray pass and no outline pass. */ + vec3 trans_color = trans_accum.rgb / clamp(trans_accum.a, 1e-4, 5e4); + vec3 color = mix(trans_color, bg_color, trans_revealage); + + color = mix(world_data.object_outline_color.rgb, color, outline); + + fragColor = vec4(color, 1.0); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_forward_depth_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_forward_depth_frag.glsl new file mode 100644 index 00000000000..9380044f2b9 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_forward_depth_frag.glsl @@ -0,0 +1,20 @@ +uniform int object_id = 0; +layout(location=0) out uint objectId; +uniform float ImageTransparencyCutoff = 0.1; +#ifdef V3D_SHADING_TEXTURE_COLOR +uniform sampler2D image; + +in vec2 uv_interp; +#endif + +void main() +{ +#ifdef V3D_SHADING_TEXTURE_COLOR + vec4 diffuse_color = texture(image, uv_interp); + if (diffuse_color.a < ImageTransparencyCutoff) { + discard; + } +#endif + + objectId = uint(object_id); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl new file mode 100644 index 00000000000..c00edb06100 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_forward_transparent_accum_frag.glsl @@ -0,0 +1,78 @@ +#ifdef V3D_SHADING_TEXTURE_COLOR +uniform sampler2D image; +uniform float ImageTransparencyCutoff = 0.1; + +#endif +uniform mat4 ProjectionMatrix; +uniform mat4 ViewMatrixInverse; +uniform float alpha = 0.5; +uniform vec2 invertedViewportSize; +uniform vec4 viewvecs[3]; + +uniform vec4 materialDiffuseColor; +uniform vec4 materialSpecularColor; +uniform float materialRoughness; + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED +in vec3 normal_viewport; +#endif /* NORMAL_VIEWPORT_PASS_ENABLED */ +#ifdef V3D_SHADING_TEXTURE_COLOR +in vec2 uv_interp; +#endif +#ifdef V3D_LIGHTING_MATCAP +uniform sampler2D matcapImage; +#endif + +layout(std140) uniform world_block { + WorldData world_data; +}; + +layout(location=0) out vec4 transparentAccum; +layout(location=1) out float revealageAccum; /* revealage actually stored in transparentAccum.a */ + +void main() +{ + vec4 diffuse_color; + +#ifdef V3D_SHADING_TEXTURE_COLOR + diffuse_color = texture(image, uv_interp); + if (diffuse_color.a < ImageTransparencyCutoff) { + discard; + } +#else + diffuse_color = materialDiffuseColor; +#endif /* V3D_SHADING_TEXTURE_COLOR */ + + vec2 uv_viewport = gl_FragCoord.xy * invertedViewportSize; + vec3 I_vs = view_vector_from_screen_uv(uv_viewport, viewvecs, ProjectionMatrix); + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED + vec3 nor = normalize(normal_viewport); +#endif + + /* -------- SHADING --------- */ +#ifdef V3D_LIGHTING_FLAT + vec3 shaded_color = diffuse_color.rgb; + +#elif defined(V3D_LIGHTING_MATCAP) + bool flipped = world_data.matcap_orientation != 0; + vec2 matcap_uv = matcap_uv_compute(I_vs, nor, flipped); + vec3 matcap = textureLod(matcapImage, matcap_uv, 0.0).rgb; + vec3 shaded_color = matcap * diffuse_color.rgb; + +#elif defined(V3D_LIGHTING_STUDIO) + vec3 shaded_color = get_world_lighting(world_data, + diffuse_color.rgb, materialSpecularColor.rgb, materialRoughness, + nor, I_vs); +#endif + + /* Based on : + * McGuire and Bavoil, Weighted Blended Order-Independent Transparency, Journal of + * Computer Graphics Techniques (JCGT), vol. 2, no. 2, 122–141, 2013 + */ + /* Listing 4 */ + float z = linear_zdepth(gl_FragCoord.z, viewvecs, ProjectionMatrix); + float weight = calculate_transparent_weight(z, alpha); + transparentAccum = vec4(shaded_color * weight, alpha); + revealageAccum = weight; +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_ghost_resolve_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_ghost_resolve_frag.glsl new file mode 100644 index 00000000000..59f2df11086 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_ghost_resolve_frag.glsl @@ -0,0 +1,13 @@ +uniform sampler2D depthBuffer; + +void main(void) +{ + float depth = texelFetch(depthBuffer, ivec2(gl_FragCoord.xy), 0).r; + + /* background, discard */ + if (depth >= 1.0) { + discard; + } + + gl_FragDepth = depth; +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_object_outline_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_object_outline_lib.glsl new file mode 100644 index 00000000000..3e925ba023f --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_object_outline_lib.glsl @@ -0,0 +1,12 @@ +#define OBJECT_OUTLINE_OFFSET 1 + +float calculate_object_outline(usampler2D objectId, ivec2 texel, uint object_id) +{ + uvec4 oid_offset = uvec4( + texelFetchOffset(objectId, texel, 0, ivec2(0, OBJECT_OUTLINE_OFFSET)).r, + texelFetchOffset(objectId, texel, 0, ivec2(0, -OBJECT_OUTLINE_OFFSET)).r, + texelFetchOffset(objectId, texel, 0, ivec2(-OBJECT_OUTLINE_OFFSET, 0)).r, + texelFetchOffset(objectId, texel, 0, ivec2( OBJECT_OUTLINE_OFFSET, 0)).r); + + return dot(vec4(equal(uvec4(object_id), oid_offset)), vec4(0.25)); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_prepass_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_prepass_frag.glsl new file mode 100644 index 00000000000..5f622b00bca --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_prepass_frag.glsl @@ -0,0 +1,79 @@ +uniform int object_id = 0; + +uniform vec4 materialDiffuseColor; +uniform vec4 materialSpecularColor; +uniform float materialRoughness; + +#ifdef V3D_SHADING_TEXTURE_COLOR +uniform sampler2D image; +uniform float ImageTransparencyCutoff = 0.1; + +#endif + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED +in vec3 normal_viewport; +#endif /* NORMAL_VIEWPORT_PASS_ENABLED */ + +#ifdef V3D_SHADING_TEXTURE_COLOR +in vec2 uv_interp; +#endif /* V3D_SHADING_TEXTURE_COLOR */ + +#ifdef HAIR_SHADER +flat in float hair_rand; +#endif + +layout(location=0) out uint objectId; +layout(location=1) out vec4 diffuseColor; +#ifdef V3D_SHADING_SPECULAR_HIGHLIGHT +layout(location=2) out vec4 specularColor; +#endif +#ifdef NORMAL_VIEWPORT_PASS_ENABLED +# ifdef WORKBENCH_ENCODE_NORMALS +layout(location=3) out vec2 normalViewport; +# else /* WORKBENCH_ENCODE_NORMALS */ +layout(location=3) out vec3 normalViewport; +# endif /* WORKBENCH_ENCODE_NORMALS */ +#endif /* NORMAL_VIEWPORT_PASS_ENABLED */ + +void main() +{ + objectId = uint(object_id); + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED + vec3 n = (gl_FrontFacing) ? normal_viewport : -normal_viewport; + n = normalize(n); +#endif + +#ifdef V3D_SHADING_TEXTURE_COLOR + diffuseColor = texture(image, uv_interp); + if (diffuseColor.a < ImageTransparencyCutoff) { + discard; + } +#else + diffuseColor = vec4(materialDiffuseColor.rgb, 0.0); +#endif /* V3D_SHADING_TEXTURE_COLOR */ + +#ifdef HAIR_SHADER + float hair_color_variation = hair_rand * 0.1; + diffuseColor.rgb = clamp(diffuseColor.rgb - hair_color_variation, 0.0, 1.0); +#endif + +#ifdef V3D_SHADING_SPECULAR_HIGHLIGHT + specularColor = vec4(materialSpecularColor.rgb, materialRoughness); +# ifdef HAIR_SHADER + specularColor.rgb = clamp(specularColor.rgb - hair_color_variation, 0.0, 1.0); +# endif +#endif + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED +# ifdef WORKBENCH_ENCODE_NORMALS + diffuseColor.a = float(gl_FrontFacing); + normalViewport = normal_encode(n); +# else /* WORKBENCH_ENCODE_NORMALS */ + normalViewport = n; +# endif /* WORKBENCH_ENCODE_NORMALS */ +# ifdef HAIR_SHADER + diffuseColor.a = 0.5; +# endif +#endif /* NORMAL_VIEWPORT_PASS_ENABLED */ +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_prepass_vert.glsl b/source/blender/draw/engines/workbench/shaders/workbench_prepass_vert.glsl new file mode 100644 index 00000000000..62040da8524 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_prepass_vert.glsl @@ -0,0 +1,70 @@ +uniform mat4 ModelViewProjectionMatrix; +uniform mat4 ModelMatrixInverse; +uniform mat4 ProjectionMatrix; +uniform mat4 ViewProjectionMatrix; +uniform mat4 ViewMatrixInverse; +uniform mat3 NormalMatrix; + +#ifndef HAIR_SHADER +in vec3 pos; +in vec3 nor; +in vec2 uv; +#else /* HAIR_SHADER */ +# ifdef V3D_SHADING_TEXTURE_COLOR +uniform samplerBuffer u; /* active texture layer */ +# endif +flat out float hair_rand; +#endif /* HAIR_SHADER */ + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED +out vec3 normal_viewport; +#endif + +#ifdef V3D_SHADING_TEXTURE_COLOR +out vec2 uv_interp; +#endif + +/* From http://libnoise.sourceforge.net/noisegen/index.html */ +float integer_noise(int n) +{ + n = (n >> 13) ^ n; + int nn = (n * (n * n * 60493 + 19990303) + 1376312589) & 0x7fffffff; + return (float(nn) / 1073741824.0); +} + +void main() +{ +#ifdef HAIR_SHADER +# ifdef V3D_SHADING_TEXTURE_COLOR + vec2 uv = hair_get_customdata_vec2(u); +# endif + float time, thick_time, thickness; + vec3 pos, tan, binor; + hair_get_pos_tan_binor_time( + (ProjectionMatrix[3][3] == 0.0), + ModelMatrixInverse, + ViewMatrixInverse[3].xyz, ViewMatrixInverse[2].xyz, + pos, tan, binor, time, thickness, thick_time); + /* To "simulate" anisotropic shading, randomize hair normal per strand. */ + hair_rand = integer_noise(hair_get_strand_id()); + tan = normalize(tan); + vec3 nor = normalize(cross(binor, tan)); + nor = normalize(mix(nor, -tan, hair_rand * 0.10)); + float cos_theta = (hair_rand*2.0 - 1.0) * 0.20; + float sin_theta = sqrt(max(0.0, 1.0f - cos_theta*cos_theta)); + nor = nor * sin_theta + binor * cos_theta; + gl_Position = ViewProjectionMatrix * vec4(pos, 1.0); +#else + gl_Position = ModelViewProjectionMatrix * vec4(pos, 1.0); +#endif +#ifdef V3D_SHADING_TEXTURE_COLOR + uv_interp = uv; +#endif + +#ifdef NORMAL_VIEWPORT_PASS_ENABLED + normal_viewport = NormalMatrix * nor; +# ifndef HAIR_SHADER + normal_viewport = normalize(normal_viewport); +# endif +#endif +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_shadow_caps_geom.glsl b/source/blender/draw/engines/workbench/shaders/workbench_shadow_caps_geom.glsl new file mode 100644 index 00000000000..d8c8f22ed1c --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_shadow_caps_geom.glsl @@ -0,0 +1,85 @@ +#extension GL_ARB_gpu_shader5 : enable + +#ifdef GL_ARB_gpu_shader5 +#define USE_INVOC_EXT +#endif + +#ifdef DOUBLE_MANIFOLD +# ifdef USE_INVOC_EXT +# define invoc_len 2 +# else +# define vert_len 6 +# endif +#else +# ifdef USE_INVOC_EXT +# define invoc_len 2 +# else +# define vert_len 6 +# endif +#endif + +#ifdef USE_INVOC_EXT +layout(triangles, invocations = invoc_len) in; +layout(triangle_strip, max_vertices = 3) out; +#else +layout(triangles) in; +layout(triangle_strip, max_vertices = vert_len) out; +#endif + +uniform vec3 lightDirection = vec3(0.57, 0.57, -0.57); + +in VertexData { + vec3 pos; /* local position */ + vec4 frontPosition; /* final ndc position */ + vec4 backPosition; +} vData[]; + +vec4 get_pos(int v, bool backface) +{ + return (backface) ? vData[v].backPosition : vData[v].frontPosition; +} + +void emit_cap(const bool front, bool reversed) +{ + if (front) { + gl_Position = vData[0].frontPosition; EmitVertex(); + gl_Position = vData[reversed ? 2 : 1].frontPosition; EmitVertex(); + gl_Position = vData[reversed ? 1 : 2].frontPosition; EmitVertex(); + } + else { + gl_Position = vData[0].backPosition; EmitVertex(); + gl_Position = vData[reversed ? 1 : 2].backPosition; EmitVertex(); + gl_Position = vData[reversed ? 2 : 1].backPosition; EmitVertex(); + } + EndPrimitive(); +} + +void main() +{ + vec3 v10 = vData[0].pos - vData[1].pos; + vec3 v12 = vData[2].pos - vData[1].pos; + + vec3 n = cross(v12, v10); + float facing = dot(n, lightDirection); + + bool backface = facing > 0.0; + +#ifdef DOUBLE_MANIFOLD + /* In case of non manifold geom, we only increase/decrease + * the stencil buffer by one but do every faces as they were facing the light. */ + bool invert = backface; +#else + const bool invert = false; + if (!backface) { +#endif +#ifdef USE_INVOC_EXT + bool do_front = (gl_InvocationID & 1) == 0; + emit_cap(do_front, invert); +#else + emit_cap(true, invert); + emit_cap(false, invert); +#endif +#ifndef DOUBLE_MANIFOLD + } +#endif +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_shadow_debug_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_shadow_debug_frag.glsl new file mode 100644 index 00000000000..ceb33e77f2b --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_shadow_debug_frag.glsl @@ -0,0 +1,14 @@ + +out vec4 fragColor; + +void main() +{ + const float intensity = 0.25; +#ifdef SHADOW_PASS + fragColor = vec4((gl_FrontFacing) ? vec3(intensity, -intensity, 0.0) + : vec3(-intensity, intensity, 0.0), 1.0); +#else + fragColor = vec4((gl_FrontFacing) ? vec3(intensity, intensity, -intensity) + : vec3(-intensity, -intensity, intensity), 1.0); +#endif +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_shadow_geom.glsl b/source/blender/draw/engines/workbench/shaders/workbench_shadow_geom.glsl new file mode 100644 index 00000000000..7418f86a58e --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_shadow_geom.glsl @@ -0,0 +1,118 @@ +#extension GL_ARB_gpu_shader5 : enable + +#ifdef GL_ARB_gpu_shader5 +#define USE_INVOC_EXT +#endif + +#ifdef DOUBLE_MANIFOLD +# ifdef USE_INVOC_EXT +# define invoc_len 2 +# else +# define vert_len 8 +# endif +#else +# ifdef USE_INVOC_EXT +# define invoc_len 1 +# else +# define vert_len 4 +# endif +#endif + +#ifdef USE_INVOC_EXT +layout(lines_adjacency, invocations = invoc_len) in; +layout(triangle_strip, max_vertices = 4) out; +#else +layout(lines_adjacency) in; +layout(triangle_strip, max_vertices = vert_len) out; +#endif + +uniform vec3 lightDirection = vec3(0.57, 0.57, -0.57); + +in VertexData { + vec3 pos; /* local position */ + vec4 frontPosition; /* final ndc position */ + vec4 backPosition; +} vData[]; + +#define DEGENERATE_THRESHOLD 1e-12 + +#define len_sqr(a) dot(a, a) + +void extrude_edge(bool invert) +{ + /* Reverse order if backfacing the light. */ + ivec2 idx = (invert) ? ivec2(1, 2) : ivec2(2, 1); + gl_Position = vData[idx.x].frontPosition; EmitVertex(); + gl_Position = vData[idx.y].frontPosition; EmitVertex(); + gl_Position = vData[idx.x].backPosition; EmitVertex(); + gl_Position = vData[idx.y].backPosition; EmitVertex(); + EndPrimitive(); +} + +void main() +{ + vec3 v10 = vData[0].pos - vData[1].pos; + vec3 v12 = vData[2].pos - vData[1].pos; + vec3 v13 = vData[3].pos - vData[1].pos; + +#ifdef DEGENERATE_THRESHOLD + vec3 v20 = vData[0].pos - vData[2].pos; + vec3 v23 = vData[3].pos - vData[2].pos; + + vec4 edges_lensqr = vec4(len_sqr(v10), len_sqr(v13), len_sqr(v20), len_sqr(v23)); + bvec4 degen_edges = lessThan(edges_lensqr, vec4(DEGENERATE_THRESHOLD)); + + /* Both triangles are degenerate, abort. */ + if (any(degen_edges.xz) && any(degen_edges.yw)) + return; +#endif + + vec3 n1 = cross(v12, v10); + vec3 n2 = cross(v13, v12); + vec2 facing = vec2(dot(n1, lightDirection), + dot(n2, lightDirection)); + + /* WATCH: maybe unpredictable in some cases. */ + bool is_manifold = any(notEqual(vData[0].pos, vData[3].pos)); + + bvec2 backface = greaterThan(facing, vec2(0.0)); + +#ifdef DEGENERATE_THRESHOLD +# ifndef DOUBLE_MANIFOLD + /* If the mesh is known to be manifold and we don't use double count, + * only create an quad if the we encounter a facing geom. */ + if ((any(degen_edges.xz) && backface.y) || + (any(degen_edges.yw) && backface.x)) + return; +# endif + + /* If one of the 2 triangles is degenerate, replace edge by a non-manifold one. */ + backface.x = (any(degen_edges.xz)) ? !backface.y : backface.x; + backface.y = (any(degen_edges.yw)) ? !backface.x : backface.y; + is_manifold = (any(degen_edges)) ? false : is_manifold; +#endif + + /* If both faces face the same direction it's not an outline edge. */ + if (backface.x == backface.y) + return; + +#ifdef USE_INVOC_EXT + if (gl_InvocationID == 0) { + extrude_edge(backface.x); + } + else if (is_manifold) { +# ifdef DOUBLE_MANIFOLD + /* Increment/Decrement twice for manifold edges. */ + extrude_edge(backface.x); +# endif + } +#else + extrude_edge(backface.x); + if (is_manifold) { +# ifdef DOUBLE_MANIFOLD + /* Increment/Decrement twice for manifold edges. */ + extrude_edge(backface.x); +# endif + } +#endif +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_shadow_vert.glsl b/source/blender/draw/engines/workbench/shaders/workbench_shadow_vert.glsl new file mode 100644 index 00000000000..50a721f948f --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_shadow_vert.glsl @@ -0,0 +1,21 @@ +#define INFINITE 1000.0 + +uniform mat4 ModelViewProjectionMatrix; + +uniform vec3 lightDirection = vec3(0.57, 0.57, -0.57); +uniform float lightDistance = 1e4; + +in vec3 pos; + +out VertexData { + vec3 pos; /* local position */ + vec4 frontPosition; /* final ndc position */ + vec4 backPosition; +} vData; + +void main() +{ + vData.pos = pos; + vData.frontPosition = ModelViewProjectionMatrix * vec4(pos, 1.0); + vData.backPosition = ModelViewProjectionMatrix * vec4(pos + lightDirection * lightDistance, 1.0); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_volume_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_volume_frag.glsl new file mode 100644 index 00000000000..0d2d2187a85 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_volume_frag.glsl @@ -0,0 +1,248 @@ + +uniform mat4 ProjectionMatrix; +uniform mat4 ModelMatrixInverse; +uniform mat4 ModelViewMatrixInverse; +uniform mat4 ModelMatrix; +uniform vec3 OrcoTexCoFactors[2]; + +uniform sampler2D depthBuffer; + +uniform sampler3D densityTexture; +uniform sampler3D shadowTexture; +uniform sampler3D flameTexture; +uniform sampler1D flameColorTexture; +uniform sampler1D transferTexture; + +uniform int samplesLen = 256; +uniform float noiseOfs = 0.0f; +uniform float stepLength; /* Step length in local space. */ +uniform float densityScale; /* Simple Opacity multiplicator. */ +uniform vec4 viewvecs[3]; + +uniform float slicePosition; +uniform int sliceAxis; /* -1 is no slice, 0 is X, 1 is Y, 2 is Z. */ + +#ifdef VOLUME_SLICE +in vec3 localPos; +#endif + +out vec4 fragColor; + +#define M_PI 3.1415926535897932 /* pi */ + +float phase_function_isotropic() +{ + return 1.0 / (4.0 * M_PI); +} + +float get_view_z_from_depth(float depth) +{ + if (ProjectionMatrix[3][3] == 0.0) { + float d = 2.0 * depth - 1.0; + return -ProjectionMatrix[3][2] / (d + ProjectionMatrix[2][2]); + } + else { + return viewvecs[0].z + depth * viewvecs[1].z; + } +} + +vec3 get_view_space_from_depth(vec2 uvcoords, float depth) +{ + if (ProjectionMatrix[3][3] == 0.0) { + return vec3(viewvecs[0].xy + uvcoords * viewvecs[1].xy, 1.0) * get_view_z_from_depth(depth); + } + else { + return viewvecs[0].xyz + vec3(uvcoords, depth) * viewvecs[1].xyz; + } +} + +float max_v3(vec3 v) { return max(v.x, max(v.y, v.z)); } + +float line_unit_box_intersect_dist(vec3 lineorigin, vec3 linedirection) +{ + /* https://seblagarde.wordpress.com/2012/09/29/image-based-lighting-approaches-and-parallax-corrected-cubemap/ */ + vec3 firstplane = (vec3( 1.0) - lineorigin) / linedirection; + vec3 secondplane = (vec3(-1.0) - lineorigin) / linedirection; + vec3 furthestplane = min(firstplane, secondplane); + return max_v3(furthestplane); +} + +#define sample_trilinear(ima, co) texture(ima, co) + +vec4 sample_tricubic(sampler3D ima, vec3 co) +{ + vec3 tex_size = vec3(textureSize(ima, 0).xyz); + + co *= tex_size; + /* texel center */ + vec3 tc = floor(co - 0.5) + 0.5; + vec3 f = co - tc; + vec3 f2 = f * f; + vec3 f3 = f2 * f; + /* Bspline coefs (optimized) */ + vec3 w3 = f3 / 6.0; + vec3 w0 = -w3 + f2 * 0.5 - f * 0.5 + 1.0 / 6.0; + vec3 w1 = f3 * 0.5 - f2 + 2.0 / 3.0; + vec3 w2 = 1.0 - w0 - w1 - w3; + + vec3 s0 = w0 + w1; + vec3 s1 = w2 + w3; + + vec3 f0 = w1 / (w0 + w1); + vec3 f1 = w3 / (w2 + w3); + + vec2 final_z; + vec4 final_co; + final_co.xy = tc.xy - 1.0 + f0.xy; + final_co.zw = tc.xy + 1.0 + f1.xy; + final_z = tc.zz + vec2(-1.0, 1.0) + vec2(f0.z, f1.z); + + final_co /= tex_size.xyxy; + final_z /= tex_size.zz; + + vec4 color; + color = texture(ima, vec3(final_co.xy, final_z.x)) * s0.x * s0.y * s0.z; + color += texture(ima, vec3(final_co.zy, final_z.x)) * s1.x * s0.y * s0.z; + color += texture(ima, vec3(final_co.xw, final_z.x)) * s0.x * s1.y * s0.z; + color += texture(ima, vec3(final_co.zw, final_z.x)) * s1.x * s1.y * s0.z; + + color += texture(ima, vec3(final_co.xy, final_z.y)) * s0.x * s0.y * s1.z; + color += texture(ima, vec3(final_co.zy, final_z.y)) * s1.x * s0.y * s1.z; + color += texture(ima, vec3(final_co.xw, final_z.y)) * s0.x * s1.y * s1.z; + color += texture(ima, vec3(final_co.zw, final_z.y)) * s1.x * s1.y * s1.z; + + return color; +} + +#ifdef USE_TRICUBIC +# define sample_volume_texture sample_tricubic +#else +# define sample_volume_texture sample_trilinear +#endif + +void volume_properties(vec3 ls_pos, out vec3 scattering, out float extinction) +{ + vec3 co = ls_pos * 0.5 + 0.5; +#ifdef USE_COBA + float val = sample_volume_texture(densityTexture, co).r; + vec4 tval = texture(transferTexture, val) * densityScale; + tval.rgb = pow(tval.rgb, vec3(2.2)); + scattering = tval.rgb * 1500.0; + extinction = max(1e-4, tval.a * 50.0); +#else + float flame = sample_volume_texture(flameTexture, co).r; + vec4 emission = texture(flameColorTexture, flame); + float shadows = sample_volume_texture(shadowTexture, co).r; + vec4 density = sample_volume_texture(densityTexture, co); /* rgb: color, a: density */ + + scattering = density.rgb * (density.a * densityScale); + extinction = max(1e-4, dot(scattering, vec3(0.33333))); + + /* Scale shadows in log space and clamp them to avoid completely black shadows. */ + scattering *= exp(clamp(log(shadows) * densityScale * 0.1, -2.5, 0.0)) * M_PI; + + /* 800 is arbitrary and here to mimic old viewport. TODO make it a parameter */ + scattering += pow(emission.rgb, vec3(2.2)) * emission.a * 800.0; +#endif +} + +void eval_volume_step(inout vec3 Lscat, float extinction, float step_len, out float Tr) +{ + Lscat *= phase_function_isotropic(); + /* Evaluate Scattering */ + Tr = exp(-extinction * step_len); + /* integrate along the current step segment */ + Lscat = (Lscat - Lscat * Tr) / extinction; +} + +#define P(x) ((x + 0.5) * (1.0 / 16.0)) +const vec4 dither_mat[4] = vec4[4]( + vec4( P(0.0), P(8.0), P(2.0), P(10.0)), + vec4(P(12.0), P(4.0), P(14.0), P(6.0)), + vec4( P(3.0), P(11.0), P(1.0), P(9.0)), + vec4(P(15.0), P(7.0), P(13.0), P(5.0)) +); + +vec4 volume_integration( + vec3 ray_ori, vec3 ray_dir, float ray_inc, float ray_max, float step_len) +{ + /* Start with full transmittance and no scattered light. */ + vec3 final_scattering = vec3(0.0); + float final_transmittance = 1.0; + + ivec2 tx = ivec2(gl_FragCoord.xy) % 4; + float noise = fract(dither_mat[tx.x][tx.y] + noiseOfs); + + float ray_len = noise * ray_inc; + for (int i = 0; i < samplesLen && ray_len < ray_max; ++i, ray_len += ray_inc) { + vec3 ls_pos = ray_ori + ray_dir * ray_len; + + vec3 Lscat; + float s_extinction, Tr; + volume_properties(ls_pos, Lscat, s_extinction); + eval_volume_step(Lscat, s_extinction, step_len, Tr); + /* accumulate and also take into account the transmittance from previous steps */ + final_scattering += final_transmittance * Lscat; + final_transmittance *= Tr; + } + + return vec4(final_scattering, final_transmittance); +} + +void main() +{ +#ifdef VOLUME_SLICE + /* Manual depth test. TODO remove. */ + float depth = texelFetch(depthBuffer, ivec2(gl_FragCoord.xy), 0).r; + if (gl_FragCoord.z >= depth) { + discard; + } + + vec3 Lscat; + float s_extinction, Tr; + volume_properties(localPos, Lscat, s_extinction); + eval_volume_step(Lscat, s_extinction, stepLength, Tr); + + fragColor = vec4(Lscat, Tr); +#else + vec2 screen_uv = gl_FragCoord.xy / vec2(textureSize(depthBuffer, 0).xy); + bool is_persp = ProjectionMatrix[3][3] == 0.0; + + vec3 volume_center = ModelMatrix[3].xyz; + + float depth = texelFetch(depthBuffer, ivec2(gl_FragCoord.xy), 0).r; + float depth_end = min(depth, gl_FragCoord.z); + vec3 vs_ray_end = get_view_space_from_depth(screen_uv, depth_end); + vec3 vs_ray_ori = get_view_space_from_depth(screen_uv, 0.0); + vec3 vs_ray_dir = (is_persp) ? (vs_ray_end - vs_ray_ori) : vec3(0.0, 0.0, -1.0); + vs_ray_dir /= abs(vs_ray_dir.z); + + vec3 ls_ray_dir = mat3(ModelViewMatrixInverse) * vs_ray_dir * OrcoTexCoFactors[1] * 2.0; + vec3 ls_ray_ori = (ModelViewMatrixInverse * vec4(vs_ray_ori, 1.0)).xyz; + vec3 ls_ray_end = (ModelViewMatrixInverse * vec4(vs_ray_end, 1.0)).xyz; + + ls_ray_ori = (OrcoTexCoFactors[0] + ls_ray_ori * OrcoTexCoFactors[1]) * 2.0 - 1.0; + ls_ray_end = (OrcoTexCoFactors[0] + ls_ray_end * OrcoTexCoFactors[1]) * 2.0 - 1.0; + + /* TODO: Align rays to volume center so that it mimics old behaviour of slicing the volume. */ + + float dist = line_unit_box_intersect_dist(ls_ray_ori, ls_ray_dir); + if (dist > 0.0) { + ls_ray_ori = ls_ray_dir * dist + ls_ray_ori; + } + + vec3 ls_vol_isect = ls_ray_end - ls_ray_ori; + if (dot(ls_ray_dir, ls_vol_isect) < 0.0) { + /* Start is further away than the end. + * That means no volume is intersected. */ + discard; + } + + fragColor = volume_integration(ls_ray_ori, ls_ray_dir, stepLength, + length(ls_vol_isect) / length(ls_ray_dir), + length(vs_ray_dir) * stepLength); +#endif + + /* Convert transmitance to alpha so we can use premul blending. */ + fragColor.a = 1.0 - fragColor.a; +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_volume_vert.glsl b/source/blender/draw/engines/workbench/shaders/workbench_volume_vert.glsl new file mode 100644 index 00000000000..7ce21c3d5ca --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_volume_vert.glsl @@ -0,0 +1,33 @@ + +uniform mat4 ModelViewProjectionMatrix; +uniform vec3 OrcoTexCoFactors[2]; +uniform float slicePosition; +uniform int sliceAxis; /* -1 is no slice, 0 is X, 1 is Y, 2 is Z. */ + +in vec3 pos; + +#ifdef VOLUME_SLICE +in vec3 uvs; + +out vec3 localPos; +#endif + +void main() +{ +#ifdef VOLUME_SLICE + if (sliceAxis == 0) { + localPos = vec3(slicePosition * 2.0 - 1.0, pos.xy); + } + else if (sliceAxis == 1) { + localPos = vec3(pos.x, slicePosition * 2.0 - 1.0, pos.y); + } + else { + localPos = vec3(pos.xy, slicePosition * 2.0 - 1.0); + } + vec3 final_pos = localPos; +#else + vec3 final_pos = pos; +#endif + final_pos = ((final_pos * 0.5 + 0.5) - OrcoTexCoFactors[0]) / OrcoTexCoFactors[1]; + gl_Position = ModelViewProjectionMatrix * vec4(final_pos, 1.0); +} diff --git a/source/blender/draw/engines/workbench/shaders/workbench_world_light_lib.glsl b/source/blender/draw/engines/workbench/shaders/workbench_world_light_lib.glsl new file mode 100644 index 00000000000..e25be733d44 --- /dev/null +++ b/source/blender/draw/engines/workbench/shaders/workbench_world_light_lib.glsl @@ -0,0 +1,191 @@ +#define BLINN + +#if STUDIOLIGHT_SH_BANDS == 2 +vec3 spherical_harmonics(vec3 N, vec3 sh_coefs[STUDIOLIGHT_SH_MAX_COMPONENTS]) +{ + /* http://www.geomerics.com/wp-content/uploads/2015/08/CEDEC_Geomerics_ReconstructingDiffuseLighting1.pdf */ + /* Highly optimized form, precompute as much as we can. */ + /** + * R1 = 0.5 * vec3(L3.r, L2.r, L1.r); + * sh_coefs[0..2] = R1 / length(R1); + **/ + vec3 q; + q.x = dot(sh_coefs[1], N); + q.y = dot(sh_coefs[2], N); + q.z = dot(sh_coefs[3], N); + q = 0.5 * q + 0.5; + + /** + * R0 = L0.r; + * lr1_r0 = lenR1 / R0; + * p = 1.0 + 2.0 * lr1_r0; + * a = (1.0 - lr1_r0) / (1.0 + lr1_r0); + * return R0 * (a + (1.0 - a) * (p + 1.0) * pow(q, p)); + * + * sh_coefs[4] = p; + * sh_coefs[5] = R0 * a; + * sh_coefs[0] = R0 * (1.0 - a) * (p + 1.0); + **/ + q = pow(q, sh_coefs[4]); + return sh_coefs[0] * q + sh_coefs[5]; +} + +#else + +vec3 spherical_harmonics(vec3 N, vec3 sh_coefs[STUDIOLIGHT_SH_MAX_COMPONENTS]) +{ + vec3 sh = 0.282095 * sh_coefs[0]; + +# if STUDIOLIGHT_SH_BANDS > 1 + float nx = N.x; + float ny = N.y; + float nz = N.z; + sh += -0.488603 * nz * sh_coefs[1]; + sh += 0.488603 * ny * sh_coefs[2]; + sh += -0.488603 * nx * sh_coefs[3]; +# endif +# if STUDIOLIGHT_SH_BANDS > 2 + float nx2 = nx * nx; + float ny2 = ny * ny; + float nz2 = nz * nz; + sh += 1.092548 * nx * nz * sh_coefs[4]; + sh += -1.092548 * nz * ny * sh_coefs[5]; + sh += 0.315392 * (3.0 * ny2 - 1.0) * sh_coefs[6]; + sh += -1.092548 * nx * ny * sh_coefs[7]; + sh += 0.546274 * (nx2 - nz2) * sh_coefs[8]; +# endif +# if STUDIOLIGHT_SH_BANDS > 4 + float nx4 = nx2 * nx2; + float ny4 = ny2 * ny2; + float nz4 = nz2 * nz2; + sh += (2.5033429417967046 * nx * nz * (nx2 - nz2)) * sh_coefs[9]; + sh += (-1.7701307697799304 * nz * ny * (3.0 * nx2 - nz2)) * sh_coefs[10]; + sh += (0.9461746957575601 * nz * nx * (-1.0 +7.0*ny2)) * sh_coefs[11]; + sh += (-0.6690465435572892 * nz * ny * (-3.0 + 7.0 * ny2)) * sh_coefs[12]; + sh += ((105.0*ny4-90.0*ny2+9.0)/28.359261614) * sh_coefs[13]; + sh += (-0.6690465435572892 * nx * ny * (-3.0 + 7.0 * ny2)) * sh_coefs[14]; + sh += (0.9461746957575601 * (nx2 - nz2) * (-1.0 + 7.0 * ny2)) * sh_coefs[15]; + sh += (-1.7701307697799304 * nx * ny * (nx2 - 3.0 * nz2)) * sh_coefs[16]; + sh += (0.6258357354491761 * (nx4 - 6.0 * nz2 * nx2 + nz4)) * sh_coefs[17]; +# endif + return sh; +} +#endif + +/* [Drobot2014a] Low Level Optimizations for GCN */ +vec4 fast_rcp(vec4 v) +{ + return intBitsToFloat(0x7eef370b - floatBitsToInt(v)); +} + +vec3 brdf_approx(vec3 spec_color, float roughness, float NV) +{ + /* Treat anything below 2% as shadowing. + * (in other words, makes it possible to completely disable + * specular on a material by setting specular color to black). */ + float shadowing = clamp(50.0 * spec_color.g, 0.0, 1.0); + /* Very rough own approx. We don't need it to be correct, just fast. + * Just simulate fresnel effect with roughness attenuation. */ + float fresnel = exp2(-8.35 * NV) * (1.0 - roughness); + return mix(spec_color, vec3(1.0), fresnel) * shadowing; +} + +void prep_specular( + vec3 L, vec3 I, vec3 N, vec3 R, + out float NL, out float wrapped_NL, out float spec_angle) +{ + wrapped_NL = dot(L, R); + vec3 half_dir = normalize(L + I); + spec_angle = clamp(dot(half_dir, N), 0.0, 1.0); + NL = clamp(dot(L, N), 0.0, 1.0); +} + +/* Normalized Blinn shading */ +vec4 blinn_specular(vec4 shininess, vec4 spec_angle, vec4 NL) +{ + /* Pi is already divided in the lamp power. + * normalization_factor = (shininess + 8.0) / (8.0 * M_PI) */ + vec4 normalization_factor = shininess * 0.125 + 1.0; + vec4 spec_light = pow(spec_angle, shininess) * NL * normalization_factor; + + return spec_light; +} + +/* NL need to be unclamped. w in [0..1] range. */ +vec4 wrapped_lighting(vec4 NL, vec4 w) +{ + vec4 w_1 = w + 1.0; + vec4 denom = fast_rcp(w_1 * w_1); + return clamp((NL + w) * denom, 0.0, 1.0); +} + +vec3 get_world_lighting( + WorldData world_data, + vec3 diffuse_color, vec3 specular_color, float roughness, + vec3 N, vec3 I) +{ + vec3 specular_light = world_data.ambient_color.rgb; + vec3 diffuse_light = world_data.ambient_color.rgb; + vec4 wrap = vec4( + world_data.lights[0].diffuse_color_wrap.a, + world_data.lights[1].diffuse_color_wrap.a, + world_data.lights[2].diffuse_color_wrap.a, + world_data.lights[3].diffuse_color_wrap.a + ); + +#ifdef V3D_SHADING_SPECULAR_HIGHLIGHT + /* Prepare Specular computation. Eval 4 lights at once. */ + vec3 R = -reflect(I, N); + vec4 spec_angle, spec_NL, wrap_NL; + prep_specular(world_data.lights[0].direction.xyz, I, N, R, spec_NL.x, wrap_NL.x, spec_angle.x); + prep_specular(world_data.lights[1].direction.xyz, I, N, R, spec_NL.y, wrap_NL.y, spec_angle.y); + prep_specular(world_data.lights[2].direction.xyz, I, N, R, spec_NL.z, wrap_NL.z, spec_angle.z); + prep_specular(world_data.lights[3].direction.xyz, I, N, R, spec_NL.w, wrap_NL.w, spec_angle.w); + + vec4 gloss = vec4(1.0 - roughness); + /* Reduce gloss for smooth light. (simulate bigger light) */ + gloss *= 1.0 - wrap; + vec4 shininess = exp2(10.0 * gloss + 1.0); + + vec4 spec_light = blinn_specular(shininess, spec_angle, spec_NL); + + /* Simulate Env. light. */ + vec4 w = mix(wrap, vec4(1.0), roughness); + vec4 spec_env = wrapped_lighting(wrap_NL, w); + + spec_light = mix(spec_light, spec_env, wrap * wrap); + + /* Multiply result by lights specular colors. */ + specular_light += spec_light.x * world_data.lights[0].specular_color.rgb; + specular_light += spec_light.y * world_data.lights[1].specular_color.rgb; + specular_light += spec_light.z * world_data.lights[2].specular_color.rgb; + specular_light += spec_light.w * world_data.lights[3].specular_color.rgb; + + float NV = clamp(dot(N, I), 0.0, 1.0); + specular_color = brdf_approx(specular_color, roughness, NV); +#endif + specular_light *= specular_color; + + /* Prepare diffuse computation. Eval 4 lights at once. */ + vec4 diff_NL; + diff_NL.x = dot(world_data.lights[0].direction.xyz, N); + diff_NL.y = dot(world_data.lights[1].direction.xyz, N); + diff_NL.z = dot(world_data.lights[2].direction.xyz, N); + diff_NL.w = dot(world_data.lights[3].direction.xyz, N); + + vec4 diff_light = wrapped_lighting(diff_NL, wrap); + + /* Multiply result by lights diffuse colors. */ + diffuse_light += diff_light.x * world_data.lights[0].diffuse_color_wrap.rgb; + diffuse_light += diff_light.y * world_data.lights[1].diffuse_color_wrap.rgb; + diffuse_light += diff_light.z * world_data.lights[2].diffuse_color_wrap.rgb; + diffuse_light += diff_light.w * world_data.lights[3].diffuse_color_wrap.rgb; + + /* Energy conservation with colored specular look strange. + * Limit this strangeness by using mono-chromatic specular intensity. */ + float spec_energy = dot(specular_color, vec3(0.33333)); + + diffuse_light *= diffuse_color * (1.0 - spec_energy); + + return diffuse_light + specular_light; +} diff --git a/source/blender/draw/engines/workbench/solid_mode.c b/source/blender/draw/engines/workbench/solid_mode.c new file mode 100644 index 00000000000..19c8b4f18d1 --- /dev/null +++ b/source/blender/draw/engines/workbench/solid_mode.c @@ -0,0 +1,115 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file solid_mode.c + * \ingroup draw_engine + * + * Simple engine for drawing color and/or depth. + * When we only need simple studio shaders. + */ + +#include "DRW_render.h" + +#include "GPU_shader.h" + +#include "RE_pipeline.h" + +#include "workbench_private.h" + +/* Functions */ + +static void workbench_solid_engine_init(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_deferred_engine_init(data); +} + +static void workbench_solid_cache_init(void *vedata) +{ + + WORKBENCH_Data *data = vedata; + workbench_deferred_cache_init(data); +} + +static void workbench_solid_cache_populate(void *vedata, Object *ob) +{ + WORKBENCH_Data *data = vedata; + workbench_deferred_solid_cache_populate(data, ob); +} + +static void workbench_solid_cache_finish(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_deferred_cache_finish(data); +} + +static void workbench_solid_draw_background(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_deferred_draw_background(data); + workbench_deferred_draw_scene(data); + workbench_deferred_draw_finish(data); +} + +static void workbench_solid_engine_free(void) +{ + workbench_deferred_engine_free(); +} + +static void workbench_solid_view_update(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_taa_view_updated(data); +} + +static void workbench_solid_id_update(void *UNUSED(vedata), struct ID *id) +{ + if (GS(id->name) == ID_OB) { + WORKBENCH_ObjectData *oed = (WORKBENCH_ObjectData *)DRW_drawdata_get(id, &draw_engine_workbench_solid); + if (oed != NULL && oed->dd.recalc != 0) { + oed->shadow_bbox_dirty = (oed->dd.recalc & ID_RECALC_ALL) != 0; + oed->dd.recalc = 0; + } + } +} + +static void workbench_render_to_image(void *vedata, RenderEngine *engine, RenderLayer *render_layer, const rcti *rect) +{ + workbench_render(vedata, engine, render_layer, rect); +} + +static const DrawEngineDataSize workbench_data_size = DRW_VIEWPORT_DATA_SIZE(WORKBENCH_Data); + +DrawEngineType draw_engine_workbench_solid = { + NULL, NULL, + N_("Workbench"), + &workbench_data_size, + &workbench_solid_engine_init, + &workbench_solid_engine_free, + &workbench_solid_cache_init, + &workbench_solid_cache_populate, + &workbench_solid_cache_finish, + &workbench_solid_draw_background, + NULL, + &workbench_solid_view_update, + &workbench_solid_id_update, + &workbench_render_to_image, +}; diff --git a/source/blender/draw/engines/workbench/transparent_mode.c b/source/blender/draw/engines/workbench/transparent_mode.c new file mode 100644 index 00000000000..1d451a96419 --- /dev/null +++ b/source/blender/draw/engines/workbench/transparent_mode.c @@ -0,0 +1,97 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file transparent_mode.c + * \ingroup draw_engine + * + * Simple engine for drawing color and/or depth. + * When we only need simple studio shaders. + */ + +#include "DRW_render.h" + +#include "GPU_shader.h" + +#include "workbench_private.h" + +/* Functions */ + +static void workbench_transparent_engine_init(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_forward_engine_init(data); +} + +static void workbench_transparent_cache_init(void *vedata) +{ + + WORKBENCH_Data *data = vedata; + workbench_forward_cache_init(data); +} + +static void workbench_transparent_cache_populate(void *vedata, Object *ob) +{ + WORKBENCH_Data *data = vedata; + workbench_forward_cache_populate(data, ob); +} + +static void workbench_transparent_cache_finish(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_forward_cache_finish(data); +} + +static void workbench_transparent_draw_background(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_forward_draw_background(data); + workbench_forward_draw_scene(data); + workbench_forward_draw_finish(data); +} + +static void workbench_transparent_engine_free(void) +{ + workbench_forward_engine_free(); +} + +static void workbench_transparent_view_update(void *vedata) +{ + WORKBENCH_Data *data = vedata; + workbench_taa_view_updated(data); +} + +static const DrawEngineDataSize workbench_data_size = DRW_VIEWPORT_DATA_SIZE(WORKBENCH_Data); + +DrawEngineType draw_engine_workbench_transparent = { + NULL, NULL, + N_("Workbench"), + &workbench_data_size, + &workbench_transparent_engine_init, + &workbench_transparent_engine_free, + &workbench_transparent_cache_init, + &workbench_transparent_cache_populate, + &workbench_transparent_cache_finish, + &workbench_transparent_draw_background, + NULL, + &workbench_transparent_view_update, + NULL, + NULL, +}; diff --git a/source/blender/draw/engines/workbench/workbench_data.c b/source/blender/draw/engines/workbench/workbench_data.c new file mode 100644 index 00000000000..1cdf4c2b443 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_data.c @@ -0,0 +1,176 @@ +#include "workbench_private.h" + +#include "DNA_userdef_types.h" + +#include "UI_resources.h" + + +void workbench_effect_info_init(WORKBENCH_EffectInfo *effect_info) +{ + effect_info->jitter_index = 0; + effect_info->view_updated = true; +} + +void workbench_private_data_init(WORKBENCH_PrivateData *wpd) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene = draw_ctx->scene; + wpd->material_hash = BLI_ghash_ptr_new(__func__); + wpd->user_preferences = &U; + + View3D *v3d = draw_ctx->v3d; + if (!v3d) { + wpd->shading = scene->display.shading; + wpd->use_color_view_settings = true; + } + else if (v3d->shading.type == OB_RENDER && + BKE_scene_uses_blender_workbench(scene)) + { + wpd->shading = scene->display.shading; + wpd->use_color_view_settings = true; + } + else { + wpd->shading = v3d->shading; + wpd->use_color_view_settings = false; + } + + if (wpd->shading.light == V3D_LIGHTING_MATCAP) { + wpd->studio_light = BKE_studiolight_find( + wpd->shading.matcap, STUDIOLIGHT_TYPE_MATCAP); + } + else { + wpd->studio_light = BKE_studiolight_find( + wpd->shading.studio_light, STUDIOLIGHT_TYPE_STUDIO); + } + + /* If matcaps are missing, use this as fallback. */ + if (UNLIKELY(wpd->studio_light == NULL)) { + wpd->studio_light = BKE_studiolight_find( + wpd->shading.studio_light, STUDIOLIGHT_TYPE_STUDIO); + } + + wpd->shadow_multiplier = 1.0 - wpd->shading.shadow_intensity; + + WORKBENCH_UBO_World *wd = &wpd->world_data; + wd->matcap_orientation = (wpd->shading.flag & V3D_SHADING_MATCAP_FLIP_X) != 0; + wd->background_alpha = (DRW_state_is_image_render() && scene->r.alphamode == R_ALPHAPREMUL) ? 0.0f : 1.0f; + + if (!v3d || ((v3d->shading.background_type == V3D_SHADING_BACKGROUND_WORLD) && + (scene->world != NULL))) + { + copy_v3_v3(wd->background_color_low, &scene->world->horr); + copy_v3_v3(wd->background_color_high, &scene->world->horr); + } + else if (v3d->shading.background_type == V3D_SHADING_BACKGROUND_VIEWPORT) { + copy_v3_v3(wd->background_color_low, v3d->shading.background_color); + copy_v3_v3(wd->background_color_high, v3d->shading.background_color); + } + else if (v3d) { + UI_GetThemeColor3fv(UI_GetThemeValue(TH_SHOW_BACK_GRAD) ? TH_LOW_GRAD : TH_HIGH_GRAD, wd->background_color_low); + UI_GetThemeColor3fv(TH_HIGH_GRAD, wd->background_color_high); + + /* XXX: Really quick conversion to avoid washed out background. + * Needs to be addressed properly (color managed using ocio). */ + srgb_to_linearrgb_v3_v3(wd->background_color_high, wd->background_color_high); + srgb_to_linearrgb_v3_v3(wd->background_color_low, wd->background_color_low); + } + else { + zero_v3(wd->background_color_low); + zero_v3(wd->background_color_high); + } + + studiolight_update_world(wpd, wpd->studio_light, wd); + + copy_v3_v3(wd->object_outline_color, wpd->shading.object_outline_color); + wd->object_outline_color[3] = 1.0f; + + wd->curvature_ridge = 0.5f / max_ff(SQUARE(wpd->shading.curvature_ridge_factor), 1e-4f); + wd->curvature_valley = 0.7f / max_ff(SQUARE(wpd->shading.curvature_valley_factor), 1e-4f); + + wpd->world_ubo = DRW_uniformbuffer_create(sizeof(WORKBENCH_UBO_World), &wpd->world_data); + + /* Cavity settings */ + { + const int ssao_samples = scene->display.matcap_ssao_samples; + + float invproj[4][4]; + const bool is_persp = DRW_viewport_is_persp_get(); + /* view vectors for the corners of the view frustum. + * Can be used to recreate the world space position easily */ + float viewvecs[3][4] = { + {-1.0f, -1.0f, -1.0f, 1.0f}, + {1.0f, -1.0f, -1.0f, 1.0f}, + {-1.0f, 1.0f, -1.0f, 1.0f} + }; + int i; + const float *size = DRW_viewport_size_get(); + + wpd->ssao_params[0] = ssao_samples; + wpd->ssao_params[1] = size[0] / 64.0; + wpd->ssao_params[2] = size[1] / 64.0; + wpd->ssao_params[3] = 0; + + /* distance, factor, factor, attenuation */ + copy_v4_fl4( + wpd->ssao_settings, + scene->display.matcap_ssao_distance, + wpd->shading.cavity_valley_factor, + wpd->shading.cavity_ridge_factor, + scene->display.matcap_ssao_attenuation); + + /* invert the view matrix */ + DRW_viewport_matrix_get(wpd->winmat, DRW_MAT_WIN); + invert_m4_m4(invproj, wpd->winmat); + + /* convert the view vectors to view space */ + for (i = 0; i < 3; i++) { + mul_m4_v4(invproj, viewvecs[i]); + /* normalized trick see: + * http://www.derschmale.com/2014/01/26/reconstructing-positions-from-the-depth-buffer */ + mul_v3_fl(viewvecs[i], 1.0f / viewvecs[i][3]); + if (is_persp) + mul_v3_fl(viewvecs[i], 1.0f / viewvecs[i][2]); + viewvecs[i][3] = 1.0; + + copy_v4_v4(wpd->viewvecs[i], viewvecs[i]); + } + + /* we need to store the differences */ + wpd->viewvecs[1][0] -= wpd->viewvecs[0][0]; + wpd->viewvecs[1][1] = wpd->viewvecs[2][1] - wpd->viewvecs[0][1]; + + /* calculate a depth offset as well */ + if (!is_persp) { + float vec_far[] = {-1.0f, -1.0f, 1.0f, 1.0f}; + mul_m4_v4(invproj, vec_far); + mul_v3_fl(vec_far, 1.0f / vec_far[3]); + wpd->viewvecs[1][2] = vec_far[2] - wpd->viewvecs[0][2]; + } + } + + wpd->volumes_do = false; + BLI_listbase_clear(&wpd->smoke_domains); +} + +void workbench_private_data_get_light_direction(WORKBENCH_PrivateData *wpd, float r_light_direction[3]) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + WORKBENCH_UBO_World *wd = &wpd->world_data; + float view_matrix[4][4]; + DRW_viewport_matrix_get(view_matrix, DRW_MAT_VIEW); + + copy_v3_v3(r_light_direction, scene->display.light_direction); + negate_v3(r_light_direction); + + /* Shadow direction. */ + mul_v3_mat3_m4v3(wd->shadow_direction_vs, view_matrix, r_light_direction); + + DRW_uniformbuffer_update(wpd->world_ubo, wd); +} + +void workbench_private_data_free(WORKBENCH_PrivateData *wpd) +{ + BLI_ghash_free(wpd->material_hash, NULL, MEM_freeN); + DRW_UBO_FREE_SAFE(wpd->world_ubo); +} diff --git a/source/blender/draw/engines/workbench/workbench_deferred.c b/source/blender/draw/engines/workbench/workbench_deferred.c new file mode 100644 index 00000000000..1ca76da672a --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_deferred.c @@ -0,0 +1,1003 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_deferred.c + * \ingroup draw_engine + */ + +#include "workbench_private.h" + +#include "BIF_gl.h" + +#include "BLI_alloca.h" +#include "BLI_dynstr.h" +#include "BLI_utildefines.h" +#include "BLI_rand.h" + +#include "BKE_node.h" +#include "BKE_modifier.h" +#include "BKE_particle.h" + +#include "DNA_image_types.h" +#include "DNA_mesh_types.h" +#include "DNA_modifier_types.h" +#include "DNA_node_types.h" + +#include "ED_uvedit.h" + +#include "GPU_shader.h" +#include "GPU_texture.h" + +#include "../eevee/eevee_lut.h" /* TODO find somewhere to share blue noise Table */ + +/* *********** STATIC *********** */ + +/* #define DEBUG_SHADOW_VOLUME */ + +#ifdef DEBUG_SHADOW_VOLUME +# include "draw_debug.h" +#endif + +static struct { + struct GPUShader *prepass_sh_cache[MAX_SHADERS]; + struct GPUShader *composite_sh_cache[MAX_SHADERS]; + struct GPUShader *cavity_sh[MAX_CAVITY_SHADERS]; + struct GPUShader *ghost_resolve_sh; + struct GPUShader *shadow_fail_sh; + struct GPUShader *shadow_fail_manifold_sh; + struct GPUShader *shadow_pass_sh; + struct GPUShader *shadow_pass_manifold_sh; + struct GPUShader *shadow_caps_sh; + struct GPUShader *shadow_caps_manifold_sh; + + struct GPUTexture *ghost_depth_tx; /* ref only, not alloced */ + struct GPUTexture *object_id_tx; /* ref only, not alloced */ + struct GPUTexture *color_buffer_tx; /* ref only, not alloced */ + struct GPUTexture *cavity_buffer_tx; /* ref only, not alloced */ + struct GPUTexture *specular_buffer_tx; /* ref only, not alloced */ + struct GPUTexture *normal_buffer_tx; /* ref only, not alloced */ + struct GPUTexture *composite_buffer_tx; /* ref only, not alloced */ + + SceneDisplay display; /* world light direction for shadows */ + int next_object_id; + + struct GPUUniformBuffer *sampling_ubo; + struct GPUTexture *jitter_tx; + int cached_sample_num; +} e_data = {{NULL}}; + +/* Shaders */ +extern char datatoc_common_hair_lib_glsl[]; + +extern char datatoc_workbench_prepass_vert_glsl[]; +extern char datatoc_workbench_prepass_frag_glsl[]; +extern char datatoc_workbench_cavity_frag_glsl[]; +extern char datatoc_workbench_deferred_composite_frag_glsl[]; +extern char datatoc_workbench_ghost_resolve_frag_glsl[]; + +extern char datatoc_workbench_shadow_vert_glsl[]; +extern char datatoc_workbench_shadow_geom_glsl[]; +extern char datatoc_workbench_shadow_caps_geom_glsl[]; +extern char datatoc_workbench_shadow_debug_frag_glsl[]; + +extern char datatoc_workbench_background_lib_glsl[]; +extern char datatoc_workbench_cavity_lib_glsl[]; +extern char datatoc_workbench_common_lib_glsl[]; +extern char datatoc_workbench_data_lib_glsl[]; +extern char datatoc_workbench_object_outline_lib_glsl[]; +extern char datatoc_workbench_curvature_lib_glsl[]; +extern char datatoc_workbench_world_light_lib_glsl[]; + +extern char datatoc_gpu_shader_depth_only_frag_glsl[]; + +static char *workbench_build_composite_frag(WORKBENCH_PrivateData *wpd) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_workbench_data_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_common_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_background_lib_glsl); + + if ((wpd->shading.light & V3D_LIGHTING_MATCAP) || (wpd->shading.light & V3D_LIGHTING_STUDIO) || (wpd->shading.flag & V3D_SHADING_SPECULAR_HIGHLIGHT)) { + BLI_dynstr_append(ds, datatoc_workbench_world_light_lib_glsl); + } + if (wpd->shading.flag & V3D_SHADING_OBJECT_OUTLINE) { + BLI_dynstr_append(ds, datatoc_workbench_object_outline_lib_glsl); + } + if (CURVATURE_ENABLED(wpd)) { + BLI_dynstr_append(ds, datatoc_workbench_curvature_lib_glsl); + } + + BLI_dynstr_append(ds, datatoc_workbench_deferred_composite_frag_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static char *workbench_build_prepass_frag(void) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_workbench_data_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_common_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_prepass_frag_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static char *workbench_build_prepass_vert(bool is_hair) +{ + char *str = NULL; + if (!is_hair) { + return BLI_strdup(datatoc_workbench_prepass_vert_glsl); + } + + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_common_hair_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_prepass_vert_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static char *workbench_build_cavity_frag(bool cavity, bool curvature, bool high_dpi) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + + if (cavity) { + BLI_dynstr_append(ds, "#define USE_CAVITY\n"); + } + if (curvature) { + BLI_dynstr_append(ds, "#define USE_CURVATURE\n"); + } + if (high_dpi) { + BLI_dynstr_append(ds, "#define CURVATURE_OFFSET 2\n"); + } + BLI_dynstr_append(ds, datatoc_workbench_common_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_curvature_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_cavity_frag_glsl); + BLI_dynstr_append(ds, datatoc_workbench_cavity_lib_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static GPUShader *workbench_cavity_shader_get(bool cavity, bool curvature) +{ + const bool high_dpi = (U.pixelsize > 1.5f); + int index = 0; + SET_FLAG_FROM_TEST(index, cavity, 1 << 0); + SET_FLAG_FROM_TEST(index, curvature, 1 << 1); + SET_FLAG_FROM_TEST(index, high_dpi, 1 << 2); + + GPUShader **sh = &e_data.cavity_sh[index]; + if (*sh == NULL) { + char *cavity_frag = workbench_build_cavity_frag(cavity, curvature, high_dpi); + *sh = DRW_shader_create_fullscreen(cavity_frag, NULL); + MEM_freeN(cavity_frag); + } + return *sh; +} + +static void ensure_deferred_shaders(WORKBENCH_PrivateData *wpd, int index, bool use_textures, bool is_hair) +{ + if (e_data.prepass_sh_cache[index] == NULL) { + char *defines = workbench_material_build_defines(wpd, use_textures, is_hair); + char *composite_frag = workbench_build_composite_frag(wpd); + char *prepass_vert = workbench_build_prepass_vert(is_hair); + char *prepass_frag = workbench_build_prepass_frag(); + e_data.prepass_sh_cache[index] = DRW_shader_create( + prepass_vert, NULL, + prepass_frag, defines); + if (!use_textures && !is_hair) { + e_data.composite_sh_cache[index] = DRW_shader_create_fullscreen(composite_frag, defines); + } + MEM_freeN(prepass_vert); + MEM_freeN(prepass_frag); + MEM_freeN(composite_frag); + MEM_freeN(defines); + } +} + +static void select_deferred_shaders(WORKBENCH_PrivateData *wpd) +{ + int index_solid = workbench_material_get_shader_index(wpd, false, false); + int index_solid_hair = workbench_material_get_shader_index(wpd, false, true); + int index_texture = workbench_material_get_shader_index(wpd, true, false); + int index_texture_hair = workbench_material_get_shader_index(wpd, true, true); + + ensure_deferred_shaders(wpd, index_solid, false, false); + ensure_deferred_shaders(wpd, index_solid_hair, false, true); + ensure_deferred_shaders(wpd, index_texture, true, false); + ensure_deferred_shaders(wpd, index_texture_hair, true, true); + + wpd->prepass_solid_sh = e_data.prepass_sh_cache[index_solid]; + wpd->prepass_solid_hair_sh = e_data.prepass_sh_cache[index_solid_hair]; + wpd->prepass_texture_sh = e_data.prepass_sh_cache[index_texture]; + wpd->prepass_texture_hair_sh = e_data.prepass_sh_cache[index_texture_hair]; + wpd->composite_sh = e_data.composite_sh_cache[index_solid]; +} + + +/* Using Hammersley distribution */ +static float *create_disk_samples(int num_samples, int num_iterations) +{ + /* vec4 to ensure memory alignment. */ + const int total_samples = num_samples * num_iterations; + float(*texels)[4] = MEM_mallocN(sizeof(float[4]) * total_samples, __func__); + const float num_samples_inv = 1.0f / num_samples; + + for (int i = 0; i < total_samples; i++) { + float it_add = (i / num_samples) * 0.499f; + float r = fmodf((i + 0.5f + it_add) * num_samples_inv, 1.0f); + double dphi; + BLI_hammersley_1D(i, &dphi); + + float phi = (float)dphi * 2.0f * M_PI + it_add; + texels[i][0] = cosf(phi); + texels[i][1] = sinf(phi); + /* This deliberately distribute more samples + * at the center of the disk (and thus the shadow). */ + texels[i][2] = r; + } + + return (float *)texels; +} + +static struct GPUTexture *create_jitter_texture(int num_samples) +{ + float jitter[64 * 64][3]; + const float num_samples_inv = 1.0f / num_samples; + + for (int i = 0; i < 64 * 64; i++) { + float phi = blue_noise[i][0] * 2.0f * M_PI; + /* This rotate the sample per pixels */ + jitter[i][0] = cosf(phi); + jitter[i][1] = sinf(phi); + /* This offset the sample along it's direction axis (reduce banding) */ + float bn = blue_noise[i][1] - 0.5f; + CLAMP(bn, -0.499f, 0.499f); /* fix fireflies */ + jitter[i][2] = bn * num_samples_inv; + } + + UNUSED_VARS(bsdf_split_sum_ggx, btdf_split_sum_ggx, ltc_mag_ggx, ltc_mat_ggx, ltc_disk_integral); + + return DRW_texture_create_2D(64, 64, GPU_RGB16F, DRW_TEX_FILTER | DRW_TEX_WRAP, &jitter[0][0]); +} +/* Functions */ + + +static void workbench_init_object_data(DrawData *dd) +{ + WORKBENCH_ObjectData *data = (WORKBENCH_ObjectData *)dd; + data->object_id = ((e_data.next_object_id++) & 0xff) + 1; + data->shadow_bbox_dirty = true; +} + +void workbench_deferred_engine_init(WORKBENCH_Data *vedata) +{ + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + const DRWContextState *draw_ctx = DRW_context_state_get(); + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_callocN(sizeof(*stl->g_data), __func__); + } + if (!stl->effects) { + stl->effects = MEM_callocN(sizeof(*stl->effects), __func__); + workbench_effect_info_init(stl->effects); + } + + if (!e_data.next_object_id) { + memset(e_data.prepass_sh_cache, 0x00, sizeof(struct GPUShader *) * MAX_SHADERS); + memset(e_data.composite_sh_cache, 0x00, sizeof(struct GPUShader *) * MAX_SHADERS); + e_data.next_object_id = 1; +#ifdef DEBUG_SHADOW_VOLUME + const char *shadow_frag = datatoc_workbench_shadow_debug_frag_glsl; +#else + const char *shadow_frag = datatoc_gpu_shader_depth_only_frag_glsl; +#endif + /* TODO only compile on demand */ + e_data.shadow_pass_sh = DRW_shader_create( + datatoc_workbench_shadow_vert_glsl, + datatoc_workbench_shadow_geom_glsl, + shadow_frag, + "#define SHADOW_PASS\n" + "#define DOUBLE_MANIFOLD\n"); + e_data.shadow_pass_manifold_sh = DRW_shader_create( + datatoc_workbench_shadow_vert_glsl, + datatoc_workbench_shadow_geom_glsl, + shadow_frag, + "#define SHADOW_PASS\n"); + e_data.shadow_fail_sh = DRW_shader_create( + datatoc_workbench_shadow_vert_glsl, + datatoc_workbench_shadow_geom_glsl, + shadow_frag, + "#define SHADOW_FAIL\n" + "#define DOUBLE_MANIFOLD\n"); + e_data.shadow_fail_manifold_sh = DRW_shader_create( + datatoc_workbench_shadow_vert_glsl, + datatoc_workbench_shadow_geom_glsl, + shadow_frag, + "#define SHADOW_FAIL\n"); + e_data.shadow_caps_sh = DRW_shader_create( + datatoc_workbench_shadow_vert_glsl, + datatoc_workbench_shadow_caps_geom_glsl, + shadow_frag, + "#define SHADOW_FAIL\n" + "#define DOUBLE_MANIFOLD\n"); + e_data.shadow_caps_manifold_sh = DRW_shader_create( + datatoc_workbench_shadow_vert_glsl, + datatoc_workbench_shadow_caps_geom_glsl, + shadow_frag, + "#define SHADOW_FAIL\n"); + + e_data.ghost_resolve_sh = DRW_shader_create_fullscreen(datatoc_workbench_ghost_resolve_frag_glsl, NULL); + } + workbench_volume_engine_init(); + workbench_fxaa_engine_init(); + workbench_taa_engine_init(vedata); + + WORKBENCH_PrivateData *wpd = stl->g_data; + workbench_private_data_init(wpd); + + { + const float *viewport_size = DRW_viewport_size_get(); + const int size[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + const GPUTextureFormat nor_tex_format = NORMAL_ENCODING_ENABLED() ? GPU_RG16 : GPU_RGBA32F; + e_data.object_id_tx = DRW_texture_pool_query_2D(size[0], size[1], GPU_R32UI, &draw_engine_workbench_solid); + e_data.color_buffer_tx = DRW_texture_pool_query_2D(size[0], size[1], GPU_RGBA8, &draw_engine_workbench_solid); + e_data.normal_buffer_tx = DRW_texture_pool_query_2D(size[0], size[1], nor_tex_format, &draw_engine_workbench_solid); + e_data.cavity_buffer_tx = DRW_texture_pool_query_2D(size[0], size[1], GPU_R16, &draw_engine_workbench_solid); + e_data.specular_buffer_tx = DRW_texture_pool_query_2D(size[0], size[1], GPU_RGBA8, &draw_engine_workbench_solid); + e_data.composite_buffer_tx = DRW_texture_pool_query_2D(size[0], size[1], GPU_RGBA16F, &draw_engine_workbench_solid); + + GPU_framebuffer_ensure_config(&fbl->prepass_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(e_data.object_id_tx), + GPU_ATTACHMENT_TEXTURE(e_data.color_buffer_tx), + GPU_ATTACHMENT_TEXTURE(e_data.specular_buffer_tx), + GPU_ATTACHMENT_TEXTURE(e_data.normal_buffer_tx), + }); + GPU_framebuffer_ensure_config(&fbl->cavity_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(e_data.cavity_buffer_tx), + }); + GPU_framebuffer_ensure_config(&fbl->composite_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(e_data.composite_buffer_tx), + }); + GPU_framebuffer_ensure_config(&fbl->volume_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(e_data.composite_buffer_tx), + }); + GPU_framebuffer_ensure_config(&fbl->effect_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(e_data.color_buffer_tx), + }); + } + + { + Scene *scene = draw_ctx->scene; + /* AO Samples Tex */ + int num_iterations = workbench_taa_calculate_num_iterations(vedata); + + const int ssao_samples_single_iteration = scene->display.matcap_ssao_samples; + const int ssao_samples = MIN2(num_iterations * ssao_samples_single_iteration, 500); + + if (e_data.sampling_ubo && (e_data.cached_sample_num != ssao_samples)) { + DRW_UBO_FREE_SAFE(e_data.sampling_ubo); + DRW_TEXTURE_FREE_SAFE(e_data.jitter_tx); + } + + if (e_data.sampling_ubo == NULL) { + float *samples = create_disk_samples(ssao_samples_single_iteration, num_iterations); + e_data.jitter_tx = create_jitter_texture(ssao_samples); + e_data.sampling_ubo = DRW_uniformbuffer_create(sizeof(float[4]) * ssao_samples, samples); + e_data.cached_sample_num = ssao_samples; + MEM_freeN(samples); + } + } + + /* Prepass */ + { + DRWShadingGroup *grp; + const bool do_cull = (draw_ctx->v3d && (draw_ctx->v3d->flag2 & V3D_BACKFACE_CULLING)); + + int state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS_EQUAL; + psl->prepass_pass = DRW_pass_create("Prepass", (do_cull) ? state | DRW_STATE_CULL_BACK : state); + psl->prepass_hair_pass = DRW_pass_create("Prepass", state); + + psl->ghost_prepass_pass = DRW_pass_create("Prepass Ghost", (do_cull) ? state | DRW_STATE_CULL_BACK : state); + psl->ghost_prepass_hair_pass = DRW_pass_create("Prepass Ghost", state); + + psl->ghost_resolve_pass = DRW_pass_create("Resolve Ghost Depth", DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_ALWAYS); + grp = DRW_shgroup_create(e_data.ghost_resolve_sh, psl->ghost_resolve_pass); + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &e_data.ghost_depth_tx); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + + { + workbench_aa_create_pass(vedata, &e_data.color_buffer_tx); + } + + if (SSAO_ENABLED(wpd) || CURVATURE_ENABLED(wpd)) { + int state = DRW_STATE_WRITE_COLOR; + GPUShader *shader = workbench_cavity_shader_get(SSAO_ENABLED(wpd), CURVATURE_ENABLED(wpd)); + psl->cavity_pass = DRW_pass_create("Cavity", state); + DRWShadingGroup *grp = DRW_shgroup_create(shader, psl->cavity_pass); + DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &e_data.normal_buffer_tx); + DRW_shgroup_uniform_block(grp, "samples_block", e_data.sampling_ubo); + + if (SSAO_ENABLED(wpd)) { + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &e_data.color_buffer_tx); + DRW_shgroup_uniform_vec2(grp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1); + DRW_shgroup_uniform_vec4(grp, "viewvecs[0]", (float *)wpd->viewvecs, 3); + DRW_shgroup_uniform_vec4(grp, "ssao_params", wpd->ssao_params, 1); + DRW_shgroup_uniform_vec4(grp, "ssao_settings", wpd->ssao_settings, 1); + DRW_shgroup_uniform_mat4(grp, "WinMatrix", wpd->winmat); + DRW_shgroup_uniform_texture(grp, "ssao_jitter", e_data.jitter_tx); + } + + if (CURVATURE_ENABLED(wpd)) { + DRW_shgroup_uniform_texture_ref(grp, "objectId", &e_data.object_id_tx); + DRW_shgroup_uniform_vec2(grp, "curvature_settings", &wpd->world_data.curvature_ridge, 1); + } + + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } +} + +static void workbench_setup_ghost_framebuffer(WORKBENCH_FramebufferList *fbl) +{ + const float *viewport_size = DRW_viewport_size_get(); + const int size[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + + e_data.ghost_depth_tx = DRW_texture_pool_query_2D(size[0], size[1], GPU_DEPTH_COMPONENT24, &draw_engine_workbench_solid); + GPU_framebuffer_ensure_config(&fbl->ghost_prepass_fb, { + GPU_ATTACHMENT_TEXTURE(e_data.ghost_depth_tx), + GPU_ATTACHMENT_TEXTURE(e_data.object_id_tx), + GPU_ATTACHMENT_TEXTURE(e_data.color_buffer_tx), + GPU_ATTACHMENT_TEXTURE(e_data.specular_buffer_tx), + GPU_ATTACHMENT_TEXTURE(e_data.normal_buffer_tx), + }); +} + +void workbench_deferred_engine_free(void) +{ + for (int index = 0; index < MAX_SHADERS; index++) { + DRW_SHADER_FREE_SAFE(e_data.prepass_sh_cache[index]); + DRW_SHADER_FREE_SAFE(e_data.composite_sh_cache[index]); + } + for (int index = 0; index < MAX_CAVITY_SHADERS; ++index) { + DRW_SHADER_FREE_SAFE(e_data.cavity_sh[index]); + } + DRW_SHADER_FREE_SAFE(e_data.ghost_resolve_sh); + DRW_UBO_FREE_SAFE(e_data.sampling_ubo); + DRW_TEXTURE_FREE_SAFE(e_data.jitter_tx); + + DRW_SHADER_FREE_SAFE(e_data.shadow_pass_sh); + DRW_SHADER_FREE_SAFE(e_data.shadow_pass_manifold_sh); + DRW_SHADER_FREE_SAFE(e_data.shadow_fail_sh); + DRW_SHADER_FREE_SAFE(e_data.shadow_fail_manifold_sh); + DRW_SHADER_FREE_SAFE(e_data.shadow_caps_sh); + DRW_SHADER_FREE_SAFE(e_data.shadow_caps_manifold_sh); + + workbench_volume_engine_free(); + workbench_fxaa_engine_free(); + workbench_taa_engine_free(); +} + +static void workbench_composite_uniforms(WORKBENCH_PrivateData *wpd, DRWShadingGroup *grp) +{ + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", &e_data.color_buffer_tx); + DRW_shgroup_uniform_texture_ref(grp, "objectId", &e_data.object_id_tx); + if (NORMAL_VIEWPORT_COMP_PASS_ENABLED(wpd)) { + DRW_shgroup_uniform_texture_ref(grp, "normalBuffer", &e_data.normal_buffer_tx); + } + if (SSAO_ENABLED(wpd) || CURVATURE_ENABLED(wpd)) { + DRW_shgroup_uniform_texture_ref(grp, "cavityBuffer", &e_data.cavity_buffer_tx); + } + if (SPECULAR_HIGHLIGHT_ENABLED(wpd)) { + DRW_shgroup_uniform_texture_ref(grp, "specularBuffer", &e_data.specular_buffer_tx); + } + if (SPECULAR_HIGHLIGHT_ENABLED(wpd) || STUDIOLIGHT_TYPE_MATCAP_ENABLED(wpd)) { + DRW_shgroup_uniform_vec4(grp, "viewvecs[0]", (float *)wpd->viewvecs, 3); + } + DRW_shgroup_uniform_block(grp, "world_block", wpd->world_ubo); + DRW_shgroup_uniform_vec2(grp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1); + + if (STUDIOLIGHT_TYPE_MATCAP_ENABLED(wpd)) { + BKE_studiolight_ensure_flag(wpd->studio_light, STUDIOLIGHT_EQUIRECT_RADIANCE_GPUTEXTURE); + DRW_shgroup_uniform_texture(grp, "matcapImage", wpd->studio_light->equirect_radiance_gputexture); + } +} + +void workbench_deferred_cache_init(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_PrivateData *wpd = stl->g_data; + DRWShadingGroup *grp; + const DRWContextState *draw_ctx = DRW_context_state_get(); + + Scene *scene = draw_ctx->scene; + + workbench_volume_cache_init(vedata); + + select_deferred_shaders(wpd); + + /* Deferred Mix Pass */ + { + workbench_private_data_get_light_direction(wpd, e_data.display.light_direction); + studiolight_update_light(wpd, e_data.display.light_direction); + + e_data.display.shadow_shift = scene->display.shadow_shift; + + if (SHADOW_ENABLED(wpd)) { + psl->composite_pass = DRW_pass_create( + "Composite", DRW_STATE_WRITE_COLOR | DRW_STATE_STENCIL_EQUAL); + grp = DRW_shgroup_create(wpd->composite_sh, psl->composite_pass); + workbench_composite_uniforms(wpd, grp); + DRW_shgroup_stencil_mask(grp, 0x00); + DRW_shgroup_uniform_float_copy(grp, "lightMultiplier", 1.0f); + DRW_shgroup_uniform_float(grp, "shadowMultiplier", &wpd->shadow_multiplier, 1); + DRW_shgroup_uniform_float(grp, "shadowShift", &scene->display.shadow_shift, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + + /* Stencil Shadow passes. */ +#ifdef DEBUG_SHADOW_VOLUME + DRWState depth_pass_state = DRW_STATE_DEPTH_LESS | DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE; + DRWState depth_fail_state = DRW_STATE_DEPTH_GREATER_EQUAL | DRW_STATE_WRITE_COLOR | DRW_STATE_ADDITIVE; +#else + DRWState depth_pass_state = DRW_STATE_DEPTH_LESS | DRW_STATE_WRITE_STENCIL_SHADOW_PASS; + DRWState depth_fail_state = DRW_STATE_DEPTH_LESS | DRW_STATE_WRITE_STENCIL_SHADOW_FAIL; +#endif + psl->shadow_depth_pass_pass = DRW_pass_create("Shadow Pass", depth_pass_state); + psl->shadow_depth_pass_mani_pass = DRW_pass_create("Shadow Pass Mani", depth_pass_state); + psl->shadow_depth_fail_pass = DRW_pass_create("Shadow Fail", depth_fail_state); + psl->shadow_depth_fail_mani_pass = DRW_pass_create("Shadow Fail Mani", depth_fail_state); + psl->shadow_depth_fail_caps_pass = DRW_pass_create("Shadow Fail Caps", depth_fail_state); + psl->shadow_depth_fail_caps_mani_pass = DRW_pass_create("Shadow Fail Caps Mani", depth_fail_state); + +#ifndef DEBUG_SHADOW_VOLUME + grp = DRW_shgroup_create(e_data.shadow_pass_sh, psl->shadow_depth_pass_pass); + DRW_shgroup_stencil_mask(grp, 0xFF); + grp = DRW_shgroup_create(e_data.shadow_pass_manifold_sh, psl->shadow_depth_pass_mani_pass); + DRW_shgroup_stencil_mask(grp, 0xFF); + grp = DRW_shgroup_create(e_data.shadow_fail_sh, psl->shadow_depth_fail_pass); + DRW_shgroup_stencil_mask(grp, 0xFF); + grp = DRW_shgroup_create(e_data.shadow_fail_manifold_sh, psl->shadow_depth_fail_mani_pass); + DRW_shgroup_stencil_mask(grp, 0xFF); + grp = DRW_shgroup_create(e_data.shadow_caps_sh, psl->shadow_depth_fail_caps_pass); + DRW_shgroup_stencil_mask(grp, 0xFF); + grp = DRW_shgroup_create(e_data.shadow_caps_manifold_sh, psl->shadow_depth_fail_caps_mani_pass); + DRW_shgroup_stencil_mask(grp, 0xFF); + + psl->composite_shadow_pass = DRW_pass_create("Composite Shadow", DRW_STATE_WRITE_COLOR | DRW_STATE_STENCIL_NEQUAL); + grp = DRW_shgroup_create(wpd->composite_sh, psl->composite_shadow_pass); + DRW_shgroup_stencil_mask(grp, 0x00); + workbench_composite_uniforms(wpd, grp); + DRW_shgroup_uniform_float(grp, "lightMultiplier", &wpd->shadow_multiplier, 1); + DRW_shgroup_uniform_float(grp, "shadowMultiplier", &wpd->shadow_multiplier, 1); + DRW_shgroup_uniform_float(grp, "shadowShift", &scene->display.shadow_shift, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); +#endif + + } + else { + psl->composite_pass = DRW_pass_create( + "Composite", DRW_STATE_WRITE_COLOR); + grp = DRW_shgroup_create(wpd->composite_sh, psl->composite_pass); + workbench_composite_uniforms(wpd, grp); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + } +} + +static WORKBENCH_MaterialData *get_or_create_material_data( + WORKBENCH_Data *vedata, Object *ob, Material *mat, Image *ima, int color_type) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_PrivateData *wpd = stl->g_data; + WORKBENCH_MaterialData *material; + WORKBENCH_ObjectData *engine_object_data = (WORKBENCH_ObjectData *)DRW_drawdata_ensure( + &ob->id, &draw_engine_workbench_solid, sizeof(WORKBENCH_ObjectData), &workbench_init_object_data, NULL); + WORKBENCH_MaterialData material_template; + const bool is_ghost = (ob->dtx & OB_DRAWXRAY); + + /* Solid */ + workbench_material_update_data(wpd, ob, mat, &material_template); + material_template.object_id = OBJECT_ID_PASS_ENABLED(wpd) ? engine_object_data->object_id : 1; + material_template.color_type = color_type; + material_template.ima = ima; + uint hash = workbench_material_get_hash(&material_template, is_ghost); + + material = BLI_ghash_lookup(wpd->material_hash, POINTER_FROM_UINT(hash)); + if (material == NULL) { + material = MEM_mallocN(sizeof(WORKBENCH_MaterialData), __func__); + material->shgrp = DRW_shgroup_create( + (color_type == V3D_SHADING_TEXTURE_COLOR) ? wpd->prepass_texture_sh: wpd->prepass_solid_sh, + (ob->dtx & OB_DRAWXRAY) ? psl->ghost_prepass_pass : psl->prepass_pass); + workbench_material_copy(material, &material_template); + DRW_shgroup_stencil_mask(material->shgrp, (ob->dtx & OB_DRAWXRAY) ? 0x00 : 0xFF); + DRW_shgroup_uniform_int(material->shgrp, "object_id", &material->object_id, 1); + workbench_material_shgroup_uniform(wpd, material->shgrp, material, ob); + + BLI_ghash_insert(wpd->material_hash, POINTER_FROM_UINT(hash), material); + } + return material; +} + +static void workbench_cache_populate_particles(WORKBENCH_Data *vedata, Object *ob) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_PrivateData *wpd = stl->g_data; + + for (ModifierData *md = ob->modifiers.first; md; md = md->next) { + if (md->type != eModifierType_ParticleSystem) { + continue; + } + ParticleSystem *psys = ((ParticleSystemModifierData *)md)->psys; + if (!psys_check_enabled(ob, psys, false)) { + continue; + } + if (!DRW_object_is_visible_psys_in_active_context(ob, psys)) { + continue; + } + ParticleSettings *part = psys->part; + const int draw_as = (part->draw_as == PART_DRAW_REND) ? part->ren_as : part->draw_as; + + if (draw_as == PART_DRAW_PATH) { + Image *image = NULL; + Material *mat = give_current_material(ob, part->omat); + ED_object_get_active_image(ob, part->omat, &image, NULL, NULL, NULL); + int color_type = workbench_material_determine_color_type(wpd, image, ob); + WORKBENCH_MaterialData *material = get_or_create_material_data(vedata, ob, mat, image, color_type); + + struct GPUShader *shader = (color_type != V3D_SHADING_TEXTURE_COLOR) ? + wpd->prepass_solid_hair_sh : + wpd->prepass_texture_hair_sh; + DRWShadingGroup *shgrp = DRW_shgroup_hair_create( + ob, psys, md, + (ob->dtx & OB_DRAWXRAY) ? psl->ghost_prepass_hair_pass : psl->prepass_hair_pass, + shader); + DRW_shgroup_stencil_mask(shgrp, (ob->dtx & OB_DRAWXRAY) ? 0x00 : 0xFF); + DRW_shgroup_uniform_int(shgrp, "object_id", &material->object_id, 1); + workbench_material_shgroup_uniform(wpd, shgrp, material, ob); + } + } +} + +void workbench_deferred_solid_cache_populate(WORKBENCH_Data *vedata, Object *ob) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_PrivateData *wpd = stl->g_data; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + + if (!DRW_object_is_renderable(ob)) + return; + + if (ob->type == OB_MESH) { + workbench_cache_populate_particles(vedata, ob); + } + + ModifierData *md; + if (((ob->base_flag & BASE_FROMDUPLI) == 0) && + (md = modifiers_findByType(ob, eModifierType_Smoke)) && + (modifier_isEnabled(scene, md, eModifierMode_Realtime)) && + (((SmokeModifierData *)md)->domain != NULL)) + { + workbench_volume_cache_populate(vedata, scene, ob, md); + return; /* Do not draw solid in this case. */ + } + + if (!DRW_object_is_visible_in_active_context(ob) || (ob->dt < OB_SOLID)) { + return; + } + + WORKBENCH_MaterialData *material; + if (ELEM(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { + const bool is_active = (ob == draw_ctx->obact); + const bool is_sculpt_mode = is_active && (draw_ctx->object_mode & OB_MODE_SCULPT) != 0; + const bool use_hide = is_active && DRW_object_use_hide_faces(ob); + bool is_drawn = false; + if (!is_sculpt_mode && TEXTURE_DRAWING_ENABLED(wpd) && ELEM(ob->type, OB_MESH)) { + const Mesh *me = ob->data; + if (me->mloopuv) { + const int materials_len = MAX2(1, (is_sculpt_mode ? 1 : ob->totcol)); + struct GPUMaterial **gpumat_array = BLI_array_alloca(gpumat_array, materials_len); + struct GPUBatch **geom_array = me->totcol ? DRW_cache_mesh_surface_texpaint_get(ob, use_hide) : NULL; + if (materials_len > 0 && geom_array) { + for (int i = 0; i < materials_len; i++) { + if (geom_array[i] == NULL) { + continue; + } + + Material *mat = give_current_material(ob, i + 1); + Image *image; + ED_object_get_active_image(ob, i + 1, &image, NULL, NULL, NULL); + int color_type = workbench_material_determine_color_type(wpd, image, ob); + material = get_or_create_material_data(vedata, ob, mat, image, color_type); + DRW_shgroup_call_object_add(material->shgrp, geom_array[i], ob); + } + is_drawn = true; + } + } + } + + /* Fallback from not drawn OB_TEXTURE mode or just OB_SOLID mode */ + if (!is_drawn) { + if (ELEM(wpd->shading.color_type, V3D_SHADING_SINGLE_COLOR, V3D_SHADING_RANDOM_COLOR)) { + /* No material split needed */ + struct GPUBatch *geom = DRW_cache_object_surface_get_ex(ob, use_hide); + if (geom) { + material = get_or_create_material_data(vedata, ob, NULL, NULL, wpd->shading.color_type); + if (is_sculpt_mode) { + DRW_shgroup_call_sculpt_add(material->shgrp, ob, ob->obmat); + } + else { + DRW_shgroup_call_object_add(material->shgrp, geom, ob); + } + } + } + else { /* MATERIAL colors */ + const int materials_len = MAX2(1, (is_sculpt_mode ? 1 : ob->totcol)); + struct GPUMaterial **gpumat_array = BLI_array_alloca(gpumat_array, materials_len); + for (int i = 0; i < materials_len; i++) { + gpumat_array[i] = NULL; + } + + struct GPUBatch **mat_geom = DRW_cache_object_surface_material_get( + ob, gpumat_array, materials_len, use_hide, NULL, NULL, NULL); + if (mat_geom) { + for (int i = 0; i < materials_len; ++i) { + if (mat_geom[i] == NULL) { + continue; + } + + Material *mat = give_current_material(ob, i + 1); + material = get_or_create_material_data(vedata, ob, mat, NULL, V3D_SHADING_MATERIAL_COLOR); + if (is_sculpt_mode) { + DRW_shgroup_call_sculpt_add(material->shgrp, ob, ob->obmat); + } + else { + DRW_shgroup_call_object_add(material->shgrp, mat_geom[i], ob); + } + } + } + } + } + + if (SHADOW_ENABLED(wpd) && (ob->display.flag & OB_SHOW_SHADOW)) { + bool is_manifold; + struct GPUBatch *geom_shadow = DRW_cache_object_edge_detection_get(ob, &is_manifold); + if (geom_shadow) { + if (is_sculpt_mode || use_hide) { + /* Currently unsupported in sculpt mode. We could revert to the slow + * method in this case but I'm not sure if it's a good idea given that + * sculpted meshes are heavy to begin with. */ + // DRW_shgroup_call_sculpt_add(wpd->shadow_shgrp, ob, ob->obmat); + } + else { + WORKBENCH_ObjectData *engine_object_data = (WORKBENCH_ObjectData *)DRW_drawdata_ensure( + &ob->id, &draw_engine_workbench_solid, sizeof(WORKBENCH_ObjectData), &workbench_init_object_data, NULL); + + if (studiolight_object_cast_visible_shadow(wpd, ob, engine_object_data)) { + + invert_m4_m4(ob->imat, ob->obmat); + mul_v3_mat3_m4v3(engine_object_data->shadow_dir, ob->imat, e_data.display.light_direction); + + DRWShadingGroup *grp; + bool use_shadow_pass_technique = !studiolight_camera_in_object_shadow(wpd, ob, engine_object_data); + + if (use_shadow_pass_technique) { + if (is_manifold) { + grp = DRW_shgroup_create(e_data.shadow_pass_manifold_sh, psl->shadow_depth_pass_mani_pass); + } + else { + grp = DRW_shgroup_create(e_data.shadow_pass_sh, psl->shadow_depth_pass_pass); + } + DRW_shgroup_uniform_vec3(grp, "lightDirection", engine_object_data->shadow_dir, 1); + DRW_shgroup_uniform_float_copy(grp, "lightDistance", 1e5f); + DRW_shgroup_call_add(grp, geom_shadow, ob->obmat); +#ifdef DEBUG_SHADOW_VOLUME + DRW_debug_bbox(&engine_object_data->shadow_bbox, (float[4]){1.0f, 0.0f, 0.0f, 1.0f}); +#endif + } + else { + float extrude_distance = studiolight_object_shadow_distance(wpd, ob, engine_object_data); + + /* TODO(fclem): only use caps if they are in the view frustum. */ + const bool need_caps = true; + if (need_caps) { + if (is_manifold) { + grp = DRW_shgroup_create(e_data.shadow_caps_manifold_sh, psl->shadow_depth_fail_caps_mani_pass); + } + else { + grp = DRW_shgroup_create(e_data.shadow_caps_sh, psl->shadow_depth_fail_caps_pass); + } + DRW_shgroup_uniform_vec3(grp, "lightDirection", engine_object_data->shadow_dir, 1); + DRW_shgroup_uniform_float_copy(grp, "lightDistance", extrude_distance); + DRW_shgroup_call_add(grp, DRW_cache_object_surface_get(ob), ob->obmat); + } + + if (is_manifold) { + grp = DRW_shgroup_create(e_data.shadow_fail_manifold_sh, psl->shadow_depth_fail_mani_pass); + } + else { + grp = DRW_shgroup_create(e_data.shadow_fail_sh, psl->shadow_depth_fail_pass); + } + DRW_shgroup_uniform_vec3(grp, "lightDirection", engine_object_data->shadow_dir, 1); + DRW_shgroup_uniform_float_copy(grp, "lightDistance", extrude_distance); + DRW_shgroup_call_add(grp, geom_shadow, ob->obmat); +#ifdef DEBUG_SHADOW_VOLUME + DRW_debug_bbox(&engine_object_data->shadow_bbox, (float[4]){0.0f, 1.0f, 0.0f, 1.0f}); +#endif + } + } + } + } + } + } +} + +void workbench_deferred_cache_finish(WORKBENCH_Data *UNUSED(vedata)) +{ +} + +void workbench_deferred_draw_background(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_PrivateData *wpd = stl->g_data; + const float clear_depth = 1.0f; + const float clear_color[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + uint clear_stencil = 0x00; + + DRW_stats_group_start("Clear Background"); + GPU_framebuffer_bind(fbl->prepass_fb); + int clear_bits = GPU_DEPTH_BIT | GPU_COLOR_BIT; + SET_FLAG_FROM_TEST(clear_bits, SHADOW_ENABLED(wpd), GPU_STENCIL_BIT); + GPU_framebuffer_clear(fbl->prepass_fb, clear_bits, clear_color, clear_depth, clear_stencil); + DRW_stats_group_end(); +} + +void workbench_deferred_draw_scene(WORKBENCH_Data *vedata) +{ + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_PrivateData *wpd = stl->g_data; + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + + if (TAA_ENABLED(wpd)) { + workbench_taa_draw_scene_start(vedata); + } + + /* clear in background */ + GPU_framebuffer_bind(fbl->prepass_fb); + DRW_draw_pass(psl->prepass_pass); + DRW_draw_pass(psl->prepass_hair_pass); + + if (GHOST_ENABLED(psl)) { + /* meh, late init to not request a depth buffer we won't use. */ + workbench_setup_ghost_framebuffer(fbl); + + GPU_framebuffer_bind(fbl->ghost_prepass_fb); + GPU_framebuffer_clear_depth(fbl->ghost_prepass_fb, 1.0f); + DRW_draw_pass(psl->ghost_prepass_pass); + DRW_draw_pass(psl->ghost_prepass_hair_pass); + + GPU_framebuffer_bind(dfbl->depth_only_fb); + DRW_draw_pass(psl->ghost_resolve_pass); + } + + if (SSAO_ENABLED(wpd) || CURVATURE_ENABLED(wpd)) { + GPU_framebuffer_bind(fbl->cavity_fb); + DRW_draw_pass(psl->cavity_pass); + } + + if (SHADOW_ENABLED(wpd)) { +#ifdef DEBUG_SHADOW_VOLUME + GPU_framebuffer_bind(fbl->composite_fb); + DRW_draw_pass(psl->composite_pass); +#else + GPU_framebuffer_bind(dfbl->depth_only_fb); +#endif + DRW_draw_pass(psl->shadow_depth_pass_pass); + DRW_draw_pass(psl->shadow_depth_pass_mani_pass); + DRW_draw_pass(psl->shadow_depth_fail_pass); + DRW_draw_pass(psl->shadow_depth_fail_mani_pass); + DRW_draw_pass(psl->shadow_depth_fail_caps_pass); + DRW_draw_pass(psl->shadow_depth_fail_caps_mani_pass); + + if (GHOST_ENABLED(psl)) { + /* We need to set the stencil buffer to 0 where Ghost objects + * else they will get shadow and even badly shadowed. */ + DRW_pass_state_set(psl->ghost_prepass_pass, DRW_STATE_DEPTH_EQUAL | DRW_STATE_WRITE_STENCIL); + DRW_pass_state_set(psl->ghost_prepass_hair_pass, DRW_STATE_DEPTH_EQUAL | DRW_STATE_WRITE_STENCIL); + + DRW_draw_pass(psl->ghost_prepass_pass); + DRW_draw_pass(psl->ghost_prepass_hair_pass); + } +#ifndef DEBUG_SHADOW_VOLUME + GPU_framebuffer_bind(fbl->composite_fb); + DRW_draw_pass(psl->composite_pass); + DRW_draw_pass(psl->composite_shadow_pass); +#endif + } + else { + GPU_framebuffer_bind(fbl->composite_fb); + DRW_draw_pass(psl->composite_pass); + } + + /* TODO(fclem): only enable when needed (when there is overlays). */ + if (GHOST_ENABLED(psl)) { + /* In order to not draw on top of ghost objects, we clear the stencil + * to 0xFF and the ghost object to 0x00 and only draw overlays on top if + * stencil is not 0. */ + GPU_framebuffer_bind(dfbl->depth_only_fb); + GPU_framebuffer_clear_stencil(dfbl->depth_only_fb, 0xFF); + + DRW_pass_state_set(psl->ghost_prepass_pass, DRW_STATE_DEPTH_EQUAL | DRW_STATE_WRITE_STENCIL); + DRW_pass_state_set(psl->ghost_prepass_hair_pass, DRW_STATE_DEPTH_EQUAL | DRW_STATE_WRITE_STENCIL); + + DRW_draw_pass(psl->ghost_prepass_pass); + DRW_draw_pass(psl->ghost_prepass_hair_pass); + } + + if (wpd->volumes_do) { + GPU_framebuffer_bind(fbl->volume_fb); + DRW_draw_pass(psl->volume_pass); + } + + workbench_aa_draw_pass(vedata, e_data.composite_buffer_tx); +} + +void workbench_deferred_draw_finish(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PrivateData *wpd = stl->g_data; + + workbench_private_data_free(wpd); + workbench_volume_smoke_textures_free(wpd); +} diff --git a/source/blender/draw/engines/workbench/workbench_effect_aa.c b/source/blender/draw/engines/workbench/workbench_effect_aa.c new file mode 100644 index 00000000000..deb9a517f96 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_effect_aa.c @@ -0,0 +1,109 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_effect_aa.c + * \ingroup draw_engine + */ + +#include "ED_screen.h" + +#include "workbench_private.h" + + +void workbench_aa_create_pass(WORKBENCH_Data *vedata, GPUTexture **tx) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PrivateData *wpd = stl->g_data; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_EffectInfo *effect_info = stl->effects; + const DRWContextState *draw_ctx = DRW_context_state_get(); + + if (draw_ctx->evil_C != NULL) { + struct wmWindowManager *wm = CTX_wm_manager(draw_ctx->evil_C); + wpd->is_playback = ED_screen_animation_playing(wm) != NULL; + } + else { + wpd->is_playback = false; + } + + if (TAA_ENABLED(wpd)) { + psl->effect_aa_pass = workbench_taa_create_pass(vedata, tx); + } + else if (FXAA_ENABLED(wpd)) { + psl->effect_aa_pass = workbench_fxaa_create_pass(tx); + effect_info->jitter_index = 0; + } + else { + psl->effect_aa_pass = NULL; + } +} + +static void workspace_aa_draw_transform(GPUTexture *tx, WORKBENCH_PrivateData *wpd) +{ + if (DRW_state_is_image_render()) { + /* Linear result for render. */ + DRW_transform_none(tx); + } + else { + /* Display space result for viewport. */ + DRW_transform_to_display(tx, wpd->use_color_view_settings); + } +} + +void workbench_aa_draw_pass(WORKBENCH_Data *vedata, GPUTexture *tx) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PrivateData *wpd = stl->g_data; + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_EffectInfo *effect_info = stl->effects; + + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + if (FXAA_ENABLED(wpd)) { + GPU_framebuffer_bind(fbl->effect_fb); + workspace_aa_draw_transform(tx, wpd); + GPU_framebuffer_bind(dfbl->color_only_fb); + DRW_draw_pass(psl->effect_aa_pass); + } + else if (TAA_ENABLED(wpd)) { + /* + * when drawing the first TAA frame, we transform directly to the + * color_only_fb as the TAA shader is just performing a direct copy. + * the workbench_taa_draw_screen_end will fill the history buffer + * for the other iterations. + */ + if (effect_info->jitter_index == 1) { + GPU_framebuffer_bind(dfbl->color_only_fb); + workspace_aa_draw_transform(tx, wpd); + } + else { + GPU_framebuffer_bind(fbl->effect_fb); + workspace_aa_draw_transform(tx, wpd); + GPU_framebuffer_bind(dfbl->color_only_fb); + DRW_draw_pass(psl->effect_aa_pass); + } + workbench_taa_draw_scene_end(vedata); + } + else { + GPU_framebuffer_bind(dfbl->color_only_fb); + workspace_aa_draw_transform(tx, wpd); + } +} diff --git a/source/blender/draw/engines/workbench/workbench_effect_fxaa.c b/source/blender/draw/engines/workbench/workbench_effect_fxaa.c new file mode 100644 index 00000000000..1beb35e6440 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_effect_fxaa.c @@ -0,0 +1,62 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_effect_fxaa.c + * \ingroup draw_engine + */ +#include "workbench_private.h" + +/* *********** STATIC *********** */ +static struct { + struct GPUShader *effect_fxaa_sh; +} e_data = {NULL}; + +/* Shaders */ +extern char datatoc_common_fxaa_lib_glsl[]; +extern char datatoc_common_fullscreen_vert_glsl[]; +extern char datatoc_workbench_effect_fxaa_frag_glsl[]; + +/* *********** Functions *********** */ +void workbench_fxaa_engine_init(void) +{ + if (e_data.effect_fxaa_sh == NULL) { + e_data.effect_fxaa_sh = DRW_shader_create_with_lib( + datatoc_common_fullscreen_vert_glsl, NULL, + datatoc_workbench_effect_fxaa_frag_glsl, + datatoc_common_fxaa_lib_glsl, + NULL); + } +} + +DRWPass *workbench_fxaa_create_pass(GPUTexture **color_buffer_tx) +{ + DRWPass *pass = DRW_pass_create("Effect FXAA", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.effect_fxaa_sh, pass); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", color_buffer_tx); + DRW_shgroup_uniform_vec2(grp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + return pass; +} + +void workbench_fxaa_engine_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.effect_fxaa_sh); +} diff --git a/source/blender/draw/engines/workbench/workbench_effect_taa.c b/source/blender/draw/engines/workbench/workbench_effect_taa.c new file mode 100644 index 00000000000..403338d55c4 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_effect_taa.c @@ -0,0 +1,302 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_effect_taa.c + * \ingroup draw_engine + */ + + +#include "workbench_private.h" +#include "BLI_jitter_2d.h" + +static struct { + struct GPUShader *effect_taa_sh; + float jitter_8[8][2]; + float jitter_16[16][2]; + float jitter_32[32][2]; +} e_data = {NULL}; + +extern char datatoc_workbench_effect_taa_frag_glsl[]; + + +static void workbench_taa_jitter_init_order(float (*table)[2], int num) +{ + BLI_jitter_init(table, num); + + /* find closest element to center */ + int closest_index = 0; + float closest_squared_distance = 1.0f; + + for (int index = 0; index < num; index++) { + const float squared_dist = SQUARE(table[index][0]) + SQUARE(table[index][1]); + if (squared_dist < closest_squared_distance) { + closest_squared_distance = squared_dist; + closest_index = index; + } + } + + /* move jitter table so that closest sample is in center */ + for (int index = 0; index < num; index++) { + sub_v2_v2(table[index], table[closest_index]); + mul_v2_fl(table[index], 2.0f); + } + + /* swap center sample to the start of the table */ + if (closest_index != 0) { + swap_v2_v2(table[0], table[closest_index]); + } + + /* sort list based on furtest distance with previous */ + for (int i = 0; i < num - 2; i++) { + float f_squared_dist = 0.0; + int f_index = i; + for (int j = i + 1; j < num; j++) { + const float squared_dist = SQUARE(table[i][0] - table[j][0]) + SQUARE(table[i][1] - table[j][1]); + if (squared_dist > f_squared_dist) { + f_squared_dist = squared_dist; + f_index = j; + } + } + swap_v2_v2(table[i + 1], table[f_index]); + } +} + + +static void workbench_taa_jitter_init(void) +{ + workbench_taa_jitter_init_order(e_data.jitter_8, 8); + workbench_taa_jitter_init_order(e_data.jitter_16, 16); + workbench_taa_jitter_init_order(e_data.jitter_32, 32); +} + +int workbench_taa_calculate_num_iterations(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PrivateData *wpd = stl->g_data; + int result = 1; + if (TAA_ENABLED(wpd)) { + if (DRW_state_is_image_render()) { + const Scene *scene = DRW_context_state_get()->scene; + result = (scene->r.mode & R_OSA) ? scene->r.osa : 1; + } + else if (IN_RANGE_INCL( + wpd->user_preferences->gpu_viewport_quality, + GPU_VIEWPORT_QUALITY_TAA8, GPU_VIEWPORT_QUALITY_TAA16)) + { + result = 8; + } + else if (IN_RANGE_INCL( + wpd->user_preferences->gpu_viewport_quality, + GPU_VIEWPORT_QUALITY_TAA16, GPU_VIEWPORT_QUALITY_TAA32)) + { + result = 16; + } + else { + result = 32; + } + } + return result; +} + +void workbench_taa_engine_init(WORKBENCH_Data *vedata) +{ + WORKBENCH_EffectInfo *effect_info = vedata->stl->effects; + const DRWContextState *draw_ctx = DRW_context_state_get(); + RegionView3D *rv3d = draw_ctx->rv3d; + + if (e_data.effect_taa_sh == NULL) { + e_data.effect_taa_sh = DRW_shader_create_fullscreen(datatoc_workbench_effect_taa_frag_glsl, NULL); + workbench_taa_jitter_init(); + } + + /* reset complete drawing when navigating. */ + if (effect_info->jitter_index != 0) { + if (rv3d && rv3d->rflag & RV3D_NAVIGATING) { + effect_info->jitter_index = 0; + } + } + + if (effect_info->view_updated) { + effect_info->jitter_index = 0; + effect_info->view_updated = false; + } + + { + float view[4][4]; + float win[4][4]; + DRW_viewport_matrix_get(view, DRW_MAT_VIEW); + DRW_viewport_matrix_get(win, DRW_MAT_WIN); + mul_m4_m4m4(effect_info->curr_mat, view, win); + if (!equals_m4m4(effect_info->curr_mat, effect_info->last_mat)) { + effect_info->jitter_index = 0; + } + } +} + +void workbench_taa_engine_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.effect_taa_sh); +} + + +DRWPass *workbench_taa_create_pass(WORKBENCH_Data *vedata, GPUTexture **color_buffer_tx) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_TextureList *txl = vedata->txl; + WORKBENCH_EffectInfo *effect_info = stl->effects; + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_PrivateData *wpd = stl->g_data; + /* + * jitter_index is not updated yet. This will be done in during draw phase. + * so for now it is inversed. + */ + int previous_jitter_index = effect_info->jitter_index; + + { + DRW_texture_ensure_fullscreen_2D(&txl->history_buffer_tx, GPU_RGBA16F, 0); + DRW_texture_ensure_fullscreen_2D(&txl->depth_buffer_tx, GPU_DEPTH24_STENCIL8, 0); + } + + { + GPU_framebuffer_ensure_config(&fbl->effect_taa_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(txl->history_buffer_tx), + }); + GPU_framebuffer_ensure_config(&fbl->depth_buffer_fb, { + GPU_ATTACHMENT_TEXTURE(txl->depth_buffer_tx), + }); + } + + + DRWPass *pass = DRW_pass_create("Effect TAA", DRW_STATE_WRITE_COLOR); + DRWShadingGroup *grp = DRW_shgroup_create(e_data.effect_taa_sh, pass); + DRW_shgroup_uniform_texture_ref(grp, "colorBuffer", color_buffer_tx); + DRW_shgroup_uniform_texture_ref(grp, "historyBuffer", &txl->history_buffer_tx); + DRW_shgroup_uniform_float(grp, "mixFactor", &effect_info->taa_mix_factor, 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + + /* + * Set the offset for the cavity shader so every iteration different + * samples will be selected + */ + wpd->ssao_params[3] = previous_jitter_index; + + return pass; +} + +void workbench_taa_draw_scene_start(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_EffectInfo *effect_info = stl->effects; + const float *viewport_size = DRW_viewport_size_get(); + int num_samples = 8; + float (*samples)[2]; + float mix_factor; + + num_samples = workbench_taa_calculate_num_iterations(vedata); + switch (num_samples) { + default: + case 8: + samples = e_data.jitter_8; + break; + case 16: + samples = e_data.jitter_16; + break; + case 32: + samples = e_data.jitter_32; + break; + } + + mix_factor = 1.0f / (effect_info->jitter_index + 1); + + const int bitmask = num_samples - 1; + const int jitter_index = effect_info->jitter_index; + const float *transform_offset = samples[jitter_index]; + effect_info->jitter_index = (jitter_index + 1) & bitmask; + + /* construct new matrices from transform delta */ + float viewmat[4][4]; + float persmat[4][4]; + DRW_viewport_matrix_get(viewmat, DRW_MAT_VIEW); + DRW_viewport_matrix_get(persmat, DRW_MAT_PERS); + DRW_viewport_matrix_get(effect_info->override_winmat, DRW_MAT_WIN); + + window_translate_m4( + effect_info->override_winmat, persmat, + transform_offset[0] / viewport_size[0], + transform_offset[1] / viewport_size[1]); + + mul_m4_m4m4(effect_info->override_persmat, effect_info->override_winmat, viewmat); + invert_m4_m4(effect_info->override_persinv, effect_info->override_persmat); + invert_m4_m4(effect_info->override_wininv, effect_info->override_winmat); + + DRW_viewport_matrix_override_set(effect_info->override_persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(effect_info->override_persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(effect_info->override_winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(effect_info->override_wininv, DRW_MAT_WININV); + + /* weight the mix factor by the jitter index */ + effect_info->taa_mix_factor = mix_factor; +} + +void workbench_taa_draw_scene_end(WORKBENCH_Data *vedata) +{ + /* + * If first frame than the offset is 0.0 and its depth is the depth buffer to use + * for the rest of the draw engines. We store it in a persistent buffer. + * + * If it is not the first frame we copy the persistent buffer back to the + * default depth buffer + */ + const WORKBENCH_StorageList *stl = vedata->stl; + const WORKBENCH_FramebufferList *fbl = vedata->fbl; + const DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + WORKBENCH_EffectInfo *effect_info = stl->effects; + + if (effect_info->jitter_index == 1) { + GPU_framebuffer_blit(dfbl->depth_only_fb, 0, fbl->depth_buffer_fb, 0, GPU_DEPTH_BIT); + } + else { + GPU_framebuffer_blit(fbl->depth_buffer_fb, 0, dfbl->depth_only_fb, 0, GPU_DEPTH_BIT); + } + + GPU_framebuffer_blit(dfbl->color_only_fb, 0, fbl->effect_taa_fb, 0, GPU_COLOR_BIT); + + if (!DRW_state_is_image_render()) { + DRW_viewport_matrix_override_unset_all(); + } + + copy_m4_m4(effect_info->last_mat, effect_info->curr_mat); + if (effect_info->jitter_index != 0 && !DRW_state_is_image_render()) { + DRW_viewport_request_redraw(); + } +} + +void workbench_taa_view_updated(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + if (stl) { + WORKBENCH_EffectInfo *effect_info = stl->effects; + if (effect_info) { + effect_info->view_updated = true; + } + } +} diff --git a/source/blender/draw/engines/workbench/workbench_engine.c b/source/blender/draw/engines/workbench/workbench_engine.c new file mode 100644 index 00000000000..180932b9b64 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_engine.c @@ -0,0 +1,47 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_engine.c + * \ingroup draw_engine + * + * Simple engine for drawing color and/or depth. + * When we only need simple flat shaders. + */ + +#include "DRW_render.h" + +#include "workbench_engine.h" +#include "workbench_private.h" + +#define WORKBENCH_ENGINE "BLENDER_WORKBENCH" + +/* Note: currently unused, we may want to register so we can see this when debugging the view. */ +RenderEngineType DRW_engine_viewport_workbench_type = { + NULL, NULL, + WORKBENCH_ENGINE, N_("Workbench"), RE_INTERNAL, + NULL, &DRW_render_to_image, NULL, NULL, NULL, NULL, + &workbench_render_update_passes, + &draw_engine_workbench_solid, + {NULL, NULL, NULL} +}; + + +#undef WORKBENCH_ENGINE diff --git a/source/blender/draw/engines/workbench/workbench_engine.h b/source/blender/draw/engines/workbench/workbench_engine.h new file mode 100644 index 00000000000..a7f168db093 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_engine.h @@ -0,0 +1,33 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_engine.h + * \ingroup draw_engine + */ + +#ifndef __WORKBENCH_ENGINE_H__ +#define __WORKBENCH_ENGINE_H__ + +extern DrawEngineType draw_engine_workbench_solid; +extern DrawEngineType draw_engine_workbench_transparent; +extern RenderEngineType DRW_engine_viewport_workbench_type; + +#endif /* __WORKBENCH_ENGINE_H__ */ diff --git a/source/blender/draw/engines/workbench/workbench_forward.c b/source/blender/draw/engines/workbench/workbench_forward.c new file mode 100644 index 00000000000..3a5e592fa69 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_forward.c @@ -0,0 +1,661 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_forward.c + * \ingroup draw_engine + */ + +#include "workbench_private.h" + +#include "BIF_gl.h" + +#include "BLI_alloca.h" +#include "BLI_dynstr.h" +#include "BLI_utildefines.h" + +#include "BKE_node.h" +#include "BKE_particle.h" +#include "BKE_modifier.h" + +#include "DNA_image_types.h" +#include "DNA_mesh_types.h" +#include "DNA_modifier_types.h" +#include "DNA_node_types.h" + +#include "ED_uvedit.h" + +#include "GPU_shader.h" +#include "GPU_texture.h" + +#include "UI_resources.h" + +/* *********** STATIC *********** */ +static struct { + struct GPUShader *composite_sh_cache[MAX_SHADERS]; + struct GPUShader *transparent_accum_sh_cache[MAX_SHADERS]; + struct GPUShader *object_outline_sh; + struct GPUShader *object_outline_texture_sh; + struct GPUShader *object_outline_hair_sh; + struct GPUShader *checker_depth_sh; + + struct GPUTexture *object_id_tx; /* ref only, not alloced */ + struct GPUTexture *transparent_accum_tx; /* ref only, not alloced */ + struct GPUTexture *transparent_revealage_tx; /* ref only, not alloced */ + struct GPUTexture *composite_buffer_tx; /* ref only, not alloced */ + + int next_object_id; +} e_data = {{NULL}}; + +/* Shaders */ +extern char datatoc_common_hair_lib_glsl[]; + +extern char datatoc_workbench_forward_composite_frag_glsl[]; +extern char datatoc_workbench_forward_depth_frag_glsl[]; +extern char datatoc_workbench_forward_transparent_accum_frag_glsl[]; +extern char datatoc_workbench_data_lib_glsl[]; +extern char datatoc_workbench_background_lib_glsl[]; +extern char datatoc_workbench_checkerboard_depth_frag_glsl[]; +extern char datatoc_workbench_object_outline_lib_glsl[]; +extern char datatoc_workbench_curvature_lib_glsl[]; +extern char datatoc_workbench_prepass_vert_glsl[]; +extern char datatoc_workbench_common_lib_glsl[]; +extern char datatoc_workbench_world_light_lib_glsl[]; + +/* static functions */ +static char *workbench_build_forward_vert(bool is_hair) +{ + char *str = NULL; + if (!is_hair) { + return BLI_strdup(datatoc_workbench_prepass_vert_glsl); + } + + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_common_hair_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_prepass_vert_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static char *workbench_build_forward_transparent_accum_frag(void) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_workbench_data_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_common_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_world_light_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_forward_transparent_accum_frag_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static char *workbench_build_forward_composite_frag(void) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + + BLI_dynstr_append(ds, datatoc_workbench_data_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_common_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_background_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_object_outline_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_curvature_lib_glsl); + BLI_dynstr_append(ds, datatoc_workbench_forward_composite_frag_glsl); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +static void workbench_init_object_data(DrawData *dd) +{ + WORKBENCH_ObjectData *data = (WORKBENCH_ObjectData *)dd; + data->object_id = ((e_data.next_object_id++) & 0xff) + 1; +} + +static WORKBENCH_MaterialData *get_or_create_material_data( + WORKBENCH_Data *vedata, Object *ob, Material *mat, Image *ima, int color_type) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_PrivateData *wpd = stl->g_data; + WORKBENCH_MaterialData *material; + WORKBENCH_ObjectData *engine_object_data = (WORKBENCH_ObjectData *)DRW_drawdata_ensure( + &ob->id, &draw_engine_workbench_solid, sizeof(WORKBENCH_ObjectData), &workbench_init_object_data, NULL); + WORKBENCH_MaterialData material_template; + DRWShadingGroup *grp; + + /* Solid */ + workbench_material_update_data(wpd, ob, mat, &material_template); + material_template.object_id = OBJECT_ID_PASS_ENABLED(wpd) ? engine_object_data->object_id : 1; + material_template.color_type = color_type; + material_template.ima = ima; + uint hash = workbench_material_get_hash(&material_template, false); + + material = BLI_ghash_lookup(wpd->material_hash, POINTER_FROM_UINT(hash)); + if (material == NULL) { + material = MEM_mallocN(sizeof(WORKBENCH_MaterialData), __func__); + + /* transparent accum */ + grp = DRW_shgroup_create( + color_type == V3D_SHADING_TEXTURE_COLOR ? wpd->transparent_accum_texture_sh: wpd->transparent_accum_sh, + psl->transparent_accum_pass); + DRW_shgroup_uniform_block(grp, "world_block", wpd->world_ubo); + DRW_shgroup_uniform_float(grp, "alpha", &wpd->shading.xray_alpha, 1); + DRW_shgroup_uniform_vec4(grp, "viewvecs[0]", (float *)wpd->viewvecs, 3); + workbench_material_copy(material, &material_template); + if (STUDIOLIGHT_TYPE_MATCAP_ENABLED(wpd)) { + BKE_studiolight_ensure_flag(wpd->studio_light, STUDIOLIGHT_EQUIRECT_RADIANCE_GPUTEXTURE); + DRW_shgroup_uniform_texture(grp, "matcapImage", wpd->studio_light->equirect_radiance_gputexture ); + } + if (SPECULAR_HIGHLIGHT_ENABLED(wpd) || MATCAP_ENABLED(wpd)) { + DRW_shgroup_uniform_vec2(grp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1); + } + + workbench_material_shgroup_uniform(wpd, grp, material, ob); + material->shgrp = grp; + + /* Depth */ + if (workbench_material_determine_color_type(wpd, material->ima, ob) == V3D_SHADING_TEXTURE_COLOR) { + material->shgrp_object_outline = DRW_shgroup_create( + e_data.object_outline_texture_sh, psl->object_outline_pass); + GPUTexture *tex = GPU_texture_from_blender(material->ima, NULL, GL_TEXTURE_2D, false, 0.0f); + DRW_shgroup_uniform_texture(material->shgrp_object_outline, "image", tex); + } + else { + material->shgrp_object_outline = DRW_shgroup_create( + e_data.object_outline_sh, psl->object_outline_pass); + } + material->object_id = engine_object_data->object_id; + DRW_shgroup_uniform_int(material->shgrp_object_outline, "object_id", &material->object_id, 1); + BLI_ghash_insert(wpd->material_hash, POINTER_FROM_UINT(hash), material); + } + return material; +} + +static void ensure_forward_shaders(WORKBENCH_PrivateData *wpd, int index, bool use_textures, bool is_hair) +{ + if (e_data.composite_sh_cache[index] == NULL && !use_textures && !is_hair) { + char *defines = workbench_material_build_defines(wpd, use_textures, is_hair); + char *composite_frag = workbench_build_forward_composite_frag(); + e_data.composite_sh_cache[index] = DRW_shader_create_fullscreen(composite_frag, defines); + MEM_freeN(composite_frag); + MEM_freeN(defines); + } + + if (e_data.transparent_accum_sh_cache[index] == NULL) { + char *defines = workbench_material_build_defines(wpd, use_textures, is_hair); + char *transparent_accum_vert = workbench_build_forward_vert(is_hair); + char *transparent_accum_frag = workbench_build_forward_transparent_accum_frag(); + e_data.transparent_accum_sh_cache[index] = DRW_shader_create( + transparent_accum_vert, NULL, + transparent_accum_frag, defines); + MEM_freeN(transparent_accum_vert); + MEM_freeN(transparent_accum_frag); + MEM_freeN(defines); + } +} + +static void select_forward_shaders(WORKBENCH_PrivateData *wpd) +{ + int index_solid = workbench_material_get_shader_index(wpd, false, false); + int index_solid_hair = workbench_material_get_shader_index(wpd, false, true); + int index_texture = workbench_material_get_shader_index(wpd, true, false); + int index_texture_hair = workbench_material_get_shader_index(wpd, true, true); + + ensure_forward_shaders(wpd, index_solid, false, false); + ensure_forward_shaders(wpd, index_solid_hair, false, true); + ensure_forward_shaders(wpd, index_texture, true, false); + ensure_forward_shaders(wpd, index_texture_hair, true, true); + + wpd->composite_sh = e_data.composite_sh_cache[index_solid]; + wpd->transparent_accum_sh = e_data.transparent_accum_sh_cache[index_solid]; + wpd->transparent_accum_hair_sh = e_data.transparent_accum_sh_cache[index_solid_hair]; + wpd->transparent_accum_texture_sh = e_data.transparent_accum_sh_cache[index_texture]; + wpd->transparent_accum_texture_hair_sh = e_data.transparent_accum_sh_cache[index_texture_hair]; +} + +/* public functions */ +void workbench_forward_engine_init(WORKBENCH_Data *vedata) +{ + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_StorageList *stl = vedata->stl; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + const DRWContextState *draw_ctx = DRW_context_state_get(); + DRWShadingGroup *grp; + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_callocN(sizeof(*stl->g_data), __func__); + } + if (!stl->effects) { + stl->effects = MEM_callocN(sizeof(*stl->effects), __func__); + workbench_effect_info_init(stl->effects); + } + WORKBENCH_PrivateData *wpd = stl->g_data; + workbench_private_data_init(wpd); + float light_direction[3]; + workbench_private_data_get_light_direction(wpd, light_direction); + + if (!e_data.next_object_id) { + e_data.next_object_id = 1; + memset(e_data.composite_sh_cache, 0x00, sizeof(struct GPUShader *) * MAX_SHADERS); + memset(e_data.transparent_accum_sh_cache, 0x00, sizeof(struct GPUShader *) * MAX_SHADERS); + + char *defines = workbench_material_build_defines(wpd, false, false); + char *defines_texture = workbench_material_build_defines(wpd, true, false); + char *defines_hair = workbench_material_build_defines(wpd, false, true); + char *forward_vert = workbench_build_forward_vert(false); + char *forward_hair_vert = workbench_build_forward_vert(true); + e_data.object_outline_sh = DRW_shader_create( + forward_vert, NULL, + datatoc_workbench_forward_depth_frag_glsl, defines); + e_data.object_outline_texture_sh = DRW_shader_create( + forward_vert, NULL, + datatoc_workbench_forward_depth_frag_glsl, defines_texture); + e_data.object_outline_hair_sh = DRW_shader_create( + forward_hair_vert, NULL, + datatoc_workbench_forward_depth_frag_glsl, defines_hair); + + + e_data.checker_depth_sh = DRW_shader_create_fullscreen( + datatoc_workbench_checkerboard_depth_frag_glsl, NULL); + MEM_freeN(forward_hair_vert); + MEM_freeN(forward_vert); + MEM_freeN(defines); + MEM_freeN(defines_texture); + MEM_freeN(defines_hair); + } + workbench_volume_engine_init(); + workbench_fxaa_engine_init(); + workbench_taa_engine_init(vedata); + + select_forward_shaders(wpd); + + const float *viewport_size = DRW_viewport_size_get(); + const int size[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + + e_data.object_id_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_R32UI, &draw_engine_workbench_transparent); + e_data.transparent_accum_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_RGBA16F, &draw_engine_workbench_transparent); + e_data.transparent_revealage_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_R16F, &draw_engine_workbench_transparent); + e_data.composite_buffer_tx = DRW_texture_pool_query_2D( + size[0], size[1], GPU_R11F_G11F_B10F, &draw_engine_workbench_transparent); + + GPU_framebuffer_ensure_config(&fbl->object_outline_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(e_data.object_id_tx), + }); + GPU_framebuffer_ensure_config(&fbl->transparent_accum_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(e_data.transparent_accum_tx), + GPU_ATTACHMENT_TEXTURE(e_data.transparent_revealage_tx), + }); + GPU_framebuffer_ensure_config(&fbl->composite_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(e_data.composite_buffer_tx), + }); + GPU_framebuffer_ensure_config(&fbl->effect_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(e_data.transparent_accum_tx), + }); + + workbench_volume_cache_init(vedata); + const bool do_cull = (draw_ctx->v3d && (draw_ctx->v3d->flag2 & V3D_BACKFACE_CULLING)); + const int cull_state = (do_cull) ? DRW_STATE_CULL_BACK : 0; + + /* Transparency Accum */ + { + int state = DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_OIT | cull_state; + psl->transparent_accum_pass = DRW_pass_create("Transparent Accum", state); + } + /* Depth */ + { + int state = DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS | cull_state; + psl->object_outline_pass = DRW_pass_create("Object Outline Pass", state); + } + /* Composite */ + { + int state = DRW_STATE_WRITE_COLOR; + psl->composite_pass = DRW_pass_create("Composite", state); + + grp = DRW_shgroup_create(wpd->composite_sh, psl->composite_pass); + if (OBJECT_ID_PASS_ENABLED(wpd)) { + DRW_shgroup_uniform_texture_ref(grp, "objectId", &e_data.object_id_tx); + } + DRW_shgroup_uniform_texture_ref(grp, "transparentAccum", &e_data.transparent_accum_tx); + DRW_shgroup_uniform_texture_ref(grp, "transparentRevealage", &e_data.transparent_revealage_tx); + DRW_shgroup_uniform_block(grp, "world_block", wpd->world_ubo); + DRW_shgroup_uniform_vec2(grp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + } + + { + workbench_aa_create_pass(vedata, &e_data.transparent_accum_tx); + } + + /* Checker Depth */ + { + static float noise_offset = 0.0f; + float blend_threshold = 0.0f; + + if (DRW_state_is_image_render()) { + /* TODO: Should be based on the number of samples used for render. */ + noise_offset = fmodf(noise_offset + 1.0f / 8.0f, 1.0f); + } + + if (wpd->shading.flag & XRAY_FLAG(wpd)) { + blend_threshold = 1.0f - XRAY_ALPHA(wpd) * 0.9f; + } + + if (wpd->shading.type == OB_WIRE) { + wpd->shading.xray_alpha = 0.0f; + wpd->shading.xray_alpha_wire = 0.0f; + } + + int state = DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_ALWAYS; + psl->checker_depth_pass = DRW_pass_create("Checker Depth", state); + grp = DRW_shgroup_create(e_data.checker_depth_sh, psl->checker_depth_pass); + DRW_shgroup_call_add(grp, DRW_cache_fullscreen_quad_get(), NULL); + DRW_shgroup_uniform_float_copy(grp, "threshold", blend_threshold); + DRW_shgroup_uniform_float_copy(grp, "offset", noise_offset); + } +} + +void workbench_forward_engine_free() +{ + for (int index = 0; index < MAX_SHADERS; index++) { + DRW_SHADER_FREE_SAFE(e_data.composite_sh_cache[index]); + DRW_SHADER_FREE_SAFE(e_data.transparent_accum_sh_cache[index]); + } + DRW_SHADER_FREE_SAFE(e_data.object_outline_sh); + DRW_SHADER_FREE_SAFE(e_data.object_outline_texture_sh); + DRW_SHADER_FREE_SAFE(e_data.object_outline_hair_sh); + DRW_SHADER_FREE_SAFE(e_data.checker_depth_sh); + + workbench_volume_engine_free(); + workbench_fxaa_engine_free(); + workbench_taa_engine_free(); +} + +void workbench_forward_cache_init(WORKBENCH_Data *UNUSED(vedata)) +{ +} + +static void workbench_forward_cache_populate_particles(WORKBENCH_Data *vedata, Object *ob) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_PrivateData *wpd = stl->g_data; + + for (ModifierData *md = ob->modifiers.first; md; md = md->next) { + if (md->type != eModifierType_ParticleSystem) { + continue; + } + ParticleSystem *psys = ((ParticleSystemModifierData *)md)->psys; + if (!psys_check_enabled(ob, psys, false)) { + continue; + } + if (!DRW_object_is_visible_psys_in_active_context(ob, psys)) { + continue; + } + ParticleSettings *part = psys->part; + const int draw_as = (part->draw_as == PART_DRAW_REND) ? part->ren_as : part->draw_as; + + if (draw_as == PART_DRAW_PATH) { + Image *image = NULL; + Material *mat = give_current_material(ob, part->omat); + ED_object_get_active_image(ob, part->omat, &image, NULL, NULL, NULL); + int color_type = workbench_material_determine_color_type(wpd, image, ob); + WORKBENCH_MaterialData *material = get_or_create_material_data(vedata, ob, mat, image, color_type); + + struct GPUShader *shader = (color_type != V3D_SHADING_TEXTURE_COLOR) + ? wpd->transparent_accum_hair_sh + : wpd->transparent_accum_texture_hair_sh; + DRWShadingGroup *shgrp = DRW_shgroup_hair_create( + ob, psys, md, + psl->transparent_accum_pass, + shader); + DRW_shgroup_uniform_block(shgrp, "world_block", wpd->world_ubo); + workbench_material_shgroup_uniform(wpd, shgrp, material, ob); + DRW_shgroup_uniform_vec4(shgrp, "viewvecs[0]", (float *)wpd->viewvecs, 3); + /* Hairs have lots of layer and can rapidly become the most prominent surface. + * So lower their alpha artificially. */ + float hair_alpha = XRAY_ALPHA(wpd) * 0.33f; + DRW_shgroup_uniform_float_copy(shgrp, "alpha", hair_alpha); + if (STUDIOLIGHT_TYPE_MATCAP_ENABLED(wpd)) { + BKE_studiolight_ensure_flag(wpd->studio_light, STUDIOLIGHT_EQUIRECT_RADIANCE_GPUTEXTURE); + DRW_shgroup_uniform_texture(shgrp, "matcapImage", wpd->studio_light->equirect_radiance_gputexture ); + } + if (SPECULAR_HIGHLIGHT_ENABLED(wpd) || MATCAP_ENABLED(wpd)) { + DRW_shgroup_uniform_vec2(shgrp, "invertedViewportSize", DRW_viewport_invert_size_get(), 1); + } + shgrp = DRW_shgroup_hair_create(ob, psys, md, + vedata->psl->object_outline_pass, + e_data.object_outline_hair_sh); + DRW_shgroup_uniform_int(shgrp, "object_id", &material->object_id, 1); + } + } +} + +void workbench_forward_cache_populate(WORKBENCH_Data *vedata, Object *ob) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PrivateData *wpd = stl->g_data; + const DRWContextState *draw_ctx = DRW_context_state_get(); + Scene *scene = draw_ctx->scene; + const bool is_wire = (ob->dt == OB_WIRE); + + if (!DRW_object_is_renderable(ob)) + return; + + if (ob->type == OB_MESH) { + workbench_forward_cache_populate_particles(vedata, ob); + } + + ModifierData *md; + if (((ob->base_flag & BASE_FROMDUPLI) == 0) && + (md = modifiers_findByType(ob, eModifierType_Smoke)) && + (modifier_isEnabled(scene, md, eModifierMode_Realtime)) && + (((SmokeModifierData *)md)->domain != NULL)) + { + workbench_volume_cache_populate(vedata, scene, ob, md); + return; /* Do not draw solid in this case. */ + } + + if (!DRW_object_is_visible_in_active_context(ob) || (ob->dt < OB_WIRE)) { + return; + } + + WORKBENCH_MaterialData *material; + if (ELEM(ob->type, OB_MESH, OB_CURVE, OB_SURF, OB_FONT, OB_MBALL)) { + const bool is_active = (ob == draw_ctx->obact); + const bool is_sculpt_mode = is_active && (draw_ctx->object_mode & OB_MODE_SCULPT) != 0; + const bool use_hide = is_active && DRW_object_use_hide_faces(ob); + bool is_drawn = false; + + if (!is_sculpt_mode && TEXTURE_DRAWING_ENABLED(wpd) && ELEM(ob->type, OB_MESH)) { + const Mesh *me = ob->data; + if (me->mloopuv) { + const int materials_len = MAX2(1, (is_sculpt_mode ? 1 : ob->totcol)); + struct GPUMaterial **gpumat_array = BLI_array_alloca(gpumat_array, materials_len); + struct GPUBatch **geom_array = me->totcol ? DRW_cache_mesh_surface_texpaint_get(ob, use_hide) : NULL; + if (materials_len > 0 && geom_array) { + for (int i = 0; i < materials_len; i++) { + if (geom_array[i] == NULL) { + continue; + } + + Material *mat = give_current_material(ob, i + 1); + Image *image; + ED_object_get_active_image(ob, i + 1, &image, NULL, NULL, NULL); + /* use OB_SOLID when no texture could be determined */ + + int color_type = wpd->shading.color_type; + if (color_type == V3D_SHADING_TEXTURE_COLOR) { + /* use OB_SOLID when no texture could be determined */ + if (image == NULL) { + color_type = V3D_SHADING_MATERIAL_COLOR; + } + } + + material = get_or_create_material_data(vedata, ob, mat, image, color_type); + DRW_shgroup_call_object_add(material->shgrp_object_outline, geom_array[i], ob); + DRW_shgroup_call_object_add(material->shgrp, geom_array[i], ob); + } + is_drawn = true; + } + } + } + + /* Fallback from not drawn OB_TEXTURE mode or just OB_SOLID mode */ + if (!is_drawn) { + if (ELEM(wpd->shading.color_type, V3D_SHADING_SINGLE_COLOR, V3D_SHADING_RANDOM_COLOR)) { + /* No material split needed */ + struct GPUBatch *geom = DRW_cache_object_surface_get_ex(ob, use_hide); + if (geom) { + material = get_or_create_material_data(vedata, ob, NULL, NULL, wpd->shading.color_type); + if (is_sculpt_mode) { + DRW_shgroup_call_sculpt_add(material->shgrp_object_outline, ob, ob->obmat); + if (!is_wire) { + DRW_shgroup_call_sculpt_add(material->shgrp, ob, ob->obmat); + } + } + else { + DRW_shgroup_call_object_add(material->shgrp_object_outline, geom, ob); + if (!is_wire) { + DRW_shgroup_call_object_add(material->shgrp, geom, ob); + } + } + } + } + else { + const int materials_len = MAX2(1, (is_sculpt_mode ? 1 : ob->totcol)); + struct GPUMaterial **gpumat_array = BLI_array_alloca(gpumat_array, materials_len); + for (int i = 0; i < materials_len; i++) { + gpumat_array[i] = NULL; + } + + struct GPUBatch **mat_geom = DRW_cache_object_surface_material_get( + ob, gpumat_array, materials_len, use_hide, NULL, NULL, NULL); + if (mat_geom) { + for (int i = 0; i < materials_len; ++i) { + if (mat_geom[i] == NULL) { + continue; + } + + Material *mat = give_current_material(ob, i + 1); + material = get_or_create_material_data(vedata, ob, mat, NULL, V3D_SHADING_MATERIAL_COLOR); + if (is_sculpt_mode) { + DRW_shgroup_call_sculpt_add(material->shgrp_object_outline, ob, ob->obmat); + if (!is_wire) { + DRW_shgroup_call_sculpt_add(material->shgrp, ob, ob->obmat); + } + } + else { + DRW_shgroup_call_object_add(material->shgrp_object_outline, mat_geom[i], ob); + if (!is_wire) { + DRW_shgroup_call_object_add(material->shgrp, mat_geom[i], ob); + } + } + } + } + } + } + } +} + +void workbench_forward_cache_finish(WORKBENCH_Data *UNUSED(vedata)) +{ +} + +void workbench_forward_draw_background(WORKBENCH_Data *UNUSED(vedata)) +{ + const float clear_depth = 1.0f; + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + DRW_stats_group_start("Clear depth"); + GPU_framebuffer_bind(dfbl->default_fb); + GPU_framebuffer_clear_depth(dfbl->default_fb, clear_depth); + DRW_stats_group_end(); +} + +void workbench_forward_draw_scene(WORKBENCH_Data *vedata) +{ + WORKBENCH_PassList *psl = vedata->psl; + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_FramebufferList *fbl = vedata->fbl; + WORKBENCH_PrivateData *wpd = stl->g_data; + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + + if (TAA_ENABLED(wpd)) { + workbench_taa_draw_scene_start(vedata); + } + + /* Write Depth + Object ID */ + const float clear_outline[4] = {0.0f}; + GPU_framebuffer_bind(fbl->object_outline_fb); + GPU_framebuffer_clear_color(fbl->object_outline_fb, clear_outline); + DRW_draw_pass(psl->object_outline_pass); + + if (XRAY_ALPHA(wpd) > 0.0) { + const float clear_color[4] = {0.0f, 0.0f, 0.0f, 1.0f}; + GPU_framebuffer_bind(fbl->transparent_accum_fb); + GPU_framebuffer_clear_color(fbl->transparent_accum_fb, clear_color); + DRW_draw_pass(psl->transparent_accum_pass); + } + else { + /* TODO(fclem): this is unnecessary and takes up perf. + * Better change the composite frag shader to not use the tx. */ + const float clear_color[4] = {0.0f, 0.0f, 0.0f, 1.0f}; + GPU_framebuffer_bind(fbl->transparent_accum_fb); + GPU_framebuffer_clear_color(fbl->transparent_accum_fb, clear_color); + } + + /* Composite */ + GPU_framebuffer_bind(fbl->composite_fb); + DRW_draw_pass(psl->composite_pass); + DRW_draw_pass(psl->volume_pass); + + /* Color correct and Anti aliasing */ + workbench_aa_draw_pass(vedata, e_data.composite_buffer_tx); + + /* Apply checker pattern */ + GPU_framebuffer_bind(dfbl->depth_only_fb); + DRW_draw_pass(psl->checker_depth_pass); +} + +void workbench_forward_draw_finish(WORKBENCH_Data *vedata) +{ + WORKBENCH_StorageList *stl = vedata->stl; + WORKBENCH_PrivateData *wpd = stl->g_data; + + workbench_private_data_free(wpd); + workbench_volume_smoke_textures_free(wpd); +} diff --git a/source/blender/draw/engines/workbench/workbench_materials.c b/source/blender/draw/engines/workbench/workbench_materials.c new file mode 100644 index 00000000000..19fb8efb812 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_materials.c @@ -0,0 +1,177 @@ + + +#include "workbench_private.h" + +#include "BIF_gl.h" + +#include "BLI_dynstr.h" +#include "BLI_hash.h" + +#define HSV_SATURATION 0.5 +#define HSV_VALUE 0.8 + +void workbench_material_update_data(WORKBENCH_PrivateData *wpd, Object *ob, Material *mat, WORKBENCH_MaterialData *data) +{ + /* When V3D_SHADING_TEXTURE_COLOR is active, use V3D_SHADING_MATERIAL_COLOR as fallback when no texture could be determined */ + int color_type = wpd->shading.color_type == V3D_SHADING_TEXTURE_COLOR ? V3D_SHADING_MATERIAL_COLOR : wpd->shading.color_type; + copy_v4_fl4(data->diffuse_color, 0.8f, 0.8f, 0.8f, 1.0f); + copy_v4_fl4(data->specular_color, 0.05f, 0.05f, 0.05f, 1.0f); /* Dielectric: 5% reflective. */ + data->roughness = 0.5; /* sqrtf(0.25f); */ + + if (color_type == V3D_SHADING_SINGLE_COLOR) { + copy_v3_v3(data->diffuse_color, wpd->shading.single_color); + } + else if (color_type == V3D_SHADING_RANDOM_COLOR) { + uint hash = BLI_ghashutil_strhash_p_murmur(ob->id.name); + if (ob->id.lib) { + hash = (hash * 13) ^ BLI_ghashutil_strhash_p_murmur(ob->id.lib->name); + } + + float hue = BLI_hash_int_01(hash); + float hsv[3] = {hue, HSV_SATURATION, HSV_VALUE}; + hsv_to_rgb_v(hsv, data->diffuse_color); + } + else { + /* V3D_SHADING_MATERIAL_COLOR */ + if (mat) { + if (SPECULAR_HIGHLIGHT_ENABLED(wpd)) { + mul_v3_v3fl(data->diffuse_color, &mat->r, 1.0f - mat->metallic); + mul_v3_v3fl(data->specular_color, &mat->r, mat->metallic); + add_v3_fl(data->specular_color, 0.05f * (1.0f - mat->metallic)); + data->roughness = sqrtf(mat->roughness); /* Remap to disney roughness. */ + } + else { + copy_v3_v3(data->diffuse_color, &mat->r); + } + } + } +} + +char *workbench_material_build_defines(WORKBENCH_PrivateData *wpd, bool use_textures, bool is_hair) +{ + char *str = NULL; + + DynStr *ds = BLI_dynstr_new(); + + if (wpd->shading.flag & V3D_SHADING_OBJECT_OUTLINE) { + BLI_dynstr_appendf(ds, "#define V3D_SHADING_OBJECT_OUTLINE\n"); + } + if (wpd->shading.flag & V3D_SHADING_SHADOW) { + BLI_dynstr_appendf(ds, "#define V3D_SHADING_SHADOW\n"); + } + if (SSAO_ENABLED(wpd) || CURVATURE_ENABLED(wpd)) { + BLI_dynstr_appendf(ds, "#define WB_CAVITY\n"); + } + if (SPECULAR_HIGHLIGHT_ENABLED(wpd)) { + BLI_dynstr_appendf(ds, "#define V3D_SHADING_SPECULAR_HIGHLIGHT\n"); + } + if (STUDIOLIGHT_ENABLED(wpd)) { + BLI_dynstr_appendf(ds, "#define V3D_LIGHTING_STUDIO\n"); + } + if (FLAT_ENABLED(wpd)) { + BLI_dynstr_appendf(ds, "#define V3D_LIGHTING_FLAT\n"); + } + if (MATCAP_ENABLED(wpd)) { + BLI_dynstr_appendf(ds, "#define V3D_LIGHTING_MATCAP\n"); + } + if (NORMAL_VIEWPORT_PASS_ENABLED(wpd)) { + BLI_dynstr_appendf(ds, "#define NORMAL_VIEWPORT_PASS_ENABLED\n"); + } + if (use_textures) { + BLI_dynstr_appendf(ds, "#define V3D_SHADING_TEXTURE_COLOR\n"); + } + if (NORMAL_ENCODING_ENABLED()) { + BLI_dynstr_appendf(ds, "#define WORKBENCH_ENCODE_NORMALS\n"); + } + if (is_hair) { + BLI_dynstr_appendf(ds, "#define HAIR_SHADER\n"); + } + + BLI_dynstr_appendf(ds, "#define STUDIOLIGHT_SH_BANDS %d\n", STUDIOLIGHT_SH_BANDS); + BLI_dynstr_appendf(ds, "#define STUDIOLIGHT_SH_MAX_COMPONENTS %d\n", WORKBENCH_SH_DATA_LEN); + + str = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + return str; +} + +uint workbench_material_get_hash(WORKBENCH_MaterialData *material_template, bool is_ghost) +{ + uint input[4]; + uint result; + float *color = material_template->diffuse_color; + input[0] = (uint)(color[0] * 512); + input[1] = (uint)(color[1] * 512); + input[2] = (uint)(color[2] * 512); + input[3] = material_template->object_id; + result = BLI_ghashutil_uinthash_v4_murmur(input); + + color = material_template->specular_color; + input[0] = (uint)(color[0] * 512); + input[1] = (uint)(color[1] * 512); + input[2] = (uint)(color[2] * 512); + input[3] = (uint)(material_template->roughness * 512); + result += BLI_ghashutil_uinthash_v4_murmur(input); + + result += BLI_ghashutil_uinthash((uint)is_ghost); + + /* add texture reference */ + if (material_template->ima) { + result += BLI_ghashutil_inthash_p_murmur(material_template->ima); + } + + return result; +} + +int workbench_material_get_shader_index(WORKBENCH_PrivateData *wpd, bool use_textures, bool is_hair) +{ + /* NOTE: change MAX_SHADERS accordingly when modifying this function. */ + int index = 0; + /* 1 bit V3D_SHADING_TEXTURE_COLOR */ + SET_FLAG_FROM_TEST(index, use_textures, 1 << 0); + /* 2 bits FLAT/STUDIO/MATCAP + Specular highlight */ + int ligh_flag = SPECULAR_HIGHLIGHT_ENABLED(wpd) ? 3 : wpd->shading.light; + SET_FLAG_FROM_TEST(index, wpd->shading.light, ligh_flag << 1); + /* 3 bits for flags */ + SET_FLAG_FROM_TEST(index, wpd->shading.flag & V3D_SHADING_SHADOW, 1 << 3); + SET_FLAG_FROM_TEST(index, wpd->shading.flag & V3D_SHADING_CAVITY, 1 << 4); + SET_FLAG_FROM_TEST(index, wpd->shading.flag & V3D_SHADING_OBJECT_OUTLINE, 1 << 5); + /* 1 bit for hair */ + SET_FLAG_FROM_TEST(index, is_hair, 1 << 6); + return index; +} + +int workbench_material_determine_color_type(WORKBENCH_PrivateData *wpd, Image *ima, Object *ob) +{ + int color_type = wpd->shading.color_type; + if ((color_type == V3D_SHADING_TEXTURE_COLOR && ima == NULL) || (ob->dt < OB_TEXTURE)) { + color_type = V3D_SHADING_MATERIAL_COLOR; + } + return color_type; +} + +void workbench_material_shgroup_uniform( + WORKBENCH_PrivateData *wpd, DRWShadingGroup *grp, WORKBENCH_MaterialData *material, Object *ob) +{ + if (workbench_material_determine_color_type(wpd, material->ima, ob) == V3D_SHADING_TEXTURE_COLOR) { + GPUTexture *tex = GPU_texture_from_blender(material->ima, NULL, GL_TEXTURE_2D, false, 0.0f); + DRW_shgroup_uniform_texture(grp, "image", tex); + } + else { + DRW_shgroup_uniform_vec4(grp, "materialDiffuseColor", material->diffuse_color, 1); + } + + if (SPECULAR_HIGHLIGHT_ENABLED(wpd)) { + DRW_shgroup_uniform_vec4(grp, "materialSpecularColor", material->specular_color, 1); + DRW_shgroup_uniform_float(grp, "materialRoughness", &material->roughness, 1); + } +} + +void workbench_material_copy(WORKBENCH_MaterialData *dest_material, const WORKBENCH_MaterialData *source_material) +{ + dest_material->object_id = source_material->object_id; + copy_v4_v4(dest_material->diffuse_color, source_material->diffuse_color); + copy_v4_v4(dest_material->specular_color, source_material->specular_color); + dest_material->roughness = source_material->roughness; + dest_material->ima = source_material->ima; +} diff --git a/source/blender/draw/engines/workbench/workbench_private.h b/source/blender/draw/engines/workbench/workbench_private.h new file mode 100644 index 00000000000..0e27ed2ed53 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_private.h @@ -0,0 +1,327 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_private.h + * \ingroup draw_engine + */ + +#ifndef __WORKBENCH_PRIVATE_H__ +#define __WORKBENCH_PRIVATE_H__ + + +#include "BKE_studiolight.h" + +#include "DNA_image_types.h" +#include "DNA_view3d_types.h" +#include "DNA_world_types.h" +#include "DNA_userdef_types.h" + +#include "DRW_render.h" + +#include "workbench_engine.h" + +#define WORKBENCH_ENGINE "BLENDER_WORKBENCH" +#define M_GOLDEN_RATION_CONJUGATE 0.618033988749895 +#define MAX_SHADERS (1 << 7) +#define MAX_CAVITY_SHADERS (1 << 3) + +#define TEXTURE_DRAWING_ENABLED(wpd) (wpd->shading.color_type & V3D_SHADING_TEXTURE_COLOR) +#define FLAT_ENABLED(wpd) (wpd->shading.light == V3D_LIGHTING_FLAT) +#define STUDIOLIGHT_ENABLED(wpd) (wpd->shading.light == V3D_LIGHTING_STUDIO) +#define MATCAP_ENABLED(wpd) (wpd->shading.light == V3D_LIGHTING_MATCAP) +#define USE_WORLD_ORIENTATION(wpd) ((wpd->shading.flag & V3D_SHADING_WORLD_ORIENTATION) != 0) +#define STUDIOLIGHT_TYPE_WORLD_ENABLED(wpd) (STUDIOLIGHT_ENABLED(wpd) && (wpd->studio_light->flag & STUDIOLIGHT_TYPE_WORLD)) +#define STUDIOLIGHT_TYPE_STUDIO_ENABLED(wpd) (STUDIOLIGHT_ENABLED(wpd) && (wpd->studio_light->flag & STUDIOLIGHT_TYPE_STUDIO)) +#define STUDIOLIGHT_TYPE_MATCAP_ENABLED(wpd) (MATCAP_ENABLED(wpd) && (wpd->studio_light->flag & STUDIOLIGHT_TYPE_MATCAP)) +#define SSAO_ENABLED(wpd) ((wpd->shading.flag & V3D_SHADING_CAVITY) && ((wpd->shading.cavity_type == V3D_SHADING_CAVITY_SSAO) || (wpd->shading.cavity_type == V3D_SHADING_CAVITY_BOTH))) +#define CURVATURE_ENABLED(wpd) ((wpd->shading.flag & V3D_SHADING_CAVITY) && ((wpd->shading.cavity_type == V3D_SHADING_CAVITY_CURVATURE) || (wpd->shading.cavity_type == V3D_SHADING_CAVITY_BOTH))) +#define SHADOW_ENABLED(wpd) (wpd->shading.flag & V3D_SHADING_SHADOW) +#define GHOST_ENABLED(psl) (!DRW_pass_is_empty(psl->ghost_prepass_pass) || !DRW_pass_is_empty(psl->ghost_prepass_hair_pass)) + +#define IS_NAVIGATING(wpd) ((DRW_context_state_get()->rv3d) && (DRW_context_state_get()->rv3d->rflag & RV3D_NAVIGATING)) +#define FXAA_ENABLED(wpd) ((!DRW_state_is_opengl_render()) && \ + (IN_RANGE(wpd->user_preferences->gpu_viewport_quality, GPU_VIEWPORT_QUALITY_FXAA, GPU_VIEWPORT_QUALITY_TAA8) || \ + ((IS_NAVIGATING(wpd) || wpd->is_playback) && (wpd->user_preferences->gpu_viewport_quality >= GPU_VIEWPORT_QUALITY_TAA8)))) +#define TAA_ENABLED(wpd) (DRW_state_is_image_render() || (wpd->user_preferences->gpu_viewport_quality >= GPU_VIEWPORT_QUALITY_TAA8 && !IS_NAVIGATING(wpd) && !wpd->is_playback)) +#define SPECULAR_HIGHLIGHT_ENABLED(wpd) (STUDIOLIGHT_ENABLED(wpd) && (wpd->shading.flag & V3D_SHADING_SPECULAR_HIGHLIGHT) && (!STUDIOLIGHT_TYPE_MATCAP_ENABLED(wpd))) +#define OBJECT_OUTLINE_ENABLED(wpd) (wpd->shading.flag & V3D_SHADING_OBJECT_OUTLINE) +#define OBJECT_ID_PASS_ENABLED(wpd) (OBJECT_OUTLINE_ENABLED(wpd) || CURVATURE_ENABLED(wpd)) +#define NORMAL_VIEWPORT_COMP_PASS_ENABLED(wpd) (MATCAP_ENABLED(wpd) || STUDIOLIGHT_ENABLED(wpd) || SHADOW_ENABLED(wpd)) +#define NORMAL_VIEWPORT_PASS_ENABLED(wpd) (NORMAL_VIEWPORT_COMP_PASS_ENABLED(wpd) || SSAO_ENABLED(wpd) || CURVATURE_ENABLED(wpd)) +#define NORMAL_ENCODING_ENABLED() (true) + + +struct RenderEngine; +struct RenderLayer; +struct rcti; + + +typedef struct WORKBENCH_FramebufferList { + /* Deferred render buffers */ + struct GPUFrameBuffer *prepass_fb; + struct GPUFrameBuffer *ghost_prepass_fb; + struct GPUFrameBuffer *cavity_fb; + struct GPUFrameBuffer *composite_fb; + + struct GPUFrameBuffer *effect_fb; + struct GPUFrameBuffer *effect_taa_fb; + struct GPUFrameBuffer *depth_buffer_fb; + struct GPUFrameBuffer *volume_fb; + + /* Forward render buffers */ + struct GPUFrameBuffer *object_outline_fb; + struct GPUFrameBuffer *transparent_accum_fb; + struct GPUFrameBuffer *transparent_revealage_fb; +} WORKBENCH_FramebufferList; + +typedef struct WORKBENCH_TextureList { + struct GPUTexture *history_buffer_tx; + struct GPUTexture *depth_buffer_tx; +} WORKBENCH_TextureList; + +typedef struct WORKBENCH_StorageList { + struct WORKBENCH_PrivateData *g_data; + struct WORKBENCH_EffectInfo *effects; +} WORKBENCH_StorageList; + +typedef struct WORKBENCH_PassList { + /* deferred rendering */ + struct DRWPass *prepass_pass; + struct DRWPass *prepass_hair_pass; + struct DRWPass *ghost_prepass_pass; + struct DRWPass *ghost_prepass_hair_pass; + struct DRWPass *cavity_pass; + struct DRWPass *shadow_depth_pass_pass; + struct DRWPass *shadow_depth_pass_mani_pass; + struct DRWPass *shadow_depth_fail_pass; + struct DRWPass *shadow_depth_fail_mani_pass; + struct DRWPass *shadow_depth_fail_caps_pass; + struct DRWPass *shadow_depth_fail_caps_mani_pass; + struct DRWPass *composite_pass; + struct DRWPass *composite_shadow_pass; + struct DRWPass *ghost_resolve_pass; + struct DRWPass *effect_aa_pass; + struct DRWPass *volume_pass; + + /* forward rendering */ + struct DRWPass *transparent_accum_pass; + struct DRWPass *object_outline_pass; + struct DRWPass *depth_pass; + struct DRWPass *checker_depth_pass; +} WORKBENCH_PassList; + +typedef struct WORKBENCH_Data { + void *engine_type; + WORKBENCH_FramebufferList *fbl; + WORKBENCH_TextureList *txl; + WORKBENCH_PassList *psl; + WORKBENCH_StorageList *stl; +} WORKBENCH_Data; + +typedef struct WORKBENCH_UBO_Light { + float light_direction[4]; + float specular_color[3], pad; + float diffuse_color[3], wrapped; +} WORKBENCH_UBO_Light; + +#define WORKBENCH_SH_DATA_LEN ((STUDIOLIGHT_SH_BANDS == 2) ? 6 : STUDIOLIGHT_SH_EFFECTIVE_COEFS_LEN) + +typedef struct WORKBENCH_UBO_World { + float spherical_harmonics_coefs[WORKBENCH_SH_DATA_LEN][4]; + float background_color_low[4]; + float background_color_high[4]; + float object_outline_color[4]; + float shadow_direction_vs[4]; + WORKBENCH_UBO_Light lights[4]; + float ambient_color[4]; + int num_lights; + int matcap_orientation; + float background_alpha; + float curvature_ridge; + float curvature_valley; + int pad[3]; +} WORKBENCH_UBO_World; +BLI_STATIC_ASSERT_ALIGN(WORKBENCH_UBO_World, 16) + + +typedef struct WORKBENCH_PrivateData { + struct GHash *material_hash; + struct GPUShader *prepass_solid_sh; + struct GPUShader *prepass_solid_hair_sh; + struct GPUShader *prepass_texture_sh; + struct GPUShader *prepass_texture_hair_sh; + struct GPUShader *composite_sh; + struct GPUShader *transparent_accum_sh; + struct GPUShader *transparent_accum_hair_sh; + struct GPUShader *transparent_accum_texture_sh; + struct GPUShader *transparent_accum_texture_hair_sh; + View3DShading shading; + StudioLight *studio_light; + UserDef *user_preferences; + struct GPUUniformBuffer *world_ubo; + struct DRWShadingGroup *shadow_shgrp; + struct DRWShadingGroup *depth_shgrp; + WORKBENCH_UBO_World world_data; + float shadow_multiplier; + float cached_shadow_direction[3]; + float shadow_mat[4][4]; + float shadow_inv[4][4]; + float shadow_far_plane[4]; /* Far plane of the view frustum. */ + float shadow_near_corners[4][3]; /* Near plane corners in shadow space. */ + float shadow_near_min[3]; /* min and max of shadow_near_corners. allow fast test */ + float shadow_near_max[3]; + float shadow_near_sides[2][4]; /* This is a parallelogram, so only 2 normal and distance to the edges. */ + bool shadow_changed; + bool is_playback; + + /* Volumes */ + bool volumes_do; + ListBase smoke_domains; + + /* Ssao */ + float winmat[4][4]; + float viewvecs[3][4]; + float ssao_params[4]; + float ssao_settings[4]; + + /* Color Management */ + bool use_color_view_settings; +} WORKBENCH_PrivateData; /* Transient data */ + +typedef struct WORKBENCH_EffectInfo { + float override_persmat[4][4]; + float override_persinv[4][4]; + float override_winmat[4][4]; + float override_wininv[4][4]; + float last_mat[4][4]; + float curr_mat[4][4]; + int jitter_index; + float taa_mix_factor; + bool view_updated; +} WORKBENCH_EffectInfo; + +typedef struct WORKBENCH_MaterialData { + float diffuse_color[4]; + float specular_color[4]; + float roughness; + int object_id; + int color_type; + Image *ima; + + /* Linked shgroup for drawing */ + DRWShadingGroup *shgrp; + /* forward rendering */ + DRWShadingGroup *shgrp_object_outline; +} WORKBENCH_MaterialData; + +typedef struct WORKBENCH_ObjectData { + DrawData dd; + + /* Shadow direction in local object space. */ + float shadow_dir[3], shadow_depth; + float shadow_min[3], shadow_max[3]; /* Min, max in shadow space */ + BoundBox shadow_bbox; + bool shadow_bbox_dirty; + + int object_id; +} WORKBENCH_ObjectData; + +/* workbench_engine.c */ +void workbench_solid_materials_init(WORKBENCH_Data *vedata); +void workbench_solid_materials_cache_init(WORKBENCH_Data *vedata); +void workbench_solid_materials_cache_populate(WORKBENCH_Data *vedata, Object *ob); +void workbench_solid_materials_cache_finish(WORKBENCH_Data *vedata); +void workbench_solid_materials_draw_scene(WORKBENCH_Data *vedata); +void workbench_solid_materials_free(void); + +/* workbench_deferred.c */ +void workbench_deferred_engine_init(WORKBENCH_Data *vedata); +void workbench_deferred_engine_free(void); +void workbench_deferred_draw_background(WORKBENCH_Data *vedata); +void workbench_deferred_draw_scene(WORKBENCH_Data *vedata); +void workbench_deferred_draw_finish(WORKBENCH_Data *vedata); +void workbench_deferred_cache_init(WORKBENCH_Data *vedata); +void workbench_deferred_solid_cache_populate(WORKBENCH_Data *vedata, Object *ob); +void workbench_deferred_cache_finish(WORKBENCH_Data *vedata); + +/* workbench_forward.c */ +void workbench_forward_engine_init(WORKBENCH_Data *vedata); +void workbench_forward_engine_free(void); +void workbench_forward_draw_background(WORKBENCH_Data *vedata); +void workbench_forward_draw_scene(WORKBENCH_Data *vedata); +void workbench_forward_draw_finish(WORKBENCH_Data *vedata); +void workbench_forward_cache_init(WORKBENCH_Data *vedata); +void workbench_forward_cache_populate(WORKBENCH_Data *vedata, Object *ob); +void workbench_forward_cache_finish(WORKBENCH_Data *vedata); + +/* workbench_effect_aa.c */ +void workbench_aa_create_pass(WORKBENCH_Data *vedata, GPUTexture **tx); +void workbench_aa_draw_pass(WORKBENCH_Data *vedata, GPUTexture *tx); + +/* workbench_effect_fxaa.c */ +void workbench_fxaa_engine_init(void); +void workbench_fxaa_engine_free(void); +DRWPass *workbench_fxaa_create_pass(GPUTexture **color_buffer_tx); + +/* workbench_effect_taa.c */ +void workbench_taa_engine_init(WORKBENCH_Data *vedata); +void workbench_taa_engine_free(void); +DRWPass *workbench_taa_create_pass(WORKBENCH_Data *vedata, GPUTexture **color_buffer_tx); +void workbench_taa_draw_scene_start(WORKBENCH_Data *vedata); +void workbench_taa_draw_scene_end(WORKBENCH_Data *vedata); +void workbench_taa_view_updated(WORKBENCH_Data *vedata); +int workbench_taa_calculate_num_iterations(WORKBENCH_Data *vedata); + +/* workbench_materials.c */ +int workbench_material_determine_color_type(WORKBENCH_PrivateData *wpd, Image *ima, Object *ob); +char *workbench_material_build_defines(WORKBENCH_PrivateData *wpd, bool use_textures, bool is_hair); +void workbench_material_update_data(WORKBENCH_PrivateData *wpd, Object *ob, Material *mat, WORKBENCH_MaterialData *data); +uint workbench_material_get_hash(WORKBENCH_MaterialData *material_template, bool is_ghost); +int workbench_material_get_shader_index(WORKBENCH_PrivateData *wpd, bool use_textures, bool is_hair); +void workbench_material_shgroup_uniform( + WORKBENCH_PrivateData *wpd, DRWShadingGroup *grp, WORKBENCH_MaterialData *material, Object *ob); +void workbench_material_copy(WORKBENCH_MaterialData *dest_material, const WORKBENCH_MaterialData *source_material); + +/* workbench_studiolight.c */ +void studiolight_update_world(WORKBENCH_PrivateData *wpd, StudioLight *sl, WORKBENCH_UBO_World *wd); +void studiolight_update_light(WORKBENCH_PrivateData *wpd, const float light_direction[3]); +bool studiolight_object_cast_visible_shadow(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed); +float studiolight_object_shadow_distance(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed); +bool studiolight_camera_in_object_shadow(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed); + +/* workbench_data.c */ +void workbench_effect_info_init(WORKBENCH_EffectInfo *effect_info); +void workbench_private_data_init(WORKBENCH_PrivateData *wpd); +void workbench_private_data_free(WORKBENCH_PrivateData *wpd); +void workbench_private_data_get_light_direction(WORKBENCH_PrivateData *wpd, float r_light_direction[3]); + +/* workbench_volume.c */ +void workbench_volume_engine_init(void); +void workbench_volume_engine_free(void); +void workbench_volume_cache_init(WORKBENCH_Data *vedata); +void workbench_volume_cache_populate(WORKBENCH_Data *vedata, Scene *scene, Object *ob, struct ModifierData *md); +void workbench_volume_smoke_textures_free(WORKBENCH_PrivateData *wpd); + +/* workbench_render.c */ +void workbench_render(WORKBENCH_Data *vedata, struct RenderEngine *engine, struct RenderLayer *render_layer, const struct rcti *rect); +void workbench_render_update_passes(struct RenderEngine *engine, struct Scene *scene, struct ViewLayer *view_layer); + +#endif diff --git a/source/blender/draw/engines/workbench/workbench_render.c b/source/blender/draw/engines/workbench/workbench_render.c new file mode 100644 index 00000000000..e8d525585f4 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_render.c @@ -0,0 +1,208 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_render.c + * \ingroup draw_engine + * + * Render functions for final render output. + */ + +#include "BLI_rect.h" + +#include "BKE_report.h" + +#include "DRW_render.h" + +#include "GPU_shader.h" + +#include "DEG_depsgraph.h" +#include "DEG_depsgraph_query.h" + +#include "RE_pipeline.h" + +#include "workbench_private.h" + +static void workbench_render_deferred_cache( + void *vedata, struct Object *ob, + struct RenderEngine *UNUSED(engine), struct Depsgraph *UNUSED(depsgraph)) +{ + workbench_deferred_solid_cache_populate(vedata, ob); +} + +static void workbench_render_forward_cache( + void *vedata, struct Object *ob, + struct RenderEngine *UNUSED(engine), struct Depsgraph *UNUSED(depsgraph)) +{ + workbench_forward_cache_populate(vedata, ob); +} + +static void workbench_render_matrices_init(RenderEngine *engine, Depsgraph *depsgraph) +{ + /* TODO(sergey): Shall render hold pointer to an evaluated camera instead? */ + Scene *scene = DEG_get_evaluated_scene(depsgraph); + struct Object *ob_camera_eval = DEG_get_evaluated_object(depsgraph, RE_GetCamera(engine->re)); + float frame = BKE_scene_frame_get(scene); + + /* Set the persective, view and window matrix. */ + float winmat[4][4], wininv[4][4]; + float viewmat[4][4], viewinv[4][4]; + float persmat[4][4], persinv[4][4]; + + RE_GetCameraWindow(engine->re, ob_camera_eval, frame, winmat); + RE_GetCameraModelMatrix(engine->re, ob_camera_eval, viewinv); + + invert_m4_m4(viewmat, viewinv); + mul_m4_m4m4(persmat, winmat, viewmat); + invert_m4_m4(persinv, persmat); + invert_m4_m4(wininv, winmat); + + DRW_viewport_matrix_override_set(persmat, DRW_MAT_PERS); + DRW_viewport_matrix_override_set(persinv, DRW_MAT_PERSINV); + DRW_viewport_matrix_override_set(winmat, DRW_MAT_WIN); + DRW_viewport_matrix_override_set(wininv, DRW_MAT_WININV); + DRW_viewport_matrix_override_set(viewmat, DRW_MAT_VIEW); + DRW_viewport_matrix_override_set(viewinv, DRW_MAT_VIEWINV); +} + +static bool workbench_render_framebuffers_init(void) +{ + /* For image render, allocate own buffers because we don't have a viewport. */ + const float *viewport_size = DRW_viewport_size_get(); + const int size[2] = {(int)viewport_size[0], (int)viewport_size[1]}; + + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + dtxl->color = GPU_texture_create_2D(size[0], size[1], GPU_RGBA8, NULL, NULL); + dtxl->depth = GPU_texture_create_2D(size[0], size[1], GPU_DEPTH24_STENCIL8, NULL, NULL); + + if (!(dtxl->depth && dtxl->color)) { + return false; + } + + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + + GPU_framebuffer_ensure_config(&dfbl->default_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_TEXTURE(dtxl->color) + }); + + GPU_framebuffer_ensure_config(&dfbl->depth_only_fb, { + GPU_ATTACHMENT_TEXTURE(dtxl->depth), + GPU_ATTACHMENT_NONE + }); + + GPU_framebuffer_ensure_config(&dfbl->color_only_fb, { + GPU_ATTACHMENT_NONE, + GPU_ATTACHMENT_TEXTURE(dtxl->color) + }); + + bool ok = true; + ok = ok && GPU_framebuffer_check_valid(dfbl->default_fb, NULL); + ok = ok && GPU_framebuffer_check_valid(dfbl->color_only_fb, NULL); + ok = ok && GPU_framebuffer_check_valid(dfbl->depth_only_fb, NULL); + + return ok; +} + +static void workbench_render_framebuffers_finish(void) +{ +} + +void workbench_render(WORKBENCH_Data *data, RenderEngine *engine, RenderLayer *render_layer, const rcti *rect) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + const Scene *scene = draw_ctx->scene; + Depsgraph *depsgraph = draw_ctx->depsgraph; + workbench_render_matrices_init(engine, depsgraph); + + if (!workbench_render_framebuffers_init()) { + RE_engine_report(engine, RPT_ERROR, "Failed to allocate OpenGL buffers"); + return; + } + + const bool deferred = (scene->display.shading.flag & XRAY_FLAG(&scene->display)) == 0; + + if (deferred) { + /* Init engine. */ + workbench_deferred_engine_init(data); + + /* Init objects. */ + workbench_deferred_cache_init(data); + DRW_render_object_iter(data, engine, depsgraph, workbench_render_deferred_cache); + workbench_deferred_cache_finish(data); + DRW_render_instance_buffer_finish(); + + /* Draw. */ + int num_samples = workbench_taa_calculate_num_iterations(data); + for (int sample = 0; sample < num_samples; sample++) { + if (RE_engine_test_break(engine)) { + break; + } + /* TODO: Save matrices instead of recomputing them for each samples. */ + workbench_render_matrices_init(engine, depsgraph); + + workbench_deferred_draw_background(data); + workbench_deferred_draw_scene(data); + } + + workbench_deferred_draw_finish(data); + } + else { + /* Init engine. */ + workbench_forward_engine_init(data); + + /* Init objects. */ + workbench_forward_cache_init(data); + DRW_render_object_iter(data, engine, depsgraph, workbench_render_forward_cache); + workbench_forward_cache_finish(data); + DRW_render_instance_buffer_finish(); + + /* Draw. */ + int num_samples = workbench_taa_calculate_num_iterations(data); + for (int sample = 0; sample < num_samples; sample++) { + if (RE_engine_test_break(engine)) { + break; + } + + workbench_forward_draw_background(data); + workbench_forward_draw_scene(data); + } + + workbench_forward_draw_finish(data); + } + + /* Write render output. */ + const char *viewname = RE_GetActiveRenderView(engine->re); + RenderPass *rp = RE_pass_find_by_name(render_layer, RE_PASSNAME_COMBINED, viewname); + + DefaultFramebufferList *dfbl = DRW_viewport_framebuffer_list_get(); + GPU_framebuffer_bind(dfbl->color_only_fb); + GPU_framebuffer_read_color(dfbl->color_only_fb, + rect->xmin, rect->ymin, + BLI_rcti_size_x(rect), BLI_rcti_size_y(rect), + 4, 0, rp->rect); + + workbench_render_framebuffers_finish(); +} + +void workbench_render_update_passes(RenderEngine *engine, Scene *scene, ViewLayer *view_layer) +{ + RE_engine_register_pass(engine, scene, view_layer, RE_PASSNAME_COMBINED, 4, "RGBA", SOCK_RGBA); +} diff --git a/source/blender/draw/engines/workbench/workbench_studiolight.c b/source/blender/draw/engines/workbench/workbench_studiolight.c new file mode 100644 index 00000000000..7b348cfd8ec --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_studiolight.c @@ -0,0 +1,304 @@ +/* + * Copyright 2016, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_studiolight.c + * \ingroup draw_engine + */ +#include "BKE_studiolight.h" + +#include "DRW_engine.h" +#include "workbench_private.h" + +#include "BKE_object.h" + +#include "BLI_math.h" +#include "BKE_global.h" + +void studiolight_update_world(WORKBENCH_PrivateData *wpd, StudioLight *studiolight, WORKBENCH_UBO_World *wd) +{ + float view_matrix[4][4], rot_matrix[4][4]; + DRW_viewport_matrix_get(view_matrix, DRW_MAT_VIEW); + + if (USE_WORLD_ORIENTATION(wpd)) { + axis_angle_to_mat4_single(rot_matrix, 'Z', -wpd->shading.studiolight_rot_z); + mul_m4_m4m4(rot_matrix, view_matrix, rot_matrix); + swap_v3_v3(rot_matrix[2], rot_matrix[1]); + negate_v3(rot_matrix[2]); + } + else { + unit_m4(rot_matrix); + } + + if (U.edit_solid_light) { + studiolight = BKE_studiolight_studio_edit_get(); + } + + /* Studio Lights. */ + for (int i = 0; i < 4; i++) { + WORKBENCH_UBO_Light *light = &wd->lights[i]; + /* TODO use 4 lights in studiolights prefs. */ + if (i > 2) { + copy_v3_fl3(light->light_direction, 1.0f, 0.0f, 0.0f); + copy_v3_fl(light->specular_color, 0.0f); + copy_v3_fl(light->diffuse_color, 0.0f); + continue; + } + + SolidLight *sl = &studiolight->light[i]; + if (sl->flag) { + copy_v3_v3(light->light_direction, sl->vec); + mul_mat3_m4_v3(rot_matrix, light->light_direction); + /* We should predivide the power by PI but that makes the lights really dim. */ + copy_v3_v3(light->specular_color, sl->spec); + copy_v3_v3(light->diffuse_color, sl->col); + light->wrapped = sl->smooth; + } + else { + copy_v3_fl3(light->light_direction, 1.0f, 0.0f, 0.0f); + copy_v3_fl(light->specular_color, 0.0f); + copy_v3_fl(light->diffuse_color, 0.0f); + } + } + + copy_v3_v3(wd->ambient_color, studiolight->light_ambient); + +#if 0 + BKE_studiolight_ensure_flag(sl, STUDIOLIGHT_SPHERICAL_HARMONICS_COEFFICIENTS_CALCULATED); + +#if STUDIOLIGHT_SH_BANDS == 2 + /* Use Geomerics non-linear SH. */ + mul_v3_v3fl(wd->spherical_harmonics_coefs[0], sl->spherical_harmonics_coefs[0], M_1_PI); + /* Swizzle to make shader code simpler. */ + for (int i = 0; i < 3; ++i) { + copy_v3_fl3( + wd->spherical_harmonics_coefs[i + 1], + -sl->spherical_harmonics_coefs[3][i], + sl->spherical_harmonics_coefs[2][i], + -sl->spherical_harmonics_coefs[1][i]); + mul_v3_fl(wd->spherical_harmonics_coefs[i + 1], M_1_PI * 1.5f); /* 1.5f is to improve the contrast a bit. */ + } + + /* Precompute as much as we can. See shader code for derivation. */ + float len_r1[3], lr1_r0[3], p[3], a[3]; + for (int i = 0; i < 3; ++i) { + mul_v3_fl(wd->spherical_harmonics_coefs[i + 1], 0.5f); + len_r1[i] = len_v3(wd->spherical_harmonics_coefs[i + 1]); + mul_v3_fl(wd->spherical_harmonics_coefs[i + 1], 1.0f / len_r1[i]); + } + /* lr1_r0 = lenR1 / R0; */ + copy_v3_v3(lr1_r0, wd->spherical_harmonics_coefs[0]); + invert_v3(lr1_r0); + mul_v3_v3(lr1_r0, len_r1); + /* p = 1.0 + 2.0 * lr1_r0; */ + copy_v3_v3(p, lr1_r0); + mul_v3_fl(p, 2.0f); + add_v3_fl(p, 1.0f); + /* a = (1.0 - lr1_r0) / (1.0 + lr1_r0); */ + copy_v3_v3(a, lr1_r0); + add_v3_fl(a, 1.0f); + invert_v3(a); + negate_v3(lr1_r0); + add_v3_fl(lr1_r0, 1.0f); + mul_v3_v3(a, lr1_r0); + /* sh_coefs[4] = p; */ + copy_v3_v3(wd->spherical_harmonics_coefs[4], p); + /* sh_coefs[5] = R0 * a; */ + mul_v3_v3v3(wd->spherical_harmonics_coefs[5], wd->spherical_harmonics_coefs[0], a); + /* sh_coefs[0] = R0 * (1.0 - a) * (p + 1.0); */ + negate_v3(a); + add_v3_fl(a, 1.0f); + add_v3_fl(p, 1.0f); + mul_v3_v3(a, p); + mul_v3_v3(wd->spherical_harmonics_coefs[0], a); +#else + for (int i = 0; i < STUDIOLIGHT_SH_EFFECTIVE_COEFS_LEN; i++) { + /* Can't memcpy because of alignment */ + copy_v3_v3(wd->spherical_harmonics_coefs[i], sl->spherical_harmonics_coefs[i]); + } +#endif +#endif +} + +static void compute_parallel_lines_nor_and_dist(const float v1[2], const float v2[2], const float v3[2], float r_line[2]) +{ + sub_v2_v2v2(r_line, v2, v1); + /* Find orthogonal vector. */ + SWAP(float, r_line[0], r_line[1]); + r_line[0] = -r_line[0]; + /* Edge distances. */ + r_line[2] = dot_v2v2(r_line, v1); + r_line[3] = dot_v2v2(r_line, v3); + /* Make sure r_line[2] is the minimum. */ + if (r_line[2] > r_line[3]) { + SWAP(float, r_line[2], r_line[3]); + } +} + +void studiolight_update_light(WORKBENCH_PrivateData *wpd, const float light_direction[3]) +{ + wpd->shadow_changed = !compare_v3v3(wpd->cached_shadow_direction, light_direction, 1e-5f); + + if (wpd->shadow_changed) { + float up[3] = {0.0f, 0.0f, 1.0f}; + unit_m4(wpd->shadow_mat); + + /* TODO fix singularity. */ + copy_v3_v3(wpd->shadow_mat[2], light_direction); + cross_v3_v3v3(wpd->shadow_mat[0], wpd->shadow_mat[2], up); + normalize_v3(wpd->shadow_mat[0]); + cross_v3_v3v3(wpd->shadow_mat[1], wpd->shadow_mat[2], wpd->shadow_mat[0]); + + invert_m4_m4(wpd->shadow_inv, wpd->shadow_mat); + + copy_v3_v3(wpd->cached_shadow_direction, light_direction); + } + + float planes[6][4]; + DRW_culling_frustum_planes_get(planes); + /* we only need the far plane. */ + copy_v4_v4(wpd->shadow_far_plane, planes[2]); + + BoundBox frustum_corners; + DRW_culling_frustum_corners_get(&frustum_corners); + + mul_v3_mat3_m4v3(wpd->shadow_near_corners[0], wpd->shadow_inv, frustum_corners.vec[0]); + mul_v3_mat3_m4v3(wpd->shadow_near_corners[1], wpd->shadow_inv, frustum_corners.vec[3]); + mul_v3_mat3_m4v3(wpd->shadow_near_corners[2], wpd->shadow_inv, frustum_corners.vec[7]); + mul_v3_mat3_m4v3(wpd->shadow_near_corners[3], wpd->shadow_inv, frustum_corners.vec[4]); + + INIT_MINMAX(wpd->shadow_near_min, wpd->shadow_near_max); + for (int i = 0; i < 4; ++i) { + minmax_v3v3_v3(wpd->shadow_near_min, wpd->shadow_near_max, wpd->shadow_near_corners[i]); + } + + compute_parallel_lines_nor_and_dist(wpd->shadow_near_corners[0], wpd->shadow_near_corners[1], wpd->shadow_near_corners[2], wpd->shadow_near_sides[0]); + compute_parallel_lines_nor_and_dist(wpd->shadow_near_corners[1], wpd->shadow_near_corners[2], wpd->shadow_near_corners[0], wpd->shadow_near_sides[1]); +} + +static BoundBox *studiolight_object_shadow_bbox_get(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed) +{ + if ((oed->shadow_bbox_dirty) || (wpd->shadow_changed)) { + float tmp_mat[4][4]; + mul_m4_m4m4(tmp_mat, wpd->shadow_inv, ob->obmat); + + /* Get AABB in shadow space. */ + INIT_MINMAX(oed->shadow_min, oed->shadow_max); + + /* From object space to shadow space */ + BoundBox *bbox = BKE_object_boundbox_get(ob); + for (int i = 0; i < 8; ++i) { + float corner[3]; + mul_v3_m4v3(corner, tmp_mat, bbox->vec[i]); + minmax_v3v3_v3(oed->shadow_min, oed->shadow_max, corner); + } + oed->shadow_depth = oed->shadow_max[2] - oed->shadow_min[2]; + /* Extend towards infinity. */ + oed->shadow_max[2] += 1e4f; + + /* Get extended AABB in world space. */ + BKE_boundbox_init_from_minmax(&oed->shadow_bbox, oed->shadow_min, oed->shadow_max); + for (int i = 0; i < 8; ++i) { + mul_m4_v3(wpd->shadow_mat, oed->shadow_bbox.vec[i]); + } + oed->shadow_bbox_dirty = false; + } + + return &oed->shadow_bbox; +} + +bool studiolight_object_cast_visible_shadow(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed) +{ + BoundBox *shadow_bbox = studiolight_object_shadow_bbox_get(wpd, ob, oed); + return DRW_culling_box_test(shadow_bbox); +} + +float studiolight_object_shadow_distance(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed) +{ + BoundBox *shadow_bbox = studiolight_object_shadow_bbox_get(wpd, ob, oed); + + int corners[4] = {0, 3, 4, 7}; + float dist = 1e4f, dist_isect; + for (int i = 0; i < 4; ++i) { + if (isect_ray_plane_v3(shadow_bbox->vec[corners[i]], + wpd->cached_shadow_direction, + wpd->shadow_far_plane, + &dist_isect, true)) + { + if (dist_isect < dist) { + dist = dist_isect; + } + } + else { + /* All rays are parallels. If one fails, the other will too. */ + break; + } + } + return max_ii(dist - oed->shadow_depth, 0); +} + +bool studiolight_camera_in_object_shadow(WORKBENCH_PrivateData *wpd, Object *ob, WORKBENCH_ObjectData *oed) +{ + /* Just to be sure the min, max are updated. */ + studiolight_object_shadow_bbox_get(wpd, ob, oed); + + /* Test if near plane is in front of the shadow. */ + if (oed->shadow_min[2] > wpd->shadow_near_max[2]) { + return false; + } + + /* Separation Axis Theorem test */ + + /* Test bbox sides first (faster) */ + if ((oed->shadow_min[0] > wpd->shadow_near_max[0]) || + (oed->shadow_max[0] < wpd->shadow_near_min[0]) || + (oed->shadow_min[1] > wpd->shadow_near_max[1]) || + (oed->shadow_max[1] < wpd->shadow_near_min[1])) + { + return false; + } + + /* Test projected near rectangle sides */ + float pts[4][2] = { + {oed->shadow_min[0], oed->shadow_min[1]}, + {oed->shadow_min[0], oed->shadow_max[1]}, + {oed->shadow_max[0], oed->shadow_min[1]}, + {oed->shadow_max[0], oed->shadow_max[1]} + }; + + for (int i = 0; i < 2; ++i) { + float min_dst = FLT_MAX, max_dst = -FLT_MAX; + for (int j = 0; j < 4; ++j) { + float dst = dot_v2v2(wpd->shadow_near_sides[i], pts[j]); + /* Do min max */ + if (min_dst > dst) min_dst = dst; + if (max_dst < dst) max_dst = dst; + } + + if ((wpd->shadow_near_sides[i][2] > max_dst) || + (wpd->shadow_near_sides[i][3] < min_dst)) + { + return false; + } + } + + /* No separation axis found. Both shape intersect. */ + return true; +} diff --git a/source/blender/draw/engines/workbench/workbench_volume.c b/source/blender/draw/engines/workbench/workbench_volume.c new file mode 100644 index 00000000000..a4cd81e7fd2 --- /dev/null +++ b/source/blender/draw/engines/workbench/workbench_volume.c @@ -0,0 +1,227 @@ +/* + * Copyright 2018, Blender Foundation. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * Contributor(s): Blender Institute + * + */ + +/** \file workbench_volume.c + * \ingroup draw_engine + */ + +#include "workbench_private.h" + +#include "BKE_modifier.h" +#include "BKE_object.h" + +#include "BLI_rand.h" +#include "BLI_dynstr.h" + +#include "DNA_modifier_types.h" +#include "DNA_object_force_types.h" +#include "DNA_smoke_types.h" + +#include "GPU_draw.h" + +enum { + VOLUME_SH_SLICE = 0, + VOLUME_SH_COBA, + VOLUME_SH_CUBIC, +}; + +#define VOLUME_SH_MAX (1 << (VOLUME_SH_CUBIC + 1)) + +static struct { + struct GPUShader *volume_sh[VOLUME_SH_MAX]; + struct GPUShader *volume_coba_sh; + struct GPUShader *volume_slice_sh; + struct GPUShader *volume_slice_coba_sh; + struct GPUTexture *dummy_tex; + struct GPUTexture *dummy_coba_tex; +} e_data = {NULL}; + +extern char datatoc_workbench_volume_vert_glsl[]; +extern char datatoc_workbench_volume_frag_glsl[]; + +static GPUShader *volume_shader_get(bool slice, bool coba, bool cubic) +{ + int id = 0; + id += (slice) ? (1 << VOLUME_SH_SLICE) : 0; + id += (coba) ? (1 << VOLUME_SH_COBA) : 0; + id += (cubic) ? (1 << VOLUME_SH_CUBIC) : 0; + + if (!e_data.volume_sh[id]) { + DynStr *ds = BLI_dynstr_new(); + + if (slice) { + BLI_dynstr_append(ds, "#define VOLUME_SLICE\n"); + } + if (coba) { + BLI_dynstr_append(ds, "#define USE_COBA\n"); + } + if (cubic) { + BLI_dynstr_append(ds, "#define USE_TRICUBIC\n"); + } + + char *defines = BLI_dynstr_get_cstring(ds); + BLI_dynstr_free(ds); + + e_data.volume_sh[id] = DRW_shader_create( + datatoc_workbench_volume_vert_glsl, NULL, + datatoc_workbench_volume_frag_glsl, + defines); + + MEM_freeN(defines); + } + + return e_data.volume_sh[id]; +} + +void workbench_volume_engine_init(void) +{ + if (!e_data.dummy_tex) { + float pixel[4] = {0.0f, 0.0f, 0.0f, 0.0f}; + e_data.dummy_tex = GPU_texture_create_3D(1, 1, 1, GPU_RGBA8, pixel, NULL); + e_data.dummy_coba_tex = GPU_texture_create_1D(1, GPU_RGBA8, pixel, NULL); + } +} + +void workbench_volume_engine_free(void) +{ + for (int i = 0; i < VOLUME_SH_MAX; ++i) { + DRW_SHADER_FREE_SAFE(e_data.volume_sh[i]); + } + DRW_TEXTURE_FREE_SAFE(e_data.dummy_tex); + DRW_TEXTURE_FREE_SAFE(e_data.dummy_coba_tex); +} + +void workbench_volume_cache_init(WORKBENCH_Data *vedata) +{ + vedata->psl->volume_pass = DRW_pass_create("Volumes", DRW_STATE_WRITE_COLOR | DRW_STATE_BLEND_PREMUL | DRW_STATE_CULL_FRONT); +} + +void workbench_volume_cache_populate(WORKBENCH_Data *vedata, Scene *scene, Object *ob, ModifierData *md) +{ + SmokeModifierData *smd = (SmokeModifierData *)md; + SmokeDomainSettings *sds = smd->domain; + WORKBENCH_PrivateData *wpd = vedata->stl->g_data; + WORKBENCH_EffectInfo *effect_info = vedata->stl->effects; + DefaultTextureList *dtxl = DRW_viewport_texture_list_get(); + DRWShadingGroup *grp = NULL; + + /* Don't show smoke before simulation starts, this could be made an option in the future. */ + if (!sds->fluid || CFRA < sds->point_cache[0]->startframe) { + return; + } + + wpd->volumes_do = true; + if (sds->use_coba) { + GPU_create_smoke_coba_field(smd); + } + else if (!sds->wt || !(sds->viewsettings & MOD_SMOKE_VIEW_SHOWBIG)) { + GPU_create_smoke(smd, 0); + } + else if (sds->wt && (sds->viewsettings & MOD_SMOKE_VIEW_SHOWBIG)) { + GPU_create_smoke(smd, 1); + } + + if ((!sds->use_coba && sds->tex == NULL) || + (sds->use_coba && sds->tex_field == NULL)) + { + return; + } + + const bool use_slice = (sds->slice_method == MOD_SMOKE_SLICE_AXIS_ALIGNED && + sds->axis_slice_method == AXIS_SLICE_SINGLE); + const bool cubic_interp = (sds->interp_method == VOLUME_INTERP_CUBIC); + GPUShader *sh = volume_shader_get(use_slice, sds->use_coba, cubic_interp); + + if (use_slice) { + float invviewmat[4][4]; + DRW_viewport_matrix_get(invviewmat, DRW_MAT_VIEWINV); + + const int axis = (sds->slice_axis == SLICE_AXIS_AUTO) + ? axis_dominant_v3_single(invviewmat[2]) + : sds->slice_axis - 1; + float dim[3]; + BKE_object_dimensions_get(ob, dim); + /* 0.05f to acheive somewhat the same opacity as the full view. */ + float step_length = max_ff(1e-16f, dim[axis] * 0.05f); + + grp = DRW_shgroup_create(sh, vedata->psl->volume_pass); + DRW_shgroup_uniform_float_copy(grp, "slicePosition", sds->slice_depth); + DRW_shgroup_uniform_int_copy(grp, "sliceAxis", axis); + DRW_shgroup_uniform_float_copy(grp, "stepLength", step_length); + DRW_shgroup_state_disable(grp, DRW_STATE_CULL_FRONT); + } + else { + double noise_ofs; + BLI_halton_1D(3, 0.0, effect_info->jitter_index, &noise_ofs); + float dim[3], step_length, max_slice; + float slice_ct[3] = {sds->res[0], sds->res[1], sds->res[2]}; + mul_v3_fl(slice_ct, max_ff(0.001f, sds->slice_per_voxel)); + max_slice = max_fff(slice_ct[0], slice_ct[1], slice_ct[2]); + BKE_object_dimensions_get(ob, dim); + invert_v3(slice_ct); + mul_v3_v3(dim, slice_ct); + step_length = len_v3(dim); + + grp = DRW_shgroup_create(sh, vedata->psl->volume_pass); + DRW_shgroup_uniform_vec4(grp, "viewvecs[0]", (float *)wpd->viewvecs, 3); + DRW_shgroup_uniform_int_copy(grp, "samplesLen", max_slice); + DRW_shgroup_uniform_float_copy(grp, "stepLength", step_length); + DRW_shgroup_uniform_float_copy(grp, "noiseOfs", noise_ofs); + DRW_shgroup_state_enable(grp, DRW_STATE_CULL_FRONT); + } + + if (sds->use_coba) { + DRW_shgroup_uniform_texture(grp, "densityTexture", sds->tex_field); + DRW_shgroup_uniform_texture(grp, "transferTexture", sds->tex_coba); + } + else { + DRW_shgroup_uniform_texture(grp, "densityTexture", sds->tex); + DRW_shgroup_uniform_texture(grp, "shadowTexture", sds->tex_shadow); + DRW_shgroup_uniform_texture(grp, "flameTexture", (sds->tex_flame) ? sds->tex_flame : e_data.dummy_tex); + DRW_shgroup_uniform_texture(grp, "flameColorTexture", (sds->tex_flame) ? sds->tex_flame_coba : e_data.dummy_coba_tex); + } + DRW_shgroup_uniform_texture_ref(grp, "depthBuffer", &dtxl->depth); + DRW_shgroup_uniform_float_copy(grp, "densityScale", 10.0f * sds->display_thickness); + + if (use_slice) { + DRW_shgroup_call_object_add(grp, DRW_cache_quad_get(), ob); + } + else { + DRW_shgroup_call_object_add(grp, DRW_cache_cube_get(), ob); + } + + BLI_addtail(&wpd->smoke_domains, BLI_genericNodeN(smd)); +} + +void workbench_volume_smoke_textures_free(WORKBENCH_PrivateData *wpd) +{ + /* Free Smoke Textures after rendering */ + /* XXX This is a waste of processing and GPU bandwidth if nothing + * is updated. But the problem is since Textures are stored in the + * modifier we don't want them to take precious VRAM if the + * modifier is not used for display. We should share them for + * all viewport in a redraw at least. */ + for (LinkData *link = wpd->smoke_domains.first; link; link = link->next) { + SmokeModifierData *smd = (SmokeModifierData *)link->data; + GPU_free_smoke(smd); + } + BLI_freelistN(&wpd->smoke_domains); +} |