diff options
Diffstat (limited to 'source/blender/draw/modes/paint_weight_mode.c')
-rw-r--r-- | source/blender/draw/modes/paint_weight_mode.c | 254 |
1 files changed, 254 insertions, 0 deletions
diff --git a/source/blender/draw/modes/paint_weight_mode.c b/source/blender/draw/modes/paint_weight_mode.c new file mode 100644 index 00000000000..e139b4af97f --- /dev/null +++ b/source/blender/draw/modes/paint_weight_mode.c @@ -0,0 +1,254 @@ +/* + * 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 blender/draw/modes/paint_weight_mode.c + * \ingroup draw + */ + +#include "DRW_engine.h" +#include "DRW_render.h" + +/* If builtin shaders are needed */ +#include "GPU_shader.h" + +#include "draw_common.h" + +#include "draw_mode_engines.h" + +#include "DNA_mesh_types.h" + +#include "BKE_mesh.h" + +extern struct GPUUniformBuffer *globals_ubo; /* draw_common.c */ +extern struct GlobalsUboStorage ts; /* draw_common.c */ + +extern char datatoc_paint_wire_vert_glsl[]; +extern char datatoc_paint_wire_frag_glsl[]; +extern char datatoc_paint_vert_frag_glsl[]; +extern char datatoc_common_globals_lib_glsl[]; + +/* *********** LISTS *********** */ + +typedef struct PAINT_WEIGHT_PassList { + struct DRWPass *weight_faces; + struct DRWPass *wire_overlay; + struct DRWPass *face_overlay; + struct DRWPass *vert_overlay; +} PAINT_WEIGHT_PassList; + +typedef struct PAINT_WEIGHT_StorageList { + struct PAINT_WEIGHT_PrivateData *g_data; +} PAINT_WEIGHT_StorageList; + +typedef struct PAINT_WEIGHT_Data { + void *engine_type; + DRWViewportEmptyList *fbl; + DRWViewportEmptyList *txl; + PAINT_WEIGHT_PassList *psl; + PAINT_WEIGHT_StorageList *stl; +} PAINT_WEIGHT_Data; + +/* *********** STATIC *********** */ + +static struct { + struct GPUShader *weight_face_shader; + struct GPUShader *wire_overlay_shader; + struct GPUShader *face_overlay_shader; + struct GPUShader *vert_overlay_shader; + int actdef; +} e_data = {NULL}; /* Engine data */ + +typedef struct PAINT_WEIGHT_PrivateData { + DRWShadingGroup *fweights_shgrp; + DRWShadingGroup *lwire_shgrp; + DRWShadingGroup *face_shgrp; + DRWShadingGroup *vert_shgrp; +} PAINT_WEIGHT_PrivateData; + +/* *********** FUNCTIONS *********** */ + +static void PAINT_WEIGHT_engine_init(void *UNUSED(vedata)) +{ + const DRWContextState *draw_ctx = DRW_context_state_get(); + + if (e_data.actdef != draw_ctx->obact->actdef) { + e_data.actdef = draw_ctx->obact->actdef; + + BKE_mesh_batch_cache_dirty(draw_ctx->obact->data, BKE_MESH_BATCH_DIRTY_ALL); + } + + if (!e_data.weight_face_shader) { + e_data.weight_face_shader = GPU_shader_get_builtin_shader(GPU_SHADER_SIMPLE_LIGHTING_SMOOTH_COLOR_ALPHA); + } + + if (!e_data.wire_overlay_shader) { + e_data.wire_overlay_shader = DRW_shader_create_with_lib( + datatoc_paint_wire_vert_glsl, NULL, + datatoc_paint_wire_frag_glsl, + datatoc_common_globals_lib_glsl, "#define WEIGHT_MODE\n"); + } + + if (!e_data.face_overlay_shader) { + e_data.face_overlay_shader = GPU_shader_get_builtin_shader(GPU_SHADER_3D_UNIFORM_COLOR); + } + + if (!e_data.vert_overlay_shader) { + e_data.vert_overlay_shader = DRW_shader_create_with_lib( + datatoc_paint_wire_vert_glsl, NULL, + datatoc_paint_vert_frag_glsl, + datatoc_common_globals_lib_glsl, NULL); + } +} + +static float world_light; + +static void PAINT_WEIGHT_cache_init(void *vedata) +{ + PAINT_WEIGHT_PassList *psl = ((PAINT_WEIGHT_Data *)vedata)->psl; + PAINT_WEIGHT_StorageList *stl = ((PAINT_WEIGHT_Data *)vedata)->stl; + + if (!stl->g_data) { + /* Alloc transient pointers */ + stl->g_data = MEM_mallocN(sizeof(*stl->g_data), __func__); + } + + { + /* Create a pass */ + psl->weight_faces = DRW_pass_create( + "Weight Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + + stl->g_data->fweights_shgrp = DRW_shgroup_create(e_data.weight_face_shader, psl->weight_faces); + + static float light[3] = {-0.3f, 0.5f, 1.0f}; + static float alpha = 1.0f; + DRW_shgroup_uniform_vec3(stl->g_data->fweights_shgrp, "light", light, 1); + DRW_shgroup_uniform_float(stl->g_data->fweights_shgrp, "alpha", &alpha, 1); + DRW_shgroup_uniform_float(stl->g_data->fweights_shgrp, "global", &world_light, 1); + } + + { + psl->wire_overlay = DRW_pass_create( + "Wire Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + + stl->g_data->lwire_shgrp = DRW_shgroup_create(e_data.wire_overlay_shader, psl->wire_overlay); + } + + { + psl->face_overlay = DRW_pass_create( + "Face Mask Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS | DRW_STATE_BLEND); + + stl->g_data->face_shgrp = DRW_shgroup_create(e_data.face_overlay_shader, psl->face_overlay); + + static float col[4] = {1.0f, 1.0f, 1.0f, 0.2f}; + DRW_shgroup_uniform_vec4(stl->g_data->face_shgrp, "color", col, 1); + } + + { + psl->vert_overlay = DRW_pass_create( + "Vert Mask Pass", + DRW_STATE_WRITE_COLOR | DRW_STATE_WRITE_DEPTH | DRW_STATE_DEPTH_LESS); + + stl->g_data->vert_shgrp = DRW_shgroup_create(e_data.vert_overlay_shader, psl->vert_overlay); + } +} + +static void PAINT_WEIGHT_cache_populate(void *vedata, Object *ob) +{ + PAINT_WEIGHT_StorageList *stl = ((PAINT_WEIGHT_Data *)vedata)->stl; + const DRWContextState *draw_ctx = DRW_context_state_get(); + + if ((ob->type == OB_MESH) && (ob == draw_ctx->obact)) { + IDProperty *ces_mode_pw = BKE_layer_collection_engine_evaluated_get(ob, COLLECTION_MODE_PAINT_WEIGHT, ""); + const Mesh *me = ob->data; + const bool use_wire = BKE_collection_engine_property_value_get_bool(ces_mode_pw, "use_wire"); + const bool use_surface = DRW_object_is_mode_shade(ob) == true; + const bool use_face_sel = (me->editflag & ME_EDIT_PAINT_FACE_SEL) != 0; + const bool use_vert_sel = (me->editflag & ME_EDIT_PAINT_VERT_SEL) != 0; + struct Gwn_Batch *geom; + + world_light = BKE_collection_engine_property_value_get_bool(ces_mode_pw, "use_shading") ? 0.5f : 1.0f; + + if (use_surface) { + geom = DRW_cache_mesh_surface_weights_get(ob); + DRW_shgroup_call_add(stl->g_data->fweights_shgrp, geom, ob->obmat); + } + + if (use_face_sel || use_wire) { + geom = DRW_cache_mesh_edges_paint_overlay_get(ob, use_wire, use_face_sel); + DRW_shgroup_call_add(stl->g_data->lwire_shgrp, geom, ob->obmat); + } + + if (use_face_sel) { + geom = DRW_cache_mesh_faces_weight_overlay_get(ob); + DRW_shgroup_call_add(stl->g_data->face_shgrp, geom, ob->obmat); + } + + if (use_vert_sel) { + geom = DRW_cache_mesh_verts_weight_overlay_get(ob); + DRW_shgroup_call_add(stl->g_data->vert_shgrp, geom, ob->obmat); + } + } +} + +static void PAINT_WEIGHT_draw_scene(void *vedata) +{ + PAINT_WEIGHT_PassList *psl = ((PAINT_WEIGHT_Data *)vedata)->psl; + + DRW_draw_pass(psl->weight_faces); + DRW_draw_pass(psl->face_overlay); + DRW_draw_pass(psl->wire_overlay); + DRW_draw_pass(psl->vert_overlay); +} + +static void PAINT_WEIGHT_engine_free(void) +{ + DRW_SHADER_FREE_SAFE(e_data.wire_overlay_shader); + DRW_SHADER_FREE_SAFE(e_data.vert_overlay_shader); +} + +void PAINT_WEIGHT_collection_settings_create(IDProperty *properties) +{ + BLI_assert(properties && + properties->type == IDP_GROUP && + properties->subtype == IDP_GROUP_SUB_MODE_PAINT_WEIGHT); + + BKE_collection_engine_property_add_bool(properties, "use_shading", true); + BKE_collection_engine_property_add_bool(properties, "use_wire", false); +} + +static const DrawEngineDataSize PAINT_WEIGHT_data_size = DRW_VIEWPORT_DATA_SIZE(PAINT_WEIGHT_Data); + +DrawEngineType draw_engine_paint_weight_type = { + NULL, NULL, + N_("PaintWeightMode"), + &PAINT_WEIGHT_data_size, + &PAINT_WEIGHT_engine_init, + &PAINT_WEIGHT_engine_free, + &PAINT_WEIGHT_cache_init, + &PAINT_WEIGHT_cache_populate, + NULL, + NULL, + &PAINT_WEIGHT_draw_scene, + NULL, +}; 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