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path: root/source/blender/draw/engines/workbench/workbench_effect_taa.c
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Diffstat (limited to 'source/blender/draw/engines/workbench/workbench_effect_taa.c')
-rw-r--r--source/blender/draw/engines/workbench/workbench_effect_taa.c305
1 files changed, 0 insertions, 305 deletions
diff --git a/source/blender/draw/engines/workbench/workbench_effect_taa.c b/source/blender/draw/engines/workbench/workbench_effect_taa.c
deleted file mode 100644
index e2864f8c832..00000000000
--- a/source/blender/draw/engines/workbench/workbench_effect_taa.c
+++ /dev/null
@@ -1,305 +0,0 @@
-/*
- * 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.
- *
- * Copyright 2016, Blender Foundation.
- */
-
-/** \file
- * \ingroup draw_engine
- */
-
-#include "workbench_private.h"
-#include "BLI_jitter_2d.h"
-
-static struct {
- struct GPUShader *effect_taa_sh;
- float jitter_5[5][2];
- float jitter_8[8][2];
- float jitter_11[11][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_f(table[index][0]) + square_f(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_f(table[i][0] - table[j][0]) +
- square_f(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_5, 5);
- workbench_taa_jitter_init_order(e_data.jitter_8, 8);
- workbench_taa_jitter_init_order(e_data.jitter_11, 11);
- 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;
- const Scene *scene = DRW_context_state_get()->scene;
- int result;
- if (workbench_is_taa_enabled(wpd)) {
- if (DRW_state_is_image_render()) {
- const DRWContextState *draw_ctx = DRW_context_state_get();
- if (draw_ctx->v3d) {
- result = scene->display.viewport_aa;
- }
- else {
- result = scene->display.render_aa;
- }
- }
- else {
- result = wpd->preferences->viewport_aa;
- }
- }
- else {
- /* when no TAA is disabled return 1 to render a single sample
- * see `workbench_render.c` */
- result = 1;
- }
- return result;
-}
-
-int workbench_num_viewport_rendering_iterations(WORKBENCH_Data *UNUSED(vedata))
-{
- const DRWContextState *draw_ctx = DRW_context_state_get();
- const Scene *scene = draw_ctx->scene;
- int result = DRW_state_is_image_render() ? scene->display.viewport_aa : 1;
- result = MAX2(result, 1);
- 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();
- }
-
- effect_info->view = NULL;
-
- /* reset complete drawing when navigating. */
- if (effect_info->jitter_index != 0) {
- if (rv3d && rv3d->rflag & (RV3D_NAVIGATING | RV3D_PAINTING)) {
- effect_info->jitter_index = 0;
- }
- }
-
- if (effect_info->view_updated) {
- effect_info->jitter_index = 0;
- effect_info->view_updated = false;
- }
-
- {
- float persmat[4][4];
- DRW_view_persmat_get(NULL, persmat, false);
- if (!equals_m4m4(persmat, effect_info->last_mat)) {
- copy_m4_m4(effect_info->last_mat, persmat);
- 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;
- const WORKBENCH_PrivateData *wpd = stl->g_data;
-
- {
- const eGPUTextureFormat hist_buffer_format = workbench_color_texture_format(wpd);
- DRW_texture_ensure_fullscreen_2d(&txl->history_buffer_tx, hist_buffer_format, 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(grp, DRW_cache_fullscreen_quad_get(), NULL);
-
- return pass;
-}
-
-void workbench_taa_draw_scene_start(WORKBENCH_Data *vedata)
-{
- WORKBENCH_StorageList *stl = vedata->stl;
- WORKBENCH_EffectInfo *effect_info = stl->effects;
- WORKBENCH_PrivateData *wpd = stl->g_data;
-
- const float *viewport_size = DRW_viewport_size_get();
- const DRWView *default_view = DRW_view_default_get();
- int num_samples = 8;
- float(*samples)[2];
-
- num_samples = workbench_taa_calculate_num_iterations(vedata);
- switch (num_samples) {
- default:
- case 5:
- samples = e_data.jitter_5;
- break;
- case 8:
- samples = e_data.jitter_8;
- break;
- case 11:
- samples = e_data.jitter_11;
- break;
- case 16:
- samples = e_data.jitter_16;
- break;
- case 32:
- samples = e_data.jitter_32;
- break;
- }
-
- const int jitter_index = effect_info->jitter_index;
- const float *transform_offset = samples[jitter_index];
- effect_info->taa_mix_factor = 1.0f / (jitter_index + 1);
- effect_info->jitter_index = (jitter_index + 1) % num_samples;
- /* Copy jitter index to Cavity iteration */
- wpd->ssao_params[3] = effect_info->jitter_index;
-
- /* construct new matrices from transform delta */
- float winmat[4][4], viewmat[4][4], persmat[4][4];
- DRW_view_winmat_get(default_view, winmat, false);
- DRW_view_viewmat_get(default_view, viewmat, false);
- DRW_view_persmat_get(default_view, persmat, false);
-
- window_translate_m4(winmat,
- persmat,
- transform_offset[0] / viewport_size[0],
- transform_offset[1] / viewport_size[1]);
-
- if (effect_info->view) {
- /* When rendering just update the view. This avoids recomputing the culling. */
- DRW_view_update_sub(effect_info->view, viewmat, winmat);
- }
- else {
- /* TAA is not making a big change to the matrices.
- * Reuse the main view culling by creating a subview. */
- effect_info->view = DRW_view_create_sub(default_view, viewmat, winmat);
- }
- DRW_view_set_active(effect_info->view);
-}
-
-void workbench_taa_draw_scene_end(WORKBENCH_Data *vedata)
-{
- /*
- * If first frame then 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_view_set_active(NULL);
- }
-
- 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;
- }
- }
-}
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