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(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);
}
}
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_view_is_persp_get(NULL);
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 eGPUTextureFormat 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;
}