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Code Releases Wiki Activity

Replace BRDF approximation with a DFG LUT

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This commit is contained in:
LiveTrower
2025-03-10 13:12:44 -06:00
parent 1a1cc0f7b0
commit 44408eabaa
8 changed files with 250 additions and 24 deletions
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48
servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.cpp
View File

@@ -3205,6 +3205,14 @@ void RenderForwardClustered::_update_render_base_uniform_set() {
uniforms.push_back(u);
}
{
RD::Uniform u;
u.binding = 16;
u.uniform_type = RD::UNIFORM_TYPE_TEXTURE;
u.append_id(dfg_lut.texture);
uniforms.push_back(u);
}
render_base_uniform_set = RD::get_singleton()->uniform_set_create(uniforms, scene_shader.default_shader_rd, SCENE_UNIFORM_SET);
}
}
@@ -4946,6 +4954,45 @@ RenderForwardClustered::RenderForwardClustered() {
best_fit_normal.shader.version_free(best_fit_normal.shader_version);
}
/* DFG LUT */
{
Vector<String> modes;
modes.push_back("\n");
dfg_lut.shader.initialize(modes);
dfg_lut.shader_version = dfg_lut.shader.version_create();
dfg_lut.pipeline = RD::get_singleton()->compute_pipeline_create(dfg_lut.shader.version_get_shader(dfg_lut.shader_version, 0));
RD::TextureFormat tformat;
tformat.format = RD::DATA_FORMAT_R16G16B16A16_SFLOAT;
tformat.width = 128;
tformat.height = 128;
tformat.usage_bits = RD::TEXTURE_USAGE_SAMPLING_BIT | RD::TEXTURE_USAGE_STORAGE_BIT;
tformat.texture_type = RD::TEXTURE_TYPE_2D;
dfg_lut.texture = RD::get_singleton()->texture_create(tformat, RD::TextureView());
RID shader = dfg_lut.shader.version_get_shader(dfg_lut.shader_version, 0);
ERR_FAIL_COND(shader.is_null());
Vector<RD::Uniform> uniforms;
{
RD::Uniform u;
u.binding = 0;
u.uniform_type = RD::UNIFORM_TYPE_IMAGE;
u.append_id(dfg_lut.texture);
uniforms.push_back(u);
}
RID uniform_set = RD::get_singleton()->uniform_set_create(uniforms, shader, 0);
RD::ComputeListID compute_list = RD::get_singleton()->compute_list_begin();
RD::get_singleton()->compute_list_bind_compute_pipeline(compute_list, dfg_lut.pipeline);
RD::get_singleton()->compute_list_bind_uniform_set(compute_list, uniform_set, 0);
RD::get_singleton()->compute_list_dispatch_threads(compute_list, tformat.width, tformat.height, 1);
RD::get_singleton()->compute_list_end();
dfg_lut.shader.version_free(dfg_lut.shader_version);
}
_update_shader_quality_settings();
_update_global_pipeline_data_requirements_from_project();
@@ -4995,6 +5042,7 @@ RenderForwardClustered::~RenderForwardClustered() {
RD::get_singleton()->free(shadow_sampler);
RSG::light_storage->directional_shadow_atlas_set_size(0);
RD::get_singleton()->free(best_fit_normal.texture);
RD::get_singleton()->free(dfg_lut.texture);
{
for (const RID &rid : scene_state.uniform_buffers) {

8
servers/rendering/renderer_rd/forward_clustered/render_forward_clustered.h
View File

@@ -43,6 +43,7 @@
#include "servers/rendering/renderer_rd/forward_clustered/scene_shader_forward_clustered.h"
#include "servers/rendering/renderer_rd/renderer_scene_render_rd.h"
#include "servers/rendering/renderer_rd/shaders/forward_clustered/best_fit_normal.glsl.gen.h"
#include "servers/rendering/renderer_rd/shaders/forward_clustered/integrate_dfg.glsl.gen.h"
#define RB_SCOPE_FORWARD_CLUSTERED SNAME("forward_clustered")
@@ -180,6 +181,13 @@ private:
RID texture;
} best_fit_normal;
struct IntegrateDFG {
IntegrateDfgShaderRD shader;
RID shader_version;
RID pipeline;
RID texture;
} dfg_lut;
enum PassMode {
PASS_MODE_COLOR,
PASS_MODE_SHADOW,