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Refactor DDGI probes to use variable ray count depending on the probe location relative to the view frustum

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This commit is contained in:
Wojciech Figat
2022-12-15 17:33:44 +01:00
parent 3fcbcacd43
commit 1cf6c5233e
13 changed files with 106 additions and 89 deletions
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2
Source/Engine/Graphics/Materials/MaterialShaderFeatures.cpp
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@@ -170,7 +170,7 @@ bool GlobalIlluminationFeature::Bind(MaterialShader::BindParameters& params, Spa
// Bind DDGI data
data.DDGI = bindingDataDDGI.Constants;
params.GPUContext->BindSR(srv + 0, bindingDataDDGI.ProbesState);
params.GPUContext->BindSR(srv + 0, bindingDataDDGI.ProbesData);
params.GPUContext->BindSR(srv + 1, bindingDataDDGI.ProbesDistance);
params.GPUContext->BindSR(srv + 2, bindingDataDDGI.ProbesIrradiance);
}

20
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
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@@ -87,7 +87,7 @@ public:
int32 ProbesCountTotal = 0;
Int3 ProbeCounts = Int3::Zero;
GPUTexture* ProbesTrace = nullptr; // Probes ray tracing: (RGB: hit radiance, A: hit distance)
GPUTexture* ProbesState = nullptr; // Probes state: (RGB: world-space offset, A: state)
GPUTexture* ProbesData = nullptr; // Probes data: (RGB: world-space offset, A: state/data)
GPUTexture* ProbesIrradiance = nullptr; // Probes irradiance (RGB: sRGB color)
GPUTexture* ProbesDistance = nullptr; // Probes distance (R: mean distance, G: mean distance^2)
GPUBuffer* ActiveProbes = nullptr; // List with indices of the active probes (built during probes classification to use indirect dispatches for probes updating), counter at 0
@@ -97,7 +97,7 @@ public:
FORCE_INLINE void Release()
{
RenderTargetPool::Release(ProbesTrace);
RenderTargetPool::Release(ProbesState);
RenderTargetPool::Release(ProbesData);
RenderTargetPool::Release(ProbesIrradiance);
RenderTargetPool::Release(ProbesDistance);
SAFE_DELETE_GPU_RESOURCE(ActiveProbes);
@@ -373,7 +373,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
#define INIT_TEXTURE(texture, format, width, height) desc.Format = format; desc.Width = width; desc.Height = height; ddgiData.texture = RenderTargetPool::Get(desc); if (!ddgiData.texture) return true; memUsage += ddgiData.texture->GetMemoryUsage(); RENDER_TARGET_POOL_SET_NAME(ddgiData.texture, "DDGI." #texture)
desc.Flags = GPUTextureFlags::ShaderResource | GPUTextureFlags::UnorderedAccess;
INIT_TEXTURE(ProbesTrace, PixelFormat::R16G16B16A16_Float, probeRaysCount, Math::Min(probesCountCascade, DDGI_TRACE_RAYS_PROBES_COUNT_LIMIT));
INIT_TEXTURE(ProbesState, PixelFormat::R8G8B8A8_SNorm, probesCountTotalX, probesCountTotalY);
INIT_TEXTURE(ProbesData, PixelFormat::R8G8B8A8_SNorm, probesCountTotalX, probesCountTotalY);
INIT_TEXTURE(ProbesIrradiance, PixelFormat::R11G11B10_Float, probesCountTotalX * (DDGI_PROBE_RESOLUTION_IRRADIANCE + 2), probesCountTotalY * (DDGI_PROBE_RESOLUTION_IRRADIANCE + 2));
INIT_TEXTURE(ProbesDistance, PixelFormat::R16G16_Float, probesCountTotalX * (DDGI_PROBE_RESOLUTION_DISTANCE + 2), probesCountTotalY * (DDGI_PROBE_RESOLUTION_DISTANCE + 2));
#undef INIT_TEXTURE
@@ -393,7 +393,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
{
// Clear probes
PROFILE_GPU("Clear");
context->ClearUA(ddgiData.ProbesState, Float4::Zero);
context->ClearUA(ddgiData.ProbesData, Float4::Zero);
context->ClearUA(ddgiData.ProbesIrradiance, Float4::Zero);
context->ClearUA(ddgiData.ProbesDistance, Float4::Zero);
}
@@ -458,7 +458,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
ddgiData.Result.Constants.IrradianceGamma = 1.5f;
ddgiData.Result.Constants.IndirectLightingIntensity = indirectLightingIntensity;
ddgiData.Result.Constants.FallbackIrradiance = fallbackIrradiance.ToFloat3() * fallbackIrradiance.A;
ddgiData.Result.ProbesState = ddgiData.ProbesState->View();
ddgiData.Result.ProbesData = ddgiData.ProbesData->View();
ddgiData.Result.ProbesDistance = ddgiData.ProbesDistance->View();
ddgiData.Result.ProbesIrradiance = ddgiData.ProbesIrradiance->View();
@@ -516,7 +516,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
threadGroupsX = Math::DivideAndRoundUp(probesCountCascade, DDGI_PROBE_CLASSIFY_GROUP_SIZE);
context->BindSR(0, bindingDataSDF.Texture ? bindingDataSDF.Texture->ViewVolume() : nullptr);
context->BindSR(1, bindingDataSDF.TextureMip ? bindingDataSDF.TextureMip->ViewVolume() : nullptr);
context->BindUA(0, ddgiData.Result.ProbesState);
context->BindUA(0, ddgiData.Result.ProbesData);
context->BindUA(1, ddgiData.ActiveProbes->View());
Data1 data;
data.CascadeIndex = cascadeIndex;
@@ -558,7 +558,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
context->BindSR(4, bindingDataSurfaceAtlas.Objects ? bindingDataSurfaceAtlas.Objects->View() : nullptr);
context->BindSR(5, bindingDataSurfaceAtlas.AtlasDepth->View());
context->BindSR(6, bindingDataSurfaceAtlas.AtlasLighting->View());
context->BindSR(7, ddgiData.Result.ProbesState);
context->BindSR(7, ddgiData.Result.ProbesData);
context->BindSR(8, skybox);
context->BindSR(9, ddgiData.ActiveProbes->View());
context->BindUA(0, ddgiData.ProbesTrace->View());
@@ -570,7 +570,7 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
// Update probes irradiance and distance textures (one thread-group per probe)
{
PROFILE_GPU_CPU_NAMED("Update Probes");
context->BindSR(0, ddgiData.Result.ProbesState);
context->BindSR(0, ddgiData.Result.ProbesData);
context->BindSR(1, ddgiData.ProbesTrace->View());
context->BindSR(2, ddgiData.ActiveProbes->View());
context->BindUA(0, ddgiData.Result.ProbesIrradiance);
@@ -682,7 +682,7 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
context->BindSR(1, renderContext.Buffers->GBuffer1->View());
context->BindSR(2, renderContext.Buffers->GBuffer2->View());
context->BindSR(3, renderContext.Buffers->DepthBuffer->View());
context->BindSR(4, ddgiData.Result.ProbesState);
context->BindSR(4, ddgiData.Result.ProbesData);
context->BindSR(5, ddgiData.Result.ProbesDistance);
context->BindSR(6, ddgiData.Result.ProbesIrradiance);
context->SetViewportAndScissors(renderContext.View.ScreenSize.X, renderContext.View.ScreenSize.Y);
@@ -724,7 +724,7 @@ bool DynamicDiffuseGlobalIlluminationPass::Render(RenderContext& renderContext,
context->SetRenderTarget(*renderContext.Buffers->DepthBuffer, ToSpan(targetBuffers, ARRAY_COUNT(targetBuffers)));
{
// Pass DDGI data to the material
_debugMaterial->SetParameterValue(TEXT("ProbesState"), Variant(ddgiData.ProbesState));
_debugMaterial->SetParameterValue(TEXT("ProbesData"), Variant(ddgiData.ProbesData));
_debugMaterial->SetParameterValue(TEXT("ProbesIrradiance"), Variant(ddgiData.ProbesIrradiance));
_debugMaterial->SetParameterValue(TEXT("ProbesDistance"), Variant(ddgiData.ProbesDistance));
auto cb = _debugMaterial->GetShader()->GetCB(3);

2
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.h
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@@ -34,7 +34,7 @@ public:
struct BindingData
{
ConstantsData Constants;
GPUTextureView* ProbesState;
GPUTextureView* ProbesData;
GPUTextureView* ProbesDistance;
GPUTextureView* ProbesIrradiance;
};

2
Source/Engine/Renderer/GI/GlobalSurfaceAtlasPass.cpp
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@@ -1056,7 +1056,7 @@ bool GlobalSurfaceAtlasPass::Render(RenderContext& renderContext, GPUContext* co
PROFILE_GPU_CPU_NAMED("DDGI");
data.DDGI = bindingDataDDGI.Constants;
data.Light.Radius = giSettings.BounceIntensity / bindingDataDDGI.Constants.IndirectLightingIntensity; // Reuse for smaller CB
context->BindSR(5, bindingDataDDGI.ProbesState);
context->BindSR(5, bindingDataDDGI.ProbesData);
context->BindSR(6, bindingDataDDGI.ProbesDistance);
context->BindSR(7, bindingDataDDGI.ProbesIrradiance);
context->UpdateCB(_cb0, &data);

2
Source/Engine/Renderer/VolumetricFogPass.cpp
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@@ -671,7 +671,7 @@ void VolumetricFogPass::Render(RenderContext& renderContext)
int32 csIndex;
if (useDDGI)
{
context->BindSR(5, bindingDataDDGI.ProbesState);
context->BindSR(5, bindingDataDDGI.ProbesData);
context->BindSR(6, bindingDataDDGI.ProbesDistance);
context->BindSR(7, bindingDataDDGI.ProbesIrradiance);
csIndex = 1;