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Fix DDGI iradiance to use debanding by applying quantization error to reduce yellowish artifacts due to R11G11B10 format

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This commit is contained in:
Wojtek Figat
2025-12-16 23:56:45 +01:00
parent 8bf51512ac
commit 0e76585709
5 changed files with 67 additions and 0 deletions
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4
Source/Engine/Renderer/GI/DynamicDiffuseGlobalIllumination.cpp
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@@ -68,6 +68,8 @@ GPU_CB_STRUCT(Data0 {
Int4 ProbeScrollClears[4];
Float3 ViewDir;
float Padding1;
Float3 QuantizationError;
int32 FrameIndexMod8;
});
GPU_CB_STRUCT(Data1 {
@@ -535,6 +537,8 @@ bool DynamicDiffuseGlobalIlluminationPass::RenderInner(RenderContext& renderCont
data.TemporalTime = renderContext.List->Setup.UseTemporalAAJitter ? RenderTools::ComputeTemporalTime() : 0.0f;
data.ViewDir = renderContext.View.Direction;
data.SkyboxIntensity = renderContext.List->Sky ? renderContext.List->Sky->GetIndirectLightingIntensity() : 1.0f;
data.QuantizationError = RenderTools::GetColorQuantizationError(ddgiData.ProbesIrradiance->Format());
data.FrameIndexMod8 = (int32)(Engine::FrameCount % 8);
GBufferPass::SetInputs(renderContext.View, data.GBuffer);
context->UpdateCB(_cb0, &data);
context->BindCB(0, _cb0);