void SetParameters(
FRHICommandList& RHICmdList,
const FViewInfo& View,
FIntPoint TileListGroupSizeValue,
FSceneRenderTargetItem& DistanceFieldNormal,
const FDistanceFieldAOParameters& Parameters,
FSceneRenderTargetItem& SpecularOcclusionBuffer)
{
FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
FGlobalShader::SetParameters(RHICmdList, ShaderRHI, View);
DeferredParameters.Set(RHICmdList, ShaderRHI, View);
ObjectParameters.Set(RHICmdList, ShaderRHI, GAOCulledObjectBuffers.Buffers);
AOParameters.Set(RHICmdList, ShaderRHI, Parameters);
ScreenGridParameters.Set(RHICmdList, ShaderRHI, View, DistanceFieldNormal);
FAOSampleData2 AOSampleData;
TArray<FVector, TInlineAllocator<9> > SampleDirections;
GetSpacedVectors(SampleDirections);
for (int32 SampleIndex = 0; SampleIndex < NumConeSampleDirections; SampleIndex++)
{
AOSampleData.SampleDirections[SampleIndex] = FVector4(SampleDirections[SampleIndex]);
}
SetUniformBufferParameterImmediate(RHICmdList, ShaderRHI, GetUniformBufferParameter<FAOSampleData2>(), AOSampleData);
FTileIntersectionResources* TileIntersectionResources = View.ViewState->AOTileIntersectionResources;
SetSRVParameter(RHICmdList, ShaderRHI, TileHeadDataUnpacked, TileIntersectionResources->TileHeadDataUnpacked.SRV);
SetSRVParameter(RHICmdList, ShaderRHI, TileArrayData, TileIntersectionResources->TileArrayData.SRV);
SetSRVParameter(RHICmdList, ShaderRHI, TileConeDepthRanges, TileIntersectionResources->TileConeDepthRanges.SRV);
SetShaderValue(RHICmdList, ShaderRHI, TileListGroupSize, TileListGroupSizeValue);
extern float GAOConeHalfAngle;
SetShaderValue(RHICmdList, ShaderRHI, TanConeHalfAngle, FMath::Tan(GAOConeHalfAngle));
FVector UnoccludedVector(0);
for (int32 SampleIndex = 0; SampleIndex < NumConeSampleDirections; SampleIndex++)
{
UnoccludedVector += SampleDirections[SampleIndex];
}
float BentNormalNormalizeFactorValue = 1.0f / (UnoccludedVector / NumConeSampleDirections).Size();
SetShaderValue(RHICmdList, ShaderRHI, BentNormalNormalizeFactor, BentNormalNormalizeFactorValue);
int32 NumOutUAVs = 0;
FUnorderedAccessViewRHIParamRef OutUAVs[1];
OutUAVs[NumOutUAVs++] = SpecularOcclusionBuffer.UAV;
RHICmdList.TransitionResources(EResourceTransitionAccess::ERWBarrier, EResourceTransitionPipeline::EComputeToCompute, OutUAVs, NumOutUAVs);
SpecularOcclusion.SetTexture(RHICmdList, ShaderRHI, SpecularOcclusionBuffer.ShaderResourceTexture, SpecularOcclusionBuffer.UAV);
}
void SetParameters(
FRHICommandList& RHICmdList,
const FViewInfo& View,
FIntPoint TileListGroupSizeValue,
FSceneRenderTargetItem& DistanceFieldNormal,
const FDistanceFieldAOParameters& Parameters,
const FGlobalDistanceFieldInfo& GlobalDistanceFieldInfo)
{
FComputeShaderRHIParamRef ShaderRHI = GetComputeShader();
FGlobalShader::SetParameters(RHICmdList, ShaderRHI, View);
DeferredParameters.Set(RHICmdList, ShaderRHI, View);
ObjectParameters.Set(RHICmdList, ShaderRHI, GAOCulledObjectBuffers.Buffers);
AOParameters.Set(RHICmdList, ShaderRHI, Parameters);
ScreenGridParameters.Set(RHICmdList, ShaderRHI, View, DistanceFieldNormal);
if (bUseGlobalDistanceField)
{
GlobalDistanceFieldParameters.Set(RHICmdList, ShaderRHI, GlobalDistanceFieldInfo.ParameterData);
}
FAOSampleData2 AOSampleData;
TArray<FVector, TInlineAllocator<9> > SampleDirections;
GetSpacedVectors(SampleDirections);
for (int32 SampleIndex = 0; SampleIndex < NumConeSampleDirections; SampleIndex++)
{
AOSampleData.SampleDirections[SampleIndex] = FVector4(SampleDirections[SampleIndex]);
}
SetUniformBufferParameterImmediate(RHICmdList, ShaderRHI, GetUniformBufferParameter<FAOSampleData2>(), AOSampleData);
FTileIntersectionResources* TileIntersectionResources = View.ViewState->AOTileIntersectionResources;
SetSRVParameter(RHICmdList, ShaderRHI, TileHeadDataUnpacked, TileIntersectionResources->TileHeadDataUnpacked.SRV);
SetSRVParameter(RHICmdList, ShaderRHI, TileArrayData, TileIntersectionResources->TileArrayData.SRV);
SetSRVParameter(RHICmdList, ShaderRHI, TileConeDepthRanges, TileIntersectionResources->TileConeDepthRanges.SRV);
SetShaderValue(RHICmdList, ShaderRHI, TileListGroupSize, TileListGroupSizeValue);
extern float GAOConeHalfAngle;
SetShaderValue(RHICmdList, ShaderRHI, TanConeHalfAngle, FMath::Tan(GAOConeHalfAngle));
FVector UnoccludedVector(0);
for (int32 SampleIndex = 0; SampleIndex < NumConeSampleDirections; SampleIndex++)
{
UnoccludedVector += SampleDirections[SampleIndex];
}
float BentNormalNormalizeFactorValue = 1.0f / (UnoccludedVector / NumConeSampleDirections).Size();
SetShaderValue(RHICmdList, ShaderRHI, BentNormalNormalizeFactor, BentNormalNormalizeFactorValue);
FAOScreenGridResources* ScreenGridResources = View.ViewState->AOScreenGridResources;
ScreenGridConeVisibility.SetBuffer(RHICmdList, ShaderRHI, ScreenGridResources->ScreenGridConeVisibility);
if (bSupportIrradiance)
{
ConeDepthVisibilityFunction.SetBuffer(RHICmdList, ShaderRHI, ScreenGridResources->ConeDepthVisibilityFunction);
}
}