void FinishOcclusionTerm(FRHICommandList& RHICmdList, const FViewInfo& View, const FLightSceneInfo* const LightSceneInfo, TRefCountPtr<IPooledRenderTarget>& LightShaftsSource, TRefCountPtr<IPooledRenderTarget>& LightShaftsDest)
{
TShaderMapRef<FScreenVS> ScreenVertexShader(View.ShaderMap);
const FIntPoint BufferSize = FSceneRenderTargets::Get(RHICmdList).GetBufferSizeXY();
const uint32 DownsampleFactor = GetLightShaftDownsampleFactor();
const FIntPoint FilterBufferSize = BufferSize / DownsampleFactor;
const FIntPoint DownSampledXY = View.ViewRect.Min / DownsampleFactor;
const uint32 DownsampledSizeX = View.ViewRect.Width() / DownsampleFactor;
const uint32 DownsampledSizeY = View.ViewRect.Height() / DownsampleFactor;
SetRenderTarget(RHICmdList, LightShaftsDest->GetRenderTargetItem().TargetableTexture, FTextureRHIRef());
RHICmdList.SetViewport(0, 0, 0.0f, FilterBufferSize.X, FilterBufferSize.Y, 1.0f);
RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<FFinishOcclusionPixelShader> MaskOcclusionTermPixelShader(View.ShaderMap);
SetGlobalBoundShaderState(RHICmdList, View.GetFeatureLevel(), AccumulateTermBoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *ScreenVertexShader, *MaskOcclusionTermPixelShader);
/// ?
MaskOcclusionTermPixelShader->SetParameters(RHICmdList, LightSceneInfo, View, LightShaftsSource);
{
// Apply a radial blur to the bloom and occlusion mask
DrawRectangle(
RHICmdList,
DownSampledXY.X, DownSampledXY.Y,
DownsampledSizeX, DownsampledSizeY,
DownSampledXY.X, DownSampledXY.Y,
DownsampledSizeX, DownsampledSizeY,
FilterBufferSize, FilterBufferSize,
*ScreenVertexShader,
EDRF_UseTriangleOptimization);
}
RHICmdList.CopyToResolveTarget(LightShaftsDest->GetRenderTargetItem().TargetableTexture, LightShaftsDest->GetRenderTargetItem().ShaderResourceTexture, false, FResolveParams());
}
