void FRCPassPostProcessSubsurface::Process(FRenderingCompositePassContext& Context)
{
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input0);
if(!InputDesc)
{
// input is not hooked up correctly
return;
}
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint SrcSize = InputDesc->Extent;
FIntPoint DestSize = SrcSize;
// e.g. 4 means the input texture is 4x smaller than the buffer size
uint32 ScaleFactor = GSceneRenderTargets.GetBufferSizeXY().X / SrcSize.X;
FIntRect SrcRect = View.ViewRect / ScaleFactor;
FIntRect DestRect = SrcRect;
const FSceneRenderTargetItem& DestRenderTarget = PassOutputs[0].RequestSurface(Context);
// Set the view family's render target/viewport.
RHISetRenderTarget(DestRenderTarget.TargetableTexture, FTextureRHIRef());
// is optimized away if possible (RT size=view size, )
RHIClear(true, FLinearColor(0, 0, 0, 0), false, 1.0f, false, 0, DestRect);
Context.SetViewportAndCallRHI(0, 0, 0.0f, DestSize.X, DestSize.Y, 1.0f );
// set the state
RHISetBlendState(TStaticBlendState<>::GetRHI());
RHISetRasterizerState(TStaticRasterizerState<>::GetRHI());
RHISetDepthStencilState(TStaticDepthStencilState<false,CF_Always>::GetRHI());
if(Pass == 0)
{
SCOPED_DRAW_EVENT(SubsurfacePass0, DEC_SCENE_ITEMS);
SetSubsurfaceShader<0>(Context, Radius);
// Draw a quad mapping scene color to the view's render target
DrawRectangle(
DestRect.Min.X, DestRect.Min.Y,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestSize,
SrcSize,
EDRF_UseTriangleOptimization);
RHICopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
if(Pass == 1)
{
SCOPED_DRAW_EVENT(SubsurfacePass1, DEC_SCENE_ITEMS);
if(DoSpecularCorrection())
{
// reconstruct specular and add it in final pass
SetSubsurfaceShader<2>(Context, Radius);
}
else
{
SetSubsurfaceShader<1>(Context, Radius);
}
// Draw a quad mapping scene color to the view's render target
DrawRectangle(
DestRect.Min.X, DestRect.Min.Y,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestSize,
SrcSize,
EDRF_UseTriangleOptimization);
RHICopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
}
void FRCPassPostProcessSubsurfaceExtractSpecular::Process(FRenderingCompositePassContext& Context)
{
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input0);
check(InputDesc);
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint SrcSize = InputDesc->Extent;
FIntPoint DestSize = PassOutputs[0].RenderTargetDesc.Extent;
check(DestSize.X);
check(DestSize.Y);
check(SrcSize.X);
check(SrcSize.Y);
// FIntRect SrcRect = View.ViewRect / ScaleFactor;
FIntRect SrcRect = View.ViewRect;
FIntRect DestRect = View.ViewRect;
TRefCountPtr<IPooledRenderTarget> NewSceneColor;
const FSceneRenderTargetItem& DestRenderTarget = PassOutputs[0].RequestSurface(Context);
// Set the view family's render target/viewport.
SetRenderTarget(Context.RHICmdList, DestRenderTarget.TargetableTexture, FTextureRHIRef());
Context.SetViewportAndCallRHI(0, 0, 0.0f, DestSize.X, DestSize.Y, 1.0f );
Context.RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(Context.GetShaderMap());
bool bDoSpecularCorrection = DoSpecularCorrection();
SCOPED_DRAW_EVENTF(Context.RHICmdList, SubsurfacePass, TEXT("SubsurfacePassExtractSpecular#%d"), (int32)bDoSpecularCorrection);
uint32 SampleSet = FMath::Clamp(CVarSSSSampleSet.GetValueOnRenderThread(), 0, 2);
if(bDoSpecularCorrection)
{
SetSubsurfaceExtractSpecular<1>(Context, SampleSet);
}
else
{
SetSubsurfaceExtractSpecular<0>(Context, SampleSet);
}
DrawRectangle(
Context.RHICmdList,
DestRect.Min.X, DestRect.Min.Y,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestSize,
SrcSize,
*VertexShader,
EDRF_UseTriangleOptimization);
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
void FRCPassPostProcessSubsurfaceSetup::Process(FRenderingCompositePassContext& Context)
{
SCOPED_DRAW_EVENT(Context.RHICmdList, SubsurfaceSetup);
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input0);
if(!InputDesc)
{
// input is not hooked up correctly
return;
}
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint SrcSize = InputDesc->Extent;
FIntPoint DestSize = PassOutputs[0].RenderTargetDesc.Extent;
FIntRect DestRect = FIntRect(0, 0, DestSize.X, DestSize.Y);
// upscale rectangle to not slightly scale (might miss a pixel)
FIntRect SrcRect = DestRect * 2 + View.ViewRect.Min;
const FSceneRenderTargetItem& DestRenderTarget = PassOutputs[0].RequestSurface(Context);
// Set the view family's render target/viewport.
SetRenderTarget(Context.RHICmdList, DestRenderTarget.TargetableTexture, FTextureRHIRef());
Context.SetViewportAndCallRHI(0, 0, 0.0f, DestSize.X, DestSize.Y, 1.0f );
// set the state
Context.RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
// reconstruct specular and add it in final pass
bool bSpecularCorrection = DoSpecularCorrection();
if(bSpecularCorrection)
{
SetSubsurfaceSetupShader<1>(Context);
}
else
{
SetSubsurfaceSetupShader<0>(Context);
}
// Draw a quad mapping scene color to the view's render target
TShaderMapRef<FPostProcessVS> VertexShader(Context.GetShaderMap());
DrawPostProcessPass(
Context.RHICmdList,
DestRect.Min.X, DestRect.Min.Y,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestSize,
SrcSize,
*VertexShader,
View.StereoPass,
Context.HasHmdMesh(),
EDRF_UseTriangleOptimization);
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
void FRCPassPostProcessSubsurfaceRecombine::Process(FRenderingCompositePassContext& Context)
{
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(Context.RHICmdList);
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input0);
check(InputDesc);
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntPoint SrcSize = InputDesc->Extent;
FIntPoint DestSize = SceneContext.GetBufferSizeXY();
check(DestSize.X);
check(DestSize.Y);
check(SrcSize.X);
check(SrcSize.Y);
FIntRect SrcRect = FIntRect(0, 0, InputDesc->Extent.X, InputDesc->Extent.Y);
FIntRect DestRect = View.ViewRect;
TRefCountPtr<IPooledRenderTarget>& SceneColor = SceneContext.GetSceneColor();
const FSceneRenderTargetItem& DestRenderTarget = SceneColor->GetRenderTargetItem();
// Set the view family's render target/viewport.
SetRenderTarget(Context.RHICmdList, DestRenderTarget.TargetableTexture, FTextureRHIRef());
Context.SetViewportAndCallRHI(0, 0, 0.0f, DestSize.X, DestSize.Y, 1.0f );
Context.RHICmdList.SetBlendState(TStaticBlendState<CW_RGBA,BO_Add,BF_SourceAlpha,BF_InverseSourceAlpha,BO_Add,BF_SourceAlpha,BF_InverseSourceAlpha>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(Context.GetShaderMap());
bool bDoSpecularCorrection = DoSpecularCorrection();
SCOPED_DRAW_EVENTF(Context.RHICmdList, SubsurfacePass, TEXT("SubsurfacePassRecombine#%d"), (int32)bDoSpecularCorrection);
if(bDoSpecularCorrection)
{
SetSubsurfaceRecombineShader<1>(Context, VertexShader);
}
else
{
SetSubsurfaceRecombineShader<0>(Context, VertexShader);
}
DrawPostProcessPass(
Context.RHICmdList,
DestRect.Min.X, DestRect.Min.Y,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestSize,
SrcSize,
*VertexShader,
View.StereoPass,
Context.HasHmdMesh(),
EDRF_UseTriangleOptimization);
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
