static void BeginVelocityRendering(FRHICommandList& RHICmdList, TRefCountPtr<IPooledRenderTarget>& VelocityRT, bool bPerformClear)
{
FTextureRHIRef VelocityTexture = VelocityRT->GetRenderTargetItem().TargetableTexture;
FTexture2DRHIRef DepthTexture = GSceneRenderTargets.GetSceneDepthTexture();
FLinearColor VelocityClearColor = FLinearColor::Black;
if (bPerformClear)
{
// now make the FRHISetRenderTargetsInfo that encapsulates all of the info
FRHIRenderTargetView ColorView(VelocityTexture, 0, -1, ERenderTargetLoadAction::EClear, ERenderTargetStoreAction::EStore);
FRHIDepthRenderTargetView DepthView(DepthTexture, ERenderTargetLoadAction::ELoad, ERenderTargetStoreAction::ENoAction, true);
FRHISetRenderTargetsInfo Info(1, &ColorView, DepthView);
Info.ClearColors[0] = VelocityClearColor;
// Clear the velocity buffer (0.0f means "use static background velocity").
RHICmdList.SetRenderTargetsAndClear(Info);
}
else
{
SetRenderTarget(RHICmdList, VelocityTexture, DepthTexture, ESimpleRenderTargetMode::EExistingColorAndReadOnlyDepth);
// some platforms need the clear color when rendertargets transition to SRVs. We propagate here to allow parallel rendering to always
// have the proper mapping when the RT is transitioned.
RHICmdList.BindClearMRTValues(true, 1, &VelocityClearColor, false, 1.0f, false, 0);
}
}
void PrefilterPlanarReflection(FRHICommandListImmediate& RHICmdList, FViewInfo& View, const FPlanarReflectionSceneProxy* ReflectionSceneProxy, const FRenderTarget* Target)
{
FTextureRHIParamRef SceneColorInput = FSceneRenderTargets::Get(RHICmdList).GetSceneColorTexture();
if(View.FeatureLevel >= ERHIFeatureLevel::SM4)
{
// Note: null velocity buffer, so dynamic object temporal AA will not be correct
TRefCountPtr<IPooledRenderTarget> VelocityRT;
TRefCountPtr<IPooledRenderTarget> FilteredSceneColor;
GPostProcessing.ProcessPlanarReflection(RHICmdList, View, VelocityRT, FilteredSceneColor);
if (FilteredSceneColor)
{
SceneColorInput = FilteredSceneColor->GetRenderTargetItem().ShaderResourceTexture;
}
}
{
SCOPED_DRAW_EVENT(RHICmdList, PrefilterPlanarReflection);
FRHIRenderTargetView ColorView(Target->GetRenderTargetTexture(), 0, -1, ERenderTargetLoadAction::ENoAction, ERenderTargetStoreAction::EStore);
FRHISetRenderTargetsInfo Info(1, &ColorView, FRHIDepthRenderTargetView());
RHICmdList.SetRenderTargetsAndClear(Info);
RHICmdList.SetViewport(View.ViewRect.Min.X, View.ViewRect.Min.Y, 0.0f, View.ViewRect.Max.X, View.ViewRect.Max.Y, 1.0f);
RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
RHICmdList.SetRasterizerState(TStaticRasterizerState<FM_Solid, CM_None>::GetRHI());
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<TDeferredLightVS<false> > VertexShader(View.ShaderMap);
TShaderMapRef<FPrefilterPlanarReflectionPS<bEnablePlanarReflectionPrefilter> > PixelShader(View.ShaderMap);
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(RHICmdList, View.GetFeatureLevel(), BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(RHICmdList, View, ReflectionSceneProxy, SceneColorInput);
VertexShader->SetSimpleLightParameters(RHICmdList, View, FSphere(0));
DrawRectangle(
RHICmdList,
0, 0,
View.ViewRect.Width(), View.ViewRect.Height(),
View.ViewRect.Min.X, View.ViewRect.Min.Y,
View.ViewRect.Width(), View.ViewRect.Height(),
View.ViewRect.Size(),
FSceneRenderTargets::Get(RHICmdList).GetBufferSizeXY(),
*VertexShader,
EDRF_UseTriangleOptimization);
}
}
