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);
}
}
