void FRCPassPostProcessCircleDOFDilate::Process(FRenderingCompositePassContext& Context)
{
SCOPED_DRAW_EVENT(Context.RHICmdList, CircleDOFNear);
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input0);
if(!InputDesc)
{
// input is not hooked up correctly
return;
}
uint32 NumRenderTargets = 1;
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
const auto FeatureLevel = Context.GetFeatureLevel();
auto ShaderMap = Context.GetShaderMap();
FIntPoint SrcSize = InputDesc->Extent;
FIntPoint DestSize = PassOutputs[0].RenderTargetDesc.Extent;
// 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 / 2;
const FSceneRenderTargetItem& DestRenderTarget0 = PassOutputs[0].RequestSurface(Context);
const FSceneRenderTargetItem& DestRenderTarget1 = FSceneRenderTargetItem();
// Set the view family's render target/viewport.
FTextureRHIParamRef RenderTargets[2] =
{
DestRenderTarget0.TargetableTexture,
DestRenderTarget1.TargetableTexture
};
SetRenderTargets(Context.RHICmdList, NumRenderTargets, RenderTargets, FTextureRHIParamRef(), 0, NULL);
FLinearColor ClearColors[2] =
{
FLinearColor(0, 0, 0, 0),
FLinearColor(0, 0, 0, 0)
};
// is optimized away if possible (RT size=view size, )
Context.RHICmdList.ClearMRT(true, NumRenderTargets, ClearColors, false, 1.0f, false, 0, DestRect);
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());
TShaderMapRef<FPostProcessVS> VertexShader(ShaderMap);
if (false)
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessCircleDOFDilatePS<1> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
else
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessCircleDOFDilatePS<0> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
VertexShader->SetParameters(Context);
// Draw a quad mapping scene color to the view's render target
DrawRectangle(
Context.RHICmdList,
DestRect.Min.X, DestRect.Min.Y,
DestRect.Width() + 1, DestRect.Height() + 1,
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width() + 1, SrcRect.Height() + 1,
DestSize,
SrcSize,
*VertexShader,
EDRF_UseTriangleOptimization);
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget0.TargetableTexture, DestRenderTarget0.ShaderResourceTexture, false, FResolveParams());
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget1.TargetableTexture, DestRenderTarget1.ShaderResourceTexture, false, FResolveParams());
}
void FRCPassPostProcessDOFRecombine::Process(FRenderingCompositePassContext& Context)
{
SCOPED_DRAW_EVENT(Context.RHICmdList, DOFRecombine);
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input1);
if(!InputDesc)
{
// input is not hooked up correctly
return;
}
const FSceneView& View = Context.View;
const auto FeatureLevel = Context.GetFeatureLevel();
auto ShaderMap = Context.GetShaderMap();
FIntPoint TexSize = InputDesc->Extent;
// usually 1, 2, 4 or 8
uint32 ScaleToFullRes = GSceneRenderTargets.GetBufferSizeXY().X / TexSize.X;
FIntRect HalfResViewRect = View.ViewRect / ScaleToFullRes;
const FSceneRenderTargetItem& DestRenderTarget = PassOutputs[0].RequestSurface(Context);
// Set the view family's render target/viewport.
SetRenderTarget(Context.RHICmdList, DestRenderTarget.TargetableTexture, FTextureRHIRef());
// is optimized away if possible (RT size=view size, )
Context.RHICmdList.Clear(true, FLinearColor::Black, false, 1.0f, false, 0, View.ViewRect);
Context.SetViewportAndCallRHI(View.ViewRect);
// set the state
Context.RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(ShaderMap);
if (bNearBlurEnabled)
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessDOFRecombinePS<1> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
else
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessDOFRecombinePS<0> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
VertexShader->SetParameters(Context);
// Draw a quad mapping scene color to the view's render target
DrawRectangle(
Context.RHICmdList,
0, 0,
View.ViewRect.Width(), View.ViewRect.Height(),
HalfResViewRect.Min.X, HalfResViewRect.Min.Y,
HalfResViewRect.Width(), HalfResViewRect.Height(),
View.ViewRect.Size(),
TexSize,
*VertexShader,
EDRF_UseTriangleOptimization);
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
void FRCPassPostProcessDOFSetup::Process(FRenderingCompositePassContext& Context)
{
SCOPED_DRAW_EVENT(Context.RHICmdList, DOFSetup);
const FPooledRenderTargetDesc* InputDesc = GetInputDesc(ePId_Input0);
if(!InputDesc)
{
// input is not hooked up correctly
return;
}
uint32 NumRenderTargets = bNearBlurEnabled ? 2 : 1;
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
const auto FeatureLevel = Context.GetFeatureLevel();
auto ShaderMap = Context.GetShaderMap();
FIntPoint SrcSize = InputDesc->Extent;
FIntPoint DestSize = PassOutputs[0].RenderTargetDesc.Extent;
// e.g. 4 means the input texture is 4x smaller than the buffer size
uint32 ScaleFactor = FSceneRenderTargets::Get(Context.RHICmdList).GetBufferSizeXY().X / SrcSize.X;
FIntRect SrcRect = View.ViewRect / ScaleFactor;
FIntRect DestRect = SrcRect / 2;
const FSceneRenderTargetItem& DestRenderTarget0 = PassOutputs[0].RequestSurface(Context);
const FSceneRenderTargetItem& DestRenderTarget1 = bNearBlurEnabled ? PassOutputs[1].RequestSurface(Context) : FSceneRenderTargetItem();
// Set the view family's render target/viewport.
FTextureRHIParamRef RenderTargets[2] =
{
DestRenderTarget0.TargetableTexture,
DestRenderTarget1.TargetableTexture
};
SetRenderTargets(Context.RHICmdList, NumRenderTargets, RenderTargets, FTextureRHIParamRef(), 0, NULL);
FLinearColor ClearColors[2] =
{
FLinearColor(0, 0, 0, 0),
FLinearColor(0, 0, 0, 0)
};
// is optimized away if possible (RT size=view size, )
Context.RHICmdList.ClearMRT(true, NumRenderTargets, ClearColors, false, 1.0f, false, 0, DestRect);
Context.SetViewportAndCallRHI(DestRect.Min.X, DestRect.Min.Y, 0.0f, DestRect.Max.X + 1, DestRect.Max.Y + 1, 1.0f );
// set the state
Context.RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(ShaderMap);
if (bNearBlurEnabled)
{
const float DOFVignetteSize = FMath::Max(0.0f, View.FinalPostProcessSettings.DepthOfFieldVignetteSize);
// todo: test is conservative, with bad content we would waste a bit of performance
const bool bDOFVignette = DOFVignetteSize < 200.0f;
if(bDOFVignette)
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessDOFSetupPS<2> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
else
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessDOFSetupPS<1> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
}
else
{
static FGlobalBoundShaderState BoundShaderState;
TShaderMapRef< FPostProcessDOFSetupPS<0> > PixelShader(ShaderMap);
SetGlobalBoundShaderState(Context.RHICmdList, FeatureLevel, BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetParameters(Context);
}
VertexShader->SetParameters(Context);
DrawPostProcessPass(
Context.RHICmdList,
0, 0,
DestRect.Width() + 1, DestRect.Height() + 1,
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width() + 1, SrcRect.Height() + 1,
DestRect.Size() + FIntPoint(1, 1),
SrcSize,
*VertexShader,
View.StereoPass,
Context.HasHmdMesh(),
EDRF_UseTriangleOptimization);
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget0.TargetableTexture, DestRenderTarget0.ShaderResourceTexture, false, FResolveParams());
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget1.TargetableTexture, DestRenderTarget1.ShaderResourceTexture, false, FResolveParams());
}
void FRCPassPostProcessTestImage::Process(FRenderingCompositePassContext& Context)
{
SCOPED_DRAW_EVENT(Context.RHICmdList, TestImage);
const FSceneView& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntRect SrcRect = View.ViewRect;
FIntRect DestRect = View.ViewRect;
const FSceneRenderTargetItem& DestRenderTarget = PassOutputs[0].RequestSurface(Context);
// Set the view family's render target/viewport.
SetRenderTarget(Context.RHICmdList, DestRenderTarget.TargetableTexture, FTextureRHIRef());
Context.SetViewportAndCallRHI(DestRect);
// set the state
Context.RHICmdList.SetBlendState(TStaticBlendState<>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(Context.GetShaderMap());
TShaderMapRef<FPostProcessTestImagePS> PixelShader(Context.GetShaderMap());
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(Context.RHICmdList, Context.GetFeatureLevel(), BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetPS(Context);
// Draw a quad mapping scene color to the view's render target
DrawRectangle(
Context.RHICmdList,
0, 0,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestRect.Size(),
FSceneRenderTargets::Get(Context.RHICmdList).GetBufferSizeXY(),
*VertexShader,
EDRF_UseTriangleOptimization);
{
// this is a helper class for FCanvas to be able to get screen size
class FRenderTargetTemp : public FRenderTarget
{
public:
const FSceneView& View;
const FTexture2DRHIRef Texture;
FRenderTargetTemp(const FSceneView& InView, const FTexture2DRHIRef InTexture)
: View(InView), Texture(InTexture)
{
}
virtual FIntPoint GetSizeXY() const
{
return View.ViewRect.Size();
};
virtual const FTexture2DRHIRef& GetRenderTargetTexture() const
{
return Texture;
}
} TempRenderTarget(View, (const FTexture2DRHIRef&)DestRenderTarget.TargetableTexture);
FCanvas Canvas(&TempRenderTarget, NULL, ViewFamily.CurrentRealTime, ViewFamily.CurrentWorldTime, ViewFamily.DeltaWorldTime, Context.GetFeatureLevel());
float X = 30;
float Y = 8;
const float YStep = 14;
const float ColumnWidth = 250;
FString Line;
Line = FString::Printf(TEXT("Top bars:"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Moving bars using FrameTime"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Black and white raster, Pixel sized, Watch for Moire pattern"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Black and white raster, 2x2 block sized"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT("Bottom bars:"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" 8 bars near white, 4 right bars should appear as one (HDTV)"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" 8 bars near black, 4 left bars should appear as one (HDTV)"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Linear Greyscale in sRGB from 0 to 255"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT("Color bars:"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Red, Green, Blue"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT("Outside:"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Moving bars using FrameNumber, Tearing without VSync"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT("Circles:"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" Should be round and centered"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT("Border:"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Line = FString::Printf(TEXT(" 4 white pixel sized lines (only visible without overscan)"));
Canvas.DrawShadowedString( X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Canvas.Flush_RenderThread(Context.RHICmdList);
}
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
void FRCPassPostProcessSubsurfaceVisualize::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;
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(Context.RHICmdList);
// e.g. 4 means the input texture is 4x smaller than the buffer size
uint32 ScaleFactor = SceneContext.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.
SetRenderTarget(Context.RHICmdList, DestRenderTarget.TargetableTexture, FTextureRHIRef());
// is optimized away if possible (RT size=view size, )
Context.RHICmdList.Clear(true, FLinearColor::Black, false, 1.0f, false, 0, DestRect);
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());
SetSubsurfaceVisualizeShader(Context);
// Draw a quad mapping scene color to the view's render target
TShaderMapRef<FPostProcessVS> VertexShader(Context.GetShaderMap());
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);
{
// this is a helper class for FCanvas to be able to get screen size
class FRenderTargetTemp : public FRenderTarget
{
public:
const FSceneView& View;
const FTexture2DRHIRef Texture;
FRenderTargetTemp(const FSceneView& InView, const FTexture2DRHIRef InTexture)
: View(InView), Texture(InTexture)
{
}
virtual FIntPoint GetSizeXY() const
{
return View.ViewRect.Size();
};
virtual const FTexture2DRHIRef& GetRenderTargetTexture() const
{
return Texture;
}
} TempRenderTarget(View, (const FTexture2DRHIRef&)DestRenderTarget.TargetableTexture);
FCanvas Canvas(&TempRenderTarget, NULL, ViewFamily.CurrentRealTime, ViewFamily.CurrentWorldTime, ViewFamily.DeltaWorldTime, Context.GetFeatureLevel());
float X = 30;
float Y = 28;
const float YStep = 14;
FString Line;
Line = FString::Printf(TEXT("Visualize Screen Space Subsurface Scattering"));
Canvas.DrawShadowedString(X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
Y += YStep;
uint32 Index = 0;
while (GSubsurfaceProfileTextureObject.GetEntryString(Index++, Line))
{
Canvas.DrawShadowedString(X, Y += YStep, *Line, GetStatsFont(), FLinearColor(1, 1, 1));
}
Canvas.Flush_RenderThread(Context.RHICmdList);
}
Context.RHICmdList.CopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
// we no longer need the GBuffer
SceneContext.AdjustGBufferRefCount(-1);
}
void FRCPassPostProcessDeferredDecals::Process(FRenderingCompositePassContext& Context)
{
FRHICommandListImmediate& RHICmdList = Context.RHICmdList;
const bool bShaderComplexity = Context.View.Family->EngineShowFlags.ShaderComplexity;
const bool bDBuffer = IsDBufferEnabled();
const bool bStencilSizeThreshold = CVarStencilSizeThreshold.GetValueOnRenderThread() >= 0;
SCOPED_DRAW_EVENT(RHICmdList, PostProcessDeferredDecals);
if(RenderStage == 0)
{
// before BasePass, only if DBuffer is enabled
check(bDBuffer);
// DBuffer: Decal buffer
FPooledRenderTargetDesc Desc(FPooledRenderTargetDesc::Create2DDesc(GSceneRenderTargets.GBufferA->GetDesc().Extent,
PF_B8G8R8A8,
TexCreate_None,
TexCreate_ShaderResource | TexCreate_RenderTargetable,
false));
if(!GSceneRenderTargets.DBufferA)
{
GRenderTargetPool.FindFreeElement(Desc, GSceneRenderTargets.DBufferA, TEXT("DBufferA"));
}
if(!GSceneRenderTargets.DBufferB)
{
GRenderTargetPool.FindFreeElement(Desc, GSceneRenderTargets.DBufferB, TEXT("DBufferB"));
}
Desc.Format = PF_R8G8;
if(!GSceneRenderTargets.DBufferC)
{
GRenderTargetPool.FindFreeElement(Desc, GSceneRenderTargets.DBufferC, TEXT("DBufferC"));
}
// we assume views are non overlapping, then we need to clear only once in the beginning, otherwise we would need to set scissor rects
// and don't get FastClear any more.
bool bFirstView = Context.View.Family->Views[0] == &Context.View;
if(bFirstView)
{
SCOPED_DRAW_EVENT(RHICmdList, DBufferClear);
// could be optimized
SetRenderTarget(RHICmdList, GSceneRenderTargets.DBufferA->GetRenderTargetItem().TargetableTexture, FTextureRHIParamRef());
RHICmdList.Clear(true, FLinearColor(0, 0, 0, 1), false, (float)ERHIZBuffer::FarPlane, false, 0, FIntRect());
SetRenderTarget(RHICmdList, GSceneRenderTargets.DBufferB->GetRenderTargetItem().TargetableTexture, FTextureRHIParamRef());
// todo: some hardware would like to have 0 or 1 for faster clear, we chose 128/255 to represent 0 (8 bit cannot represent 0.5f)
RHICmdList.Clear(true, FLinearColor(128.0f / 255.0f, 128.0f / 255.0f, 128.0f / 255.0f, 1), false, (float)ERHIZBuffer::FarPlane, false, 0, FIntRect());
SetRenderTarget(RHICmdList, GSceneRenderTargets.DBufferC->GetRenderTargetItem().TargetableTexture, FTextureRHIParamRef());
// R:roughness, G:roughness opacity
RHICmdList.Clear(true, FLinearColor(0, 1, 0, 1), false, (float)ERHIZBuffer::FarPlane, false, 0, FIntRect());
}
}
// this cast is safe as only the dedicated server implements this differently and this pass should not be executed on the dedicated server
const FViewInfo& View = Context.View;
const FSceneViewFamily& ViewFamily = *(View.Family);
FScene& Scene = *(FScene*)ViewFamily.Scene;
if(!Scene.Decals.Num())
{
// to avoid the stats showing up
return;
}
TArray<FTransientDecalRenderData, SceneRenderingAllocator> SortedDecals;
SortedDecals.Empty(Scene.Decals.Num());
// Build a list of decals that need to be rendered for this view in SortedDecals
for (TSparseArray<FDeferredDecalProxy*>::TConstIterator It(Scene.Decals); It; ++It)
{
FDeferredDecalProxy* DecalProxy = *It;
bool bIsShown = true;
// Handle the decal actor having bHidden set when we are in the editor, in G mode
#if WITH_EDITOR
if (View.Family->EngineShowFlags.Editor)
#endif
{
if (!DecalProxy->DrawInGame)
{
bIsShown = false;
}
}
const FMatrix ComponentToWorldMatrix = DecalProxy->ComponentTrans.ToMatrixWithScale();
// can be optimized as we test against a sphere around the box instead of the box itself
const float ConservativeRadius = FMath::Sqrt(
ComponentToWorldMatrix.GetScaledAxis( EAxis::X ).SizeSquared() * FMath::Square(GDefaultDecalSize.X) +
ComponentToWorldMatrix.GetScaledAxis( EAxis::Y ).SizeSquared() * FMath::Square(GDefaultDecalSize.Y) +
ComponentToWorldMatrix.GetScaledAxis( EAxis::Z ).SizeSquared() * FMath::Square(GDefaultDecalSize.Z));
// can be optimized as the test is too conservative (sphere instead of OBB)
if(ConservativeRadius < SMALL_NUMBER || !View.ViewFrustum.IntersectSphere(ComponentToWorldMatrix.GetOrigin(), ConservativeRadius))
{
bIsShown = false;
}
if (bIsShown)
{
FTransientDecalRenderData Data(Scene, DecalProxy);
uint32 DecalRenderStage = ComputeRenderStage(Data.DecalBlendMode);
// we could do this test earlier to avoid the decal intersection but getting DecalBlendMode also costs
if (Context.View.Family->EngineShowFlags.ShaderComplexity || RenderStage == DecalRenderStage)
{
SortedDecals.Add(Data);
}
}
}
if(SortedDecals.Num() > 0)
{
FIntRect SrcRect = View.ViewRect;
FIntRect DestRect = View.ViewRect;
bool bStencilDecals = true;
#if DBUFFER_DONT_USE_STENCIL_YET
if(RenderStage == 0)
{
bStencilDecals = false;
}
#endif
// Setup a stencil mask to prevent certain pixels from receiving deferred decals
if(bStencilDecals)
{
StencilDecalMask(RHICmdList, View);
}
// Sort by sort order to allow control over composited result
// Then sort decals by state to reduce render target switches
// Also sort by component since Sort() is not stable
struct FCompareFTransientDecalRenderData
{
FORCEINLINE bool operator()( const FTransientDecalRenderData& A, const FTransientDecalRenderData& B ) const
{
if (B.DecalProxy->SortOrder != A.DecalProxy->SortOrder)
{
return A.DecalProxy->SortOrder < B.DecalProxy->SortOrder;
}
if (B.DecalBlendMode != A.DecalBlendMode)
{
return (int32)B.DecalBlendMode < (int32)A.DecalBlendMode;
}
if (B.bHasNormal != A.bHasNormal)
{
return B.bHasNormal < A.bHasNormal;
}
// Batch decals with the same material together
if (B.MaterialProxy != A.MaterialProxy )
{
return B.MaterialProxy < A.MaterialProxy;
}
return (PTRINT)B.DecalProxy->Component < (PTRINT)A.DecalProxy->Component;
}
};
// Sort decals by blend mode to reduce render target switches
SortedDecals.Sort( FCompareFTransientDecalRenderData() );
// optimization to have less state changes
int32 LastDecalBlendMode = -1;
int32 LastDecalHasNormal = -1; // Decal state can change based on its normal property.(SM5)
ERenderTargetMode LastRenderTargetMode = RTM_Unknown;
int32 WasInsideDecal = -1;
const ERHIFeatureLevel::Type SMFeatureLevel = Context.GetFeatureLevel();
SCOPED_DRAW_EVENT(RHICmdList, Decals);
INC_DWORD_STAT_BY(STAT_Decals, SortedDecals.Num());
enum EDecalResolveBufferIndex
{
SceneColorIndex,
GBufferAIndex,
GBufferBIndex,
GBufferCIndex,
DBufferAIndex,
DBufferBIndex,
DBufferCIndex,
ResolveBufferMax,
};
FTextureRHIParamRef TargetsToResolve[ResolveBufferMax] = { nullptr };
for (int32 DecalIndex = 0, DecalCount = SortedDecals.Num(); DecalIndex < DecalCount; DecalIndex++)
{
const FTransientDecalRenderData& DecalData = SortedDecals[DecalIndex];
const FDeferredDecalProxy& DecalProxy = *DecalData.DecalProxy;
const FMatrix ComponentToWorldMatrix = DecalProxy.ComponentTrans.ToMatrixWithScale();
// Set vertex shader params
const FMaterialShaderMap* MaterialShaderMap = DecalData.MaterialResource->GetRenderingThreadShaderMap();
FScaleMatrix DecalScaleTransform(GDefaultDecalSize);
FTranslationMatrix PreViewTranslation(View.ViewMatrices.PreViewTranslation);
FMatrix FrustumComponentToClip = DecalScaleTransform * ComponentToWorldMatrix * PreViewTranslation * View.ViewMatrices.TranslatedViewProjectionMatrix;
// can be optimized as we test against a sphere around the box instead of the box itself
const float ConservativeRadius = FMath::Sqrt(
ComponentToWorldMatrix.GetScaledAxis( EAxis::X ).SizeSquared() * FMath::Square(GDefaultDecalSize.X) +
ComponentToWorldMatrix.GetScaledAxis( EAxis::Y ).SizeSquared() * FMath::Square(GDefaultDecalSize.Y) +
ComponentToWorldMatrix.GetScaledAxis( EAxis::Z ).SizeSquared() * FMath::Square(GDefaultDecalSize.Z));
EDecalBlendMode DecalBlendMode = DecalData.DecalBlendMode;
bool bStencilThisDecal = bStencilDecals;
#if DBUFFER_DONT_USE_STENCIL_YET
if(ComputeRenderStage(DecalBlendMode) == 0)
{
bStencilThisDecal = false;
}
#endif
ERenderTargetMode CurrentRenderTargetMode = ComputeRenderTargetMode(DecalBlendMode);
if(bShaderComplexity)
{
CurrentRenderTargetMode = RTM_SceneColor;
// we want additive blending for the ShaderComplexity mode
DecalBlendMode = DBM_Emissive;
}
// fewer rendertarget switches if possible
if(CurrentRenderTargetMode != LastRenderTargetMode)
{
LastRenderTargetMode = CurrentRenderTargetMode;
switch(CurrentRenderTargetMode)
{
case RTM_SceneColorAndGBuffer:
{
TargetsToResolve[SceneColorIndex] = GSceneRenderTargets.GetSceneColor()->GetRenderTargetItem().TargetableTexture;
TargetsToResolve[GBufferAIndex] = GSceneRenderTargets.GBufferA->GetRenderTargetItem().TargetableTexture;
TargetsToResolve[GBufferBIndex] = GSceneRenderTargets.GBufferB->GetRenderTargetItem().TargetableTexture;
TargetsToResolve[GBufferCIndex] = GSceneRenderTargets.GBufferC->GetRenderTargetItem().TargetableTexture;
SetRenderTargets(RHICmdList, 4, TargetsToResolve, GSceneRenderTargets.GetSceneDepthSurface(), ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilWrite);
}
break;
case RTM_GBufferNormal:
TargetsToResolve[GBufferAIndex] = GSceneRenderTargets.GBufferA->GetRenderTargetItem().TargetableTexture;
SetRenderTarget(RHICmdList, TargetsToResolve[GBufferAIndex], GSceneRenderTargets.GetSceneDepthSurface(), ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilWrite);
break;
case RTM_SceneColor:
TargetsToResolve[SceneColorIndex] = GSceneRenderTargets.GetSceneColor()->GetRenderTargetItem().TargetableTexture;
SetRenderTarget(RHICmdList, TargetsToResolve[SceneColorIndex], GSceneRenderTargets.GetSceneDepthSurface(), ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilWrite);
break;
case RTM_DBuffer:
{
TargetsToResolve[DBufferAIndex] = GSceneRenderTargets.DBufferA->GetRenderTargetItem().TargetableTexture;
TargetsToResolve[DBufferBIndex] = GSceneRenderTargets.DBufferB->GetRenderTargetItem().TargetableTexture;
TargetsToResolve[DBufferCIndex] = GSceneRenderTargets.DBufferC->GetRenderTargetItem().TargetableTexture;
SetRenderTargets(RHICmdList, 3, &TargetsToResolve[DBufferAIndex], GSceneRenderTargets.GetSceneDepthSurface(), ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilWrite);
}
break;
default:
check(0);
break;
}
Context.SetViewportAndCallRHI(DestRect);
// we need to reset the stream source after any call to SetRenderTarget (at least for Metal, which doesn't queue up VB assignments)
RHICmdList.SetStreamSource(0, GUnitCubeVertexBuffer.VertexBufferRHI, sizeof(FVector4), 0);
}
bool bThisDecalUsesStencil = false;
if (bStencilThisDecal)
{
if (bStencilSizeThreshold)
{
// note this is after a SetStreamSource (in if CurrentRenderTargetMode != LastRenderTargetMode) call as it needs to get the VB input
bThisDecalUsesStencil = RenderPreStencil(Context, MaterialShaderMap, ComponentToWorldMatrix, FrustumComponentToClip);
WasInsideDecal = -1;
LastDecalBlendMode = -1;
}
}
const bool bBlendStateChange = DecalBlendMode != LastDecalBlendMode;// Has decal mode changed.
const bool bDecalNormalChanged = GSupportsSeparateRenderTargetBlendState && // has normal changed for SM5 stain/translucent decals?
(DecalBlendMode == DBM_Translucent || DecalBlendMode == DBM_Stain) &&
(int32)DecalData.bHasNormal != LastDecalHasNormal;
// fewer blend state changes if possible
if (bBlendStateChange || bDecalNormalChanged)
{
LastDecalBlendMode = DecalBlendMode;
LastDecalHasNormal = (int32)DecalData.bHasNormal;
SetDecalBlendState(RHICmdList, SMFeatureLevel, RenderStage, (EDecalBlendMode)LastDecalBlendMode, DecalData.bHasNormal);
}
{
TShaderMapRef<FDeferredDecalVS> VertexShader(Context.GetShaderMap());
SetShader(Context, bShaderComplexity, DecalData, *VertexShader);
VertexShader->SetParameters(RHICmdList, View, FrustumComponentToClip);
const int32 IsInsideDecal = ((FVector)View.ViewMatrices.ViewOrigin - ComponentToWorldMatrix.GetOrigin()).SizeSquared() < FMath::Square(ConservativeRadius * 1.05f + View.NearClippingDistance * 2.0f) + ( bThisDecalUsesStencil ) ? 2 : 0;
if ( WasInsideDecal != IsInsideDecal )
{
WasInsideDecal = IsInsideDecal;
if ( !(IsInsideDecal & 1) )
{
// Render backfaces with depth tests disabled since the camera is inside (or close to inside) the light function geometry
RHICmdList.SetRasterizerState(View.bReverseCulling ? TStaticRasterizerState<FM_Solid, CM_CCW>::GetRHI() : TStaticRasterizerState<FM_Solid, CM_CW>::GetRHI());
if(bStencilDecals)
{
// Enable stencil testing, only write to pixels with stencil of 0
if ( bThisDecalUsesStencil )
{
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<
false,CF_Always,
true,CF_Equal,SO_Zero,SO_Zero,SO_Zero,
true,CF_Equal,SO_Zero,SO_Zero,SO_Zero,
0xff, 0x7f
>::GetRHI(), 1);
}
else
{
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<
false,CF_Always,
true,CF_Equal,SO_Keep,SO_Keep,SO_Keep,
false,CF_Always,SO_Keep,SO_Keep,SO_Keep,
0x80,0x00>::GetRHI(), 0);
}
}
else
{
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always, true>::GetRHI(), 0);
}
}
else
{
// Render frontfaces with depth tests on to get the speedup from HiZ since the camera is outside the light function geometry
if(bStencilDecals)
{
// Render frontfaces with depth tests on to get the speedup from HiZ since the camera is outside the light function geometry
// Enable stencil testing, only write to pixels with stencil of 0
if ( bThisDecalUsesStencil )
{
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<
false,CF_DepthNearOrEqual,
true,CF_Equal,SO_Zero,SO_Zero,SO_Zero,
true,CF_Equal,SO_Zero,SO_Zero,SO_Zero,
0xff, 0x7f
>::GetRHI(), 1);
}
else
{
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<
false,CF_DepthNearOrEqual,
true,CF_Equal,SO_Keep,SO_Keep,SO_Keep,
false,CF_Always,SO_Keep,SO_Keep,SO_Keep,
0x80,0x00>::GetRHI(), 0);
}
RHICmdList.SetRasterizerState(View.bReverseCulling ? TStaticRasterizerState<FM_Solid, CM_CW>::GetRHI() : TStaticRasterizerState<FM_Solid, CM_CCW>::GetRHI());
}
else
{
RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false, CF_DepthNearOrEqual>::GetRHI(), 0);
}
RHICmdList.SetRasterizerState(View.bReverseCulling ? TStaticRasterizerState<FM_Solid, CM_CW>::GetRHI() : TStaticRasterizerState<FM_Solid, CM_CCW>::GetRHI());
}
}
RHICmdList.DrawIndexedPrimitive(GUnitCubeIndexBuffer.IndexBufferRHI, PT_TriangleList, 0, 0, 8, 0, GUnitCubeIndexBuffer.GetIndexCount() / 3, 1);
}
}
// we don't modify stencil but if out input was having stencil for us (after base pass - we need to clear)
// Clear stencil to 0, which is the assumed default by other passes
RHICmdList.Clear(false, FLinearColor::White, false, (float)ERHIZBuffer::FarPlane, true, 0, FIntRect());
// resolve the targets we wrote to.
FResolveParams ResolveParams;
for (int32 i = 0; i < ResolveBufferMax; ++i)
{
if (TargetsToResolve[i])
{
RHICmdList.CopyToResolveTarget(TargetsToResolve[i], TargetsToResolve[i], true, ResolveParams);
}
}
}
if(RenderStage == 0)
{
// before BasePass
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, GSceneRenderTargets.DBufferA);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, GSceneRenderTargets.DBufferB);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, GSceneRenderTargets.DBufferC);
}
}
