void FRCPassPostProcessVisualizeBuffer::AddVisualizationBuffer(FRenderingCompositeOutputRef InSource, const FString& InName)
{
Tiles.Add(TileData(InSource, InName));
if (InSource.IsValid())
{
AddDependency(InSource);
}
}
void FRCPassPostProcessVisualizeBuffer::Process(FRenderingCompositePassContext& Context)
{
SCOPED_DRAW_EVENT(VisualizeBuffer, DEC_SCENE_ITEMS);
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);
FIntRect SrcRect = View.ViewRect;
FIntRect DestRect = View.ViewRect;
FIntPoint SrcSize = InputDesc->Extent;
const FSceneRenderTargetItem& DestRenderTarget = PassOutputs[0].RequestSurface(Context);
// Set the view family's render target/viewport.
RHISetRenderTarget(DestRenderTarget.TargetableTexture, FTextureRHIRef());
Context.SetViewportAndCallRHI(DestRect);
// set the state
RHISetBlendState(TStaticBlendState<>::GetRHI());
RHISetRasterizerState(TStaticRasterizerState<>::GetRHI());
RHISetDepthStencilState(TStaticDepthStencilState<false,CF_Always>::GetRHI());
SetShaderTempl<false>(Context);
// Draw a quad mapping scene color to the view's render target
DrawRectangle(
0, 0,
DestRect.Width(), DestRect.Height(),
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestRect.Size(),
SrcSize,
EDRF_UseTriangleOptimization);
// Now draw the requested tiles into the grid
TShaderMapRef<FPostProcessVS> VertexShader(GetGlobalShaderMap());
TShaderMapRef<FPostProcessVisualizeBufferPS<true> > PixelShader(GetGlobalShaderMap());
RHISetBlendState(TStaticBlendState<CW_RGB, BO_Add, BF_SourceAlpha, BF_InverseSourceAlpha>::GetRHI());
static FGlobalBoundShaderState BoundShaderState;
SetGlobalBoundShaderState(BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
PixelShader->SetPS(Context);
// Track the name and position of each tile we draw so we can write text labels over them
struct LabelRecord
{
FString Label;
int32 LocationX;
int32 LocationY;
};
TArray<LabelRecord> Labels;
const int32 MaxTilesX = 4;
const int32 MaxTilesY = 4;
const int32 TileWidth = DestRect.Width() / MaxTilesX;
const int32 TileHeight = DestRect.Height() / MaxTilesY;
int32 CurrentTileIndex = 0;
for (TArray<TileData>::TConstIterator It = Tiles.CreateConstIterator(); It; ++It, ++CurrentTileIndex)
{
FRenderingCompositeOutputRef Tile = It->Source;
if (Tile.IsValid())
{
FTextureRHIRef Texture = Tile.GetOutput()->PooledRenderTarget->GetRenderTargetItem().TargetableTexture;
int32 TileX = CurrentTileIndex % MaxTilesX;
int32 TileY = CurrentTileIndex / MaxTilesX;
PixelShader->SetSourceTexture(Texture);
DrawRectangle(
TileX * TileWidth, TileY * TileHeight,
TileWidth, TileHeight,
SrcRect.Min.X, SrcRect.Min.Y,
SrcRect.Width(), SrcRect.Height(),
DestRect.Size(),
SrcSize,
EDRF_Default);
Labels.Add(LabelRecord());
Labels.Last().Label = It->Name;
Labels.Last().LocationX = 8 + TileX * TileWidth;
Labels.Last().LocationY = (TileY + 1) * TileHeight - 19;
}
}
// Draw tile labels
// 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);
FLinearColor LabelColor(1, 1, 0);
for (auto It = Labels.CreateConstIterator(); It; ++It)
{
Canvas.DrawShadowedString(It->LocationX, It->LocationY, *It->Label, GetStatsFont(), LabelColor);
}
Canvas.Flush();
RHICopyToResolveTarget(DestRenderTarget.TargetableTexture, DestRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
void SetPS(const FRenderingCompositePassContext& Context)
{
const FPixelShaderRHIParamRef ShaderRHI = GetPixelShader();
FGlobalShader::SetParameters(Context.RHICmdList, ShaderRHI, Context.View);
DeferredParameters.Set(Context.RHICmdList, ShaderRHI, Context.View);
const FPostProcessSettings& Settings = Context.View.FinalPostProcessSettings;
const FSceneViewFamily& ViewFamily = *(Context.View.Family);
FSceneViewState* ViewState = (FSceneViewState*)Context.View.State;
PostprocessParameter.SetPS(ShaderRHI, Context, TStaticSamplerState<SF_Point,AM_Clamp,AM_Clamp,AM_Clamp>::GetRHI());
// PostprocessInput1MS and EditorPrimitivesStencil
{
FRenderingCompositeOutputRef* OutputRef = Context.Pass->GetInput(ePId_Input1);
check(OutputRef);
FRenderingCompositeOutput* Input = OutputRef->GetOutput();
check(Input);
TRefCountPtr<IPooledRenderTarget> InputPooledElement = Input->RequestInput();
check(InputPooledElement);
FTexture2DRHIRef& TargetableTexture = (FTexture2DRHIRef&)InputPooledElement->GetRenderTargetItem().TargetableTexture;
SetTextureParameter(Context.RHICmdList, ShaderRHI, PostprocessInput1MS, TargetableTexture);
if(EditorPrimitivesStencil.IsBound())
{
// cache the stencil SRV to avoid create calls each frame (the cache element is stored in the state)
if(ViewState->SelectionOutlineCacheKey != TargetableTexture)
{
// release if not the right one (as the internally SRV stores a pointer to the texture we cannot get a false positive)
ViewState->SelectionOutlineCacheKey.SafeRelease();
ViewState->SelectionOutlineCacheValue.SafeRelease();
}
if(!ViewState->SelectionOutlineCacheValue)
{
// create if needed
ViewState->SelectionOutlineCacheKey = TargetableTexture;
ViewState->SelectionOutlineCacheValue = RHICreateShaderResourceView(TargetableTexture, 0, 1, PF_X24_G8);
}
SetSRVParameter(Context.RHICmdList, ShaderRHI, EditorPrimitivesStencil, ViewState->SelectionOutlineCacheValue);
}
}
#if WITH_EDITOR
{
FLinearColor OutlineColorValue = Context.View.SelectionOutlineColor;
FLinearColor SubduedOutlineColorValue = Context.View.SubduedSelectionOutlineColor;
OutlineColorValue.A = GEngine->SelectionHighlightIntensity;
SetShaderValue(Context.RHICmdList, ShaderRHI, OutlineColor, OutlineColorValue);
SetShaderValue(Context.RHICmdList, ShaderRHI, SubduedOutlineColor, SubduedOutlineColorValue);
SetShaderValue(Context.RHICmdList, ShaderRHI, BSPSelectionIntensity, GEngine->BSPSelectionHighlightIntensity);
}
#else
check(!"This shader is not used outside of the Editor.");
#endif
{
static const auto CVar = IConsoleManager::Get().FindTConsoleVariableDataFloat(TEXT("r.Editor.MovingPattern"));
FLinearColor Value(0, CVar->GetValueOnRenderThread(), 0, 0);
if(!ViewFamily.bRealtimeUpdate)
{
// no animation if realtime update is disabled
Value.G = 0;
}
SetShaderValue(Context.RHICmdList, ShaderRHI, EditorRenderParams, Value);
}
}
