void FCompositionLighting::ProcessAfterBasePass(FRHICommandListImmediate& RHICmdList, FViewInfo& View)
{
check(IsInRenderingThread());
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(RHICmdList);
// might get renamed to refracted or ...WithAO
SceneContext.GetSceneColor()->SetDebugName(TEXT("SceneColor"));
// to be able to observe results with VisualizeTexture
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GetSceneColor());
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferA);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferB);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferC);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferD);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferE);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferVelocity);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.ScreenSpaceAO);
// so that the passes can register themselves to the graph
{
FMemMark Mark(FMemStack::Get());
FRenderingCompositePassContext CompositeContext(RHICmdList, View);
FPostprocessContext Context(CompositeContext.Graph, View);
// Add the passes we want to add to the graph (commenting a line means the pass is not inserted into the graph) ----------
// decals are before AmbientOcclusion so the decal can output a normal that AO is affected by
if( Context.View.Family->EngineShowFlags.Decals &&
!Context.View.Family->EngineShowFlags.VisualizeLightCulling) // decal are distracting when looking at LightCulling
{
AddDeferredDecalsBeforeLighting(Context);
}
FRenderingCompositeOutputRef AmbientOcclusion;
if(uint32 Levels = ComputeAmbientOcclusionPassCount(Context))
{
AmbientOcclusion = AddPostProcessingAmbientOcclusion(RHICmdList, Context, Levels);
}
if(IsAmbientCubemapPassRequired(Context))
{
AddPostProcessingAmbientCubemap(Context, AmbientOcclusion);
}
// The graph setup should be finished before this line ----------------------------------------
SCOPED_DRAW_EVENT(RHICmdList, LightCompositionTasks_PreLighting);
TRefCountPtr<IPooledRenderTarget>& SceneColor = SceneContext.GetSceneColor();
Context.FinalOutput.GetOutput()->RenderTargetDesc = SceneColor->GetDesc();
Context.FinalOutput.GetOutput()->PooledRenderTarget = SceneColor;
CompositeContext.Process(Context.FinalOutput.GetPass(), TEXT("CompositionLighting_AfterBasePass"));
}
}
bool ShouldRenderScreenSpaceAmbientOcclusion(const FViewInfo& View)
{
bool bEnabled = true;
if (!IsLpvIndirectPassRequired(View))
{
bEnabled = View.FinalPostProcessSettings.AmbientOcclusionIntensity > 0
&& View.Family->EngineShowFlags.Lighting
&& View.FinalPostProcessSettings.AmbientOcclusionRadius >= 0.1f
&& !View.Family->UseDebugViewPS()
&& (FSSAOHelper::IsBasePassAmbientOcclusionRequired(View) || IsAmbientCubemapPassRequired(View) || IsReflectionEnvironmentActive(View) || IsSkylightActive(View) || View.Family->EngineShowFlags.VisualizeBuffer)
&& !IsAnyForwardShadingEnabled(View.GetShaderPlatform());
}
return bEnabled;
}
// @return 0:off, 0..4
static uint32 ComputeAmbientOcclusionPassCount(FPostprocessContext& Context)
{
uint32 Ret = 0;
bool bEnabled = true;
if(!IsLpvIndirectPassRequired(Context))
{
bEnabled = Context.View.FinalPostProcessSettings.AmbientOcclusionIntensity > 0
&& Context.View.FinalPostProcessSettings.AmbientOcclusionRadius >= 0.1f
&& (IsBasePassAmbientOcclusionRequired(Context) || IsAmbientCubemapPassRequired(Context) || IsReflectionEnvironmentActive(Context) || IsSkylightActive(Context) || Context.View.Family->EngineShowFlags.VisualizeBuffer )
&& !IsSimpleDynamicLightingEnabled();
}
if(bEnabled)
{
static const auto ICVar = IConsoleManager::Get().FindTConsoleVariableDataInt(TEXT("r.AmbientOcclusionLevels"));
Ret = FMath::Clamp(ICVar->GetValueOnRenderThread(), 0, 4);
}
return Ret;
}
void FCompositionLighting::ProcessAfterBasePass(FRHICommandListImmediate& RHICmdList, FViewInfo& View)
{
check(IsInRenderingThread());
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(RHICmdList);
// might get renamed to refracted or ...WithAO
SceneContext.GetSceneColor()->SetDebugName(TEXT("SceneColor"));
// to be able to observe results with VisualizeTexture
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GetSceneColor());
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferA);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferB);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferC);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferD);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferE);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.GBufferVelocity);
GRenderTargetPool.VisualizeTexture.SetCheckPoint(RHICmdList, SceneContext.ScreenSpaceAO);
// so that the passes can register themselves to the graph
{
FMemMark Mark(FMemStack::Get());
FRenderingCompositePassContext CompositeContext(RHICmdList, View);
FPostprocessContext Context(RHICmdList, CompositeContext.Graph, View);
// Add the passes we want to add to the graph ----------
if( Context.View.Family->EngineShowFlags.Decals &&
!Context.View.Family->EngineShowFlags.ShaderComplexity)
{
// DRS_AfterBasePass is for Volumetric decals which don't support ShaderComplexity yet
FRenderingCompositePass* Pass = Context.Graph.RegisterPass(new(FMemStack::Get()) FRCPassPostProcessDeferredDecals(DRS_AfterBasePass));
Pass->SetInput(ePId_Input0, Context.FinalOutput);
Context.FinalOutput = FRenderingCompositeOutputRef(Pass);
}
// decals are before AmbientOcclusion so the decal can output a normal that AO is affected by
if( Context.View.Family->EngineShowFlags.Decals &&
!Context.View.Family->EngineShowFlags.VisualizeLightCulling) // decal are distracting when looking at LightCulling
{
FRenderingCompositePass* Pass = Context.Graph.RegisterPass(new(FMemStack::Get()) FRCPassPostProcessDeferredDecals(DRS_BeforeLighting));
Pass->SetInput(ePId_Input0, Context.FinalOutput);
Context.FinalOutput = FRenderingCompositeOutputRef(Pass);
}
FRenderingCompositeOutputRef AmbientOcclusion;
uint32 SSAOLevels = ComputeAmbientOcclusionPassCount(Context.View);
if (SSAOLevels)
{
if(!FSSAOHelper::IsAmbientOcclusionAsyncCompute(Context.View, SSAOLevels))
{
AmbientOcclusion = AddPostProcessingAmbientOcclusion(RHICmdList, Context, SSAOLevels);
}
if (FSSAOHelper::IsBasePassAmbientOcclusionRequired(Context.View))
{
FRenderingCompositePass* Pass = Context.Graph.RegisterPass(new(FMemStack::Get()) FRCPassPostProcessBasePassAO());
Pass->AddDependency(Context.FinalOutput);
Context.FinalOutput = FRenderingCompositeOutputRef(Pass);
}
}
if (IsAmbientCubemapPassRequired(Context.View))
{
AddPostProcessingAmbientCubemap(Context, AmbientOcclusion);
}
// The graph setup should be finished before this line ----------------------------------------
SCOPED_DRAW_EVENT(RHICmdList, LightCompositionTasks_PreLighting);
SCOPED_GPU_STAT(RHICmdList, Stat_GPU_CompositionPreLighting);
TRefCountPtr<IPooledRenderTarget>& SceneColor = SceneContext.GetSceneColor();
Context.FinalOutput.GetOutput()->RenderTargetDesc = SceneColor->GetDesc();
Context.FinalOutput.GetOutput()->PooledRenderTarget = SceneColor;
CompositeContext.Process(Context.FinalOutput.GetPass(), TEXT("CompositionLighting_AfterBasePass"));
}
}
