void FCompositionLighting::ProcessLpvIndirect(FRHICommandListImmediate& RHICmdList, FViewInfo& View)
{
check(IsInRenderingThread());
FMemMark Mark(FMemStack::Get());
FRenderingCompositePassContext CompositeContext(RHICmdList, View);
FPostprocessContext Context(CompositeContext.Graph, View);
if(IsLpvIndirectPassRequired(Context))
{
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(RHICmdList);
FRenderingCompositePass* SSAO = Context.Graph.RegisterPass(new FRCPassPostProcessInput(SceneContext.ScreenSpaceAO));
FRenderingCompositePass* Pass = Context.Graph.RegisterPass(new FRCPassPostProcessLpvIndirect());
Pass->SetInput(ePId_Input0, Context.FinalOutput);
Pass->SetInput(ePId_Input1, SSAO );
Context.FinalOutput = FRenderingCompositeOutputRef(Pass);
}
// The graph setup should be finished before this line ----------------------------------------
SCOPED_DRAW_EVENT(RHICmdList, CompositionLpvIndirect);
// we don't replace the final element with the scenecolor because this is what those passes should do by themself
CompositeContext.Process(Context.FinalOutput.GetPass(), TEXT("CompositionLighting"));
}
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;
}
