void FRCPassPostProcessLpvIndirect::DoDirectionalOcclusionPass(FRenderingCompositePassContext& Context) const
{
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(Context.RHICmdList);
SCOPED_DRAW_EVENT(Context.RHICmdList, PostProcessLpvDirectionalOcclusion );
const FSceneRenderTargetItem& DestDirectionalOcclusionRenderTarget = SceneContext.DirectionalOcclusion->GetRenderTargetItem();
const FViewInfo& View = Context.View;
FSceneViewState* ViewState = (FSceneViewState*)View.State;
if(!ViewState)
{
return;
}
const FFinalPostProcessSettings& PostprocessSettings = Context.View.FinalPostProcessSettings;
const FLightPropagationVolumeSettings& LPVSettings = PostprocessSettings.BlendableManager.GetSingleFinalDataConst<FLightPropagationVolumeSettings>();
FLightPropagationVolume* Lpv = ViewState->GetLightPropagationVolume(Context.GetFeatureLevel());
if(!Lpv || LPVSettings.LPVIntensity == 0.0f)
{
return;
}
FTextureRHIParamRef RenderTarget = DestDirectionalOcclusionRenderTarget.TargetableTexture;
SetRenderTargets(Context.RHICmdList, 1, &RenderTarget, NULL, ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilNop);
Context.SetViewportAndCallRHI(View.ViewRect);
Context.RHICmdList.SetBlendState( TStaticBlendState<>::GetRHI() );
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false,CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(View.ShaderMap);
FLpvReadUniformBufferParameters LpvReadUniformBufferParams;
FLpvReadUniformBufferRef LpvReadUniformBuffer;
TShaderMapRef< FPostProcessLpvDirectionalOcclusionPS > PixelShader(View.ShaderMap);
static FGlobalBoundShaderState BoundShaderState;
// call it once after setting up the shader data to avoid the warnings in the function
SetGlobalBoundShaderState(Context.RHICmdList, Context.GetFeatureLevel(), BoundShaderState, GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, *PixelShader);
LpvReadUniformBufferParams = Lpv->GetReadUniformBufferParams();
LpvReadUniformBuffer = FLpvReadUniformBufferRef::CreateUniformBufferImmediate( LpvReadUniformBufferParams, UniformBuffer_SingleDraw );
PixelShader->SetParameters( Lpv->GetAOVolumeTextureSRV(), LpvReadUniformBuffer, Context );
DrawPostProcessPass(
Context.RHICmdList,
0, 0,
View.ViewRect.Width(), View.ViewRect.Height(),
View.ViewRect.Min.X, View.ViewRect.Min.Y,
View.ViewRect.Width(), View.ViewRect.Height(),
View.ViewRect.Size(),
SceneContext.GetBufferSizeXY(),
*VertexShader,
View.StereoPass,
Context.HasHmdMesh());
}
void FRCPassPostProcessLpvIndirect::Process(FRenderingCompositePassContext& Context)
{
FSceneRenderTargets& SceneContext = FSceneRenderTargets::Get(Context.RHICmdList);
{
FRenderingCompositeOutput* OutputOfMyInput = GetInput(ePId_Input0)->GetOutput();
PassOutputs[0].PooledRenderTarget = OutputOfMyInput->PooledRenderTarget;
OutputOfMyInput->RenderTargetDesc.DebugName = PassOutputs[0].RenderTargetDesc.DebugName;
PassOutputs[0].RenderTargetDesc = OutputOfMyInput->RenderTargetDesc;
check(PassOutputs[0].RenderTargetDesc.Extent.X);
check(PassOutputs[0].RenderTargetDesc.Extent.Y);
}
const FFinalPostProcessSettings& PostprocessSettings = Context.View.FinalPostProcessSettings;
const FSceneView& View = Context.View;
FSceneViewState* ViewState = (FSceneViewState*)View.State;
if(!ViewState)
{
return;
}
// This check should be inclusive to stereo views
const bool bIncludeStereoViews = true;
FLightPropagationVolume* Lpv = ViewState->GetLightPropagationVolume(Context.GetFeatureLevel(), bIncludeStereoViews);
const FLightPropagationVolumeSettings& LPVSettings = PostprocessSettings.BlendableManager.GetSingleFinalDataConst<FLightPropagationVolumeSettings>();
if(!Lpv || LPVSettings.LPVIntensity == 0.0f)
{
return;
}
const FSceneViewFamily& ViewFamily = *(View.Family);
FIntRect SrcRect = View.ViewRect;
// todo: view size should scale with input texture size so we can do SSAO in half resolution as well
FIntRect DestRect = View.ViewRect;
FIntPoint DestSize = DestRect.Size();
const bool bMixing = CVarLPVMixing.GetValueOnRenderThread() != 0;
// Apply specular separately if we're mixing reflection environment with indirect lighting
const bool bApplySeparateSpecularRT = View.Family->EngineShowFlags.ReflectionEnvironment && bMixing;
const FSceneRenderTargetItem& DestColorRenderTarget = SceneContext.GetSceneColor()->GetRenderTargetItem();
const FSceneRenderTargetItem& DestSpecularRenderTarget = SceneContext.LightAccumulation->GetRenderTargetItem();
const FSceneRenderTargetItem& DestDirectionalOcclusionRenderTarget = SceneContext.DirectionalOcclusion->GetRenderTargetItem();
// Make sure the LPV Update has completed
Lpv->InsertGPUWaitForAsyncUpdate(Context.RHICmdList);
if ( LPVSettings.LPVDirectionalOcclusionIntensity > 0.0001f )
{
DoDirectionalOcclusionPass(Context);
}
FTextureRHIParamRef RenderTargets[2];
RenderTargets[0] = DestColorRenderTarget.TargetableTexture;
RenderTargets[1] = DestSpecularRenderTarget.TargetableTexture;
// Set the view family's render target/viewport.
// If specular not applied: set only color target
uint32 NumRenderTargets = 1;
if ( bApplySeparateSpecularRT )
{
NumRenderTargets = 2;
}
SetRenderTargets(Context.RHICmdList, NumRenderTargets, RenderTargets, 0, ESimpleRenderTargetMode::EExistingColorAndDepth, FExclusiveDepthStencil::DepthRead_StencilNop);
Context.SetViewportAndCallRHI(View.ViewRect);
// set the state
Context.RHICmdList.SetBlendState(TStaticBlendState<CW_RGB,BO_Add,BF_One,BF_One,BO_Add,BF_One,BF_One>::GetRHI());
Context.RHICmdList.SetRasterizerState(TStaticRasterizerState<>::GetRHI());
Context.RHICmdList.SetDepthStencilState(TStaticDepthStencilState<false,CF_Always>::GetRHI());
TShaderMapRef<FPostProcessVS> VertexShader(Context.GetShaderMap());
TShaderMapRef< TPostProcessLpvIndirectPS<false> > PixelShaderNoSpecular(Context.GetShaderMap());
TShaderMapRef< TPostProcessLpvIndirectPS<true> > PixelShaderWithSpecular(Context.GetShaderMap());
FPostProcessLpvIndirectPS* PixelShader = NULL;
int BoundShaderIndex = -1;
if ( bApplySeparateSpecularRT )
{
PixelShader = (FPostProcessLpvIndirectPS*)*PixelShaderWithSpecular;
BoundShaderIndex = 0;
}
else
{
PixelShader = (FPostProcessLpvIndirectPS*)*PixelShaderNoSpecular;
BoundShaderIndex = 1;
}
static FGlobalBoundShaderState BoundShaderState[2];
// call it once after setting up the shader data to avoid the warnings in the function
SetGlobalBoundShaderState(Context.RHICmdList, Context.GetFeatureLevel(), BoundShaderState[BoundShaderIndex], GFilterVertexDeclaration.VertexDeclarationRHI, *VertexShader, PixelShader);
FLpvReadUniformBufferParameters LpvReadUniformBufferParams;
FLpvReadUniformBufferRef LpvReadUniformBuffer;
LpvReadUniformBufferParams = Lpv->GetReadUniformBufferParams();
LpvReadUniformBuffer = FLpvReadUniformBufferRef::CreateUniformBufferImmediate( LpvReadUniformBufferParams, UniformBuffer_SingleDraw );
FTextureRHIParamRef LpvBufferSrvs[7];
for ( int i = 0; i < 7; i++ )
{
LpvBufferSrvs[i] = Lpv->GetLpvBufferSrv(i);
}
PixelShader->SetParameters( LpvBufferSrvs, Lpv->GetAOVolumeTextureSRV(), LpvReadUniformBuffer, Context );
{
SCOPED_DRAW_EVENT(Context.RHICmdList, PostProcessLpvIndirect );
DrawPostProcessPass(
Context.RHICmdList,
0, 0,
View.ViewRect.Width(), View.ViewRect.Height(),
View.ViewRect.Min.X, View.ViewRect.Min.Y,
View.ViewRect.Width(), View.ViewRect.Height(),
View.ViewRect.Size(),
SceneContext.GetBufferSizeXY(),
*VertexShader,
View.StereoPass,
Context.HasHmdMesh());
Context.RHICmdList.CopyToResolveTarget(DestColorRenderTarget.TargetableTexture, DestColorRenderTarget.ShaderResourceTexture, false, FResolveParams());
if(bApplySeparateSpecularRT)
{
Context.RHICmdList.CopyToResolveTarget(DestSpecularRenderTarget.TargetableTexture, DestSpecularRenderTarget.ShaderResourceTexture, false, FResolveParams());
}
}
if ( LPVSettings.LPVDirectionalOcclusionIntensity > 0.0001f )
{
GRenderTargetPool.VisualizeTexture.SetCheckPoint(Context.RHICmdList, SceneContext.DirectionalOcclusion);
}
}