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This also implements r.Translucency.ScreenPercentage.Basis to experiment controling the translucency resolution independently from the primary screen percentage #rb none #jira UE-152560 #preflight 6294fbc4e61254772f5834a6 #ROBOMERGE-AUTHOR: guillaume.abadie #ROBOMERGE-SOURCE: CL 20432059 via CL 20432067 via CL 20432069 #ROBOMERGE-BOT: UE5 (Release-Engine-Staging -> Main) (v949-20362246) [CL 20434142 by guillaume abadie in ue5-main branch]
1543 lines
65 KiB
C++
1543 lines
65 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#include "TranslucentRendering.h"
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#include "DeferredShadingRenderer.h"
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#include "BasePassRendering.h"
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#include "DynamicPrimitiveDrawing.h"
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#include "RendererModule.h"
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#include "ScenePrivate.h"
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#include "SceneTextureParameters.h"
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#include "ScreenRendering.h"
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#include "ScreenPass.h"
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#include "MeshPassProcessor.inl"
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#include "VolumetricRenderTarget.h"
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#include "VariableRateShadingImageManager.h"
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#include "Lumen/LumenTranslucencyVolumeLighting.h"
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#include "VirtualShadowMaps/VirtualShadowMapArray.h"
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#include "Strata/Strata.h"
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#include "HairStrands/HairStrandsUtils.h"
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#include "PixelShaderUtils.h"
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#include "OIT/OIT.h"
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#include "OIT/OITParameters.h"
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#include "DynamicResolutionState.h"
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#include "TemporalAA.h"
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DECLARE_CYCLE_STAT(TEXT("TranslucencyTimestampQueryFence Wait"), STAT_TranslucencyTimestampQueryFence_Wait, STATGROUP_SceneRendering);
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DECLARE_CYCLE_STAT(TEXT("TranslucencyTimestampQuery Wait"), STAT_TranslucencyTimestampQuery_Wait, STATGROUP_SceneRendering);
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DECLARE_CYCLE_STAT(TEXT("Translucency"), STAT_CLP_Translucency, STATGROUP_ParallelCommandListMarkers);
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DECLARE_FLOAT_COUNTER_STAT(TEXT("Translucency GPU Time (MS)"), STAT_TranslucencyGPU, STATGROUP_SceneRendering);
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DEFINE_GPU_DRAWCALL_STAT(Translucency);
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static TAutoConsoleVariable<float> CVarSeparateTranslucencyScreenPercentage(
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TEXT("r.SeparateTranslucencyScreenPercentage"),
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100.0f,
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TEXT("Render separate translucency at this percentage of the full resolution.\n")
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TEXT("in percent, >0 and <=100, larger numbers are possible (supersampling).")
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TEXT("<0 is treated like 100."),
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ECVF_Scalability | ECVF_Default);
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static TAutoConsoleVariable<int32> CVarTranslucencyScreenPercentageBasis(
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TEXT("r.Translucency.ScreenPercentage.Basis"), 0,
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TEXT("Basis of the translucency's screen percentage (Experimental).\n")
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TEXT(" 0: Uses the primary view's resolution (notably scaling with r.ScreenPercentage and r.DynamicRes.*)\n")
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TEXT(" 1: Uses the secondary view's resolution (temporal upscale's output resolution)"),
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ECVF_Scalability | ECVF_Default);
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static TAutoConsoleVariable<float> CVarTranslucencyMinScreenPercentage(
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TEXT("r.Translucency.DynamicRes.MinScreenPercentage"),
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DynamicRenderScaling::FractionToPercentage(DynamicRenderScaling::FHeuristicSettings::kDefaultMinResolutionFraction),
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TEXT("Minimal screen percentage for translucency."),
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ECVF_RenderThreadSafe | ECVF_Default);
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static TAutoConsoleVariable<float> CVarTranslucencyTimeBudget(
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TEXT("r.Translucency.DynamicRes.TimeBudget"),
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DynamicRenderScaling::FHeuristicSettings::kBudgetMsDisabled,
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TEXT("Frame's time budget for translucency rendering in milliseconds."),
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ECVF_RenderThreadSafe | ECVF_Default);
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static TAutoConsoleVariable<float> CVarTranslucencyTargetedHeadRoomPercentage(
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TEXT("r.Translucency.DynamicRes.TargetedHeadRoomPercentage"),
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DynamicRenderScaling::FractionToPercentage(DynamicRenderScaling::FHeuristicSettings::kDefaultTargetedHeadRoom),
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TEXT("Targeted GPU headroom for translucency (in percent from r.DynamicRes.DynamicRes.TimeBudget)."),
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ECVF_RenderThreadSafe | ECVF_Default);
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static TAutoConsoleVariable<float> CVarTranslucencyChangeThreshold(
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TEXT("r.Translucency.DynamicRes.ChangePercentageThreshold"),
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DynamicRenderScaling::FractionToPercentage(DynamicRenderScaling::FHeuristicSettings::kDefaultChangeThreshold),
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TEXT("Minimal increase percentage threshold to alow when changing resolution of translucency."),
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ECVF_RenderThreadSafe | ECVF_Default);
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int32 GSeparateTranslucencyUpsampleMode = 1;
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static FAutoConsoleVariableRef CVarSeparateTranslucencyUpsampleMode(
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TEXT("r.SeparateTranslucencyUpsampleMode"),
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GSeparateTranslucencyUpsampleMode,
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TEXT("Upsample method to use on separate translucency. These are only used when r.SeparateTranslucencyScreenPercentage is less than 100.\n")
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TEXT("0: bilinear 1: Nearest-Depth Neighbor (only when r.SeparateTranslucencyScreenPercentage is 50)"),
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ECVF_Scalability | ECVF_Default);
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static TAutoConsoleVariable<int32> CVarRHICmdFlushRenderThreadTasksTranslucentPass(
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TEXT("r.RHICmdFlushRenderThreadTasksTranslucentPass"),
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0,
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TEXT("Wait for completion of parallel render thread tasks at the end of the translucent pass. A more granular version of r.RHICmdFlushRenderThreadTasks. If either r.RHICmdFlushRenderThreadTasks or r.RHICmdFlushRenderThreadTasksTranslucentPass is > 0 we will flush."));
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static TAutoConsoleVariable<int32> CVarParallelTranslucency(
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TEXT("r.ParallelTranslucency"),
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1,
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TEXT("Toggles parallel translucency rendering. Parallel rendering must be enabled for this to have an effect."),
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ECVF_RenderThreadSafe);
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DynamicRenderScaling::FHeuristicSettings GetDynamicTranslucencyResolutionSettings()
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{
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DynamicRenderScaling::FHeuristicSettings BucketSetting;
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BucketSetting.Model = DynamicRenderScaling::EHeuristicModel::Quadratic;
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BucketSetting.bModelScalesWithPrimaryScreenPercentage = CVarTranslucencyScreenPercentageBasis.GetValueOnAnyThread() != 1;
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BucketSetting.MinResolutionFraction = DynamicRenderScaling::GetPercentageCVarToFraction(CVarTranslucencyMinScreenPercentage);
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BucketSetting.BudgetMs = CVarTranslucencyTimeBudget.GetValueOnAnyThread();
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BucketSetting.ChangeThreshold = DynamicRenderScaling::GetPercentageCVarToFraction(CVarTranslucencyChangeThreshold);
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BucketSetting.TargetedHeadRoom = DynamicRenderScaling::GetPercentageCVarToFraction(CVarTranslucencyTargetedHeadRoomPercentage);
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return BucketSetting;
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}
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DynamicRenderScaling::FBudget GDynamicTranslucencyResolution(TEXT("DynamicTranslucencyResolution"), &GetDynamicTranslucencyResolutionSettings);
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static const TCHAR* kTranslucencyPassName[] = {
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TEXT("BeforeDistortion"),
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TEXT("AfterDOF"),
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TEXT("AfterDOFModulate"),
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TEXT("AfterMotionBlur"),
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TEXT("All"),
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};
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static_assert(UE_ARRAY_COUNT(kTranslucencyPassName) == int32(ETranslucencyPass::TPT_MAX), "Fix me");
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static const TCHAR* kTranslucencyColorTextureName[] = {
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TEXT("Translucency.BeforeDistortion.Color"),
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TEXT("Translucency.AfterDOF.Color"),
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TEXT("Translucency.AfterDOF.Modulate"),
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TEXT("Translucency.AfterMotionBlur.Color"),
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TEXT("Translucency.All.Color"),
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};
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static_assert(UE_ARRAY_COUNT(kTranslucencyColorTextureName) == int32(ETranslucencyPass::TPT_MAX), "Fix me");
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static const TCHAR* TranslucencyPassToString(ETranslucencyPass::Type TranslucencyPass)
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{
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return kTranslucencyPassName[TranslucencyPass];
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}
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EMeshPass::Type TranslucencyPassToMeshPass(ETranslucencyPass::Type TranslucencyPass)
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{
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EMeshPass::Type TranslucencyMeshPass = EMeshPass::Num;
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switch (TranslucencyPass)
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{
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case ETranslucencyPass::TPT_StandardTranslucency: TranslucencyMeshPass = EMeshPass::TranslucencyStandard; break;
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case ETranslucencyPass::TPT_TranslucencyAfterDOF: TranslucencyMeshPass = EMeshPass::TranslucencyAfterDOF; break;
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case ETranslucencyPass::TPT_TranslucencyAfterDOFModulate: TranslucencyMeshPass = EMeshPass::TranslucencyAfterDOFModulate; break;
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case ETranslucencyPass::TPT_TranslucencyAfterMotionBlur: TranslucencyMeshPass = EMeshPass::TranslucencyAfterMotionBlur; break;
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case ETranslucencyPass::TPT_AllTranslucency: TranslucencyMeshPass = EMeshPass::TranslucencyAll; break;
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}
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check(TranslucencyMeshPass != EMeshPass::Num);
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return TranslucencyMeshPass;
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}
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ETranslucencyView GetTranslucencyView(const FViewInfo& View)
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{
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#if RHI_RAYTRACING
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if (ShouldRenderRayTracingTranslucency(View))
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{
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return ETranslucencyView::RayTracing;
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}
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#endif
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return View.IsUnderwater() ? ETranslucencyView::UnderWater : ETranslucencyView::AboveWater;
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}
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ETranslucencyView GetTranslucencyViews(TArrayView<const FViewInfo> Views)
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{
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ETranslucencyView TranslucencyViews = ETranslucencyView::None;
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for (const FViewInfo& View : Views)
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{
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TranslucencyViews |= GetTranslucencyView(View);
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}
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return TranslucencyViews;
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}
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/** Mostly used to know if debug rendering should be drawn in this pass */
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static bool IsMainTranslucencyPass(ETranslucencyPass::Type TranslucencyPass)
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{
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return TranslucencyPass == ETranslucencyPass::TPT_AllTranslucency || TranslucencyPass == ETranslucencyPass::TPT_StandardTranslucency;
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}
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static bool IsParallelTranslucencyEnabled()
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{
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return GRHICommandList.UseParallelAlgorithms() && CVarParallelTranslucency.GetValueOnRenderThread();
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}
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static bool IsTranslucencyWaitForTasksEnabled()
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{
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return IsParallelTranslucencyEnabled() && (CVarRHICmdFlushRenderThreadTasksTranslucentPass.GetValueOnRenderThread() > 0 || CVarRHICmdFlushRenderThreadTasks.GetValueOnRenderThread() > 0);
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}
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static bool IsSeparateTranslucencyEnabled(ETranslucencyPass::Type TranslucencyPass, float DownsampleScale)
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{
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// Currently AfterDOF is rendered earlier in the frame and must be rendered in a separate texture.
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if (TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterDOF
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|| TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterDOFModulate
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|| TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterMotionBlur
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)
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{
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return true;
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}
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// Otherwise it only gets rendered in the separate buffer if it is downsampled.
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if (DownsampleScale < 1.0f)
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{
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return true;
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}
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return false;
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}
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static int GetSSRQuality()
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{
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static IConsoleVariable* CVar = IConsoleManager::Get().FindConsoleVariable(TEXT("r.SSR.Quality"));
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int SSRQuality = CVar ? (CVar->GetInt()) : 0;
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return SSRQuality;
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}
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static bool ShouldRenderTranslucencyScreenSpaceReflections(const FViewInfo& View)
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{
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// The screenspace reflection of translucency is not controlled by the postprocessing setting
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// or the raytracing overlay setting. It needs to be turned on/off dynamically to support
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// diffuse only
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if (!View.Family->EngineShowFlags.ScreenSpaceReflections)
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{
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return false;
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}
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int SSRQuality = GetSSRQuality();
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if (SSRQuality <= 0)
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{
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return false;
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}
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return true;
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}
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FSeparateTranslucencyDimensions UpdateSeparateTranslucencyDimensions(const FViewFamilyInfo& ActiveViewFamily)
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{
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float TranslucencyResolutionFraction = FMath::Clamp(CVarSeparateTranslucencyScreenPercentage.GetValueOnRenderThread() / 100.0f, 0.0f, 1.0f);
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float MaxTranslucencyResolutionFraction = TranslucencyResolutionFraction;
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if (GDynamicTranslucencyResolution.GetSettings().IsEnabled())
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{
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TranslucencyResolutionFraction = ActiveViewFamily.DynamicResolutionFractions[GDynamicTranslucencyResolution];
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MaxTranslucencyResolutionFraction = ActiveViewFamily.DynamicResolutionUpperBounds[GDynamicTranslucencyResolution];
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}
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if (CVarTranslucencyScreenPercentageBasis.GetValueOnRenderThread() == 1)
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{
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TranslucencyResolutionFraction /= ActiveViewFamily.DynamicResolutionFractions[GDynamicPrimaryResolutionFraction];
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MaxTranslucencyResolutionFraction /= ActiveViewFamily.DynamicResolutionUpperBounds[GDynamicPrimaryResolutionFraction];
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}
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FSeparateTranslucencyDimensions Dimensions;
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// TODO: this should be MaxTranslucencyResolutionFraction instead of TranslucencyResolutionFraction to keep the size of render target stable, but the SvPositionToBuffer() is broken in material.
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Dimensions.Extent = GetScaledExtent(ActiveViewFamily.SceneTexturesConfig.Extent, TranslucencyResolutionFraction);
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Dimensions.NumSamples = ActiveViewFamily.SceneTexturesConfig.NumSamples;
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Dimensions.Scale = TranslucencyResolutionFraction;
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return Dimensions;
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}
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FTranslucencyPassResourcesMap::FTranslucencyPassResourcesMap(int32 NumViews)
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{
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Array.SetNum(NumViews);
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for (int32 ViewIndex = 0; ViewIndex < NumViews; ViewIndex++)
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{
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for (int32 i = 0; i < int32(ETranslucencyPass::TPT_MAX); i++)
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{
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Array[ViewIndex][i].Pass = ETranslucencyPass::Type(i);
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}
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}
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}
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/** Pixel shader used to copy scene color into another texture so that materials can read from scene color with a node. */
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class FCopySceneColorPS : public FGlobalShader
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{
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public:
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DECLARE_GLOBAL_SHADER(FCopySceneColorPS);
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SHADER_USE_PARAMETER_STRUCT(FCopySceneColorPS, FGlobalShader);
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BEGIN_SHADER_PARAMETER_STRUCT(FParameters, )
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SHADER_PARAMETER_STRUCT_REF(FViewUniformShaderParameters, View)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SceneColorTexture)
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RENDER_TARGET_BINDING_SLOTS()
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END_SHADER_PARAMETER_STRUCT()
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static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters)
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{
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return IsFeatureLevelSupported(Parameters.Platform, ERHIFeatureLevel::SM5);
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}
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};
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IMPLEMENT_GLOBAL_SHADER(FCopySceneColorPS, "/Engine/Private/TranslucentLightingShaders.usf", "CopySceneColorMain", SF_Pixel);
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static FRDGTextureRef AddCopySceneColorPass(FRDGBuilder& GraphBuilder, TArrayView<const FViewInfo> Views, FRDGTextureMSAA SceneColor)
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{
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FRDGTextureRef SceneColorCopyTexture = nullptr;
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ERenderTargetLoadAction LoadAction = ERenderTargetLoadAction::ENoAction;
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RDG_EVENT_SCOPE(GraphBuilder, "CopySceneColor");
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for (int32 ViewIndex = 0; ViewIndex < Views.Num(); ++ViewIndex)
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{
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const FViewInfo& View = Views[ViewIndex];
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if (View.IsUnderwater())
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{
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continue;
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}
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bool bNeedsResolve = false;
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for (int32 TranslucencyPass = 0; TranslucencyPass < ETranslucencyPass::TPT_MAX; ++TranslucencyPass)
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{
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if (View.TranslucentPrimCount.UseSceneColorCopy((ETranslucencyPass::Type)TranslucencyPass))
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{
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bNeedsResolve = true;
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break;
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}
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}
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if (bNeedsResolve)
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{
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RDG_GPU_MASK_SCOPE(GraphBuilder, View.GPUMask);
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RDG_EVENT_SCOPE_CONDITIONAL(GraphBuilder, Views.Num() > 1, "View%d", ViewIndex);
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AddResolveSceneColorPass(GraphBuilder, View, SceneColor);
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const FIntPoint SceneColorExtent = SceneColor.Target->Desc.Extent;
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if (!SceneColorCopyTexture)
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{
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SceneColorCopyTexture = GraphBuilder.CreateTexture(FRDGTextureDesc::Create2D(SceneColorExtent, PF_B8G8R8A8, FClearValueBinding::White, TexCreate_ShaderResource | TexCreate_RenderTargetable), TEXT("SceneColorCopy"));
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}
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const FScreenPassTextureViewport Viewport(SceneColorCopyTexture, View.ViewRect);
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TShaderMapRef<FScreenVS> VertexShader(View.ShaderMap);
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TShaderMapRef<FCopySceneColorPS> PixelShader(View.ShaderMap);
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auto* PassParameters = GraphBuilder.AllocParameters<FCopySceneColorPS::FParameters>();
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PassParameters->View = View.ViewUniformBuffer;
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PassParameters->SceneColorTexture = SceneColor.Resolve;
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PassParameters->RenderTargets[0] = FRenderTargetBinding(SceneColorCopyTexture, LoadAction);
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if (!View.Family->bMultiGPUForkAndJoin)
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{
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LoadAction = ERenderTargetLoadAction::ELoad;
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}
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AddDrawScreenPass(GraphBuilder, {}, View, Viewport, Viewport, VertexShader, PixelShader, PassParameters);
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}
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}
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return SceneColorCopyTexture;
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}
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class FComposeSeparateTranslucencyPS : public FGlobalShader
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{
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DECLARE_GLOBAL_SHADER(FComposeSeparateTranslucencyPS);
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SHADER_USE_PARAMETER_STRUCT(FComposeSeparateTranslucencyPS, FGlobalShader);
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class FNearestDepthNeighborUpsampling : SHADER_PERMUTATION_BOOL("PERMUTATION_NEARESTDEPTHNEIGHBOR");
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using FPermutationDomain = TShaderPermutationDomain<FNearestDepthNeighborUpsampling>;
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BEGIN_SHADER_PARAMETER_STRUCT(FParameters, )
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SHADER_PARAMETER(FScreenTransform, ScreenPosToSceneColorUV)
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SHADER_PARAMETER(FScreenTransform, ScreenPosToSeparateTranslucencyUV)
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SHADER_PARAMETER(FVector2f, SeparateTranslucencyUVMin)
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SHADER_PARAMETER(FVector2f, SeparateTranslucencyUVMax)
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SHADER_PARAMETER(FVector2f, SeparateTranslucencyExtentInverse)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SceneColorTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, SceneColorSampler)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SeparateTranslucencyPointTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, SeparateTranslucencyPointSampler)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SeparateModulationPointTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, SeparateModulationPointSampler)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SeparateTranslucencyBilinearTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, SeparateTranslucencyBilinearSampler)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SeparateModulationBilinearTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, SeparateModulationBilinearSampler)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, LowResDepthTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, LowResDepthSampler)
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SHADER_PARAMETER_RDG_TEXTURE(Texture2D, FullResDepthTexture)
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SHADER_PARAMETER_SAMPLER(SamplerState, FullResDepthSampler)
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SHADER_PARAMETER_STRUCT_REF(FViewUniformShaderParameters, ViewUniformBuffer)
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RENDER_TARGET_BINDING_SLOTS()
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END_SHADER_PARAMETER_STRUCT()
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static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters)
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{
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return IsFeatureLevelSupported(Parameters.Platform, ERHIFeatureLevel::SM5);
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}
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};
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class FTranslucencyUpsampleResponsiveAAPS : public FGlobalShader
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{
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DECLARE_GLOBAL_SHADER(FTranslucencyUpsampleResponsiveAAPS);
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SHADER_USE_PARAMETER_STRUCT(FTranslucencyUpsampleResponsiveAAPS, FGlobalShader);
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BEGIN_SHADER_PARAMETER_STRUCT(FParameters, )
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SHADER_PARAMETER(FIntPoint, StencilPixelPosMin)
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SHADER_PARAMETER(FIntPoint, StencilPixelPosMax)
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SHADER_PARAMETER(FScreenTransform, SvPositionToStencilPixelCoord)
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SHADER_PARAMETER(int32, StencilMask)
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SHADER_PARAMETER_RDG_TEXTURE_SRV(Texture2D, StencilTexture)
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RENDER_TARGET_BINDING_SLOTS()
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END_SHADER_PARAMETER_STRUCT()
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|
|
static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters)
|
|
{
|
|
return IsFeatureLevelSupported(Parameters.Platform, ERHIFeatureLevel::SM5);
|
|
}
|
|
};
|
|
|
|
IMPLEMENT_GLOBAL_SHADER(FComposeSeparateTranslucencyPS, "/Engine/Private/ComposeSeparateTranslucency.usf", "MainPS", SF_Pixel);
|
|
IMPLEMENT_GLOBAL_SHADER(FTranslucencyUpsampleResponsiveAAPS, "/Engine/Private/TranslucencyUpsampling.usf", "UpsampleResponsiveAAPS", SF_Pixel);
|
|
|
|
|
|
FScreenPassTexture FTranslucencyComposition::AddPass(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FViewInfo& View,
|
|
const FTranslucencyPassResources& TranslucencyTextures) const
|
|
{
|
|
// if nothing is rendered into the separate translucency, then just return the existing Scenecolor
|
|
ensure(TranslucencyTextures.IsValid());
|
|
if (!TranslucencyTextures.IsValid())
|
|
{
|
|
return SceneColor;
|
|
}
|
|
|
|
FRDGTextureRef SeparateModulationTexture = TranslucencyTextures.GetColorModulateForRead(GraphBuilder);
|
|
FRDGTextureRef SeparateTranslucencyTexture = TranslucencyTextures.GetColorForRead(GraphBuilder);
|
|
|
|
FScreenPassTextureViewport SceneColorViewport(FIntPoint(1, 1), FIntRect(0, 0, 1, 1));
|
|
if (SceneColor.IsValid())
|
|
{
|
|
SceneColorViewport = FScreenPassTextureViewport(SceneColor);
|
|
}
|
|
|
|
FScreenPassTextureViewport TranslucencyViewport(FIntPoint(1, 1), FIntRect(0, 0, 1, 1));
|
|
if (TranslucencyTextures.ColorTexture.IsValid())
|
|
{
|
|
TranslucencyViewport = FScreenPassTextureViewport(TranslucencyTextures.ColorTexture.Resolve, TranslucencyTextures.ViewRect);
|
|
}
|
|
else if (TranslucencyTextures.ColorModulateTexture.IsValid())
|
|
{
|
|
TranslucencyViewport = FScreenPassTextureViewport(TranslucencyTextures.ColorModulateTexture.Resolve, TranslucencyTextures.ViewRect);
|
|
}
|
|
|
|
bool bPostMotionBlur = TranslucencyTextures.Pass == ETranslucencyPass::TPT_TranslucencyAfterMotionBlur;
|
|
if (bPostMotionBlur)
|
|
{
|
|
check(!bApplyModulateOnly);
|
|
}
|
|
else if (bApplyModulateOnly)
|
|
{
|
|
if (!TranslucencyTextures.ColorModulateTexture.IsValid())
|
|
{
|
|
return SceneColor;
|
|
}
|
|
|
|
SeparateTranslucencyTexture = GraphBuilder.RegisterExternalTexture(GSystemTextures.BlackAlphaOneDummy);
|
|
}
|
|
|
|
RDG_GPU_STAT_SCOPE(GraphBuilder, Translucency);
|
|
DynamicRenderScaling::FRDGScope DynamicTranslucencyResolutionScope(GraphBuilder, GDynamicTranslucencyResolution);
|
|
|
|
const TCHAR* OpName = nullptr;
|
|
FRHIBlendState* BlendState = nullptr;
|
|
FRDGTextureRef NewSceneColor = nullptr;
|
|
if (Operation == EOperation::UpscaleOnly)
|
|
{
|
|
check(!SceneColor.IsValid());
|
|
ensure(!TranslucencyTextures.ColorModulateTexture.IsValid());
|
|
|
|
OpName = TEXT("UpscaleTranslucency");
|
|
|
|
FRDGTextureDesc OutputDesc = FRDGTextureDesc::Create2D(
|
|
OutputViewport.Extent,
|
|
PF_FloatRGBA,
|
|
FClearValueBinding::Black,
|
|
TexCreate_RenderTargetable | TexCreate_ShaderResource);
|
|
|
|
NewSceneColor = GraphBuilder.CreateTexture(
|
|
OutputDesc,
|
|
bPostMotionBlur ? TEXT("PostMotionBlurTranslucency.SceneColor") : TEXT("PostDOFTranslucency.SceneColor"));
|
|
}
|
|
else if (Operation == EOperation::ComposeToExistingSceneColor)
|
|
{
|
|
check(SceneColor.IsValid());
|
|
ensure(!TranslucencyTextures.ColorModulateTexture.IsValid());
|
|
|
|
OpName = TEXT("ComposeTranslucencyToExistingColor");
|
|
BlendState = TStaticBlendState<CW_RGB, BO_Add, BF_One, BF_SourceAlpha>::GetRHI();
|
|
|
|
ensure(SceneColor.Texture->Desc.Flags & TexCreate_RenderTargetable);
|
|
NewSceneColor = SceneColor.Texture;
|
|
}
|
|
else if (Operation == EOperation::ComposeToNewSceneColor)
|
|
{
|
|
check(SceneColor.IsValid());
|
|
|
|
OpName = TEXT("ComposeTranslucencyToNewSceneColor");
|
|
|
|
FRDGTextureDesc OutputDesc = FRDGTextureDesc::Create2D(
|
|
OutputViewport.Extent,
|
|
OutputPixelFormat != PF_Unknown ? OutputPixelFormat : SceneColor.Texture->Desc.Format,
|
|
FClearValueBinding::Black,
|
|
TexCreate_RenderTargetable | TexCreate_ShaderResource);
|
|
|
|
NewSceneColor = GraphBuilder.CreateTexture(
|
|
OutputDesc,
|
|
bPostMotionBlur ? TEXT("PostMotionBlurTranslucency.SceneColor") : TEXT("PostDOFTranslucency.SceneColor"));
|
|
}
|
|
else
|
|
{
|
|
unimplemented();
|
|
}
|
|
|
|
const FVector2f SeparateTranslucencyExtentInv = FVector2f(1.0f, 1.0f) / FVector2f(TranslucencyViewport.Extent);
|
|
|
|
const bool bScaleSeparateTranslucency = OutputViewport.Rect.Size() != TranslucencyTextures.ViewRect.Size();
|
|
const float DownsampleScale = float(TranslucencyTextures.ViewRect.Width()) / float(OutputViewport.Rect.Width());
|
|
const bool DepthUpscampling = (
|
|
bScaleSeparateTranslucency &&
|
|
TranslucencyTextures.DepthTexture.IsValid() &&
|
|
SceneDepth.IsValid() &&
|
|
FMath::IsNearlyEqual(DownsampleScale, 0.5f) &&
|
|
GSeparateTranslucencyUpsampleMode > 0);
|
|
|
|
FScreenTransform SvPositionToViewportUV = FScreenTransform::SvPositionToViewportUV(OutputViewport.Rect);
|
|
|
|
FComposeSeparateTranslucencyPS::FParameters* PassParameters = GraphBuilder.AllocParameters<FComposeSeparateTranslucencyPS::FParameters>();
|
|
PassParameters->ScreenPosToSceneColorUV = SvPositionToViewportUV * FScreenTransform::ChangeTextureBasisFromTo(
|
|
SceneColorViewport, FScreenTransform::ETextureBasis::ViewportUV, FScreenTransform::ETextureBasis::TextureUV);
|
|
PassParameters->ScreenPosToSeparateTranslucencyUV = SvPositionToViewportUV * FScreenTransform::ChangeTextureBasisFromTo(
|
|
TranslucencyViewport, FScreenTransform::ETextureBasis::ViewportUV, FScreenTransform::ETextureBasis::TextureUV);
|
|
|
|
PassParameters->SeparateTranslucencyUVMin = (FVector2f(TranslucencyViewport.Rect.Min) + FVector2f(0.5f, 0.5f)) * SeparateTranslucencyExtentInv;
|
|
PassParameters->SeparateTranslucencyUVMax = (FVector2f(TranslucencyViewport.Rect.Max) - FVector2f(0.5f, 0.5f)) * SeparateTranslucencyExtentInv;
|
|
PassParameters->SeparateTranslucencyExtentInverse = SeparateTranslucencyExtentInv;
|
|
|
|
PassParameters->SceneColorTexture = Operation == EOperation::ComposeToNewSceneColor
|
|
? SceneColor.Texture
|
|
: GraphBuilder.RegisterExternalTexture(GSystemTextures.BlackAlphaOneDummy);
|
|
PassParameters->SceneColorSampler = TStaticSamplerState<SF_Point>::GetRHI();
|
|
|
|
PassParameters->SeparateTranslucencyPointTexture = SeparateTranslucencyTexture;
|
|
PassParameters->SeparateTranslucencyPointSampler = TStaticSamplerState<SF_Point>::GetRHI();
|
|
|
|
PassParameters->SeparateModulationPointTexture = SeparateModulationTexture;
|
|
PassParameters->SeparateModulationPointSampler = TStaticSamplerState<SF_Point>::GetRHI();
|
|
|
|
PassParameters->SeparateTranslucencyBilinearTexture = SeparateTranslucencyTexture;
|
|
PassParameters->SeparateTranslucencyBilinearSampler = TStaticSamplerState<SF_Bilinear>::GetRHI();
|
|
|
|
PassParameters->SeparateModulationBilinearTexture = SeparateModulationTexture;
|
|
PassParameters->SeparateModulationBilinearSampler = TStaticSamplerState<SF_Bilinear>::GetRHI();
|
|
|
|
PassParameters->ViewUniformBuffer = View.ViewUniformBuffer;
|
|
|
|
if (Operation == EOperation::ComposeToExistingSceneColor)
|
|
{
|
|
PassParameters->RenderTargets[0] = FRenderTargetBinding(NewSceneColor, ERenderTargetLoadAction::ELoad);
|
|
}
|
|
else
|
|
{
|
|
PassParameters->RenderTargets[0] = FRenderTargetBinding(NewSceneColor, ERenderTargetLoadAction::ENoAction);
|
|
}
|
|
|
|
if (DepthUpscampling)
|
|
{
|
|
PassParameters->LowResDepthTexture = TranslucencyTextures.GetDepthForRead(GraphBuilder);
|
|
PassParameters->LowResDepthSampler = TStaticSamplerState<SF_Point>::GetRHI();
|
|
PassParameters->FullResDepthTexture = SceneDepth.Texture;
|
|
PassParameters->FullResDepthSampler = TStaticSamplerState<SF_Point>::GetRHI();
|
|
}
|
|
|
|
FComposeSeparateTranslucencyPS::FPermutationDomain PermutationVector;
|
|
PermutationVector.Set<FComposeSeparateTranslucencyPS::FNearestDepthNeighborUpsampling>(DepthUpscampling);
|
|
|
|
TShaderMapRef<FComposeSeparateTranslucencyPS> PixelShader(View.ShaderMap, PermutationVector);
|
|
FPixelShaderUtils::AddFullscreenPass(
|
|
GraphBuilder,
|
|
View.ShaderMap,
|
|
RDG_EVENT_NAME(
|
|
"%s(%s%s%s) %dx%d -> %dx%d",
|
|
OpName,
|
|
kTranslucencyPassName[int32(TranslucencyTextures.Pass)],
|
|
bApplyModulateOnly ? TEXT(" ModulateOnly") : TEXT(""),
|
|
DepthUpscampling ? TEXT(" DepthUpscampling") : TEXT(""),
|
|
TranslucencyTextures.ViewRect.Width(), TranslucencyTextures.ViewRect.Height(),
|
|
OutputViewport.Rect.Width(), OutputViewport.Rect.Height()),
|
|
PixelShader,
|
|
PassParameters,
|
|
OutputViewport.Rect,
|
|
BlendState);
|
|
|
|
return FScreenPassTexture(NewSceneColor, OutputViewport.Rect);
|
|
}
|
|
|
|
static void AddUpsampleResponsiveAAPass(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FViewInfo& View,
|
|
FScreenPassTexture DownsampledTranslucencyDepth,
|
|
FRDGTextureRef OutputDepthTexture)
|
|
{
|
|
FTranslucencyUpsampleResponsiveAAPS::FParameters* PassParameters = GraphBuilder.AllocParameters<FTranslucencyUpsampleResponsiveAAPS::FParameters>();
|
|
PassParameters->StencilPixelPosMin = DownsampledTranslucencyDepth.ViewRect.Min;
|
|
PassParameters->StencilPixelPosMax = DownsampledTranslucencyDepth.ViewRect.Max - 1;
|
|
PassParameters->SvPositionToStencilPixelCoord = (FScreenTransform::Identity - View.ViewRect.Min) * (FVector2f(DownsampledTranslucencyDepth.ViewRect.Size()) / FVector2f(View.ViewRect.Size())) + DownsampledTranslucencyDepth.ViewRect.Min;
|
|
PassParameters->StencilMask = STENCIL_TEMPORAL_RESPONSIVE_AA_MASK;
|
|
PassParameters->StencilTexture = GraphBuilder.CreateSRV(FRDGTextureSRVDesc::CreateWithPixelFormat(DownsampledTranslucencyDepth.Texture, PF_X24_G8));
|
|
PassParameters->RenderTargets.DepthStencil = FDepthStencilBinding(OutputDepthTexture, ERenderTargetLoadAction::ELoad, ERenderTargetLoadAction::ELoad, FExclusiveDepthStencil::DepthNop_StencilWrite);
|
|
|
|
TShaderMapRef<FScreenVS> VertexShader(View.ShaderMap);
|
|
TShaderMapRef<FTranslucencyUpsampleResponsiveAAPS> PixelShader(View.ShaderMap);
|
|
|
|
FRHIDepthStencilState* DepthStencilState = TStaticDepthStencilState<false, CF_Always,
|
|
true, CF_Always, SO_Keep, SO_Keep, SO_Replace,
|
|
false, CF_Always, SO_Keep, SO_Keep, SO_Keep,
|
|
0x00, STENCIL_TEMPORAL_RESPONSIVE_AA_MASK>::GetRHI();
|
|
FRHIBlendState* BlendState = TStaticBlendState<CW_NONE>::GetRHI();
|
|
|
|
const FScreenPassPipelineState PipelineState(VertexShader, PixelShader, BlendState, DepthStencilState, /* StencilRef = */ STENCIL_TEMPORAL_RESPONSIVE_AA_MASK);
|
|
|
|
ClearUnusedGraphResources(PixelShader, PassParameters);
|
|
GraphBuilder.AddPass(
|
|
RDG_EVENT_NAME("UpsampleResponsiveAA %dx%d -> %dx%d",
|
|
DownsampledTranslucencyDepth.ViewRect.Width(), DownsampledTranslucencyDepth.ViewRect.Height(),
|
|
View.ViewRect.Width(), View.ViewRect.Height()),
|
|
PassParameters,
|
|
ERDGPassFlags::Raster,
|
|
[&View, PipelineState, PixelShader, PassParameters](FRHICommandList& RHICmdList)
|
|
{
|
|
FScreenPassTextureViewport OutputViewport(PassParameters->RenderTargets.DepthStencil.GetTexture()->Desc.Extent, View.ViewRect);
|
|
DrawScreenPass(RHICmdList, View, OutputViewport, OutputViewport, PipelineState, EScreenPassDrawFlags::None, [&](FRHICommandList&)
|
|
{
|
|
SetShaderParameters(RHICmdList, PixelShader, PixelShader.GetPixelShader(), *PassParameters);
|
|
});
|
|
});
|
|
}
|
|
|
|
bool FSceneRenderer::ShouldRenderTranslucency() const
|
|
{
|
|
return ActiveViewFamily->EngineShowFlags.Translucency
|
|
&& !ActiveViewFamily->EngineShowFlags.VisualizeLightCulling
|
|
&& !ActiveViewFamily->UseDebugViewPS();
|
|
}
|
|
|
|
bool FSceneRenderer::ShouldRenderTranslucency(ETranslucencyPass::Type TranslucencyPass) const
|
|
{
|
|
extern int32 GLightShaftRenderAfterDOF;
|
|
|
|
// Change this condition to control where simple elements should be rendered.
|
|
if (IsMainTranslucencyPass(TranslucencyPass))
|
|
{
|
|
for (const FViewInfo& View : Views)
|
|
{
|
|
if (View.bHasTranslucentViewMeshElements || View.SimpleElementCollector.BatchedElements.HasPrimsToDraw())
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
|
|
// If lightshafts are rendered in low res, we must reset the offscreen buffer in case is was also used in TPT_StandardTranslucency.
|
|
if (GLightShaftRenderAfterDOF && TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterDOF)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
for (const FViewInfo& View : Views)
|
|
{
|
|
if (View.TranslucentPrimCount.Num(TranslucencyPass) > 0)
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
FScreenPassTextureViewport FSeparateTranslucencyDimensions::GetInstancedStereoViewport(const FViewInfo& View) const
|
|
{
|
|
FIntRect ViewRect = View.ViewRect;
|
|
if (View.IsInstancedStereoPass() && !View.bIsMultiViewEnabled)
|
|
{
|
|
ViewRect.Max.X = ViewRect.Min.X + View.InstancedStereoWidth;
|
|
}
|
|
ViewRect = GetScaledRect(ViewRect, Scale);
|
|
return FScreenPassTextureViewport(Extent, ViewRect);
|
|
}
|
|
|
|
void SetupPostMotionBlurTranslucencyViewParameters(const FViewInfo& View, FViewUniformShaderParameters& Parameters)
|
|
{
|
|
// post-motionblur pass without down-sampling requires no Temporal AA jitter
|
|
FBox VolumeBounds[TVC_MAX];
|
|
FViewMatrices ModifiedViewMatrices = View.ViewMatrices;
|
|
ModifiedViewMatrices.HackRemoveTemporalAAProjectionJitter();
|
|
|
|
Parameters = *View.CachedViewUniformShaderParameters;
|
|
View.SetupUniformBufferParameters(ModifiedViewMatrices, ModifiedViewMatrices, VolumeBounds, TVC_MAX, Parameters);
|
|
}
|
|
|
|
FRDGTextureMSAA CreatePostDOFTranslucentTexture(
|
|
FRDGBuilder& GraphBuilder,
|
|
ETranslucencyPass::Type TranslucencyPass,
|
|
FSeparateTranslucencyDimensions& SeparateTranslucencyDimensions,
|
|
bool bIsModulate,
|
|
EShaderPlatform ShaderPlatform)
|
|
{
|
|
const bool bNeedUAV = SeparateTranslucencyDimensions.NumSamples == 1 && OIT::IsEnabled(EOITSortingType::SortedPixels, ShaderPlatform);
|
|
const FRDGTextureDesc Desc = FRDGTextureDesc::Create2D(
|
|
SeparateTranslucencyDimensions.Extent,
|
|
bIsModulate ? PF_FloatR11G11B10 : PF_FloatRGBA,
|
|
bIsModulate ? FClearValueBinding::White : FClearValueBinding::Black,
|
|
TexCreate_RenderTargetable | TexCreate_ShaderResource | (bNeedUAV ? TexCreate_UAV : TexCreate_None),
|
|
1,
|
|
SeparateTranslucencyDimensions.NumSamples);
|
|
|
|
return CreateTextureMSAA(
|
|
GraphBuilder, Desc,
|
|
kTranslucencyColorTextureName[int32(TranslucencyPass)],
|
|
bIsModulate ? GFastVRamConfig.SeparateTranslucencyModulate : GFastVRamConfig.SeparateTranslucency);
|
|
}
|
|
|
|
void SetupDownsampledTranslucencyViewParameters(
|
|
const FViewInfo& View,
|
|
FIntPoint TextureExtent,
|
|
FIntRect ViewRect,
|
|
ETranslucencyPass::Type TranslucencyPass,
|
|
FViewUniformShaderParameters& DownsampledTranslucencyViewParameters)
|
|
{
|
|
DownsampledTranslucencyViewParameters = *View.CachedViewUniformShaderParameters;
|
|
|
|
FViewMatrices ViewMatrices = View.ViewMatrices;
|
|
FViewMatrices PrevViewMatrices = View.PrevViewInfo.ViewMatrices;
|
|
if (TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterMotionBlur)
|
|
{
|
|
// Remove jitter from this pass
|
|
ViewMatrices.HackRemoveTemporalAAProjectionJitter();
|
|
PrevViewMatrices.HackRemoveTemporalAAProjectionJitter();
|
|
}
|
|
|
|
// Update the parts of DownsampledTranslucencyParameters which are dependent on the buffer size and view rect
|
|
View.SetupViewRectUniformBufferParameters(
|
|
DownsampledTranslucencyViewParameters,
|
|
TextureExtent,
|
|
ViewRect,
|
|
ViewMatrices,
|
|
PrevViewMatrices);
|
|
|
|
// instead of using the expected ratio, use the actual dimensions to avoid rounding errors
|
|
float ActualDownsampleX = float(ViewRect.Width()) / float(View.ViewRect.Width());
|
|
float ActualDownsampleY = float(ViewRect.Height()) / float(View.ViewRect.Height());
|
|
DownsampledTranslucencyViewParameters.LightProbeSizeRatioAndInvSizeRatio = FVector4f(ActualDownsampleX, ActualDownsampleY, 1.0f / ActualDownsampleX, 1.0f / ActualDownsampleY);
|
|
|
|
DownsampledTranslucencyViewParameters.BufferToSceneTextureScale = FVector2f(1.0f / ActualDownsampleX, 1.0f / ActualDownsampleY);
|
|
}
|
|
|
|
TRDGUniformBufferRef<FTranslucentBasePassUniformParameters> CreateTranslucentBasePassUniformBuffer(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FScene* Scene,
|
|
const FViewInfo& View,
|
|
const int32 ViewIndex,
|
|
const FTranslucencyLightingVolumeTextures& TranslucencyLightingVolumeTextures,
|
|
FRDGTextureRef SceneColorCopyTexture,
|
|
const ESceneTextureSetupMode SceneTextureSetupMode,
|
|
bool bLumenGIEnabled,
|
|
const FOITData& OITData)
|
|
{
|
|
FTranslucentBasePassUniformParameters& BasePassParameters = *GraphBuilder.AllocParameters<FTranslucentBasePassUniformParameters>();
|
|
|
|
const auto GetRDG = [&](const TRefCountPtr<IPooledRenderTarget>& PooledRenderTarget, ERDGTextureFlags Flags = ERDGTextureFlags::None)
|
|
{
|
|
return GraphBuilder.RegisterExternalTexture(PooledRenderTarget, Flags);
|
|
};
|
|
|
|
SetupSharedBasePassParameters(GraphBuilder, View, bLumenGIEnabled, BasePassParameters.Shared);
|
|
SetupSceneTextureUniformParameters(GraphBuilder, View.GetSceneTexturesChecked(), View.FeatureLevel, SceneTextureSetupMode, BasePassParameters.SceneTextures);
|
|
Strata::BindStrataForwardPasslUniformParameters(GraphBuilder, View, BasePassParameters.Strata);
|
|
|
|
const FLightSceneProxy* SelectedForwardDirectionalLightProxy = View.ForwardLightingResources.SelectedForwardDirectionalLightProxy;
|
|
SetupLightCloudTransmittanceParameters(GraphBuilder, Scene, View, SelectedForwardDirectionalLightProxy ? SelectedForwardDirectionalLightProxy->GetLightSceneInfo() : nullptr, BasePassParameters.ForwardDirLightCloudShadow);
|
|
|
|
const FRDGSystemTextures& SystemTextures = FRDGSystemTextures::Get(GraphBuilder);
|
|
|
|
// Material SSR
|
|
{
|
|
float PrevSceneColorPreExposureInvValue = 1.0f / View.PreExposure;
|
|
|
|
if (View.HZB)
|
|
{
|
|
BasePassParameters.HZBTexture = View.HZB;
|
|
BasePassParameters.HZBSampler = TStaticSamplerState<SF_Point, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
|
|
FRDGTextureRef PrevSceneColorTexture = SystemTextures.Black;
|
|
FIntRect PrevSceneColorViewRect = FIntRect(0, 0, 1, 1);
|
|
|
|
if (View.PrevViewInfo.CustomSSRInput.IsValid())
|
|
{
|
|
PrevSceneColorTexture = GetRDG(View.PrevViewInfo.CustomSSRInput.RT[0]);
|
|
PrevSceneColorViewRect = View.PrevViewInfo.CustomSSRInput.ViewportRect;
|
|
PrevSceneColorPreExposureInvValue = 1.0f / View.PrevViewInfo.SceneColorPreExposure;
|
|
}
|
|
else if (View.PrevViewInfo.TemporalAAHistory.IsValid())
|
|
{
|
|
PrevSceneColorTexture = GetRDG(View.PrevViewInfo.TemporalAAHistory.RT[0]);
|
|
PrevSceneColorViewRect = View.PrevViewInfo.TemporalAAHistory.ViewportRect;
|
|
PrevSceneColorPreExposureInvValue = 1.0f / View.PrevViewInfo.SceneColorPreExposure;
|
|
}
|
|
else if (View.PrevViewInfo.ScreenSpaceRayTracingInput.IsValid())
|
|
{
|
|
PrevSceneColorTexture = GetRDG(View.PrevViewInfo.ScreenSpaceRayTracingInput);
|
|
PrevSceneColorViewRect = View.PrevViewInfo.ViewRect;
|
|
PrevSceneColorPreExposureInvValue = 1.0f / View.PrevViewInfo.SceneColorPreExposure;
|
|
}
|
|
|
|
BasePassParameters.PrevSceneColor = PrevSceneColorTexture;
|
|
BasePassParameters.PrevSceneColorSampler = TStaticSamplerState<SF_Bilinear, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
|
|
FScreenPassTextureViewportParameters PrevSceneColorParameters = GetScreenPassTextureViewportParameters(FScreenPassTextureViewport(PrevSceneColorTexture, PrevSceneColorViewRect));
|
|
BasePassParameters.PrevSceneColorBilinearUVMin = PrevSceneColorParameters.UVViewportBilinearMin;
|
|
BasePassParameters.PrevSceneColorBilinearUVMax = PrevSceneColorParameters.UVViewportBilinearMax;
|
|
|
|
const FVector2f HZBUvFactor(
|
|
float(View.ViewRect.Width()) / float(2 * View.HZBMipmap0Size.X),
|
|
float(View.ViewRect.Height()) / float(2 * View.HZBMipmap0Size.Y)
|
|
);
|
|
const FVector4f HZBUvFactorAndInvFactorValue(
|
|
HZBUvFactor.X,
|
|
HZBUvFactor.Y,
|
|
1.0f / HZBUvFactor.X,
|
|
1.0f / HZBUvFactor.Y
|
|
);
|
|
|
|
BasePassParameters.HZBUvFactorAndInvFactor = HZBUvFactorAndInvFactorValue;
|
|
}
|
|
else
|
|
{
|
|
BasePassParameters.HZBTexture = SystemTextures.Black;
|
|
BasePassParameters.HZBSampler = TStaticSamplerState<SF_Point, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
BasePassParameters.PrevSceneColor = SystemTextures.Black;
|
|
BasePassParameters.PrevSceneColorSampler = TStaticSamplerState<SF_Bilinear, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
BasePassParameters.PrevSceneColorBilinearUVMin = FVector2f(0.0f, 0.0f);
|
|
BasePassParameters.PrevSceneColorBilinearUVMax = FVector2f(1.0f, 1.0f);
|
|
}
|
|
|
|
BasePassParameters.ApplyVolumetricCloudOnTransparent = 0.0f;
|
|
BasePassParameters.VolumetricCloudColor = nullptr;
|
|
BasePassParameters.VolumetricCloudDepth = nullptr;
|
|
BasePassParameters.VolumetricCloudColorSampler = TStaticSamplerState<SF_Bilinear, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
BasePassParameters.VolumetricCloudDepthSampler = TStaticSamplerState<SF_Bilinear, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
if (IsVolumetricRenderTargetEnabled() && View.ViewState)
|
|
{
|
|
TRefCountPtr<IPooledRenderTarget> VolumetricReconstructRT = View.ViewState->VolumetricCloudRenderTarget.GetDstVolumetricReconstructRT();
|
|
if (VolumetricReconstructRT.IsValid())
|
|
{
|
|
TRefCountPtr<IPooledRenderTarget> VolumetricReconstructRTDepth = View.ViewState->VolumetricCloudRenderTarget.GetDstVolumetricReconstructRTDepth();
|
|
|
|
BasePassParameters.VolumetricCloudColor = VolumetricReconstructRT->GetRHI();
|
|
BasePassParameters.VolumetricCloudDepth = VolumetricReconstructRTDepth->GetRHI();
|
|
BasePassParameters.ApplyVolumetricCloudOnTransparent = 1.0f;
|
|
}
|
|
}
|
|
if (BasePassParameters.VolumetricCloudColor == nullptr)
|
|
{
|
|
BasePassParameters.VolumetricCloudColor = GSystemTextures.BlackAlphaOneDummy->GetRHI();
|
|
BasePassParameters.VolumetricCloudDepth = GSystemTextures.BlackDummy->GetRHI();
|
|
}
|
|
|
|
FIntPoint ViewportOffset = View.ViewRect.Min;
|
|
FIntPoint ViewportExtent = View.ViewRect.Size();
|
|
|
|
// Scene render targets might not exist yet; avoids NaNs.
|
|
FIntPoint EffectiveBufferSize = View.GetSceneTexturesConfig().Extent;
|
|
EffectiveBufferSize.X = FMath::Max(EffectiveBufferSize.X, 1);
|
|
EffectiveBufferSize.Y = FMath::Max(EffectiveBufferSize.Y, 1);
|
|
|
|
if (View.PrevViewInfo.CustomSSRInput.IsValid())
|
|
{
|
|
ViewportOffset = View.PrevViewInfo.CustomSSRInput.ViewportRect.Min;
|
|
ViewportExtent = View.PrevViewInfo.CustomSSRInput.ViewportRect.Size();
|
|
EffectiveBufferSize = View.PrevViewInfo.CustomSSRInput.RT[0]->GetDesc().Extent;
|
|
}
|
|
else if (View.PrevViewInfo.TemporalAAHistory.IsValid())
|
|
{
|
|
ViewportOffset = View.PrevViewInfo.TemporalAAHistory.ViewportRect.Min;
|
|
ViewportExtent = View.PrevViewInfo.TemporalAAHistory.ViewportRect.Size();
|
|
EffectiveBufferSize = View.PrevViewInfo.TemporalAAHistory.RT[0]->GetDesc().Extent;
|
|
}
|
|
else if (View.PrevViewInfo.ScreenSpaceRayTracingInput.IsValid())
|
|
{
|
|
ViewportOffset = View.PrevViewInfo.ViewRect.Min;
|
|
ViewportExtent = View.PrevViewInfo.ViewRect.Size();
|
|
EffectiveBufferSize = View.PrevViewInfo.ScreenSpaceRayTracingInput->GetDesc().Extent;
|
|
}
|
|
|
|
FVector2f InvBufferSize(1.0f / float(EffectiveBufferSize.X), 1.0f / float(EffectiveBufferSize.Y));
|
|
|
|
FVector4f ScreenPosToPixelValue(
|
|
ViewportExtent.X * 0.5f * InvBufferSize.X,
|
|
-ViewportExtent.Y * 0.5f * InvBufferSize.Y,
|
|
(ViewportExtent.X * 0.5f + ViewportOffset.X) * InvBufferSize.X,
|
|
(ViewportExtent.Y * 0.5f + ViewportOffset.Y) * InvBufferSize.Y);
|
|
|
|
BasePassParameters.PrevScreenPositionScaleBias = ScreenPosToPixelValue;
|
|
BasePassParameters.PrevSceneColorPreExposureInv = PrevSceneColorPreExposureInvValue;
|
|
BasePassParameters.SSRQuality = ShouldRenderTranslucencyScreenSpaceReflections(View) ? GetSSRQuality() : 0;
|
|
}
|
|
|
|
// Translucency Lighting Volume
|
|
BasePassParameters.TranslucencyLightingVolume = GetTranslucencyLightingVolumeParameters(GraphBuilder, TranslucencyLightingVolumeTextures, View);
|
|
BasePassParameters.LumenParameters = GetLumenTranslucencyLightingParameters(GraphBuilder, View.LumenTranslucencyGIVolume, View.LumenFrontLayerTranslucency);
|
|
|
|
const bool bLumenGIHandlingSkylight = bLumenGIEnabled
|
|
&& BasePassParameters.LumenParameters.TranslucencyGIGridSize.Z > 0;
|
|
|
|
BasePassParameters.Shared.UseBasePassSkylight = bLumenGIHandlingSkylight ? 0 : 1;
|
|
|
|
BasePassParameters.SceneColorCopyTexture = SystemTextures.Black;
|
|
BasePassParameters.SceneColorCopySampler = TStaticSamplerState<SF_Bilinear, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
|
|
if (SceneColorCopyTexture)
|
|
{
|
|
BasePassParameters.SceneColorCopyTexture = SceneColorCopyTexture;
|
|
}
|
|
|
|
BasePassParameters.EyeAdaptationTexture = GetEyeAdaptationTexture(GraphBuilder, View);
|
|
BasePassParameters.PreIntegratedGFTexture = GSystemTextures.PreintegratedGF->GetRHI();
|
|
BasePassParameters.PreIntegratedGFSampler = TStaticSamplerState<SF_Bilinear, AM_Clamp, AM_Clamp, AM_Clamp>::GetRHI();
|
|
|
|
OIT::SetOITParameters(GraphBuilder, View, BasePassParameters.OIT, OITData);
|
|
|
|
return GraphBuilder.CreateUniformBuffer(&BasePassParameters);
|
|
}
|
|
|
|
TRDGUniformBufferRef<FTranslucentBasePassUniformParameters> CreateTranslucentBasePassUniformBuffer(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FScene* Scene,
|
|
const FViewInfo& View,
|
|
const int32 ViewIndex,
|
|
const FTranslucencyLightingVolumeTextures& TranslucencyLightingVolumeTextures,
|
|
FRDGTextureRef SceneColorCopyTexture,
|
|
const ESceneTextureSetupMode SceneTextureSetupMode,
|
|
bool bLumenGIEnabled)
|
|
{
|
|
FOITData OITData = OIT::CreateOITData(GraphBuilder, View, OITPass_None);
|
|
return CreateTranslucentBasePassUniformBuffer(
|
|
GraphBuilder,
|
|
Scene,
|
|
View,
|
|
ViewIndex,
|
|
TranslucencyLightingVolumeTextures,
|
|
SceneColorCopyTexture,
|
|
SceneTextureSetupMode,
|
|
bLumenGIEnabled,
|
|
OITData);
|
|
}
|
|
|
|
static FViewShaderParameters GetSeparateTranslucencyViewParameters(const FViewInfo& View, FIntPoint TextureExtent, float ViewportScale, ETranslucencyPass::Type TranslucencyPass)
|
|
{
|
|
FViewShaderParameters ViewParameters;
|
|
const bool bIsPostMotionBlur = (TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterMotionBlur);
|
|
|
|
if (ViewportScale == 1.0f && !bIsPostMotionBlur)
|
|
{
|
|
// We can use the existing view uniform buffers if no downsampling is required and is not in the post-motionblur pass
|
|
ViewParameters = View.GetShaderParameters();
|
|
}
|
|
else if (bIsPostMotionBlur)
|
|
{
|
|
// Full-scale post-motionblur pass
|
|
FViewUniformShaderParameters ViewUniformParameters;
|
|
SetupPostMotionBlurTranslucencyViewParameters(View, ViewUniformParameters);
|
|
|
|
ViewParameters.View = TUniformBufferRef<FViewUniformShaderParameters>::CreateUniformBufferImmediate(ViewUniformParameters, UniformBuffer_SingleFrame);
|
|
|
|
if (const FViewInfo* InstancedView = View.GetInstancedView())
|
|
{
|
|
SetupPostMotionBlurTranslucencyViewParameters(*InstancedView, ViewUniformParameters);
|
|
|
|
ViewParameters.InstancedView = TUniformBufferRef<FInstancedViewUniformShaderParameters>::CreateUniformBufferImmediate(
|
|
reinterpret_cast<const FInstancedViewUniformShaderParameters&>(ViewUniformParameters),
|
|
UniformBuffer_SingleFrame);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Downsampled post-DOF or post-motionblur pass
|
|
FViewUniformShaderParameters DownsampledTranslucencyViewParameters;
|
|
SetupDownsampledTranslucencyViewParameters(
|
|
View,
|
|
TextureExtent,
|
|
GetScaledRect(View.ViewRect, ViewportScale),
|
|
TranslucencyPass,
|
|
DownsampledTranslucencyViewParameters);
|
|
|
|
ViewParameters.View = TUniformBufferRef<FViewUniformShaderParameters>::CreateUniformBufferImmediate(DownsampledTranslucencyViewParameters, UniformBuffer_SingleFrame);
|
|
|
|
if (const FViewInfo* InstancedView = View.GetInstancedView())
|
|
{
|
|
SetupDownsampledTranslucencyViewParameters(
|
|
*InstancedView,
|
|
TextureExtent,
|
|
GetScaledRect(InstancedView->ViewRect, ViewportScale),
|
|
TranslucencyPass,
|
|
DownsampledTranslucencyViewParameters);
|
|
|
|
ViewParameters.InstancedView = TUniformBufferRef<FInstancedViewUniformShaderParameters>::CreateUniformBufferImmediate(
|
|
reinterpret_cast<const FInstancedViewUniformShaderParameters&>(DownsampledTranslucencyViewParameters),
|
|
UniformBuffer_SingleFrame);
|
|
}
|
|
}
|
|
|
|
return ViewParameters;
|
|
}
|
|
|
|
static void RenderViewTranslucencyInner(
|
|
FRHICommandListImmediate& RHICmdList,
|
|
const FSceneRenderer& SceneRenderer,
|
|
const FViewInfo& View,
|
|
const FScreenPassTextureViewport Viewport,
|
|
const float ViewportScale,
|
|
ETranslucencyPass::Type TranslucencyPass,
|
|
FRDGParallelCommandListSet* ParallelCommandListSet,
|
|
const FInstanceCullingDrawParams& InstanceCullingDrawParams)
|
|
{
|
|
FMeshPassProcessorRenderState DrawRenderState;
|
|
if (TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterMotionBlur)
|
|
{
|
|
// No depth test in post-motionblur translucency
|
|
DrawRenderState.SetDepthStencilState(TStaticDepthStencilState<false, CF_Always>::GetRHI());
|
|
}
|
|
else
|
|
{
|
|
DrawRenderState.SetDepthStencilState(TStaticDepthStencilState<false, CF_DepthNearOrEqual>::GetRHI());
|
|
}
|
|
|
|
SceneRenderer.SetStereoViewport(RHICmdList, View, ViewportScale);
|
|
|
|
if (!View.Family->UseDebugViewPS())
|
|
{
|
|
QUICK_SCOPE_CYCLE_COUNTER(RenderTranslucencyParallel_Start_FDrawSortedTransAnyThreadTask);
|
|
|
|
const EMeshPass::Type MeshPass = TranslucencyPassToMeshPass(TranslucencyPass);
|
|
View.ParallelMeshDrawCommandPasses[MeshPass].DispatchDraw(ParallelCommandListSet, RHICmdList, &InstanceCullingDrawParams);
|
|
}
|
|
|
|
if (IsMainTranslucencyPass(TranslucencyPass))
|
|
{
|
|
if (ParallelCommandListSet)
|
|
{
|
|
ParallelCommandListSet->SetStateOnCommandList(RHICmdList);
|
|
}
|
|
|
|
View.SimpleElementCollector.DrawBatchedElements(RHICmdList, DrawRenderState, View, EBlendModeFilter::Translucent, SDPG_World);
|
|
View.SimpleElementCollector.DrawBatchedElements(RHICmdList, DrawRenderState, View, EBlendModeFilter::Translucent, SDPG_Foreground);
|
|
|
|
// editor and debug rendering
|
|
if (View.bHasTranslucentViewMeshElements)
|
|
{
|
|
{
|
|
QUICK_SCOPE_CYCLE_COUNTER(RenderTranslucencyParallel_SDPG_World);
|
|
|
|
DrawDynamicMeshPass(View, RHICmdList,
|
|
[&View, &DrawRenderState, TranslucencyPass](FDynamicPassMeshDrawListContext* DynamicMeshPassContext)
|
|
{
|
|
FBasePassMeshProcessor PassMeshProcessor(
|
|
View.Family->Scene->GetRenderScene(),
|
|
View.GetFeatureLevel(),
|
|
&View,
|
|
DrawRenderState,
|
|
DynamicMeshPassContext,
|
|
FBasePassMeshProcessor::EFlags::CanUseDepthStencil,
|
|
TranslucencyPass);
|
|
|
|
const uint64 DefaultBatchElementMask = ~0ull;
|
|
|
|
for (int32 MeshIndex = 0; MeshIndex < View.ViewMeshElements.Num(); MeshIndex++)
|
|
{
|
|
const FMeshBatch& MeshBatch = View.ViewMeshElements[MeshIndex];
|
|
PassMeshProcessor.AddMeshBatch(MeshBatch, DefaultBatchElementMask, nullptr);
|
|
}
|
|
});
|
|
}
|
|
|
|
{
|
|
QUICK_SCOPE_CYCLE_COUNTER(RenderTranslucencyParallel_SDPG_Foreground);
|
|
|
|
DrawDynamicMeshPass(View, RHICmdList,
|
|
[&View, &DrawRenderState, TranslucencyPass](FDynamicPassMeshDrawListContext* DynamicMeshPassContext)
|
|
{
|
|
FBasePassMeshProcessor PassMeshProcessor(
|
|
View.Family->Scene->GetRenderScene(),
|
|
View.GetFeatureLevel(),
|
|
&View,
|
|
DrawRenderState,
|
|
DynamicMeshPassContext,
|
|
FBasePassMeshProcessor::EFlags::CanUseDepthStencil,
|
|
TranslucencyPass);
|
|
|
|
const uint64 DefaultBatchElementMask = ~0ull;
|
|
|
|
for (int32 MeshIndex = 0; MeshIndex < View.TopViewMeshElements.Num(); MeshIndex++)
|
|
{
|
|
const FMeshBatch& MeshBatch = View.TopViewMeshElements[MeshIndex];
|
|
PassMeshProcessor.AddMeshBatch(MeshBatch, DefaultBatchElementMask, nullptr);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
if (ParallelCommandListSet)
|
|
{
|
|
RHICmdList.EndRenderPass();
|
|
}
|
|
}
|
|
}
|
|
|
|
BEGIN_SHADER_PARAMETER_STRUCT(FTranslucentBasePassParameters, )
|
|
SHADER_PARAMETER_STRUCT_INCLUDE(FViewShaderParameters, View)
|
|
SHADER_PARAMETER_STRUCT_REF(FReflectionCaptureShaderData, ReflectionCapture)
|
|
SHADER_PARAMETER_RDG_UNIFORM_BUFFER(FTranslucentBasePassUniformParameters, BasePass)
|
|
SHADER_PARAMETER_STRUCT_INCLUDE(FInstanceCullingDrawParams, InstanceCullingDrawParams)
|
|
SHADER_PARAMETER_STRUCT_INCLUDE(FVirtualShadowMapSamplingParameters, VirtualShadowMapSamplingParameters)
|
|
RENDER_TARGET_BINDING_SLOTS()
|
|
END_SHADER_PARAMETER_STRUCT()
|
|
|
|
static void RenderTranslucencyViewInner(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FSceneRenderer& SceneRenderer,
|
|
FViewInfo& View,
|
|
FScreenPassTextureViewport Viewport,
|
|
float ViewportScale,
|
|
FRDGTextureMSAA SceneColorTexture,
|
|
ERenderTargetLoadAction SceneColorLoadAction,
|
|
FRDGTextureRef SceneDepthTexture,
|
|
TRDGUniformBufferRef<FTranslucentBasePassUniformParameters> BasePassParameters,
|
|
ETranslucencyPass::Type TranslucencyPass,
|
|
bool bResolveColorTexture,
|
|
bool bRenderInParallel,
|
|
FInstanceCullingManager& InstanceCullingManager)
|
|
{
|
|
if (!View.ShouldRenderView())
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (SceneColorLoadAction == ERenderTargetLoadAction::EClear)
|
|
{
|
|
AddClearRenderTargetPass(GraphBuilder, SceneColorTexture.Target);
|
|
}
|
|
|
|
View.BeginRenderView();
|
|
|
|
FTranslucentBasePassParameters* PassParameters = GraphBuilder.AllocParameters<FTranslucentBasePassParameters>();
|
|
PassParameters->View = GetSeparateTranslucencyViewParameters(View, Viewport.Extent, ViewportScale, TranslucencyPass);
|
|
PassParameters->ReflectionCapture = View.ReflectionCaptureUniformBuffer;
|
|
PassParameters->BasePass = BasePassParameters;
|
|
PassParameters->VirtualShadowMapSamplingParameters = SceneRenderer.ActiveViewFamily->VirtualShadowMapArray.GetSamplingParameters(GraphBuilder);
|
|
PassParameters->RenderTargets[0] = FRenderTargetBinding(SceneColorTexture.Target, ERenderTargetLoadAction::ELoad);
|
|
if (TranslucencyPass != ETranslucencyPass::TPT_TranslucencyAfterMotionBlur)
|
|
{
|
|
PassParameters->RenderTargets.DepthStencil = FDepthStencilBinding(SceneDepthTexture, ERenderTargetLoadAction::ELoad, ERenderTargetLoadAction::ELoad, FExclusiveDepthStencil::DepthRead_StencilWrite);
|
|
}
|
|
PassParameters->RenderTargets.ShadingRateTexture = GVRSImageManager.GetVariableRateShadingImage(GraphBuilder, *SceneRenderer.ActiveViewFamily, nullptr);
|
|
PassParameters->RenderTargets.ResolveRect = FResolveRect(Viewport.Rect);
|
|
|
|
const EMeshPass::Type MeshPass = TranslucencyPassToMeshPass(TranslucencyPass);
|
|
View.ParallelMeshDrawCommandPasses[MeshPass].BuildRenderingCommands(GraphBuilder, SceneRenderer.Scene->GPUScene, PassParameters->InstanceCullingDrawParams);
|
|
|
|
if (bRenderInParallel)
|
|
{
|
|
GraphBuilder.AddPass(
|
|
RDG_EVENT_NAME("Translucency(%s Parallel) %dx%d",
|
|
TranslucencyPassToString(TranslucencyPass),
|
|
int32(View.ViewRect.Width() * ViewportScale),
|
|
int32(View.ViewRect.Height() * ViewportScale)),
|
|
PassParameters,
|
|
ERDGPassFlags::Raster | ERDGPassFlags::SkipRenderPass,
|
|
[&SceneRenderer, &View, PassParameters, ViewportScale, Viewport, TranslucencyPass](const FRDGPass* InPass, FRHICommandListImmediate& RHICmdList)
|
|
{
|
|
FRDGParallelCommandListSet ParallelCommandListSet(InPass, RHICmdList, GET_STATID(STAT_CLP_Translucency), SceneRenderer, View, FParallelCommandListBindings(PassParameters), ViewportScale);
|
|
RenderViewTranslucencyInner(RHICmdList, SceneRenderer, View, Viewport, ViewportScale, TranslucencyPass, &ParallelCommandListSet, PassParameters->InstanceCullingDrawParams);
|
|
});
|
|
}
|
|
else
|
|
{
|
|
GraphBuilder.AddPass(
|
|
RDG_EVENT_NAME("Translucency(%s) %dx%d",
|
|
TranslucencyPassToString(TranslucencyPass),
|
|
int32(View.ViewRect.Width() * ViewportScale),
|
|
int32(View.ViewRect.Height() * ViewportScale)),
|
|
PassParameters,
|
|
ERDGPassFlags::Raster,
|
|
[&SceneRenderer, &View, ViewportScale, Viewport, TranslucencyPass, PassParameters](FRHICommandListImmediate& RHICmdList)
|
|
{
|
|
RenderViewTranslucencyInner(RHICmdList, SceneRenderer, View, Viewport, ViewportScale, TranslucencyPass, nullptr, PassParameters->InstanceCullingDrawParams);
|
|
});
|
|
}
|
|
|
|
if (bResolveColorTexture)
|
|
{
|
|
AddResolveSceneColorPass(GraphBuilder, View, SceneColorTexture);
|
|
}
|
|
}
|
|
|
|
void FDeferredShadingSceneRenderer::RenderTranslucencyInner(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FMinimalSceneTextures& SceneTextures,
|
|
const FTranslucencyLightingVolumeTextures& TranslucentLightingVolumeTextures,
|
|
FTranslucencyPassResourcesMap* OutTranslucencyResourceMap,
|
|
FRDGTextureMSAA SharedDepthTexture,
|
|
ETranslucencyView ViewsToRender,
|
|
FRDGTextureRef SceneColorCopyTexture,
|
|
ETranslucencyPass::Type TranslucencyPass,
|
|
FInstanceCullingManager& InstanceCullingManager)
|
|
{
|
|
if (!ShouldRenderTranslucency(TranslucencyPass))
|
|
{
|
|
return;
|
|
}
|
|
|
|
RDG_WAIT_FOR_TASKS_CONDITIONAL(GraphBuilder, IsTranslucencyWaitForTasksEnabled());
|
|
|
|
const bool bIsModulate = TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterDOFModulate;
|
|
const bool bDepthTest = TranslucencyPass != ETranslucencyPass::TPT_TranslucencyAfterMotionBlur;
|
|
const bool bRenderInParallel = IsParallelTranslucencyEnabled();
|
|
const bool bIsScalingTranslucency = SeparateTranslucencyDimensions.Scale < 1.0f;
|
|
const bool bRenderInSeparateTranslucency = IsSeparateTranslucencyEnabled(TranslucencyPass, SeparateTranslucencyDimensions.Scale);
|
|
|
|
// Can't reference scene color in scene textures. Scene color copy is used instead.
|
|
ESceneTextureSetupMode SceneTextureSetupMode = ESceneTextureSetupMode::All;
|
|
EnumRemoveFlags(SceneTextureSetupMode, ESceneTextureSetupMode::SceneColor);
|
|
|
|
if (bRenderInSeparateTranslucency)
|
|
{
|
|
// Create resources shared by each view (each view data is tiled into each of the render target resources)
|
|
FRDGTextureMSAA SharedColorTexture = CreatePostDOFTranslucentTexture(GraphBuilder, TranslucencyPass, SeparateTranslucencyDimensions, bIsModulate, ShaderPlatform);
|
|
|
|
for (int32 ViewIndex = 0, NumProcessedViews = 0; ViewIndex < Views.Num(); ++ViewIndex, ++NumProcessedViews)
|
|
{
|
|
FViewInfo& View = Views[ViewIndex];
|
|
const ETranslucencyView TranslucencyView = GetTranslucencyView(View);
|
|
|
|
if (!EnumHasAnyFlags(TranslucencyView, ViewsToRender))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
RDG_GPU_MASK_SCOPE(GraphBuilder, View.GPUMask);
|
|
RDG_EVENT_SCOPE_CONDITIONAL(GraphBuilder, Views.Num() > 1, "View%d", ViewIndex);
|
|
|
|
FIntRect ScaledViewRect = GetScaledRect(View.ViewRect, SeparateTranslucencyDimensions.Scale);
|
|
|
|
const FScreenPassTextureViewport SeparateTranslucencyViewport = SeparateTranslucencyDimensions.GetInstancedStereoViewport(View);
|
|
const bool bCompositeBackToSceneColor = IsMainTranslucencyPass(TranslucencyPass) || EnumHasAnyFlags(TranslucencyView, ETranslucencyView::UnderWater);
|
|
const bool bLumenGIEnabled = GetViewPipelineState(View).DiffuseIndirectMethod == EDiffuseIndirectMethod::Lumen;
|
|
|
|
/** Separate translucency color is either composited immediately or later during post processing. If done immediately, it's because the view doesn't support
|
|
* compositing (e.g. we're rendering an underwater view) or because we're downsampling the main translucency pass. In this case, we use a local set of
|
|
* textures instead of the external ones passed in.
|
|
*/
|
|
FRDGTextureMSAA SeparateTranslucencyColorTexture = SharedColorTexture;
|
|
|
|
// NOTE: No depth test on post-motionblur translucency
|
|
FRDGTextureMSAA SeparateTranslucencyDepthTexture;
|
|
if (bDepthTest)
|
|
{
|
|
SeparateTranslucencyDepthTexture = SharedDepthTexture;
|
|
}
|
|
|
|
const ERenderTargetLoadAction SeparateTranslucencyColorLoadAction = NumProcessedViews == 0 || View.Family->bMultiGPUForkAndJoin
|
|
? ERenderTargetLoadAction::EClear
|
|
: ERenderTargetLoadAction::ELoad;
|
|
|
|
FOITData OITData = OIT::CreateOITData(GraphBuilder, View, OITPass_SeperateTranslucency);
|
|
|
|
RenderTranslucencyViewInner(
|
|
GraphBuilder,
|
|
*this,
|
|
View,
|
|
SeparateTranslucencyViewport,
|
|
SeparateTranslucencyDimensions.Scale,
|
|
SeparateTranslucencyColorTexture,
|
|
SeparateTranslucencyColorLoadAction,
|
|
SeparateTranslucencyDepthTexture.Target,
|
|
CreateTranslucentBasePassUniformBuffer(GraphBuilder, Scene, View, ViewIndex, TranslucentLightingVolumeTextures, SceneColorCopyTexture, SceneTextureSetupMode, bLumenGIEnabled, OITData),
|
|
TranslucencyPass,
|
|
!bCompositeBackToSceneColor,
|
|
bRenderInParallel,
|
|
InstanceCullingManager);
|
|
|
|
{
|
|
FTranslucencyPassResources& TranslucencyPassResources = OutTranslucencyResourceMap->Get(ViewIndex, TranslucencyPass);
|
|
TranslucencyPassResources.ViewRect = ScaledViewRect;
|
|
TranslucencyPassResources.ColorTexture = SharedColorTexture;
|
|
TranslucencyPassResources.DepthTexture = SharedDepthTexture;
|
|
}
|
|
|
|
if (OITData.PassType & OITPass_SeperateTranslucency)
|
|
{
|
|
OIT::AddOITComposePass(GraphBuilder, View, OITData, SeparateTranslucencyColorTexture.Target);
|
|
}
|
|
|
|
if (bCompositeBackToSceneColor)
|
|
{
|
|
FRDGTextureRef SeparateTranslucencyDepthResolve = nullptr;
|
|
FRDGTextureRef SceneDepthResolve = nullptr;
|
|
if (TranslucencyPass != ETranslucencyPass::TPT_TranslucencyAfterMotionBlur)
|
|
{
|
|
::AddResolveSceneDepthPass(GraphBuilder, View, SeparateTranslucencyDepthTexture);
|
|
|
|
SeparateTranslucencyDepthResolve = SeparateTranslucencyDepthTexture.Resolve;
|
|
SceneDepthResolve = SceneTextures.Depth.Resolve;
|
|
}
|
|
|
|
FTranslucencyPassResources& TranslucencyPassResources = OutTranslucencyResourceMap->Get(ViewIndex, TranslucencyPass);
|
|
|
|
FTranslucencyComposition TranslucencyComposition;
|
|
TranslucencyComposition.Operation = FTranslucencyComposition::EOperation::ComposeToExistingSceneColor;
|
|
TranslucencyComposition.SceneColor = FScreenPassTexture(SceneTextures.Color.Target, View.ViewRect);
|
|
TranslucencyComposition.SceneDepth = FScreenPassTexture(SceneTextures.Depth.Resolve, View.ViewRect);
|
|
TranslucencyComposition.OutputViewport = FScreenPassTextureViewport(SceneTextures.Depth.Resolve, View.ViewRect);
|
|
|
|
FScreenPassTexture UpscaledTranslucency = TranslucencyComposition.AddPass(
|
|
GraphBuilder, View, TranslucencyPassResources);
|
|
|
|
ensure(View.ViewRect == UpscaledTranslucency.ViewRect);
|
|
ensure(UpscaledTranslucency.Texture == SceneTextures.Color.Target);
|
|
|
|
//Invalidate.
|
|
TranslucencyPassResources = FTranslucencyPassResources();
|
|
}
|
|
else
|
|
{
|
|
if (TranslucencyPass == ETranslucencyPass::TPT_TranslucencyAfterDOFModulate)
|
|
{
|
|
FTranslucencyPassResources& TranslucencyPassResources = OutTranslucencyResourceMap->Get(ViewIndex, ETranslucencyPass::TPT_TranslucencyAfterDOF);
|
|
ensure(TranslucencyPassResources.ViewRect == ScaledViewRect);
|
|
ensure(TranslucencyPassResources.DepthTexture == SharedDepthTexture);
|
|
TranslucencyPassResources.ColorModulateTexture = SharedColorTexture;
|
|
}
|
|
else
|
|
{
|
|
check(!bIsModulate);
|
|
}
|
|
}
|
|
|
|
++NumProcessedViews;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
for (int32 ViewIndex = 0; ViewIndex < Views.Num(); ++ViewIndex)
|
|
{
|
|
FViewInfo& View = Views[ViewIndex];
|
|
const ETranslucencyView TranslucencyView = GetTranslucencyView(View);
|
|
|
|
if (!EnumHasAnyFlags(TranslucencyView, ViewsToRender))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
RDG_GPU_MASK_SCOPE(GraphBuilder, View.GPUMask);
|
|
RDG_EVENT_SCOPE_CONDITIONAL(GraphBuilder, Views.Num() > 1, "View%d", ViewIndex);
|
|
|
|
const ERenderTargetLoadAction SceneColorLoadAction = ERenderTargetLoadAction::ELoad;
|
|
const FScreenPassTextureViewport Viewport(SceneTextures.Color.Target, View.ViewRect);
|
|
const float ViewportScale = 1.0f;
|
|
const bool bResolveColorTexture = false;
|
|
const bool bLumenGIEnabled = GetViewPipelineState(View).DiffuseIndirectMethod == EDiffuseIndirectMethod::Lumen;
|
|
|
|
FOITData OITData = OIT::CreateOITData(GraphBuilder, View, OITPass_RegularTranslucency);
|
|
|
|
RenderTranslucencyViewInner(
|
|
GraphBuilder,
|
|
*this,
|
|
View,
|
|
Viewport,
|
|
ViewportScale,
|
|
SceneTextures.Color,
|
|
SceneColorLoadAction,
|
|
SceneTextures.Depth.Target,
|
|
CreateTranslucentBasePassUniformBuffer(GraphBuilder, Scene, View, ViewIndex, TranslucentLightingVolumeTextures, SceneColorCopyTexture, SceneTextureSetupMode, bLumenGIEnabled, OITData),
|
|
TranslucencyPass,
|
|
bResolveColorTexture,
|
|
bRenderInParallel,
|
|
InstanceCullingManager);
|
|
|
|
if (OITData.PassType & OITPass_RegularTranslucency)
|
|
{
|
|
OIT::AddOITComposePass(GraphBuilder, View, OITData, SceneTextures.Color.Target);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void FDeferredShadingSceneRenderer::RenderTranslucency(
|
|
FRDGBuilder& GraphBuilder,
|
|
const FMinimalSceneTextures& SceneTextures,
|
|
const FTranslucencyLightingVolumeTextures& TranslucentLightingVolumeTextures,
|
|
FTranslucencyPassResourcesMap* OutTranslucencyResourceMap,
|
|
ETranslucencyView ViewsToRender,
|
|
FInstanceCullingManager& InstanceCullingManager)
|
|
{
|
|
if (!EnumHasAnyFlags(ViewsToRender, ETranslucencyView::UnderWater | ETranslucencyView::AboveWater))
|
|
{
|
|
return;
|
|
}
|
|
|
|
RDG_GPU_STAT_SCOPE(GraphBuilder, Translucency);
|
|
DynamicRenderScaling::FRDGScope DynamicTranslucencyResolutionScope(GraphBuilder, GDynamicTranslucencyResolution);
|
|
|
|
FRDGTextureRef SceneColorCopyTexture = nullptr;
|
|
|
|
if (EnumHasAnyFlags(ViewsToRender, ETranslucencyView::AboveWater))
|
|
{
|
|
SceneColorCopyTexture = AddCopySceneColorPass(GraphBuilder, Views, SceneTextures.Color);
|
|
}
|
|
|
|
const auto ShouldRenderView = [&](const FViewInfo& View, ETranslucencyView TranslucencyView)
|
|
{
|
|
return View.ShouldRenderView() && EnumHasAnyFlags(TranslucencyView, ViewsToRender);
|
|
};
|
|
|
|
// Create a shared depth texture at the correct resolution.
|
|
FRDGTextureMSAA SharedDepthTexture;
|
|
const bool bIsScalingTranslucency = SeparateTranslucencyDimensions.Scale != 1.0f;
|
|
if (bIsScalingTranslucency)
|
|
{
|
|
const FRDGTextureDesc Desc = FRDGTextureDesc::Create2D(
|
|
SeparateTranslucencyDimensions.Extent,
|
|
PF_DepthStencil,
|
|
FClearValueBinding::DepthFar,
|
|
TexCreate_DepthStencilTargetable | TexCreate_ShaderResource,
|
|
1,
|
|
SeparateTranslucencyDimensions.NumSamples);
|
|
|
|
SharedDepthTexture = CreateTextureMSAA(
|
|
GraphBuilder, Desc,
|
|
TEXT("Translucency.Depth"),
|
|
GFastVRamConfig.SeparateTranslucencyModulate); // TODO: this should be SeparateTranslucency, but is what the code was doing
|
|
|
|
// Downscale the depth buffer for each individual view, but shared accross all translucencies.
|
|
for (int32 ViewIndex = 0; ViewIndex < Views.Num(); ++ViewIndex)
|
|
{
|
|
FViewInfo& View = Views[ViewIndex];
|
|
const ETranslucencyView TranslucencyView = GetTranslucencyView(View);
|
|
|
|
if (!ShouldRenderView(View, TranslucencyView))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
const FScreenPassTextureViewport SeparateTranslucencyViewport = SeparateTranslucencyDimensions.GetInstancedStereoViewport(View);
|
|
AddDownsampleDepthPass(
|
|
GraphBuilder, View,
|
|
FScreenPassTexture(SceneTextures.Depth.Resolve, View.ViewRect),
|
|
FScreenPassRenderTarget(SharedDepthTexture.Target, SeparateTranslucencyViewport.Rect, ViewIndex == 0 ? ERenderTargetLoadAction::EClear : ERenderTargetLoadAction::ELoad),
|
|
EDownsampleDepthFilter::Point);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
// Uses the existing depth buffer for depth testing the translucency.
|
|
SharedDepthTexture = SceneTextures.Depth;
|
|
}
|
|
|
|
if (ActiveViewFamily->AllowTranslucencyAfterDOF())
|
|
{
|
|
RenderTranslucencyInner(GraphBuilder, SceneTextures, TranslucentLightingVolumeTextures, OutTranslucencyResourceMap, SharedDepthTexture, ViewsToRender, SceneColorCopyTexture, ETranslucencyPass::TPT_StandardTranslucency, InstanceCullingManager);
|
|
if (GetHairStrandsComposition() == EHairStrandsCompositionType::AfterTranslucentBeforeTranslucentAfterDOF)
|
|
{
|
|
RenderHairComposition(GraphBuilder, Views, SceneTextures.Color.Target, SceneTextures.Depth.Target);
|
|
}
|
|
RenderTranslucencyInner(GraphBuilder, SceneTextures, TranslucentLightingVolumeTextures, OutTranslucencyResourceMap, SharedDepthTexture, ViewsToRender, SceneColorCopyTexture, ETranslucencyPass::TPT_TranslucencyAfterDOF, InstanceCullingManager);
|
|
RenderTranslucencyInner(GraphBuilder, SceneTextures, TranslucentLightingVolumeTextures, OutTranslucencyResourceMap, SharedDepthTexture, ViewsToRender, SceneColorCopyTexture, ETranslucencyPass::TPT_TranslucencyAfterDOFModulate, InstanceCullingManager);
|
|
RenderTranslucencyInner(GraphBuilder, SceneTextures, TranslucentLightingVolumeTextures, OutTranslucencyResourceMap, SharedDepthTexture, ViewsToRender, SceneColorCopyTexture, ETranslucencyPass::TPT_TranslucencyAfterMotionBlur, InstanceCullingManager);
|
|
}
|
|
else // Otherwise render translucent primitives in a single bucket.
|
|
{
|
|
RenderTranslucencyInner(GraphBuilder, SceneTextures, TranslucentLightingVolumeTextures, OutTranslucencyResourceMap, SharedDepthTexture, ViewsToRender, SceneColorCopyTexture, ETranslucencyPass::TPT_AllTranslucency, InstanceCullingManager);
|
|
}
|
|
|
|
bool bUpscalePostDOFTranslucency = true;
|
|
FRDGTextureRef SharedUpscaledPostDOFTranslucencyColor = nullptr;
|
|
if (bUpscalePostDOFTranslucency)
|
|
{
|
|
const FRDGTextureDesc Desc = FRDGTextureDesc::Create2D(
|
|
SceneTextures.Color.Resolve->Desc.Extent,
|
|
PF_FloatRGBA,
|
|
FClearValueBinding::Black,
|
|
TexCreate_RenderTargetable | TexCreate_ShaderResource);
|
|
|
|
SharedUpscaledPostDOFTranslucencyColor = GraphBuilder.CreateTexture(
|
|
Desc, TEXT("Translucency.PostDOF.UpscaledColor"));
|
|
}
|
|
|
|
// Upscale to full res.
|
|
for (int32 ViewIndex = 0; ViewIndex < Views.Num(); ++ViewIndex)
|
|
{
|
|
FViewInfo& View = Views[ViewIndex];
|
|
const ETranslucencyView TranslucencyView = GetTranslucencyView(View);
|
|
|
|
if (!ShouldRenderView(View, TranslucencyView))
|
|
{
|
|
continue;
|
|
}
|
|
|
|
// Upscale the responsive AA into original depth buffer.
|
|
bool bUpscaleResponsiveAA = (
|
|
IsTemporalAccumulationBasedMethod(View.AntiAliasingMethod) &&
|
|
SharedDepthTexture.Target != SceneTextures.Depth.Target);
|
|
if (bUpscaleResponsiveAA)
|
|
{
|
|
const FScreenPassTextureViewport SeparateTranslucencyViewport = SeparateTranslucencyDimensions.GetInstancedStereoViewport(View);
|
|
AddUpsampleResponsiveAAPass(
|
|
GraphBuilder,
|
|
View,
|
|
FScreenPassTexture(SharedDepthTexture.Target, SeparateTranslucencyViewport.Rect),
|
|
/* OutputDepthTexture = */ SceneTextures.Depth.Target);
|
|
}
|
|
|
|
FTranslucencyPassResources& TranslucencyPassResources = OutTranslucencyResourceMap->Get(ViewIndex, ETranslucencyPass::TPT_TranslucencyAfterDOF);
|
|
if (SharedUpscaledPostDOFTranslucencyColor && TranslucencyPassResources.IsValid() && TranslucencyPassResources.ViewRect.Size() != View.ViewRect.Size() && ITemporalUpscaler::GetMainTAAPassConfig(View) != EMainTAAPassConfig::TSR)
|
|
{
|
|
FTranslucencyComposition TranslucencyComposition;
|
|
TranslucencyComposition.Operation = FTranslucencyComposition::EOperation::UpscaleOnly;
|
|
TranslucencyComposition.SceneDepth = FScreenPassTexture(SceneTextures.Depth.Resolve, View.ViewRect);
|
|
TranslucencyComposition.OutputViewport = FScreenPassTextureViewport(SceneTextures.Depth.Resolve, View.ViewRect);
|
|
|
|
FScreenPassTexture UpscaledTranslucency = TranslucencyComposition.AddPass(
|
|
GraphBuilder, View, TranslucencyPassResources);
|
|
|
|
TranslucencyPassResources.ViewRect = UpscaledTranslucency.ViewRect;
|
|
TranslucencyPassResources.ColorTexture = FRDGTextureMSAA(UpscaledTranslucency.Texture);
|
|
TranslucencyPassResources.DepthTexture = FRDGTextureMSAA();
|
|
}
|
|
}
|
|
}
|