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#preflight 619ce604f934c1a291f81cfe #rb aleksander.netzel #ROBOMERGE-AUTHOR: yuriy.odonnell #ROBOMERGE-SOURCE: CL 18270186 in //UE5/Release-5.0/... via CL 18270194 #ROBOMERGE-BOT: STARSHIP (Release-Engine-Staging -> Release-Engine-Test) (v895-18170469) [CL 18270205 by yuriy odonnell in ue5-release-engine-test branch]
514 lines
16 KiB
C++
514 lines
16 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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ShaderResource.cpp: ShaderResource implementation.
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=============================================================================*/
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#include "Shader.h"
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#include "Misc/CoreMisc.h"
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#include "Misc/StringBuilder.h"
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#include "Stats/StatsMisc.h"
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#include "Serialization/MemoryWriter.h"
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#include "VertexFactory.h"
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#include "ProfilingDebugging/DiagnosticTable.h"
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#include "Interfaces/ITargetPlatform.h"
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#include "Interfaces/ITargetPlatformManagerModule.h"
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#include "Interfaces/IShaderFormat.h"
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#include "ShaderCodeLibrary.h"
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#include "ShaderCore.h"
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#include "RenderUtils.h"
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#include "Misc/ConfigCacheIni.h"
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#include "Misc/ScopeLock.h"
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#include "UObject/RenderingObjectVersion.h"
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#include "UObject/FortniteMainBranchObjectVersion.h"
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#include "ProfilingDebugging/LoadTimeTracker.h"
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#include "Misc/MemStack.h"
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#include "ShaderCompilerCore.h"
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#if WITH_EDITORONLY_DATA
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#include "Interfaces/IShaderFormat.h"
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#endif
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int32 GShaderCompressionFormatChoice = 1;
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static FAutoConsoleVariableRef CVarShaderCompressionFormatChoice(
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TEXT("r.Shaders.CompressionFormat"),
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GShaderCompressionFormatChoice,
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TEXT("Select the compression methods for the shader code.\n")
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TEXT(" 0: None (uncompressed)\n")
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TEXT(" 1: LZ4 (default)"),
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ECVF_ReadOnly);
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FName GetShaderCompressionFormat(const FName& ShaderFormat)
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{
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// support an older developer-only CVar for compatibility and make it preempt
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#if !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
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static const IConsoleVariable* CVarSkipCompression = IConsoleManager::Get().FindConsoleVariable(TEXT("r.Shaders.SkipCompression"));
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static bool bSkipCompression = (CVarSkipCompression && CVarSkipCompression->GetInt() != 0);
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if (UNLIKELY(bSkipCompression))
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{
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return NAME_None;
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}
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#endif
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return (GShaderCompressionFormatChoice == 1) ? NAME_LZ4 : NAME_None;
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}
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bool FShaderMapResource::ArePlatformsCompatible(EShaderPlatform CurrentPlatform, EShaderPlatform TargetPlatform)
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{
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bool bFeatureLevelCompatible = CurrentPlatform == TargetPlatform;
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if (!bFeatureLevelCompatible && IsPCPlatform(CurrentPlatform) && IsPCPlatform(TargetPlatform))
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{
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bFeatureLevelCompatible = GetMaxSupportedFeatureLevel(CurrentPlatform) >= GetMaxSupportedFeatureLevel(TargetPlatform);
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bool const bIsTargetD3D = IsD3DPlatform(TargetPlatform);
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bool const bIsCurrentPlatformD3D = IsD3DPlatform(CurrentPlatform);
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// For Metal in Editor we can switch feature-levels, but not in cooked projects when using Metal shader librariss.
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bool const bIsCurrentMetal = IsMetalPlatform(CurrentPlatform);
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bool const bIsTargetMetal = IsMetalPlatform(TargetPlatform);
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bool const bIsMetalCompatible = (bIsCurrentMetal == bIsTargetMetal)
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#if !WITH_EDITOR // Static analysis doesn't like (|| WITH_EDITOR)
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&& (!IsMetalPlatform(CurrentPlatform) || (CurrentPlatform == TargetPlatform))
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#endif
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;
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bool const bIsCurrentOpenGL = IsOpenGLPlatform(CurrentPlatform);
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bool const bIsTargetOpenGL = IsOpenGLPlatform(TargetPlatform);
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bFeatureLevelCompatible = bFeatureLevelCompatible && (bIsCurrentPlatformD3D == bIsTargetD3D && bIsMetalCompatible && bIsCurrentOpenGL == bIsTargetOpenGL);
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}
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return bFeatureLevelCompatible;
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}
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#if RHI_RAYTRACING
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static TArray<uint32> GlobalUnusedIndicies;
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static TArray<FRHIRayTracingShader*> GlobalRayTracingMaterialLibrary;
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static FCriticalSection GlobalRayTracingMaterialLibraryCS;
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void FShaderMapResource::GetRayTracingMaterialLibrary(TArray<FRHIRayTracingShader*>& RayTracingMaterials, FRHIRayTracingShader* DefaultShader)
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{
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FScopeLock Lock(&GlobalRayTracingMaterialLibraryCS);
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RayTracingMaterials = GlobalRayTracingMaterialLibrary;
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for (uint32 Index : GlobalUnusedIndicies)
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{
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RayTracingMaterials[Index] = DefaultShader;
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}
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}
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static uint32 AddToRayTracingLibrary(FRHIRayTracingShader* Shader)
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{
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FScopeLock Lock(&GlobalRayTracingMaterialLibraryCS);
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if (GlobalUnusedIndicies.Num() != 0)
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{
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uint32 Index = GlobalUnusedIndicies.Pop(false);
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checkSlow(GlobalRayTracingMaterialLibrary[Index] == nullptr);
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GlobalRayTracingMaterialLibrary[Index] = Shader;
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return Index;
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}
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else
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{
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GlobalRayTracingMaterialLibrary.Add(Shader);
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return GlobalRayTracingMaterialLibrary.Num() - 1;
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}
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}
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static void RemoveFromRayTracingLibrary(uint32 Index)
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{
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if (Index != ~0u)
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{
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FScopeLock Lock(&GlobalRayTracingMaterialLibraryCS);
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GlobalUnusedIndicies.Push(Index);
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GlobalRayTracingMaterialLibrary[Index] = nullptr;
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}
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}
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#endif // RHI_RAYTRACING
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static void ApplyResourceStats(FShaderMapResourceCode& Resource)
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{
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#if STATS
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INC_DWORD_STAT_BY(STAT_Shaders_ShaderResourceMemory, Resource.GetSizeBytes());
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for (const FShaderMapResourceCode::FShaderEntry& Shader : Resource.ShaderEntries)
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{
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INC_DWORD_STAT_BY_FName(GetMemoryStatType(Shader.Frequency).GetName(), Shader.Code.Num());
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}
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#endif // STATS
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}
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static void RemoveResourceStats(FShaderMapResourceCode& Resource)
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{
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#if STATS
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DEC_DWORD_STAT_BY(STAT_Shaders_ShaderResourceMemory, Resource.GetSizeBytes());
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for (const FShaderMapResourceCode::FShaderEntry& Shader : Resource.ShaderEntries)
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{
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DEC_DWORD_STAT_BY_FName(GetMemoryStatType(Shader.Frequency).GetName(), Shader.Code.Num());
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}
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#endif // STATS
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}
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FShaderMapResourceCode::FShaderMapResourceCode(const FShaderMapResourceCode& Other)
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{
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ResourceHash = Other.ResourceHash;
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ShaderHashes = Other.ShaderHashes;
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ShaderEntries = Other.ShaderEntries;
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#if WITH_EDITORONLY_DATA
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PlatformDebugData = Other.PlatformDebugData;
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PlatformDebugDataHashes = Other.PlatformDebugDataHashes;
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#endif // WITH_EDITORONLY_DATA
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}
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FShaderMapResourceCode::~FShaderMapResourceCode()
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{
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RemoveResourceStats(*this);
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}
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void FShaderMapResourceCode::Finalize()
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{
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FSHA1 Hasher;
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Hasher.Update((uint8*)ShaderHashes.GetData(), ShaderHashes.Num() * sizeof(FSHAHash));
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Hasher.Final();
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Hasher.GetHash(ResourceHash.Hash);
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ApplyResourceStats(*this);
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}
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uint32 FShaderMapResourceCode::GetSizeBytes() const
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{
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uint32 Size = sizeof(*this) + ShaderHashes.GetAllocatedSize() + ShaderEntries.GetAllocatedSize();
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for (const FShaderEntry& Entry : ShaderEntries)
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{
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Size += Entry.Code.GetAllocatedSize();
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}
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return Size;
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}
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int32 FShaderMapResourceCode::FindShaderIndex(const FSHAHash& InHash) const
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{
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return Algo::BinarySearch(ShaderHashes, InHash);
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}
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void FShaderMapResourceCode::AddShaderCompilerOutput(const FShaderCompilerOutput& Output)
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{
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#if WITH_EDITORONLY_DATA
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AddPlatformDebugData(Output.PlatformDebugData);
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#endif
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AddShaderCode(Output.Target.GetFrequency(), Output.OutputHash, Output.ShaderCode);
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}
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void FShaderMapResourceCode::AddShaderCode(EShaderFrequency InFrequency, const FSHAHash& InHash, const FShaderCode& InCode)
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{
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TRACE_CPUPROFILER_EVENT_SCOPE(FShaderMapResourceCode::AddShaderCode);
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const int32 Index = Algo::LowerBound(ShaderHashes, InHash);
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if (Index >= ShaderHashes.Num() || ShaderHashes[Index] != InHash)
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{
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ShaderHashes.Insert(InHash, Index);
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FShaderEntry& Entry = ShaderEntries.InsertDefaulted_GetRef(Index);
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Entry.Frequency = InFrequency;
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const TArray<uint8>& ShaderCode = InCode.GetReadAccess();
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FName ShaderCompressionFormat = GetShaderCompressionFormat();
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if (ShaderCompressionFormat != NAME_None)
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{
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Entry.UncompressedSize = InCode.GetUncompressedSize();
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// we trust that SCWs also obeyed by the same CVar, so we expect a compressed shader code at this point
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// However, if we see an uncompressed shader, it perhaps means that SCW tried to compress it, but the result was worse than uncompressed.
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// Because of that we special-case NAME_None here
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if (ShaderCompressionFormat != InCode.GetCompressionFormat())
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{
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if (InCode.GetCompressionFormat() != NAME_None)
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{
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UE_LOG(LogShaders, Fatal, TEXT("Shader %s is expected to be compressed with %s, but it is compressed with %s instead."),
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*InHash.ToString(),
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*ShaderCompressionFormat.ToString(),
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*InCode.GetCompressionFormat().ToString()
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);
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// unreachable
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return;
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}
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// assume uncompressed due to worse ratio than the compression
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Entry.UncompressedSize = ShaderCode.Num();
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UE_LOG(LogShaders, Warning, TEXT("Shader %s is expected to be compressed with %s, but it arrived uncompressed. Assuming compressing made it longer and storing uncompressed."),
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*InHash.ToString(),
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*ShaderCompressionFormat.ToString()
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);
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}
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}
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else
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{
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Entry.UncompressedSize = ShaderCode.Num();
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}
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Entry.Code = ShaderCode;
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}
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}
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#if WITH_EDITORONLY_DATA
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void FShaderMapResourceCode::AddPlatformDebugData(TConstArrayView<uint8> InPlatformDebugData)
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{
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if (InPlatformDebugData.Num() == 0)
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{
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return;
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}
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FSHAHash Hash;
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{
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FSHA1 Hasher;
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Hasher.Update(InPlatformDebugData.GetData(), InPlatformDebugData.Num());
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Hasher.Final();
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Hasher.GetHash(Hash.Hash);
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}
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const int32 Index = Algo::LowerBound(PlatformDebugDataHashes, Hash);
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if (Index >= PlatformDebugDataHashes.Num() || PlatformDebugDataHashes[Index] != Hash)
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{
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PlatformDebugDataHashes.Insert(Hash, Index);
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PlatformDebugData.EmplaceAt(Index, InPlatformDebugData.GetData(), InPlatformDebugData.Num());
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}
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}
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#endif // WITH_EDITORONLY_DATA
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void FShaderMapResourceCode::ToString(FStringBuilderBase& OutString) const
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{
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OutString.Appendf(TEXT("Shaders: Num=%d\n"), ShaderHashes.Num());
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for (int32 i = 0; i < ShaderHashes.Num(); ++i)
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{
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const FShaderEntry& Entry = ShaderEntries[i];
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OutString.Appendf(TEXT(" [%d]: { Hash: %s, Freq: %s, Size: %d, UncompressedSize: %d }\n"),
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i, *ShaderHashes[i].ToString(), GetShaderFrequencyString(Entry.Frequency), Entry.Code.Num(), Entry.UncompressedSize);
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}
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}
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void FShaderMapResourceCode::Serialize(FArchive& Ar, bool bLoadedByCookedMaterial)
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{
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Ar << ResourceHash;
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Ar << ShaderHashes;
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Ar << ShaderEntries;
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check(ShaderEntries.Num() == ShaderHashes.Num());
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#if WITH_EDITORONLY_DATA
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const bool bSerializePlatformData = !bLoadedByCookedMaterial && (!Ar.IsCooking() || Ar.CookingTarget()->HasEditorOnlyData());
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if (bSerializePlatformData)
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{
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Ar << PlatformDebugDataHashes;
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Ar << PlatformDebugData;
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}
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#endif // WITH_EDITORONLY_DATA
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ApplyResourceStats(*this);
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}
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#if WITH_EDITORONLY_DATA
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void FShaderMapResourceCode::NotifyShadersCompiled(FName FormatName)
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{
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#if WITH_ENGINE
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// Notify the platform shader format that this particular shader is being used in the cook.
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// We discard this data in cooked builds unless Ar.CookingTarget()->HasEditorOnlyData() is true.
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if (PlatformDebugData.Num())
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{
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if (const IShaderFormat* ShaderFormat = GetTargetPlatformManagerRef().FindShaderFormat(FormatName))
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{
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for (const TArray<uint8>& Entry : PlatformDebugData)
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{
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ShaderFormat->NotifyShaderCompiled(Entry, FormatName);
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}
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}
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}
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#endif // WITH_ENGINE
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}
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void FShaderMapResourceCode::NotifyShadersCooked(const ITargetPlatform* TargetPlatform)
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{
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#if WITH_ENGINE
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TArray<FName> ShaderFormatNames;
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TargetPlatform->GetAllTargetedShaderFormats(ShaderFormatNames);
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for (FName FormatName : ShaderFormatNames)
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{
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NotifyShadersCompiled(FormatName);
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}
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#endif
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}
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#endif // WITH_EDITORONLY_DATA
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FShaderMapResource::FShaderMapResource(EShaderPlatform InPlatform, int32 NumShaders)
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: NumRHIShaders(NumShaders)
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, Platform(InPlatform)
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, NumRefs(0)
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{
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RHIShaders = MakeUnique<std::atomic<FRHIShader*>[]>(NumRHIShaders); // this MakeUnique() zero-initializes the array
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#if RHI_RAYTRACING
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if (GRHISupportsRayTracing && GRHISupportsRayTracingShaders)
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{
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RayTracingMaterialLibraryIndices.AddUninitialized(NumShaders);
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FMemory::Memset(RayTracingMaterialLibraryIndices.GetData(), 0xff, NumShaders * RayTracingMaterialLibraryIndices.GetTypeSize());
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}
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#endif // RHI_RAYTRACING
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}
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FShaderMapResource::~FShaderMapResource()
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{
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ReleaseShaders();
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check(NumRefs == 0);
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}
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void FShaderMapResource::AddRef()
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{
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FPlatformAtomics::InterlockedIncrement((volatile int32*)&NumRefs);
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}
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void FShaderMapResource::Release()
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{
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check(NumRefs > 0);
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if (FPlatformAtomics::InterlockedDecrement((volatile int32*)&NumRefs) == 0 && TryRelease())
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{
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// Send a release message to the rendering thread when the shader loses its last reference.
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BeginReleaseResource(this);
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BeginCleanup(this);
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DEC_DWORD_STAT_BY(STAT_Shaders_ShaderResourceMemory, GetSizeBytes());
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}
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}
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void FShaderMapResource::ReleaseShaders()
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{
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if (RHIShaders)
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{
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for (int32 Idx = 0; Idx < NumRHIShaders; ++Idx)
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{
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if (FRHIShader* Shader = RHIShaders[Idx].load(std::memory_order_acquire))
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{
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Shader->Release();
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DEC_DWORD_STAT(STAT_Shaders_NumShadersUsedForRendering);
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}
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}
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RHIShaders = nullptr;
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NumRHIShaders = 0;
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}
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}
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void FShaderMapResource::ReleaseRHI()
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{
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#if RHI_RAYTRACING
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for (int32 Index : RayTracingMaterialLibraryIndices)
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{
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RemoveFromRayTracingLibrary(Index);
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}
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RayTracingMaterialLibraryIndices.Empty();
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#endif // RHI_RAYTRACING
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ReleaseShaders();
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}
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void FShaderMapResource::BeginCreateAllShaders()
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{
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FShaderMapResource* Resource = this;
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ENQUEUE_RENDER_COMMAND(InitCommand)(
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[Resource](FRHICommandListImmediate& RHICmdList)
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{
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for (int32 ShaderIndex = 0; ShaderIndex < Resource->GetNumShaders(); ++ShaderIndex)
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{
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Resource->GetShader(ShaderIndex);
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}
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});
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}
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FRHIShader* FShaderMapResource::CreateShader(int32 ShaderIndex)
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{
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check(IsInParallelRenderingThread());
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check(!RHIShaders[ShaderIndex].load(std::memory_order_acquire));
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TRefCountPtr<FRHIShader> RHIShader = CreateRHIShader(ShaderIndex);
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#if RHI_RAYTRACING
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if (GRHISupportsRayTracing && GRHISupportsRayTracingShaders && RHIShader.IsValid() && RHIShader->GetFrequency() == SF_RayHitGroup)
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{
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RayTracingMaterialLibraryIndices[ShaderIndex] = AddToRayTracingLibrary(static_cast<FRHIRayTracingShader*>(RHIShader.GetReference()));
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}
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#endif // RHI_RAYTRACING
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// keep the reference alive (the caller will release)
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if (RHIShader.IsValid())
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{
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RHIShader->AddRef();
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}
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return RHIShader.GetReference();
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}
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TRefCountPtr<FRHIShader> FShaderMapResource_InlineCode::CreateRHIShader(int32 ShaderIndex)
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{
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TRACE_CPUPROFILER_EVENT_SCOPE(FShaderMapResource_InlineCode::CreateRHIShader);
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#if STATS
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double TimeFunctionEntered = FPlatformTime::Seconds();
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ON_SCOPE_EXIT
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{
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if (IsInRenderingThread())
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{
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double ShaderCreationTime = FPlatformTime::Seconds() - TimeFunctionEntered;
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INC_FLOAT_STAT_BY(STAT_Shaders_TotalRTShaderInitForRenderingTime, ShaderCreationTime);
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}
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};
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#endif
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// we can't have this called on the wrong platform's shaders
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if (!ArePlatformsCompatible(GMaxRHIShaderPlatform, GetPlatform()))
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{
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if (FPlatformProperties::RequiresCookedData())
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{
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UE_LOG(LogShaders, Fatal, TEXT("FShaderMapResource_InlineCode::InitRHI got platform %s but it is not compatible with %s"),
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*LegacyShaderPlatformToShaderFormat(GetPlatform()).ToString(), *LegacyShaderPlatformToShaderFormat(GMaxRHIShaderPlatform).ToString());
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}
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return TRefCountPtr<FRHIShader>();
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}
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FMemStackBase& MemStack = FMemStack::Get();
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const FShaderMapResourceCode::FShaderEntry& ShaderEntry = Code->ShaderEntries[ShaderIndex];
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const uint8* ShaderCode = ShaderEntry.Code.GetData();
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FMemMark Mark(MemStack);
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if (ShaderEntry.Code.Num() != ShaderEntry.UncompressedSize)
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{
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void* UncompressedCode = MemStack.Alloc(ShaderEntry.UncompressedSize, 16);
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auto bSucceed = FCompression::UncompressMemory(GetShaderCompressionFormat(), UncompressedCode, ShaderEntry.UncompressedSize, ShaderCode, ShaderEntry.Code.Num());
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check(bSucceed);
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ShaderCode = (uint8*)UncompressedCode;
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}
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const auto ShaderCodeView = MakeArrayView(ShaderCode, ShaderEntry.UncompressedSize);
|
|
const FSHAHash& ShaderHash = Code->ShaderHashes[ShaderIndex];
|
|
const EShaderFrequency Frequency = ShaderEntry.Frequency;
|
|
|
|
TRefCountPtr<FRHIShader> RHIShader;
|
|
switch (Frequency)
|
|
{
|
|
case SF_Vertex: RHIShader = RHICreateVertexShader(ShaderCodeView, ShaderHash); break;
|
|
case SF_Mesh: RHIShader = RHICreateMeshShader(ShaderCodeView, ShaderHash); break;
|
|
case SF_Amplification: RHIShader = RHICreateAmplificationShader(ShaderCodeView, ShaderHash); break;
|
|
case SF_Pixel: RHIShader = RHICreatePixelShader(ShaderCodeView, ShaderHash); break;
|
|
case SF_Geometry: RHIShader = RHICreateGeometryShader(ShaderCodeView, ShaderHash); break;
|
|
case SF_Compute: RHIShader = RHICreateComputeShader(ShaderCodeView, ShaderHash); break;
|
|
case SF_RayGen: case SF_RayMiss: case SF_RayHitGroup: case SF_RayCallable:
|
|
#if RHI_RAYTRACING
|
|
if (GRHISupportsRayTracing && GRHISupportsRayTracingShaders)
|
|
{
|
|
RHIShader = RHICreateRayTracingShader(ShaderCodeView, ShaderHash, Frequency);
|
|
}
|
|
#endif // RHI_RAYTRACING
|
|
break;
|
|
default:
|
|
checkNoEntry();
|
|
break;
|
|
}
|
|
|
|
if (RHIShader)
|
|
{
|
|
INC_DWORD_STAT(STAT_Shaders_NumShadersUsedForRendering);
|
|
RHIShader->SetHash(ShaderHash);
|
|
}
|
|
return RHIShader;
|
|
}
|