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5a8a3b3063
The shader code output contains a little bit of plaintext such as I/O identifiers and the shader name, which was generated for the DXC backend in a way that prevents caching. This unifies the shader name in the output code and improves the cache hit ratio for a Lyra cook from 0% to roughly 50% cache hits (for certain platforms). #rb Jason.Nadro, Carl.Lloyd #fyi Brian.White, Arciel.Rekman, Brandon.Schaefer #jira FORT-548603 #preflight 63e26c6c07207b2570ba2d5b #rnx [CL 24050212 by Laura Hermanns in ue5-main branch]
87 lines
4.0 KiB
C++
87 lines
4.0 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/Array.h"
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#include "Containers/Map.h"
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#include "Containers/UnrealString.h"
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#include "CoreMinimal.h"
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#include "CrossCompilerCommon.h"
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#include "HAL/Platform.h"
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#include "Serialization/Archive.h"
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// Forward declaration from <spirv_reflect.h>
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struct SpvReflectBlockVariable;
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struct SpvReflectInterfaceVariable;
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struct SpvReflectTypeDescription;
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// Cross compiler support/common functionality
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namespace CrossCompiler
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{
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class SHADERCOMPILERCOMMON_API FHlslccHeaderWriter
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{
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public:
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void WriteSourceInfo(const TCHAR* VirtualSourceFilePath, const TCHAR* EntryPointName);
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void WriteCompilerInfo(const TCHAR* CompilerName = TEXT("ShaderConductor"));
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void WriteInputAttribute(const SpvReflectInterfaceVariable& Attribute);
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void WriteInputAttribute(const TCHAR* AttributeName, const TCHAR* TypeSpecifier, int32 Location, bool bLocationPrefix, bool bLocationSuffix);
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void WriteOutputAttribute(const SpvReflectInterfaceVariable& Attribute);
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void WriteOutputAttribute(const TCHAR* AttributeName, const TCHAR* TypeSpecifier, int32 Location, bool bLocationPrefix, bool bLocationSuffix);
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void WriteUniformBlock(const TCHAR* ResourceName, uint32 BindingIndex);
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void WritePackedGlobal(const TCHAR* ResourceName, EPackedTypeName PackedType, uint32 ByteOffset, uint32 ByteSize);
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void WritePackedGlobal(const SpvReflectBlockVariable& Variable);
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void WritePackedUB(uint32 BindingIndex);
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void WritePackedUBField(const TCHAR* ResourceName, uint32 ByteOffset, uint32 ByteSize);
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void WritePackedUB(const FString& UBName, uint32 BindingIndex);
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void WritePackedUBField(const FString& UBName, const TCHAR* ResourceName, uint32 ByteOffset, uint32 ByteSize);
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void WritePackedUBCopy(uint32 SourceCB, uint32 SourceOffset, uint32 DestCBIndex, uint32 DestCBPrecision, uint32 DestOffset, uint32 Size, bool bGroupFlattenedUBs = false);
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void WritePackedUBGlobalCopy(uint32 SourceCB, uint32 SourceOffset, uint32 DestCBIndex, uint32 DestCBPrecision, uint32 DestOffset, uint32 Size, bool bGroupFlattenedUBs = false);
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void WriteSRV(const TCHAR* ResourceName, uint32 BindingIndex, uint32 Count = 1);
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void WriteSRV(const TCHAR* ResourceName, uint32 BindingIndex, uint32 Count, const TArray<FString>& AssociatedResourceNames);
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void WriteUAV(const TCHAR* ResourceName, uint32 BindingIndex, uint32 Count = 1);
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void WriteSamplerState(const TCHAR* ResourceName, uint32 BindingIndex);
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void WriteNumThreads(uint32 NumThreadsX, uint32 NumThreadsY, uint32 NumThreadsZ);
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void WriteAccelerationStructures(const TCHAR* ResourceName, uint32 BindingIndex);
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void WriteSideTable(const TCHAR* ResourceName, uint32 SideTableIndex);
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void WriteArgumentBuffers(uint32 BindingIndex, const TArray<uint32>& ResourceIndices);
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/** Returns the finalized meta data. */
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FString ToString() const;
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static EPackedTypeName EncodePackedGlobalType(const SpvReflectTypeDescription& TypeDescription, bool bHalfPrecision = false);
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private:
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void WriteIOAttribute(FString& OutMetaData, const TCHAR* AttributeName, const TCHAR* TypeSpecifier, int32 Location, bool bLocationPrefix, bool bLocationSuffix);
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void WriteIOAttribute(FString& OutMetaData, const SpvReflectInterfaceVariable& Attribute, bool bIsInput);
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private:
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struct FMetaDataStrings
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{
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FString SourceInfo;
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FString CompilerInfo;
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FString InputAttributes;
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FString OutputAttributes;
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FString UniformBlocks;
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FString PackedGlobals;
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TMap<FString, FString> PackedUBs;
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TMap<FString, FString> PackedUBFields;
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FString PackedUBCopies;
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FString PackedUBGlobalCopies;
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FString SRVs; // Shader resource views (SRV) and samplers
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FString UAVs; // Unordered access views (UAV)
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FString SamplerStates;
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FString NumThreads;
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FString ExternalTextures; // External texture resources (Vulkan ES3.1 profile only)
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FString SideTable; // Side table for additional indices, e.,g. "spvBufferSizeConstants(31)" (Metal only)
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FString ArgumentBuffers; // Indirect argument buffers (Metal only)
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FString AccelerationStructures;
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};
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private:
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FMetaDataStrings Strings;
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};
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}
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