MaterialShaderMapLayout.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "Misc/SecureHash.h"
#include "RHIDefinitions.h"
 
class FShaderType;
class FShaderPipelineType;
class FVertexFactoryType;
struct FMaterialShaderParameters;
enum class EShaderPermutationFlags : uint32;
enum EShaderPlatform : uint16;
 
class FShaderLayoutEntry
{
public:
    FShaderLayoutEntry() : ShaderType(nullptr), PermutationId(0) {}
    FShaderLayoutEntry(FShaderType* InShaderType, int32 InPermutationId) : ShaderType(InShaderType), PermutationId(InPermutationId) {}
 
    FShaderType* ShaderType;
    int32 PermutationId;
};
 
class FShaderMapLayout
{
public:
    EShaderPlatform Platform;
    TArray<FShaderLayoutEntry> Shaders;
    TArray<FShaderPipelineType*> ShaderPipelines;
};
 
class FMeshMaterialShaderMapLayout : public FShaderMapLayout
{
public:
    explicit FMeshMaterialShaderMapLayout(FVertexFactoryType* InVertexFactoryType) : VertexFactoryType(InVertexFactoryType) {}
 
    FVertexFactoryType* VertexFactoryType;
};
 
class FMaterialShaderMapLayout : public FShaderMapLayout
{
public:
    TArray<FMeshMaterialShaderMapLayout> MeshShaderMaps;
    FSHAHash ShaderMapHash;
#if WITH_EDITOR
    FSHAHash ShaderCompileHash;
#endif
};
 
const FMaterialShaderMapLayout& AcquireMaterialShaderMapLayout(EShaderPlatform Platform, EShaderPermutationFlags Flags, const FMaterialShaderParameters& MaterialParameters);