ResolveShader.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "CoreMinimal.h"
#include "GlobalShader.h"
#include "HAL/Platform.h"
#include "RHIDefinitions.h"
#include "Serialization/MemoryLayout.h"
#include "Shader.h"
#include "ShaderCore.h"
#include "ShaderParameters.h"
 
class FPointerTableBase;
class FRHICommandList;
struct FResolveRect;
 
struct FDummyResolveParameter {};
 
class FResolveDepthPS : public FGlobalShader
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepthPS, RENDERCORE_API);
public:
    typedef FDummyResolveParameter FParameter;
        
    FResolveDepthPS();
    FResolveDepthPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
 
    RENDERCORE_API void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, FParameter);
 
    LAYOUT_FIELD(FShaderResourceParameter, UnresolvedSurface);
};
 
class FResolveDepth2XPS : public FResolveDepthPS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepth2XPS, RENDERCORE_API);
public:
 
    typedef FDummyResolveParameter FParameter;
 
    FResolveDepth2XPS();
    FResolveDepth2XPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters)
    {
        return true;
    }
};
 
class FResolveDepth4XPS : public FResolveDepthPS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepth4XPS, RENDERCORE_API);
public:
    typedef FDummyResolveParameter FParameter;
 
    FResolveDepth4XPS();
    FResolveDepth4XPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters)
    {
        return true;
    }
};
 
class FResolveDepth8XPS : public FResolveDepthPS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepth8XPS, RENDERCORE_API);
public:
    typedef FDummyResolveParameter FParameter;
 
    FResolveDepth8XPS();
    FResolveDepth8XPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static bool ShouldCache(EShaderPlatform Platform);
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters)
    {
        return true;
    }
};
 
class FResolveDepthArray2XPS : public FResolveDepthPS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepthArray2XPS, RENDERCORE_API);
public:
    typedef FDummyResolveParameter FParameter;
 
    FResolveDepthArray2XPS();
    FResolveDepthArray2XPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
};
 
class FResolveDepthArray4XPS : public FResolveDepthPS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepthArray4XPS, RENDERCORE_API);
public:
    typedef FDummyResolveParameter FParameter;
 
    FResolveDepthArray4XPS();
    FResolveDepthArray4XPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
};
 
class FResolveDepthArray8XPS : public FResolveDepthPS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveDepthArray8XPS, RENDERCORE_API);
public:
    typedef FDummyResolveParameter FParameter;
 
    FResolveDepthArray8XPS();
    FResolveDepthArray8XPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
};
 
class FResolveSingleSamplePS : public FGlobalShader
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveSingleSamplePS, RENDERCORE_API);
public:
    typedef uint32 FParameter;
 
    FResolveSingleSamplePS();
    FResolveSingleSamplePS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
    
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
 
    RENDERCORE_API void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, uint32 SingleSampleIndexValue);
    
    LAYOUT_FIELD(FShaderResourceParameter, UnresolvedSurface);
    LAYOUT_FIELD(FShaderParameter, SingleSampleIndex);
};
 
class FResolveVS : public FGlobalShader
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveVS, RENDERCORE_API);
public:
    FResolveVS();
    FResolveVS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
    
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
 
    RENDERCORE_API void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, const FResolveRect& SrcBounds, const FResolveRect& DstBounds, uint32 DstSurfaceWidth, uint32 DstSurfaceHeight);
 
    LAYOUT_FIELD(FShaderParameter, PositionMinMax);
    LAYOUT_FIELD(FShaderParameter, UVMinMax);
};
 
class FResolveArrayVS : public FResolveVS
{
    DECLARE_EXPORTED_GLOBAL_SHADER(FResolveArrayVS, RENDERCORE_API);
public:
    FResolveArrayVS();
    FResolveArrayVS(const ShaderMetaType::CompiledShaderInitializerType& Initializer);
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
    static void ModifyCompilationEnvironment(const FGlobalShaderPermutationParameters& Parameters, FShaderCompilerEnvironment& OutEnvironment);
};