OculusShaders.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 "RHICommandList.h"
#include "RenderResource.h"
#include "Serialization/MemoryLayout.h"
#include "Shader.h"
#include "ShaderParameterUtils.h"
#include "ShaderParameters.h"
 
class FPointerTableBase;
class FRHISamplerState;
class FRHITexture;
class FTexture;
 
class FOculusVertexShader : public FGlobalShader
{
    DECLARE_EXPORTED_SHADER_TYPE(FOculusVertexShader, Global, RENDERCORE_API);
public:
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters) { return true; }
 
    FOculusVertexShader(const ShaderMetaType::CompiledShaderInitializerType& Initializer) :
        FGlobalShader(Initializer)
    {}
    FOculusVertexShader() {}
};
 
class FOculusWhiteShader : public FGlobalShader
{
    DECLARE_EXPORTED_SHADER_TYPE(FOculusWhiteShader, Global, RENDERCORE_API);
public:
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters) { return true; }
 
    FOculusWhiteShader(const ShaderMetaType::CompiledShaderInitializerType& Initializer) :
        FGlobalShader(Initializer)
    {
    }
    
    FOculusWhiteShader() {}
};
 
class FOculusBlackShader : public FGlobalShader
{
    DECLARE_EXPORTED_SHADER_TYPE(FOculusBlackShader, Global, RENDERCORE_API);
public:
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters) { return true; }
 
    FOculusBlackShader(const ShaderMetaType::CompiledShaderInitializerType& Initializer) :
        FGlobalShader(Initializer)
    {
    }
 
    FOculusBlackShader() {}
};
 
class FOculusAlphaInverseShader : public FGlobalShader
{
    DECLARE_EXPORTED_SHADER_TYPE(FOculusAlphaInverseShader, Global, RENDERCORE_API);
public:
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters) { return true; }
 
    FOculusAlphaInverseShader(const ShaderMetaType::CompiledShaderInitializerType& Initializer) :
        FGlobalShader(Initializer)
    {
        InTexture.Bind(Initializer.ParameterMap, TEXT("InTexture"), SPF_Mandatory);
        InTextureSampler.Bind(Initializer.ParameterMap, TEXT("InTextureSampler"));
    }
    FOculusAlphaInverseShader() {}
 
    void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, const FTexture* Texture)
    {
        SetTextureParameter(BatchedParameters, InTexture, InTextureSampler, Texture);
    }
 
    void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, FRHISamplerState* SamplerStateRHI, FRHITexture* TextureRHI)
    {
        SetTextureParameter(BatchedParameters, InTexture, InTextureSampler, SamplerStateRHI, TextureRHI);
    }
 
private:
    LAYOUT_FIELD(FShaderResourceParameter, InTexture);
    LAYOUT_FIELD(FShaderResourceParameter, InTextureSampler);
};
 
 
class FOculusCubemapPS : public FGlobalShader
{
    DECLARE_EXPORTED_SHADER_TYPE(FOculusCubemapPS, Global, RENDERCORE_API);
public:
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters) { return true; }
 
    FOculusCubemapPS(const ShaderMetaType::CompiledShaderInitializerType& Initializer) :
        FGlobalShader(Initializer)
    {
        InTexture.Bind(Initializer.ParameterMap, TEXT("InTextureCube"), SPF_Mandatory);
        InTextureSampler.Bind(Initializer.ParameterMap, TEXT("InTextureSampler"));
        InFaceIndexParameter.Bind(Initializer.ParameterMap, TEXT("CubeFaceIndex"));
    }
    FOculusCubemapPS() {}
 
    void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, const FTexture* Texture, int FaceIndex)
    {
        SetTextureParameter(BatchedParameters, InTexture, InTextureSampler, Texture);
        SetShaderValue(BatchedParameters, InFaceIndexParameter, FaceIndex);
    }
 
    void SetParameters(FRHIBatchedShaderParameters& BatchedParameters, FRHISamplerState* SamplerStateRHI, FRHITexture* TextureRHI, int FaceIndex)
    {
        SetTextureParameter(BatchedParameters, InTexture, InTextureSampler, SamplerStateRHI, TextureRHI);
        SetShaderValue(BatchedParameters, InFaceIndexParameter, FaceIndex);
    }
 
private:
    LAYOUT_FIELD(FShaderResourceParameter, InTexture);
    LAYOUT_FIELD(FShaderResourceParameter, InTextureSampler);
    LAYOUT_FIELD(FShaderParameter, InFaceIndexParameter);
};