PostProcessMobile.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    PostProcessMobile.h: Mobile uber post processing.
=============================================================================*/
 
#pragma once
 
#include "ScreenPass.h"
#include "PostProcessEyeAdaptation.h"
#include "PostProcess/PostProcessTonemap.h"
#include "PostProcess/PostProcessUpscale.h"
 
class FViewInfo;
 
// return Depth of Field Scale if Gaussian DoF mode is active. 0.0f otherwise.
float GetMobileDepthOfFieldScale(const FViewInfo& View);
 
struct FMobileBloomSetupInputs
{
    FScreenPassTexture SceneColor;
    FScreenPassTexture SunShaftAndDof;
 
    bool bUseBloom = false;
    bool bUseSun = false;
    bool bUseDof = false;
    bool bUseEyeAdaptation = false;
    bool bUseMetalMSAAHDRDecode = false;
};
 
struct FMobileBloomSetupOutputs
{
    FScreenPassTexture Bloom;
    FScreenPassTexture SunShaftAndDof;
    FScreenPassTexture EyeAdaptation;
};
 
FMobileBloomSetupOutputs AddMobileBloomSetupPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FEyeAdaptationParameters& EyeAdaptationParameters, const FMobileBloomSetupInputs& Inputs);
 
struct FMobileDofNearInputs
{
    FScreenPassTexture BloomSetup_SunShaftAndDof;
 
    bool bUseSun = false;
};
 
struct FMobileDofNearOutputs
{
    FScreenPassTexture DofNear;
};
 
FMobileDofNearOutputs AddMobileDofNearPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileDofNearInputs& Inputs);
 
struct FMobileDofDownInputs
{
    FScreenPassTexture SceneColor;
    FScreenPassTexture SunShaftAndDof;
    FScreenPassTexture DofNear;
 
    bool bUseSun = false;
};
 
struct FMobileDofDownOutputs
{
    FScreenPassTexture DofDown;
};
 
FMobileDofDownOutputs AddMobileDofDownPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileDofDownInputs& Inputs);
 
struct FMobileDofBlurInputs
{
    FScreenPassTexture DofDown;
    FScreenPassTexture DofNear;
};
 
struct FMobileDofBlurOutputs
{
    FScreenPassTexture DofBlur;
};
 
FMobileDofBlurOutputs AddMobileDofBlurPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileDofBlurInputs& Inputs);
 
struct FMobileIntegrateDofInputs
{
    FScreenPassTexture SceneColor;
    FScreenPassTexture DofBlur;
    FScreenPassTexture SunShaftAndDof;
};
 
FScreenPassTexture AddMobileIntegrateDofPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileIntegrateDofInputs& Inputs);
 
struct FMobileBloomDownInputs
{
    FScreenPassTexture BloomDownSource;
 
    float BloomDownScale = 0.66f * 4.0f;
};
 
FScreenPassTexture AddMobileBloomDownPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileBloomDownInputs& Inputs);
 
struct FMobileBloomUpInputs
{
    FScreenPassTexture BloomUpSourceA;
    FScreenPassTexture BloomUpSourceB;
 
    FVector2D ScaleAB;
    FVector4f TintA;
    FVector4f TintB;
};
 
FScreenPassTexture AddMobileBloomUpPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileBloomUpInputs& Inputs);
 
struct FMobileSunMaskInputs
{
    FScreenPassTexture SceneColor;
    TRDGUniformBufferRef<FMobileSceneTextureUniformParameters> SceneTextures = nullptr;
 
    bool bUseSun = false;
    bool bUseDof = false;
    bool bUseDepthTexture = false;
    bool bUseMetalMSAAHDRDecode = false;
};
 
struct FMobileSunMaskOutputs
{
    FScreenPassTexture SunMask;
    FScreenPassTexture SceneColor;
};
 
FMobileSunMaskOutputs AddMobileSunMaskPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileSunMaskInputs& Inputs);
 
struct FMobileSunAlphaInputs
{
    FScreenPassTexture BloomSetup_SunShaftAndDof;
    bool bUseMobileDof;
};
FScreenPassTexture AddMobileSunAlphaPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileSunAlphaInputs& Inputs);
 
struct FMobileSunBlurInputs
{
    FScreenPassTexture SunAlpha;
};
FScreenPassTexture AddMobileSunBlurPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileSunBlurInputs& Inputs);
 
struct FMobileSunMergeInputs
{
    FScreenPassTexture SunBlur;
    FScreenPassTexture BloomSetup_Bloom;
    FScreenPassTexture BloomUp;
    bool bUseBloom;
    bool bUseSun;
};
 
FScreenPassTexture AddMobileSunMergePass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FMobileSunMergeInputs& Inputs);
 
struct FMobileEyeAdaptationSetupInputs
{
    FScreenPassTexture BloomSetup_EyeAdaptation;
    bool bUseBasicEyeAdaptation;
    bool bUseHistogramEyeAdaptation;
};
 
struct FMobileEyeAdaptationSetupOutputs
{
    FRDGBufferSRVRef EyeAdaptationSetupSRV;
};
 
FMobileEyeAdaptationSetupOutputs AddMobileEyeAdaptationSetupPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FEyeAdaptationParameters& EyeAdaptationParameters, const FMobileEyeAdaptationSetupInputs& Inputs);
 
struct FMobileEyeAdaptationInputs
{
    FRDGBufferSRVRef EyeAdaptationSetupSRV;
    FRDGBufferRef EyeAdaptationBuffer;
    bool bUseBasicEyeAdaptation;
    bool bUseHistogramEyeAdaptation;
};
 
void AddMobileEyeAdaptationPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FEyeAdaptationParameters& EyeAdaptationParameters, const FMobileEyeAdaptationInputs& Inputs);
 
class FMSAADecodeAndCopyRectPS_Mobile : public FGlobalShader
{
    DECLARE_GLOBAL_SHADER(FMSAADecodeAndCopyRectPS_Mobile);
    SHADER_USE_PARAMETER_STRUCT(FMSAADecodeAndCopyRectPS_Mobile, FGlobalShader);
 
    static bool ShouldCompilePermutation(const FGlobalShaderPermutationParameters& Parameters);
 
    BEGIN_SHADER_PARAMETER_STRUCT(FParameters, )
        SHADER_PARAMETER_RDG_TEXTURE(Texture2D, InputTexture)
        SHADER_PARAMETER_SAMPLER(SamplerState, InputSampler)
        RENDER_TARGET_BINDING_SLOTS()
    END_SHADER_PARAMETER_STRUCT()
};
 
FScreenPassTexture AddEASUPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const ISpatialUpscaler::FInputs& PassInputs);
FScreenPassTexture AddCASPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const ISpatialUpscaler::FInputs& PassInputs);