PostProcessMaterial.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "ScreenPass.h"
#include "OverridePassSequence.h"
#include "Substrate/Substrate.h"
 
#include "NeuralPostProcess.h"
#include "PostProcess/PostProcessMaterialInputs.h"
 
class UMaterialInterface;
 
using FPostProcessMaterialChain = TArray<const UMaterialInterface*, TInlineAllocator<10>>;
 
FPostProcessMaterialChain GetPostProcessMaterialChain(const FViewInfo& View, EBlendableLocation Location);
 
BEGIN_SHADER_PARAMETER_STRUCT(FPostProcessMaterialParameters, )
    SHADER_PARAMETER_STRUCT_REF(FViewUniformShaderParameters, View)
    SHADER_PARAMETER_STRUCT_INCLUDE(FSceneTextureShaderParameters, SceneTextures)
    SHADER_PARAMETER_RDG_UNIFORM_BUFFER(FSubstrateGlobalUniformParameters, Substrate)
    SHADER_PARAMETER_STRUCT_INCLUDE(FNeuralPostProcessShaderParameters, NeuralPostProcessParameters)
    SHADER_PARAMETER_STRUCT(FScreenPassTextureViewportParameters, PostProcessOutput)
    SHADER_PARAMETER_STRUCT_ARRAY(FScreenPassTextureSliceInput, PostProcessInput, [kPostProcessMaterialInputCountMax])
    SHADER_PARAMETER_STRUCT_ARRAY(FScreenPassTextureInput, PathTracingPostProcessInput, [kPathTracingPostProcessMaterialInputCountMax])
    SHADER_PARAMETER_SAMPLER(SamplerState, PostProcessInput_BilinearSampler)
    SHADER_PARAMETER_RDG_BUFFER_SRV(StructuredBuffer<float4>, EyeAdaptationBuffer)
    SHADER_PARAMETER(uint32, bMetalMSAAHDRDecode)
    SHADER_PARAMETER(uint32, bSceneDepthWithoutWaterTextureAvailable)
    SHADER_PARAMETER_RDG_TEXTURE(Texture2D, SceneDepthWithoutSingleLayerWaterTexture)
    SHADER_PARAMETER_SAMPLER(SamplerState, SceneDepthWithoutSingleLayerWaterSampler)
    SHADER_PARAMETER(FVector4f, SceneWithoutSingleLayerWaterMinMaxUV)
    SHADER_PARAMETER(FVector2f, SceneWithoutSingleLayerWaterTextureSize)
    SHADER_PARAMETER(FVector2f, SceneWithoutSingleLayerWaterInvTextureSize)
    SHADER_PARAMETER(uint32, ManualStencilReferenceValue)
    SHADER_PARAMETER(uint32, ManualStencilTestMask)
    SHADER_PARAMETER(uint32, UserSceneTextureSceneColorInput)
    RENDER_TARGET_BINDING_SLOTS()
END_SHADER_PARAMETER_STRUCT()
 
 
 
FScreenPassTexture AddPostProcessMaterialPass(
    FRDGBuilder& GraphBuilder,
    const FViewInfo& View,
    const FPostProcessMaterialInputs& Inputs,
    const UMaterialInterface* MaterialInterface);
 
FScreenPassTexture AddPostProcessMaterialChain(
    FRDGBuilder& GraphBuilder,
    const FViewInfo& View,
    int32 ViewIndex,
    const FPostProcessMaterialInputs& Inputs,
    const FPostProcessMaterialChain& MaterialChain,
    EPostProcessMaterialInput MaterialInput = EPostProcessMaterialInput::SceneColor);
 
struct FHighResolutionScreenshotMaskInputs
{
    // [Optional] Render to the specified output. If invalid, a new texture is created and returned.
    FScreenPassRenderTarget OverrideOutput;
 
    FScreenPassTexture SceneColor;
 
    FSceneTextureShaderParameters SceneTextures;
 
    UMaterialInterface* Material = nullptr;
    UMaterialInterface* MaskMaterial = nullptr;
    UMaterialInterface* CaptureRegionMaterial = nullptr;
};
 
bool IsHighResolutionScreenshotMaskEnabled(const FViewInfo& View);
bool IsPathTracingVarianceTextureRequiredInPostProcessMaterial(const FViewInfo& View);
 
FScreenPassTexture AddHighResolutionScreenshotMaskPass(
    FRDGBuilder& GraphBuilder,
    const FViewInfo& View,
    const FHighResolutionScreenshotMaskInputs& Inputs);