PostProcessVisualizeBuffer.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "OverridePassSequence.h"
 
// Returns whether the gbuffer visualization pass needs to render on screen.
bool IsVisualizeGBufferOverviewEnabled(const FViewInfo& View);
 
// Returns whether the gubffer visualization pass needs to dump targets to files.
bool IsVisualizeGBufferDumpToFileEnabled(const FViewInfo& View);
 
// Returns whether the gbuffer visualization pass needs to dump to a pipe.
bool IsVisualizeGBufferDumpToPipeEnabled(const FViewInfo& View);
 
// Returns whether the gbuffer visualization pass should output in floating point format.
bool IsVisualizeGBufferInFloatFormat();
 
struct FVisualizeGBufferOverviewInputs
{
    FScreenPassRenderTarget OverrideOutput;
 
    // The current scene color being processed.
    FScreenPassTexture SceneColor;
 
    // The HDR scene color immediately before tonemapping is applied.
    FScreenPassTexture SceneColorBeforeTonemap;
 
    // The scene color immediately after tonemapping is applied.
    FScreenPassTexture SceneColorAfterTonemap;
 
    // The separate translucency texture to composite.
    FScreenPassTexture SeparateTranslucency;
 
    // The original scene velocity texture to composite.
    FScreenPassTexture Velocity;
 
    FSceneTextureShaderParameters SceneTextures;
 
    const struct FPathTracingResources* PathTracingResources = nullptr;
 
    // Dump targets to files on disk.
    bool bDumpToFile = false;
 
    // Render an overview of the GBuffer targets.
    bool bOverview = false;
 
    // Whether to emit outputs in HDR.
    bool bOutputInHDR = false;
};
 
FScreenPassTexture AddVisualizeGBufferOverviewPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FVisualizeGBufferOverviewInputs& Inputs);
 
struct FVisualizeBufferTile
{
    // The input texture to visualize.
    FScreenPassTexture Input;
 
    // The label of the tile shown on the visualizer.
    FString Label;
 
    // Whether the tile is shown as selected.
    bool bSelected = false;
};
 
struct FVisualizeBufferInputs
{
    FScreenPassRenderTarget OverrideOutput;
 
    // The scene color input to propagate.
    FScreenPassTexture SceneColor;
 
    // The array of tiles to render onto the scene color texture.
    TArrayView<const FVisualizeBufferTile> Tiles;
};
 
FScreenPassTexture AddVisualizeBufferPass(FRDGBuilder& GraphBuilder, const FViewInfo& View, const FVisualizeBufferInputs& Inputs);