NaniteComposition.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
#pragma once
 
#include "NaniteShared.h"
 
extern bool UseComputeDepthExport();
 
struct FCustomDepthTextures;
 
namespace Nanite
{
 
struct FRasterContext;
struct FRasterResults;
 
struct FCustomDepthContext
{
    FRDGTextureRef InputDepth = nullptr;
    FRDGTextureSRVRef InputStencilSRV = nullptr;
    FRDGTextureRef DepthTarget = nullptr;
    FRDGTextureRef StencilTarget = nullptr;
    bool bComputeExport = true;
};
 
void EmitDepthTargets(
    FRDGBuilder& GraphBuilder,
    const FScene& Scene,
    const FViewInfo& View,
    bool bDrawSceneViewsInOneNanitePass,
    FRasterResults& RasterResults,
    FRDGTextureRef SceneDepth,
    FRDGTextureRef VelocityBuffer,
    FRDGTextureRef FirstStageDepthBuffer
);
 
FCustomDepthContext InitCustomDepthStencilContext(
    FRDGBuilder& GraphBuilder,
    const FCustomDepthTextures& CustomDepthTextures,
    bool bWriteCustomStencil
);
 
void EmitCustomDepthStencilTargets(
    FRDGBuilder& GraphBuilder,
    const FScene& Scene,
    const FViewInfo& View,
    bool bDrawSceneViewsInOneNanitePass,
    const FIntVector4& PageConstants,
    FRDGBufferRef VisibleClustersSWHW,
    FRDGBufferRef ViewsBuffer,
    FRDGTextureRef VisBuffer64,
    const FCustomDepthContext& CustomDepthContext
);
 
void FinalizeCustomDepthStencil(
    FRDGBuilder& GraphBuilder,
    const FCustomDepthContext& CustomDepthContext,
    FCustomDepthTextures& OutTextures
);
 
void MarkSceneStencilRects(
    FRDGBuilder& GraphBuilder,
    const FRasterContext& RasterContext,
    FScene& Scene,
    FViewInfo* SharedView,
    FIntPoint ViewportSize,
    uint32 NumRects,
    FRDGBufferSRVRef RectMinMaxBufferSRV,
    FRDGTextureRef DepthAtlasTexture
);
 
void EmitSceneDepthRects(
    FRDGBuilder& GraphBuilder,
    const FRasterContext& RasterContext,
    FScene& Scene,
    FViewInfo* SharedView,
    FIntPoint ViewportSize,
    uint32 NumRects,
    FRDGBufferSRVRef RectMinMaxBufferSRV,
    FRDGTextureRef DepthAtlasTexture
);
 
}