HairStrandsForwardRaster.h

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// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    HairVisibilityRendering.h: Hair strands visibility buffer implementation.
=============================================================================*/
 
#pragma once
 
#include "CoreMinimal.h"
#include "RendererInterface.h"
#include "RenderGraphResources.h"
#include "HairStrandsData.h"
 
class FViewInfo;
class FInstanceCullingManager;
 
struct FRasterForwardCullingOutput
{
    FIntPoint           Resolution;
    uint32              RasterizedInstanceCount = 0;
    FRDGTextureRef      NodeIndex = nullptr;
    FRDGBufferRef       NodeCoord = nullptr;
    FRDGBufferRef       NodeVis = nullptr;
    FRDGBufferRef       PointCount = nullptr;
    FRDGBufferRef       Points = nullptr;
    FRDGBufferSRVRef    PointsSRV = nullptr;
};
 
FRasterForwardCullingOutput AddHairStrandsForwardCullingPass(
    FRDGBuilder& GraphBuilder,
    const FViewInfo& ViewInfo,
    const FHairStrandsMacroGroupDatas& MacroGroupDatas,
    const FIntPoint& InResolution,
    const FRDGTextureRef SceneDepthTexture,
    bool bSupportCulling,
    bool bForceRegister);
 
void AddHairStrandsForwardRasterPass(
    FRDGBuilder& GraphBuilder,
    const FViewInfo& ViewInfo,
    const FIntPoint& InResolution,
    const FHairStrandsVisibilityData& InData,
    const FRDGTextureRef SceneDepthTexture,
    const FRDGTextureRef SceneColorTexture,
    const FRDGTextureRef SceneVelocityColorTexture);