VirtualShadowMapProjection.h

Go to the documentation of this file.

// Copyright Epic Games, Inc. All Rights Reserved.
 
/*=============================================================================
    VirtualShadowMapProjection.h
=============================================================================*/
 
#pragma once
 
#include "CoreTypes.h"
#include "Math/MathFwd.h"
#include "RenderGraphFwd.h"
#include "Templates/SharedPointerFwd.h"
#include "ShaderParameterMacros.h"
 
class FLightSceneInfo;
class FViewInfo;
class FVirtualShadowMapArray;
class FVirtualShadowMapClipmap;
struct FMinimalSceneTextures;
 
struct FTiledVSMProjection
{
    FRDGBufferRef DrawIndirectParametersBuffer;
    FRDGBufferRef DispatchIndirectParametersBuffer;
    FRDGBufferSRVRef TileListDataBufferSRV;
    uint32 TileSize;
};
 
// Note: Must match the definitions in VirtualShadowMapPageManagement.usf!
enum class EVirtualShadowMapProjectionInputType
{
    GBuffer = 0,
    HairStrands = 1
};
const TCHAR* ToString(EVirtualShadowMapProjectionInputType In);
 
void RenderVirtualShadowMapProjection(
    FRDGBuilder& GraphBuilder,
    const FMinimalSceneTextures& SceneTextures,
    const FViewInfo& View, int32 ViewIndex,
    FVirtualShadowMapArray& VirtualShadowMapArray,
    const FIntRect ScissorRect,
    EVirtualShadowMapProjectionInputType InputType,
    const TSharedPtr<FVirtualShadowMapClipmap>& Clipmap,
    bool bModulateRGB,
    FTiledVSMProjection* TiledVSMProjection,
    FRDGTextureRef OutputShadowMaskTexture,
    const TSharedPtr<FVirtualShadowMapClipmap>& FirstPersonClipmap);
 
void RenderVirtualShadowMapProjection(
    FRDGBuilder& GraphBuilder,
    const FMinimalSceneTextures& SceneTextures,
    const FViewInfo& View, int32 ViewIndex,
    FVirtualShadowMapArray& VirtualShadowMapArray,
    const FIntRect ScissorRect,
    EVirtualShadowMapProjectionInputType InputType,
    const FLightSceneInfo& LightSceneInfo,
    int32 VirtualShadowMapId,
    FRDGTextureRef OutputShadowMaskTexture);
 
FRDGTextureRef CreateVirtualShadowMapMaskBits(
    FRDGBuilder& GraphBuilder,
    const FMinimalSceneTextures& SceneTextures,
    FVirtualShadowMapArray& VirtualShadowMapArray,
    const TCHAR* Name);
 
void RenderVirtualShadowMapProjectionOnePass(
    FRDGBuilder& GraphBuilder,
    const FMinimalSceneTextures& SceneTextures,
    const FViewInfo& View, int32 ViewIndex,
    FVirtualShadowMapArray& VirtualShadowMapArray,
    EVirtualShadowMapProjectionInputType InputType,
    FRDGTextureRef ShadowMaskBits);
 
void CompositeVirtualShadowMapMask(
    FRDGBuilder& GraphBuilder,
    const FViewInfo& View,
    const FIntRect ScissorRect,
    const FRDGTextureRef Input,
    bool bDirectionalLight,
    bool bModulateRGB,
    FTiledVSMProjection* TiledVSMProjection,
    FRDGTextureRef OutputShadowMaskTexture);
 
void CompositeVirtualShadowMapFromMaskBits(
    FRDGBuilder& GraphBuilder,
    const FMinimalSceneTextures& SceneTextures,
    const FViewInfo& View, int32 ViewIndex,
    const FIntRect ScissorRect,
    FVirtualShadowMapArray& VirtualShadowMapArray,
    EVirtualShadowMapProjectionInputType InputType,
    int32 VirtualShadowMapId,
    FRDGTextureRef ShadowMaskBits,
    FRDGTextureRef OutputShadowMaskTexture);