#include "PrecomputedVolumetricLightmap.h"
#include "Engine/Texture.h"
#include "UObject/UE5MainStreamObjectVersion.h"
#include "Engine/MapBuildDataRegistry.h"
#include "Engine/World.h"
#include "UObject/MobileObjectVersion.h"
#include "RenderGraphUtils.h"
#include "RenderingThread.h"
#include "ShaderCompiler.h"
#include "DataDrivenShaderPlatformInfo.h"
#include "SceneInterface.h"
#include "Stats/StatsTrace.h"

Functions
	DECLARE_MEMORY_STAT (TEXT("Volumetric Lightmap"), STAT_VolumetricLightmapBuildData, STATGROUP_MapBuildData)

void	ConvertBGRA8ToRGBA8ForLayer (FVolumetricLightmapDataLayer &Layer)

FArchive &	operator<< (FArchive &Ar, FVolumetricLightmapDataLayer &Layer)

FArchive &	operator<< (FArchive &Ar, FPrecomputedVolumetricLightmapData &Volume)

FArchive &	operator<< (FArchive &Ar, FPrecomputedVolumetricLightmapData *&Volume)

FIntVector	ComputeBrickLayoutPosition (int32 BrickLayoutAllocation, FIntVector BrickLayoutDimensions)

FVector	ComputeIndirectionCoordinate (FVector LookupPosition, const FBox &VolumeBounds, FIntVector IndirectionTextureDimensions)

void	SampleIndirectionTexture (FVector IndirectionDataSourceCoordinate, FIntVector IndirectionTextureDimensions, const uint8 *IndirectionTextureData, FIntVector &OutIndirectionBrickOffset, int32 &OutIndirectionBrickSize)

void	SampleIndirectionTextureWithSubLevel (FVector IndirectionDataSourceCoordinate, FIntVector IndirectionTextureDimensions, const uint8 *IndirectionTextureData, const TArray< uint8 > &CPUSubLevelIndirectionTable, FIntVector &OutIndirectionBrickOffset, int32 &OutIndirectionBrickSize, int32 &OutSubLevelIndex)

FVector	ComputeBrickTextureCoordinate (FVector IndirectionDataSourceCoordinate, FIntVector IndirectionBrickOffset, int32 IndirectionBrickSize, int32 BrickSize)

	IMPLEMENT_GLOBAL_SHADER (FRemoveSubLevelBricksCS, "/Engine/Private/VolumetricLightmapStreaming.usf", "RemoveSubLevelBricksCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FCopyResidentBricksCS, "/Engine/Private/VolumetricLightmapStreaming.usf", "CopyResidentBricksCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FCopyResidentBrickSHCoefficientsCS, "/Engine/Private/VolumetricLightmapStreaming.usf", "CopyResidentBrickSHCoefficientsCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FPatchIndirectionTextureCS, "/Engine/Private/VolumetricLightmapStreaming.usf", "PatchIndirectionTextureCS", SF_Compute)

	IMPLEMENT_GLOBAL_SHADER (FMoveWholeIndirectionTextureCS, "/Engine/Private/VolumetricLightmapStreaming.usf", "MoveWholeIndirectionTextureCS", SF_Compute)

template<class VolumetricLightmapBrickDataType >
void	CopyDataIntoAtlas (FRHICommandList &RHICmdList, ERHIFeatureLevel::Type FeatureLevel, int32 SrcOffset, int32 DestOffset, int32 NumBricks, const VolumetricLightmapBrickDataType &SrcData, FVolumetricLightmapBrickTextureSet DestTextureSet)

Variables
TGlobalResource< FVolumetricLightmapBrickAtlas >	GVolumetricLightmapBrickAtlas

Function Documentation

◆ ComputeBrickLayoutPosition()

FIntVector ComputeBrickLayoutPosition	(	int32	BrickLayoutAllocation,
		FIntVector	BrickLayoutDimensions
	)

inline

◆ ComputeBrickTextureCoordinate()

FVector ComputeBrickTextureCoordinate	(	FVector	IndirectionDataSourceCoordinate,
		FIntVector	IndirectionBrickOffset,
		int32	IndirectionBrickSize,
		int32	BrickSize
	)

◆ ComputeIndirectionCoordinate()

FVector ComputeIndirectionCoordinate	(	FVector	LookupPosition,
		const FBox &	VolumeBounds,
		FIntVector	IndirectionTextureDimensions
	)

◆ ConvertBGRA8ToRGBA8ForLayer()

void ConvertBGRA8ToRGBA8ForLayer ( FVolumetricLightmapDataLayer & Layer )

inline

◆ CopyDataIntoAtlas()

template<class VolumetricLightmapBrickDataType >

void CopyDataIntoAtlas	(	FRHICommandList &	RHICmdList,
		ERHIFeatureLevel::Type	FeatureLevel,
		int32	SrcOffset,
		int32	DestOffset,
		int32	NumBricks,
		const VolumetricLightmapBrickDataType &	SrcData,
		FVolumetricLightmapBrickTextureSet	DestTextureSet
	)

◆ DECLARE_MEMORY_STAT()

DECLARE_MEMORY_STAT	(	TEXT("Volumetric Lightmap")	,
		STAT_VolumetricLightmapBuildData	,
		STATGROUP_MapBuildData
	)

◆ IMPLEMENT_GLOBAL_SHADER() [1/5]

IMPLEMENT_GLOBAL_SHADER	(	FCopyResidentBricksCS	,
		"/Engine/Private/VolumetricLightmapStreaming.usf"	,
		"CopyResidentBricksCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [2/5]

IMPLEMENT_GLOBAL_SHADER	(	FCopyResidentBrickSHCoefficientsCS	,
		"/Engine/Private/VolumetricLightmapStreaming.usf"	,
		"CopyResidentBrickSHCoefficientsCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [3/5]

IMPLEMENT_GLOBAL_SHADER	(	FMoveWholeIndirectionTextureCS	,
		"/Engine/Private/VolumetricLightmapStreaming.usf"	,
		"MoveWholeIndirectionTextureCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [4/5]

IMPLEMENT_GLOBAL_SHADER	(	FPatchIndirectionTextureCS	,
		"/Engine/Private/VolumetricLightmapStreaming.usf"	,
		"PatchIndirectionTextureCS"	,
		SF_Compute
	)

◆ IMPLEMENT_GLOBAL_SHADER() [5/5]

IMPLEMENT_GLOBAL_SHADER	(	FRemoveSubLevelBricksCS	,
		"/Engine/Private/VolumetricLightmapStreaming.usf"	,
		"RemoveSubLevelBricksCS"	,
		SF_Compute
	)

◆ operator<<() [1/3]

FArchive & operator<<	(	FArchive &	Ar,
		FPrecomputedVolumetricLightmapData &	Volume
	)

◆ operator<<() [2/3]

FArchive & operator<<	(	FArchive &	Ar,
		FPrecomputedVolumetricLightmapData *&	Volume
	)

◆ operator<<() [3/3]

FArchive & operator<<	(	FArchive &	Ar,
		FVolumetricLightmapDataLayer &	Layer
	)

◆ SampleIndirectionTexture()

void SampleIndirectionTexture	(	FVector	IndirectionDataSourceCoordinate,
		FIntVector	IndirectionTextureDimensions,
		const uint8 *	IndirectionTextureData,
		FIntVector &	OutIndirectionBrickOffset,
		int32 &	OutIndirectionBrickSize
	)

◆ SampleIndirectionTextureWithSubLevel()

void SampleIndirectionTextureWithSubLevel	(	FVector	IndirectionDataSourceCoordinate,
		FIntVector	IndirectionTextureDimensions,
		const uint8 *	IndirectionTextureData,
		const TArray< uint8 > &	CPUSubLevelIndirectionTable,
		FIntVector &	OutIndirectionBrickOffset,
		int32 &	OutIndirectionBrickSize,
		int32 &	OutSubLevelIndex
	)

Variable Documentation

◆ GVolumetricLightmapBrickAtlas

TGlobalResource<FVolumetricLightmapBrickAtlas> GVolumetricLightmapBrickAtlas

Functions

Variables