DistanceFieldObjectCulling.cpp File Reference

#include "DistanceFieldAmbientOcclusion.h"
#include "DeferredShadingRenderer.h"
#include "PostProcess/PostProcessing.h"
#include "PostProcess/SceneFilterRendering.h"
#include "DistanceFieldLightingShared.h"
#include "ScreenRendering.h"
#include "DistanceFieldLightingPost.h"
#include "LightRendering.h"
#include "OneColorShader.h"
#include "GlobalDistanceField.h"
#include "FXSystem.h"
#include "PostProcess/PostProcessSubsurface.h"
#include "PipelineStateCache.h"
#include "ClearQuad.h"
#include "ScenePrivate.h"
#include "ShaderCompilerCore.h"

Classes
class	FCullObjectsForViewCS
class	FBuildTileConesCS
class	FObjectCullVS
class	FObjectCullPS
class	FComputeCulledTilesStartOffsetCS

Functions
FAutoConsoleVariableRef	CVarMaxDistanceFieldObjectsPerCullTile (TEXT("r.AOAverageObjectsPerCullTile"), GAverageDistanceFieldObjectsPerCullTile, TEXT("Determines how much memory should be allocated in distance field object culling data structures. Too much = memory waste, too little = flickering due to buffer overflow."), ECVF_RenderThreadSafe|ECVF_ReadOnly)
	IMPLEMENT_GLOBAL_SHADER (FCullObjectsForViewCS, "/Engine/Private/DistanceFieldObjectCulling.usf", "CullObjectsForViewCS", SF_Compute)
void	CullObjectsToView (FRDGBuilder &GraphBuilder, const FScene &Scene, const FViewInfo &View, const FDistanceFieldAOParameters &Parameters, FDistanceFieldCulledObjectBufferParameters &CulledObjectBufferParameters)
	IMPLEMENT_GLOBAL_SHADER (FBuildTileConesCS, "/Engine/Private/DistanceFieldObjectCulling.usf", "BuildTileConesMain", SF_Compute)
	IMPLEMENT_GLOBAL_SHADER (FObjectCullVS, "/Engine/Private/DistanceFieldObjectCulling.usf", "ObjectCullVS", SF_Vertex)
	IMPLEMENT_GLOBAL_SHADER (FObjectCullPS, "/Engine/Private/DistanceFieldObjectCulling.usf", "ObjectCullPS", SF_Pixel)
	IMPLEMENT_GLOBAL_SHADER (FComputeCulledTilesStartOffsetCS, "/Engine/Private/DistanceFieldObjectCulling.usf", "ComputeCulledTilesStartOffsetCS", SF_Compute)
void	ScatterTilesToObjects (FRDGBuilder &GraphBuilder, bool bCountingPass, const FViewInfo &View, const FDistanceFieldSceneData &DistanceFieldSceneData, FIntPoint TileListGroupSize, const FDistanceFieldAOParameters &Parameters, FRDGBufferRef ObjectIndirectArguments, const FDistanceFieldCulledObjectBufferParameters &CulledObjectBufferParameters, const FTileIntersectionParameters &TileIntersectionParameters, const FSceneTextures &SceneTextures)
FIntPoint	GetTileListGroupSizeForView (const FViewInfo &View)
void	BuildTileObjectLists (FRDGBuilder &GraphBuilder, const FScene &Scene, const FViewInfo &View, const FSceneTextures &SceneTextures, FRDGBufferRef ObjectIndirectArguments, const FDistanceFieldCulledObjectBufferParameters &CulledObjectBufferParameters, FTileIntersectionParameters TileIntersectionParameters, FRDGTextureRef DistanceFieldNormal, const FDistanceFieldAOParameters &Parameters)

Variables
int32	GAOScatterTileCulling = 1
FAutoConsoleVariableRef	CVarAOScatterTileCulling (TEXT("r.AOScatterTileCulling"), GAOScatterTileCulling, TEXT("Whether to use the rasterizer for binning occluder objects into screenspace tiles."), ECVF_RenderThreadSafe)
int32	GAverageDistanceFieldObjectsPerCullTile = 512
const uint32	ComputeStartOffsetGroupSize = 64

Function Documentation

BuildTileObjectLists()

void BuildTileObjectLists	(	FRDGBuilder &	GraphBuilder,
		const FScene &	Scene,
		const FViewInfo &	View,
		const FSceneTextures &	SceneTextures,
		FRDGBufferRef	ObjectIndirectArguments,
		const FDistanceFieldCulledObjectBufferParameters &	CulledObjectBufferParameters,
		FTileIntersectionParameters	TileIntersectionParameters,
		FRDGTextureRef	DistanceFieldNormal,
		const FDistanceFieldAOParameters &	Parameters
	)

CullObjectsToView()

void CullObjectsToView	(	FRDGBuilder &	GraphBuilder,
		const FScene &	Scene,
		const FViewInfo &	View,
		const FDistanceFieldAOParameters &	Parameters,
		FDistanceFieldCulledObjectBufferParameters &	CulledObjectBufferParameters
	)

CVarMaxDistanceFieldObjectsPerCullTile()

FAutoConsoleVariableRef CVarMaxDistanceFieldObjectsPerCullTile	(	TEXT("r.AOAverageObjectsPerCullTile")	,
		GAverageDistanceFieldObjectsPerCullTile	,
		TEXT("Determines how much memory should be allocated in distance field object culling data structures. Too much = memory waste, too little = flickering due to buffer overflow.")	,
		ECVF_RenderThreadSafe|	ECVF_ReadOnly
	)

GetTileListGroupSizeForView()

FIntPoint GetTileListGroupSizeForView

(

const FViewInfo &

View

)

IMPLEMENT_GLOBAL_SHADER() [1/5]

IMPLEMENT_GLOBAL_SHADER	(	FBuildTileConesCS	,
		"/Engine/Private/DistanceFieldObjectCulling.usf"	,
		"BuildTileConesMain"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [2/5]

IMPLEMENT_GLOBAL_SHADER	(	FComputeCulledTilesStartOffsetCS	,
		"/Engine/Private/DistanceFieldObjectCulling.usf"	,
		"ComputeCulledTilesStartOffsetCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [3/5]

IMPLEMENT_GLOBAL_SHADER	(	FCullObjectsForViewCS	,
		"/Engine/Private/DistanceFieldObjectCulling.usf"	,
		"CullObjectsForViewCS"	,
		SF_Compute
	)

IMPLEMENT_GLOBAL_SHADER() [4/5]

IMPLEMENT_GLOBAL_SHADER	(	FObjectCullPS	,
		"/Engine/Private/DistanceFieldObjectCulling.usf"	,
		"ObjectCullPS"	,
		SF_Pixel
	)

IMPLEMENT_GLOBAL_SHADER() [5/5]

IMPLEMENT_GLOBAL_SHADER	(	FObjectCullVS	,
		"/Engine/Private/DistanceFieldObjectCulling.usf"	,
		"ObjectCullVS"	,
		SF_Vertex
	)

ScatterTilesToObjects()

void ScatterTilesToObjects	(	FRDGBuilder &	GraphBuilder,
		bool	bCountingPass,
		const FViewInfo &	View,
		const FDistanceFieldSceneData &	DistanceFieldSceneData,
		FIntPoint	TileListGroupSize,
		const FDistanceFieldAOParameters &	Parameters,
		FRDGBufferRef	ObjectIndirectArguments,
		const FDistanceFieldCulledObjectBufferParameters &	CulledObjectBufferParameters,
		const FTileIntersectionParameters &	TileIntersectionParameters,
		const FSceneTextures &	SceneTextures
	)

Variable Documentation

ComputeStartOffsetGroupSize

const uint32 ComputeStartOffsetGroupSize = 64

CVarAOScatterTileCulling

FAutoConsoleVariableRef CVarAOScatterTileCulling(TEXT("r.AOScatterTileCulling"), GAOScatterTileCulling, TEXT("Whether to use the rasterizer for binning occluder objects into screenspace tiles."), ECVF_RenderThreadSafe)	(	TEXT("r.AOScatterTileCulling")	,
		GAOScatterTileCulling	,
		TEXT("Whether to use the rasterizer for binning occluder objects into screenspace tiles.")	,
		ECVF_RenderThreadSafe
	)

GAOScatterTileCulling

int32 GAOScatterTileCulling = 1

GAverageDistanceFieldObjectsPerCullTile

int32 GAverageDistanceFieldObjectsPerCullTile = 512