ContentStreaming.cpp File Reference

#include "ContentStreaming.h"
#include "Components/PrimitiveComponent.h"
#include "Engine/Engine.h"
#include "Engine/Texture2D.h"
#include "Misc/ConfigCacheIni.h"
#include "RHI.h"
#include "UObject/UObjectIterator.h"
#include "Engine/Level.h"
#include "RenderingThread.h"
#include "Streaming/StreamingManagerTexture.h"
#include "Animation/AnimationStreaming.h"
#include "AudioStreamingCache.h"
#include "AudioCompressionSettingsUtils.h"
#include "VT/VirtualTextureChunkManager.h"
#include "Rendering/NaniteCoarseMeshStreamingManager.h"
#include "AutoRTFM.h"
#include "HAL/LowLevelMemStats.h"
#include "ProfilingDebugging/MetadataTrace.h"
#include "Streaming/SimpleStreamableAssetManager.h"

Classes
struct	FTrackedRenderAssetEvent

Macros
#define	ENABLE_RENDER_ASSET_TRACKING   !(UE_BUILD_SHIPPING || UE_BUILD_TEST)
#define	ENABLE_RENDER_ASSET_LOGGING   1
#define	NUM_TRACKEDRENDERASSETEVENTS   512

Functions
void	FlushResourceStreaming ()
void	TrackRenderAssetInit ()
bool	TrackRenderAsset (const FString &AssetName)
bool	UntrackRenderAsset (const FString &AssetName)
void	ListTrackedRenderAssets (FOutputDevice &Ar, int32 NumAssets)
bool	TrackRenderAssetEvent (FStreamingRenderAsset *StreamingRenderAsset, UStreamableRenderAsset *RenderAsset, bool bForceMipLevelsToBeResident, const FRenderAssetStreamingManager *Manager)
FArchive &	operator<< (FArchive &Ar, FStreamableTextureInstance &TextureInstance)
FArchive &	operator<< (FArchive &Ar, FDynamicTextureInstance &TextureInstance)

Variables
TArray< FString >	GTrackedRenderAssetNames
bool	GTrackedRenderAssetsInitialized = false
FTrackedRenderAssetEvent	GTrackedRenderAssetEvents [NUM_TRACKEDRENDERASSETEVENTS]
int32	GTrackedRenderAssetEventIndex = -1
TArray< FTrackedRenderAssetEvent >	GTrackedRenderAssets

Macro Definition Documentation

ENABLE_RENDER_ASSET_LOGGING

#define ENABLE_RENDER_ASSET_LOGGING   1

ENABLE_RENDER_ASSET_TRACKING

#define ENABLE_RENDER_ASSET_TRACKING   !(UE_BUILD_SHIPPING || UE_BUILD_TEST)

Turn on ENABLE_RENDER_ASSET_TRACKING and setup GTrackedTextures to track specific textures/meshes through the streaming system.

NUM_TRACKEDRENDERASSETEVENTS

#define NUM_TRACKEDRENDERASSETEVENTS   512

Function Documentation

FlushResourceStreaming()

void FlushResourceStreaming

(

)

Helper function to flush resource streaming from within Core project.

ListTrackedRenderAssets()

void ListTrackedRenderAssets	(	FOutputDevice &	Ar,
		int32	NumAssets
	)

Lists all currently tracked texture/mesh names in the specified log.

Parameters

Ar	Desired output log
NumAssets	Maximum number of tracked texture/mesh names to output. Outputs all if NumAssets <= 0.

operator<<() [1/2]

FArchive & operator<<	(	FArchive &	Ar,
		FDynamicTextureInstance &	TextureInstance
	)

FDynamicTextureInstance serialize operator.

Parameters

Ar	Archive to to serialize object to/ from
TextureInstance	Object to serialize

Returns

Returns the archive passed in

operator<<() [2/2]

FArchive & operator<<	(	FArchive &	Ar,
		FStreamableTextureInstance &	TextureInstance
	)

FStreamableTextureInstance serialize operator.

Parameters

Ar	Archive to to serialize object to/ from
TextureInstance	Object to serialize

Returns

Returns the archive passed in

TrackRenderAsset()

bool TrackRenderAsset

(

const FString &

AssetName

)

Adds a (partial) texture/mesh name to track in the streaming system and updates the .ini setting.

Parameters

AssetName

Partial name of a new texture/mesh to track (not case-sensitive)

Returns

true if the name was added

TrackRenderAssetEvent()

bool TrackRenderAssetEvent	(	FStreamingRenderAsset *	StreamingRenderAsset,
		UStreamableRenderAsset *	RenderAsset,
		bool	bForceMipLevelsToBeResident,
		const FRenderAssetStreamingManager *	Manager
	)

Checks a texture/mesh and tracks it if its name contains any of the tracked render asset names (GTrackedRenderAssetNames).

Parameters

RenderAsset	Texture/mesh to check
bForceMipLEvelsToBeResident	Whether all mip-levels in the texture/mesh are forced to be resident
Manager	can be null

TrackRenderAssetInit()

void TrackRenderAssetInit

(

)

Initializes the texture/mesh tracking. Called when GTrackedRenderAssetsInitialized is false.

UntrackRenderAsset()

bool UntrackRenderAsset

(

const FString &

AssetName

)

Removes a texture/mesh name from being tracked in the streaming system and updates the .ini setting. The name must match an existing tracking name, but isn't case-sensitive.

Parameters

AssetName

Name of a texture/mesh to stop tracking (not case-sensitive)

Returns

true if the name was removed

Variable Documentation

GTrackedRenderAssetEventIndex

int32 GTrackedRenderAssetEventIndex = -1

GTrackedRenderAssetEvents

FTrackedRenderAssetEvent GTrackedRenderAssetEvents[NUM_TRACKEDRENDERASSETEVENTS]

GTrackedRenderAssetNames

TArray<FString> GTrackedRenderAssetNames

List of textures/meshes to track (using stristr for name comparison).

GTrackedRenderAssets

TArray<FTrackedRenderAssetEvent> GTrackedRenderAssets

GTrackedRenderAssetsInitialized

bool GTrackedRenderAssetsInitialized = false