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  3. IStreamingManager

IStreamingManager

Pure virtual base class of a streaming manager.

API > API/Runtime > API/Runtime/Engine

Pure virtual base class of a streaming manager.

   
Name IStreamingManager
Type struct
Header File /Engine/Source/Runtime/Engine/Public/ContentStreaming.h
Include Path #include "ContentStreaming.h"

Syntax

struct IStreamingManager

Derived Classes

IStreamingManager derived class hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers

IStreamingManager()

   ContentStreaming.h  

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~IStreamingManager()

 Virtual destructor ContentStreaming.h  

Structs

Name Remarks
FSecondaryLocation  

Constants

Name Type Remarks Include Path
bPendingRemoveViews bool Set when Tick() has been called. ContentStreaming.h
CurrentViewInfos TArray< FStreamingViewInfo > Current collection of views that need to be taken into account for streaming. ContentStreaming.h
LastingViewInfos TArray< FStreamingViewInfo > Views that stick around for a while. Override views are ignored if no movie is playing. ContentStreaming.h
PendingViewInfos TArray< FStreamingViewInfo > Pending views. Emptied every frame. ContentStreaming.h
SecondaryLocations TArray< FSecondaryLocation > Collection of view locations that will be added at the next call to AddViewInformation. ContentStreaming.h

Functions

Public

Name Remarks Include Path Unreal Specifiers

void AddLevel ( ULevel* Level
)

 Adds a ULevel that has already prepared StreamingData to the streaming manager. ContentStreaming.h  

void AddViewInformation ( const FVector& ViewOrigin,
float ScreenSize,
float FOVScreenSize,
float BoostFactor,
bool bOverrideLocation,
float Duration,
TWeakObjectPtr< AActor > InActorToBoost,
TWeakObjectPtr< UWorld > InWorld
)

 Adds the passed in view information to the static array. ContentStreaming.h  

void AddViewLocation ( const FVector& Location,
float BoostFactor,
bool bOverrideLocation,
float Duration
)

 Queue up view locations to the streaming system. ContentStreaming.h  

int32 BlockTillAllRequestsFinished ( float TimeLimit,
bool bLogResults
)

 Blocks till all pending requests are fulfilled. ContentStreaming.h  

void CancelForcedResources()

 Cancels the timed Forced resources (i.e used the Kismet action "Stream In Textures"). ContentStreaming.h  

virtual bool Exec ( UWorld* InWorld,
const TCHAR* Cmd,
FOutputDevice& Ar
)

 Allows the streaming manager to process exec commands. ContentStreaming.h  

int32 GetNumViews()

 Returns the number of view infos. ContentStreaming.h  

virtual int32 GetNumWantingResources()

 Returns the number of resources that currently wants to be streamed in. ContentStreaming.h  

virtual int32 GetNumWantingResourcesID ()

 Returns the current ID for GetNumWantingResources(). ContentStreaming.h  

const FStreamingViewInfo & GetViewInformation ( int32 ViewIndex
) const

 Returns the view info by the specified index. ContentStreaming.h  

virtual void NotifyActorDestroyed ( AActor* Actor
)

 Called when a spawned actor is destroyed. ContentStreaming.h  

void NotifyLevelChange()

 Notifies manager of "level" change. ContentStreaming.h  

void NotifyLevelOffset ( ULevel* Level,
const FVector& Offset
)

 Notifies manager that level primitives were shifted ContentStreaming.h  

virtual void NotifyPrimitiveDetached ( const UPrimitiveComponent* Primitive
)

 Called when a primitive is detached from an actor or another component. ContentStreaming.h  

virtual void NotifyPrimitiveUpdated ( const UPrimitiveComponent* Primitive
)

 Called when a primitive streaming data needs to be updated. ContentStreaming.h  

virtual void NotifyPrimitiveUpdated_Concurrent ( const UPrimitiveComponent* Primitive
)

 Called when a primitive streaming data needs to be updated in the last stage of the frame. ContentStreaming.h  

virtual void OnAudioStreamingParamsChanged()

   ContentStreaming.h  

virtual void PropagateLightingScenarioChange()

 Propagates a change to the active lighting scenario. ContentStreaming.h  

void RemoveLevel ( ULevel* Level
)

 Removes a ULevel from the streaming manager. ContentStreaming.h  
Removes streaming views from the streaming manager. ContentStreaming.h  

void SetDisregardWorldResourcesForFrames ( int32 NumFrames
)

 Don't stream world resources for the next NumFrames. ContentStreaming.h  

virtual int32 StreamAllResources ( float TimeLimit
)

 Streams in/out all resources that wants to and blocks until it's done. ContentStreaming.h  

virtual void Tick ( float DeltaTime,
bool bProcessEverything
)

 Calls UpdateResourceStreaming(), and does per-frame cleaning. Call once per frame. ContentStreaming.h  

void UpdateResourceStreaming ( float DeltaTime,
bool bProcessEverything
)

 Updates streaming, taking into account all current view infos. ContentStreaming.h  

Protected

Name Remarks Include Path Unreal Specifiers

void SetupViewInfos ( float DeltaTime
)

 Sets up the CurrentViewInfos array based on PendingViewInfos, LastingViewInfos and SecondaryLocations. ContentStreaming.h  

Static

Name Remarks Include Path Unreal Specifiers

static void AddViewInfoToArray ( TArray< FStreamingViewInfo >& ViewInfos,
const FVector& ViewOrigin,
float ScreenSize,
float FOVScreenSize,
float BoostFactor,
bool bOverrideLocation,
float Duration,
TWeakObjectPtr< AActor > InActorToBoost,
TWeakObjectPtr< UWorld > InWorld
)

 Adds the passed in view information to the static array. ContentStreaming.h  
  ContentStreaming.h  

static FStreamingManagerCollection * Get_Concurrent()

 Same as get but could fail if state not allocated or shutdown. ContentStreaming.h  

static bool HasShutdown()

 Checks if the streaming manager has already been shut down. ContentStreaming.h  

static void RemoveViewInfoFromArray ( TArray< FStreamingViewInfo >& ViewInfos,
const FVector& ViewOrigin
)

 Remove view infos with the same location from the given array. ContentStreaming.h  

static void Shutdown()

   ContentStreaming.h  

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