1. Epic GamesDeveloper
  3. FPCGContext

FPCGContext

API > API/Plugins > API/Plugins/PCG

   
Name FPCGContext
Type struct
Header File /Engine/Plugins/PCG/Source/PCG/Public/PCGContext.h
Include Path #include "PCGContext.h"

Syntax

USTRUCT (BlueprintType )  
struct FPCGContext

Derived Classes

FPCGContext derived class hierarchy

Constructors

Name Remarks Include Path Unreal Specifiers
  PCGContext.h  
  PCGContext.h  

PRAGMA_DISABLE_DEPRECATION_WARNINGS FPCGContext ()

 Note: We need to explicitly disable warnings on these constructors/operators for clang to be happy with deprecated variables. PCGContext.h  

Destructors

Name Remarks Include Path Unreal Specifiers

virtual ~FPCGContext()

   PCGContext.h  

Classes

Name Remarks
FSharedContext  

Variables

Public

Name Type Remarks Include Path Unreal Specifiers
AsyncState FPCGAsyncState   PCGContext.h  
bInputDataModified bool Used to track when data transformations (such as CPU readback) occurred on the input data collection as part of the element prepare data. PCGContext.h  
bIsPaused bool   PCGContext.h  
CachedInputToOutputInternalResults TArray< TPair< FPCGDataCollection, FPCGDataCollection > >   PCGContext.h  
CompiledTaskId FPCGTaskId   PCGContext.h  
CurrentPhase EPCGExecutionPhase   PCGContext.h  
DependenciesCrc FPCGCrc   PCGContext.h  
DynamicDependencies TSet< FPCGTaskId >   PCGContext.h  
ExecutionSource TWeakInterfacePtr< IPCGGraphExecutionSource >   PCGContext.h  
InputData FPCGDataCollection   PCGContext.h  
Node const UPCGNode * TODO: replace this by a better identification mechanism. PCGContext.h  
OutputData FPCGDataCollection   PCGContext.h  
SourceComponent TWeakObjectPtr< UPCGComponent >   PCGContext.h  
Stack const FPCGStack *   PCGContext.h  
TaskId FPCGTaskId   PCGContext.h  

Protected

Name Type Remarks Include Path Unreal Specifiers
AsyncObjects TSet< TObjectPtr< UObject > > List of objects created by the PCG Elements, we need to track them so we can remove their Async flags when storing results on main thread so that they can be considered as existing on the main thread (and get properly GCed) PCGContext.h  
bOverrideSettingsOnMainThread bool If the settings need to be overridden on the main thread (because we have to load objects) PCGContext.h  
GraphExecutor TWeakPtr< FPCGGraphExecutor > Graph Executor that scheduled the task. PCGContext.h  
Handle TSharedPtr< FPCGContextHandle > Lazy initialized shared handle pointer that can be used in lambda captures to test if Context is still valid before accessing it. PCGContext.h  
OverriddenParams TArray< const FPCGSettingsOverridableParam * > List of params that were in effect overriden. PCGContext.h  
SettingsWithOverride TObjectPtr< UPCGSettings >   PCGContext.h  
StackHandle FPCGStackHandle Handle for the current call stack. PCGContext.h  
Timer PCGUtils::FCallTime   PCGContext.h  

Functions

Public

Name Remarks Include Path Unreal Specifiers

virtual void AddExtraStructReferencedObjects ( FReferenceCollector& Collector
)

   PCGContext.h  
Gathers references to objects to prevent them from being garbage collected. PCGContext.h  

bool CanExecuteOnlyOnMainThread()

   PCGContext.h  

void ClearOutputData ( FPCGTaskId InTaskId
)

   PCGContext.h  

bool ContainsAsyncObject ( const UObject* InAsyncObject
)

   PCGContext.h  

FString GetComponentName()

   PCGContext.h  

FString GetExecutionSourceName()

   PCGContext.h  

bool GetFromCache ( const FPCGGetFromCacheParams& Params,
FPCGDataCollection& OutOutput
) const

   PCGContext.h  

FPCGTaskId GetGraphExecutionTaskId()

   PCGContext.h  

const SettingsType * GetInputSettings ()

 Return the settings casted in the wanted type. PCGContext.h  

const UPCGSettingsInterface * GetInputSettingsInterface()

   PCGContext.h  

TWeakPtr< FPCGContextHandle > GetOrCreateHandle()

 This is not thread safe, make sure it is not called concurrently on the same context. PCGContext.h  

const SettingsType * GetOriginalSettings ()

 Caution: most use cases should use GetInputSettings, because they contain the overridden values. PCGContext.h  

bool GetOutputData ( FPCGTaskId InTaskId,
FPCGDataCollection& OutData
)

   PCGContext.h  

int GetSeed()

 Return the seed, possibly overriden by params, and combined with the source component (if any). PCGContext.h  

const FPCGStack * GetStack()

 Get the current call stack. PCGContext.h  

AActor * GetTargetActor ( const UPCGSpatialData* InSpatialData
) const

   PCGContext.h  

FString GetTaskName()

   PCGContext.h  

bool HasVisualLogs()

 True if any issues were logged during last execution. PCGContext.h  

void InitFromParams ( const FPCGInitializeElementParams& InParams
)

   PCGContext.h  

void InitializeSettings ( bool bSkipPostLoad
)

 After initializing the context, we can call this method to prepare for parameter override It will create a copy of the original settings if there is indeed a possible override. PCGContext.h  

virtual bool IsComputeContext()

 Is this a context for the compute graph element. PCGContext.h  

bool IsValueOverriden ( const FName PropertyName
)

 Returns true if the given property has been overriden. PCGContext.h  

void LogVisual ( ELogVerbosity::Type InVerbosity,
const FText& InMessage
) const

 Log warnings and errors to be displayed on node in graph editor. PCGContext.h  

void OverrideSettings()

 If we any any parameter override, it will read from the params and override matching values in the settings copy. PCGContext.h  

FPCGTaskId ScheduleGeneric ( const FPCGScheduleGenericParams& InParams
)

   PCGContext.h  

FPCGTaskId ScheduleGraph ( const FPCGScheduleGraphParams& InParams
)

   PCGContext.h  

bool ShouldStop()

   PCGContext.h  

void StoreInCache ( const FPCGStoreInCacheParams& Params,
const FPCGDataCollection& InOutput
)

   PCGContext.h  

virtual bool TimeSliceIsEnabled()

 Time slicing is not enabled by default. PCGContext.h  

Protected

Name Remarks Include Path Unreal Specifiers

virtual UObject * GetExternalContainerForOverridableParam ( const FPCGSettingsOverridableParam& InParam
)

   PCGContext.h  

virtual void * GetUnsafeExternalContainerForOverridableParam ( const FPCGSettingsOverridableParam& InParam
)

   PCGContext.h  

void InitializeGraphExecutor ( FPCGContext* InContext
)

   PCGContext.h  

Static

Name Remarks Include Path Unreal Specifiers

static ContextType * GetContextFromHandle ( TWeakPtr< FPCGContextHandle > WeakHandle
)

   PCGContext.h  

static TSubclassOf< UPCGBasePointData > GetDefaultPointDataClass()

 Like NewPointData_AnyThread, gets the class used for point data depending on the same CVar. PCGContext.h  

static bool IsInitializingSettings()

   PCGContext.h  

static T * NewObject_AnyThread ( FPCGContext* Context,
Args&&... InArgs
)

 Allows creating a new object safely inside the execution of a PCG Element, this object will also get tracked properly by the context. PCGContext.h  

static UPCGBasePointData * NewPointData_AnyThread ( FPCGContext* Context
)

 Temporary so that we can toggle between UPCGPointData and UPCGPointArrayData with a CVar. PCGContext.h  

static void Release ( FPCGContext* InContext
)

   PCGContext.h  

Operators

Name Remarks Include Path Unreal Specifiers
  PCGContext.h  
  PCGContext.h  

Ask questions and help your peers Developer Forums

Write your own tutorials or read those from others Learning Library

On this page