UNiagaraDataInterfaceVolumeCache | Unreal Engine 5.2 Documentation

Inheritance Hierarchy

References


Module	Niagara
Header	/Engine/Plugins/FX/Niagara/Source/Niagara/Classes/NiagaraDataInterfaceVolumeCache.h
Include	#include "NiagaraDataInterfaceVolumeCache.h"

Syntax

UCLASS&40;EditInlineNew, Category&61;"Grid", CollapseCategories, Meta&61;&40;DisplayName&61;"Volume Cache"&41;,  
       MinimalAPI&41;  
class UNiagaraDataInterfaceVolumeCache : public UNiagaraDataInterface

Variables

	Type	Name	Description
	TMap< FNiagaraSystemInstanceID, FVolumeCacheInstanceData_GameThread * >	SystemInstancesToProxyData_GT
	TObjectPtr< UVolumeCache >	VolumeCache

Constructors

	Type	Name	Description
		UNiagaraDataInterfaceVolumeCache ( const FObjectInitializer& ObjectInitializer )

Functions

	Type	Name	Description
	FString	GetAssetPath ( FString PathFormat, int32 FrameIndex )
	void	GetNumCells ( FVectorVMExternalFunctionContext& Context )
	void	ReadFile ( FVectorVMExternalFunctionContext& Context )
	void	SetFrame ( FVectorVMExternalFunctionContext& Context )

Overridden from UNiagaraDataInterface

Type	Name	Description
bool	AppendCompileHash ( FNiagaraCompileHashVisitor* InVisitor )	Allows the generic class defaults version of this class to specify any dependencies/version/etc that might invalidate the compile.
bool	CanExecuteOnTarget ( ENiagaraSimTarget Target )
bool	CopyToInternal ( UNiagaraDataInterface* Destination )
void	DestroyPerInstanceData ( void* PerInstanceData, FNiagaraSystemInstance* SystemInstance )	Destroys the per instance data for this interface.
bool	Equals ( const UNiagaraDataInterface* Other )	Determines if this DataInterface is the same as another.
bool	GetFunctionHLSL ( const FNiagaraDataInterfaceGPUParamInfo& ParamInfo, const FNiagaraDataInterfaceGeneratedFunction& FunctionInfo, int FunctionInstanceIndex, FString& OutHLSL )
void	GetFunctions ( TArray< FNiagaraFunctionSignature >& OutFunctions )	Gets all the available functions for this data interface.
void	GetParameterDefinitionHLSL ( const FNiagaraDataInterfaceGPUParamInfo& ParamInfo, FString& OutHLSL )
void	GetVMExternalFunction ( const FVMExternalFunctionBindingInfo& BindingInfo, void* InstanceData, FVMExternalFunction& OutFunc )	Returns the delegate for the passed function signature.
bool	HasPreSimulateTick ()
bool	InitPerInstanceData ( void* PerInstanceData, FNiagaraSystemInstance* SystemInstance )	Initializes the per instance data for this interface.
int32	PerInstanceDataSize ()	Returns the size of the per instance data for this interface.
bool	PerInstanceTick ( void* PerInstanceData, FNiagaraSystemInstance* SystemInstance, float DeltaSeconds )	Ticks the per instance data for this interface, if it has any.
void	ProvidePerInstanceDataForRenderThread ( void* DataForRenderThread, void* PerInstanceData, const FNiagaraSystemInstanceID& SystemInstance )	Subclasses that wish to work with GPU systems/emitters must implement this.
void	SetShaderParameters ( const FNiagaraDataInterfaceSetShaderParametersContext& Context )	Set the shader parameters will only be called if the data interface provided shader parameters.

Overridden from UNiagaraDataInterfaceBase

	Type	Name	Description
	void	BuildShaderParameters ( FNiagaraShaderParametersBuilder& ShaderParametersBuilder )	Override this method to provide parameters to the GPU (SRV / UAV / Constants / etc) The most common usage will be to provide a single structure which is nested with other parameters.