Unreal Engine 4.26 Documentation

Unreal Engine 4.27 Documentation

Unreal Engine 5.0 Documentation

Unreal Engine 5.1 Documentation

Unreal Engine 5.2 Documentation

Unreal Engine 5.3 Documentation

> Unreal Engine API Reference > Plugins > Niagara > FNiagaraGPUSystemTick

Light Theme

Dark Theme

FNiagaraGPUSystemTick

Represents all the information needed to dispatch a single tick of a [FNiagaraSystemInstance](API\Plugins\Niagara\FNiagaraSystemInstance).

Windows

MacOS

Linux

References

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

Syntax

class FNiagaraGPUSystemTick

Remarks

Represents all the information needed to dispatch a single tick of a FNiagaraSystemInstance. This object will be created on the game thread and passed to the renderthread.

It contains the PerInstance data buffer for every DataInterface referenced by the system as well as the Data required to dispatch updates for each Emitter in the system.

DataInterface data is packed tightly. It includes a TMap that associates the data interface with the offset into the packed buffer. At that offset is the Per-Instance data for this System.

InstanceData_ParamData_Packed packs FNiagaraComputeInstanceData and ParamData into one buffer. There is padding after the array of FNiagaraComputeInstanceData so we can upload ParamData directly into a UniformBuffer (it is 16 byte aligned).

Variables

	Name	Description
bool	bIsFinalTick
FNiagaraCompute...	DIInstanceData
uint8 *	GlobalParamData
uint32	InstanceCount
uint8 *	InstanceData_ParamData_Packed
TConstArrayView...	InstanceDataDebuggingOnly	Debugging only.
uint32	NumInstancesWithSimStages
uint8 *	OwnerParamData
FNiagaraSystemG...	SystemGpuComputeProxy
FNiagaraSystemI...	SystemInstanceID	Data assigned by GT
uint8 *	SystemParamData
uint32	TotalDispatches
TArray< FUnifor...	UniformBuffers	Transient data used by the RT.

Functions

		Name	Description
	void	Destroy()
	TArrayView< ...	GetInstances()
	FUniformBuff...	GetUniformBuffer ( EUniformBufferType Type, const FNiagaraComputeInstanceData&..., bool Previous )
	const uint8 ...	GetUniformBufferSource ( EUniformBufferType Type, const FNiagaraComputeInstanceData&..., bool Previous )
	void	Init ( FNiagaraSystemInstance* InSyst... )

Enums

	Name	Description
	EUniformBufferType

Help shape the future of Unreal Engine documentation! Tell us how we're doing so we can serve you better.

Take our survey

Dismiss