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  3. FNiagaraGPUSystemTick

FNiagaraGPUSystemTick

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

API > API/Plugins > API/Plugins/Niagara

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

  Type Name Description
Public variable bool bHasInterpolatedParameters  
Public variable bool bHasMultipleStages  
Public variable bool bIsFinalTick  
Public variable FNiagaraComputeDataInterfaceInstanceData * DIInstanceData  
Public variable TArray< FUniformBufferRHIRef > ExternalUnformBuffers_RT Transient data used by the RT.
Public variable uint8 * GlobalParamData  
Public variable uint32 InstanceCount  
Public variable uint8 * InstanceData_ParamData_Packed  
Public variable TConstArrayView< FNiagaraComputeInstanceData > InstanceDataDebuggingOnly Debugging only.
Public variable uint8 * OwnerParamData  
Public variable FNiagaraSystemGpuComputeProxy * SystemGpuComputeProxy  
Public variable FNiagaraSystemInstanceID SystemInstanceID Data assigned by GT
Public variable uint8 * SystemParamData  
Public variable uint32 TotalDispatches  

Functions

  Type Name Description
Public function void  
Public function void

Destroy ()

  
Public function Const void

GetEmitterParameters ( const FNiagaraComputeInstanceData& InstanceData,
void* OutputParameters
)

  
Public function Const FRHIUniformBuffer *

GetExternalUniformBuffer ( const FNiagaraComputeInstanceData& InstanceData,
bool bPrevious
)

  
Public function Const void

GetGlobalParameters ( const FNiagaraComputeInstanceData& InstanceData,
void* OutputParameters
)

  
Public function Const TArrayView< FNiagaraComputeInstanceData >  
Public function Const void

GetOwnerParameters ( const FNiagaraComputeInstanceData& InstanceData,
void* OutputParameters
)

  
Public function Const void

GetSystemParameters ( const FNiagaraComputeInstanceData& InstanceData,
void* OutputParameters
)

  
Public function void

Init ( FNiagaraSystemInstance* InSystemInstance
)

  

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