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API > API/Plugins > API/Plugins/NiagaraShader > API/Plugins/NiagaraShader/FNiagaraAsyncGpuTraceProvider
Hash table. PrimIdHashTable is the main hash table that maps GPUSceneInstanceIndex to and Index we can use to store Collision Groups inside HashToCollisionGroups.
| Name | FCollisionGroupHashMap |
| Type | struct |
| Header File | /Engine/Plugins/FX/Niagara/Source/NiagaraShader/Public/NiagaraAsyncGpuTraceProvider.h |
| Include Path | #include "NiagaraAsyncGpuTraceProvider.h" |
Syntax
struct FCollisionGroupHashMap
Variables
Public
| Name | Type | Remarks | Include Path | Unreal Specifiers |
|---|---|---|---|---|
| HashTableSize | uint32 | NiagaraAsyncGpuTraceProvider.h | ||
| HashToCollisionGroups | FRWBuffer | NiagaraAsyncGpuTraceProvider.h | ||
| PrimIdHashTable | FRWBufferStructured | NiagaraAsyncGpuTraceProvider.h |