static int32 SortAndCullIndices ( const [FNiagaraGPUSortInfo](API\Plugins\Niagara\FNiagaraGPUSortInfo) & SortInfo, const [FNiagaraDataBuffer](API\Plugins\Niagara\FNiagaraDataBuffer) & Buffer, [FGlobalDynamicReadBuffer::FAllocation](API\Runtime\RenderCore\FGlobalDynamicReadBuffer\FAllocation) & OutIndices )