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> Unreal Engine API Reference > Runtime > RHI > FindRayTracingHitGroupIndex

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FindRayTracingHitGroupIndex

Returns the hit group index within the ray tracing pipeline or INDEX_NONE if given shader does not exist.

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References

Module	RHI
Header	/Engine/Source/Runtime/RHI/Public/PipelineStateCache.h
Include	#include "PipelineStateCache.h"
Source	/Engine/Source/Runtime/RHI/Private/PipelineStateCache.cpp

Syntax

int32 FindRayTracingHitGroupIndex
(
    FRayTracingPipelineState * Pipeline,
    FRHIRayTracingShader * HitGroupShader,
    bool bRequired
)

Remarks

Returns the hit group index within the ray tracing pipeline or INDEX_NONE if given shader does not exist. Asserts if shader is not found but bRequired is true.

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