ClusterIDNV(3)

# ClusterIDNV(3) Manual Page

## Name

ClusterIDNV - Contains the triangle cluster ID of a hit triangle in cluster acceleration structure

## Description

`ClusterIDNV`

  A variable decorated with the `ClusterIDNV` decoration will contain the triangle cluster ID of a hit triangle in a cluster acceleration structure if the current ray hit a triangle primitive or `-1` otherwise.

Valid Usage

- VUID-ClusterIDNV-ClusterIDNV-10531
  The `ClusterIDNV` decoration must be used only within the `AnyHitKHR`, or `ClosestHitKHR` `Execution` `Model`

- VUID-ClusterIDNV-ClusterIDNV-10532
  The variable decorated with `ClusterIDNV` must be declared using the `Input` `Storage` `Class`

- VUID-ClusterIDNV-ClusterIDNV-10533
  The variable decorated with `ClusterIDNV` must be declared as a scalar 32-bit integer value

## See Also

No cross-references are available

## Document Notes

For more information, see the Vulkan Specification.

This page is extracted from the Vulkan Specification. Fixes and changes should be made to the Specification, not directly.

## Copyright

Copyright 2014-2026 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0