# VkClusterAccelerationStructureIndexFormatFlagBitsNV(3) Manual Page

## Name

VkClusterAccelerationStructureIndexFormatFlagBitsNV - Bits specifying the index type in the index buffer

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## C Specification

Bits that can be set in VkClusterAccelerationStructureBuildTriangleClusterInfoNV::`indexType`, VkClusterAccelerationStructureBuildTriangleClusterInfoNV::`opacityMicromapIndexType`, VkClusterAccelerationStructureBuildTriangleClusterTemplateInfoNV::`indexType` and VkClusterAccelerationStructureBuildTriangleClusterTemplateInfoNV::`opacityMicromapIndexType` specifying the index type is one of:

    // Provided by VK_NV_cluster_acceleration_structure
    typedef enum VkClusterAccelerationStructureIndexFormatFlagBitsNV {
        VK_CLUSTER_ACCELERATION_STRUCTURE_INDEX_FORMAT_8BIT_NV = 0x00000001,
        VK_CLUSTER_ACCELERATION_STRUCTURE_INDEX_FORMAT_16BIT_NV = 0x00000002,
        VK_CLUSTER_ACCELERATION_STRUCTURE_INDEX_FORMAT_32BIT_NV = 0x00000004,
    } VkClusterAccelerationStructureIndexFormatFlagBitsNV;

## Description

- `VK_CLUSTER_ACCELERATION_STRUCTURE_INDEX_FORMAT_8BIT_NV` specifies that 8-bit indices will be used.

- `VK_CLUSTER_ACCELERATION_STRUCTURE_INDEX_FORMAT_16BIT_NV` specifies that 16-bit indices will be used.

- `VK_CLUSTER_ACCELERATION_STRUCTURE_INDEX_FORMAT_32BIT_NV` specifies that 32-bit indices will be used.

## See Also

VK_NV_cluster_acceleration_structure, VkClusterAccelerationStructureIndexFormatFlagsNV

## 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 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0