VK_LUID_SIZE(3)

# VK_LUID_SIZE(3) Manual Page

## Name

VK_LUID_SIZE - Length of a locally unique device identifier

## C Specification

VK_LUID_SIZE is the length in `uint8_t` values of an array containing a locally unique device identifier, as returned in VkPhysicalDeviceIDProperties::`deviceLUID`.

    #define VK_LUID_SIZE                      8U

    #define VK_LUID_SIZE_KHR                  VK_LUID_SIZE

## See Also

VK_KHR_external_fence_capabilities, VK_KHR_external_memory_capabilities, VK_KHR_external_semaphore_capabilities, VK_VERSION_1_1

## 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