MTLCommandQueue_id(3)

# MTLCommandQueue_id(3) Manual Page

## Name

MTLCommandQueue_id - Metal MTLCommandQueue type reference

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## C Specification

The type `id<MTLCommandQueue>` is defined in Apple’s Metal framework, but to remove an unnecessary compile-time dependency, an incomplete type definition of `MTLCommandQueue_id` is provided in the Vulkan headers:

    // Provided by VK_EXT_metal_objects
    #ifdef __OBJC__
    @protocol MTLCommandQueue;
    typedef id<MTLCommandQueue> MTLCommandQueue_id;
    #else
    typedef void* MTLCommandQueue_id;
    #endif

## See Also

VK_EXT_metal_objects

## 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 2014-2022 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0