# VkExportMetalCommandQueueInfoEXT(3) Manual Page

## Name

VkExportMetalCommandQueueInfoEXT - Structure that identifies a VkQueue object and corresponding Metal MTLCommandQueue object

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## C Specification

To export the Metal `MTLCommandQueue` object underlying a VkQueue object, include a `VkExportMetalCommandQueueInfoEXT` structure in the `pNext` chain of the `pMetalObjectsInfo` parameter of a vkExportMetalObjectsEXT call.

The `VkExportMetalCommandQueueInfoEXT` structure is defined as:

    // Provided by VK_EXT_metal_objects
    typedef struct VkExportMetalCommandQueueInfoEXT {
        VkStructureType       sType;
        const void*           pNext;
        VkQueue               queue;
        MTLCommandQueue_id    mtlCommandQueue;
    } VkExportMetalCommandQueueInfoEXT;

## Members

- `sType` is a VkStructureType value identifying this structure.

- `pNext` is `NULL` or a pointer to a structure extending this structure.

- `queue` is a VkQueue.

- `mtlCommandQueue` is the Metal `id<MTLCommandQueue>` object underlying the VkQueue object in `queue`. The implementation will return the `MTLCommandQueue` in this member, or it will return `NULL` if no `MTLCommandQueue` could be found underlying the VkQueue object.

## Description

Valid Usage (Implicit)

- VUID-VkExportMetalCommandQueueInfoEXT-sType-sType
  `sType` must be `VK_STRUCTURE_TYPE_EXPORT_METAL_COMMAND_QUEUE_INFO_EXT`

- VUID-VkExportMetalCommandQueueInfoEXT-queue-parameter
  `queue` must be a valid VkQueue handle

## See Also

VK_EXT_metal_objects, VkQueue, VkStructureType

## 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 2014-2024 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0