# VkQueueFlagBits(3) Manual Page

## Name

VkQueueFlagBits - Bitmask specifying capabilities of queues in a queue family

## C Specification

Bits which may be set in VkQueueFamilyProperties::`queueFlags` indicating capabilities of queues in a queue family are:

    typedef enum VkQueueFlagBits {
        VK_QUEUE_GRAPHICS_BIT = 0x00000001,
        VK_QUEUE_COMPUTE_BIT = 0x00000002,
        VK_QUEUE_TRANSFER_BIT = 0x00000004,
        VK_QUEUE_SPARSE_BINDING_BIT = 0x00000008,
        VK_QUEUE_PROTECTED_BIT = 0x00000010,
        VK_QUEUE_FLAG_BITS_MAX_ENUM = 0x7FFFFFFF
    } VkQueueFlagBits;

## Description

- `VK_QUEUE_GRAPHICS_BIT` specifies that queues in this queue family support graphics operations.

- `VK_QUEUE_COMPUTE_BIT` specifies that queues in this queue family support compute operations.

- `VK_QUEUE_TRANSFER_BIT` specifies that queues in this queue family support transfer operations.

- `VK_QUEUE_SPARSE_BINDING_BIT` specifies that queues in this queue family support sparse memory management operations (see Sparse Resources). If any of the sparse resource features are enabled, then at least one queue family must support this bit.

- if `VK_QUEUE_PROTECTED_BIT` is set, then the queues in this queue family support the `VK_DEVICE_QUEUE_CREATE_PROTECTED_BIT` bit. (see Protected Memory). If the protected memory physical device feature is supported, then at least one queue family of at least one physical device exposed by the implementation must support this bit.

If an implementation exposes any queue family that supports graphics operations, at least one queue family of at least one physical device exposed by the implementation must support both graphics and compute operations.

Furthermore, if the protected memory physical device feature is supported, then at least one queue family of at least one physical device exposed by the implementation must support graphics operations, compute operations, and protected memory operations.

| Note All commands that are allowed on a queue that supports transfer operations are also allowed on a queue that supports either graphics or compute operations. Thus, if the capabilities of a queue family include `VK_QUEUE_GRAPHICS_BIT` or `VK_QUEUE_COMPUTE_BIT`, then reporting the `VK_QUEUE_TRANSFER_BIT` capability separately for that queue family is optional.

For further details see Queues.

## See Also

VkQueueFlags

## 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 (c) 2014-2020 Khronos Group. This work is licensed under a Creative Commons Attribution 4.0 International License.