# VK_KHR_xcb_surface(3) Manual Page

## Name

VK_KHR_xcb_surface - instance extension

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## Registered Extension Number

6

## Revision

6

## Ratification Status

Ratified

## Extension and Version Dependencies

VK_KHR_surface

## Contact

- Jesse Hall [GitHub]critsec

- Ian Elliott [GitHub]ianelliottus

## Other Extension Metadata

Last Modified Date

  2015-11-28

IP Status

  No known IP claims.

Contributors

  - Patrick Doane, Blizzard

  - Faith Ekstrand, Intel

  - Ian Elliott, LunarG

  - Courtney Goeltzenleuchter, LunarG

  - Jesse Hall, Google

  - James Jones, NVIDIA

  - Antoine Labour, Google

  - Jon Leech, Khronos

  - David Mao, AMD

  - Norbert Nopper, Freescale

  - Alon Or-bach, Samsung

  - Daniel Rakos, AMD

  - Graham Sellers, AMD

  - Ray Smith, ARM

  - Jeff Vigil, Qualcomm

  - Chia-I Wu, LunarG

## Description

The `VK_KHR_xcb_surface` extension is an instance extension. It provides a mechanism to create a VkSurfaceKHR object (defined by the `VK_KHR_surface` extension) that refers to an X11 `Window`, using the XCB client-side library, as well as a query to determine support for rendering via XCB.

## New Commands

- vkCreateXcbSurfaceKHR

- vkGetPhysicalDeviceXcbPresentationSupportKHR

## New Structures

- VkXcbSurfaceCreateInfoKHR

## New Bitmasks

- VkXcbSurfaceCreateFlagsKHR

## New Enum Constants

- `VK_KHR_XCB_SURFACE_EXTENSION_NAME`

- `VK_KHR_XCB_SURFACE_SPEC_VERSION`

- Extending VkStructureType:

  - `VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR`

## Issues

1) Does XCB need a way to query for compatibility between a particular physical device and a specific screen? This would be a more general query than vkGetPhysicalDeviceSurfaceSupportKHR: If it returned `VK_TRUE`, then the physical device could be assumed to support presentation to any window on that screen.

RESOLVED: Yes, this is needed for toolkits that want to create a VkDevice before creating a window. To ensure the query is reliable, it must be made against a particular X visual rather than the screen in general.

## Version History

- Revision 1, 2015-09-23 (Jesse Hall)

  - Initial draft, based on the previous contents of VK_EXT_KHR_swapchain (later renamed VK_EXT_KHR_surface).

- Revision 2, 2015-10-02 (James Jones)

  - Added presentation support query for an (xcb_connection_t*, xcb_visualid_t) pair.

  - Removed “root” parameter from CreateXcbSurfaceKHR(), as it is redundant when a window on the same screen is specified as well.

  - Adjusted wording of issue #1 and added agreed upon resolution.

- Revision 3, 2015-10-14 (Ian Elliott)

  - Removed “root” parameter from CreateXcbSurfaceKHR() in one more place.

- Revision 4, 2015-10-26 (Ian Elliott)

  - Renamed from VK_EXT_KHR_xcb_surface to VK_KHR_xcb_surface.

- Revision 5, 2015-10-23 (Daniel Rakos)

  - Added allocation callbacks to vkCreateXcbSurfaceKHR.

- Revision 6, 2015-11-28 (Daniel Rakos)

  - Updated the surface create function to take a pCreateInfo structure.

## See Also

No cross-references are available

## Document Notes

For more information, see the Vulkan Specification

This page is a generated document. Fixes and changes should be made to the generator scripts, not directly.

## Copyright

Copyright 2014-2025 The Khronos Group Inc.

SPDX-License-Identifier: CC-BY-4.0