E.10. VK_KHR_xcb_surface

Name String
VK_KHR_xcb_surface
Extension Type
Instance extension
Registered Extension Number
6
Last Modified Date
11/28/2015
Revision
6
IP Status
No known IP claims.
Dependencies
  • This extension is written against revision 1.0 of the Vulkan API.
  • This extension requires VK_KHR_surface.
Contributors
  • Patrick Doane, Blizzard
  • Jason 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
Contacts
  • Jesse Hall, Google
  • Ian Elliott, LunarG

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.

E.10.1. New Object Types

None

E.10.2. New Enum Constants

  • Extending VkStructureType:

    • VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR

E.10.3. New Enums

None

E.10.4. New Structures

E.10.5. New Functions

E.10.6. 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 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.

E.10.7. 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 presention 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.