Skip to content

Latest commit

 

History

History
78 lines (62 loc) · 2.55 KB

VK_KHR_xlib_surface.adoc

File metadata and controls

78 lines (62 loc) · 2.55 KB

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_xlib_surface extension is an instance extension. It provides a mechanism to create a slink:VkSurfaceKHR object (defined by the apiext:VK_KHR_surface extension) that refers to an X11 code:Window, using the Xlib client-side library, as well as a query to determine support for rendering via Xlib.

Issues

1) Does X11 need a way to query for compatibility between a particular physical device and a specific screen? This would be a more general query than flink:vkGetPhysicalDeviceSurfaceSupportKHR; if it returned ename: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 slink: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 (Display*, VisualID) pair.

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

    • Added appropriate X errors.

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

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

    • Renamed this extension from VK_EXT_KHR_x11_surface to VK_EXT_KHR_xlib_surface.

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

    • Renamed from VK_EXT_KHR_xlib_surface to VK_KHR_xlib_surface.

  • Revision 5, 2015-11-03 (Daniel Rakos)

    • Added allocation callbacks to vkCreateXlibSurfaceKHR.

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

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