94 lines
2.8 KiB
Plaintext
94 lines
2.8 KiB
Plaintext
// Copyright (c) 2014-2017 Khronos Group. This work is licensed under a
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// Creative Commons Attribution 4.0 International License; see
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// http://creativecommons.org/licenses/by/4.0/
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include::meta/VK_KHR_xcb_surface.txt[]
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*Last Modified Date*::
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2015-11-28
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Patrick Doane, Blizzard
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- Jason Ekstrand, Intel
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- Ian Elliott, LunarG
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- Courtney Goeltzenleuchter, LunarG
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- Jesse Hall, Google
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- James Jones, NVIDIA
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- Antoine Labour, Google
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- Jon Leech, Khronos
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- David Mao, AMD
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- Norbert Nopper, Freescale
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- Alon Or-bach, Samsung
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- Daniel Rakos, AMD
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- Graham Sellers, AMD
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- Ray Smith, ARM
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- Jeff Vigil, Qualcomm
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- Chia-I Wu, LunarG
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The +VK_KHR_xcb_surface+ extension is an instance extension.
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It provides a mechanism to create a slink:VkSurfaceKHR object (defined by
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the +VK_KHR_surface extension+) that refers to an X11 code:Window, using the
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XCB client-side library, as well as a query to determine support for
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rendering via XCB.
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=== New Object Types
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None
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=== New Enum Constants
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* Extending elink:VkStructureType:
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** ename:VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR
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=== New Enums
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None
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=== New Structures
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* slink:VkXcbSurfaceCreateInfoKHR
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=== New Functions
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* flink:vkCreateXcbSurfaceKHR
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* flink:vkGetPhysicalDeviceXcbPresentationSupportKHR
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=== Issues
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1) Does XCB need a way to query for compatibility between a particular
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physical device and a specific screen? This would be a more general query
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than flink:vkGetPhysicalDeviceSurfaceSupportKHR: If it returned true, then
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the physical device could be assumed to support presentation to any window
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on that screen.
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*RESOLVED*: Yes, this is needed for toolkits that want to create a
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slink:VkDevice before creating a window.
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To ensure the query is reliable, it must be made against a particular X
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visual rather than the screen in general.
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=== Version History
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* Revision 1, 2015-09-23 (Jesse Hall)
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- Initial draft, based on the previous contents of VK_EXT_KHR_swapchain
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(later renamed VK_EXT_KHR_surface).
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* Revision 2, 2015-10-02 (James Jones)
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- Added presentation support query for an (xcb_connection_t*,
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xcb_visualid_t) pair.
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- Removed "root" parameter from CreateXcbSurfaceKHR(), as it is redundant
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when a window on the same screen is specified as well.
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- Adjusted wording of issue #1 and added agreed upon resolution.
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* Revision 3, 2015-10-14 (Ian Elliott)
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- Removed "root" parameter from CreateXcbSurfaceKHR() in one more place.
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* Revision 4, 2015-10-26 (Ian Elliott)
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- Renamed from VK_EXT_KHR_xcb_surface to VK_KHR_xcb_surface.
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* Revision 5, 2015-10-23 (Daniel Rakos)
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- Added allocation callbacks to vkCreateXcbSurfaceKHR.
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* Revision 6, 2015-11-28 (Daniel Rakos)
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- Updated the surface create function to take a pCreateInfo structure.
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