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933a3a3c4a
* Update release number to 78.
Public Issues:
* Change markup so parameter descriptions include links to structures,
instead of just their names (public issue 697).
* Resume publishing updated Vulkan 1.0 + KHR extensions and Vulkan 1.0 +
all extensions versions of the specification (public issue 722).
* Reapply fixes from public pull request 698 for
`VK_ANDROID_external_memory_android_hardware_buffer`, which accidentally
were reverted at some point (public pull request 724).
* Fix undefined format valid usage statements for slink:VkImageCreateInfo
in the presence of the
`VK_ANDROID_external_memory_android_hardware_buffer` extension (public
pull request 725).
* Miscellaneous markup consistency fixes (public pull request 728).
Internal Issues:
* When building specifications containing vendor extensions, add terms to
the Khronos spec copyright specifying that the result is not a ratified
specification (internal issue 739).
* Change the value of the
pname:maxDescriptorSetUpdateAfterBindUniformBuffers minimum limit to 72
(6 times pname:maxPerStageDescriptorUpdateAfterBindUniformBuffers) in
the <<features-limits-required, Required Limits>> table (internal issue
1300).
Other Issues:
* Fix link to resource image view compatibility table in the valid usage
statements for slink:VkImageFormatListCreateInfoKHR (internal pull
request 2711).
87 lines
3.4 KiB
Plaintext
87 lines
3.4 KiB
Plaintext
// Copyright (c) 2014-2018 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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[[platformCreateSurface_xcb,platformCreateSurface_xcb]]
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=== XCB Platform
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[open,refpage='vkCreateXcbSurfaceKHR',desc='Create a slink:VkSurfaceKHR object for a X11 window, using the XCB client-side library',type='protos']
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--
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To create a sname:VkSurfaceKHR object for an X11 window, using the XCB
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client-side library, call:
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include::../../api/protos/vkCreateXcbSurfaceKHR.txt[]
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* pname:instance is the instance to associate the surface with.
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* pname:pCreateInfo is a pointer to an instance of the
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sname:VkXcbSurfaceCreateInfoKHR structure containing parameters
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affecting the creation of the surface object.
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* pname:pAllocator is the allocator used for host memory allocated for the
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surface object when there is no more specific allocator available (see
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<<memory-allocation,Memory Allocation>>).
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* pname:pSurface points to a slink:VkSurfaceKHR handle in which the
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created surface object is returned.
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include::../../validity/protos/vkCreateXcbSurfaceKHR.txt[]
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--
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[open,refpage='VkXcbSurfaceCreateInfoKHR',desc='Structure specifying parameters of a newly created Xcb surface object',type='structs']
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--
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The sname:VkXcbSurfaceCreateInfoKHR structure is defined as:
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include::../../api/structs/VkXcbSurfaceCreateInfoKHR.txt[]
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* pname:sType is the type of this structure.
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* pname:pNext is `NULL` or a pointer to an extension-specific structure.
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* pname:flags is reserved for future use.
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* pname:connection is a pointer to an code:xcb_connection_t to the X
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server.
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* pname:window is the code:xcb_window_t for the X11 window to associate
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the surface with.
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.Valid Usage
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****
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* [[VUID-VkXcbSurfaceCreateInfoKHR-connection-01310]]
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pname:connection must: point to a valid X11 code:xcb_connection_t.
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* [[VUID-VkXcbSurfaceCreateInfoKHR-window-01311]]
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pname:window must: be a valid X11 code:xcb_window_t.
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****
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include::../../validity/structs/VkXcbSurfaceCreateInfoKHR.txt[]
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--
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With Xcb, pname:minImageExtent, pname:maxImageExtent, and
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pname:currentExtent must: always equal the window size.
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The pname:currentExtent of an Xcb surface must: have both pname:width and
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pname:height greater than 0, or both of them 0.
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[NOTE]
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.Note
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====
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Due to above restrictions, it is only possible to create a new swapchain on
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this platform with pname:imageExtent being equal to the current size of the
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window.
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The window size may: become [eq]#(0, 0)# on this platform (e.g. when the
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window is minimized), and so a swapchain cannot: be created until the size
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changes.
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====
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Some Vulkan functions may: send protocol over the specified xcb connection
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when using a swapchain or presentable images created from a
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slink:VkSurfaceKHR referring to an xcb window.
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Applications must: therefore ensure the xcb connection is available to
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Vulkan for the duration of any functions that manipulate such swapchains or
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their presentable images, and any functions that build or queue command
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buffers that operate on such presentable images.
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Specifically, applications using Vulkan with xcb-based swapchains must:
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* Avoid holding a server grab on an xcb connection while waiting for
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Vulkan operations to complete using a swapchain derived from a different
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xcb connection referring to the same X server instance.
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Failing to do so may: result in deadlock.
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