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ca4abe0d34
* Bump API patch number and header version number to 39 for this update.
Github Issues:
* Clarified that only accesses via the specified buffer/image subresource
ranges are included in the access scopes (public issue 306).
* Add missing valid usage statements for flink:vkCreateComputePipelines
and flink:vkCreateGraphicsPipelines (public issue 427).
Internal Issues:
* Add a Note to the <<invariance,Invariance>> appendix about a difference
between OpenGL and Vulkan with regards to how primitives derived from
offsets are handled (internal issue 355).
* Add the +<<VK_KHR_get_physical_device_properties2>>+,
+<<VK_KHR_maintenance1>>+, and +<<VK_KHR_shader_draw_parameters>>+
extensions (internal issue 448).
* Add the +<<VK_EXT_shader_subgroup_vote>>+ and
+<<VK_EXT_shader_subgroup_ballot>>+ extensions (internal issue 449).
* Update the texture level-of-detail equation in the
<<textures-scale-factor,Scale Factor Operation>> section to better
approximate the ellipse major and minor axes (internal issue 547).
* Forbid non-explicitly allowed uses of interface decorations in the
introduction to the <<interfaces,Shader Interfaces>> chapter (internal
issue 607).
* Replace use of MathJax with KaTeX, for improved load-time performance as
well as avoiding the scrolling-and-scrolling behavior due to MathJax
asynchronous rendering when loading at an anchor inside the spec. This
change also requires moving to HTML5 output for the spec instead of
XHTML, and there is a visible difference in that the chapter navigation
index is now in a scrollable sidebar instead of at the top of the
document. We may or may not retain the nav sidebar based on feedback
(internal issue 613).
* Improve consistency of markup and formatting in extension appendices
(internal issue 631).
Other Issues:
* Add explicit valid usage statements to slink:VkImageCopy requiring that
the source and destination layer ranges be contained in their respective
source and destination images.
* Add valid usage language for swapchain of flink:vkAcquireNextImage. If
the swapchain has been replaced, then it should not be passed to
flink:vkAcquireNextImage.
* Add a valid usage statement to flink:vkCreateImageView, that the image
must have been created with an appropriate usage bit set.
* Noted that slink:VkDisplayPresentInfoKHR is a valid extension of
slink:VkPresentInfoKHR in the <<wsi_swapchain,WSI Swapchain>> section.
* Update valid usage for flink:vkCmdSetViewport and flink:vkCmdSetScissor
to account for the multiple viewport feature. If the feature is not
enabled, the parameters for these functions have required values that
are defined in the <<features-features-multiViewport,multiple
viewports>> section of the spec but were not reflected in the valid
usage text for these functions.
* Add the +<<VK_EXT_swapchain_colorspace>>+ extension defining common
color spaces.
81 lines
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81 lines
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[[VK_EXT_acquire_xlib_display]]
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== VK_EXT_acquire_xlib_display
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*Name String*::
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+VK_EXT_acquire_xlib_display+
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*Extension Type*::
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Instance extension
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*Registered Extension Number*::
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90
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*Last Modified Date*::
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2016-12-13
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*Revision*::
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1
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*IP Status*::
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No known IP claims.
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*Dependencies*::
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- This extension is written against version 1.0.37 of the Vulkan API.
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- Requires +VK_KHR_display+.
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- Requires +VK_EXT_direct_mode_display+.
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*Contributors*::
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- Dave Airlie, Red Hat
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- Pierre Boudier, NVIDIA
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- James Jones, NVIDIA
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- Damien Leone, NVIDIA
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- Pierre-Loup Griffais, Valve
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- Liam Middlebrook, NVIDIA
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- Daniel Vetter, Intel
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*Contacts*::
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- James Jones, NVIDIA (jajones 'at' nvidia.com)
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This extension allows an application to take exclusive control on a display
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currently associated with an X11 screen.
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When control is acquired, the display will be deassociated from the X11
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screen until control is released or the specified display connection is
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closed.
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Essentially, the X11 screen will behave as if the monitor has been unplugged
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until control is released.
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=== New Enum Constants
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None.
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=== New Enums
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None.
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=== New Structures
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None.
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=== New Functions
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* flink:vkAcquireXlibDisplayEXT
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* flink:vkGetRandROutputDisplayEXT
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=== Issues
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1) Should flink:vkAcquireXlibDisplayEXT take an RandR display ID, or a
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Vulkan display handle as input?
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*RESOLVED*: A Vulkan display handle.
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Otherwise there would be no way to specify handles to displays that had been
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``blacklisted'' or prevented from being included in the X11 display list by
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some native platform or vendor-specific mechanism.
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2) How does an application figure out which RandR display corresponds to a
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Vulkan display?
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*RESOLVED*: A new function, flink:vkGetRandROutputDisplayEXT, is introduced
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for this purpose.
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3) Should flink:vkGetRandROutputDisplayEXT be part of this extension, or a
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general Vulkan + RandR or Vulkan + Xlib extension?
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*RESOLVED*: To avoid yet another extension, include it in this extension.
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=== Version History
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* Revision 1, 2016-12-13 (James Jones)
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- Initial draft
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