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5abf83f95d
* Update release number to 107.
Public Issues:
* Fix revision date for the `<<VK_AMD_gpu_shader_half_float>>` appendix
(public issue 617).
* Make <<synchronization-pipeline-barriers-subpass-self-dependencies,
subpass self-dependencies>> less restrictive (public issue 777).
* Fix the `<<VK_EXT_full_screen_exclusive>>` dependency on
`<<VK_KHR_win32_surface>>` in `vk.xml` (public pull request 849).
* Remove single-page (`apispec.html`) refpage sub-targets from the
Makefile `allman` target and the build instructions. The target is still
present in the Makefile, but we have not been actively maintaining the
single-page document and do not promise it will work. The full
Specification and the individual API reference pages are what we support
and publish at present (public issue 949).
Internal Issues:
* De-duplicate common valid usage statements shared by multiple commands
or structures by using asciidoctor includes and dynamically assigning
part of the valid usage ID based on which command or structure they're
being applied to (internal issue 779).
* Add reference pages for constructs not part of the formal API, such as
platform calling convention macros, and script changes supporting them
This required suppressing some check_spec_links warning classes in order
to pass CI, until a more sophisticated fix can be done (internal issue
888).
* Change math notation for the elink:VkPrimitiveTopology descriptions to
use short forms `v` and `p` instead of `vertex` and `primitive`,
increasing legibility (internal issue 1611).
* Rewrite generated file includes relative to a globally specified path,
fixing some issues with refpage generation (internal issue 1630).
* Update contributor list for `<<VK_EXT_calibrated_timestamps>>`.
* Fix use of pathlin in `scripts/generator.py` so the script will work on
Windows under Python 3.5 (internal merge request 3107).
* Add missing conditionals around the
<<descriptorsets-accelerationstructure, Acceleration Structure>>
section (internal merge request 3108).
* More script synchronization with OpenXR spec repository (internal merge
request 3109).
* Mark the `<<VK_AMD_gpu_shader_half_float>>` and
`<<VK_AMD_gpu_shader_int16>>` extensions as deprecated in `vk.xml` and
the corresponding extension appendices (internal merge request 3112).
New Extensions:
* `<<VK_EXT_headless_surface>>`
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// Copyright (c) 2017-2019 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_EXT_headless_surface.txt[]
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*Last Modified Date*::
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2019-03-21
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Ray Smith, Arm
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The +VK_EXT_headless_surface+ extension is an instance extension.
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It provides a mechanism to create +VkSurfaceKHR+ objects independently of
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any window system or display device.
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The presentation operation for a swapchain created from a headless surface
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is by default a no-op, resulting in no externally-visible result.
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Because there is no real presentation target, future extensions can layer on
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top of the headless surface to introduce arbitrary or customisable sets of
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restrictions or features.
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These could include features like saving to a file or restrictions to
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emulate a particular presentation target.
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This functionality is expected to be useful for application and driver
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development because it allows any platform to expose an arbitrary or
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customisable set of restrictions and features of a presentation engine.
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This makes it a useful portable test target for applications targeting a
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wide range of presentation engines where the actual target presentation
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engines might be scarce, unavailable or otherwise undesirable or
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inconvenient to use for general Vulkan application development.
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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_HEADLESS_SURFACE_CREATE_INFO_EXT
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=== New Enums
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None
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=== New Structures
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* slink:VkHeadlessSurfaceCreateInfoEXT
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=== New Functions
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* flink:vkCreateHeadlessSurfaceEXT
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=== Issues
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None
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=== Version History
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* Revision 1
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- Initial draft
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