63 lines
1.8 KiB
Plaintext
63 lines
1.8 KiB
Plaintext
// 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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