109 lines
3.3 KiB
Plaintext
109 lines
3.3 KiB
Plaintext
// Copyright (c) 2016-2017 The Khronos Group Inc.
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// Copyright notice at https://www.khronos.org/registry/speccopyright.html
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[[VK_KHR_maintenance1]]
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== VK_KHR_maintenance1
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*Name String*::
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+VK_KHR_maintenance1+
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*Extension Type*::
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Device extension
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*Registered Extension Number*::
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70
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*Status*::
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Draft
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*Last Modified Date*::
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2016-10-26
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*Revision*::
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1
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*Dependencies*::
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- This extension is written against version 1.0 of the Vulkan API.
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*Contributors*::
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- Dan Ginsburg, Valve
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- Daniel Koch, NVIDIA
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- Daniel Rakos, AMD
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- Jan-Harald Fredriksen, ARM
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- Jason Ekstrand, Intel
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- Jeff Bolz, NVIDIA
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- Jesse Hall, Google
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- John Kessenich, Google
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- Michael Worcester, Imagination Technologies
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- Neil Henning, Codeplay Software Ltd.
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- Piers Daniell, NVIDIA
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- Slawomir Grajewski, Intel
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- Tobias Hector, Imagination Technologies
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- Tom Olson, ARM
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*Contacts*::
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- Piers Daniell (pdaniell 'at' nvidia.com)
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*Overview*::
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+VK_KHR_maintenance1+ adds a collection of minor features that were
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intentionally left out or overlooked from the original Vulkan 1.0 release.
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The new features are as follows:
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* Allow 2D and 2D array image views to be created from 3D images, which
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can then be used as color framebuffer attachments.
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This allows applications to render to slices of a 3D image.
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* Support flink:vkCmdCopyImage between 2D array layers and 3D slices.
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This extension allows copying from layers of a 2D array image to slices
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of a 3D image and vice versa.
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* Allow negative height to be specified in the
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slink::VkViewport::pname:height field to perform y-inversion of the
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clip-space to framebuffer-space transform.
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This allows apps to avoid having to use gl_Position.y = -gl_Position.y
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in shaders also targeting other APIs.
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* Allow implementations to express support for doing just transfers and
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clears of image formats that they otherwise support no other format
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features for.
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This is done by adding new format feature flags
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ename:VK_FORMAT_FEATURE_TRANSFER_SRC_BIT_KHR and
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ename:VK_FORMAT_FEATURE_TRANSFER_DST_BIT_KHR.
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* Support flink:vkCmdFillBuffer on transfer-only queues.
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Previously flink:vkCmdFillBuffer was defined to only work on command
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buffers allocated from command pools which support graphics or compute
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queues.
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It is now allowed on queues that just support transfer operations.
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* Fix the inconsistency of how error conditions are returned between the
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flink:vkCreateGraphicsPipelines and flink:vkCreateComputePipelines
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functions and the flink:vkAllocateDescriptorSets and
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flink:vkAllocateCommandBuffers functions.
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* Add new ename:VK_ERROR_OUT_OF_POOL_MEMORY_KHR error so implementations
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can give a more precise reason for flink:vkAllocateDescriptorSets
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failures.
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* Add a new command flink:vkTrimCommandPoolKHR which gives the
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implementation an opportunity to release any unused command pool memory
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back to the system.
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=== New Object Types
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None.
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=== New Enum Constants
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* ename:VK_ERROR_OUT_OF_POOL_MEMORY_KHR
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* ename:VK_FORMAT_FEATURE_TRANSFER_SRC_BIT_KHR
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* ename:VK_FORMAT_FEATURE_TRANSFER_DST_BIT_KHR
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* ename:VK_IMAGE_CREATE_2D_ARRAY_COMPATIBLE_BIT_KHR
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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:vkTrimCommandPoolKHR
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=== Issues
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None.
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=== Version History
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* Revision 1, 2016-10-26 (Piers Daniell)
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- Internal revisions
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