83 lines
2.1 KiB
Plaintext
83 lines
2.1 KiB
Plaintext
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// 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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include::meta/VK_KHR_swapchain_mutable_format.txt[]
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*Last Modified Date*::
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2018-03-28
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Jason Ekstrand, Intel
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- Jan-Harald Fredriksen, ARM
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- Jesse Hall, Google
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- Daniel Rakos, AMD
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- Ray Smith, ARM
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=== Short Description
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Allows processing of swapchain images as different formats to that used by
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the window system, which is particularly useful for switching between sRGB
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and linear RGB formats.
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=== Description
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This extension adds a new swapchain creation flag that enables creating
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image views from presentable images with a different format than the one
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used to create the swapchain.
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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:VkSwapchainCreateFlagBitsKHR:
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** ename:VK_SWAPCHAIN_CREATE_MUTABLE_FORMAT_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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None.
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=== Issues
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1) Are there any new capabilities needed?
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*RESOLVED*: No.
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It is expected that all implementations exposing this extension support
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swapchain image format mutability.
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2) Do we need a separate etext:VK_SWAPCHAIN_CREATE_EXTENDED_USAGE_BIT_KHR?
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*RESOLVED*: No.
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This extension requires `VK_KHR_maintenance2` and presentable images of
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swapchains created with ename:VK_SWAPCHAIN_CREATE_MUTABLE_FORMAT_BIT_KHR are
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created internally in a way equivalent to specifying both
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ename:VK_IMAGE_CREATE_MUTABLE_FORMAT_BIT and
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ename:VK_IMAGE_CREATE_EXTENDED_USAGE_BIT_KHR.
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3) Do we need a separate structure to allow specifying an image format list
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for swapchains?
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*RESOLVED*: No.
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We simply use the same slink:VkImageFormatListCreateInfoKHR structure
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introduced by `VK_KHR_image_format_list`.
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The structure is required to be included in the pname:pNext chain of
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slink:VkSwapchainCreateInfoKHR for swapchains created with
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ename:VK_SWAPCHAIN_CREATE_MUTABLE_FORMAT_BIT_KHR.
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=== Version History
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* Revision 1, 2018-03-28 (Daniel Rakos)
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- Internal revisions.
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