89 lines
2.6 KiB
Plaintext
89 lines
2.6 KiB
Plaintext
// Copyright (c) 2017-2018 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_get_surface_capabilities2.txt[]
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*Last Modified Date*::
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2017-02-27
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*IP Status*::
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No known IP claims.
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*Contributors*::
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- Ian Elliott, Google
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- James Jones, NVIDIA
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- Alon Or-bach, Samsung
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This extension provides new entry points to query device surface
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capabilities in a way that can be easily extended by other extensions,
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without introducing any further entry points.
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This extension can be considered the `<<VK_KHR_surface>>` equivalent of the
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`<<VK_KHR_get_physical_device_properties2>>` extension.
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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_PHYSICAL_DEVICE_SURFACE_INFO_2_KHR
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** ename:VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR
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** ename:VK_STRUCTURE_TYPE_SURFACE_FORMAT_2_KHR
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=== New Enums
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None.
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=== New Structures
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* slink:VkPhysicalDeviceSurfaceInfo2KHR
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* slink:VkSurfaceCapabilities2KHR
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* slink:VkSurfaceFormat2KHR
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=== New Functions
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* flink:vkGetPhysicalDeviceSurfaceCapabilities2KHR
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* flink:vkGetPhysicalDeviceSurfaceFormats2KHR
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=== Issues
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1) What should this extension be named?
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*RESOLVED*: `VK_KHR_get_surface_capabilities2`.
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Other alternatives:
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* `VK_KHR_surface2`
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* One extension, combining a separate display-specific query extension.
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2) Should additional WSI query functions be extended?
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*RESOLVED*:
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* flink:vkGetPhysicalDeviceSurfaceCapabilitiesKHR: Yes.
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The need for this motivated the extension.
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* flink:vkGetPhysicalDeviceSurfaceSupportKHR: No.
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Currently only has boolean output.
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Extensions should instead extend
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flink:vkGetPhysicalDeviceSurfaceCapabilities2KHR.
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* flink:vkGetPhysicalDeviceSurfaceFormatsKHR: Yes.
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* flink:vkGetPhysicalDeviceSurfacePresentModesKHR: No.
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Recent discussion concluded this introduced too much variability for
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applications to deal with.
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Extensions should instead extend
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flink:vkGetPhysicalDeviceSurfaceCapabilities2KHR.
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* flink:vkGetPhysicalDeviceXlibPresentationSupportKHR: Not in this
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extension.
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* flink:vkGetPhysicalDeviceXcbPresentationSupportKHR: Not in this
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extension.
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* flink:vkGetPhysicalDeviceWaylandPresentationSupportKHR: Not in this
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extension.
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* flink:vkGetPhysicalDeviceMirPresentationSupportKHR: Not in this
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extension.
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* flink:vkGetPhysicalDeviceWin32PresentationSupportKHR: Not in this
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extension.
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=== Version History
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* Revision 1, 2017-02-27 (James Jones)
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- Initial draft.
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