103 lines
2.9 KiB
Plaintext
103 lines
2.9 KiB
Plaintext
// Copyright (c) 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_get_surface_capabilities2]]
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== VK_KHR_get_surface_capabilities2
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*Name String*::
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+VK_KHR_get_surface_capabilities2+
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*Extension Type*::
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Instance extension
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*Registered Extension Number*::
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120
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*Last Modified Date*::
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2017-02-27
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*Revision*::
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1
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*IP Status*::
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No known IP claims.
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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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- This extension requires +VK_KHR_surface+.
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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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*Contacts*::
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- James Jones, NVIDIA
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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,VK_KHR_surface>>
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equivalent of the <<VK_KHR_get_physical_device_properties2,
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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 ename: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, combined with VK_KHR_get_display_properties2
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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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