| // Copyright (c) 2017-2018 Khronos Group. This work is licensed under a |
| // Creative Commons Attribution 4.0 International License; see |
| // http://creativecommons.org/licenses/by/4.0/ |
| |
| include::meta/VK_KHR_get_surface_capabilities2.txt[] |
| |
| *Last Modified Date*:: |
| 2017-02-27 |
| *IP Status*:: |
| No known IP claims. |
| *Contributors*:: |
| - Ian Elliott, Google |
| - James Jones, NVIDIA |
| - Alon Or-bach, Samsung |
| |
| This extension provides new entry points to query device surface |
| capabilities in a way that can be easily extended by other extensions, |
| without introducing any further entry points. |
| This extension can be considered the `<<VK_KHR_surface>>` equivalent of the |
| `<<VK_KHR_get_physical_device_properties2>>` extension. |
| |
| === New Object Types |
| |
| None. |
| |
| === New Enum Constants |
| |
| * Extending elink:VkStructureType: |
| ** ename:VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SURFACE_INFO_2_KHR |
| ** ename:VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_KHR |
| ** ename:VK_STRUCTURE_TYPE_SURFACE_FORMAT_2_KHR |
| |
| === New Enums |
| |
| None. |
| |
| === New Structures |
| |
| * slink:VkPhysicalDeviceSurfaceInfo2KHR |
| * slink:VkSurfaceCapabilities2KHR |
| * slink:VkSurfaceFormat2KHR |
| |
| === New Functions |
| |
| * flink:vkGetPhysicalDeviceSurfaceCapabilities2KHR |
| * flink:vkGetPhysicalDeviceSurfaceFormats2KHR |
| |
| === Issues |
| |
| 1) What should this extension be named? |
| |
| *RESOLVED*: `VK_KHR_get_surface_capabilities2`. |
| Other alternatives: |
| |
| * `VK_KHR_surface2` |
| * One extension, combining a separate display-specific query extension. |
| |
| 2) Should additional WSI query functions be extended? |
| |
| *RESOLVED*: |
| |
| * flink:vkGetPhysicalDeviceSurfaceCapabilitiesKHR: Yes. |
| The need for this motivated the extension. |
| * flink:vkGetPhysicalDeviceSurfaceSupportKHR: No. |
| Currently only has boolean output. |
| Extensions should instead extend |
| flink:vkGetPhysicalDeviceSurfaceCapabilities2KHR. |
| * flink:vkGetPhysicalDeviceSurfaceFormatsKHR: Yes. |
| * flink:vkGetPhysicalDeviceSurfacePresentModesKHR: No. |
| Recent discussion concluded this introduced too much variability for |
| applications to deal with. |
| Extensions should instead extend |
| flink:vkGetPhysicalDeviceSurfaceCapabilities2KHR. |
| * flink:vkGetPhysicalDeviceXlibPresentationSupportKHR: Not in this |
| extension. |
| * flink:vkGetPhysicalDeviceXcbPresentationSupportKHR: Not in this |
| extension. |
| * flink:vkGetPhysicalDeviceWaylandPresentationSupportKHR: Not in this |
| extension. |
| * flink:vkGetPhysicalDeviceMirPresentationSupportKHR: Not in this |
| extension. |
| * flink:vkGetPhysicalDeviceWin32PresentationSupportKHR: Not in this |
| extension. |
| |
| === Version History |
| |
| * Revision 1, 2017-02-27 (James Jones) |
| - Initial draft. |
