include::meta/VK_EXT_display_surface_counter.txt[]

*Last Modified Date*::
    2016-12-13
*IP Status*::
    No known IP claims.
*Contributors*::
  - Pierre Boudier, NVIDIA
  - James Jones, NVIDIA
  - Damien Leone, NVIDIA
  - Pierre-Loup Griffais, Valve
  - Daniel Vetter, Intel

This is extension defines a vertical blanking period counter associated with
display surfaces.
It provides a mechanism to query support for such a counter from a
slink:VkSurfaceKHR object.

=== New Enum Constants

  * Extending elink:VkStructureType:
  ** ename:VK_STRUCTURE_TYPE_SURFACE_CAPABILITIES_2_EXT

=== New Enums

  * tlink:VkSurfaceCounterFlagsEXT
  * elink:VkSurfaceCounterFlagBitsEXT

=== New Structures

  * slink:VkSurfaceCapabilities2EXT

=== New Functions

  * flink:vkGetPhysicalDeviceSurfaceCapabilities2EXT

=== Issues

None.

=== Version History

 * Revision 1, 2016-12-13 (James Jones)
   - Initial draft