VK_EXT_acquire_xlib_display

Other Extension Metadata

Last Modified Date

2016-12-13

IP Status

No known IP claims.

Contributors

Dave Airlie, Red Hat
Pierre Boudier, NVIDIA
James Jones, NVIDIA
Damien Leone, NVIDIA
Pierre-Loup Griffais, Valve
Liam Middlebrook, NVIDIA
Daniel Vetter, Intel

This extension allows an application to take exclusive control on a display currently associated with an X11 screen. When control is acquired, the display will be deassociated from the X11 screen until control is released or the specified display connection is closed. Essentially, the X11 screen will behave as if the monitor has been unplugged until control is released.

New Commands

New Enum Constants

VK_EXT_ACQUIRE_XLIB_DISPLAY_EXTENSION_NAME
VK_EXT_ACQUIRE_XLIB_DISPLAY_SPEC_VERSION

Issues

1) Should vkAcquireXlibDisplayEXT take an RandR display ID, or a Vulkan display handle as input?

RESOLVED: A Vulkan display handle. Otherwise there would be no way to specify handles to displays that had been prevented from being included in the X11 display list by some native platform or vendor-specific mechanism.

2) How does an application figure out which RandR display corresponds to a Vulkan display?

RESOLVED: A new function, vkGetRandROutputDisplayEXT, is introduced for this purpose.

3) Should vkGetRandROutputDisplayEXT be part of this extension, or a general Vulkan / RandR or Vulkan / Xlib extension?

RESOLVED: To avoid yet another extension, include it in this extension.

Version History

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