Module wp_presentation

Available on crate feature server only.

timed presentation related wl_surface requests

The main feature of this interface is accurate presentation timing feedback to ensure smooth video playback while maintaining audio/video synchronization. Some features use the concept of a presentation clock, which is defined in the presentation.clock_id event.

A content update for a wl_surface is submitted by a wl_surface.commit request. Request ‘feedback’ associates with the wl_surface.commit and provides feedback on the content update, particularly the final realized presentation time.

When the final realized presentation time is available, e.g. after a framebuffer flip completes, the requested presentation_feedback.presented events are sent. The final presentation time can differ from the compositor’s predicted display update time and the update’s target time, especially when the compositor misses its target vertical blanking period.

Structs

• WpPresentation
  timed presentation related wl_surface requests

Enums

• Error
  fatal presentation errors
• Event
• Request

Constants

• EVT_CLOCK_ID_OPCODE
  The wire opcode for this event
• EVT_CLOCK_ID_SINCE
  The minimal object version supporting this event
• REQ_DESTROY_OPCODE
  The wire opcode for this request
• REQ_DESTROY_SINCE
  The minimal object version supporting this request
• REQ_FEEDBACK_OPCODE
  The wire opcode for this request
• REQ_FEEDBACK_SINCE
  The minimal object version supporting this request