Commit a4fd9e65 authored by Pekka Paalanen's avatar Pekka Paalanen Committed by Kristian Høgsberg
Browse files

protocol: wl_surface.frame needs wl_surface.commit

Clarify, when frame request takes effect.
Explain when to send/receive the callback.
Signed-off-by: Pekka Paalanen's avatarPekka Paalanen <>
parent b61c0f47
......@@ -705,10 +705,20 @@
<request name="frame">
<description summary="request repaint feedback">
Request notification when the next frame is displayed. Useful
Request notification when the next frame is displayed. Useful
for throttling redrawing operations, and driving animations.
The frame request will take effect on the next wl_surface.commit.
The notification will only be posted for one frame unless
requested again.
A server should avoid signalling the frame callbacks if the
surface is not visible in any way, e.g. the surface is off-screen,
or completely obscured by other opaque surfaces.
A client can request a frame callback even without an attach,
damage, or any other state changes. wl_surface.commit triggers a
repaint, so the callback event will arrive after the next output
refresh where the surface is visible.
<arg name="callback" type="new_id" interface="wl_callback"/>
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