1467128 - [Wayland] Get VSync from Gtk/Wayland

Status: RESOLVED FIXED

(Core :: Widget: Gtk, enhancement)

Description

[Martin Stránský [:stransky] (ni? me)]

We need to use hardware vsync on Wayland as it uses double-buffering only and produces flickering then.

Comment 1

[Anass Ahmed]

Is this related to bug 1441743 ??

Comment 2

[Martin Stránský [:stransky] (ni? me)]

(In reply to Anass Ahmed from comment #1)
> Is this related to bug 1441743 ??

Maybe, not sure.

Comment 3

[Martin Stránský [:stransky] (ni? me)]

Attachment: Bug 1467128 - [Wayland] Get VSync from Gtk/Wayland,

VSync on Wayland is a bit tricky as we can get only "last VSync" event signal with
CLOCK_MONOTONIC timestamp or none (if application is hidden/minimized).

That means we should draw a next frame at "last Vsync + frame delay" time and also
approximate next VSync event when we don't get any.

Review commit: https://reviewboard.mozilla.org/r/253910/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/253910/

Comment 4

[Lee Salzman [:lsalzman]]

Comment on attachment 8988697 [details]
Bug 1467128 - [Wayland] Get VSync from Gtk/Wayland,

https://reviewboard.mozilla.org/r/253910/#review260630

Comment 5

[Martin Stránský [:stransky] (ni? me)]

Comment on attachment 8988697 [details]
Bug 1467128 - [Wayland] Get VSync from Gtk/Wayland,

Review request updated; see interdiff: https://reviewboard.mozilla.org/r/253910/diff/1-2/

Comment 6

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/d1c14db60043
[Wayland] Get VSync from Gtk/Wayland, r=lsalzman

Comment 7

[Cristina Coroiu [:ccoroiu]]

https://hg.mozilla.org/mozilla-central/rev/d1c14db60043