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clutter/master-clock: Destroy source when paused

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Pausing the master clock didn't actually pause it if there was already a
scheduled frame in progress. This is problematic if one actually expects
to see no new frame scheduling to happen after pausing, for example it
caused actor 'pre-paint' to be signalled on actors, but nothing was ever
painted.

Avoid this by destroying the master clock source when pausing, and then
recreating it when resuming.

https://gitlab.gnome.org/GNOME/mutter/merge_requests/309
This commit is contained in:
Jonas Ådahl 2018-11-14 13:22:05 +01:00
parent bda9c359af
commit 626c3745e2
1 changed files with 12 additions and 2 deletions
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14
clutter/clutter/clutter-master-clock-default.c
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@ -470,6 +470,8 @@ clutter_clock_source_new (ClutterMasterClockDefault *master_clock)
ClutterClockSource *clock_source = (ClutterClockSource *) source;
g_source_set_name (source, "Clutter master clock");
g_source_set_priority (source, CLUTTER_PRIORITY_REDRAW);
g_source_set_can_recurse (source, FALSE);
clock_source->master_clock = master_clock;
return source;
@ -615,8 +617,6 @@ clutter_master_clock_default_init (ClutterMasterClockDefault *self)
self->frame_budget = G_USEC_PER_SEC / 60;
#endif
g_source_set_priority (source, CLUTTER_PRIORITY_REDRAW);
g_source_set_can_recurse (source, FALSE);
g_source_attach (source, NULL);
}
@ -675,6 +675,16 @@ clutter_master_clock_default_set_paused (ClutterMasterClock *clock,
{
ClutterMasterClockDefault *master_clock = (ClutterMasterClockDefault *) clock;
if (paused && !master_clock->paused)
{
g_clear_pointer (&master_clock->source, g_source_destroy);
}
else if (!paused && master_clock->paused)
{
master_clock->source = clutter_clock_source_new (master_clock);
g_source_attach (master_clock->source, NULL);
}
master_clock->paused = !!paused;
}