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clutter/frame-clock: Add API to schedule next frame immediately

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Aimed to replace the 'skip-sync-delay' mechanism currently used by
XSyncAlarmNotify to schedule an more immediate redraw.

https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1285
This commit is contained in:
Jonas Ådahl 2020-03-21 23:23:23 +01:00
parent 8f96885af8
commit 7e27fb6d56
2 changed files with 43 additions and 5 deletions
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39
clutter/clutter/clutter-frame-clock.c
View File

@ -76,6 +76,7 @@ struct _ClutterFrameClock
int64_t next_presentation_time_us;
gboolean pending_reschedule;
gboolean pending_reschedule_now;
};
G_DEFINE_TYPE (ClutterFrameClock, clutter_frame_clock,
@ -108,14 +109,21 @@ clutter_frame_clock_notify_presented (ClutterFrameClock *frame_clock,
break;
case CLUTTER_FRAME_CLOCK_STATE_DISPATCHING:
case CLUTTER_FRAME_CLOCK_STATE_PENDING_PRESENTED:
frame_clock->state = CLUTTER_FRAME_CLOCK_STATE_IDLE;
if (frame_clock->pending_reschedule)
{
frame_clock->pending_reschedule = FALSE;
clutter_frame_clock_schedule_update (frame_clock);
if (frame_clock->pending_reschedule_now)
{
frame_clock->pending_reschedule_now = FALSE;
clutter_frame_clock_schedule_update_now (frame_clock);
}
else
{
frame_clock->state = CLUTTER_FRAME_CLOCK_STATE_IDLE;
clutter_frame_clock_schedule_update (frame_clock);
}
}
break;
}
@ -185,6 +193,33 @@ calculate_next_update_time_us (ClutterFrameClock *frame_clock,
*out_next_presentation_time_us = next_presentation_time_us;
}
void
clutter_frame_clock_schedule_update_now (ClutterFrameClock *frame_clock)
{
int64_t next_update_time_us = -1;
switch (frame_clock->state)
{
case CLUTTER_FRAME_CLOCK_STATE_INIT:
case CLUTTER_FRAME_CLOCK_STATE_IDLE:
next_update_time_us = g_get_monotonic_time ();
break;
case CLUTTER_FRAME_CLOCK_STATE_SCHEDULED:
return;
case CLUTTER_FRAME_CLOCK_STATE_DISPATCHING:
case CLUTTER_FRAME_CLOCK_STATE_PENDING_PRESENTED:
frame_clock->pending_reschedule = TRUE;
frame_clock->pending_reschedule_now = TRUE;
return;
}
g_warn_if_fail (next_update_time_us != -1);
g_source_set_ready_time (frame_clock->source, next_update_time_us);
frame_clock->state = CLUTTER_FRAME_CLOCK_STATE_SCHEDULED;
frame_clock->is_next_presentation_time_valid = FALSE;
}
void
clutter_frame_clock_schedule_update (ClutterFrameClock *frame_clock)
{

3
clutter/clutter/clutter-frame-clock.h
View File

@ -55,4 +55,7 @@ void clutter_frame_clock_notify_presented (ClutterFrameClock *frame_clock,
CLUTTER_EXPORT
void clutter_frame_clock_schedule_update (ClutterFrameClock *frame_clock);
CLUTTER_EXPORT
void clutter_frame_clock_schedule_update_now (ClutterFrameClock *frame_clock);
#endif /* CLUTTER_FRAME_CLOCK_H */