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clutter/frame-clock: Remember the refresh interval

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Instead of recalculating it every time we need it. The performance
gain is not important; this is more because it will be needed in
multiple functions soon.

Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1826>
This commit is contained in:
Daniel van Vugt 2020-07-15 17:03:27 +08:00
parent a5d1d48bf1
commit ba1490ec9c
1 changed files with 16 additions and 5 deletions
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21
clutter/clutter/clutter-frame-clock.c
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@ -77,6 +77,7 @@ struct _ClutterFrameClock
GObject parent; GObject parent;
float refresh_rate; float refresh_rate;
int64_t refresh_interval_us;
ClutterFrameListener listener; ClutterFrameListener listener;
GSource *source; GSource *source;
@ -131,6 +132,15 @@ clutter_frame_clock_get_refresh_rate (ClutterFrameClock *frame_clock)
return frame_clock->refresh_rate; return frame_clock->refresh_rate;
} }
static void
clutter_frame_clock_set_refresh_rate (ClutterFrameClock *frame_clock,
float refresh_rate)
{
frame_clock->refresh_rate = refresh_rate;
frame_clock->refresh_interval_us =
(int64_t) (0.5 + G_USEC_PER_SEC / refresh_rate);
}
void void
clutter_frame_clock_add_timeline (ClutterFrameClock *frame_clock, clutter_frame_clock_add_timeline (ClutterFrameClock *frame_clock,
ClutterTimeline *timeline) ClutterTimeline *timeline)
@ -255,7 +265,10 @@ clutter_frame_clock_notify_presented (ClutterFrameClock *frame_clock,
} }
if (frame_info->refresh_rate > 1) if (frame_info->refresh_rate > 1)
frame_clock->refresh_rate = frame_info->refresh_rate; {
clutter_frame_clock_set_refresh_rate (frame_clock,
frame_info->refresh_rate);
}
switch (frame_clock->state) switch (frame_clock->state)
{ {
@ -349,7 +362,6 @@ calculate_next_update_time_us (ClutterFrameClock *frame_clock,
{ {
int64_t last_presentation_time_us; int64_t last_presentation_time_us;
int64_t now_us; int64_t now_us;
float refresh_rate;
int64_t refresh_interval_us; int64_t refresh_interval_us;
int64_t min_render_time_allowed_us; int64_t min_render_time_allowed_us;
int64_t max_render_time_allowed_us; int64_t max_render_time_allowed_us;
@ -360,8 +372,7 @@ calculate_next_update_time_us (ClutterFrameClock *frame_clock,
now_us = g_get_monotonic_time (); now_us = g_get_monotonic_time ();
refresh_rate = frame_clock->refresh_rate; refresh_interval_us = frame_clock->refresh_interval_us;
refresh_interval_us = (int64_t) (0.5 + G_USEC_PER_SEC / refresh_rate);
if (frame_clock->last_presentation_time_us == 0) if (frame_clock->last_presentation_time_us == 0)
{ {
@ -767,7 +778,7 @@ clutter_frame_clock_new (float refresh_rate,
init_frame_clock_source (frame_clock); init_frame_clock_source (frame_clock);
frame_clock->refresh_rate = refresh_rate; clutter_frame_clock_set_refresh_rate (frame_clock, refresh_rate);
frame_clock->vblank_duration_us = vblank_duration_us; frame_clock->vblank_duration_us = vblank_duration_us;
return frame_clock; return frame_clock;