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gdk/frameclock: add mark when we discover frames may drop

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If we discover that some number of frames have passed that perhaps should
not have, leave a mark for the profiler.
This commit is contained in:
Christian Hergert 2024-03-08 14:41:20 -08:00
parent 09736dde93
commit 84a304e66e
1 changed files with 7 additions and 0 deletions
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7
gdk/gdkframeclockidle.c
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@ -192,6 +192,13 @@ compute_smooth_frame_time (GdkFrameClock *clock,
* and new_frame_time >= old_frame_time. */
frames_passed = (new_frame_time - smoothed_frame_time_base + frame_interval / 2) / frame_interval;
if (frames_passed > 1)
gdk_profiler_add_markf ((smoothed_frame_time_base - (frame_interval * (frames_passed-1))) * 1000L,
frame_interval * (frames_passed-1) * 1000L,
"Dropped Frames",
"%u frames may have been dropped",
frames_passed-1);
/* We use an approximately whole number of frames in the future from
* last smoothed frame time. This way we avoid minor jitter in the
* frame times making the animation speed uneven, but still animate