Daniel van Vugt be0aa2976e clutter/frame-clock: Avoid rapidly toggling dynamic max render time
This could happen when moving the cursor over GUIs that only redraw
in response to cursor movement. Mutter would experience alternating
cursor-only updates and page flips, and so the `max_render_time_allowed_us`
would jump between pessimised and optimised resulting in inconsistent
frame pacing.

Aside from fixing the smoothness problem this should also provide
lower latency cursor movement.

Fixes: https://launchpad.net/bugs/2023766
Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/3074>
2023-06-20 09:47:23 +00:00
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