[Wayland-bugs] [Bug 106736] With Vsync disabled, Weston almost halves *visible* frame update rate, compared to X desktop

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=106736

--- Comment #16 from Eero Tamminen <eero.t.tamminen at intel.com> ---
(In reply to Pekka Paalanen from comment #15)
> Oh right, like Michel Dänzer said in IRC, the repaint-window should probably
> be dynamically adjusted based on performance. That would be a nice research
> project. Do you think that could be the solution, Eero?

It definitely seems something worth trying.


(In reply to Pekka Paalanen from comment #14)
[...]
> Variable refresh rate is an aid to let keep vsync on.
>
> I only recently saw a discussion about how variable refresh rate should be
> exposed in KMS UABI. Therefore I believe there is no UABI for it yet, which
> means that nothing on DRM KMS can make use of it yet.

Oh, I had no idea one needs Windows for that. :-/

While games are not really my thing [1], I would image gamers to want 144Hz
monitor with "FreeSync" and configure the game so that he gets somewhere
between e.g. 72-144Hz update frequency with variable Vsync rate.

However, something like that should be done with fullscreen / compositor
bypass.


[1] I'm more into emulators (one of the maintainers for one), those also need
Vsync differing from 60Hz (in my case 50 or 71).  Because those frequencies are
fixed during emulator run, changing whole display refresh rate would be one
option there, but "FreeSync" would be nice there too.

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