[Bug 99418] DRI3 Stuttering while scrolling in Chromium/Chrome with VBLANK off
bugzilla-daemon at freedesktop.org
bugzilla-daemon at freedesktop.org
Thu Feb 2 06:19:20 UTC 2017
https://bugs.freedesktop.org/show_bug.cgi?id=99418
--- Comment #35 from lei.pero at gmail.com ---
(In reply to Michel Dänzer from comment #34)
> (In reply to lei.pero from comment #33)
> > Yeah, but by setting 1 and using any other WM results in Chromium/Chrome
> > being VSYNC-ed, [...]
>
> With a compositing manager, tearing or not is up to that.
>
>
> > [...] i would call it mutter/clutter configuration bug [...]
>
> vblank_mode is Mesa configuration overriding mutter's intent, so it cannot
> reasonably be called that.
>
Well, whatever it is, it affects only mutter/mutter based WM's, for now,
workaround is to use vblank_mode value "1".
>
> > plus it doesn't explain DRI2 behavior that follows same standard :).
>
> It's probably just a happy accident that it works better according to your
> criteria with DRI2.
Or unhappy accident for DRI3 :).
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