[Mesa-dev] [Bug 98833] [REGRESSION, bisected] Wayland revert commit breaks fullscreen frame updates

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98833

--- Comment #2 from Pekka Paalanen <ppaalanen at gmail.com> ---
(In reply to Eero Tamminen from comment #0)
> Test suite has options for using single, double or triple buffering and
> toggling Vsync, but these didn't have any effect.

Just curious, how do you actually choose between single, double or triple
buffering? I thought EGL didn't give any explicit control on buffering to the
app, and setting EGL_RENDER_BUFFER to EGL_SINGLE_BUFFER makes no sense on
Wayland. How do you control Vsync? We don't have any API on Wayland to turn
vsync off, as in, enable visible tearing.

I could understand better if you explained what you use in EGL API terms
instead, since AFAIK there is no way to explicitly choose a "buffering scheme",
EGL made sure to abstract that away from the app.

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