[Bug 93125] Rendering artifacts in SNA for small regions

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93125

--- Comment #3 from Jaroslav Škarvada <jskarvad at redhat.com> ---
I played with this for few days and it's weird. With debugging enabled the UI
is drawn apparently slower, but there are no artifacts. The artifacts starts
appearing with debugging disabled. Maybe some race is encountered with the
faster draw, I don't know. If this is user space problem, I can't understand
why it is not reproducible with different drivers/graphics cards. I will try to
prepare stripped down reproducer and let's see.

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