[Nouveau] [Bug 35930] flickering in many OpenGL applications with composition manager

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=35930

--- Comment #13 from maximlevitsky at gmail.com 2011-05-20 20:00:42 PDT ---
Yes, it indeed pageflip support.
Putting 'return FALSE' in can_exchange fixes the problem, last time I must have
forgot to 'make install' or something.

However, 'Option "PageFlip" "false"' doesn't help, because even if set, the
condition in can_exchange lets flipping in some cases
(if nouveau_exa_pixmap_is_onscreen() == FALSE).
Not sure why that check is there.

Also note that if game doesn't run full-screen, I can still see rare flickering
with pageflip disabled (with that return FALSE).
Probably as was suggested before, it just exposes the problem that was there
before.

Also alien-arena works just fine.
Although I likely won't play it, despite nice graphics, and theme, I hate the
controls (you can't move left-right) and health there actually decreases and
not increases in idle like in nexuiz.

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