[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 #19 from maximlevitsky at gmail.com 2011-05-22 04:35:21 PDT ---
So, now I get it. The problem is that nouveau DDX would just swap between
off-screen windows without any hardware assistance, but these of-screen windows
could be used by compiz (and even bound to textures using
GLX_EXT_texture_from_pixmap) and thus is just yanks them under compiz nose.

May I suggest then to remove for now the
'!nouveau_exa_pixmap_is_onscreen(dst_pix)' from can_excange ?
This fixes the issue for me and keeps full-screen page flipping on

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