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https://bugs.freedesktop.org/show_bug.cgi?id=4451
Summary: pageflip doesn't always work correctly
Product: Mesa
Version: CVS
Platform: PC
OS/Version: Linux
Status: NEW
Severity: normal
Priority: P2
Component: Drivers/DRI/r200
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: [EMAIL PROTECTED]
Pageflip has some issues since some time (note I'm not sure it's a Mesa bug,
could be xorg or DRM too).
If a 3d app is running and the user switches to another terminal, when switching
back the 3d app will flicker (some additional debug info indicates it is still
using page flip and switching the buffers, so nothing unordinary). This always
happens, and switching back again to the VT won't cure it.
There's a second issue, which may not be related, when a 3d app is started and
then another one, there's a 50% chance pfCurrentPage will be 1. In that case, if
a third 3d app is started and one of the 3 closed, pfCurrentPage will go back to
0 for some reason and the two remaining apps will flicker (this can be corrected
by for instance moving the windows of the 3d apps around).
(with Mesa from xorg cvs (without the latest renderbuffer changes) there are
even more issues it seems (e.g. starting glxgears and quake3 will result in
heavy flicker) but these two issues above remain.)
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