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6b26a7bda9
ProcRRSetScreenSize() does bounds checking to ensure that none of the CRTCs have a viewport that extends beyond the new screen size. In doing so, it accounts for if the CRTC is rotated 90 or 270 degrees, swapping width and height. However, it does so by testing if crtc->rotation is equal to RR_Rotate_90 or RR_Rotate_270. crtc->rotation is a bit mask, and it includes reflection as well as rotation. If a CRTC is reflected as well as rotated, it will incorrectly fail this test, resulting in incorrect dimensions being used to verify the validity of the new screen size. In some cases, this can cause valid uses of ProcRRSetScreenSize() to fail with BadMatch. This patch fixes the issue by testing that the bits RR_Rotate_90 or RR_Rotate_270 are set, rather than testing for equality. Signed-off-by: Alex Goins <agoins@nvidia.com> Reviewed-by: Michel Dänzer <michel.daenzer@amd.com> |
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X Server
The X server accepts requests from client applications to create windows,
which are (normally rectangular) "virtual screens" that the client program
can draw into.
Windows are then composed on the actual screen by the X server
(or by a separate composite manager) as directed by the window manager,
which usually communicates with the user via graphical controls such as buttons
and draggable titlebars and borders.
For a comprehensive overview of X Server and X Window System, consult the
following article:
https://en.wikipedia.org/wiki/X_server
All questions regarding this software should be directed at the
Xorg mailing list:
https://lists.freedesktop.org/mailman/listinfo/xorg
Please submit bug reports to the Xorg bugzilla:
https://bugs.freedesktop.org/enter_bug.cgi?product=xorg
The master development code repository can be found at:
git://anongit.freedesktop.org/git/xorg/xserver
https://cgit.freedesktop.org/xorg/xserver
For patch submission instructions, see:
https://www.x.org/wiki/Development/Documentation/SubmittingPatches
For more information on the git code manager, see:
https://wiki.x.org/wiki/GitPage
As with other projects hosted on freedesktop.org, X.Org follows its
Code of Conduct, based on the Contributor Covenant. Please conduct
yourself in a respectful and civilized manner when using the above
mailing lists, bug trackers, etc:
https://www.freedesktop.org/wiki/CodeOfConduct