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60cc7e367a
Scissors provide a critical hint to tiled renderers as to what tiles need to be load/stored because they could be modified by the rendering. The bounds calculation here is limited to when we have a small number of rects (large enough to cover rounded window corners, but probably not xeyes) to avoid overhead on desktop GL. No performance difference on i965 with x11perf -rect1 -repeat 1 -reps 10000 (n=50) v2: Clamp rectangle bounds addition. Signed-off-by: Eric Anholt <eric@anholt.net> Reviewed-by: Keith Packard <keithp@keithp.com>
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
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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:
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https://www.freedesktop.org/wiki/CodeOfConduct