0d7f05ed99
This avoids recomputing the span data for every dash. x11perf thinks this is a pretty modest speedup: 832919.4 840471.1 ( 1.009) 100-pixel dashed ellipse 672353.1 680652.2 ( 1.012) 100-pixel double-dashed ellipse 13748.9 24287.9 ( 1.767) 100-pixel wide dashed ellipse 9236.3 21298.2 ( 2.306) 100-pixel wide double-dashed ellipse But part of the reason it's so modest there is that the arcs are relatively small (100 pixel diameter at line width 10, so ~6000 pixels) and the dashes relatively large (30 on 20 off so ~6 dashes per quadrant). With larger arcs and finer dashes this is much more impressive. A fairly trivial testcase of a single 15000x13000 arc with the default {2, 2} dash pattern drops from ~3500 milliseconds to 10 milliseconds. Reviewed-by: Keith Packard <keithp@keithp.com> Signed-off-by: Adam Jackson <ajax@redhat.com> |
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composite | ||
config | ||
damageext | ||
dbe | ||
dix | ||
doc | ||
dri3 | ||
exa | ||
fb | ||
glamor | ||
glx | ||
hw | ||
include | ||
m4 | ||
man | ||
mi | ||
miext | ||
os | ||
present | ||
pseudoramiX | ||
randr | ||
record | ||
render | ||
test | ||
Xext | ||
xfixes | ||
Xi | ||
xkb | ||
.dir-locals.el | ||
.gitignore | ||
autogen.sh | ||
configure.ac | ||
COPYING | ||
devbook.am | ||
docbook.am | ||
fix-miregion | ||
fix-miregion-private | ||
fix-patch-whitespace | ||
fix-region | ||
Makefile.am | ||
manpages.am | ||
README | ||
xorg-server.m4 | ||
xorg-server.pc.in | ||
xserver.ent.in |
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: http://en.wikipedia.org/wiki/X_server All questions regarding this software should be directed at the Xorg mailing list: http://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 http://cgit.freedesktop.org/xorg/xserver For patch submission instructions, see: http://www.x.org/wiki/Development/Documentation/SubmittingPatches For more information on the git code manager, see: http://wiki.x.org/wiki/GitPage