[cairo] perf: long dashed lines

[Vladimir Vukicevic]

Here's a followup patch that attempts to implement the bigger  
optimization -- entirely avoid creating faces for out-of-bounds  
segments.  This is still a work in progress, but figured I would toss  
it out for feedback.  Seems to work quite well, though I'm not sure if  
my quick fix of expanding the bounding box by the line width is enough  
to catch all edge issues.  (Also, I just realized that I'm not sure if  
that's the right line width -- do I need to transform it?)

     - Vlad
-------------- next part --------------
A non-text attachment was scrubbed...
Name: optimize-stroke-2.patch
Type: application/octet-stream
Size: 8117 bytes
Desc: not available
Url : http://lists.cairographics.org/archives/cairo/attachments/20080202/285c2723/attachment.obj 
-------------- next part --------------