[Webkit-unassigned] [Bug 18466] webkit's performance inferior to Firefox/Opera on Opera dhtml benchmark

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Sun Apr 13 15:29:12 PDT 2008


------- Comment #7 from hyatt at apple.com  2008-04-13 15:29 PDT -------
Appears to be an issues with regions on OS X.  The more rects you add to a
region (setNeedsDisplayInRect), the slower that method gets.  It's O(n^2).  We
may need to do unioning ourselves when many little objects are moving together
on-screen and then just send the unioned rect to setNeedsDisplayInRect.

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