[Webkit-unassigned] [Bug 3781] Animation via canvas could be faster

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=3781


oliver at apple.com changed:

           What    |Removed                     |Added
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                 CC|                            |oliver at apple.com
           Priority|P3                          |P1




------- Comment #4 from oliver at apple.com  2008-12-29 04:01 PDT -------
This testcase actually just points out the major problems with fillRect drawing
in canvas, some quick sharking shows two immediate problems
1) HTMLCanvasElement::willDraw takes 40% of the runtime -- note that painting
only takes 11% of the time.   We should be able to reduce this a wee bit.
2) Parsing the colors takes 20% of the runtime -- instantiating full CSSParser
every time, then tearing it back down.  We have fast pass parsers, so why
aren't we using them?


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