[Webkit-unassigned] [Bug 30055] Bad DOM performance in large SVG files

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=30055





--- Comment #16 from Patrick R. Gansterer <paroga at paroga.com>  2009-11-10 01:01:12 PDT ---
(In reply to comment #15)
> WebCore uses the platform's graphics library, if that graphics library has bad
> perf in some cases it can easily cause all sorts of badness.  I'm unsure
> whether the solution should be to get Qt to fix this issue (presumably it's a
> problem in their graphics library) or fix it in WebCore itself (which may
> negatively impact performance of other platforms)
> 
> Maybe this logic should be in GrpahicsContextQt?
Do you think rendering anything ist better than checking if it is necessary? I
think WebCore should render as least as possible. In GrpahicsContextQt there
won't be any information to check if painting is required. Rely on a "perfect
performing" graphics library isn't the right way in opinion. There might be
some other ports with slow graphics librarys too.

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