[Webkit-unassigned] [Bug 39691] [Qt] GraphicsLayer: support tiling

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=39691





--- Comment #5 from Noam Rosenthal <noam.rosenthal at nokia.com>  2010-06-03 15:54:13 PST ---
Created an attachment (id=57825)
 --> (https://bugs.webkit.org/attachment.cgi?id=57825)
Tiling performance issue

I've noticed this while using valgrind - we're iterating over each pixel to get the tile for it out of a map. This is a bottleneck for a large web-page.
In the patch I jump over the pixels based on the tile size but I'm not sure it's correct. Antti?

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