[Webkit-unassigned] [Bug 24130] Paint very slow when horizontally resizing

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Tue Feb 24 16:27:47 PST 2009


------- Comment #5 from mitz at webkit.org  2009-02-24 16:27 PDT -------
The problem seems to happen when Image::drawTiled() chooses to call
GeneratedImage::drawPattern() instead of GeneratedImage::draw(), namely when
the destination rect is not contained in the tile rect.
GeneratedImage::drawPattern() proceeds to allocate a potentially huge image
buffer, draw into it, create an image out of it (copying the data in the
process), and then use that image as a pattern.

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