[Webkit-unassigned] [Bug 13487] Implement O(1) absoluteClippedOverflowRect and absoluteOutlineBox during layout for a possible speed gain

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Wed Apr 25 11:23:27 PDT 2007


------- Comment #1 from mitz at webkit.org  2007-04-25 11:23 PDT -------
Created an attachment (id=14178)
 --> (http://bugs.webkit.org/attachment.cgi?id=14178&action=view)
Cursory patch

Implements the suggested optimization with some caveats: (1) only the root
layer is optimized (2) subtree layout is disabled (3) SVG is not patched (4)
some other RenderObject subclasses are not patched yet (5) it is not thoroughly
tested (it passes existing repaint tests) (6) some code duplication.

Before I address those I'd like to know if it's worth it. Perhaps someone with
access to the PLT and/or interesting test cases would like to help.

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