[Webkit-unassigned] [Bug 33150] Do not render the full frame when there is some elements with fixed positioning

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=33150





--- Comment #17 from Antti Koivisto <koivisto at iki.fi>  2010-01-07 04:29:48 PST ---
(In reply to comment #5)
> (4) Why not make fixed background images work too?  They are just as common (if
> not moreso) than fixed positioning.

Fixed background seems to be often used on the root element (covering the
entire view), making this optimization ineffective. Optimizing the case would
require moving copy-scroll implementation to WebKit too.

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