[Webkit-unassigned] [Bug 33520] Mapping from local to container coord space is O(N^2)

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Mar 11 09:31:12 PST 2010


--- Comment #34 from Ojan Vafai <ojan at chromium.org>  2010-03-11 09:31:12 PST ---
(From update of attachment 50462)
> +++ b/WebCore/ChangeLog
> +        RenderLayer::updaterLayerPositions() makes a recursive walk through all RenderLayers and updates the repaint rectangles on ea
> +        These rectangles have to be calculated in the repaint container's coordinates, which typically means walking up to the root
> +        coordinates through something like RenderObject::mapLocalToContainer.  This patch keeps track of the offset to the root and
> +        uses that for outlineBoundsForRepaint().  It's slightly hacky but outlineBoundsForRepaint() is going away soon anyway.

Your first sentence got cut off.

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