[Webkit-unassigned] [Bug 39123] Unneeded fillRect call in RenderBoxModelObject::paintFillLayerExtended

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=39123





--- Comment #9 from Simon Fraser (smfr) <simon.fraser at apple.com>  2010-05-20 10:44:54 PST ---
(In reply to comment #8)

> Further, some graphics systems already have early exits for the case of filling objects with a fully-transparent color.

This patch isn't avoiding doing a fillRect for a fully transparent color. It's checking to see if a later fillRect will fully obscure an earlier one, which I think is a fine optimization.

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