[Webkit-unassigned] [Bug 70634] Mark GraphicsLayers as opaque when possible

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=70634





--- Comment #78 from Kenneth Russell <kbr at google.com>  2011-11-28 13:43:32 PST ---
(In reply to comment #77)
> Why can't you just assume that all canvases are not opaque?

That's a good assumption. Analyzing the contents of a Canvas rendered via any means is likely to impose a massive slowdown.

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