[Webkit-unassigned] [Bug 42300] Canvas: Don't add shadow rect to dirty region when shadow alpha is 0

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42300





--- Comment #3 from Andreas Kling <andreas.kling at nokia.com>  2010-07-14 16:25:22 PST ---
(In reply to comment #2)
> (From update of attachment 61578 [details])
> It’s unfortunate we have to construct a Color just to check the alpha channel. That’s going to cost some actual instructions and CPU time. Maybe we should have more functions that operate directly on RGBA32 values.

Agreed. Coming soon in a separate patch.

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