[webkit-reviews] review granted: [Bug 42300] Canvas: Don't add shadow rect to dirty region when shadow alpha is 0 : [Attachment 61578] Proposed patch

[bugzilla-daemon at webkit.org]

Darin Adler <darin at apple.com> has granted Andreas Kling
<andreas.kling at nokia.com>'s request for review:
Bug 42300: Canvas: Don't add shadow rect to dirty region when shadow alpha is 0
https://bugs.webkit.org/show_bug.cgi?id=42300

Attachment 61578: Proposed patch
https://bugs.webkit.org/attachment.cgi?id=61578&action=review

------- Additional Comments from Darin Adler <darin at apple.com>
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.