[Webkit-unassigned] [Bug 117454] add canvas mask support for Cairo

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117454





--- Comment #3 from arno. <arno at renevier.net>  2013-06-12 10:14:41 PST ---
(In reply to comment #2)
> I'm not a fan of doing the mask for every operation. At the very least, we should not slow down image masking to prepare for an API that may never exist.

Image masking (with css) would not be impacted by this change. css image masking is done with by drawing an image with destination_in, usually wrapped inside beginTransparencyLayer/endTransparencyLayer

svg masking would be impacted by this change is some cases, for example:

<g mask>
<ellipse/>
<ellipse/>
</g>

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