[Webkit-unassigned] [Bug 23526] clipToImageBuffer() for all platforms

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=23526


Martin Robinson <mrobinson at webkit.org> changed:

           What    |Removed                     |Added
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                 CC|                            |mrobinson at webkit.org




--- Comment #25 from Martin Robinson <mrobinson at webkit.org>  2011-02-20 10:42:51 PST ---
I've uploaded a completed patch for this issue. It does two things:

1. Instead of pushing two groups to emulate the image clip, it pushes one (to isolate the mask) and then calls cairo_mask_surface during restorePlatformState.

2. Cairo does not composite with the previous group when you push a group. To deal with this problem, I blit the contents of the previous group onto the new group after pushing it. This produces the correct rendering with Andrei's test case.

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