[Webkit-unassigned] [Bug 86512] [chromium] Overlap testing gets disabled in Chromium even when animating within overflow:hidden areas

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=86512


Adrienne Walker <enne at google.com> changed:

           What    |Removed                     |Added
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         AssignedTo|webkit-unassigned at lists.web |enne at google.com
                   |kit.org                     |
                 CC|                            |simon.fraser at apple.com




--- Comment #1 from Adrienne Walker <enne at google.com>  2012-05-16 17:59:40 PST ---
I see what the problem is in Chromium.  If a layer both animates and clips but has no compositing descendants, then the check in RenderLayerCompositor.cpp:838 fails and the overlap testing isn't put back on.  That looks like an oversight to me.

My guess is that something other layer gets composited for Safari in that subtree and so that check succeeds, but I haven't verified this.

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