RESOLVED WORKSFORME48386
Setting "overflow:hidden" overwrites preserve-3d transform style 
https://bugs.webkit.org/show_bug.cgi?id=48386
Summary Setting "overflow:hidden" overwrites preserve-3d transform style
Vangelis Kokkevis
Reported 2010-10-26 15:46:41 PDT
Created attachment 71953 [details] Example demonstrating the bug It appears that when a composited layer clips its descendants, the descendant layers get flattened to the parent surface even if the preserve-3d property is set. I'm attaching an example which is a trivially modified version of the transform-style demo from the 3d CSS blog. All that's added is an "overflow:hidden" property on the #parent style. I suspect this is a side-effect of how CA implements clipping in transformed layers...
Attachments
Example demonstrating the bug (2.51 KB, text/html)
2010-10-26 15:46 PDT, Vangelis Kokkevis 		no flags
Details
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Simon Fraser (smfr)
Comment 1 2010-10-26 15:56:46 PDT
This is by design. You have to flatten in order to clip, so overflow: style overrides preserve-3d. This is mentioned in the spec: <http://www.w3.org/TR/css3-3d-transforms/#transform-style-property>
Vangelis Kokkevis
Comment 2 2010-10-26 17:39:05 PDT
(In reply to comment #1) > This is by design. You have to flatten in order to clip, so overflow: style overrides preserve-3d. This is mentioned in the spec: <http://www.w3.org/TR/css3-3d-transforms/#transform-style-property> Ah, makes sense. Thanks for the pointer!
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