RESOLVED CONFIGURATION CHANGED44751
3D clipping on reverse-ordered z-indices 
https://bugs.webkit.org/show_bug.cgi?id=44751
Summary 3D clipping on reverse-ordered z-indices
Aaron Wheeler
Reported 2010-08-27 00:22:51 PDT
Created attachment 65684 [details] screenshot of bug Clipping of 3d CSS rotations of an element occurs when a previous sibling in the DOM has a lower z-index than the element. For an example, see here: http://gist.github.com/552970
Attachments
screenshot of bug (19.39 KB, image/png)
2010-08-27 00:22 PDT, Aaron Wheeler 		no flags
Details
Test Case (1.02 KB, text/html)
2022-07-12 13:32 PDT, Brent Fulgham 		no flags
Details
rendering in safari, firefox, chrome (826.66 KB, image/png)
2025-04-17 02:36 PDT, Karl Dubost 		no flags
Details
View All Add attachment proposed patch, testcase, etc.
Brent Fulgham
Comment 1 2022-07-12 13:32:35 PDT
Created attachment 460822 [details] Test Case
Brent Fulgham
Comment 2 2022-07-12 13:32:56 PDT
This works properly in Firefox and Chrome, but fails in Safari.
Radar WebKit Bug Importer
Comment 3 2022-07-12 13:33:06 PDT
<rdar://problem/96907282>
Matt Woodrow
Comment 4 2022-09-01 14:41:55 PDT
This happens because WebKit considers the two elements to be sharing a 3d rendering context, and thus computes intersections in 3d space. The other two implementations consider only the element with preserve-3d to be creating a 3d rendering context, and so no intersections happen.
Ahmad Saleem
Comment 5 2025-04-17 01:25:41 PDT
All browsers are rendering this same (Safari Technology Preview 217, Chrome Canary 137 and Firefox Nightly 139). Seems to be fixed in Safari 18.4 as well. It seems to be fixed now. @Karl - want to double check?
Karl Dubost
Comment 6 2025-04-17 02:36:35 PDT
Created attachment 474941 [details] rendering in safari, firefox, chrome Chrome and Safari renders the same Firefox is different. But this differences are unrelated to this bug (and probably partially due to -webkit- prefixes. ) So this is solved
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