[Webkit-unassigned] [Bug 116827] New: [CSS Regions] Elements with 3D transforms do not create composited layers

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon May 27 07:48:51 PDT 2013


https://bugs.webkit.org/show_bug.cgi?id=116827

           Summary: [CSS Regions] Elements with 3D transforms do not
                    create composited layers
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: mibalan at adobe.com
                CC: WebkitBugTracker at adobe.com


Elements in the document flow (flow-into: none) create a composited layer when they have a 3D transform applied to them. When flowing such an element inside a named flow the composited layer isn't preserved/created anymore.

In the attached file, toggle between `flow-into: flow` and `flow-into: none` for the gray div with text - when flow-into is specified, a composited layer is no longer created (this can be inspected via the Debug > Drawing/Compositing flags > Show compositing borders or Debug > Show RenderLayer tree menu entries in Safari/WK nightly)

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