Bug 116827

Summary: [CSS Regions] Elements with 3D transforms do not create composited layers
Product: WebKit Reporter: Mihai Balan <mibalan>
Component: CSSAssignee: Nobody <webkit-unassigned>
Status: RESOLVED WORKSFORME    
Severity: Normal CC: mihnea, WebkitBugTracker
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: Unspecified   
OS: Unspecified   
Bug Depends on:    
Bug Blocks: 57312    
Attachments:
Description Flags
Test-case
none
Test-case none

Mihai Balan
Reported 2013-05-27 07:47:22 PDT
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)
Attachments
Test-case (438 bytes, text/html)
2013-05-27 07:47 PDT, Mihai Balan 		no flags
Details
Test-case (1.06 KB, application/zip)
2013-06-02 08:49 PDT, Mihai Balan 		no flags
Details
Show Obsolete (1) View All Add attachment proposed patch, testcase, etc.
Mihai Balan
Comment 1 2013-05-27 07:47:45 PDT
Created attachment 202983 [details] Test-case
Mihai Balan
Comment 2 2013-06-02 08:49:07 PDT
Created attachment 203525 [details] Test-case
Michelangelo De Simone
Comment 3 2013-06-13 10:50:53 PDT
Still repros on today's nightly (r151543)
Mihnea Ovidenie
Comment 4 2014-02-04 06:53:03 PST
Fixed in WebKit nighly which was expected after we enabled ACC for elements displayed in regions.
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