[Webkit-unassigned] [Bug 240858] New: Apple Emoji render slightly differently with GPU Process DOM Rendering enabled

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Mon May 23 22:33:30 PDT 2022


https://bugs.webkit.org/show_bug.cgi?id=240858

            Bug ID: 240858
           Summary: Apple Emoji render slightly differently with GPU
                    Process DOM Rendering enabled
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: heycam at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

Created attachment 459697

  --> https://bugs.webkit.org/attachment.cgi?id=459697&action=review

screen shot with GPUP DOM rendering enabled

Attaching screen shots on iPad with GPUP DOM Rendering enabled and disabled.  Notice that the emoji rendering is slightly different.  This makes me wonder if CoreText is not selecting an emoji of an appropriate size.  Maybe it's unaware of the scale factor when it's drawing to the RemoteDisplayListRecorderProxy?

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