[Webkit-unassigned] [Bug 258947] New: Use composited masking for clip-path which uses an SVG path reference

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=258947

            Bug ID: 258947
           Summary: Use composited masking for clip-path which uses an SVG
                    path reference
           Product: WebKit
           Version: Safari 16
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Compositing
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: simon.fraser at apple.com

For clip-path which references SVG (e.g. `clip-path: url(#foo);`) we currently paint the mask into a masking compositing layer, which is inefficient when we repaint that mask on every frame, as we do on stackoverflow.com.

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