[Webkit-unassigned] [Bug 192322] New: CSS Painting API callbacks should be called before rendering

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=192322

            Bug ID: 192322
           Summary: CSS Painting API callbacks should be called before
                    rendering
           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: justin_michaud at apple.com
                CC: bfulgham at webkit.org, simon.fraser at apple.com,
                    zalan at apple.com

The callbacks should be called at RAF time, not during paint. Possibly consider using StyleDidChange to determine if the custom paint element needs to be repainted, instead of the code in RenderStyle::changeRequiresRepaint. This also means that the responsibleDocument()->renderView()->repaintRootContents() repaint in PaintWorkletGlobalScope::registerPaint can be replaced with repainting only affected custom paint images.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.webkit.org/pipermail/webkit-unassigned/attachments/20181203/bb3fef3a/attachment-0001.html>