[Webkit-unassigned] [Bug 182925] New: Async frame scrolling: root shadow not displayed when a background is present

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=182925

            Bug ID: 182925
           Summary: Async frame scrolling: root shadow not displayed when
                    a background is present
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Frames
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: fred.wang at free.fr
                CC: simon.fraser at apple.com
        Depends on: 176261
            Blocks: 149264, 171667

Created attachment 334159

  --> https://bugs.webkit.org/attachment.cgi?id=334159&action=review

Testcase

Support for root background was added in bug 176261. However, it seems that this does not take into account shadow on the root. See the attached testcase: The orange shadow is not visible when the yellow background is present on the root.


Referenced Bugs:

https://bugs.webkit.org/show_bug.cgi?id=149264
[Bug 149264] IFrame scrolling=yes is ignored in iOS Safari
https://bugs.webkit.org/show_bug.cgi?id=171667
[Bug 171667] [Mac] Make frames fast-scrollable
https://bugs.webkit.org/show_bug.cgi?id=176261
[Bug 176261] Async frame scrolling: handle fixed root backgrounds in frames
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