[Webkit-unassigned] [Bug 75077] New: [Qt] CSS - Rounded item with gradient background has grainy edges on MacOS

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=75077

           Summary: [Qt] CSS - Rounded item with gradient background has
                    grainy edges on MacOS
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Mac OS X 10.6
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P3
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: sami.lehtonen at digia.com


Created an attachment (id=120298)
 --> (https://bugs.webkit.org/attachment.cgi?id=120298&action=review)
HTML page to reproduce the issue

Overview: 

    If there is a CSS item in webpage which uses gradient background and is rounded, then the item's edge is grainy (if the background color is solid then the edge is smooth). If there is a border (min 2px) then it is not grainy (if the border is 1px then it is grainy).


Steps to Reproduce:

    Open the attached gradient-border-bug.html webpage with Qt Demo Browser (can be found from QTDIR/demos/browser) that is build with Qt 4.8.0 in MacOS.

Actual Results:

    The Edge of the middle circle is grainy. Please see the attached image's top right screenshot's the middle circle.


Expected Results:

    The edge should be smooth just like when using Windows/Linux. Please see the attached image's bottom right screenshot's the middle circle.


Build Date & Platform:

    QtWebKit 2.2 with Qt 4.8.0 on Mac OS 10.6.8


Additional Builds and Platforms:

    When using QtWebkit 2.2 (Qt 4.8.0) this can be reproduced only in Mac OS. This cannot be reproduced in Linux if using QtWebkit 2.2 but if using QtWebKit 2.0 (comes with Qt 4.7.4) then this can be reproduced.

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