[Webkit-unassigned] [Bug 55514] New: [chromium] invalidating a rotated border causes different pixels to be painted

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=55514

           Summary: [chromium] invalidating a rotated border causes
                    different pixels to be painted
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebCore Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: tony at chromium.org
                CC: senorblanco at chromium.org, jamesr at chromium.org


Repro steps:
1) Load the attached file in test_shell.exe.  You should see a box rotated 20deg.
2) Drag the window off screen and back.
3) If you look carefully, you'll see that the edge is now a tiny bit different (a bit darker?).

If you reload, the edges return to the lighter state.

I suspect this is a problem in skia since I couldn't repro on mac.  It's also hard to repro on Chromium because it saves a backing store of the image.  It's the extra invalidate that causes the border to change.

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