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List:       webkit-unassigned
Subject:    [Webkit-unassigned] [Bug 92811] New: [Chromium] compositing/video-page-visibility.html needs reworki
From:       bugzilla-daemon () webkit ! org
Date:       2012-07-31 23:37:03
Message-ID: bug-92811-2851 () https ! bugs ! webkit ! org/
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https://bugs.webkit.org/show_bug.cgi?id=92811

           Summary: [Chromium] compositing/video-page-visibility.html
                    needs reworking to be deterministic
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned@lists.webkit.org
        ReportedBy: pkasting@google.com
                CC: jamesr@chromium.org


A description of compositing/video-page-visibility.html from jamesr:

"That test is (effectively) a repaint test.  The way repaint tests work is, on each \
paint we basically draw a 50% opaque gray rectangle over the whole viewport, then \
paint the rect(s) that were invalidated since the last paint at 100% alpha.  On this \
test, we do a bunch of paints with no damage, so you see the first paint at 1/2^N \
alpha, where N is the number of repaints.

"Unfortunately, on this test I don't think we care at all about N, and I think N \
isn't entirely stable.  File a new bug to rework the test -- in its current form it \
isn't telling us anything except that we aren't hitting any ASSERTs (which is \
somewhat useful)."

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