[Webkit-unassigned] [Bug 83400] New: [chromium] Hundreds of mac failures are due to a slightly different color repaint background

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Fri Apr 6 15:09:11 PDT 2012


           Summary: [chromium] Hundreds of mac failures are due to a
                    slightly different color repaint background
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Tools / Tests
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: ojan at chromium.org

For example, see http://test-results.appspot.com/dashboards/flakiness_dashboard.html#showExpectations=true&tests=fast%2Ftable%2Fempty-section-crash.html.

The repaint background on the platform/chromium-win and platform/chromium-linux results is #575757. On the Chromium mac bot, some pixels are #575757 and some are #565656. Not really sure how image_diff translates that to the whole background not matching.

The platform/mac result has a background that is #6a6a6a, with a color profile. Diffing the chromium win/linux result with the platform/mac result only shows a diff on the text though (i.e. the backgrounds match). I assume image-diff accounts for the color-profile somehow.

Also, curiously, on some of the snowleopard bots, we sometimes get a result that matches the platform/mac result: http://test-results.appspot.com/dashboards/flakiness_dashboard.html#group=%40ToT%20-%20webkit.org&showExpectations=true&tests=fast%2Ftable%2Fempty-section-crash.html

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