[Webkit-unassigned] [Bug 82399] New: Lack test coverage for multisampled WebGL composited output path

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=82399

           Summary: Lack test coverage for multisampled WebGL composited
                    output path
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jamesr at chromium.org
                CC: kbr at google.com


On chromium linux, we appear to not have any layout test coverage for the composited output path for multisampled WebGL - patch 3 on https://bugs.webkit.org/show_bug.cgi?id=82275 breaks this path completely in chrome (no pixels show up) and fast/canvas/ passes cleanly.  Either we don't have tests, the failure (lack support for shared FBOs) does not exist in the test WebGraphicsContext3D implementation, or all tests are marked as failing on chromium linux.

I've confirmed that the GC3D implementation we use in DumpRenderTree does advertise support for the multisampling extensions.

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