[Webkit-unassigned] [Bug 95140] New: [chromium] WebGL canvas cleared by printing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=95140

           Summary: [chromium] WebGL canvas cleared by printing
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jamesr at chromium.org
                CC: kbr at google.com, zmo at google.com, gman at google.com


Load up a page with WebGL that doesn't repaint on every frame (for instance http://trac.webkit.org/export/126806/trunk/LayoutTests/fast/canvas/webgl/webgl-composite-modes.html) and print.  The webgl canvas content is gone after printing if the preserveDrawingBuffer attribute is false.  It appears the readback is destructive on the canvas.

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