[Webkit-unassigned] [Bug 76239] New: DrawingBuffer is not cleared correctly

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=76239

           Summary: DrawingBuffer is not cleared correctly
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zhuyongsheng2010 at gmail.com
                CC: mdelaney at apple.com


In the DrawingBuffer::clear(), when m_size is not empty, it should be set as empty.
Because it makes 's_currentResourceUsePixels' is substracted with m_size again when DrawingBuffer is destroyed.
The issue is found from chromium. See http://code.google.com/p/chromium/issues/detail?id=104740
The patch is ready. I'll submit it to webkit.

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