[Webkit-unassigned] [Bug 39312] REGRESSION (4.0.5-ToT): Graphics corruption when watching video on vimcasts.org

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=39312


Adam Roben (aroben) <aroben at apple.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|REGRESSION?: Graphics       |REGRESSION (4.0.5-ToT):
                   |corruption when watching    |Graphics corruption when
                   |video on vimcasts.org       |watching video on
                   |                            |vimcasts.org




--- Comment #7 from Adam Roben (aroben) <aroben at apple.com>  2010-05-19 07:46:31 PST ---
The bug does not occur in Safari 4.0.5.

I saw this happen on youtube.com, too, with their HTML5 video player.

I tried running with the debug Direct3D runtime. Here's what I see in the debugger output window:

Direct3D9: (ERROR) :CreateRectRgn failed. Unable to accelerate Present.
Direct3D9: (ERROR) :BitBlt or StretchBlt failed in Present
D3D9 Helper: IDirect3DDevice9::Present failed: E_FAIL

This happened a few times, and then I hit an assertion in CGContextWithHDC:

    ASSERT(info.bmBitsPixel == 32);

info.bmBitsPixel is 52428, which just seems completely bogus.

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