[Bug 5668] Crash in IDirect3DViewportImpl_SetBackground

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5668





------- Additional Comments From stefandoesinger at gmx.at  2006-22-08 17:13 -------
trace:d3d7:IDirect3DImpl_3_CreateViewport (0x165d48) creating implementation 
at 0x1f3f98.
fixme:d3d7:IDirect3DDeviceImpl_3_GetStats (0x1b3eb0)->(0x1f3f98): Stub!

Is this maybe an application that uses native d3dim.dll? I've seen such an 
oddness with that library. What basically happens here is that an 
IDirect3DViewport interface is created and then the caller requests D3D 
statistics to be written to that address, which is obviously nonsense and will 
destroy the viewport's private data. Because of this the device pointer is 
NULL when the viewport is used.

I suspect that GetStats should return an error in this case, what has to be 
done is to write a test case for this behaviour and if windows returns an 
error implement simple object tracking for viewports and check the pointer 
against stored interface pointers in GetStats.

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