[Bug 10758] myst4 crashes during startup

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10758





--- Comment #9 from Jim Cameron <jim_24601 at btinternet.com>  2008-10-05 15:36:51 ---
Created an attachment (id=16488)
 --> (http://bugs.winehq.org/attachment.cgi?id=16488)
Keep D3D9 device's current depth-stencil surface from being deleted when its
refcount goes to 0

Attached is a proof-of-concept patch that fixes the problem with Myst IV. I've
added a private reference count to IDirect3DSurface9_Impl that is incremented
when a surface is passed to SetDepthStencilSurface() and decremented when it is
no longer required. Wine's Direct3D 9 tests pass with the patch.

I haven't included a test for this specific case, nor considered previous
Direct3D interface versions or other surface types. The private reference count
may also do strange things with implicit surfaces (the auto-depth-stencil
buffer). We should look into all these things if we do adopt this approach.


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