[Bug 10758] myst4 crashes during startup

wine-bugs at winehq.org wine-bugs at winehq.org
Sun Oct 5 11:00:05 CDT 2008


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





--- Comment #8 from Jim Cameron <jim_24601 at btinternet.com>  2008-10-05 11:00:02 ---
I've now been able to get onto a Windows machine with Direct3D 9 and done some
testing. My findings:

1. IDirect3DDevice9::SetDepthStencilSurface() does not increment the reference
count for the IDirect3DSurface9.
2. Releasing a IDirect3DSurface9 does not delete the surface if it is the
current depth-stencil surface, even if its reference count goes to zero.
3. IDirect3DDevice9::Reset() fails with a D3DERR_INVALIDCALL if an external
reference exists to the current depth-stencil surface.
4. IDirect3DDevice9::Reset() succeeds if no external references exist to the
current depth-stencil surface. In this case, the surface is deleted.
5. A user-supplied depth-stencil surface whose reference count is zero will be
deleted if a new surface, or NULL surface, is selected into the device using
IDirect3DDevice9::SetDepthStencilSurface(). The auto-depth-stencil surface will
not be deleted in the equivalent case.

The Wine bug is with number 2. Wine will not delete the auto-depth-stencil
surface if its refcount goes to zero because it is marked as implicit. But it
will happily delete a user-supplied depth-stencil surface when its refcount
goes to zero even if it is currently selected in a device.


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