[Bug 38178] Crash with Heroes VI at very begin

https://bugs.winehq.org/show_bug.cgi?id=38178

--- Comment #50 from Stefan Dösinger  ---
(In reply to Sergey Isakov from comment #48)
> Should I report this as a separate bug?
>
> fixme:d3d_texture:volumetexture_init create dxtn texture 0x31545844.
> fixme:d3dx:D3DXLoadSurfaceFromMemory decode dxtn from pitch=512 to 1024
> fixme:d3dx:D3DXLoadSurfaceFromMemory Unhandled filter 0x4.

I think that's a bug in builtin d3dx9. It should use an ARGB8 texture in
response to volume dxtn failing. Try native d3dx9 and see if it helps.
> err:d3d:context_bind_fbo >>>>>>>>>>>>>>>>> GL_INVALID_OPERATION (0x502) from
> glBindFramebuffer() @ context.c / 72

This looks unrelated.