http://bugs.winehq.org/show_bug.cgi?id=27194
--- Comment #19 from DL dredgingthelake@gmail.com 2011-07-07 04:25:17 CDT --- Probably not related to this bug, but with the current GIT version, Witcher 2 fails to load with a black screen and this message:
shader.c:312: unsafe_impl_from_IDirect3DPixelShader9: Assertion `iface->lpVtbl == &d3d9_pixelshader_vtbl' failed.
I'll run a regression test and open a new bug report if it's unrelated.