I ran the d3d11 tests and on my machine this breaks a few of them slightly, for example, in test_clear_render_target_view_2d() I get 0xbf4d801a instead of 0xbf4c7f19 in line 15945. Not sure how big of an issue that could be. Some others look more badly broken, like test_clear_depth_stencil_view() lines 16116 and later, got 0.0.
`02f0:fixme:d3d:wined3d_format_convert_from_float Conversion for format WINED3DFMT_D32_FLOAT not implemented.` might be relevant. Let me know if you can reproduce that, if not, I'll take a closer look.