[Bug 12641] WineD3d does not respect GL_EXT_fog_coord

http://bugs.winehq.org/show_bug.cgi?id=12641

--- Comment #4 from H. Verbeet   2008-10-17 16:22:06 ---
The way I read that is that vertex.fogcoord and fragment.fogcoord are
unavailable, while result.fogcoord is available. The implication is that the
hardware still needs to be able to source the fogcoord from something else than
the fragment depth. Iow, even though the behaviour would be well defined, it
doesn't make a whole lot of sense to implement ARB_vertex_program but not
EXT_fog_coord.