http://bugs.winehq.org/show_bug.cgi?id=29144
--- Comment #6 from Henri Verbeet hverbeet@gmail.com 2011-11-28 23:52:49 CST --- (In reply to comment #5)
I see nothing suspicious about how glVertexAttrib4hvNV is brought into the code, since all other functions brought in the same way appear to work. Therefore, the problem must be on the driver side...
Your glxinfo output does list GL_NV_half_float in the extension string, right?