http://bugs.winehq.org/show_bug.cgi?id=35783
--- Comment #32 from Sam Watkins sam@nipl.net --- Created attachment 48945 --> http://bugs.winehq.org/attachment.cgi?id=48945 hacky patch to wine, to prevent Risk of Rain from freezing
The patch highlights where the problem is occuring, and fixes the problem for me, but is not suitable to incorporate into wine upstream as it disables d3d fog entirely.