Here's a link for more info:
http://www.redshift3d.com/products/redshift/#sthash.Yh4KgwLr.dpuf

Seen this mentioned (with example) on this thread on luxology forum (towards bottom of page):
http://forums.luxology.com/topic.aspx?mode=Unread&f=4&t=79380#NewPost

Bummer! looks like it only works with 64-bit versions of Autodesk Softimage (2011 and higher) and Autodesk Maya (2011 and higher). Autodesk 3ds Max is currently in development.