you'd probably have to define multiple materials HOWEVER this MAYnot be the case with the new shadeC in development, so you may end up having to redo all youre doing now

team INOV:
CURRENT PROJECTS: http://www.youtube.com/user/teamINOV?feature=mhee
FOLLOW US on twitter: http://twitter.com/team_iNoV
check our blog: http://scionwars.blog.com/
shaders: http://shadec.project-havoc.com/
networking: http://www.anet-plugin.com/