Gelato is not a Renderman compliant renderer, but with the aid of plug-ins, Gelato can read Renderman scene files and shaders. Two tools have been developed by third parties to do this. One is a Gelato plug-in that allows Gelato to read RIB scene files and the other is a tool that translates Renderman shaders into Gelato Shading Language. They are both free of charge and are links to the download are available on the Gelato download page.