I tried a hand at using radiosity with a simple scene and it worked like a charm. Then being bold as I am, I loaded my 350z model which is made of a bunch of meshes and splines. Some elements of the scene have more than one material. I let the solver run to completion. At the end of it when I clicked Replace Meshes, Blender complained that maximum number of material indices reached. Now some parts of the model did not retain their original materials at all. Is there a way to apply the radiosity solution to complex scenes without this material index limit of 16?
One more question, if I have sub-surf on for some meshes which aren’t converted, does radiosity use the control mesh or the final mesh?