OptixMesh & Multiple Materials

2 Questions:

  1. Is OptixMesh intended to be a complete replacement of the old ObjLoader class?

  2. How do I make use of a .obj that contains multiple materials? I have a model that contains some light-colored faces, and some dark-colored faces, yet when rendered in OptiX, it appears to be all the same default material. How do the material properties get passed into the shader .cu file? Which SDK examples have a good example of .obj w/ multiple materials in it?