RenderMan shader pack contains:
            1. RenderMan shader source code (.sl) in the RenderMan shading language,
            2. Compiled shader (.slo) using Pixar Photorealistic RenderMan (PRMan),
            3. compiled shader (.slc) using BMRT,
            4. RIB file (.rib) for testing,
            5. Rendered image (.tif) using PRMan,
            6. 'include' directory contains macros,
            7. 'shaders' directory has compiled shaders needed to render the RIB file using BMRT, and
            8. 'textures' directory contains sample environment maps (if needed).