Directory Structure
1. images:
        - Rendered images (.tif) using PRMan.
2. prman:
        - RenderMan shader source code (.sl) in the RenderMan shading language,
        - Compiled shaders (.slo) using Pixar Photorealistic RenderMan (PRMan), and
        - RIB files (.rib) for testing,
        2.1. prman/textures:
        - contains sample environment maps (.env), if needed.
        2.2 prman/include:
        - directory contains macros
3. bmrt:
        - RenderMan shader source codes (.sl) in the RenderMan shading language,
        - Compiled shaders (.slc) using BMRT, and
        - RIB files (.rib) for testing,
        3.1 bmrt/textures:
        - contains sample environment maps (.tif), if needed.
        3.2 bmrt/include:
        - directory contains macros
        3.3 bmrt/include:
        - directory has compiled shaders needed to render the RIB file using BMRT
         
These shaders are ready to use with PRMan, BMRT, or any other Renderman compliant
renderer such as Air or RenderDotC.

Enjoy!