DEPRECATED. This shader is unsupported, but it may still get installed with Softimage to provide compatibility with older scenes that use it. It is recommended that you replace unsupported shaders in your scenes with equivalent shaders from the current Softimage shader library.
Shader Type: Illumination (surface)
Computes translucency illumination (back illumination), which causes a projected shadow to become visible on both the back and front of an object's polygon. No reflection, transparency, or refraction is computed.