BRL-CAD includes numerous shaders that let you specify different optical effects during ray tracing.

This task involves writing a brief tutorial that describes what shaders are and how one specifies them for geometry. How shaders are specified is already described in detail in the Introduction to MGED document.

Code:

• src/liboptical/sh_*.c (for available shader names and corresponding options)

References:

• http://brlcad.org/w/images/2/2c/Optical_Shaders.pdf
• http://brlcad.org/w/images/c/cf/Introduction_to_MGED.pdf