Related to computer games' engines and 3d graphics software. For the use of both shadow and light in GUIs and for the use of lighting with respect to programs using hardware such as cameras, that requires code to control the lighting. Must be used with other relevant tags distinguishing the programming language and framework being used. e.g. unity 3d Not to be used with light, as is used in physics having wave and particle characteristics.
Related to the computation of reflection models like the Phong Model or Blinn-Phong Model and the per-vertex (Gouraud) and per-pixel shading models (Phong).
