is a graphics directive which specifies that surfaces of 3D graphics objects that follow are to be taken to glow with color col.

specifies that there is no glow.


  • Glow is added to diffuse and specular reflection components to determine the final rendered color of a surface.
  • Glow is a color component independent of simulated illumination.
  • Glow[] is equivalent to Glow[Black].
  • A surface can be specified as having an absolute color col by giving the combination of directives Glow[col], Black, and Specularity[0].
Introduced in 2007