Specify lighting algorithm
lighting selects the algorithm used to calculate the effects of light objects on all surface and patch objects in the current axes. In order for the lighting command to have any effects, however, you must create a lighting object by using the light function.
lighting phong interpolates the vertex normals across each face and calculates the reflectance at each pixel. Select this choice to view curved surfaces. Phong lighting generally produces better results than Gouraud lighting, but it takes longer to render.