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The reflective, refractive, and absorbtion qualities of a material affect its interaction with light, thus affecting the ambient, diffused, and reflected lights in your scene.
The properties of a material can affect ambient light by changing the color of the ambient light. That ambient light's color is then seen on the shadow parts of every object in the scene.
A translucent material affects diffuse light as it scatters and bends the light passing through it. Diffuse light has both color and intensity. The color of a diffuse light comes from the color of the substance that scatters the light. The intensity of the diffuse light depends on how much the light is refracted by the substance; the closer the incident angle is to a right angle, the brighter the diffuse light is.
How a substance reflects light affects how shiny the object appears. A substance like chalk reflects light in all directions with equal intensity, so it appears dull. On the other hand, a substance like a mirror reflects light in only a certain direction, so it appears shiny. How shiny or dull a surface appears depends on how that substance reflects light. Shiny surfaces show a shiny spot (specular highlight) that is very bright compared to the surrounded parts because most of the reflected light comes off in a single predominant direction.
N64 cannot set these elements, but it is possible to express them indirectly.
Use the following N64 functions to set up lighting:
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Last Updated March, 1999