What the Light Affects
Every lamp has a set of switches that control which objects receive its light, and how it interacts with materials.
- Causes the lamp to only light objects on the same layer.
- The light produced by the lamp is subtracted from the ones “available” on the surfaces that it hits, which darkens those surfaces instead of brightening them.
- No Diffuse
- Prevents the lamp from producing diffuse light (it doesn’t really “light” things).
- No Specular
- Prevents the lamp from producing specular highlights.