2009

Top: Top view of an omni light

Bottom: Perspective view of the same light

An Omni light casts rays in all directions from a single source. Omni lights

are useful for adding "fill lighting" to your scene, or simulating point source

lights.

Omni lights can cast shadows and projections. A single shadow-casting omni

light is the equivalent of six shadow-casting spotlights, pointing outward from

the center.

When you set a map projected by an Omni light to be projected using the

Spherical, Cylindrical, or Shrink Wrap Environment coordinates, the map is

projected in the same way as it would be mapped to the environment. When

you use the Screen Environment coordinates or Explicit Map Channel Texture

coordinates, six copies of the map are projected radially.

TIP Omni lights can generate up to six quadtrees on page 8100, so they generate

ray-traced shadows more slowly than spotlights. Avoid using ray-traced shadows

with omni lights unless your scene requires this.