Enabled – When enabled, the light casts shadows. Disable this option to turn off shadows for the light.
Color – Controls the color of shadows for this light. Note that anything different from black is not physically correct.
Bias – Moves the shadow toward or away from the shadow-casting object (or objects). Higher values move the shadow toward the object(s) while lower values move it away. If this value is too extreme, shadows can "leak" through places they shouldn't or "detach" from an object. Other effects from extreme values include moire patterns, out-of-place dark areas on surfaces, and shadows not appearing at all in the rendering.
Shadow Mask – Specifies a texture for the shadows for this light. If used, it overrides the Color parameter of the Shadows rollout. objects that cast shadows when light is directed at them.
