The LightOccluder2D's light mask. The LightOccluder2D will cast shadows only from Light2D(s) that have the same light mask(s).
The OccluderPolygon2D used to compute the shadow.
Construct a new instance of LightOccluder2D. Note: use memnew!LightOccluder2D instead.
Occludes light cast by a Light2D, casting shadows.
The LightOccluder2D must be provided with an OccluderPolygon2D in order for the shadow to be computed.