Lihgt Source Not Added To The Scenario In `RendererSceneCull::_update_instance()` When Added Through Duplication

The main source of natural light on earth is the sun. Historically, another important source of light for humans has been fire, from ancient campfires to modern kerosene lamps. We catch glimpses of its nature when a sunbeam angles through a dust-filled room, when a rainbow appears after a storm or when a drinking straw in a glass of water.

When light hits a transparent object, it passes through it almost completely without making a significant shadow.