![]() ![]() ![]() These Portals’ materials must have the Portaloption enabled ( Illumination material channel). GI Portals: Openings in walls through which light (e.g., from outdoors) enters the room.The different application areas of GI Portals and Polygon Lights: ![]() ![]() Portals are useless in conjunction with an outdoor sky illumination. Hence, GI Portals and Polygon Lights are primarily effective when placed where light is emitted from smaller surfaces, as is most often the case indoors where light enters a room through a window or door. Windows, lamps or other light-emitting objects (e.g., televisions) can be used as objects at which GI Portals or Polygon Lights can be placed in order to optimize GI calculation. The Rays are concentrated on the GI Portals and Polygon Lights ( Diffuse Depth = 2).
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