Skylight Portals

If the option Use as Skylight Portal is on, the entity will be used as a portal geometry for skylight luminances. The option is 'Off' by default.
Portals are useful for interior scenes for example, where sky light is entering by small openings which are difficult to sample efficiently. By marking explicitely the openings using portals, the engine can render difficult situations at a much higher quality in less time.


For all Luminance: If On the portal will be used for all luminances with skylight in scene, no matter how this sky light was created (drawing luminance or graphic luminance). If Off the portal will be used for this objects luminance only. The option is enabled if option only if Use as Skylight Portal is On. The option is 'On' by default.

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