Light passed through the walls and illuminated the ground

Hi All, There is a light on the wall in the room. It should be dark outside . Do I need to turn on shadows ?
Or did I miss any attributes ?

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Yes, you should setup a shadow generator. However, it will only work with a directional, spot or point light.


Or you could split the meshes and rely on the includeOnlyMeshes and such to ensure no light leaking.


Thanks. Both the following two geniuses’ replies will solve the problem