Where is all that light coming from ?

Development Rendering
1

Hello, i have a room here, and there is no light in it, there some outside, but not in there.

I have incredible amount of unlogical light, even in the small dressing at the end of the room, it’s perfectly lit inside. I even have a basement which is TOTALLY COVERED so it should be dark inside, and we can perfectly see… i don’t understand, all my walls seem to have weird lights on it coming from somewhere i don’t know…
In the third pic, light is equal everywhere, the scene is geometrical symetric, and i have one wall super bright, the other one not lit, and these weird transitions between walls and ceiling…

Can seomeone help me or point to some articles to help me ?

Thanks so much

2

It’s coming from your skylight. Skylights don’t care about inside and outside, they just illuminate everything.

There are two main solutions:

  1. Delete the skylight ( this is fine if you are only doing indoor stuff ).

  2. Move to a dynamic skylight ( this is if you have indoor and outdoor ).

If you switch the skylight to dynamic and it doesn’t help, there are two things to look at:

  1. Mesh distance fields ( that’s how shadows work with a dynamic skylight )

  2. Rebuild light just once ( even if you have a totally dynamic system ).

4

Hey guys, thanks for the reply, deleting skylight or skysphere or everything except light source give me the same result…
Make it movable doesn’t help either…

5

I faced this similar issue. To resolve this, I just had to change the Dynamic Global Illumination Method to Lumen.