Problem With Illuminated Volumes In Version 4.0.0 Beta

[DNorman]

Reminds me of this thread.

Spot Lights in 4.0 backward spot

In 4.0 Sport lights do also project backwards a small spots. This depend to the size of the spot light, a parameter used to soften the shadow caused by the spot light before. Now all my scenes render different, I get the white round spot on a ceiling where I used a spot light. I often just use them in addition and that will reveal where ever I placed one. So, anyone knows how to turn that off? Avoid it? In the changes note its written: Use the incoming socket of the geometry shader node. But…

But that was spot lights.

Lights have been reworked in 4.0

Yes it is related.
Here I have a floor, a ceiling and 2 lights a white point and a red spot.
Note that the ceiling and the volume are totally lighted inside the lights radius.

The same file in 3.6
There is no “radius lighting”

The 4.0 one is agx and the 3.6 filmic but that is not the point.

Here is the 4.0 one in filmic for those who like to compare that.
Note that the point lamp on the left has White light, (or should be).