I am encountering a strange problem when working with random walk/specular material. Here is a scene in which the model is inside a room which has only 1 big light plane right under the ceiling. There is a second light plane outside the room, it does not effect the interior since it faces away from the room and I dont have a material applied to the window glass. The problem is, when i turn on this second emitter, the skin gets really really dark. It reminds me of when i turn of fake shadow in the specular material.
Here is a picture of the scene when the second (outside of the interior) emitter is turned off, everything is normal:
And here is how the skin looks like when i turn on the emitter:
Notice that only the skin (specular material with random walk medium) is effected. I tried using diffuse and glossy materials for the skin and this problem does not arise.
Can anyone explain what is going on here? I tried all kinds of settings on the emitters, turning on and off surface brightness and/or normalization.
I really dont know why this is happening.
Here is a link to the orbx file if anyone wants to check the scene. The ceiling emitter is called "Plane"- The emitter outside is called "LightPlane":
https://www.mediafire.com/file/fy0093lh ... .orbx/file