This is kind of a newbie question so apologies, but I had a search through and couldn't find the answer anywhere. Essentially what I'm trying to understand is how bounce light works in indoor environments. I understand that outdoors when you have an light_env any face that can see the skybox but is not lit directly by the sunlight angle is lit by the ambient light, thus creating light in shadows so they aren't completely black. So what's the indoor equivalent? I.e. looking at a decompiled lumberyard map, the spawn room (that's completely encased when the doors are closed to begin with) is lit only with two downward facing spots and yet the roof area above the spots is not completely black. Why? What's lighting that? Again I'm a newbie to all this but thank in advance for any help.