3d max Spotlight, floodlight
The rectangular box of course becomes a black stuff, anything must have lights to see, no lights what are black one
And when you build a target spotlight, the system lights are gone, no lights
You can start to see the red cuboid, because there is a system automatically added lights
The system will automatically add lights, but once the light, the system lights disappeared
3DMAX has such a feature. If no lighting is created in the scene
