Why is the light not bouncing?

Ok so i added lights to the Scene. The area above the lamp is very dark. I was expecting the light to bounce of the walls, floors and other objects in the room. But that is not the case. Does anyone know what i have done wrong / overlooked? Thanks.

Hi,

There is no light bounce that is generated from a movable light by itself as it does not generate it owns global illumination.

There are things being worked on to make this better by having [Dynamic GI via Distance Fields][1], but this is a relatively new feature that is being worked on. There is also [Light Propagation Volumes (LPV)][2] which can be used to get the bounce light you’re looking for as well. It’s not a Production-Ready feature necessarily, but if you keep some things within reason and work within it’s limitations at the moment you can get things looking more the way you’d like. You’ll be able to control it’s intensity and other things within a post process volume.

This is standard movable light in a room:

This is with LPV enabled and the intensity set to 0.25 via a post process volume:

If this is not an option you can you always use static/stationary lighting and adjust the Indirect lighting Intensity via the details panel to get the bounce lighting as well.

Static Lighting with Indirect Lighting Intensity set to 3:

I hope this has been helpful.

Tim

Hello Tim

This is good advice - change to stationary. However on my side it working in preview/editor only. After build light I have black ceiling. Where is problem?

Thank you, Pawel