Hi. I am trying to make an interior scene. I want soft lighting in the room. I don’t want to build the lighting. I want the scene to be fully dynamic. But I can’t use the bounce card method. When I switch off the skylight and direct light to see the effect of spot light, there’s no indirect lighting. The room is dark. How should I go about this?
As far as I know, UE4 has only one official implementation for Dynamic GI, and it is called LPV (Light propagation volumen):
You could alternatively use Nvidia’s VXGI, but you will have to download that branch from GitHub, compile and build the engine.
https://forums.unrealengine.com/community/general-discussion/90111-nvidia-vxgi-integration
To me the second one gives better results, but its way more buggy.
By default you don’t have dynamic GI, what you have is screen space effects like reflections and AO, which gives a hint of dynamic GI but it is not.