I am facing a problem with light sources in UE 5.1.
I was using an emissive material for a ceiling in a closed room. All walls are made with simple cubes and only the ceiling has the emissive material. The floor is supposed to be a marble floor but unfortunately there is some issues with the reflections.
Can anyone help me out on what settings to look for or how to address these type of lighting reflection problems? Pics show the emissive BP, and the floor with the reflections, and with a spot light to show what is looking light in “normal” conditions.
Ps.: Initially I wanted to use rect lights but somehow rect lights and point lights don’t emit any light, but the spot light does. I tried opening a new project but somehow it does not work. When I try in UE 5.0. I get no issues. Is there a new setting or so that has to be enabled/disabled?
Im not sure if something changed drastically in rendering, but emissive materials are not a light source.
In fact, you have to go out of your way to define light propagation volumes in 4.*.
Now I know they supposedly added automatically lit emissive materials or whatever nonesense they want you to belive, but its exactly that. Nonesense. It’s not a light source so it won’t really work as an actual light.
The only way to properly light up the level would be to actually add a rectangular light to the scene.
And your emissive material will still show up in reflection captures, so if you have a marble floor the end result being white - or a reflection of the ceiling is also sort of normal.
In spite of the fake volume lighting vs real lighting option.
Thanks so much! That works fine with spot lights. The only problem I am having right now is that the lights in general seem to not work …
I dragged in a rect light but it doesn’t shine any light. As mentioned I have tried opening a new project to see if i just messed up something in my current project but in all projects I create with 5.1 I cannot use rect or point light to shine some light (in 5.0 no problems).
I am using a macbook pro m1 (2021) and somehow if I drag in rect or point light they are initially stationary while the spot light is instantly movable (changing them to movable doesn’t change anything). Also when I restart UE/macbook the rect/point light shine light sometimes for a second or 2 or so then turn off immediately. Any idea what might be happening here?
