Hello, a few days ago, I tried to switch the lighting in my project from Lumen to Baked Light, but it seems I wasn’t successful. The ceiling and floor are completely black no matter what I do. I enabled Generate UVs, adjusted the Lightmap Resolution, but it didn’t work. Then, I fixed the normals of the meshes in Blender, but that didn’t help either. I activated the two-sided option in the materials, but still no luck. I reset the light settings in World Settings to default, yet it didn’t resolve the issue. I also changed the Post Process settings from Manual Exposure to Auto Exposure, but that didn’t work either—lights started to glow excessively, and it felt like they’d keep shining forever, nearly making my eyes pop! (Screenshot by Lightshot). Afterward, I added a Lightmass Importance Volume, but that didn’t solve it. I checked the Lightmap Density, and the floor was black while the ceiling was blue (Screenshot by Lightshot). I tried to fix it, but I couldn’t figure it out. I think that covers everything I’ve attempted.
Hi @HorizonNK,
It looks to me like your lights just aren’t bright enough. The fact that they are able to cast at least some light onto the geometry means it’s not a lightmap issue.
This is a pretty common phenomenon actually. An unbaked light will usually appear a lot brighter than once it’s baked down. I would try greatly increasing the brightness of your lights to confirm that this is the issue.
Some settings you can adjust to get brighter bakes that more closely align with what you saw with Lumen:
-Intensity
-Rebalance your attenuation radiuses / disable Inverse Squared Falloff and use a custom Light Falloff Exponent
-Indirect Lighting Intensity
Keep in mind too that without Lumen, you are going to have to set up your own global illumination / fill your shadows in manually with baked lights.
Good luck! Let me know if increasing the brightness helps.
Thank you for the suggestion, but it seems the issue might not be related to that. (See the screenshot here: Screenshot by Lightshot) In my scene, the light intensity was originally set to 1300. However, I recently increased it to 100,000.0, rebuilt the lighting, and noticed no significant change, only the walls became slightly brighter. Afterward, I disabled Nanite on the floor, and it started working, though I can’t say the same for the ceiling. Additionally, the lighting on the walls appears very uneven and distorted. It seems the problem might not be related to the light intensity settings. For context, my scene does not include a Reflection Probe; I only have a Lightmass Importance Volume present.