Greetings. I’m new to lightmapping and lighting in general. I figured out how to create basic maps but have noticed a bunch of streaky lines in some places. I’ll include some pictures to show what I mean. All of the objects have a material that is just a plain colour, no albedo, so it should have a consistent shadow/colour.
Other, less random, shadows appear along the seams of all my touching objects. They are touching seamlessly, and there are no artifacts when I use realtime lights. In all my baked scenes I see a dark shadow along each touching edge.
My secondary issue, which is shown in the first image, is that I have two models that I made in blender, exported as .obj files, and imported into unity. They both start off the same colour, with the same settings (so far as I can tell). However, in the lightmap, one of the models goes super light and the other stays pretty much the proper colour. In the image they are the dark grey/black objects in the corners of the middle, and the super light streaky grey object in the middle of the edges of the object in the center.