Hi there,
I have those weird black splotchy stains on my meshes when i bake lights. It happen with nanite enabled. I don’t know what to do can you help me ? thanks
These are two different issues.
The first image is due to lightmass, make sure you’re building your lighting at production quality. In some cases it may be necessary to place lightmass portals in openings where the lighting is coming from. If you’re using GPU lightmass the denoiser should be taking care of this but if not, you can try increasing the sample count.
Your second image is showing a self-shadowing error from DFAO. DFAO is used when a movable skylight is set to cast dynamic shadows (as is the case in the mesh previewer). Presumably the mesh is paper thin or using a two-sided material, or using two-sided distance field generation. Sometimes it just happens because of limited distance field resolution but that doesn’t look like what is happening here. It’s unrelated to light baking.
Thank you for you very detailed answer, i tried gpu lightmass as you mentioned it and it solved my problem actually 