I just imported this model to my 5.3 from a different project (UE 5.2) and it came in with these random rainbow spots only on certain assets. I’ve tried reassigning textures, and restarting the engine. Does anyone know what could be causing this to happen? Or if it’s possible to fix it?
Hey there @KarmaCreations! Welcome back to the community! Often when you find rainbow artifacting that changes when you move it’s VRAM based, though not this case, but in this case it looks fuzzy and stationary, like a vertex paint. Are there other material slots on the asset? Do the colors change when the mesh moves or is reimported?
There is only one material slot on each of these assets, and it does not move when it is moved in world. I imported everything to blender just to see if the would show up on the model without any textures and they only showed up when textures were applied.
I also opened each one of these textures to see if it was an artifact on the texture itself and I didn’t see anything.
First check if its caused by mesh or material.
So apply on of default materials from engine or starter content, see if those artifacts are gone.
Edit:
in unreal engine open mesh. and see UV map if its correctly done.
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I think its the UV maps, when I opened them in Unreal there was a fair amount of verts outside of “UV Box” not sure if I’m going to actually use this model but I’m willing to bet that is the issue! Thank you for the response!
1uv box shows what area is not repeated.
Everything outside just repeats texture.
check if there are no degenerated polygons etc.
and check (make sure) that those artifacts are there when you apply (inside unreal engine) any default material that uses diffuse (like default checker from engine)
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