Can i make UVs outside of the 0-1 Space?

I’m wondering if i can make object UVs outside the 0,1 space for tiling textures, stuff like big objects, and big wall sections, Or is there a better way to do it?

I know its Technically possible, since i’ve done it, I just don’t know if it has some performance implications, or something else that’s wrong, I want to make 100% sure that it works before i commit to doing it that way.

Thanks in advance,

No problem with having uv’s outside the 0 to 1 space as long as you also add a second uv channel where everything is inside 0 to 1 space and there are no overlapping uv’s.

By having a clean second uv channel UE will use it for lightmass baking which means you can do what you like in the first uv channel and it won’t affect light baking.

If you don’t add a second uv channel then UE will use the first channel for light baking which is where you will run into problems if you go outside the 0 to 1 space or if you have any overlapping uv’s.

I understand that the baking takes automatically the second uv channel. I have two channels channel 0 with the UVs outside the 0,1 space and the channel 1 created automatically with “generate unique UV’s” . Saved the SM and still got same error.

Saved the SM and still got same error.

What error might that be?