Thank you for your answer but I finally found out how to do it. Actually there's no option to specify the materials or not but it's because I didn't use UVs on my mesh. Now it works perfectly fine.

Hi everybody,

can someone explain to me how to export materials from Mudbox because Octane doesn't recognize the materials when I import the obj.

I'm new to Mudbox so maybe there is something I do wrong because I just create materials and assign them and then I export with an obj file.
Is it how ...