I have simple model (let's name it 'cube'). I also have a collection of seamless PBR materials (represented by square diffuse/metallic/roughness/AO/normal maps).
Goal: apply such seamless material to the top face of this 'cube'. How to unwrap this model to reach this goal without editing/scaling textures?
Should I use multiple UV maps (one for top part of this 'cube' and one for other sides)?
Edit: This particular model eventually will be exported to Unreal Engine (and it will be used with already prepared PBR materials). So approaches that use Blender's materials (= Blender's rendering system) in my case won't work.