No because the 15 meshes would probably cost more memory. You would need to load 15 different meshes. 15 material instances should be much cheaper. The atlas map would depend. I mean what do you include. I definitely wouldn't have the full canister but with different labels 15 times. That would require much higher texture…
If I make a uv offset function in a material instance to decide what part of the texture map is shown on the model, doesnt that mean that I have to make 15 different materials, all with different uv offset values? Isn't it all the same if I make 15 different meshes that has 2 material instances, one with a material for the…
No currently I have one material for the cannister itself and then one atlas-material with all the labels where I place the 15 uv-shells differently for each mesh. So all cannisters share one "main" material and then the second texture is placed where the label is. Both mats are only 512x512.