A texture atlas is a single image map that is applied to a model that has been unfolded flat. It often shows multiple materials on a single map and can only be used for a single model. Because this makes the model difficult to edit and the materials challenging to transfer, we recommend that you avoid using texture atlases at all costs. To the right you can see an example a texture atlas. However, in our system this model should not use an atlas. It should have one texture/material for the picture and another texture/material for the frame.