- In last week's video, we saw how to save masks as alphas and then turn them back into masks. And it's a really great trick, but it does have some drawbacks. It relies on the model having Uvs laid out which can be an issue if a model is too dense or complex for Uvs. And it also relies on converting the masks to an alpha. And the alpha can be limited by a maximum eight K resolution. Sometimes you need a mask that has more detail than the alpha can hold.In these cases, the solutions...