In certain cases it may be useful to have the mask of a layer to follow the same projection as the layer it is attached to. For example, when using Warp projection and projecting a Fill layer with a number of vertices, we may need the mask to follow the same transforms.
There is actually a way to do this using a Substance material with an Opacity channel with User Data set to "IsAlphaChannel = True". This enables to use Warp projection on material with opacity channel, the latter masking all the other channels as well. I would like this feature to be possible in Painter without the need to use an external Substance.