Inside the Mind runs down some of the new nodes in Houdini 20, showing how to make masks by painting in Texture Space.
Houdini 20 brings new nodes that allow you to paint directly in texture space. Painting directly in the viewport could help create masks where you no longer have to subdivide your mesh to get more detail into your masks.
Here, Inside The Mind shows how to create masks using UV space. You don’t have to subdivide your mesh to a high resolution to get excellent detail for masks.