SubDiv option: Don't smooth corners

IStonia,
When you have time (and if this feature doesn't already exist), could you please implement something like vx_boundary_edge_and_corner from OpenSubdiv specs into CC subdivision algorithm used by NVil? As an option of course.

Currently subdivision in NVil works like vtx_boundary_edge_only.
http://graphics.pixar.com/opensubdiv/docs/subdivision_surfaces.html#boundary-interpolation-rules

+1 for this request.

IStonia, any chance for this feature to be implemented?

Try this
http://www.digitalfossils.com/Download/NVil-Dec-04-17.rar

* Vertex mode > Geometry > Set Subd Hard Corner. Mark/Unmark selected vertices as hard corner in subdivision operation. The vertex must be a border vertex and connecting to only two edges.