Polygon Mask

Hello All,

I am fairly new to vvvv, and I am trying to project on to an irregular shaped screen. I need to crop the layers that I am projecting to a polygon shape, I would assume.

I found an example at Draw object for mask but I need to make this work with dx11 nodes. Everything else I have made is for dx11.

If anyone has advice, I would greatly appreciate your time and attention.
Kind regards,