I just wanted to mention one other issue that I had in case someone else comes along with the same problem.

After the stencil buffer was working correctly on my computer, I sent the code to my...

You are right, after changing the stencil function to increment and decrement as you described it works correctly.

Thanks again!

Thank you for the help, I appreciate it. Here is an image of a case that works with my current approach, and a case that fails. The teeth are a little more complicated but hopefully this...

I am trying to show a cut away view of a model of a person's teeth and gums.

My approach was to slice it in half using a clipping plane and then cap it off with a stenciled polygon, but as I...

I understand a method of using the stencil buffer to cap a clipped convex shell. The process is to create a stencil by drawing the back facing polygons and then removing the forward facing polygons....