Before I get deep into opengl-tutorial.org, just wanted to check that it's relevant to Gem. The tutorial is openGL 3+ -- as that's over 10 years old, I assume Gem is up to it but it doesn't hurt to check.

hjh

Related question: Gem help patches related to vertices and shaders are looking for some "Toon" files. I assumed these would be in the same directory as the help patches, based on the presence of [open Toon.something( objects, but these files seem to have been removed from the repository. Are they somewhere else, or I have to download offer ones?

hjh