
You can find my fork of FTGLES here.
You can get Gambit Scheme bindings for FTGLES from the ftgles-gambit project.
Dave Petrie ported FTGL to OpenGLES under the name FTGLES. I had problems using FTGLES, however, so I forked it. You can find my reasons for doing this in my blog post, and also instructions for installing and using FTGLES.
Of course, I couldn't give you this without any Scheme bindings. I wrote some minimal bindings for Gambit Scheme and you can find them in the ftgles-gambit project.