and here I am, barely managing to find a decent, simple 3D C++ rendering library to run on a mac with XCode.

Edit: 3D

It's pretty crazy how weird it is that there's no dead simple 3D rendering library that supports just bare polygons. When I look at an opengl tutorial I just flee when I see how much boiler plate code is necessary to make the mouse move a camera.

I'd recommend bgfx (https://github.com/bkaradzic/bgfx), if you want something simple and cross platform. In many ways it reminds me of a 3D SFML.