trivial-gamekit VS cl-opengl

If you insist on learning through game development -- and admittedly I learn best by just jumping in and doing something -- you should at least try making something simpler than a full 3D game first, like a roguelike: https://github.com/borodust/trivial-gamekit, https://borodust.org/projects/trivial-gamekit/.

For something simple, https://github.com/borodust/trivial-gamekit would do.

Playing with their 'trivial-gamekit' based on cl-bodge now, very nice I think!

https://borodust.org/projects/trivial-gamekit/

alien-works also looks cool and under active development

If all else fails, I recommend trying to contact author through creating an issue on github. If that fails too and you are too tired to continue that fight, have a look at trivial-gamekit (beware: shameful self-plug).

Learn Common Lisp and high-level 2D graphics using Sketch or trivial-gamekit. It's lispy, super fun and enjoyable way. Seriously. 2D graphics are easy to grasp and intuitive.

Use CL-SDL2 (https://github.com/lispgames/cl-sdl2) for simple 2d rendering. It's both GPU-accelerated and portable to many platforms. You can use CL-SDL2 along with CL-OPENGL (https://github.com/3b/cl-opengl) for OpenGL programming, provided you have knowledges about 2d/3d graphics programming.

Once you understand CFFI you can hop into OpenGL or Vulkan land. We have bindings for those: very mature and stable cl-opengl and partial cl-vulkan. Meaning, you will have easier time with OpenGL. Not only because of better bindings, but also OpenGL is much simpler than Vulkan, although still a mess.