Indeed his videos are amazing . My recommendation though would be to start with the "beginner" video -- which is completely 2D but at least gets some ideas across. Then watch [link] which isn't his but introduces how you get 3D out of fragment shaders. Finally just drink from the firehose -- ▶ this video is fantastic, yes it's five hours but worth it. (Definitely come into that familiar with the idea of raymarching though... the first few minutes start off super basic but it goes to eleven real quick.)
in “Source code for 4kb demoscene production “Elevated” released (2016)” · View on HN