Efficient 2D graphics on GPU with a tiling atlas texture

Hello, we've put a video together explaining atlas textures and their benefits for 2D games (or 3D game UI). We start simple and then get into more advanced optimizations that are possible with the technique:

https://youtu.be/UFbffBIzEDc

We work in Nim so the library itself may not be something everyone can use, however it is open source so those working in other languages can learn how we're doing things and maybe apply some of the same ideas to your own projects.