Maybe this would be a good start! https://github.com/ssloy/tinyrenderer https://github.com/ssloy/tinyrenderer It covers how graphics libraries like OpenGL go f

Maybe this would be a good start! https://github.com/ssloy/tinyrenderer https://github.com/ssloy/tinyrenderer It covers how graphics libraries like OpenGL go from triangles to screen coordinates, and how they "shade" pixels in those triangles to create an image.