I want to create a lighting system in 3/4 view, as well as with a map of normals and heights. But my level in Open GL is enough only for working with colors and textures. And lighting systems like "fast light" and "light system 2d" are not suitable, because they are either for the platformer or for the top down game. It would help me a lot if you could help me understand the basic principles of lighting. I know how the "fast light" lighting system works and modified it in every way, but what to do in my situation, I have no idea what to do and would be glad if you briefly explained or threw links to resources (but I searched the entire Internet, I found only videos and screenshots of the finished version of the lighting system that I need, but not instructions) <sorry for my english>