Here you have a slightly improved first version. I fixed a few bugs, but it's still not what you would expect, but at least it works properly as it should. The only problem I can't solve is the zoom option.
Remember that I'm not a professional, I try my best to. Those people who are looking for this Shader are simply At least temporarily satisfied with this version.
https://drive.google.com/file/d/1pFMDVUoNJtIRzuosXetfcIvlO5gE1wWD/view?usp=sharing
Have a nice day
===From===
HitmanxPompa