The original shader code is from Joyce aka. MinionsArt's Patreon under CC Attributions 4.0
I ported most of the code over to the project. Some of the variables had to be adjusted so the look of the scene could be replicated as close as possible.
Apart from the original code being from Joyce aka. MinionsArt, the changes I made are licensed under CC Attributions 4.0 as well under Patrick Exner aka. FlameLizard. You can link to either my GitHub profile or my Twitter profile