Film Grain Post Process Shader - Godot 4 Tutorial
Example repository
https://github.com/standycore/film-grain
Shader and advanced post processing documentation
https://docs.godotengine.org/en/stabl...
https://docs.godotengine.org/en/stabl...
Hash function source (probably) (I forgot)
https://thebookofshaders.com/10/
Saturation, contrast, and brightness sources
http://www.davetech.co.uk/shaderdesat...
https://stackoverflow.com/questions/9...
Noise functions are from The Book of Shaders
https://thebookofshaders.com/11/
https://thebookofshaders.com/edit.php...