This is my first shader that makes lighting more realistic without significantly altering the game. Unfortunately, you can't change the settings yet. The goal is to provide something good but simple. I made this on my phone, and I'm not sure if it's compatible with older versions of Minecraft. Please report any bugs/incompatibilities in the comments. 

Features:

Face Lighting: Block faces turned towards the sun receive extra light, while faces not turned towards the sun remain dark. 

Face Lighting is present everywhere: Not only Blocks, Entities, and Clouds have this same Face Lighting system. 

Dark night: Nighttime lighting can become 50% dark. 

Deformation in the water: The waters now have small ripples!