[1.12.2] Change brightness like night vision does

[Meldexun]

Does anyone know how to change the overall brightness? I want that to change it similar to the night vision potion. But just applying the night vision effect is no a solution, because i want that the game is brighter and darker and just a bit not just the fixed brighter of night vision.

It may also help if you just tell me how the night vision potion affects the brightness.

Thanks for any help.

Edited July 15, 2019 by Meldexun

[Cadiboo]

This sounds like the perfect use case for a shader

[Meldexun]

On 3/1/2019 at 12:53 AM, Cadiboo said:

This sounds like the perfect use case for a shader

How should i do this? Or where should i start looking because i never worked with shaders.