Underwater effect in OpenGL looks sickening

I don't know about you all, but I absolutely can't play underwater in OpenGL because it makes me nauseous

In software it looks cute and pleasent. I like it:

But in OpenGL this effect looks completely different.

It looks like the scalar on the wiggle could be reduced a little bit in GL.

Strangely the code looks pretty flexible, despite the heat wave effect being a wave like this in Opengl.

also the code calls it "drunken vision"

mentioned in merge request !2381 (merged)

mentioned in commit 33a1776f

closed