Posted by Wade Walker on May 21, 2011; 6:58pm
URL: https://forum.jogamp.org/how-do-i-tint-the-screen-tp2965935p2969706.html

I can think of a few ways

1. Make your lights red.
2. Use OpenGL fog, colored red.
3. Put a translucent red polygon right in front of your camera, so you're looking through it. This may cause drawing order problems, though, depending on what's in your scene.
4. Render to a buffer, then process the buffer's pixels to redden it (e.g. multiply each pixel RGB value by (1.5, 1, 1) and clamp to 1).