Shows how to render a scene in anaglyph 3D (aka red-cyan glasses).

Basically, you render the scene twice: Once for the left eye, once for the right. For each render you move the camera a bit to the corresponding side and shift the viewport, too - and in the end you combine the two images so that the red channel comes from the left one and the green/blue channels come from the right.

This is an excerpt from https://www.pouet.net/prod.php?which=92435 by darya (fraumimimi) and me with music by Virgill.

Have fun, and make a demo for next Deadline :)