Fog broken between Dec 25th build and latest

[Nash]

This is a test map with fog, FogDensity, deep water with fullscreen blend, and the skybox sector is desaturated.

In gzdoom-g2.1.pre-1436-gc8810db, all looks fine. Always looked this way for as long as I can remember.

In gzdoom-g2.1.pre-1523-gbb355b3, the player's hand is desaturated when it shouldn't be! Also the water blend does not appear anymore.

Example file: https://www.dropbox.com/s/3kj5coae1uo0x ... y.pk3?dl=0

[Graf Zahl]

Looks like the Stereo3D code got the scene postprocessing messed up.

Fixed.