In the “improvements” page here, there is listed “Anaglyph stereo rendering (for viewing with 3D glasses)”. I wondered if anyone knows how to turn this on, if it’s maybe a cvar? I’m using Vorpx atm and it doesn’t like Quake III.
Yeah, it’s a cvar r_anaglyphMode 1 for red-cyan. It may work better with r_greyscale 1. Note both of these do not currently work correctly in the default opengl2 renderer, so you would need to use cl_renderer opengl1 as well.
You can open the in-game Quake 3 console by pressing shift+escape and paste the below commands and press enter to enable anaglyph stereo 3D.
cl_renderer opengl1; r_anaglyphMode 1; r_greyscale 1; vid_restart
You can switch back to the defaults with:
cl_renderer opengl2; r_anaglyphMode 0; r_greyscale 0; vid_restart
Quote from ioq3 README.md:
r_anaglyphMode
Enable rendering of anaglyph images
red-cyan glasses: 1
red-blue: 2
red-green: 3
green-magenta: 4
To swap the colors for left and right eye
just add 4 to the value for the wanted
color combination. For red-blue and
red-green you probably want to enable
r_greyscale
r_greyscale is fractional. It’s possible to use r_greyscale 0.5, etc to mix some color in.
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