[GZDoom][pull request]Stereoscopic 3D in gzdoom

[Rachael]

Cinemas in my experience have moved to polarized 3D glasses or active shutters
https://en.wikipedia.org/wiki/Polarized_3D_system
https://en.wikipedia.org/wiki/Active_shutter_3D_system

I had a friend once who had a polarized television. I looked at it real close to see how it was actually done - turns out all it does is alternate the row order between left and right on each line. This is quite possible to do on GZDoom - but it would still require a specialized monitor to show it, and GZDoom would have to be aware when it is in Windowed mode whether its window starts on an odd or even line.

GZDoom also would not be able to show this at any non-native resolution on said monitor except in Windowed mode - where it would be expected the desktop itself is set to the monitor's native resolution.

[The Bright Side]

This is awesome, thanks so much for implementing this feature. I got myself a pair of anaglyph red/cyan glasses and right now, I'm seeing a shitload of crosstalk... But after reading up on it, that seems like it's hard to avoid until I find a pair of glasses that match the colour settings of my screen, and/or until I find the right colour settings to stop this madness. Will keep trying... Very much worth it!

[The Bright Side]

I'm wondering if any of you guys know if there's a significant difference between red/blue glasses and red/cyan glasses when it comes to red/cyan 3D? Today, I went on a tour throughout my town (Montreal), visiting around 15 stores that I thought might have anaglyph 3D glasses, and I was unable to find anything. It seems like any of that stuff is really hard to come by these days, unless you import from Hong Kong (I did order from there, but it'll be weeks until those packages arrive).

The only pair of glasses I have seem to be red/blue instead of red/cyan, and even when I twist and turn my screen's colour settings, they do virtually nothing in DOOM. It's almost as if I wasn't wearing them. The glasses could be simply crap, but I'm wondering if it's perhaps because the blue lens is really blue, and not so much cyan?

Have you considered adding a red/blue mode to GZ(3)Doom, in addition to red/cyan?

[Rachael]

Green phosphor already comes through the blue filter on anaglyph 3D glasses. That is why the split is red/cyan and not red/blue.

██████

You should be able to check using those blocks. Put your glasses up to your screen, and put the filtered lenses over the colors. You should notice that through the blue lens, red is nearly black, but the other two come through just fine. On the red filter, green may somewhat come through but barely - it should be nearly black, and blue should actually be black.

If it really bothers you though, enable the red/cyan mode and type this in the console:

Code: Select all

testcolor ff00ff 255

That will render everything except colored sectors magenta and desaturate them too since color information is now useless anyway without the green channel.

If that is really truly better, you'll have to submit a new feature request so that this can be done at the rendering level rather than modifying the level with a debug command.

[biospud]

I'm wondering if any of you guys know if there's a significant difference between red/blue glasses and red/cyan glasses when it comes to red/cyan 3D? Today, I went on a tour throughout my town (Montreal), visiting around 15 stores that I thought might have anaglyph 3D glasses, and I was unable to find anything. It seems like any of that stuff is really hard to come by these days, unless you import from Hong Kong (I did order from there, but it'll be weeks until those packages arrive).

The only pair of glasses I have seem to be red/blue instead of red/cyan, and even when I twist and turn my screen's colour settings, they do virtually nothing in DOOM. It's almost as if I wasn't wearing them. The glasses could be simply crap, but I'm wondering if it's perhaps because the blue lens is really blue, and not so much cyan?

Have you considered adding a red/blue mode to GZ(3)Doom, in addition to red/cyan?

Red/blue glasses should work just as well as red/cyan glasses: with maybe slightly worse color fidelity but slightly reduced stereo crosstalk. But it does take some getting used to. I have not seen anaglyph glasses in a physical store in ages; I usually get them by mail order. I usually mail pairs of paper glasses to folks who send me a friendly private message asking for them.

I should really hurry up and implement a mode for nvidia 3D vision glasses. For folks who are able to use the appropriate monitor, windows computer, and electronic glasses, the experience in a hundred times better than those anaglyph modes give.

[The Bright Side]

Wow, thanks so much for your responses, guys. I will tinker around with this some more. I have the glasses at the office with me today and just did the re/green/blue test you posted, and the glasses seem to do a decent job at it.