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[William Broom]

Instead of one eye being blue and the other red, both eyes are red and the other player has both eyes blue. Then, things drawn in blue will be invisible to player 2 and things drawn in red will be invisible to player 1. It would be some kind of stealth game, most likely, where each player has to out-sneak his opponent.

Am I making sense here?

[Melly]

Yes, in fact, and it's a really interesting eye-soreing idea. o.o

[moi]

Should replace the ole "cardboard" technology very efficiently 

[Cymon]

Problem is if the screen colors are off then a ghost of the other image appears.

Still, it's an intriguing idea, tho I'd recommend a setting that accounted for the mono-chromatic vision of the player. Perhaps vampires vs werewolves or robots. Ooh, got it, zombie vs human.

What sort of processing power would it take to render two separate screens in gray scale, then splice them together. What filter would you use? Multiplication? This idea actually bears some exploration.

Would it be possible to have a third player in? Would a green filter work since we're filtering light?

[Annabelle Kennedy]

Instead of one eye being blue and the other red, both eyes are red and the other player has both eyes blue. Then, things drawn in blue will be invisible to player 2 and things drawn in red will be invisible to player 1. It would be some kind of stealth game, most likely, where each player has to out-sneak his opponent.

Am I making sense here?

haha ahaha thats really cool!

i think thats clever.

[Klaim]

Really clever and interesting idea! 

[Zaknafein]

That sounds similar to DLP DualView technology, but with red/green filters...

http://www.slashgear.com/ces-2008-ultimate-gaming-experience-with-dlp-dualview-technology-109578.php

[moi]

For it to work, the background would need to be all black though.

[increpare]

For it to work, the background would need to be all black though.

Why?

[moi]

well, if you display a blue characfter on a white background,and if you have glasses that don't let you see blue, you won't see the blue character but you'll see the "hole" of the character through the white background. (i.e the area will be less white than the rest)
Won't happen on black.

[increpare]

well, if you display a blue characfter on a white background,and if you have glasses that don't let you see blue, you won't see the blue character but you'll see the "hole" of the character through the white background. (i.e the area will be less white than the rest)
Won't happen on black.

Oh okay.  I get you, I think. 

[moi]

But on second thought, maybe I'm wrong. lol.Not sure.

[William Broom]

I think you're right, except that the background should be white rather than black. I've seen it done, kind of, in a comic book: The League of Extraordinary Gentlemen: Black Dossier. In that, they use normal 3D goggles, but there is this one incredibly awesome bit where there are like... portals to other dimensions, and they just look like scribbly noise at first. But they're actually two pictures, one red and one blue, drawn over each other. So when you close one eye, one picture emerges, and when you close the other eye, you get the other one. Effin genius. And in that, the background was white. So I think white should work.

[Lucaz]

Maybe with a combination of colors and textures the characters would be hard to notice, specially if the game has a good amount of movement. That way you could put background and stuff.

[TheMeatyBall]

Awsome idea man!
But for it to work, don't you need to have the exact same color on the monitor, as the one your glasses have?
That can be hard if you don't know what RBG/hexadecimal(or what ever they use) your glasses have.

[muku]

The idea is great, if perhaps not too practical.

In fact you could use any background you like, even arbitrary textures etc. You just need to render your characters so that they only affect one color channel. I think OpenGL even has bitmasks for each individual color channel, so it would be easy to do.

EDIT: http://opengl.org/documentation/specs/man_pages/hardcopy/GL/html/gl/colormask.html

[Cymon]

well, if you display a blue character on a white background,and if you have glasses that don't let you see blue, you won't see the blue character but you'll see the "hole" of the character through the white background. (i.e the area will be less white than the rest)
Won't happen on black.

It works just fine in 3d magazines to have a white background.

truth is I've got to try it to see if it works.

That sounds similar to DLP DualView technology, but with red/green filters...

http://www.slashgear.com/ces-2008-ultimate-gaming-experience-with-dlp-dualview-technology-109578.php

Except that's shutter glasses (which have been known to give me headaches) and this is color filters.

[muku]

well, if you display a blue character on a white background,and if you have glasses that don't let you see blue, you won't see the blue character but you'll see the "hole" of the character through the white background. (i.e the area will be less white than the rest)
Won't happen on black.

It works just fine in 3d magazines to have a white background.

truth is I've got to try it to see if it works.

In theory it's easy. A white background is RGB=(1,1,1), and viewing it through blue glasses basically means the blue component is filtered out, so you'd only perceive the channels RG=(1,1). So to make a sprite that the player with blue glasses can't see, you can choose any color RGB=(1,1,x) with x<1. The greatest contrast is achieved by using RGB=(1,1,0), i.e. "white minus blue" or yellow. Other players would see a darker spot where you use this color, while the "blue" player shouldn't notice the difference.

On the other hand, if you use a black background, RGB=(0,0,0), you'd have to use a blue sprite RGB=(0,0,1) for it to be invisible to the "blue" player.

That's my theory at least. Depends on the glasses perfectly matching the hue of the computer's blue, which is probably unlikely. But maybe it would be good enough.

[increpare]

That's my theory at least. Depends on the glasses perfectly matching the hue of the computer's blue, which is probably unlikely. But maybe it would be good enough.

Especially if you compensated for possibly ghosty-effects with some random noise of a compensatory variety.

[muku]

Good idea. I'm actually itching to try this out now, but.... time. Sigh.