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Ruudje

OpenGL Opengl on multiple monitors

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Can anyone point me to documentation or tutorials for using multiple (four) monitors with Opengl? So far I have been unable to find any info on this myself. Thanks in advance

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Whats your problem exactly? I use two monitors here and just create a window big enough (e.g. 2560x1024) to cover and it works flawlessly.

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I have to admit I haven't tried to build a prototype like that yet... :$

But here's the deal:

for a project I'm working on I need to modify the Torque Game Engine to use 4 displays. Three will be in front of the players (8-12 year old children) creating a wide view of the "world", and 1 will show what's underneith them (they are flying). I was under the impression that I have to select a display adapter to draw to, where one adapter = one monitor.

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Guest Anonymous Poster
Just make one large window, create a context over it. Then split the window up into four separate sections, there is a NeHe tutorial on this actually (splitting it into 4, not multiple monitors as that doesn't matter).

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Enrico,
have you tried that.
Because I think that doesn't work with OpenGL.
As ruudje said, you need to create a device context for every device.
To get the best performance, I think the best thing you could do is rendering your scene to an offscreen buffer and copying portions of the buffer to the different devices.

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Quote:
Original post by delta user
Enrico,
have you tried that.
Because I think that doesn't work with OpenGL.

Tried what?
It works great here with two monitors, but I am not sure how to handle four (and I don't need to. Better get a 30" thing ;) ). What graphics cards configuration do you have? Two Nvidia PCIe cards?

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Configuration can be adjusted to what we need. But basically I make Windows able to use 4 displays, and modify Torque to draw 4x, with different camera angles? I was under the impression that Torque (or: a game) will need to switch to a fullscreen exclusive mode for fast performance, but with a window width that is 4x larger then normal, there won't be any hardware supported resolutions for that. Any thoughts?

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