Set the game up for TripleHead as normal ... it is the same as for Widescreen but with TripleHead resolutions ...
IMPORTANT ... set the Aspect Ratio to 16:9 in the config file
(check the WS solution above)
No need to change the FOV as it is automatically corrected ...
To get Quake 4 to work with the game patched to v1.3+ ...
Download game000.7z
Rename it ... game000.pk4
Go to your ... q4base ... folder and delete the file ... gamex86.dll
Now ...replace your game000.pk4 in the ... q4base ... folder with my version.
That's it play the game with the correct Aspect Ratio ...
Always make backups before you change anything !!!
Alright, I've been working on DRs, making and tweaking them, and for the past day or two, I have been working on adjusting the Quake 4 HUD for TH, this tweak is by no means finished, but it's usable. In theory, the HUD, and menus, and all 2D elements can be adjusted to be centered in Triplehead, but this is much easier said than done.
The nice thing is, this mod, while specific to Quake 4, can be easily done with any other id Tech 4-based game, such as Doom 3, Prey, and possibly even Brink, in fact, Brink might be an easy fix, but as I do not own it, I can't try.
Anyhow, there is a screen shot in the additional in-game screenshots section, and an initial release in the attachments, it is customized for my resolution, 4320 x 900, unfortunately, I cannot test this for other resolutions, but I see no reason it wouldn't work, I have packaged it as a separate mod, you can install it by unzipping it to your Quake 4 root folder. It includes the Quake 4 TH AR Fix by Paddy, and a configuration file set for 4320 x 900, customize it as necessary using the instructions above.
q4thhud.7z
It's still a huge mess, the HUD isn't perfectly centered, and everything is very stretched still, in theory, everything could be perfect, but I am flying mostly blind here, as there are very few HUD mods for Q4 or D3. Anyone who wants to tweak this is welcome to, I don't care whether you credit me, but if you have any success, please post it for others to enjoy