I figured this is the best place to post this. If not, I apologize and you may delete it.
I'm trying to achieve 2560x1080 21:9 in ARMA 2 and ARMA 3. The resolution isn't a problem. With one of these displays, you can select the resolution in the video settings. There is a lack of a 21:9 setting in either games. You can set a Custom setting in one of the profile configs, but this is as far as I got:
Code:
Documents > ARMA 3 Alpha > yourprofilename.Arma3AlphaProfile
fovTop=0.75;
fovLeft=1.3333334;
Hopefully someone that is more knowledgeable on this than I am can sort this out. The solution could also be added to the detailed report for the ARMA 3 Alpha and ARMA 2 since they both handle this the exact same way.
UPDATE: I believe I have found the solution for gaming at 21:9 2560x1080 in ARMA 3.
Code:
fovTop=0.75;
fovLeft=1.7777778;
The first part is experimenting with fovTop. Then dividing the width of my monitor's resolution by the height and multiplying that number with whatever fovTop is. I tried values between 0.55 and 1.10. Ended up settling on the default 0.75. The best fovTop value may depend on the resolution height of your display.
2560 / 1080 = 2.37037037037037.
2.37037037037037 x 0.75 = 1.777777777777778.
The engine will automatically adjust the number or shorten it. This should work for any of the ARMA games. The trick is to experiment with the fovTop and find out which looks best to you on your display.
http://i.imgur.com/1h0hN3T.jpgHere's a screenshot showing the result.