credit : http://www.wsgf.org/dr/darksiders
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1. download HexEditor [
link]
2.open Calculator -> View -> Programmer
3. select "Dec" -> input your eyefinity screen's width
support your eyefinity width = 6048
4. then select "Hex", it will change 6048 to hex value = 17A0
5. use HexEditor open file
"C:Users
AppDataLocalDarksidersoptions.dopt"
Tip: start -> Run -> type " %localAppdata%Darksiders" -> enter
6. change hex value position from AABB to BBAA
from 17 A0 change to A0 17
7. add value to options.dopt in the position as below