Eyefinity NOT extended desktops

dugdiamond

New member
i have found that many people are still trying to distinguish between games/apps that are true Eyefinity and others that have an expanded field of view over extended desktops

to demonstrate the difference i have found two videos of the same game (hawx)

in the first video we are looking at the outer screens while the plane pulls a hi-G loop... notice how the straight lines are bent, and how the angle of bendness changes through the loop:

[media]http://www.youtube.com/watch?v=pHNxUR_nh3k[/media]

in the second we again are looking at the out screens, but when barrel rolls are made... same again. we are looking for straight lines, and how they are transversed across the displays:

[media]http://www.youtube.com/watch?v=MmeyX7-_jxM[/media]

notice how the outer screens in the eyefinity array have a different perspective that the center one - this would not happen on a extended desktop.

think of an extended desktop as being similar to looking through a longer letterbox than a normal-sized one...
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and on the other, eyefinity works like this...

try this little experiment:

  • sit/stand up straight
  • hold up both hands, open-handed and place them about 12inches away from head
  • keep looking straight forward until told otherwise
  • move you left hand anticlockwise (keeping the same distance) until your thumb just starts to go out of view
  • move you right hand clockwise (keeping the same distance) until your thumb just starts to go out of view
  • now, trying to keep your hands in the same place, move your head forwards and backwards (notice you hands disappearing out of view, by just moving your eyes in their direction)
  • next, as you are moving your head back and forth, turn you head slightly to look at each hand in turn.

this experiment shows that our peripheral vision is arched, NOT planar and certainly not fisheyed.

just because the extended display options in amd's CCC are in the same place as the setup for eyefinity mode - does not mean that the game/app, you are about to use, miraculously adapts... the eyefinity feature has to be written into a game/app... they are only a few games/apps that use this (hawx being one of them, and F1 2010 being another)

there is a list available from amd, with games that support eyefinity here. please note, that "support for" and "uses" are two different things.

to prove this please watch some clips from a review on here... even though the games are played in an eyefinity setup (and they are "supported") the gameplay is still planar (or fisheyed).

here again is eyefinity at work in F1 2010. in this video, look for repeating models as the racecar goes around corners...

[media]http://www.youtube.com/watch?v=I8UaX6bq5fY[/media]
 
Great explanation. I think this really shows the difference and will hopefully clear up misunderstandings. Eyefinity is more than simply stitching displays together. Do you know if nVidia surround is similar?
 
Great explanation. I think this really shows the difference and will hopefully clear up misunderstandings. Eyefinity is more than simply stitching displays together. Do you know if nVidia surround is similar?

nVidia's approach is exactly the same... the directX standards must be the same for general compatibility
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Do you have an eyefinity setup Dug? If so, I am trying to figure out when your not in a game, how does it display your desktop, is the start button all the way to the left, or can you choose where it is?
 
eyefinity only works in games

while doing other stuff, your monitors will just be extended desktops, and you can choose which screen will be you main desktop working area.

as you then open(run) apps, their windows can be dragged onto the other screens.
 
Thanks a lot. Every other place I have looks shows them as one big long monitor, which didn't appeal to me at all. Game play on it looks great though.
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Not exactly the same as the taskbar is stretched across both screens and windows/dialogue boxes open in the middle of both screens.
 
Not exactly the same as the taskbar is stretched across both screens and windows/dialogue boxes open in the middle of both screens.

okay guys... think about this carefully....

if you arrange them wisely you can get the clock in the center (main screen) - by swapping the middle and right monitors around for desktop working, and then swapping them back for gaming.. it's a 10sec job
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arrange the desktop as such...

2 - 1 - 3

1 being you main work screen in CCC

then swap the cables of 3 and 1 around and make 3 the primary

you will just have to remember that dragging desktop windows between 3 and 1 will be reversed
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