Copyright 2010-2015 Michel Poulin

Last Update: February 2014



3 LCDs Support for FSX Eyefinity Surround Viewing

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Home Made Triple Displays Support (Hard Wood 3-1/2 x )

Can be used for 23 and 24 inches LCD Wide (16:9)



3 Commercial VESA Bracket installed (Wall part shown)



LCD Displays installed and secured using LCD bracket part

Commercial VESA Bracket (Both parts mated together)

Eyefinity Surround View (5760 x 1080 resolution)





Field of View Calculation

Human horizontal field of view is almost 180 degrees. During real flight, this is a useful cue for speed perception on ground and aircraft height estimate from ground during landing. It is also helpful during approach in order to have airport in visual. For virtual flight, a wide viewing angle provides the same advantages. However, it is not possible to reproduce a field of view up to 180 degrees with FSX by using only three displays. Since FSX provides about 116 degrees, this is the field of view we will try to reproduce with 3 displays.


This calculation assumes that all three LCD displays are physically identical and have the same screen pixel pitch and have the same resolution.

The bezels located within the inner surround displays are part of the field of view while both outer bezels are excluded from the field of view.

The inner bezels are considered as an obstruction inside the field of view made by the surround displays when compensated with the graphic card (See below how to use NVIDIA driver for bezels calibration)


D is the viewing distance between your head position (Eye point) and the middle of the central LCD surface. In the best word, this distance should be the same with the sides LCD surface

Wh is the horizontal width of your central LCD active display.

Wb is the bezel width.

FOVi is the optimum field of View provided by the inner displays. It includes both side bezels

FOVo is the optimum field of View provided by the two side displays. Only the inner bezel per side is computed

FOV is the total field of view obtained with all three displays.


Using trigonometry, we can calculate the angle formed by D and the half display width (Wh + 2Wb) /2 at right angle with the following formula.


Arc tang = Display Width / 2D = (Wh + 2Wb) /2D


From my platform design, the distance D corresponds to 30 inches and my LCD displays are 21.5 inches wide. So FOVi = 19.714 degrees


Arc tang = Display Width / 2D = (Wh + Wb) / 2D


My LCD displays have 20.0 inches active display and 0.75 inch bezel width. So FOVo = 18.435 degrees


FOV is the summation of 4 inner triangles and two outer triangles, So FOV = 4FOVi + 2 FOVo = 115.73 degrees





Practical Field of View Calculation

Since the viewing distance and room space are often the major limitation, the surround support most be built with different angle than calculated above.

Because of my room dimension and motion platform height (closed to ceiling), the LCD displays had to be limited to 23 inches Wide (16:9)

The viewing distance on my platform is fixed and corresponds to 30 degrees.




180 Viewing Angle with FSX

In order to avoid image distortion with 180 viewing angle, a minimum of 5 LCD display with 45 degrees between them is recommended.

Two FSX running in synchronization with two separate PC. Each FSX having shifted vew.




FSX Configuration for wide viewing angle



In order to avoid stretch scenery when using a highest horizontal resolution, you need to configure FSX for wide view.

To do so, you need to edit the FSX configuration file using Notepad editor. The FSX Config file is called fsx.cfg and is located in C:/Users/[username]/AppData/Roaming/Microsoft/FSX/ in Windows 7 or 8.

Search for header [Display] within the file and modify the string below has indicated in blue :











FSX Aircraft Panel Configuration



Flickering mouse pointer may occur when selecting any aircraft panel from Title Menu and detaching them on your multi displays. Furthermore, this decreases the frame rate performance.

I used to get that problem all the time if trying to open the main instrument panel 2D view from any aircraft with large horizontal display resolution like triple display configuration, this problem is related with the size of the instrument panel in the panel.cfg file.

After some FSX files manipulation with the panel.cfg file, you can get rid of this problem. You can set it so it fits a 4th and 5th monitor display perfectly without flickering mouse pointer.


Here below is the basic procedure explained. For more details or possibilities refer to this Microsoft MSDN link.


1-      First, find the panel.cfg file in Windows 7/8 for you chosen aircraft in the following path: C:Program Files/Microsoft Games/Microsoft Flight Simulator X/SimObjects/Airplanes/chosen_Aircraft/panel.cfg.

2-      Copy and paste the file on your desktop.

3-      Make an extra copy of it in your desktop and Rename it panel_old.cfg.

4-      Open and edit the first copied panel.cfg.

5-      Find the cockpit panel, usually the main panel [Window00] and proceed with modification as shown below.

6-      Save the file opened in 4.

7-      Copy/Cut back both panel.cfg and panel_old.cfg from desktop to C:Program Files/Microsoft Games/Microsoft Flight Simulator X/SimObjects/Airplanes/chosen_Aircraft/.

8-      Repeat steps 1 to 7 for every aircraft in FSX.

9-      While running FSX first time with modified detached panel, grab the panel window edge with the mouse and shape the subpanel window to your required size and position, then save this flight.

10-  For future flight, open the saved flight (You may change airport if required). The saved sized & position panels will come up as before without flickering mouse pointer.






















Final Result


I needed to add side stabilisators in order to increase the support rigidity specifically for the yaw movement because the middle H beam fixing point was not sufficient.

The stabilisators (black sides) enhance the cockpit by adding wall finish.




The FSX scenary viewing angle shown below is greather than my physical viewing angle (116 degrees). This can be modified with the ZOOM factor.

With FSX, the zoom factor can be adjusted by pressing <BackSpace> key and then sign key or +. I have not found any parameter within fsx.cfg for this.

If someone knows, please let me know, I will be happy.





Using NVIDIA driver to configure the 6 LCD used with FSX



My simulator use 2 LCD to display the cockpit instruments, 1 LCD for simulator environment software (auxiliary ) and 3 LCD for surround scenery viewing.

As shown below, the PC needs 2 graphic cards to feed the 6 LCD display. One graphic card, PCIE 1X, GE Force 8400GS drives the two VGA LCD displays. No graphic performance is required for those LCDs.

A second graphic card, PCIE 16X, GE Force GTX760 drives four DVID LCD displays. This card need performance since the FSX Frame Rate must refresh a resolution of 5760 x 1080.


The ASUS GE Force GTX760 supports four outputs natively (three spanned as a single display device, with the fourth as an auxiliary).



Bezels Calibration with NVIDIA








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This YouTube link gives an idea of the eyefinity surround enhancement on flight simulation.

My own video will be linked here soon.