There are two methods for setting up three monitors for iRacing: run the simulation in windowed mode or use a full-screen exclusive mode provided by your graphics card manufacturer, such as NVIDIA Surround or AMD Eyefinity. Both methods are outlined below.
With this method, you run the simulation in a window that spans all three monitors. You can run in a window with a title bar and resizeable borders (so you can drag and resize the window) or in a window with no borders to mimic a full-screen experience.
This is usually the easiest mode since it bypasses the need to configure NVIDIA Surround or AMD Eyefinity.
Full-Screen Exclusive Mode
With this method, you use the configuration tool with your graphics card to create one combined virtual display from your three physical displays. iRacing then uses that one combined display to render the simulation.
This is a true full-screen mode, which may be more desirable to some users. Be cautious, since when using this method, if anything should pop up on top of the sim window while racing, such as a notification, the simulator may revert to windowed mode, which may be a distraction while racing.
The “Monitors” menu contains settings you can use to refine your triple monitor setup further. You can open this menu from within the simulation. While exited from the vehicle, click “Options” in the upper right, then click the “Graphics” tab, and finally click “Monitors” in the top section.
The following assumes that all three of your monitors are of the same model, size, and resolution.
If you want to refine your triple monitor setup further, follow these steps.
Change “Monitor Type” to “3 Flat Screens” (or “3 Curved Screens”).
Be sure “Monitor Width” is accurate to your monitors. Measure edge-to-edge (not diagonally), including bezels.
In “Bezel Width,” enter the width of your monitors’ bezels (on a single edge, not combined).
In the “Field of View Calculator” section, input the viewing distance from your eyes to the center monitor, then click “Compute.” This should automatically set the ideal field of view based on all the above settings.
After completing the above steps, you may enable “Render scene using 3 projections”. Enabling this will cause the simulation to render each monitor using a separate camera, giving you more control over how the simulation renders across the three monitors and providing a more realistic view of the race track.
Enable “Render scene using 3 projections”.
If you have an NVIDIA graphics card, check “Enable SMP/MVP.” This will provide a performance enhancement.
In “Angle between center and side screens,” enter the angle, in degrees, where your center monitor meets your side monitors. Adjust your monitors so the angle is identical where both side monitors meet your middle monitor.
4. Finally, in the “Field of View Calculator” section, input the viewing distance from your eyes to the center monitor, then click “Compute.” This should automatically set the ideal field of view based on all the above settings.
Note that if “render scene using 3 projections” is not enabled, “Angle between center and side screens” will not affect how the simulation is rendered.
If Using Curved Monitors
If you use curved monitors, you will not see a setting called “Angle between center and side screens,” as described in step 3 above. Instead, you will see a setting called “Radius of curvature.” You should enter the radius of your three monitors in this field rather than an angle. Consult the materials that came with your curved monitors for the correct radius value.