When using multiscreens, how to specify a screen to a specific screen

Currently there are four screens on the desktop, each screen is 4K resolution, when exporting Unity executable in 12K, how to control the 12K screen executable file to the specified screen when clicking on the executable.

See this article:

And this thread:

Neginfinity’s reply above deals with the case of

  • Putting the unity executable on a single one of the monitors.
  • Unity project has 4 cameras with each to be targeted to a different one of the four displays

But if you simply want one Unity project to be displayed across all 4 screens as though it was one big screen, then I think you can just use the OS display manager, where you arrange your 4 screens and instruct the PC to use the 4 as a single screen. Never tried running a Unity Project at such a huge size though, so not sure if there any restrictions to achiving that, either in Unity, gpu drivers or even OS.

Alternatively there is dedicated software such as Resolume Arena that might be useful, though you’ll still have to perform one of the above methods to get your output in a compatible format, unless you simply want to stretch say a 4k image across all the screens.

Edit:
Didn’t see your other thread on the subject here and had assumed you were targeting a 2x2 grid of 4k monitors to make a bigger display for some event or installation. If you want Unity spread across all those monitors, then you can probably do it as above but i’m confused as to why or how you’d want the end result to appear.

If the image in the other post is simply for testing and the final project will be on say a 2x2 4k multi-display, then you need to get that hardware on site ( or take project to installation ) in order to accurately test.