(Wine-Wayland) Triple Monitor support

[pollux78]

Feature Request

Triple monitor support under wine wayland.

I confirm:

• [ ✅] that I haven't found another request for this feature.
• [ ✅] that I have checked whether there are updates for my system available that
  contain this feature already.

Description

One of the missing features that a group of gamers like to do in sim racing is triple monitor setups, making the cockpit of the car expand across the screen, making a more immersive experience when driving instead of being on 1 screen.

I feel like this will be a issue that sim racing communities will bring up as a problem as its not as easy on windows.

In games like Assetto Corsa competizione there is a triple monitor option but it does nothing when its applied.

I have zero clue if wayland can even do this or the wine wayland driver aswell.

References [optional]

I know gamescope can technically do this if you do some math with the monitors in the launch command then stretch it across the screen, then remove the window title bar but its sketch and convoluted to do for a new user trying to do this.

[BananaWorks07]

I don't see why it wouldn't work unless the game is programmed in a stupid way (somehow very typical of game devs lol) and tries to stretch a single fullscreen window across 3 screens, in which case it is likely not possible to implement (maybe we can do an emulation of 3 separate windows that map to a single window contents, which I have done before when I modified gamescope for this, but such emulation doesn't belong here).

[pollux78]

I don't see why it wouldn't work unless the game is programmed in a stupid way (somehow very typical of game devs lol) and tries to stretch a single fullscreen window across 3 screens, in which case it is likely not possible to implement (maybe we can do an emulation of 3 separate windows that map to a single window contents, which I have done before when I modified gamescope for this, but such emulation doesn't belong here).

I think most games will stretch then its up to the user to configure the camera in the car to line up well with the monitors.

I'll provide a log just in case aswell

steam-805550.zip

Question why wouldn't it be possible? if the user has 3 of the same monitor resolutions wouldn't it be possible? but i'm guessing it wouldn't be a good implementation and so there could be bugs or something else? Thanks for explaining tho

[BananaWorks07]

I don't see why it wouldn't work unless the game is programmed in a stupid way (somehow very typical of game devs lol) and tries to stretch a single fullscreen window across 3 screens, in which case it is likely not possible to implement (maybe we can do an emulation of 3 separate windows that map to a single window contents, which I have done before when I modified gamescope for this, but such emulation doesn't belong here).

I think most games will stretch then its up to the user to configure the camera in the car to line up well with the monitors.

I'll provide a log just in case aswell

steam-805550.zip

Question why wouldn't it be possible? if the user has 3 of the same monitor resolutions wouldn't it be possible? but i'm guessing it wouldn't be a good implementation and so there could be bugs or something else? Thanks for explaining tho

Upon reading the code again, it should already be "working" (I had assumed the same size restrictions that applied to maximized states appllied to fullscreen states but only if the window size > output size. Also, in theory, a compositor could just do super sampling or something if we give a window size that's bigger than a single output and that would still be within wayland spec), but the game just appears to create 2 windows (one that is the regular size) and then the other one that is created with the 3 monitor dimensions and then it does nothing with it

[pollux78]

Actually this might need more tinkering in the game to get triple monitor to work as users have stated but I just didn't think that would be required(you would think triple monitor button would do triple monitor, guess not O_O) or you need to utilize windows software like nvidia surround which is out of the question anyways.