Command-Tab disable while on fullscreen on MacOS?

1

Hey there, I’ve noticed that I can’t use the Command-Tab to switch windows while on Fullscreen on MacOS. Meanwhile, alt-tabbing works just fine on Linux and Windows.

Here is the code I’m using to set the game as fullscreen.

Device.PreferredBackBufferWidth = Width;
Device.PreferredBackBufferHeight = Height;
Device.IsFullScreen = FullScreen;
Device.ApplyChanges();

Is this a intentional behavior?

1 Like
2

That sounds like something SDL does… (we use SDL for window management on Mac/Linux) it might just be what SDL does.

If you set graphics.HardwareModeSwitch = false that might fix it, since you get a “soft” fullscreen.

1 Like
3

What version of MG are you using?

4

Thanks @dellis1972. I’ll try this as soon as I can.

5

I’m using the 3.6 version.

6

Setting graphics.HardwareModeSwitch = false works, I can switch windows using command-tab now, sadly, it breaks how my “resolution manager” works.
The code I’m using for resolution independence is a somewhat modified version of this:

http://blog.roboblob.com/2013/07/27/solving-resolution-independent-rendering-and-2d-camera-using-monogame/comment-page-1/

With an addition of this code to set the window’s height and width.

private static void ApplyResolutionSettings ()
{

#if DESKTOPGL
	OperatingSystem os = Environment.OSVersion;
	if(os.Platform == PlatformID.MacOSX)
		_Device.HardwareModeSwitch = false;

	if (os.Platform == PlatformID.Unix
	      & Directory.Exists ("/System")
	      & Directory.Exists ("/Users")
	      & Directory.Exists ("/Volumes")) 
		_Device.HardwareModeSwitch = false;
#endif

	// If we aren't using a full screen mode, the height and width of the window can
	// be set to anything equal to or smaller than the actual screen size.
	if (_FullScreen == false) {
		if ((ScreenWidth <= GraphicsAdapter.DefaultAdapter.CurrentDisplayMode.Width)
			&& (ScreenHeight <= GraphicsAdapter.DefaultAdapter.CurrentDisplayMode.Height)) {
				_Device.PreferredBackBufferWidth = ScreenWidth;
				_Device.PreferredBackBufferHeight = ScreenHeight;
				_Device.IsFullScreen = _FullScreen;
				_Device.ApplyChanges ();


		}
	} else {
		// If we are using full screen mode, we should check to make sure that the display
		// adapter can handle the video mode we are trying to set.  To do this, we will
		// iterate through the display modes supported by the adapter and check them against
		// the mode we want to set.
		foreach (DisplayMode dm in GraphicsAdapter.DefaultAdapter.SupportedDisplayModes) {
			// Check the width and height of each mode against the passed values
			if ((dm.Width == ScreenWidth) && (dm.Height == ScreenHeight)) {
				// The mode is supported, so set the buffer formats, apply changes and return
				_Device.PreferredBackBufferWidth = ScreenWidth;
				_Device.PreferredBackBufferHeight = ScreenHeight;
				_Device.IsFullScreen = _FullScreen;
				_Device.ApplyChanges ();
			}
		}
	}

	_dirtyMatrix = true;

	ScreenWidth = _Device.PreferredBackBufferWidth;
	ScreenHeight = _Device.PreferredBackBufferHeight;  
}

With alse _Device.HardwareModeSwitch = false, only works properly if the user sets the game resolution exactly as it own screen resolution.

It would be great if it were possible to use Command-Tab while HardwareModeSwitch were true.
So it is this an SDL2 bug?

1 Like
7

This will be down to how SDL works I’m afraid. It handles all the window management.
Device.HardwareModeSwitch = false effectively gives you a windowless fullscreen app using whatever the desktop resolution is,.
Device.HardwareModeSwitch = true, changes the hardware display mode.

8

I’ve noticed that my SDL2 version on MacOS still in version 2.0.0 while, on my linux port, it is on 2.0.5.
Maybe updating it could do the trick, can I simply override the file?