Wrong window size after requesting win:size in looking-glass-client

[hepp3n]

Hey,

I'm using looking glass for my output in kvm. The client has argument we can pass, to requesting specific window size when floating. Basically we need to pass a win:size=WxH argument to client and it will open in desired size.

In cosmic-comp it does not works, or partially? I'm not sure. For 1080p resolution in windows guest and looking-glass we get proper size and I can see it because screen does not have black bars (LG client keeping aspect ratio). But when I set 2560x1600 resolution in windows, and ask for this window size, I got black bars.

My monitor has 3840x2160 resolution which is set in cosmic-settings. Also I don't use any scaling so it's set to 100%.

There is a log file from WAYLAND_DEBUG=1

cosmic-comp-debug.txt

[hepp3n]

Ok, so I checked the screenshot size quickly. For attached image from looking-glass. It has this resolution: 2560×1336 so it's definitely not requested one. I did notice it before, it has wrong height, when width looks ok.

And the size I was requesting was:
looking-glass-client win:size=2560x1800

[hepp3n]

I can say, gamescope windows in windowed or borderless, starting with similar issue.