Only titlebar of window is shown on monitor with negative offset

[adee]

Sway Version: sway version 1.2-c3353bb2 (Jan 14 2020, branch 'master')
swaymsg -t get_outputs:
Output eDP-1 'Chimei Innolux Corporation 0x15E8 0x00000000' (focused)
Current mode: 1920x1080 @ 60.007999 Hz
Position: 0,0
Output DP-1 'Dell Inc. DELL U2414H 292K47580FWL'
Current mode: 1920x1080 @ 60.000000 Hz
Position: 0,-1080

If a window is positioned to a monitor with negative offset, windows with titlebar only show the title part. If I reconfigure the layout to use positive offsets/open on the primary everything is ok.
Please witness the attached screenshot.

To reproduce:

• Open any window with a config that shows titlebars on the monitor with negative offset. I tried virt-manager.
  or:
• drag a floating window to the secondary. The window part disappears when it reaches the secondary.

With default configuration the entire virt-manager main window is invisible (except the titlebar). My config omits titlebars for tiled windows.

Screenshot: https://imgur.com/li52zF2

[vijfhoek]

I don't have this problem on sway version 1.2 (from the Arch Linux repos, package version 1:1.2-5).

My outputs:

Output eDP-1 'Unknown 0x06D7 0x00000000' (focused)
  Current mode: 3840x2160 @ 59.997002 Hz
  Position: 0,0
  Scale factor: 2.000000

Output HDMI-A-2 'Philips Consumer Electronics Company PHL 243V7 0x000034F5'
  Current mode: 1920x1080 @ 74.973000 Hz
  Position: 960,-1080
  Scale factor: 1.000000

Output DP-1 'Philips Consumer Electronics Company PHL 243V7 0x000034F4'
  Current mode: 1920x1080 @ 74.973000 Hz
  Position: -960,-1080
  Scale factor: 1.000000

[adee]

I don't have this problem on sway version 1.2 (from the Arch Linux repos, package version 1:1.2-5).

My outputs:

Output eDP-1 'Unknown 0x06D7 0x00000000' (focused)
  Current mode: 3840x2160 @ 59.997002 Hz
  Position: 0,0
  Scale factor: 2.000000

Output HDMI-A-2 'Philips Consumer Electronics Company PHL 243V7 0x000034F5'
  Current mode: 1920x1080 @ 74.973000 Hz
  Position: 960,-1080
  Scale factor: 1.000000

Output DP-1 'Philips Consumer Electronics Company PHL 243V7 0x000034F4'
  Current mode: 1920x1080 @ 74.973000 Hz
  Position: -960,-1080
  Scale factor: 1.000000

Please note the fact that you're using the last stable release while I use the git master. This problem is relatively recent even in that (1-2 months old maybe?). I just noticed it now.

[purew]

Can confirm this bug.

output "DP-1" {
    pos 1920 0
    background $background2 fill
}

works fine.

output "DP-1" {
    pos 1920 -400
    background $background2 fill
}

shows only titlebar on that second monitor.

On wlroot:062583ed and sway:c3353bb2 and this is a regression. The packaged 1.2 version in arch does not have this problem.

[adee]

The culprit is 79c5f5b. Reverting that makes this go away.

[emersion]

cc @pedrocr

[pedrocr]

That commit can be reverted without affecting anything else. Nothing depended on that and no behavior was supposed to change. It was a change towards correctness that as far as I could tell didn't exhibit bad behaviors. Since there is at least this bug I'd say reverting is the prudent choice given the release cycle.

After 1.3 is released a more thorough patch that fixes all situations of implicit casts may be the only way to be sure there are no other bugs.