scale x11 apps for primary display

[skewballfox]

Tried looking into this a bit. This is related to this comment on the cosmic-epoch tracking issue for steam

a bit of context:

• 2560x1440 vertical monitor starting at position (0,0), leftmost
• 1920x1080 starting at postion (1440,444), primary display

It seems as though x11 windows are scaled for the width of vertical monitor. Most of the functions for x11 I'm seeing seem to assume the output is at position (0,0). The only place I see the display number referenced in cosmic-comp is when inserting the source.

Is the issue that primary display isn't passed, or is it something else? If I have a better idea of what the exact issue is I can try to fix it myself.