The idea behind this is to use fractional scaling to make it appear as if the Wine environment is running at the user-specified DPI in winecfg while keeping the windows looking crisp. This enables users to have different fractional scales per display under wine without causing blur. This matches the behavior under XWayland and is actually better than the XWayland behavior when using multiple displays with different fractional scales. FWIW: Mutter has a bug with its implementation of fractional scaling that has been recently fixed in case this compositor is being used to try this implementation: <https://gitlab.gnome.org/GNOME/mutter/-/work_items/4834> -- v5: winewayland: Implement fractional scaling protocol. https://gitlab.winehq.org/wine/wine/-/merge_requests/11101