Rebase of wakira's wp_fractional_scale_v1 support #15965
Merged
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A rebase of earlier PR #15355 .
No changes added (except for one log). Discussion already happened under previous PR.
Introduce wp_fractional_scale_v1 protocol for proper fractional scaling under wayland.
For compositors supporting wp_fractional_scale_v1, RetroArch is now pixel-accurate when using a non-integer scale.
Tested using KDE 5.27.5