Add bool to allow fixing subpixel offsets

See: https://github.com/mpv-player/mpv/issues/11948

added enhancement good first issue renderer labels

changed milestone to %v6.323+

mentioned in commit haasn/libplacebo@407aadb4

mentioned in merge request !582 (merged)

mentioned in commit haasn/libplacebo@4f2c19c8

closed with commit 4f2c19c8

closed with merge request !582 (merged)