Constant ul_next_sys::ULFontHinting_kFontHinting_Smooth

pub const ULFontHinting_kFontHinting_Smooth: ULFontHinting = 0;

Lighter hinting algorithm– glyphs are slightly fuzzier but better resemble their original shape. This is achieved by snapping glyphs to the pixel grid only vertically which better preserves inter-glyph spacing.