Function sdl2::gfx::imagefilter::clip_to_range

pub fn clip_to_range(
    src1: CVec<u8>, 
    tmin: u8, 
    tmax: u8
) -> Result<CVec<u8>, String>

Filter using ClipToRange: D = (S >= Tmin) & (S <= Tmax) S:Tmin | Tmax.