Constant radiant_rs::blendmodes::SUBTRACT

pub const SUBTRACT: BlendMode = BlendMode{color:
              BlendingFunction::Subtraction{source: LinearBlendingFactor::One,
                                            destination:
                                                LinearBlendingFactor::One,},
          alpha:
              BlendingFunction::Subtraction{source: LinearBlendingFactor::One,
                                            destination:
                                                LinearBlendingFactor::One,},
          constant_value: Color(0.0, 0.0, 0.0, 0.0),}

Subtracts source from destination.