BlendingDstFactor:
    | typeof ZeroFactor
    | typeof OneFactor
    | typeof SrcColorFactor
    | typeof OneMinusSrcColorFactor
    | typeof SrcAlphaFactor
    | typeof OneMinusSrcAlphaFactor
    | typeof DstAlphaFactor
    | typeof OneMinusDstAlphaFactor
    | typeof DstColorFactor
    | typeof OneMinusDstColorFactor
    | typeof ConstantColorFactor
    | typeof OneMinusConstantColorFactor
    | typeof ConstantAlphaFactor
    | typeof OneMinusConstantAlphaFactor