MTLBlendFactor.unspecialized
Defers assigning the blend factor.
Declaration
case unspecializedDiscussion
Until you specialize this value in the pipeline state, it:
behaves as
MTLBlendFactorOneforsourceRGBBlendFactorandsourceAlphaBlendFactorbehaves as
MTLBlendFactorZerofordestinationRGBBlendFactoranddestinationAlphaBlendFactor