EBlendFactor

enum EBlendFactor
{
    BF_Zero,
    BF_One,
    BF_SourceColor,
    BF_InverseSourceColor,
    BF_SourceAlpha,
    BF_InverseSourceAlpha,
    BF_DestAlpha,
    BF_InverseDestAlpha,
    BF_DestColor,
    BF_InverseDestColor,
    BF_ConstantBlendFactor,
    BF_InverseConstantBlendFactor,
    BF_Source1Color,
    BF_InverseSource1Color,
    BF_Source1Alpha,
    BF_InverseSource1Alpha,
    EBlendFactor_Num,
    EBlendFactor_NumBits             = 4,
}