Construct the blend mode given the factors and equation.
Construct the blend mode given the factors and equation.
Enumeration of the blending equations
Enumeration of the blending factors.
Add source to dest.
Blend source and dest according to dest alpha.
Multiply source and dest.
Overwrite dest with source.
Destination blending factor for the alpha channel.
Blending equation for the alpha channel.
Source blending factor for the alpha channel.
Destination blending factor for the color channels.
Blending equation for the color channels.
Source blending factor for the color channels.