Mask Operator
The Mask Operator lets you combine two textures with a mask.
Inputs
Three textures (from left to right: A, B, C)
Parameters
Mode
mix: Blends C and B with mask A.
add: Adds C to B with A acting as an alpha mask for B.
sub: Substracts C from B with A acting as an alpha mask for B.
mul: Multiplies C and B with A acting as an alpha mask for B.