Can someone pleeease explain the difference between opacity and alpha (Of and Af in vops) to me?! Surely they are the same thing. I read the help and I don't understand the explanation!

pip31
Can someone pleeease explain the difference between opacity and alpha (Of and Af in vops) to me?! Surely they are the same thing. I read the help and I don't understand the explanation!

“Opacity” - think the real thing, that is how opaque the object is (how much of light transmits through it).
“Alpha” - think artificial thing: black and white image saved as a mask inside the image, which describes transparency of it. The latter one is computed from former one, but can be overwritten with Af variable in shader.

So opacity is how transparent my object will appear in rgb, and alpha is stuffing a representation of how transparent my rgb is into, well, alpha.

Right?