In one sense screen is the opposite of multiply, in that multiply is:
imageX * imageY
and screen is:
1 – (1-imageX) * (1-imageY)
in other the words the invert of two inverted images – multiplied.
What I’m looking for is a super simple:
imageX / imageY
The grand purpose here, if anyone is interested, is to recreate existing tranfer modes (such as color dodge, etc) with simple math ops so that can be used under eLin. Without that basic building block of a divide function this is hard to do.
And thanks for pointing me towards calculations and arithmetic – but unfortunately, neither offer divide.
Erik