Talk:Blend Method Parameter

New Blend Method

I would like to have a blend method that allows apply effects over a certain region of a composition. Let's call this new Blend Method "X". So the Layer stack would be like this:

Effect Layer (Blend Method: X)
Cropping Layer (Blend Method: A)
Background Layer (Blend Method: doesn't matter)

A is any Blend Method.

The blend method X would do the following:

Apply the effect over the background using the composite blend method:

Effect Layer (Blend Method Composite)
Background Layer 
-----------------------
Effected Background Layer

Then apply a Straight Onto blend method over the Cropping layer

Effect Background Layer (Blend Method Straight Onto)
Cropping Layer 
---------------------------------------
Cropped Effected Background

Later apply the result on the background using the Cropping Layer Blend Method

Cropped Effected Background (Blend Method A)
Background Layer
-------------------------------------------
Cropped Effected Background Onto Background

I propose call this X Blend Method: "Cropped Onto"