Comp Ops
 
 
 

The Comp Ops tool lets you apply a variety of compositing operators to two source images.

To apply Comp Ops operations:

  1. Drag a Comp Ops tool from the Composition folder in the Tools tab to the dependency graph in the Schematic view.
  2. Connect a source image to input A and another source image into input B of the Comp Ops node.
  3. Click the Operator button and select a compositing operator.
    Select: To:
    A over B Place input A on top of input B according to the alpha of the foreground image.
    B over A Place input B on top of input A according to the alpha of the foreground image.
    A in B Place the RGBA of input A into the alpha of input B.
    B in A Place the RGBA of input B into the alpha of input A.
    A out B Place the RGBA of input A into the invert alpha of input B.
    B out A Place the RGBA of input B into the invert alpha of input A.
    A atop B Place the RGBA of input A over the RGBA of input B but through the alpha of input B.
    B atop A Place the RGBA of input B over the RGBA of input A but through the alpha of input A.
    A xor B Create the union of the RGBA of inputs A and B minus the intersection of the RGBA of inputs A and B.
NoteThe Comp Ops tool has a masking input and its attributes are also animatable—see Pixel Masking and Animation Concepts.