Compositing Two or More Layers

To composite two or more layers:

1. Drag the 2D Compositor tool to the dependency graph in the Schematic view and connect an image or tool output to the Layer 1 Back input tab. This is the background for the first layer.
   
   NoteIf you drop a 2D Compositor tool onto an existing connection between two nodes, the existing composition becomes the Layer 1 background input.
2. Connect a composition to the Layer 1 Front input. This is the image you want to have on top of the background.
   
3. Connect a composition to the Layer 1 Matte input. This image will determine what portions of the background are visible if the image does not have an embedded alpha channel.
   
4. Add more layers as desired. If a composition has an embedded alpha channel, the alpha channel will appear black. You can connect the same image to the associated Matte input to achieve the desired result.
   

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