Shape Eyes / Nuke Gizmo

This is a Nuke Gizmo that allows you to reshape your character Irises.

Just copy / paste the content of the Gizmo in your Nuke script.

The gizmo takes an RGB Eye Matte like the image below as its input image and returns a Matte that can be used to drive a Color Correction in Nuke.

We can use the output of our Gizmo as a Matte to drive both a Color Correction to darken the Fill side of our Irises or brighten the Key side of our Irises... or both!