From the documentation i've read it is a VEX Shader, this mean i should use the bind VOP node to get an external attribute to drive the value i want. But because it is run on the camera i have no idea how to pass that value to the shader, on top of that, the camera is in the Stage contexte, so the only thing i can set on it are primvars (wich are not used by vex shader from what i understood).
In all case i haven't found any documentation on that, if anyone have a solution, you'r welcome, thanks
