I love the potential of the dirt node for adding a grime texture to my scene, but I have many tiling textures. Is there any way to add a 'mix node' to all of my materials at once? I'm assuming there's some way to instance a material node, and then manually add this instance (via a mix) to all of my materials manually. But I'd love some way to apply this mix to my entire scene in a single step.
Thanks in advance!