title: How do I blend texture over other texture in unity shadergraph but only on the shadow side?
body: <p>I am currently making a game based around colonizing planets, and I would like to know how I overlap a lightmap texture of the earth on a sphere, but only at the positions which are affected by shadow in shadergraph.
  I am using <strong>unity 2020.1.0a25</strong> with the <strong>universal render pipeline</strong>.</p>