title: Custom shader does not receive light
body: <p>I made a grid shader which is working fine. However, it does not get impacted at all by any light. Just so that you know concerning the plane having the shader:</p>
  <ul>
  <li>Its dimensions are 1000x1x1000 (so wide enough)</li>
  <li>Displays shadows with any other material and cast shadows is on</li>
  <li>Using Unity 2019.3.0f3</li>
  <li>Universal Render Pipeline</li>
  </ul>
  <p><a href="https://i.stack.imgur.com/MuJCB.png" rel="nofollow noreferrer">The plane using custom grid shader</a> (not receiving light)</p>
  <p><a href="https://i.stack.imgur.com/XjQFW.png" rel="nofollow noreferrer">The plane using basic shader</a> (receiving light)</p>
  <p><a href="https://pastebin.com/FWGeAS9V" rel="nofollow noreferrer">Custom grid shader code</a></p>
  <p>I tried few solutions though including adding <code>FallBack &quot;Diffuse&quot;</code> at the end, or <code>#include</code> along with <code>TRANSFER_SHADOW</code> things. However, these don't work either.</p>