title: Unity: How do I upgrade my materials to be HDRP compatible?
body: <p>I have recently tried to upgrade my unity pipeline to the HDRP to do this I went into package manager and enabled preview packages then installed HDRP when it had finished the HDRP render pipeline wizard appeared and I clicked fix all my scene now looks like this</p>
  <p><a href="https://i.stack.imgur.com/o6K4p.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o6K4p.jpg" alt="image of what the scene looks like" /></a></p>
  <p>the skybox has changed the entire scene seems to be shaded black and some of my materials have turned purple I understand to an extent why the last one has happened because they need to be HDRP shaders but I don't know how to fix it. This is my first unity game and I'm very new so if anyone can help pleas make it as simple as possible. I did make a backup before switching to HDRP.</p>