Here are renders of the glass:

[![enter image description here][1]][1] [![enter image description here][2]][2]

As you can see, the first image looks fine, but when the glass is broken and on the ground it appears black. This appears to be due to the shadow of the glass, but how do I fix it? I have never had this issue in any other renders with cell-fractured glass.

Here is the material node setup:

[![enter image description here][3]][3]


  [1]: https://i.sstatic.net/p62iD.png
  [2]: https://i.sstatic.net/D1Vso.png
  [3]: https://i.sstatic.net/ATEsT.png