Merge "Use LUT for computing final shadow alpha" into nyc-dev
am: b2e36d7939

* commit 'b2e36d7939610de538a6ec95a821b61b365b3073':
  Use LUT for computing final shadow alpha

Change-Id: Ia17e3b93e9ade0633aee5a1e9edd60b92dd1e062