tree 19ed4e4667c55661c4e7bd301cc2f8deca2c5a51
parent f4d2c8eebd8113482b48e0b8f83deb4b2f1f9b22
author ztenghui <ztenghui@google.com> 1415818575 -0800
committer ztenghui <ztenghui@google.com> 1415825888 -0800

Shadow: Fix the crash in spot shadow

Fix the crash from searching for closest umbra vertex by initialized the
starting index correctly.

Fix another potential crash related to ray intersection by introducing epsilon.

b/18315089

Change-Id: I9ac9a781a885701a8388714d44f79a1d905e5d33