ztenghui 9122b1b168 Use float instead of double to increase spot shadow perf
This is helping spot shadow for 15%-20% increase.
With the new algorithm, we are less sensitive to the floating point error.

b/16712006

Change-Id: Ie30a6ce01e73d56054a0cf65a84549454339a7fd
2014-10-03 15:30:53 -07:00
..
2014-08-22 16:25:04 -07:00