Fixed a performance issue. Post fix frame rate improved by 10% in local tests.
Fixed a performance issue. Post fix frame rate improved by 10% in local tests.

--HG--
branch : v1-9

jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre,jhu-lcsr-forks/ogre