in GLSL 1.5 but with older GLSL spec'ed I was getting implicit cast errors. I believe these are harmless if not needed but I'm not sure if there are hidden ramifications. This looks more correct to my eyes. git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@10866 75d07b2b-3a1a-0410-a2c5-0572b91ccdca