- re introduced the alphaDiscardThreshold as explained in prvious commit. It's not binded to the AlphaTestFallOff fixedfunc binding
- Added a small poly offset to post shadow technique, this greatly help in fixing shadow acne.
- Added Poisson disc sampling PCF Filtering for shadows
- Properly passed the shadow map size as a define in the shaders and remove the hardcoded value
- Pssm15 don't use the textureSize function anymore and use the same shadow map size define ( this increased performance quite a bit)
- Optimized the shaders code a bit
- Better PSSM test
git-svn-id: https://jmonkeyengine.googlecode.com/svn/trunk@9750 75d07b2b-3a1a-0410-a2c5-0572b91ccdca
