adding missing texs
addinmg missing texs
minor fix
some code optimizations
let the last pass render to screen (avoids one pass)
Revert "let the last pass render to screen (avoids one pass)"

This reverts commit 95bc9d34555ffaedd5b18877bd102d2a2320edfc.
fixed previous commit
bloated post shader was slowing my laptop to much down. using
specialized post shaders now
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finally got resolving msfbo to fbo on nvidia to work! Not
exactly sure what went wrong before, maybe soe format stuff.
also using renderbuffer and texturerect now (hopefully its not broken
now again for my ati laptop)
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some minor fixes for laptop
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fixing post shader
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minor stuff
optimize shaders abit
precompute transform matrix for instances
fixed bug with backface culling