adding verbosity flag
cleanup
refactor
merge all demos into a single one
two sided property is a geometry state (needed for shadow mapping to
work for these objects)
handle polygon mode correctly in shadow maps
fine tuning shadows a bit
minor changes
dummy
rename video class to media player, because it plays any media vlc can
play. adding methods for controling volume of media. adding flag
indicating if audio/video data required for a file
cleanup
Revert "cleanup"

This reverts commit 1ecc0bc63c9974541f39e1586886c0a3a6ad78f2.
cleanup
cleanup
cleanup
cleanup
cleanup
cleanup
cleanup
cleanup