Reduce blur amount
Changed m_grand_prix of RaceManager to be an object (and not a pointer to
an object) anymore, which fixes a memory leak (and I also reverted my quick
fix from last night de7ceb0c2d6e31a25651993e77cd945e1b3bb126 to fix a crash,
which now not necessary anymore.
Minor style changes.
Replaced upright constraint with simpler code that keeps the kart
in mid air aligned to the gravity. This will also enable jumps in
section where the gravity is not in the default direction.
Only assign tangents for mesh buffers that actually use normal maps
Support for glDrawElements{Instanced}?BaseVertex
Add a global VAO manager
Use global VAO for rendering