allow toggling vsync with Key V #82
implement early bailing + general shadowing improvements #82
fix sampler uniform type #82
fetch physx data only when needed #82
fetch height at hand position when scene fbo is bound while rendering #82
fix TerrainTile bind/unbind #82
fix major performance problem: call TerrainTile::initialize() only once #82

do not load the rock.raw in every frame..
remove fma for glsl 330 compatibility #82
Merge remote-tracking branch 'origin/master' into rendering_performance_82

Conflicts:
	src/hand.cpp
Merge pull request #83 from lanice/rendering_performance_82

Rendering performance 82