Sphere in OpenGL
Rewritten code from http://stackoverflow.com/questions/5988686/creating-a-3d-sphere-in-opengl-using-visual-c/5989676#5989676
Texture loading is done with:
stb_image.h
by Sean Barrett
https://github.com/nothings/stb
and
tdogl::Texture (requires few additional tdogl headers)
by Thomas Dalling
https://github.com/tomdalling/opengl-series
