model & texture:
- texture.jpg [https://commons.wikimedia.org/wiki/File:Mercator-projection.jpg]
- texture.png [https://vi.wikipedia.org/wiki/T%E1%BA%ADp_tin:CCS_Sakura's_magic_circle.png]
- bunny.obj [https://raw.githubusercontent.com/McNopper/OpenGL/master/Binaries/bunny.obj]
- dragon.obj [https://raw.githubusercontent.com/McNopper/OpenGL/master/Binaries/dragon.obj]
- lucy.obj [https://raw.githubusercontent.com/alecjacobson/common-3d-test-models/master/data/lucy.obj]
