Already installed when your OS is setup. ◼ But, you should use utility libraries ◼ OpenGL itself does not have OS-dependent features ◼ E.g.) Show up windows, mouse and keyboard interaction. ◼ GLUT (GL Utility Toolkit), GLFW (GL Framework), Qt, openFrameworks are famous utility libraries ◼ This course uses GLFW (it’s basic and good for study!) Computer Graphics Course @Waseda University