convert CMRotationMatrix of Core Motion to GLKMatrix in iOS 4월 19, 2017 http://www.oomesvisionsystems.com/OVS/Guides/Entries/2012/7/10_Measure_camera_pose_with_CoreMotion.html 자세한 내용 보기
GLSL version and Changes OpenGL 2.0 to OpenGL 3.0 4월 14, 2017 https://github.com/mattdesl/lwjgl-basics/wiki/GLSL-Versions http://www.shaderific.com/blog/2014/3/13/tutorial-how-to-update-a-shader-for-opengl-es-30 shaders & glsl in swift http://www.swiftgl.org/learn/01-shaders.html 자세한 내용 보기