Sample code of OpenGL based from http://open.gl. Code is based on tutorial on the website.
Make sure GLFW, GLEW, OpenGL, libpng++, and glm is installed.
The default compiler is clang++, but feel free to switch to g++ by running export CXX=g++
beforehand.
From June 27, 2019 onwards, this work is licensed under MIT. The contents of this sample is built from tutorial based on <open.gl> but contains no directly copied code or works derived directly from contents of the article.