This is the second article from my OpenGL 101 series. In the first article we’ve seen how to open a window for our OpenGL application with the GLFW library and how to compile and run the code on Windows, OS X and Linux. It is time to actually draw something using OpenGL.

When an image is needed to be scaled either larger than its size or smaller, it usually turns ugly by mare specifications of width and height. This post will help you to make it look beautiful.