Screentone Shading in Blender Internal / Blender Cycles
Philip Holzmann is at it again. This time he is showing us how to make screentone shaders on both Blender Internal Renderer and Cycles. This is just to show how much ahead you are when you have mastered the basics of Pixel Math.
You can find the full details of these shaders at his blogpost at https://sharkigator.wordpress.com/2016/01/23/screentone-shading/