Hello I found my desired shader shader http://glsl.heroku.com/e # 5604,6 and tried to use it in my sketch, but it does not work. I can not understand what I'm doing wrong, please tell me what I'm doing wrong: ((

Hi :). My name is Timur. Please tell me, how can i use shaders for simple object. For example, I want to each rectangle looks like a source of ligth-blue, so it should cover part of background(initially all in a dark). I know that for this use glow shader, but i can't understand how use this?  And please give me simple example of using glow shader for processing 2.0