runnable fragment
code snippet
uniform sampler2D inputImage;
uniform float colorize;
uniform int matrixMode;
precision mediump float;
/*{
"CATEGORIES": [
"Halftone Effect",
"Retro"
],
"CREDIT": "Hugh Kennedy, adapted by David Lublin",
"DESCRIPTION": "Bayer style dithering",
"INPUTS": [
{
"NAME": "inputImage",