06-30-2014, 05:18 PM
I was recently working on Pixel Art GLSL shaders that help you as you're working on your art. Here's the blog post with the source, all MIT licensed. ;D
One make sure that a sprite only consists of a set palette. Sometimes a mistake might mean you have a few stray colors, this will parce the image and in milliseconds correct it (GLSL is super fast xD).
Another helps with making sure you're in a certain bitrate for images. currently we're using 8 bits per channel, so 32 bit for rgba, or 24 bit for rgb. with this shader you can lower the bitrate so you could be at say, the Game Boy Color's bitrate.