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GLSL, where to start
Hello! does anyone know about some very begginer tutorial about GLSL shaders? the one at the official website looks very advanced :S .. it would be great to know at least a very vague idea of how it works, and maybe write a little script. just to be amazed about writing little GPU instructions..
Answers
Hi, This book is quite good. OpenGL_4.0_Shading_Language_Cookbook
I made a very simple shader to help you get started. Sometimes it's nice to fool around before burying your nose in heavy texts.
https://www.shadertoy.com/view/lsfSzB
Even if it's not Processing specific, this is very well explained: http://aerotwist.com/tutorials/an-introduction-to-shaders-part-1/
Requires some effort to install, but I find it quite good: https://github.com/stackgl/shader-school