Thursday the 23rd of may, 3.47pm, a scream coming from the desk 3E21 broke the silent working atmosphere of the 3rd floor.
" IT'S WORKINNNNGGG !!!"
In other words, my first Shaders are working. That's one small step for vislab, one giant leap for me !
But what kind of shader ? Toon Shader ! If you have seen the movie Who Framed Roger Rabbit then you already know what I'm talking about. I you haven't, go rent it 'cause this is a good movie
Anyway, let's the pictures talk, they are better than words to talk about graphics :

This first picture shows in green the detection of edges

This is the final result, the edges are colored in black and the continuous light intensity has been replaced by discrets light intensity values.

Thanks John and Ren for their help in GLSL, CJ and Kelvin for C++, Balint for his help in general 3D, Shea for the music that helped me not breaking my keyboard, Charlotte for the perfect Coffee Froth and Masa for his explanation of what a Toon Shader must look like.