Distance/Extrusion map...possible?

Hello,
I would like to know if I could achieve distance map effect like those with Amplify Shader:


If yes, is there a tutorial/howto on that subject ?
Thank you very much!
I would like to know if I could achieve distance map effect like those with Amplify Shader:


If yes, is there a tutorial/howto on that subject ?
Thank you very much!