Making a smiley in ShaderToy

In part 2 of this series we ended up with a rather simple smiley. This time we make another smiley, from scratch, with the techniques I discussed in previous videos.

Live ShaderToy version: https://www.shadertoy.com/view/lsXcWn

Previous Video: https://www.youtube.com/watch?v=jKuXA0trQPE

Next Video: https://www.youtube.com/watch?v=vlD_KOrzGDc

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