Simple Pathtracing (2012)
I see a Inigo Quilez link, I upvote! He's one of those incredible artist-engineer out there always pushing boundaries further and sharing his ideas and techniques publicly.If you have some time today, watch a few of his videos on his youtube channel, it's incredible to see his creation process in action: https://www.youtube.com/@InigoQuilezFor example, "Painting a character with maths" is mind-blowing and packed with SO MUCH educative content: https://www.youtube.com/watch?v=8--5LwHRhjk