This reminds me of generating signed distance fields from bitmaps by rendering a cone at every target pixel with a vertex color of white at the point and black

This reminds me of generating signed distance fields from bitmaps by rendering a cone at every target pixel with a vertex color of white at the point and black at the base. I like the method because not only is it silly, it's also very easy to do on GPU and good enough so I actually have used it in real products.