Comment by dahart

Fwiw, that’s not the best way to draw a circle in general, the test shows it’s the fastest way to tessellate a circle, among the methods the author tried, and using a specific GPU. You don’t have to use triangles to draw a circle, and the author didn’t try all possible tessellations, and the author there didn’t compare perf against any other method (a shader, for example), and the also didn’t investigate accuracy. Their fast method might have numerical accuracy issues with thin sliver triangles at some point.