It would be interesting to see these run against a "null" canvas backend to understand how much of the time is JS dispatch versus draw. Also, I think recent Chr

It would be interesting to see these run against a "null" canvas backend to understand how much of the time is JS dispatch versus draw. Also, I think recent Chromium doesn't perform the drawing directly, but records the commands and plays them back in another process, so I'd expect any readback operations (where JS sees the raw pixels) to be slow.