three.js on ui plane demo https://codepen.io/gnjo/pen/YzqgBBm?editors=0010
script(src="https://gnjo.github.io/hud/hud.js")
let h=hud(renderer);
let ctx=h.ctx//h.update()
ctx.clearRect(0,0,640,480)
ctx.fillText(Date.now()+'',640/2,32)
h.update()