import GLBench from 'gl-bench/dist/gl-bench';
let bench = new GLBench(renderer.getContext());

function draw(now) {
  bench.begin();
  // monitored code
  bench.end();
  bench.nextFrame(now);
}

renderer.setAnimationLoop((now) => draw(now));

let gl = canvas.getContext('webgl') || canvas.getContext('experimental-webgl');
let bench = new GLBench(gl);

// engine initialization with instanced_arrays/draw_buffers webgl1 extensions goes after!

function draw(now) {
  bench.begin('first measure');
  // some bottleneck
  bench.end('first measure');

  bench.begin('second measure');
  // some bottleneck
  bench.end('second measure');

  bench.nextFrame(now);
  requestAnimationFrame(draw);
}
requestAnimationFrame(draw);

let bench = new GLBench(gl, {
  css: 'newStyleString',
  svg: 'newSvgString',
  dom: newDomContainer,
  withoutUI: false,
  trackGPU: false,      // don't track GPU load by default
  chartHz: 20,          // chart update speed
  chartLen: 20,
  paramLogger: (i, cpu, gpu, mem, fps, totalTime, frameId) => { console.log(cpu, gpu) },
  chartLogger: (i, chart, circularId) => { console.log('chart circular buffer=', chart) },
};