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    1.0.24 • Public • Published

    gl-bench Bundlephobia CircleCI Codecov

    WebGL performance monitor that showing percentage of GPU/CPU load.


    Examples / e2e tests

    Pros and cons

    Pros Cons
    CPU/GPU percentage load Shipped only with ES6 classes
    Cool themes and loggers Size not so tiny
    Chart show inactive page or significant performance drop
    Two and more measuring in one loop
    Support for devices with 120+ FPS
    Web workers support
    Typescript support
    It is 2x faster than Stats.js in Chrome accorging to stress test

    How it works

    For GPU/CPU synchronization I am use gl.getError(), it is better than gl.readPixels() at least for me. Code is asynchronous and not stall rendering pipeline by hitting CPU limit due to waiting GPU answer, so you can calculate your heavy physics on CPU with this monitor. If you want turn off GPU tracking just press on it with one click. Check online examples/e2e tests to find out how it works. Version 1 used the EXT_disjoint_timer_query extension, but it not supported on some pc anymore.

    Usage with Three.js

    Add script on page from npm or jsdelivr/unpkg and wrap monitored code with begin/end marks

    import GLBench from 'gl-bench/dist/gl-bench';
    let bench = new GLBench(renderer.getContext());
    function draw(now) {
      // monitored code
    renderer.setAnimationLoop((now) => draw(now));

    Using TypeScript

    Replace import GLBench from 'gl-bench/dist/gl-bench'; into import GLBench from 'gl-bench/dist/gl-bench.module';

    Profiling with another WebGL frameworks

    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');

    Custom settings

    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) },


    Fork this repository and install the dependencies, after that you can start dev server with npm run dev and open examples in browser localhost:1234.


    npm i gl-bench

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