render-vs-prerender

JavaScript performance comparison

Revision 22 of this test case created

Preparation code

<canvas id="canvas1" width="500" height="500"></canvas>
<canvas id="canvas2" width="500" height="500"></canvas>
<script>
    var can = document.getElementById('canvas1');
        var ctx = can.getContext('2d');
       
    var can2 = document.createElement('canvas');
        var ctx2 = can2.getContext('2d');
       
    ctx2.beginPath();
    ctx2.fillStyle = 'red';
    ctx2.lineWidth = 4;
    ctx2.moveTo(10,10);
    ctx2.lineTo(10,30);
    ctx2.lineTo(30,30);
    ctx2.fill();
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
render
    ctx2.beginPath();
    ctx2.fillStyle = 'red';
    ctx2.lineWidth = 4;
    ctx2.moveTo(10,10);
    ctx2.lineTo(10,30);
    ctx2.lineTo(30,30);
    ctx2.fill();
pending…
pre-rendered
ctx.drawImage(can2, 0, 0);
   
   
 
pending…

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