Canvas Pixel Manipulation
JavaScript performance comparison
Preparation code
<canvas id="canvas" height="600" width="600"></canvas>
<script>
Benchmark.prototype.setup = function() {
var canvas = document.getElementById('canvas');
var canvasWidth = canvas.width;
var canvasHeight = canvas.height;
var ctx = canvas.getContext('2d');
var imageData = ctx.getImageData(0, 0, canvasWidth, canvasHeight);
var data = imageData.data;
var buf = new ArrayBuffer(imageData.data.length);
var buf8 = new Uint8ClampedArray(buf);
var data32 = new Uint32Array(buf);
};
Benchmark.prototype.teardown = function() {
ctx.putImageData(imageData, 0, 0);
};
</script>
Preparation code output
<canvas id="canvas" height="600" width="600"></canvas>
Test runner
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Test | Ops/sec | |
---|---|---|
8-bit Pixel Manipulation
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pending… |
32-bit Pixel Manipulation
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pending… |
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