canvas-clearRect-size

JavaScript performance comparison

Revision 19 of this test case created by Jarrod Oberto

Info

clear rect on full canvas vs partial canvas

Preparation code

<script>
  var c = document.createElement('canvas');
  c.width = c.height = 450;
document.body.appendChild( c );
  var ctx = c.getContext('2d');
</script>

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Testing in unknown unknown
Test Ops/sec
clearRect full
ctx.clearRect(0, 100, 450, 200);
pending…
clearRect partial
ctx.clearRect(0, 0, 450, 450);
pending…

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