Canvas getImageData (v5)

Revision 5 of this benchmark created by qiao on

Preparation HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js">
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
one tile
var canvas = document.createElement("canvas")
canvas.width = 2000
canvas.height = 2000
var ctx = canvas.getContext("2d")
data = ctx.getImageData(0, 0, 2000, 2000)
ready
multiple tiles
var canvases = []
for (var x = 0; x < 64; x++) {
  var canvas = document.createElement("canvas");
  canvas.width = 256;
  canvas.height = 256;
  canvases.push(canvas)
}

for (var x =0;x<canvases.length;x++) {
 o = canvases[x].getContext("2d").getImageData(0,0,256,256);
}
ready
larger tiles
var canvases = []
for (var x = 0; x < 16; x++) {
  var canvas = document.createElement("canvas");
  canvas.width = 512;
  canvas.height = 512;
  canvases.push(canvas)
}

for (var x =0;x<canvases.length;x++) {
 o = canvases[x].getContext("2d").getImageData(0,0,512,512);
}
ready

Revisions

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