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<!doctype html>
<title>posting an imagedata (from a cloned canvas) in an array</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
async_test(function() {
var canvas = document.createElement('canvas');
var clone = canvas.cloneNode(true);
var ctx = clone.getContext('2d');
var imagedata = ctx.getImageData(0, 0, 300, 150);
postMessage([imagedata], '*');
onmessage = this.step_func(function(e) {
function processPixels(imagedata) {
var pixeldata = imagedata.data;
for (var i = 0; i < pixeldata.length; i = i+4) {
pixeldata[i] = 128;
assert_equals(pixeldata[i], 128);
}
}
processPixels(e.data[0]);
this.done();
});
});
</script>
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