blob: 25d49052bb4cadc6bac461a4c063e1f1e2f62b28 [file] [log] [blame]
<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by tools/gentest.py. -->
<title>OffscreenCanvas test: 2d.imageData.create2.large</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/common/canvas-tests.js"></script>
<h1>2d.imageData.create2.large</h1>
<p class="desc">createImageData(sw, sh) works for sizes much larger than the canvas</p>
<script>
var t = async_test("createImageData(sw, sh) works for sizes much larger than the canvas");
t.step(function() {
var offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');
var imgdata = ctx.createImageData(1000, 2000);
_assertSame(imgdata.data.length, imgdata.width*imgdata.height*4, "imgdata.data.length", "imgdata.width*imgdata.height*4");
_assert(imgdata.width < imgdata.height, "imgdata.width < imgdata.height");
_assert(imgdata.width > 0, "imgdata.width > 0");
var isTransparentBlack = true;
for (var i = 0; i < imgdata.data.length; i += 7813) // check ~1024 points (assuming normal scaling)
if (imgdata.data[i] !== 0)
isTransparentBlack = false;
_assert(isTransparentBlack, "isTransparentBlack");
t.done();
});
</script>