<!
DOCTYPE HTML>
<
title>
Canvas test:
canvas demotion</
title>
<
script src=
"/tests/SimpleTest/SimpleTest.js"></
script>
<
link rel=
"stylesheet" href=
"/tests/SimpleTest/test.css">
<
body>
<
canvas id=
"c" width=
"100" height=
"50"><p class=
"fallback">FAIL (fallback content)</p></
canvas>
<
script>
SimpleTest.waitForExplicitFinish();
SimpleTest.requestFlakyTimeout(
"untriaged");
addLoadEvent(function () {
var canvas = document.getElementById(
'c');
var ctx =
canvas.getContext(
'2d');
ctx.fillStyle =
'rgb(50, 50, 50)';
ctx.fillRect(0, 0, 100, 50);
ctx.translate(25, 25);
SpecialPowers.wrap(ctx).demote();
setTimeout(function() {
ctx.fillStyle =
'rgb(127, 127, 127)';
ctx.fillRect(0, 0, 10, 10);
var pixels = ctx.getImageData(0, 0, 1, 1);
ok(pixels.data[0] === 50,
"pixels.data[0] expected 50, got " + pixels.data[0]);
ok(pixels.data[1] === 50,
"pixels.data[1] expected 50, got " + pixels.data[1]);
ok(pixels.data[2] === 50,
"pixels.data[2] expected 50, got " + pixels.data[2]);
pixels = ctx.getImageData(25, 25, 1, 1);
ok(pixels.data[0] === 127,
"pixels.data[0] expected 127, got " + pixels.data[0]);
ok(pixels.data[1] === 127,
"pixels.data[1] expected 127, got " + pixels.data[1]);
ok(pixels.data[2] === 127,
"pixels.data[2] expected 127, got " + pixels.data[2]);
SimpleTest.finish();
}, 50);
});
</
script>
