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2d.composite.canvas.lighter.worker.js
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2d.composite.canvas.lighter.worker.js
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// DO NOT EDIT! This test has been generated by tools/gentest.py.
// OffscreenCanvas test in a worker:2d.composite.canvas.lighter
// Description:
// Note:
importScripts("/resources/testharness.js");
importScripts("/2dcontext/resources/canvas-tests.js");
var t = async_test("");
var t_pass = t.done.bind(t);
var t_fail = t.step_func(function(reason) {
throw reason;
});
t.step(function() {
var offscreenCanvas = new OffscreenCanvas(100, 50);
var ctx = offscreenCanvas.getContext('2d');
var offscreenCanvas2 = new OffscreenCanvas(offscreenCanvas.width, offscreenCanvas.height);
var ctx2 = offscreenCanvas2.getContext('2d');
var promise = new Promise(function(resolve, reject) {
var xhr = new XMLHttpRequest();
xhr.open("GET", '/images/yellow75.png');
xhr.responseType = 'blob';
xhr.send();
xhr.onload = function() {
resolve(xhr.response);
};
});
promise.then(function(response) {
createImageBitmap(response).then(bitmap => {
ctx2.drawImage(bitmap, 0, 0);
ctx.fillStyle = 'rgba(0, 255, 255, 0.5)';
ctx.fillRect(0, 0, 100, 50);
ctx.globalCompositeOperation = 'lighter';
ctx.drawImage(offscreenCanvas2, 0, 0);
_assertPixelApprox(offscreenCanvas, 50,25, 191,255,128,255, "50,25", "191,255,128,255", 5);
}, t_fail);
}).then(t_pass, t_fail);
});
done();