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<!DOCTYPE HTML>
<html>
<head>
<title>WebGL in OffscreenCanvas</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script src="/tests/SimpleTest/WindowSnapshot.js"></script>
<link rel="stylesheet" href="/tests/SimpleTest/test.css">
</head>
<body>
<script type="text/js-worker">
function ok(expect, msg) {
postMessage({"type": "status", status: !!expect, msg: msg});
}
onmessage = function(event) {
var bitmap = event.data.bitmap;
ok(!!bitmap, "Get the ImageBitmap from the main script.");
var offscreenCanvas = new OffscreenCanvas(64, 64);
var ctx = offscreenCanvas.getContext('bitmaprenderer');
ok(!!ctx, "Get bitmaprenderer context on worker.");
ctx.transferFromImageBitmap(bitmap);
var resultBitmap = offscreenCanvas.transferToImageBitmap();
postMessage({"type": "bitmap", bitmap: resultBitmap}, [resultBitmap]);
}
</script>
<script>
SimpleTest.waitForExplicitFinish();
function createCanvas(width, height) {
var htmlCanvas = document.createElement('canvas');
htmlCanvas.width = width;
htmlCanvas.height = height;
document.body.appendChild(htmlCanvas);
return htmlCanvas;
}
function runTest(canvasWidth, canvasHeight, nextTest) {
var canvas1 = createCanvas(canvasWidth, canvasHeight);
var ctx = canvas1.getContext("2d");
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
var canvasRef = createCanvas(90, 90);
var ctx = canvasRef.getContext("2d");
// Clear with black transparent first
ctx.fillStyle = "rgba(0, 0, 0, 0)";
ctx.fillRect(0, 0, 90, 90);
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
createImageBitmap(canvas1).then(function(bmp) {
document.body.removeChild(canvas1);
var canvas2 = createCanvas(90, 90);
var ctx2 = canvas2.getContext("bitmaprenderer");
ctx2.transferFromImageBitmap(bmp);
ok(canvasRef.toDataURL() == canvas2.toDataURL(), "toDataURL should return same result.");
// Exam render result
canvasRef.style.display = "none";
canvas2.style.display = "block";
var snapshot = snapshotWindow(window);
canvasRef.style.display = "block";
canvas2.style.display = "none";
var snapshotRef = snapshotWindow(window);
// bitmaprenderers use an ImageLayer whereas a normal 2d canvas uses a canvas layer. This
// can result in some anti-aliasing differences on the edge. We consider slight AA differences
// to be reasonable when using different codepaths so fuzz a little bit.
var fuzz = { numDifferentPixels: 0,
maxDifference: 0 };
if (SpecialPowers.Services.appinfo.widgetToolkit == "android") {
fuzz.maxDifference = 2;
fuzz.numDifferentPixels = 131;
}
var results = compareSnapshots(snapshot, snapshotRef, true, fuzz);
ok(results[0], "Screenshots should be the same");
document.body.removeChild(canvasRef);
document.body.removeChild(canvas2);
nextTest();
});
}
function scaleTest() {
var canvas1 = createCanvas(64, 64);
var ctx = canvas1.getContext("2d");
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, 64, 64);
var canvas2 = createCanvas(64, 64);
var ctx2 = canvas2.getContext("2d");
ctx2.fillStyle = "#00FF00";
ctx2.fillRect(0, 0, 64, 64);
var p1 = createImageBitmap(canvas1);
var p2 = createImageBitmap(canvas2);
Promise.all([p1, p2]).then(function(bitmaps) {
document.body.removeChild(canvas1);
document.body.removeChild(canvas2);
// Create a large canvas then shrink.
var canvas3 = createCanvas(128, 128);
var ctx3 = canvas3.getContext("bitmaprenderer");
ctx3.transferFromImageBitmap(bitmaps[0]);
var snapshotLargeRef = snapshotWindow(window);
canvas3.width = 32;
canvas3.height = 32;
var snapshotSmall = snapshotWindow(window);
document.body.removeChild(canvas3);
// Create a small canvas then grow.
var canvas4 = createCanvas(32, 32);
var ctx4 = canvas4.getContext("bitmaprenderer");
ctx4.transferFromImageBitmap(bitmaps[1]);
var snapshotSmallRef = snapshotWindow(window);
canvas4.width = 128;
canvas4.height = 128;
var snapshotLarge = snapshotWindow(window);
document.body.removeChild(canvas4);
var resultsLarge = compareSnapshots(snapshotLarge, snapshotLargeRef, true);
ok(resultsLarge[0], "Screenshots should be the same");
var resultsSmall = compareSnapshots(snapshotSmall, snapshotSmallRef, true);
ok(resultsSmall[0], "Screenshots should be the same");
runTestOnWorker();
});
}
function runTestOnWorker() {
var canvas1 = createCanvas(64, 64);
var ctx = canvas1.getContext("2d");
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, 64, 64);
var blob = new Blob(Array.prototype.map.call(document.querySelectorAll("script[type=\"text\/js-worker\"]"), function (oScript) { return oScript.textContent; }),{type: "text/javascript"});
var worker = new Worker(window.URL.createObjectURL(blob));
createImageBitmap(canvas1).then(function(bmp) {
worker.postMessage({bitmap: bmp}, [bmp]);
worker.onmessage = function(event) {
if (event.data.type == "status") {
ok(event.data.status, event.data.msg);
} else if (event.data.type == "bitmap") {
var canvas2 = createCanvas(64, 64);
var ctx2 = canvas2.getContext('bitmaprenderer');
ctx2.transferFromImageBitmap(event.data.bitmap);
ok(canvas1.toDataURL() == canvas2.toDataURL(), 'toDataURL should be the same');
SimpleTest.finish();
}
}
});
}
SpecialPowers.pushPrefEnv({'set': [
['gfx.offscreencanvas.enabled', true],
]}, runTest.bind(this, 64, 64, runTest.bind(this, 128, 128, scaleTest)));
</script>
</body>
</html>
|
