1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
<!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(canvasWidth, canvasHeight);
var ctx = canvasRef.getContext("2d");
// Clear with black transparent first
ctx.fillStyle = "rgba(0, 0, 0, 0)";
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, canvasWidth, canvasHeight);
createImageBitmap(canvas1).then(async 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 = await snapshotWindow(window);
canvasRef.style.display = "block";
canvas2.style.display = "none";
var snapshotRef = await 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 createSolidGreenBitmap(width, height) {
const canvas = createCanvas(width, height);
const ctx = canvas.getContext("2d");
ctx.fillStyle = "#00FF00";
ctx.fillRect(0, 0, width, height);
const bitmap = createImageBitmap(canvas);
document.body.removeChild(canvas);
return bitmap;
}
async function scaleTestCase(name, refWidth, refHeight, testWidth, testHeight, canvasWidth, canvasHeight) {
const refBitmap = await createSolidGreenBitmap(refWidth, refHeight);
const refCanvas = createCanvas(refWidth, refHeight);
const refCtx = refCanvas.getContext("bitmaprenderer");
refCtx.transferFromImageBitmap(refBitmap);
is(refCanvas.width, refWidth, name + ": refCanvas width " + refCanvas.width + " is ref " + refWidth);
is(refCanvas.height, refHeight, name + ": refCanvas height " + refCanvas.height + " is ref " + refHeight);
const refSnapshot = await snapshotWindow(window);
document.body.removeChild(refCanvas);
const bitmap = await createSolidGreenBitmap(testWidth, testHeight);
const canvas = createCanvas(canvasWidth, canvasHeight);
const ctx = canvas.getContext("bitmaprenderer");
ctx.transferFromImageBitmap(bitmap);
is(canvas.width, testWidth, name + ": canvas width " + canvas.width + " is bitmap " + testWidth);
is(canvas.height, testHeight, name + ": canvas height " + canvas.height + " is bitmap " + testHeight);
if (refWidth !== testWidth) {
canvas.width = refWidth;
is(canvas.width, refWidth, name + ": canvas width " + canvas.width + " is ref " + refWidth);
}
if (refHeight !== testHeight) {
canvas.height = refHeight;
is(canvas.height, refHeight, name + ": canvas height " + canvas.height + " is ref " + refHeight);
}
const snapshot = await snapshotWindow(window);
document.body.removeChild(canvas);
const results = compareSnapshots(snapshot, refSnapshot, true);
ok(results[0], name + ": screenshots should be the same");
return Promise.resolve();
}
async function scaleTest() {
await scaleTestCase("grow_unscaled", 64, 64, 64, 64, 32, 32); // Canvas grows, no scaling.
await scaleTestCase("grow_downscaled", 64, 64, 128, 128, 32, 32); // Canvas grows, scales down.
await scaleTestCase("grow_upscaled", 64, 64, 32, 32, 16, 16); // Canvas grows, scales up.
await scaleTestCase("same_downscaled", 64, 64, 128, 128, 128, 128); // Canvas unchanged, scales down.
await scaleTestCase("same_upscaled", 64, 64, 32, 32, 32, 32); // Canvas unchanged, scales up.
await scaleTestCase("shrink_unscaled", 64, 64, 64, 64, 128, 128); // Canvas shrinks, no scaling.
await scaleTestCase("shrink_downscaled", 64, 64, 128, 128, 256, 256); // Canvas shrinks, scales down.
await scaleTestCase("shrink_upscaled", 64, 64, 32, 32, 256, 256); // Canvas shrinks, scales up.
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();
}
}
});
}
runTest(64, 64, runTest.bind(this, 128, 128, scaleTest));
</script>
</body>
</html>
|
