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
|
<!DOCTYPE HTML>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="canvas-display-p3.js"></script>
<script>
// Test that drawing ImageBitmaps with different image source bit depths and
// color profiles into sRGB and Display P3 canvases works, by reading pixels
// with getImageData() as sRGB and Display P3 values.
for (let [filename, expectedPixels] of Object.entries(imageTests)) {
for (let contextColorSpace of ["srgb", "display-p3"]) {
for (let imageDataColorSpace of ["srgb", "display-p3"]) {
for (let cropSource of [false, true]) {
async_test(function(t) {
let image = new Image();
image.onload = t.step_func(function() {
let canvas = document.createElement("canvas");
canvas.width = 2;
canvas.height = 2;
let ctx = canvas.getContext("2d", { colorSpace: contextColorSpace });
let imageBitmapPromise;
if (cropSource)
imageBitmapPromise = createImageBitmap(image, 1, 1, 1, 1);
else
imageBitmapPromise = createImageBitmap(image);
imageBitmapPromise.then(t.step_func_done(function(imageBitmap) {
ctx.drawImage(imageBitmap, 0, 0);
let imageData = ctx.getImageData(0, 0, 1, 1, { colorSpace: imageDataColorSpace });
let expected = expectedPixels[`${contextColorSpace} ${imageDataColorSpace}`];
assert_true(pixelsApproximatelyEqual(imageData.data, expected), `Actual pixel value ${[...imageData.data]} is approximately equal to ${expected}.`);
}));
});
image.src = `resources/${filename}`;
}, `${filename}, Context ${contextColorSpace}, ImageData ${imageDataColorSpace}, cropSource=${cropSource}`);
}
}
}
}
</script>
|
