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Test Info: Warnings
- This test has a WPT meta file that expects 56 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /html/canvas/element/manual/wide-gamut-canvas/canvas-display-p3-pattern-image.html - WPT Dashboard Interop Dashboard
<!DOCTYPE HTML>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="canvas-display-p3.js"></script>
<script>
// Test that patterns created from images with different bit depths and color
// profiles into can be drawn into sRGB and Display P3 canvases, 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"]) {
async_test(function(t) {
let image = new Image();
image.onload = t.step_func_done(function() {
let canvas = document.createElement("canvas");
canvas.width = 4;
canvas.height = 4;
let ctx = canvas.getContext("2d", { colorSpace: contextColorSpace });
ctx.fillStyle = ctx.createPattern(image, "repeat");
ctx.fillRect(0, 0, 4, 4);
let imageData = ctx.getImageData(2, 2, 1, 1, { colorSpace: imageDataColorSpace });
let expected = expectedPixels[`${contextColorSpace} ${imageDataColorSpace}`];
assert_true(pixelsApproximatelyEqual(imageData.data, expected), `Actual pixel value ${[...imageData.data]} is approximately equal to ${expected}.`);
t.done();
});
image.src = `resources/${filename}`;
}, `${filename}, Context ${contextColorSpace}, ImageData ${imageDataColorSpace}`);
}
}
}
</script>