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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
| commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
| tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /testing/web-platform/tests/png/cicp-chunk.html | |
| parent | Initial commit. (diff) | |
| download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip | |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'testing/web-platform/tests/png/cicp-chunk.html')
| -rw-r--r-- | testing/web-platform/tests/png/cicp-chunk.html | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/testing/web-platform/tests/png/cicp-chunk.html b/testing/web-platform/tests/png/cicp-chunk.html new file mode 100644 index 0000000000..8add5d602e --- /dev/null +++ b/testing/web-platform/tests/png/cicp-chunk.html @@ -0,0 +1,40 @@ +<!DOCTYPE html> +<title>PNG test: cICP chunk</title> +<link rel="help" href="https://w3c.github.io/PNG-spec/#cICP-chunk"> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> +<body> + +<h1>cICP chunk</h1> +<p class="desc">test pixel values of a display-p3 PNG</p> + +<p class="output">Actual output:</p> +<canvas id="c" class="output" width="100" height="50"><p class="fallback">FAIL (fallback content)</p></canvas> + +<ul id="d"></ul> +<script> +var t = async_test("test pixel values of a display-p3 PNG"); +const img = new Image(); +img.onload = () => { + _addTest(function(canvas, ctx) { + ctx.drawImage(img, 0, 0); + + var pixel = ctx.getImageData(5, 5, 1, 1, {colorSpace: "srgb", storageFormat: "uint8"}).data; + + // The pixel values stored are (51 red, 102 green, 153 blue). + // These numbers are chosen because 0.2 * 255 = 51. + // The image has a cICP chunk indicating the Display P3 color space. + // This results in decoded pixel values of (27 red, 104 green, 157 blue). + const pixel_expected = [27, 104, 157, 255]; + const epsilon = 2; + + _assertSame(pixel.length, pixel_expected.length, "pixel.length", "pixel_expected.length"); + assert_approx_equals(pixel[0], pixel_expected[0], epsilon); + assert_approx_equals(pixel[1], pixel_expected[1], epsilon); + assert_approx_equals(pixel[2], pixel_expected[2], epsilon); + assert_approx_equals(pixel[3], pixel_expected[3], epsilon); + }, {colorSpace: "display-p3"}); +}; +img.src = "support/cicp-display-p3.png"; +</script> |