Helmut Januschka
3c8dc3b821
Automatic update from web-platform-tests Add JPEG XL canvas reftest coverage Convert the canvas decode paths test to a PNG-backed reftest and add a WebGPU copyExternalImageToTexture case. Bug: 484065185 Change-Id: I6f9153f24fb550848f127e0da9847a1c5c3e3cd9 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/7666126 Commit-Queue: Helmut Januschka <helmut@januschka.com> Reviewed-by: Philip Jägenstedt <foolip@chromium.org> Cr-Commit-Position: refs/heads/main@{#1614800} -- wpt-commits: d75b4f943ae538aa22631dfbbc57fb109a3e8c09 wpt-pr: 59224
100 lines
2.8 KiB
HTML
100 lines
2.8 KiB
HTML
<!DOCTYPE html>
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<title>JPEG XL integration: canvas WebGPU decode path</title>
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<link rel="help" href="https://github.com/web-platform-tests/interop-jpegxl">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script>
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async function loadImage(src) {
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const image = new Image();
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await new Promise((resolve, reject) => {
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image.onload = resolve;
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image.onerror = () => reject(new Error(`image load failed: ${src}`));
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image.src = src;
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});
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return image;
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}
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function sampleCenterPixelWith2d(image) {
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const canvas = document.createElement('canvas');
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canvas.width = 3;
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canvas.height = 3;
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const ctx = canvas.getContext('2d');
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assert_true(!!ctx, '2D context available');
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ctx.drawImage(image, 0, 0);
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return ctx.getImageData(1, 1, 1, 1).data;
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}
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function assertPixelsApproxEqual(actual, expected, tolerance, messagePrefix) {
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for (let i = 0; i < 4; ++i) {
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assert_approx_equals(
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actual[i], expected[i], tolerance, `${messagePrefix} channel ${i}`);
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}
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}
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async function sampleCenterPixelWithWebGPU(image) {
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if (!('gpu' in navigator)) {
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return null;
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}
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const adapter = await navigator.gpu.requestAdapter();
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if (!adapter) {
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return null;
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}
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const device = await adapter.requestDevice();
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const width = image.naturalWidth || image.width;
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const height = image.naturalHeight || image.height;
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assert_greater_than(width, 0);
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assert_greater_than(height, 0);
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const texture = device.createTexture({
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size: {width, height, depthOrArrayLayers: 1},
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format: 'rgba8unorm',
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usage: GPUTextureUsage.COPY_DST | GPUTextureUsage.COPY_SRC,
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});
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device.queue.copyExternalImageToTexture(
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{source: image},
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{texture},
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{width, height, depthOrArrayLayers: 1});
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const buffer = device.createBuffer({
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size: 4,
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usage: GPUBufferUsage.COPY_DST | GPUBufferUsage.MAP_READ,
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});
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const encoder = device.createCommandEncoder();
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encoder.copyTextureToBuffer(
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{texture, origin: {x: 1, y: 1, z: 0}},
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{buffer},
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{width: 1, height: 1, depthOrArrayLayers: 1});
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device.queue.submit([encoder.finish()]);
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await buffer.mapAsync(GPUMapMode.READ);
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const pixel = new Uint8Array(buffer.getMappedRange()).slice(0, 4);
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buffer.unmap();
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buffer.destroy();
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texture.destroy();
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return pixel;
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}
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promise_test(async () => {
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const [jxlImage, pngImage] = await Promise.all([
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loadImage('resources/3x3_srgb_lossless.jxl'),
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loadImage('resources/3x3_srgb_lossless.png'),
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]);
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const actual = await sampleCenterPixelWithWebGPU(jxlImage);
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if (!actual) {
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return;
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}
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const expected = sampleCenterPixelWith2d(pngImage);
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assertPixelsApproxEqual(actual, expected, 1, 'WebGPU copyExternalImageToTexture');
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}, 'WebGPU copyExternalImageToTexture path with JPEG XL image.');
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</script>
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