third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-ImageBitmap-worker-to-worker.html - Issue 2321063002: Reland of Allow canvases to be GPU-accelerated in Workers

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Side by Side Diff: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-ImageBitmap-worker-to-worker.html

Issue 2321063002: Reland of Allow canvases to be GPU-accelerated in Workers (Closed)

Patch Set: Created 4 years, 3 months ago

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	1 <!DOCTYPE html>

	2 <script src="../../resources/testharness.js"></script>

	3 <script src="../../resources/testharnessreport.js"></script>

	4 <script>

	5 var t = async_test("Test the case where an ImageBitmap produced on a worker is c onsumed on another worker");

	6

	7 var worker1 = new Worker('OffscreenCanvas-ImageBitmap-worker-to-worker-1.js');

	8 var worker2 = new Worker('OffscreenCanvas-ImageBitmap-worker-to-worker-2.js');

	9

	10 worker1.addEventListener('message', msg => {

	11 worker2.postMessage(msg.data, [msg.data]);

	12 });

	13

	14 worker2.addEventListener('message', t.step_func(function(msg) {

	15 var testCtx = document.createElement('canvas').getContext('2d');

	16 testCtx.drawImage(msg.data, 0, 0);

	17 var pixelData = testCtx.getImageData(0, 0, 1, 1);

	18 assert_equals(pixelData.data[0], 0, "red");

	19 assert_equals(pixelData.data[1], 255, "green");

	20 assert_equals(pixelData.data[2], 0, "blue");

	21 assert_equals(pixelData.data[3], 255, "alpha");

	22 t.done();

	23 }));

	24

	25 worker1.postMessage("go");

	26

	27 </script>

	28

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