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1 <!DOCTYPE> | |
2 <script src="../../resources/testharness.js"></script> | |
3 <script src="../../resources/testharnessreport.js"></script> | |
4 <script id="myWorker1" type="text/worker"> | |
5 self.onmessage = function(e) { | |
6 var offscreenCanvas = e.data; | |
7 var offscreen2d = offscreenCanvas.getContext("2d"); | |
8 offscreen2d.commit(); | |
9 self.postMessage("worker1 done"); | |
10 }; | |
11 </script> | |
12 <script id="myWorker2" type="text/worker"> | |
Justin Novosad
2016/11/15 19:44:55
No need for two identical worker scripts. You shou
xidachen
2016/11/15 19:49:02
Done.
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13 self.onmessage = function(e) { | |
14 var offscreenCanvas = e.data; | |
15 var offscreen2d = offscreenCanvas.getContext("2d"); | |
16 offscreen2d.commit(); | |
17 self.postMessage("worker2 done"); | |
18 }; | |
19 </script> | |
20 <script> | |
21 function makeWorker(script) { | |
22 var blob = new Blob([script]); | |
23 return new Worker(URL.createObjectURL(blob)); | |
24 } | |
25 | |
26 // Regression test for crbug.com/663916 | |
27 async_test(function(t) { | |
28 var canvas1 = document.createElement('canvas'); | |
29 canvas1.width = canvas1.height = 10; | |
30 var offscreenCanvas1 = canvas1.transferControlToOffscreen(); | |
31 | |
32 var canvas2 = document.createElement('canvas'); | |
33 canvas2.width = canvas2.height = 10; | |
34 var offscreenCanvas2 = canvas2.transferControlToOffscreen(); | |
35 | |
36 var worker1 = makeWorker(document.getElementById("myWorker1").textContent); | |
37 var worker2 = makeWorker(document.getElementById("myWorker2").textContent); | |
38 var returnedWorkerCounter = 0; | |
39 worker1.onmessage = function (e) { | |
40 returnedWorkerCounter++; | |
41 if (returnedWorkerCounter == 2) | |
42 t.done(); | |
43 }; | |
44 worker2.onmessage = function (e) { | |
45 returnedWorkerCounter++; | |
46 if (returnedWorkerCounter == 2) | |
47 t.done(); | |
48 }; | |
49 worker1.postMessage(offscreenCanvas1, [offscreenCanvas1]); | |
50 worker2.postMessage(offscreenCanvas2, [offscreenCanvas2]); | |
51 }, "Calling OffscreenCanvas.commit() from two workers should not crash."); | |
52 | |
53 </script> | |
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