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Issue 2588053003:
Make OffscreenCanvas resizable (Closed)
| OLD | NEW |
|---|---|
| (Empty) | |
| 1 <!DOCTYPE HTML> | |
|
Ken Russell (switch to Gerrit)
2016/12/20 06:01:24
Similar comment: ...resize_on_worker?
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| 2 | |
| 3 <!-- READ BEFORE UPDATING: | |
| 4 If this test is updated make sure to increment the "revision" value of the | |
| 5 associated test in content/test/gpu/page_sets/pixel_tests.py. This will ensure | |
|
Ken Russell (switch to Gerrit)
2016/12/20 06:01:24
Same fix here.
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| 6 that the baseline images are regenerated on the next run. | |
| 7 --> | |
| 8 | |
| 9 <html> | |
| 10 <head> | |
| 11 <title>OffscreenCanvas 2d commit flow with resizing: 100X200 canvas as a result. </title> | |
| 12 <style type="text/css"> | |
| 13 .nomargin { | |
| 14 margin: 0px auto; | |
| 15 } | |
| 16 </style> | |
| 17 <script id="myWorker" type="text/worker"> | |
| 18 self.onmessage = function(e) { | |
| 19 var transfered = e.data; | |
| 20 var gl = transfered.getContext('webgl'); | |
| 21 gl.clearColor(0, 1, 0, 1); | |
| 22 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 23 gl.commit(); | |
| 24 | |
| 25 // Resize offscreenCanvas from 150X150 to 100X200. | |
| 26 transfered.width = 100; | |
| 27 transfered.height = 200; | |
| 28 gl.clearColor(0, 0, 1, 1); | |
| 29 gl.clear(gl.COLOR_BUFFER_BIT); | |
| 30 gl.commit(); | |
| 31 | |
| 32 self.postMessage(""); | |
| 33 }; | |
| 34 </script> | |
| 35 <script> | |
| 36 var g_swapsBeforeAck = 15; | |
| 37 | |
| 38 function makeWorker(script) | |
| 39 { | |
| 40 var blob = new Blob([script]); | |
| 41 return new Worker(URL.createObjectURL(blob)); | |
| 42 } | |
| 43 | |
| 44 function waitForFinish() | |
| 45 { | |
| 46 if (g_swapsBeforeAck == 0) { | |
| 47 domAutomationController.setAutomationId(1); | |
| 48 domAutomationController.send("SUCCESS"); | |
| 49 } else { | |
| 50 g_swapsBeforeAck--; | |
| 51 document.getElementById('container').style.zIndex = g_swapsBeforeAck + 1; | |
| 52 window.webkitRequestAnimationFrame(waitForFinish); | |
| 53 } | |
| 54 } | |
| 55 | |
| 56 function main() | |
| 57 { | |
| 58 var canvas2D = document.getElementById("c"); | |
| 59 var offscreenCanvas = canvas2D.transferControlToOffscreen(); | |
| 60 var worker = makeWorker(document.getElementById("myWorker").textContent); | |
| 61 worker.postMessage(offscreenCanvas, [offscreenCanvas]); | |
| 62 worker.onmessage = function (e) { | |
|
Ken Russell (switch to Gerrit)
2016/12/20 06:01:24
Same race question here.
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| 63 waitForFinish(); | |
| 64 }; | |
| 65 } | |
| 66 </script> | |
| 67 </head> | |
| 68 <body onload="main()"> | |
| 69 <div style="position:relative; width:200px; height:200px; background-color:white "> | |
| 70 </div> | |
| 71 <div id="container" style="position:absolute; top:0px; left:0px"> | |
| 72 <canvas id="c" width="150" height="150" class="nomargin"></canvas> | |
| 73 </div> | |
| 74 </body> | |
| 75 </html> | |
| OLD | NEW |
