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| (Empty) | |
| 1 <!DOCTYPE HTML> |
| 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 |
| 6 that the baseline images are regenerated on the next run. |
| 7 --> |
| 8 |
| 9 <html> |
| 10 <head> |
| 11 <title>OffscreenCanvas 2d commit flow on worker thread: green square on white ba
ckground.</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 transferredCanvas = e.data; |
| 20 var offscreen2d = transferredCanvas.getContext("2d"); |
| 21 offscreen2d.fillStyle = "green"; |
| 22 offscreen2d.fillRect(0, 0, transferredCanvas.width, transferredCanvas.height
); |
| 23 offscreen2d.commit(); |
| 24 }; |
| 25 </script> |
| 26 <script> |
| 27 var g_swapsBeforeAck = 15; |
| 28 |
| 29 function main() |
| 30 { |
| 31 draw(); |
| 32 waitForFinish(); |
| 33 } |
| 34 |
| 35 function makeWorker(script) |
| 36 { |
| 37 var blob = new Blob([script]); |
| 38 return new Worker(URL.createObjectURL(blob)); |
| 39 } |
| 40 |
| 41 function waitForFinish() |
| 42 { |
| 43 var canvas2D = document.getElementById("c"); |
| 44 var offscreenCanvas = canvas2D.transferControlToOffscreen(); |
| 45 var worker = makeWorker(document.getElementById("myWorker").textContent); |
| 46 worker.postMessage(offscreenCanvas, [offscreenCanvas]); |
| 47 } |
| 48 </script> |
| 49 </head> |
| 50 <body onload="main()"> |
| 51 <div style="position:relative; width:350px; height:350px; background-color:white
"> |
| 52 </div> |
| 53 <div id="container" style="position:absolute; top:0px; left:0px"> |
| 54 <canvas id="c" width="320" height="320" class="nomargin"></canvas> |
| 55 </div> |
| 56 </body> |
| 57 </html> |
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Chromium Code Reviews
Issue 2359723003:
Implement OffscreenCanvas Accelerated 2D commit() (Closed)
