| <!DOCTYPE HTML> |
| |
| <!-- READ BEFORE UPDATING: |
| If this test is updated make sure to increment the "revision" value of the |
| associated test in content/test/gpu/page_sets/pixel_tests.py. This will ensure |
| that the baseline images are regenerated on the next run. |
| --> |
| |
| <html> |
| <head> |
| <title>OffscreenCanvas commit flow on worker thread: red square on white background.</title> |
| <style type="text/css"> |
| .nomargin { |
| margin: 0px auto; |
| } |
| </style> |
| <script id="myWorker" type="text/worker"> |
| self.onmessage = function(e) { |
| var transferredOffscreenCanvas = e.data; |
| var gl = transferredOffscreenCanvas.getContext("webgl"); |
| gl.clearColor(1.0, 0.0, 0.0, 1.0); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| gl.commit(); |
| }; |
| </script> |
| <script> |
| var g_swapsBeforeAck = 15; |
| |
| function makeWorker(script) { |
| var blob = new Blob([script]); |
| return new Worker(URL.createObjectURL(blob)); |
| } |
| |
| function main() |
| { |
| draw(); |
| waitForFinish(); |
| } |
| |
| function draw() |
| { |
| var canvas = document.getElementById("c"); |
| var offscreenCanvas = canvas.transferControlToOffscreen(); |
| var worker = makeWorker(document.getElementById("myWorker").textContent); |
| worker.postMessage(offscreenCanvas, [offscreenCanvas]); |
| } |
| |
| function waitForFinish() |
| { |
| if (g_swapsBeforeAck == 0) { |
| domAutomationController.setAutomationId(1); |
| domAutomationController.send("SUCCESS"); |
| } else { |
| g_swapsBeforeAck--; |
| document.getElementById('container').style.zIndex = g_swapsBeforeAck + 1; |
| window.webkitRequestAnimationFrame(waitForFinish); |
| } |
| } |
| </script> |
| </head> |
| <body onload="main()"> |
| <div style="position:relative; width:200px; height:200px; background-color:white"> |
| </div> |
| <div id="container" style="position:absolute; top:0px; left:0px"> |
| <canvas id="c" width="200" height="200" class="nomargin"></canvas> |
| </div> |
| </body> |
| </html> |
