| <html> |
| <head> |
| <script type="text/javascript"> |
| var gl; |
| // For some reason, when running this test in automated fashion, it |
| // triggers the bug reliably if the first frame with back-to-back |
| // events happens a certain number of frames into the test execution. |
| var numFrames = 202; |
| var intensity = 255; |
| var contextWasLost = false; |
| |
| function contextLostHandler(e) { |
| contextWasLost = true; |
| } |
| |
| function draw() { |
| if (--intensity == 0) { |
| intensity = 255; |
| } |
| |
| gl.clearColor(intensity / 255.0, 0, 0, 1); |
| gl.clear(gl.COLOR_BUFFER_BIT); |
| |
| if (numFrames % 2 == 0) { |
| // Toggle the state of the drop-down every other frame. Every now |
| // and then, dispatch two events back to back. This really seems to |
| // trigger the bug. |
| var maxIteration = 1; |
| if (numFrames % 6 == 0) { |
| maxIteration = 2; |
| } |
| for (var ii = 0; ii < maxIteration; ++ii) { |
| var e = document.createEvent('MouseEvent'); |
| e.initMouseEvent('mousedown', true, true, window); |
| var s = document.getElementById('dropdown'); |
| s.dispatchEvent(e); |
| } |
| } |
| |
| if (--numFrames > 0) { |
| requestAnimationFrame(draw); |
| } else { |
| if (contextWasLost) { |
| window.domAutomationController.send("FAILED"); |
| } else { |
| window.domAutomationController.send("SUCCESS"); |
| } |
| } |
| } |
| |
| function onLoad() { |
| window.domAutomationController.send("LOADED"); |
| |
| var canvas = document.getElementById("canvas1"); |
| if (!canvas) |
| return; |
| canvas.addEventListener("webglcontextlost", contextLostHandler, false); |
| |
| gl = canvas.getContext("webgl"); |
| if (!gl) |
| return; |
| |
| requestAnimationFrame(draw); |
| } |
| </script> |
| </head> |
| <body onload="onLoad()"> |
| <select id="dropdown"> |
| <option value="option1">option1</option> |
| <option value="option2">option2</option> |
| <option value="option3">option3</option> |
| <option value="option4">option4</option> |
| </select> |
| <canvas id="canvas1" width="32px" height="32px"> |
| </canvas> |
| </body> |
| </html> |
