Home | History | Annotate | Download | only in gpu 
      1 <html>
      2 <head>
      3 <script type="text/javascript">
      4 var canvas;
      5 var w, h;
      6 var gl;
      7 var extension;
      8 
      9 var alreadySetAutomationId = false;
     10 
     11 function testHorizontalBands() {
     12   gl.enable(gl.SCISSOR_TEST);
     13 
     14   gl.clearColor(1, 0, 0, 1);
     15   gl.scissor(0, 0, w, h/2);
     16   gl.clear(gl.COLOR_BUFFER_BIT);
     17 
     18   gl.clearColor(0, 1, 0, 1);
     19   gl.scissor(0, h/2, w, h/2);
     20   gl.clear(gl.COLOR_BUFFER_BIT);
     21 
     22   gl.disable(gl.SCISSOR_TEST);
     23 
     24   var size = w * h * 4;
     25   var array = new Uint8Array(size);
     26   gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, array);
     27 
     28   return array[0] == 255 && array[1] == 0 &&
     29       array[size - 4] == 0 && array[size - 3] == 255;
     30 }
     31 
     32 function testContextLost(e) {
     33   e.preventDefault();
     34   if (extension) {
     35     setTimeout(function() {
     36       extension.restoreContext();
     37       extension = null;
     38     }, 0);
     39   }
     40 }
     41 
     42 function testContextRestored() {
     43   gl = canvas.getContext("experimental-webgl");
     44   if (!gl || gl.isContextLost()) {
     45     // Might just be blocked because of infobar.
     46     return;
     47   }
     48   gl.clearColor(0, 0, 1, 1);
     49   gl.clear(gl.COLOR_BUFFER_BIT);
     50 
     51   var a = new Uint8Array(w * h * 4);
     52   gl.readPixels(0, 0, w, h, gl.RGBA, gl.UNSIGNED_BYTE, a);
     53 
     54   if (!alreadySetAutomationId)
     55     window.domAutomationController.setAutomationId(1);
     56   if (a[0] == 0 && a[1] == 0 && a[2] == 255)
     57     window.domAutomationController.send("SUCCESS");
     58   else
     59     window.domAutomationController.send("FAILED");
     60 }
     61 
     62 function contextLostTest(kind)
     63 {
     64   switch (kind) {
     65     case "WEBGL_lose_context": {
     66       extension = gl.getExtension("WEBKIT_WEBGL_lose_context") ||
     67                   gl.getExtension("WEBGL_lose_context");
     68       extension.loseContext();
     69       break;
     70     }
     71     case "kill":
     72       // nothing -- the browser test navigates to about:gpucrash and kills
     73       // the GPU process.
     74       break;
     75     case "kill_after_notification":
     76       // The browser test waits for notification from the page that it
     77       // has been loaded before navigating to about:gpucrash.
     78       window.domAutomationController.setAutomationId(1);
     79       alreadySetAutomationId = true;
     80       window.domAutomationController.send("LOADED");
     81       break;
     82   }
     83 }
     84 
     85 function onLoad() {
     86   canvas = document.getElementById("canvas1");
     87   w = canvas.width;
     88   h = canvas.height;
     89   if (!canvas)
     90     return;
     91   canvas.addEventListener("webglcontextlost", testContextLost, false);
     92   canvas.addEventListener("webglcontextrestored", testContextRestored, false);
     93 
     94   gl = canvas.getContext("experimental-webgl");
     95   if (!gl)
     96     return;
     97 
     98   if (!testHorizontalBands())
     99     return;
    100 
    101   var query = /query=(.*)/.exec(window.location.href);
    102   if (query)
    103     contextLostTest(query[1]);
    104 }
    105 </script>
    106 </head>
    107 <body onload="onLoad()">
    108 <canvas id="canvas1" width="16px" height="32px">
    109 </canvas>
    110 </body>
    111 </html>
    112