third_party/WebKit/LayoutTests/fast/canvas/webgl/context-release-upon-reload.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <meta charset="utf-8">
   5 <title>WebGL Context Release Test</title>
   6 <script src="../../../resources/js-test.js"></script>
   7 <script src="resources/webgl-test.js"></script>
   8 </head>
   9 <body>
  10 <iframe id="host" style="width: 256px; height: 256px; border: 0;"></iframe>
  11 <div id="description"></div>
  12 <div id="console"></div>
  13 <script>
  14 description("This test ensures that WebGL contexts are released properly upon page reload");
  15
  16 window.jsTestIsAsync = true;
  17 if (window.testRunner) {
  18     testRunner.dumpAsText();
  19     testRunner.waitUntilDone();
  20 }
  21
  22 var host = document.getElementById("host");
  23 var testIterations = 8;
  24 var currentIteration = 0;
  25
  26 function refreshFrame() {
  27   if(currentIteration < testIterations) {
  28     currentIteration++;
  29     host.src = "resources/context-release-upon-reload-child.html";
  30   } else {
  31     testPassed("All drawing buffers were allocated at the correct size");
  32     finishTest();
  33   }
  34 }
  35
  36 function testContext() {
  37   var bail = false;
  38   var gl = host.contentWindow.glContext;
  39   if (gl == null) {
  40     bail = true;
  41     testFailed("context was not created properly");
  42   }
  43
  44   if (gl) {
  45     var err = gl.getError();
  46     if (err != gl.NO_ERROR) {
  47       bail = true;
  48       testFailed("Should be no GL error; got " + getGLErrorAsString(gl, err));
  49     }
  50   }
  51
  52   if (bail) {
  53     finishTest();
  54     return;
  55   }
  56
  57   if (gl.canvas.width != gl.drawingBufferWidth ||
  58       gl.canvas.height != gl.drawingBufferHeight) {
  59     testFailed("At iteration " + currentIteration + " of " + testIterations +
  60         ": Buffer was the wrong size: " +
  61         gl.drawingBufferWidth + "x" + gl.drawingBufferHeight);
  62     finishTest();
  63     return;
  64   } else {
  65     refreshFrame();
  66   }
  67
  68   gl = null;
  69 }
  70
  71 window.addEventListener("message", function(event) {
  72   if(event.data == "Ready") {
  73     testContext();
  74   }
  75 });
  76
  77 refreshFrame();
  78 </script>
  79
  80 </body>
  81 </html>