dom/canvas/test/reftest/webgl-clear-test.html

   1 <!DOCTYPE html>
   2 <html class="reftest-wait">
   3 <head>
   4 <meta charset="UTF-8">
   5
   6 <script type="text/javascript" src="webgl-utils.js"></script>
   7 <script type="text/javascript">
   8 /* Clear Test
   9  *
  10  * Clear the canvas to green to test that we get pixels to the screen.
  11  */
  12
  13 "use strict";
  14
  15 function renderGL(gl) {
  16   gl.clearColor(0.0, 1.0, 0.0, 1.0);
  17   gl.clear(gl.COLOR_BUFFER_BIT);
  18   gl.finish();
  19 }
  20
  21 function renderFailure(canvas) {
  22   // This will also trigger RAF for us.
  23   var context = canvas.getContext("2d");
  24   context.fillText('WebGL failed.', 64, 64);
  25 }
  26
  27 function runTest() {
  28   var canvas = document.getElementById("canvas");
  29   var gl = initGL(canvas);
  30
  31   if (gl)
  32     renderGL(gl);
  33   else
  34     renderFailure(canvas);
  35
  36   waitForComposite(testComplete);
  37 }
  38
  39 function testComplete() {
  40   document.documentElement.removeAttribute("class");
  41 }
  42
  43 </script>
  44 </head>
  45
  46 <body onload="rAF(runTest);">
  47   <canvas id="canvas" width="256" height="256"></canvas>
  48 </body>
  49
  50 </html>