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

   1 <!DOCTYPE html>
   2 <html style="margin: 0; padding: 0;">
   3   <head>
   4 <meta charset="utf-8">
   5     <title>Simple WebGL context</title>
   6     <script src="webgl-test-utils.js"> </script>
   7 </head>
   8 <body style="margin: 0; padding: 0; overflow: hidden;">
   9     <canvas id="c"
  10         width="1680" height="1050"
  11         style="width: 256px; height: 256px;"> <!-- scaled to fit page better -->
  12     <script id="vshader" type="x-shader/x-vertex">
  13         attribute vec4 vPosition;
  14         void main()
  15         {
  16             gl_Position = vPosition;
  17         }
  18     </script>
  19
  20     <script id="fshader" type="x-shader/x-fragment">
  21         void main()
  22         {
  23             gl_FragColor = vec4(1.0,0.0,0.0,1.0);
  24         }
  25     </script>
  26
  27     <script>
  28         var wtu = WebGLTestUtils;
  29
  30         var gl = wtu.create3DContext("c", {"antialiased": false});
  31         program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]);
  32
  33         var vertexObject = gl.createBuffer();
  34         gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject);
  35         gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.75,0, -0.75,-0.75,0, 0.75,-0.75,0 ]), gl.STATIC_DRAW);
  36         gl.enableVertexAttribArray(0);
  37         gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0);
  38
  39         gl.clearColor(0.0, 0.0, 0.0, 1.0);
  40         gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
  41         gl.drawArrays(gl.TRIANGLES, 0, 3);
  42
  43         if(parent) {
  44             window.glContext = gl;
  45             parent.postMessage("Ready", "*");
  46         }
  47     </script>
  48 </body>
  49 </html>