dom/canvas/test/webgl-conf/checkout/conformance/buffers/buffer-data-array-buffer-delete.html

   1 <!--
   2 Copyright (c) 2019 The Khronos Group Inc.
   3 Use of this source code is governed by an MIT-style license that can be
   4 found in the LICENSE.txt file.
   5 -->
   6
   7 <!DOCTYPE html>
   8 <html>
   9 <head>
  10 <meta charset="utf-8">
  11 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
  12 <script src="../../js/js-test-pre.js"></script>
  13 <script src="../../js/webgl-test-utils.js"></script>
  14 </head>
  15 <body>
  16 <div id="description"></div>
  17 <div id="console"></div>
  18
  19 <script>
  20 "use strict";
  21 description("Test ARRAY_BUFFER deletion when a vertex attrib array with location != 0 is pointing to it and preserveDrawingBuffer is true.");
  22
  23 var canvas = document.createElement('canvas');
  24 document.body.appendChild(canvas);
  25
  26 canvas.addEventListener(
  27     "webglcontextlost",
  28     function(event) {
  29         testFailed("Context lost");
  30         event.preventDefault();
  31     },
  32     false);
  33
  34 var wtu = WebGLTestUtils;
  35 var gl = wtu.create3DContext(canvas, {preserveDrawingBuffer: true});
  36
  37 if (!gl) {
  38     testFailed("context does not exist");
  39     finishTest();
  40 } else {
  41     var array = new Float32Array([0]);
  42     var buf = gl.createBuffer();
  43     gl.bindBuffer(gl.ARRAY_BUFFER, buf);
  44     gl.bufferData(gl.ARRAY_BUFFER, array, gl.STATIC_DRAW);
  45     wtu.glErrorShouldBe(gl, gl.NO_ERROR);
  46
  47     var attribLocation = 1;
  48     gl.enableVertexAttribArray(attribLocation);
  49     gl.vertexAttribPointer(attribLocation, 1, gl.FLOAT, false, 0, 0);
  50
  51     gl.deleteBuffer(buf);
  52
  53     setTimeout(function() {
  54         // Wait for possible context loss
  55         finishTest();
  56     }, 2000);
  57 }
  58
  59 var successfullyParsed = true;
  60 </script>
  61
  62 </body>
  63 </html>