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| 1 <!-- |
| 2 Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 3 Use of this source code is governed by a BSD-style license that can be |
| 4 found in the LICENSE file. |
| 5 --> |
| 6 <!DOCTYPE html> |
| 7 <html> |
| 8 <head> |
| 9 <meta charset="utf-8"> |
| 10 <title>WebGL Out Of VRAM Test</title> |
| 11 <link rel="stylesheet" href="../resources/js-test-style.css"/> |
| 12 <script src="../resources/desktop-gl-constants.js" type="text/javascript"></scri
pt> |
| 13 <script src="../resources/js-test-pre.js"></script> |
| 14 <script src="../conformance/resources/webgl-test.js"></script> |
| 15 <script src="../conformance/resources/webgl-test-utils.js"></script> |
| 16 </head> |
| 17 <body> |
| 18 <div id="description"></div> |
| 19 <div id="console"></div> |
| 20 <canvas id="canvas" width="2" height="2"> </canvas> |
| 21 <script> |
| 22 debug("This tests WebGL running out of vram."); |
| 23 |
| 24 debug(""); |
| 25 debug("Canvas.getContext"); |
| 26 |
| 27 var wtu = WebGLTestUtils; |
| 28 var canvas = document.getElementById("canvas"); |
| 29 try { |
| 30 var gl = create3DContext(canvas); |
| 31 } catch(e) { |
| 32 } |
| 33 if (!gl) { |
| 34 testFailed("could not create context"); |
| 35 } else { |
| 36 testPassed("context exists"); |
| 37 |
| 38 var args = wtu.getUrlArguments(); |
| 39 |
| 40 canvas.addEventListener('webglcontextlost', contextLost, false); |
| 41 |
| 42 function contextLost(e) { |
| 43 e.preventDefault(); |
| 44 debug("***context lost***"); |
| 45 } |
| 46 |
| 47 function contextRestored(e) { |
| 48 debug("***context restored***"); |
| 49 } |
| 50 |
| 51 debug(""); |
| 52 debug("Allocating textures."); |
| 53 |
| 54 var intervalId; |
| 55 var count = 0; |
| 56 var textureMem = 0; |
| 57 var textures = []; |
| 58 var size = 2048; |
| 59 var limit = (args.limit ? args.limit : 8192) * 1024 * 1024; |
| 60 |
| 61 debug("limit: " + InMB(limit)) |
| 62 |
| 63 function InMB(v) { |
| 64 return "" + Math.floor(v / 1024 / 1024) + "MB"; |
| 65 } |
| 66 |
| 67 function makeTexture() { |
| 68 if (gl.isContextLost()) { |
| 69 stop("out of memory"); |
| 70 return; |
| 71 } |
| 72 ++count; |
| 73 textureMem += size * size * 4; |
| 74 if (textureMem > limit) { |
| 75 stop("reached limit"); |
| 76 return; |
| 77 } |
| 78 debug ("creating texture #" + count + " mem = " + InMB(textureMem)); |
| 79 var texture = gl.createTexture(); |
| 80 textures.push(texture); |
| 81 gl.bindTexture(gl.TEXTURE_2D, texture); |
| 82 gl.texImage2D(gl.TEXTURE_2D, |
| 83 0, // level |
| 84 gl.RGBA, // internalFormat |
| 85 size, // width |
| 86 size, // height |
| 87 0, // border |
| 88 gl.RGBA, // format |
| 89 gl.UNSIGNED_BYTE, // type |
| 90 null); // data |
| 91 var err = gl.getError(); |
| 92 if (err != gl.NO_ERROR) { |
| 93 stop("out of memory"); |
| 94 return; |
| 95 } |
| 96 } |
| 97 |
| 98 intervalId = window.setInterval(makeTexture, 1000 / 15); |
| 99 |
| 100 } |
| 101 |
| 102 function stop(msg) { |
| 103 window.clearInterval(intervalId); |
| 104 testPassed(msg); |
| 105 finish(); |
| 106 } |
| 107 |
| 108 function finish() { |
| 109 debug(""); |
| 110 successfullyParsed = true; |
| 111 } |
| 112 |
| 113 </script> |
| 114 </body> |
| 115 </html> |
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Chromium Code Reviews
Issue 8342021:
Add webgl conformance tests r15841. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/