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comparison: content/canvas/test/webgl-conformance/extra/out-of-vram.html
content/canvas/test/webgl-conformance/extra/out-of-vram.html
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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"></script> | |
| 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> |
