content/canvas/test/webgl-conformance/extra/out-of-vram.html@6474c204b198 (annotated)
content/canvas/test/webgl-conformance/extra/out-of-vram.html
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | <!-- |
| michael@0 | 2 | Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| michael@0 | 3 | Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 4 | found in the LICENSE file. |
| michael@0 | 5 | --> |
| michael@0 | 6 | <!DOCTYPE html> |
| michael@0 | 7 | <html> |
| michael@0 | 8 | <head> |
| michael@0 | 9 | <meta charset="utf-8"> |
| michael@0 | 10 | <title>WebGL Out Of VRAM Test</title> |
| michael@0 | 11 | <link rel="stylesheet" href="../resources/js-test-style.css"/> |
| michael@0 | 12 | <script src="../resources/desktop-gl-constants.js" type="text/javascript"></script> |
| michael@0 | 13 | <script src="../resources/js-test-pre.js"></script> |
| michael@0 | 14 | <script src="../conformance/resources/webgl-test.js"></script> |
| michael@0 | 15 | <script src="../conformance/resources/webgl-test-utils.js"></script> |
| michael@0 | 16 | </head> |
| michael@0 | 17 | <body> |
| michael@0 | 18 | <div id="description"></div> |
| michael@0 | 19 | <div id="console"></div> |
| michael@0 | 20 | <canvas id="canvas" width="2" height="2"> </canvas> |
| michael@0 | 21 | <script> |
| michael@0 | 22 | debug("This tests WebGL running out of vram."); |
| michael@0 | 23 | |
| michael@0 | 24 | debug(""); |
| michael@0 | 25 | debug("Canvas.getContext"); |
| michael@0 | 26 | |
| michael@0 | 27 | var wtu = WebGLTestUtils; |
| michael@0 | 28 | var canvas = document.getElementById("canvas"); |
| michael@0 | 29 | try { |
| michael@0 | 30 | var gl = create3DContext(canvas); |
| michael@0 | 31 | } catch(e) { |
| michael@0 | 32 | } |
| michael@0 | 33 | if (!gl) { |
| michael@0 | 34 | testFailed("could not create context"); |
| michael@0 | 35 | } else { |
| michael@0 | 36 | testPassed("context exists"); |
| michael@0 | 37 | |
| michael@0 | 38 | var args = wtu.getUrlArguments(); |
| michael@0 | 39 | |
| michael@0 | 40 | canvas.addEventListener('webglcontextlost', contextLost, false); |
| michael@0 | 41 | |
| michael@0 | 42 | function contextLost(e) { |
| michael@0 | 43 | e.preventDefault(); |
| michael@0 | 44 | debug("***context lost***"); |
| michael@0 | 45 | } |
| michael@0 | 46 | |
| michael@0 | 47 | function contextRestored(e) { |
| michael@0 | 48 | debug("***context restored***"); |
| michael@0 | 49 | } |
| michael@0 | 50 | |
| michael@0 | 51 | debug(""); |
| michael@0 | 52 | debug("Allocating textures."); |
| michael@0 | 53 | |
| michael@0 | 54 | var intervalId; |
| michael@0 | 55 | var count = 0; |
| michael@0 | 56 | var textureMem = 0; |
| michael@0 | 57 | var textures = []; |
| michael@0 | 58 | var size = 2048; |
| michael@0 | 59 | var limit = (args.limit ? args.limit : 8192) * 1024 * 1024; |
| michael@0 | 60 | |
| michael@0 | 61 | debug("limit: " + InMB(limit)) |
| michael@0 | 62 | |
| michael@0 | 63 | function InMB(v) { |
| michael@0 | 64 | return "" + Math.floor(v / 1024 / 1024) + "MB"; |
| michael@0 | 65 | } |
| michael@0 | 66 | |
| michael@0 | 67 | function makeTexture() { |
| michael@0 | 68 | if (gl.isContextLost()) { |
| michael@0 | 69 | stop("out of memory"); |
| michael@0 | 70 | return; |
| michael@0 | 71 | } |
| michael@0 | 72 | ++count; |
| michael@0 | 73 | textureMem += size * size * 4; |
| michael@0 | 74 | if (textureMem > limit) { |
| michael@0 | 75 | stop("reached limit"); |
| michael@0 | 76 | return; |
| michael@0 | 77 | } |
| michael@0 | 78 | debug ("creating texture #" + count + " mem = " + InMB(textureMem)); |
| michael@0 | 79 | var texture = gl.createTexture(); |
| michael@0 | 80 | textures.push(texture); |
| michael@0 | 81 | gl.bindTexture(gl.TEXTURE_2D, texture); |
| michael@0 | 82 | gl.texImage2D(gl.TEXTURE_2D, |
| michael@0 | 83 | 0, // level |
| michael@0 | 84 | gl.RGBA, // internalFormat |
| michael@0 | 85 | size, // width |
| michael@0 | 86 | size, // height |
| michael@0 | 87 | 0, // border |
| michael@0 | 88 | gl.RGBA, // format |
| michael@0 | 89 | gl.UNSIGNED_BYTE, // type |
| michael@0 | 90 | null); // data |
| michael@0 | 91 | var err = gl.getError(); |
| michael@0 | 92 | if (err != gl.NO_ERROR) { |
| michael@0 | 93 | stop("out of memory"); |
| michael@0 | 94 | return; |
| michael@0 | 95 | } |
| michael@0 | 96 | } |
| michael@0 | 97 | |
| michael@0 | 98 | intervalId = window.setInterval(makeTexture, 1000 / 15); |
| michael@0 | 99 | |
| michael@0 | 100 | } |
| michael@0 | 101 | |
| michael@0 | 102 | function stop(msg) { |
| michael@0 | 103 | window.clearInterval(intervalId); |
| michael@0 | 104 | testPassed(msg); |
| michael@0 | 105 | finish(); |
| michael@0 | 106 | } |
| michael@0 | 107 | |
| michael@0 | 108 | function finish() { |
| michael@0 | 109 | debug(""); |
| michael@0 | 110 | successfullyParsed = true; |
| michael@0 | 111 | } |
| michael@0 | 112 | |
| michael@0 | 113 | </script> |
| michael@0 | 114 | </body> |
| michael@0 | 115 | </html> |
