1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/content/canvas/test/webgl-conformance/extra/out-of-vram.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,115 @@
1.4 +<!--
1.5 +Copyright (c) 2009 The Chromium Authors. All rights reserved.
1.6 +Use of this source code is governed by a BSD-style license that can be
1.7 +found in the LICENSE file.
1.8 +-->
1.9 +<!DOCTYPE html>
1.10 +<html>
1.11 +<head>
1.12 +<meta charset="utf-8">
1.13 +<title>WebGL Out Of VRAM Test</title>
1.14 +<link rel="stylesheet" href="../resources/js-test-style.css"/>
1.15 +<script src="../resources/desktop-gl-constants.js" type="text/javascript"></script>
1.16 +<script src="../resources/js-test-pre.js"></script>
1.17 +<script src="../conformance/resources/webgl-test.js"></script>
1.18 +<script src="../conformance/resources/webgl-test-utils.js"></script>
1.19 +</head>
1.20 +<body>
1.21 +<div id="description"></div>
1.22 +<div id="console"></div>
1.23 +<canvas id="canvas" width="2" height="2"> </canvas>
1.24 +<script>
1.25 +debug("This tests WebGL running out of vram.");
1.26 +
1.27 +debug("");
1.28 +debug("Canvas.getContext");
1.29 +
1.30 +var wtu = WebGLTestUtils;
1.31 +var canvas = document.getElementById("canvas");
1.32 +try {
1.33 + var gl = create3DContext(canvas);
1.34 +} catch(e) {
1.35 +}
1.36 +if (!gl) {
1.37 + testFailed("could not create context");
1.38 +} else {
1.39 + testPassed("context exists");
1.40 +
1.41 + var args = wtu.getUrlArguments();
1.42 +
1.43 + canvas.addEventListener('webglcontextlost', contextLost, false);
1.44 +
1.45 + function contextLost(e) {
1.46 + e.preventDefault();
1.47 + debug("***context lost***");
1.48 + }
1.49 +
1.50 + function contextRestored(e) {
1.51 + debug("***context restored***");
1.52 + }
1.53 +
1.54 + debug("");
1.55 + debug("Allocating textures.");
1.56 +
1.57 + var intervalId;
1.58 + var count = 0;
1.59 + var textureMem = 0;
1.60 + var textures = [];
1.61 + var size = 2048;
1.62 + var limit = (args.limit ? args.limit : 8192) * 1024 * 1024;
1.63 +
1.64 + debug("limit: " + InMB(limit))
1.65 +
1.66 + function InMB(v) {
1.67 + return "" + Math.floor(v / 1024 / 1024) + "MB";
1.68 + }
1.69 +
1.70 + function makeTexture() {
1.71 + if (gl.isContextLost()) {
1.72 + stop("out of memory");
1.73 + return;
1.74 + }
1.75 + ++count;
1.76 + textureMem += size * size * 4;
1.77 + if (textureMem > limit) {
1.78 + stop("reached limit");
1.79 + return;
1.80 + }
1.81 + debug ("creating texture #" + count + " mem = " + InMB(textureMem));
1.82 + var texture = gl.createTexture();
1.83 + textures.push(texture);
1.84 + gl.bindTexture(gl.TEXTURE_2D, texture);
1.85 + gl.texImage2D(gl.TEXTURE_2D,
1.86 + 0, // level
1.87 + gl.RGBA, // internalFormat
1.88 + size, // width
1.89 + size, // height
1.90 + 0, // border
1.91 + gl.RGBA, // format
1.92 + gl.UNSIGNED_BYTE, // type
1.93 + null); // data
1.94 + var err = gl.getError();
1.95 + if (err != gl.NO_ERROR) {
1.96 + stop("out of memory");
1.97 + return;
1.98 + }
1.99 + }
1.100 +
1.101 + intervalId = window.setInterval(makeTexture, 1000 / 15);
1.102 +
1.103 +}
1.104 +
1.105 +function stop(msg) {
1.106 + window.clearInterval(intervalId);
1.107 + testPassed(msg);
1.108 + finish();
1.109 +}
1.110 +
1.111 +function finish() {
1.112 + debug("");
1.113 + successfullyParsed = true;
1.114 +}
1.115 +
1.116 +</script>
1.117 +</body>
1.118 +</html>
