1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
<!--
/*
** Copyright (c) 2012 The Khronos Group Inc.
**
** Permission is hereby granted, free of charge, to any person obtaining a
** copy of this software and/or associated documentation files (the
** "Materials"), to deal in the Materials without restriction, including
** without limitation the rights to use, copy, modify, merge, publish,
** distribute, sublicense, and/or sell copies of the Materials, and to
** permit persons to whom the Materials are furnished to do so, subject to
** the following conditions:
**
** The above copyright notice and this permission notice shall be included
** in all copies or substantial portions of the Materials.
**
** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.
*/
-->
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>WebGL Out Of VRAM Test</title>
<link rel="stylesheet" href="../resources/js-test-style.css"/>
<script src="../js/js-test-pre.js"></script>
<script src="../js/webgl-test-utils.js"></script>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<canvas id="canvas" width="2" height="2"> </canvas>
<script>
"use strict";
debug("This tests WebGL running out of vram.");
debug("");
debug("Canvas.getContext");
var wtu = WebGLTestUtils;
var canvas = document.getElementById("canvas");
try {
var gl = wtu.create3DContext(canvas);
} catch(e) {
}
if (!gl) {
testFailed("could not create context");
} else {
testPassed("context exists");
var args = wtu.getUrlArguments();
canvas.addEventListener('webglcontextlost', contextLost, false);
function contextLost(e) {
e.preventDefault();
debug("***context lost***");
}
function contextRestored(e) {
debug("***context restored***");
}
var program = wtu.setupTexturedQuad(gl);
gl.useProgram(program);
debug("");
debug("Allocating textures.");
var intervalId;
var count = 0;
var textureMem = 0;
var textures = [];
var size = 2048;
var limit = (args.limit ? args.limit : 8192) * 1024 * 1024;
debug("limit: " + InMB(limit))
function InMB(v) {
return "" + Math.floor(v / 1024 / 1024) + "MB";
}
function makeTexture() {
if (gl.isContextLost()) {
stop("out of memory");
return;
}
++count;
textureMem += size * size * 4;
if (textureMem > limit) {
stop("reached limit");
return;
}
debug ("creating texture #" + count + " mem = " + InMB(textureMem));
var texture = gl.createTexture();
textures.push(texture);
gl.bindTexture(gl.TEXTURE_2D, texture);
gl.texImage2D(gl.TEXTURE_2D,
0, // level
gl.RGBA, // internalFormat
size, // width
size, // height
0, // border
gl.RGBA, // format
gl.UNSIGNED_BYTE, // type
null); // data
var err = gl.getError();
if (err != gl.NO_ERROR) {
stop("got error: " + wtu.glEnumToString(gl, err));
return;
}
// use the texture
wtu.clearAndDrawUnitQuad(gl);
}
intervalId = window.setInterval(makeTexture, 1000 / 15);
}
function stop(msg) {
window.clearInterval(intervalId);
testPassed(msg);
finishTest();
}
</script>
</body>
</html>
|
