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+<!--
+Copyright (c) 2019 The Khronos Group Inc.
+Use of this source code is governed by an MIT-style license that can be
+found in the LICENSE.txt file.
+-->
+
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>WebGL Out Of Resources Test</title>
+<link rel="stylesheet" href="../resources/js-test-style.css"/>
+<script src="../../devtools/src/debug/webgl-debug.js"></script>
+<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>
+<canvas id="canvas2" width="2" height="2"> </canvas>
+<script>
+"use strict";
+wtu = WebGLTestUtils;
+window.onload = init;
+debug("Tests a WebGL program that tries to use all of vram.");
+
+function init() {
+ if (confirm(
+ "After clicking OK your machine may become unresponsive or crash.")) {
+ main();
+ } else {
+ debug("cancelled");
+ }
+}
+
+function main() {
+ debug("");
+ debug("Canvas.getContext");
+
+ var gl = wtu.create3DContext("canvas");
+ if (!gl) {
+ testFailed("context does not exist");
+ } else {
+ testPassed("context exists");
+
+ var program = wtu.setupColorQuad(gl);
+ gl.useProgram(program);
+
+ debug("");
+ debug("Checking for out of memory handling.");
+
+ var size = gl.getParameter(gl.MAX_RENDERBUFFER_SIZE);
+ debug("max render buffer size: " + size);
+
+ var allocateFramebuffers = true;
+ var itervalId;
+ var count = 0;
+
+ gl = WebGLDebugUtils.makeDebugContext(gl, function(err, functionName, args) {
+ assertMsg(err == gl.OUT_OF_MEMORY,
+ "correctly returns gl.OUT_OF_MEMORY when out of memory");
+ stop("got: " + wtu.glEnumToString(gl, err));
+ });
+
+ var fbos = [];
+
+ intervalId = window.setInterval(function() {
+ ++count;
+ var mem = count * size * size * 4;
+ debug("#" + count + " : memory allocated so far " + (mem / 1024 / 1024) + "MB");
+ var tex = gl.createTexture();
+ gl.bindTexture(gl.TEXTURE_2D, tex);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.NEAREST);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.NEAREST);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE);
+ gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE);
+ 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;
+ }
+ if (allocateFramebuffers) {
+ var fb = gl.createFramebuffer();
+ gl.bindFramebuffer(gl.FRAMEBUFFER, fb);
+ gl.framebufferTexture2D(
+ gl.FRAMEBUFFER,
+ gl.COLOR_ATTACHMENT0,
+ gl.TEXTURE_2D,
+ tex,
+ 0);
+ var status = gl.checkFramebufferStatus(gl.FRAMEBUFFER);
+ if (status != gl.FRAMEBUFFER_COMPLETE) {
+ stop("got: " + wtu.glEnumToString(gl, status));
+ return;
+ }
+ // use the framebuffer
+ wtu.drawFloatColorQuad(gl, [1, Math.random(), 1, 1]);
+ }
+ }, 200);
+
+ function stop(msg) {
+ debug(msg);
+ window.clearInterval(intervalId);
+ finishTest();
+ }
+ }
+}
+</script>
+</body>
+</html>