buffer-data-array-buffer-delete.html

Enable keyboard shortcuts

<!--

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">

<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>

<script>

"use strict";

description("Test ARRAY_BUFFER deletion when a vertex attrib array with location != 0 is pointing to it and preserveDrawingBuffer is true.");

var canvas = document.createElement('canvas');

document.body.appendChild(canvas);

canvas.addEventListener(

    "webglcontextlost",

    function(event) {

        testFailed("Context lost");

        event.preventDefault();

},

    false);

var wtu = WebGLTestUtils;

var gl = wtu.create3DContext(canvas, {preserveDrawingBuffer: true});

if (!gl) {

    testFailed("context does not exist");

    finishTest();

} else {

    var array = new Float32Array([0]);

    var buf = gl.createBuffer();

    gl.bindBuffer(gl.ARRAY_BUFFER, buf);

    gl.bufferData(gl.ARRAY_BUFFER, array, gl.STATIC_DRAW);

    wtu.glErrorShouldBe(gl, gl.NO_ERROR);

    var attribLocation = 1;

    gl.enableVertexAttribArray(attribLocation);

    gl.vertexAttribPointer(attribLocation, 1, gl.FLOAT, false, 0, 0);

    gl.deleteBuffer(buf);

    setTimeout(function() {

        // Wait for possible context loss

        finishTest();

    }, 2000);

var successfullyParsed = true;

</script>

</body>

</html>