context-resize-changes-buffer-binding-bug.html

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<meta charset="utf-8">

<title>WebGL2 Context Resize Bug 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>

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<div id="description"></div>

<div id="console"></div>

<canvas id="test"></canvas>

<script>

"use strict";

description("This test verifies canvas resize does not affect PIXEL_UNPACK_BUFFER binding.");

var wtu = WebGLTestUtils;

var canvas = document.getElementById("test");

var gl = wtu.create3DContext(canvas, null, 2);

if (!gl) {

  testFailed("context does not exist");

} else {

  testPassed("context exists");

  var texture1= gl.createTexture();

  gl.bindTexture(gl.TEXTURE_3D, texture1);

  var buffer0= gl.createBuffer();

  gl.bindBuffer(gl.PIXEL_UNPACK_BUFFER, buffer0);

  canvas.width = 682;

  // Resizing canvas incorrectly cleared the PIXEL_UNPACK_BUFFER binding to 0

  // and caused a crash from the following line in Chrome. crbug.com/673929.

  gl.texImage3D(gl.TEXTURE_3D, 1, gl.R8,  225,664 , 143, 0,

      gl.LUMINANCE_ALPHA, gl.UNSIGNED_SHORT_4_4_4_4, 0x41414141);

  testPassed("no crash from texImage3D");

debug("");

var successfullyParsed = true;

</script>

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