1 files changed, 49 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance2/context/context-resize-changes-buffer-binding-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance2/context/context-resize-changes-buffer-binding-bug.html
new file mode 100644
index 0000000000..e6682295a4
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance2/context/context-resize-changes-buffer-binding-bug.html
@@ -0,0 +1,49 @@
+<!--
+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>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>
+</head>
+<body>
+<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>
+<script src="../../js/js-test-post.js"></script>
+
+</body>
+</html>