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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 Repeated BindAttribLocation 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>
+<canvas id="example" width="50" height="50">
+</canvas>
+<div id="description"></div>
+<div id="console"></div>
+<script id="vshader" type="x-shader/x-vertex">
+ attribute vec4 vPosition;
+ void main()
+ {
+ gl_Position = vPosition;
+ }
+</script>
+
+<script id="fshader" type="x-shader/x-fragment">
+ void main()
+ {
+ gl_FragColor = vec4(0.0,1.0,0.0,1.0);
+ }
+</script>
+
+<script>
+"use strict";
+description("Test repeated loading of programs involving bindAttribLocation calls");
+debug("Regression test for <a href='https://code.google.com/p/chromium/issues/detail?id=510637'>crbug.com/510637</a>");
+var wtu = WebGLTestUtils;
+var gl = wtu.create3DContext("example");
+var g_program;
+var g_attribLocation;
+function setup(attribIndex) {
+ var program = wtu.setupProgram(
+ gl, ['vshader', 'fshader'], ['vPosition'], [attribIndex]);
+ g_program = program;
+ g_attribLocation = attribIndex;
+ shouldBe("gl.getAttribLocation(g_program, 'vPosition')", "g_attribLocation");
+ return program;
+}
+
+var p0 = setup(0);
+var p3 = setup(3);
+var p1 = setup(1);
+// This call fails the getAttribLocation check on some drivers when
+// Chrome's program binary cache is enabled. On the affected drivers,
+// it returns the bound attribute location from the first binary
+// created. Swapping 0 and 1 above will cause it to return 1 rather
+// than 0.
+p3 = setup(3);
+
+var successfullyParsed = true;
+</script>
+<script src="../../js/js-test-post.js"></script>
+
+</body>
+</html>