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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>GLSL initialized array element increment/decrement 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>
+<script src="../../js/glsl-conformance-test.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<script id="fshaderFloatArrayIncrement" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+
+out vec4 my_FragColor;
+
+void main() {
+    float A[2] = float[2](0.0, 1.0);
+    A[0]++;
+    my_FragColor = vec4(1.0 - A[0], A[0], 0.0, 1.0);
+}
+</script>
+<script id="fshaderVectorArrayIncrement" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+
+out vec4 my_FragColor;
+
+void main() {
+    vec4 V[2] = vec4[2](vec4(0.0, 2.0, 3.0, 4.0), vec4(5.0, 6.0, 7.0, 8.0));
+    V[0][0]++;
+    my_FragColor = vec4(1.0 - V[0][0], V[0][0], 0.0, 1.0);
+}
+</script>
+<script id="fshaderVectorElementIncrement" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+
+out vec4 my_FragColor;
+
+void main() {
+    vec4 v = vec4(0.0, 2.0, 3.0, 4.0);
+    v[0]++;
+    my_FragColor = vec4(1.0 - v[0], v[0], 0.0, 1.0);
+}
+</script>
+<script id="fshaderFloatArrayDecrement" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+
+out vec4 my_FragColor;
+
+void main() {
+    float A[2] = float[2](2.0, 1.0);
+    A[0]--;
+    my_FragColor = vec4(1.0 - A[0], A[0], 0.0, 1.0);
+}
+</script>
+<script id="fshaderVectorArrayDecrement" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+
+out vec4 my_FragColor;
+
+void main() {
+    vec4 V[2] = vec4[2](vec4(2.0, 2.0, 3.0, 4.0), vec4(5.0, 6.0, 7.0, 8.0));
+    V[0][0]--;
+    my_FragColor = vec4(1.0 - V[0][0], V[0][0], 0.0, 1.0);
+}
+</script>
+<script id="fshaderVectorElementDecrement" type="x-shader/x-fragment">#version 300 es
+precision mediump float;
+
+out vec4 my_FragColor;
+
+void main() {
+    vec4 v = vec4(2.0, 2.0, 3.0, 4.0);
+    v[0]--;
+    my_FragColor = vec4(1.0 - v[0], v[0], 0.0, 1.0);
+}
+</script>
+<script type="application/javascript">
+"use strict";
+description("Incrementing or decrementing elements of arrays with initializers should work.");
+
+GLSLConformanceTester.runRenderTests([
+{
+  fShaderId: 'fshaderFloatArrayIncrement',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Increment an element of a vector array'
+},
+{
+  fShaderId: 'fshaderVectorArrayIncrement',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Increment an element of a vector array'
+},
+{
+  fShaderId: 'fshaderVectorElementIncrement',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Increment an element of a vector'
+},
+{
+  fShaderId: 'fshaderFloatArrayDecrement',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Decrement an element of a vector array'
+},
+{
+  fShaderId: 'fshaderVectorArrayDecrement',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Decrement an element of a vector array'
+},
+{
+  fShaderId: 'fshaderVectorElementDecrement',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: 'Decrement an element of a vector'
+}
+], 2);
+</script>
+</body>
+</html>
+