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<head>
<meta charset="utf-8">
<title>Invariant does not leak across shaders</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>
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<body>
<div id="description"></div>
<div id="console"></div>
<script id="InvariantVertex" type="x-shader/x-vertex">
varying vec4 v_varying;
invariant v_varying;

void main()
{
    gl_Position = v_varying;
}
</script>
<script id="InvariantFragment" type="x-shader/x-fragment">
precision mediump float;
invariant varying vec4 v_varying;

void main()
{
    gl_FragColor = v_varying;
}
</script>
<script id="VertexWithVarying" type="x-shader/x-vertex">
varying vec4 v_varying;

void main() {
    gl_Position = v_varying;
}
</script>
<script type="text/javascript">
"use strict";
description("The use of the invariant qualifier in one shader must not affect other shaders.");

debug("");
debug("This is a deliberate subset of conformance/glsl/misc/shaders-with-invariance.html.");
debug("Compared with the original tests, order of the tests is different.");
debug("This test covers an ANGLE bug. See crbug.com/634813.");

GLSLConformanceTester.runTests([
  {
    vShaderId: "InvariantVertex",
    vShaderSuccess: true,
    fShaderId: "InvariantFragment",
    fShaderSuccess: true,
    linkSuccess: true,
    passMsg: "Shaders using invariant qualifier should compile and link."
  },
  {
    vShaderId: "VertexWithVarying",
    vShaderSuccess: true,
    fShaderId: "InvariantFragment",
    fShaderSuccess: true,
    linkSuccess: false,
    passMsg: "vertex shader with variant varying and fragment shader with invariant varying must fail"
  },
]);
</script>
</body>
</html>
