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<head>
<meta charset="utf-8">
<title>Positive tests for the use of the invariant qualifier and pragma</title>
<link rel="stylesheet" href="../../resources/js-test-style.css"/>
<link rel="stylesheet" href="../../resources/glsl-feature-tests.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="vertexShaderInvariant" type="text/something-not-javascript">#version 300 es
precision mediump float;
invariant out vec4 v_varying;

void main()
{
    v_varying = vec4(0.0, 0.0, 0.0, 1.0);
    gl_Position = v_varying;
}
</script>
<script id="vertexShaderSeparateInvariant" type="text/something-not-javascript">#version 300 es
precision mediump float;
out vec4 v_varying;
invariant v_varying;

void main()
{
    v_varying = vec4(0.0, 0.0, 0.0, 1.0);
    gl_Position = v_varying;
}
</script>
<script id="vertexShaderGlobalInvariant" type="text/something-not-javascript">#version 300 es
#pragma STDGL invariant(all)
precision mediump float;
out vec4 v_varying;

void main()
{
    v_varying = vec4(0.0, 0.0, 0.0, 1.0);
    gl_Position = v_varying;
}
</script>
<script id="fragmentShaderVariant" type="text/something-not-javascript">#version 300 es
precision mediump float;

in vec4 v_varying;
out vec4 my_color;

void main()
{
    my_color = v_varying;
}
</script>
<script type="application/javascript">
"use strict";
description();
GLSLConformanceTester.runTests([
  {
    vShaderId: "vertexShaderInvariant",
    vShaderSuccess: true,
    fShaderId: "fragmentShaderVariant",
    fShaderSuccess: true,
    linkSuccess: true,
    passMsg: "vertex shader with invariant varying and fragment shader with variant varying must succeed",
  },
  {
    vShaderId: "vertexShaderGlobalInvariant",
    vShaderSuccess: true,
    fShaderId: "fragmentShaderVariant",
    fShaderSuccess: true,
    linkSuccess: true,
    passMsg: "vertex shader with invariant (global setting) varying and fragment shader with variant varying must succeed",
  },
  {
    vShaderId: "vertexShaderSeparateInvariant",
    vShaderSuccess: true,
    fShaderId: "fragmentShaderVariant",
    fShaderSuccess: true,
    linkSuccess: true,
    passMsg: "vertex shader with invariant (separately set) varying and fragment shader with variant varying must succeed",
  },
], 2);
</script>
</body>
</html>
