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Use of this source code is governed by an MIT-style license that can be
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<head>
<meta charset="utf-8">
<title>Fragment shader containing loop should not crash</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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<div id="description"></div>
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<script id="vshader" type="x-shader/x-vertex">#version 300 es
precision highp float;
out vec2 v_tex_coord;
uniform mat4 matrix;

void main() {
   v_tex_coord = vec2(0.0, 0.0);
   gl_Position = vec4(0.0, 0.0, 0.0, 0.0);
}
</script>
<script id="fshader" type="x-shader/x-fragment">#version 300 es
precision highp float;

in vec2 v_tex_coord;
out vec4 out_color;

uniform sampler2D texture_1;
uniform vec2 resolution;

vec4 do_loops(vec4 z)
{
    vec4 v[16];
    for (int i = 0; i < 16; i++)
    {
        v[i] = z;
    }
    return v[1];
}

void main() {
    out_color = do_loops(vec4(0.2, 0.4, 0.6, 1.0)) - texture(texture_1, v_tex_coord);
}
</script>
<script type="application/javascript">
"use strict";
description();
const wtu = WebGLTestUtils;
const tests = [
    {
        vShaderSource: wtu.getScript('vshader'),
        fShaderSource: wtu.getScript('fshader'),
        vShaderSuccess: true,
        fShaderSuccess: true,
        linkSuccess: true,
        passMsg: 'Fragment shader containing a simple loop should compile and link'
    }
];

GLSLConformanceTester.runTests(tests, 2);
</script>
</body>
</html>
