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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
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<html>
<head>
<meta charset="utf-8">
<title>GLSL sampler with no precision qualifier 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>
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<body>
<div id="description"></div>
<div id="console"></div>
<script id="vshaderSamplerNoPrecision" type="x-shader/x-vertex">#version 300 es
precision mediump float;

uniform $(samplerType) u_sampler;

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

out vec4 my_FragColor;
uniform $(samplerType) u_sampler;

void main() {
    my_FragColor = vec4(0.0);
}
</script>
<script type="application/javascript">
"use strict";
description("ESSL3 sampler with no precision qualifier should not compile.");

var wtu = WebGLTestUtils;

var fragmentShaderTemplate = wtu.getScript('fshaderSamplerNoPrecision');
var vertexShaderTemplate = wtu.getScript('vshaderSamplerNoPrecision');

// ESSL 3.00.4 section 4.5.4 types with no predefined precision.
var samplerTypes = [
    'sampler3D',
    'samplerCubeShadow',
    'sampler2DShadow',
    'sampler2DArray',
    'sampler2DArrayShadow',
    'isampler2D',
    'isampler3D',
    'isamplerCube',
    'isampler2DArray',
    'usampler2D',
    'usampler3D',
    'usamplerCube',
    'usampler2DArray'
];

var tests = [];

for (var i = 0; i < samplerTypes.length; ++i) {
    var type = samplerTypes[i];
    var vertexShaderSrc = wtu.replaceParams(vertexShaderTemplate, {'samplerType': type});
    tests.push({
        vShaderSource: vertexShaderSrc,
        vShaderSuccess: false,
        linkSuccess: false,
        passMsg: 'Vertex shader with a ' + type + ' uniform with no precision qualifier should not compile'
    });
    var fragmentShaderSrc = wtu.replaceParams(fragmentShaderTemplate, {'samplerType': type});
    tests.push({
        fShaderSource: fragmentShaderSrc,
        fShaderSuccess: false,
        linkSuccess: false,
        passMsg: 'Fragment shader with a ' + type + ' uniform with no precision qualifier should not compile'
    });
}

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