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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>Negative tests for writting to a shader input with interpolation qualifier</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>
</head>
<body>
<div id="description"></div>
<div id="console"></div>
<!--
According to ESSL 3.00.6 section 4.3.4:
"Variables declared as in or centroid in may not be written to during shader execution.",
these tests ensure that a compile error is generated when using a shader input with interpolation qualifier as l-value.
-->
<script type="application/javascript">
"use strict";
description();
var vertexShaderTemplate = [
'#version 300 es',
'$(InterpolationQualifier) out float v_float_varying;',
'void main()',
'{',
' v_float_varying = 1.0;',
' gl_Position = vec4(0.0, 0.0, 0.0, 1.0);',
'}'
].join('\n');
var fragmentShaderTemplate = [
'#version 300 es',
'precision mediump float;',
'$(InterpolationQualifier) in float v_float_varying;',
'out vec4 my_color;',
'void main()',
'{',
' v_float_varying = 1.0;',
' my_color = vec4(1.0, 0.0, 0.0, v_float_varying);',
'}'
].join('\n');
var errorMessageTemplate = "Writting to shader inputs with '$(InterpolationQualifier)' qualifier must fail";
var testDataList = [
{
InterpolationQualifier: 'flat'
},
{
InterpolationQualifier: 'smooth'
},
{
InterpolationQualifier: 'centroid'
}
];
var wtu = WebGLTestUtils;
var tests = [];
for (var i = 0; i < testDataList.length; ++i) {
tests.push({
vShaderSource: wtu.replaceParams(vertexShaderTemplate, testDataList[i]),
vShaderSuccess: true,
fShaderSource: wtu.replaceParams(fragmentShaderTemplate, testDataList[i]),
fShaderSuccess: false,
linkSuccess: false,
passMsg: wtu.replaceParams(errorMessageTemplate, testDataList[i])
});
}
GLSLConformanceTester.runTests(tests, 2);
</script>
</body>
</html>
|
