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input-with-interpotaion-as-lvalue.html (2329B)

      1 <!--
      2 Copyright (c) 2019 The Khronos Group Inc.
      3 Use of this source code is governed by an MIT-style license that can be
      4 found in the LICENSE.txt file.
      5 -->
      6 
      7 <!DOCTYPE html>
      8 <html>
      9 <head>
     10 <meta charset="utf-8">
     11 <title>Negative tests for writting to a shader input with interpolation qualifier</title>
     12 <link rel="stylesheet" href="../../resources/js-test-style.css"/>
     13 <link rel="stylesheet" href="../../resources/glsl-feature-tests.css"/>
     14 <script src="../../js/js-test-pre.js"></script>
     15 <script src="../../js/webgl-test-utils.js"></script>
     16 <script src="../../js/glsl-conformance-test.js"></script>
     17 </head>
     18 <body>
     19 <div id="description"></div>
     20 <div id="console"></div>
     21 <!--
     22 According to ESSL 3.00.6 section 4.3.4:
     23 "Variables declared as in or centroid in may not be written to during shader execution.",
     24 these tests ensure that a compile error is generated when using a shader input with interpolation qualifier as l-value.
     25 -->
     26 <script type="application/javascript">
     27 "use strict";
     28 description();
     29 
     30 var vertexShaderTemplate = [
     31    '#version 300 es',
     32    '$(InterpolationQualifier) out float v_float_varying;',
     33    'void main()',
     34    '{',
     35    '    v_float_varying = 1.0;',
     36    '    gl_Position = vec4(0.0, 0.0, 0.0, 1.0);',
     37    '}'
     38 ].join('\n');
     39 
     40 var fragmentShaderTemplate = [
     41    '#version 300 es',
     42    'precision mediump float;',
     43    '$(InterpolationQualifier) in float v_float_varying;',
     44    'out vec4 my_color;',
     45    'void main()',
     46    '{',
     47    '    v_float_varying = 1.0;',
     48    '    my_color = vec4(1.0, 0.0, 0.0, v_float_varying);',
     49    '}'
     50 ].join('\n');
     51 
     52 var errorMessageTemplate = "Writting to shader inputs with '$(InterpolationQualifier)' qualifier must fail";
     53 
     54 var testDataList = [
     55 {
     56    InterpolationQualifier: 'flat'
     57 },
     58 {
     59    InterpolationQualifier: 'smooth'
     60 },
     61 {
     62    InterpolationQualifier: 'centroid'
     63 }
     64 ];
     65 
     66 var wtu = WebGLTestUtils;
     67 
     68 var tests = [];
     69 for (var i = 0; i < testDataList.length; ++i) {
     70    tests.push({
     71        vShaderSource: wtu.replaceParams(vertexShaderTemplate, testDataList[i]),
     72        vShaderSuccess: true,
     73        fShaderSource: wtu.replaceParams(fragmentShaderTemplate, testDataList[i]),
     74        fShaderSuccess: false,
     75        linkSuccess: false,
     76        passMsg: wtu.replaceParams(errorMessageTemplate, testDataList[i])
     77    });
     78 }
     79 
     80 GLSLConformanceTester.runTests(tests, 2);
     81 </script>
     82 </body>
     83 </html>