dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/input-with-interpotaion-as-lvalue.html

   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>