dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/shader-with-global-variable-precision-mismatch.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>WebGL GLSL Conformance Tests</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 <script id="fshaderWithMediumpGlobal" type="text/something-not-javascript">
  22 // There is no default float precision in fragment shaders, so specify mediump.
  23 precision mediump float;
  24
  25 uniform vec4 foo;
  26
  27 void main()
  28 {
  29     gl_FragColor = foo;
  30 }
  31 </script>
  32 <script id="fshaderWithMediumpGlobalInt" type="text/something-not-javascript">
  33 // Default precision for int in fragment shaders is mediump.
  34 uniform int foo;
  35
  36 void main()
  37 {
  38     gl_FragColor = vec4(foo, 0, 0, 1);
  39 }
  40 </script>
  41 <script id="fshaderWithMediumpGlobalStruct" type="text/something-not-javascript">
  42 // There is no default float precision in fragment shaders, so specify mediump.
  43 precision mediump float;
  44
  45 struct foo
  46 {
  47    vec4 bar;
  48 };
  49
  50 uniform foo baz;
  51
  52 void main()
  53 {
  54     gl_FragColor = baz.bar;
  55 }
  56 </script>
  57 <script id="vshaderWithHighpGlobal" type="x-shader/x-vertex">
  58 // Default precision for vertex shaders is highp.
  59 uniform vec4 foo;
  60
  61 void main() {
  62     gl_Position = foo;
  63 }
  64 </script>
  65 <script id="vshaderWithHighpGlobalInt" type="x-shader/x-vertex">
  66 // Default precision for int in vertex shaders is highp.
  67 uniform int foo;
  68
  69 void main() {
  70     gl_Position = vec4(foo, 0, 0, 1);
  71 }
  72 </script>
  73 <script id="vshaderWithHighpGlobalStruct" type="x-shader/x-vertex">
  74 // Default precision for vertex shaders is highp.
  75 struct foo
  76 {
  77    vec4 bar;
  78 };
  79
  80 uniform foo baz;
  81
  82 void main()
  83 {
  84     gl_Position = baz.bar;
  85 }
  86 </script>
  87 <script>
  88 "use strict";
  89 description("Checks shaders with global variables and precision qualifier mismatch.");
  90
  91 var wtu = WebGLTestUtils;
  92
  93 var glslTests = [];
  94
  95 glslTests.push({
  96   vShaderId: 'vshaderWithHighpGlobal',
  97   vShaderSuccess: true,
  98   fShaderId: 'fshaderWithMediumpGlobal',
  99   fShaderSuccess: true,
 100   linkSuccess: false,
 101   passMsg: "mismatching precision for uniforms causes link error (as expected)",
 102 });
 103
 104 glslTests.push({
 105   vShaderId: 'vshaderWithHighpGlobalInt',
 106   vShaderSuccess: true,
 107   fShaderId: 'fshaderWithMediumpGlobalInt',
 108   fShaderSuccess: true,
 109   linkSuccess: false,
 110   passMsg: "mismatching precision for int uniforms with default precision causes link error (as expected)",
 111 });
 112
 113 glslTests.push({
 114   vShaderId: 'vshaderWithHighpGlobalStruct',
 115   vShaderSuccess: true,
 116   fShaderId: 'fshaderWithMediumpGlobalStruct',
 117   fShaderSuccess: true,
 118   linkSuccess: false,
 119   passMsg: "mismatching precision for structure uniforms causes link error (as expected)",
 120 });
 121
 122 GLSLConformanceTester.runTests(glslTests);
 123
 124 debug("");
 125 var successfullyParsed = true;
 126 </script>
 127 </body>
 128 </html>