dom/canvas/test/webgl-conf/checkout/conformance/glsl/misc/struct-as-inout-parameter.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>GLSL Structure as Inout Parameter Test</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
  18 <script id="simple-vs" type="x-shader/x-vertex">
  19 attribute vec4 a_position;
  20 void main(void) {
  21     gl_Position = a_position;
  22 }
  23 </script>
  24 <script id="struct-inout-parameter-fs" type="x-shader/x-fragment">
  25 struct ColorData {
  26   vec3 red;
  27   vec3 blue;
  28 };
  29
  30 void modify(inout ColorData colorData) {
  31   colorData.red += vec3(0.5, 0.0, 0.0);
  32   colorData.blue += vec3(0.0, 0.0, 0.5);
  33 }
  34
  35 void main() {
  36   ColorData colorData;
  37   colorData.red = vec3(0.5, 0.0, 0.0);
  38   colorData.blue = vec3(0.0, 0.0, 0.5);
  39
  40   vec3 red = vec3(1.0, 0.0, 0.0);
  41   vec3 green = vec3(0.0, 1.0, 0.0);
  42   vec3 blue = vec3(0.0, 0.0, 1.0);
  43   vec3 finalColor;
  44
  45   modify(colorData);
  46
  47   if (colorData.red == red && colorData.blue == blue)
  48     finalColor = green;
  49   else
  50     finalColor = red;
  51
  52   gl_FragColor = vec4(finalColor, 1.0);
  53 }
  54 </script>
  55 </head>
  56 <body>
  57 <div id="description"></div>
  58 <div id="console"></div>
  59 <script>
  60 "use strict";
  61 description("Testing structs as inout parameter");
  62
  63 debug('Regression test for <a href="http://crbug.com/851870">http://crbug.com/851870</a> / <a href="https://github.com/mrdoob/three.js/issues/14137">https://github.com/mrdoob/three.js/issues/14137</a>');
  64
  65 function prepend(floatPrecision) {
  66   let source = document.getElementById('struct-inout-parameter-fs').text;
  67   return 'precision ' + floatPrecision + ' float;\n' + source;
  68 }
  69
  70 let tests = [
  71   {
  72     vShaderId: "simple-vs",
  73     vShaderSuccess: true,
  74     fShaderSource: prepend('lowp'),
  75     fShaderSuccess: true,
  76     linkSuccess: true,
  77     render: true,
  78     passMsg: "lowp struct used as inout parameter",
  79   },
  80   {
  81     vShaderId: "simple-vs",
  82     vShaderSuccess: true,
  83     fShaderSource: prepend('mediump'),
  84     fShaderSuccess: true,
  85     linkSuccess: true,
  86     render: true,
  87     passMsg: "mediump struct used as inout parameter",
  88   },
  89 ];
  90
  91 let wtu = WebGLTestUtils;
  92 let gl = wtu.create3DContext();
  93 let precision = gl.getShaderPrecisionFormat(gl.FRAGMENT_SHADER, gl.HIGH_FLOAT);
  94 let highpSupported = (precision.rangeMin >= 62 && precision.rangeMax >= 62 && precision.precision >= 16);
  95 debug("highp is" + (highpSupported ? "" : " not") + " supported in fragment shaders");
  96
  97 if (highpSupported) {
  98   tests.push(
  99     {
 100       vShaderId: "simple-vs",
 101       vShaderSuccess: true,
 102       fShaderSource: prepend('highp'),
 103       fShaderSuccess: true,
 104       linkSuccess: true,
 105       render: true,
 106       passMsg: "highp struct used as inout parameter",
 107     }
 108   );
 109 }
 110
 111 GLSLConformanceTester.runTests(tests);
 112 debug("");
 113
 114 var successfullyParsed = true;
 115 </script>
 116 </body>
 117 </html>