dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/array-of-struct-with-int-first-position.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>Driver Bug - Array of structs with int or bool in first position</title>
  12 <link rel="stylesheet" href="../../../resources/js-test-style.css"/>
  13 <script src="../../../js/js-test-pre.js"></script>
  14 <script src="../../../js/webgl-test-utils.js"></script>
  15 </head>
  16
  17 <body>
  18 <canvas id="example" style="border: none;" width="788" height="256"></canvas>
  19 <div id="description"></div>
  20 <div id="console"></div>
  21
  22 <script id="shader-vs" type="x-shader/x-vertex">
  23 attribute vec2 pos;
  24 void main(void) {
  25   gl_Position = vec4(pos, 0.0, 1.0);
  26 }
  27 </script>
  28
  29 <script id="shader-fs-int" type="x-shader/x-fragment">
  30 precision mediump float;
  31 struct Light {
  32   int unused;
  33   vec3 color;
  34 };
  35 const int numLights = 1;
  36 void main() {
  37   Light lights[numLights];
  38   lights[0].color = vec3(0.0, 0.5, 0.0);
  39
  40   vec3 result = vec3(0.0, 0.0, 0.0);
  41   for (int i=0; i<numLights; i++) {
  42     result += lights[i].color;
  43   }
  44   gl_FragColor = vec4(result.rgb, 1.0);
  45 }
  46 </script>
  47
  48 <script id="shader-fs-bool" type="x-shader/x-fragment">
  49 precision mediump float;
  50 struct Light {
  51   bool unused;
  52   vec3 color;
  53 };
  54 const int numLights = 1;
  55 void main() {
  56   Light lights[numLights];
  57   lights[0].color = vec3(0.0, 0.5, 0.0);
  58
  59   vec3 result = vec3(0.0, 0.0, 0.0);
  60   for (int i=0; i<numLights; i++) {
  61     result += lights[i].color;
  62   }
  63   gl_FragColor = vec4(result.rgb, 1.0);
  64 }
  65 </script>
  66
  67 <script id="shader-fs-bool-read" type="x-shader/x-fragment">
  68 precision mediump float;
  69 struct Light {
  70   bool useLight;
  71   vec3 color;
  72 };
  73 const int numLights = 1;
  74 void main() {
  75   Light lights[numLights];
  76   lights[0].color = vec3(0.0, 0.5, 0.0);
  77   lights[0].useLight = true;
  78
  79   vec3 result = vec3(0.0, 0.0, 0.0);
  80   for (int i=0; i<numLights; i++) {
  81     Light light = lights[i];
  82     if (light.useLight) {
  83       result += light.color;
  84     }
  85   }
  86   gl_FragColor = vec4(result.rgb, 1.0);
  87 }
  88 </script>
  89
  90 <script>
  91 "use strict";
  92
  93 function test() {
  94   description();
  95   debug(
  96     "This test checks accessing an array of structs, where the struct " +
  97     "definition has an int or bool in the first position. " +
  98     "This test has has failed in OS X on some NVIDIA cards, " +
  99     "such as the NVIDIA GeForce GT 650M. If things are working " +
 100     "correctly, then there will be a series of 50% green squares.")
 101   debug("");
 102
 103   var wtu = WebGLTestUtils;
 104   var canvas = document.getElementById("example");
 105   var gl = wtu.create3DContext(canvas);
 106
 107   var testNum = 0;
 108   var border = 10; // border between test squares for visibility
 109   var squareSize = 256;
 110   var expectedColor = [0, 127, 0, 255]; // 50% green
 111
 112   function subTest(message, fragmentShader) {
 113     debug(message);
 114     var startX = (squareSize + border) * testNum;
 115     var program = wtu.setupProgram(
 116       gl, ["shader-vs", fragmentShader], ["pos"], null, true);
 117     gl.viewport(startX, 0, squareSize, squareSize);
 118     wtu.drawUnitQuad(gl);
 119     wtu.checkCanvasRect(
 120       gl, startX, 0, squareSize, squareSize,
 121       expectedColor, "square should be 50% green", 1);
 122     debug("");
 123     testNum++;
 124   }
 125
 126   if (!gl) {
 127     testFailed("context does not exist");
 128   } else {
 129     wtu.setupUnitQuad(gl);
 130     subTest("Test unused int in first struct position.", "shader-fs-int");
 131     subTest("Test unused bool in first struct position.", "shader-fs-bool");
 132     subTest("Test used bool in first struct position.", "shader-fs-bool-read");
 133   }
 134 }
 135
 136 test();
 137 var successfullyParsed = true;
 138 </script>
 139 <script src="../../../js/js-test-post.js"></script>
 140 </body>
 141 </html>