dom/canvas/test/webgl-conf/checkout/conformance2/glsl3/uninitialized-local-global-variables.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>Uninitialized local/global variables should be initialized (ESSL 3.00 cases)</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
  17 <!--
  18 This test covers cases that can't be tested with ESSL 1.00 due to Appendix A limitations.
  19 The ESSL 1.00 cases are covered in conformance/glsl/misc/uninitialized-local-global-variables.html
  20 -->
  21
  22 <script id="vs_uninit_in_frag" type="x-shader/x-vertex">#version 300 es
  23 precision highp float;
  24 in vec4 a_position;
  25 void main() {
  26     gl_Position = a_position;
  27 }
  28 </script>
  29
  30 <!-- Uninitialized variables in a for loop initializer in fragment shader -->
  31 <script id="fs_uninit_variables_in_loop_in_frag" type="x-shader/x-fragment">#version 300 es
  32 precision highp float;
  33 out vec4 my_FragColor;
  34 void main() {
  35     int i = 0;
  36     for (vec4 uninit, uninit2[2] = vec4[2](uninit, uninit); i < 1; ++i) {
  37         my_FragColor = uninit2[0];
  38     }
  39 }
  40 </script>
  41
  42 <!-- Uninitialized nameless struct in a for loop initializer in fragment shader -->
  43 <script id="fs_uninit_nameless_struct_in_loop_in_frag" type="x-shader/x-fragment">#version 300 es
  44 precision highp float;
  45 out vec4 my_FragColor;
  46 void main() {
  47     int i = 0;
  48     for (struct { vec4 v; } uninit; i < 1; ++i) {
  49         my_FragColor = uninit.v;
  50     }
  51 }
  52 </script>
  53
  54 </head>
  55 <body>
  56 <canvas id="canvas" width="50" height="50"></canvas>
  57 <div id="description"></div>
  58 <div id="console"></div>
  59 <script>
  60 "use strict";
  61 description('Uninitialized local/global variables should be initialized: http://anglebug.com/1966');
  62
  63 var wtu = WebGLTestUtils;
  64 var gl = wtu.create3DContext("canvas", undefined, 2);
  65 wtu.setupUnitQuad(gl);
  66
  67 var cases = [
  68   {
  69     name: "Uninitialized variables in a for loop initializer in fragment shader",
  70     prog: ["vs_uninit_in_frag", "fs_uninit_variables_in_loop_in_frag"],
  71   },
  72   {
  73     name: "Uninitialized nameless struct in a for loop initializer in fragment shader",
  74     prog: ["vs_uninit_in_frag", "fs_uninit_nameless_struct_in_loop_in_frag"],
  75   }
  76 ];
  77
  78 function runTest() {
  79   for (var i = 0; i < cases.length; ++i) {
  80     debug("");
  81     debug(cases[i].name);
  82     var program = wtu.setupProgram(gl, cases[i].prog, ["a_position"], undefined, true);
  83     gl.clearColor(1.0, 0.0, 0.0, 1.0);
  84     wtu.clearAndDrawUnitQuad(gl);
  85     wtu.checkCanvas(gl, [0, 0, 0, 0]);
  86   }
  87
  88   debug("");
  89   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "there should be no errors");
  90 }
  91
  92 runTest();
  93
  94 var successfullyParsed = true;
  95 </script>
  96 <script src="../../js/js-test-post.js"></script>
  97 </body>
  98 </html>