dom/canvas/test/webgl-conf/checkout/conformance2/programs/get-uniform-indices.html

   1 <!--
   2 Copyright (c) 2022 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.
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   6
   7 <!DOCTYPE html>
   8 <html>
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  12 <script src="../../js/js-test-pre.js"></script>
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  15 <body>
  16 <div id="description"></div>
  17 <div id="console"></div>
  18
  19 <script>
  20 "use strict";
  21 description("This test verifies getUniformIndices behaviors.");
  22
  23 debug("");
  24
  25 var wtu = WebGLTestUtils;
  26
  27 const e_canvas = document.createElement('canvas');
  28 const gl = e_canvas.getContext('webgl2');
  29
  30 const VSRC = `\
  31   #version 300 es
  32   precision mediump float;
  33   uniform float u_vert_scalar;
  34   uniform float u_vert_arr[3];
  35   uniform float u_both_scalar;
  36   uniform float u_both_arr[3];
  37   void main() {
  38     gl_Position = vec4(0, 0, 0, 1);
  39     gl_Position.r += u_vert_scalar;
  40     gl_Position.r += u_vert_arr[1];
  41     gl_Position.r += u_both_scalar;
  42     gl_Position.r += u_both_arr[1];
  43   }
  44 `;
  45
  46 const FSRC = `\
  47   #version 300 es
  48   precision mediump float;
  49   uniform float u_frag_scalar;
  50   uniform float u_frag_arr[3];
  51   uniform float u_both_scalar;
  52   uniform float u_both_arr[3];
  53   out vec4 o_frag_color;
  54   void main() {
  55     o_frag_color = vec4(0, 0, 0, 1);
  56     o_frag_color.r += u_frag_scalar;
  57     o_frag_color.r += u_frag_arr[1];
  58     o_frag_color.r += u_both_scalar;
  59     o_frag_color.r += u_both_arr[1];
  60   }
  61 `;
  62
  63 (() => {
  64   if (!gl) {
  65     testFailed("WebGL context does not exist");
  66     return;
  67   }
  68
  69   window.prog = wtu.setupProgram(gl, [VSRC, FSRC]);
  70   if (!prog) {
  71     testFailed("Setting up program failed");
  72     return;
  73   }
  74   let err = gl.getError();
  75   if (err) throw err;
  76
  77   const IS_ACTIVE_BY_NAME = {
  78     'u_vert_scalar'   : true,
  79     'u_vert_scalar[0]': false,
  80     'u_vert_arr'      : true,
  81     'u_vert_arr[0]'   : true, // Even if the [0] is unused, the name enumerated
  82                               // via getActiveUniforms for this array is 'u_vert_arr[0]'.
  83     'u_vert_arr[1]'   : false,
  84
  85     'u_frag_scalar'   : true,
  86     'u_frag_scalar[0]': false,
  87     'u_frag_arr'      : true,
  88     'u_frag_arr[0]'   : true,
  89     'u_frag_arr[1]'   : false,
  90
  91     'u_both_scalar'   : true,
  92     'u_both_scalar[0]': false,
  93     'u_both_arr'      : true,
  94     'u_both_arr[0]'   : true,
  95     'u_both_arr[1]'   : false,
  96   };
  97   const NAMES = Object.keys(IS_ACTIVE_BY_NAME);
  98   const active_ids = gl.getUniformIndices(prog, NAMES);
  99
 100   err = gl.getError();
 101   if (err) throw err;
 102
 103   NAMES.forEach((name, i) => {
 104     const active_id_was = active_ids[i];
 105     const is_active_expected = IS_ACTIVE_BY_NAME[name];
 106     const is_active_was = active_id_was != gl.INVALID_INDEX;
 107     expectTrue(is_active_was == is_active_expected,
 108                `getUniformIndices([, '${name}' ,]) -> [, ${active_id_was} ,], should be [, ${is_active_expected ? '0<=N<INVALID_INDEX' : 'INVALID_INDEX'} ,]`);
 109     if (is_active_was) {
 110       const info = gl.getActiveUniform(prog, active_id_was);
 111       expectTrue(info.name.startsWith(name), `'${info.name}'.startsWith('${name}')`);
 112     }
 113   });
 114 })();
 115
 116 var successfullyParsed = true;
 117 </script>
 118 <script src="../../js/js-test-post.js"></script>
 119
 120 </body>
 121 </html>