dom/canvas/test/webgl-conf/checkout/conformance/programs/gl-get-active-attribute.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 getActiveAttrib conformance test.</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 <body>
  17 <canvas id="example" width="16" height="16"></canvas>
  18 <div id="description"></div>
  19 <div id="console"></div>
  20 <script id="vshader" type="x-shader/x-vertex">
  21 attribute $type attr0;
  22 void main()
  23 {
  24     gl_Position = vec4(0, 0, 0, attr0$access);
  25 }
  26 </script>
  27 <script id="fshader" type="x-shader/x-fragment">
  28 void main()
  29 {
  30     gl_FragColor = vec4(0,1,0,1);
  31 }
  32 </script>
  33 <script>
  34 "use strict";
  35 description("Tests getActiveAttrib for various types");
  36
  37 var wtu = WebGLTestUtils;
  38 var gl = wtu.create3DContext("example");
  39
  40 var tests = [
  41 { glType: gl.FLOAT,      size: 1, type: 'float', access: ''},
  42 { glType: gl.FLOAT_VEC2, size: 1, type: 'vec2',  access: '[1]'},
  43 { glType: gl.FLOAT_VEC3, size: 1, type: 'vec3',  access: '[2]'},
  44 { glType: gl.FLOAT_VEC4, size: 1, type: 'vec4',  access: '[3]'},
  45 { glType: gl.FLOAT_MAT2, size: 1, type: 'mat2',  access: '[1][1]'},
  46 { glType: gl.FLOAT_MAT3, size: 1, type: 'mat3',  access: '[2][2]'},
  47 { glType: gl.FLOAT_MAT4, size: 1, type: 'mat4',  access: '[3][3]'},
  48 ];
  49
  50 var source = document.getElementById('vshader').text;
  51 var fs = wtu.loadShaderFromScript(gl, 'fshader', gl.FRAGMENT_SHADER);
  52 for (var tt = 0; tt < tests.length; ++tt) {
  53   var t = tests[tt];
  54   var vs = wtu.loadShader(
  55       gl,
  56       source.replace('$type', t.type).replace('$access', t.access),
  57       gl.VERTEX_SHADER);
  58   var program = wtu.setupProgram(gl, [vs, fs]);
  59   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from setup");
  60   var numAttribs = gl.getProgramParameter(program, gl.ACTIVE_ATTRIBUTES);
  61   var found = false;
  62   for (var ii = 0; ii < numAttribs; ++ii) {
  63     var info = gl.getActiveAttrib(program, ii);
  64     if (info.name == 'attr0') {
  65       found = true;
  66       assertMsg(info.type == t.glType,
  67                 "type must be " + wtu.glEnumToString(gl, t.glType) + " was " +
  68                 wtu.glEnumToString(gl, info.type));
  69       assertMsg(info.size == t.size,
  70                 "size must be " + t.size + ' was ' + info.size);
  71     }
  72   }
  73   if (!found) {
  74     testFailed("attrib 'attr0' not found");
  75   }
  76 }
  77
  78 var successfullyParsed = true;
  79 </script>
  80 <script src="../../js/js-test-post.js"></script>
  81
  82 </body>
  83 </html>
  84
  85