dom/canvas/test/webgl-conf/checkout/conformance/programs/gl-get-active-uniform.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 getActiveUniform 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 void main()
  22 {
  23     gl_Position = vec4(0, 0, 0, 1);
  24 }
  25 </script>
  26 <script id="fshader" type="x-shader/x-fragment">
  27 precision mediump float;
  28 uniform $type uniform0;
  29 void main()
  30 {
  31     gl_FragColor = vec4(0,$access,0,1);
  32 }
  33 </script>
  34 <script id="fshaderA" type="x-shader/x-fragment">
  35 precision mediump float;
  36 uniform float uniform0;
  37 void main()
  38 {
  39     gl_FragColor = vec4(0,uniform0,0,1);
  40 }
  41 </script>
  42 <script id="fshaderB" type="x-shader/x-fragment">
  43 precision mediump float;
  44 uniform float uniform0;
  45 uniform float uniform1;
  46 void main()
  47 {
  48     gl_FragColor = vec4(0,uniform0,uniform1,1);
  49 }
  50 </script>
  51 <script>
  52 "use strict";
  53 description("Tests getActiveUniform for various types");
  54
  55 var wtu = WebGLTestUtils;
  56 var gl = wtu.create3DContext("example");
  57
  58 var tests = [
  59   { glType: gl.FLOAT,        size: 1, type: 'float',       access: 'uniform0'},
  60   { glType: gl.FLOAT_VEC2,   size: 1, type: 'vec2',        access: 'uniform0[1]'},
  61   { glType: gl.FLOAT_VEC3,   size: 1, type: 'vec3',        access: 'uniform0[2]'},
  62   { glType: gl.FLOAT_VEC4,   size: 1, type: 'vec4',        access: 'uniform0[3]'},
  63   { glType: gl.FLOAT_MAT2,   size: 1, type: 'mat2',        access: 'uniform0[1][1]'},
  64   { glType: gl.FLOAT_MAT3,   size: 1, type: 'mat3',        access: 'uniform0[2][2]'},
  65   { glType: gl.FLOAT_MAT3,   size: 1, type: 'mat3',        access: 'uniform0[2][2]'},
  66   { glType: gl.FLOAT_MAT4,   size: 1, type: 'mat4',        access: 'uniform0[3][3]'},
  67   { glType: gl.INT,          size: 1, type: 'int',         access: 'float(uniform0)'},
  68   { glType: gl.INT_VEC2,     size: 1, type: 'ivec2',       access: 'float(uniform0[1])'},
  69   { glType: gl.INT_VEC3,     size: 1, type: 'ivec3',       access: 'float(uniform0[2])'},
  70   { glType: gl.INT_VEC4,     size: 1, type: 'ivec4',       access: 'float(uniform0[3])'},
  71   { glType: gl.BOOL,         size: 1, type: 'bool',        access: 'float(uniform0)'},
  72   { glType: gl.BOOL_VEC2,    size: 1, type: 'bvec2',       access: 'float(uniform0[1])'},
  73   { glType: gl.BOOL_VEC3,    size: 1, type: 'bvec3',       access: 'float(uniform0[2])'},
  74   { glType: gl.BOOL_VEC4,    size: 1, type: 'bvec4',       access: 'float(uniform0[3])'},
  75   { glType: gl.SAMPLER_2D,   size: 1, type: 'sampler2D',   access: 'texture2D(uniform0, vec2(0,0)).x'},
  76   { glType: gl.SAMPLER_CUBE, size: 1, type: 'samplerCube', access: 'textureCube(uniform0, vec3(0,1,0)).x'}
  77 ];
  78
  79 var vs = wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER);
  80 var source = document.getElementById('fshader').text;
  81
  82 function createProgram(type, access) {
  83   var fs = wtu.loadShader(
  84       gl,
  85       source.replace('$type', type).replace('$access', access),
  86       gl.FRAGMENT_SHADER);
  87   var program = wtu.setupProgram(gl, [vs, fs]);
  88   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from setup");
  89   return program;
  90 }
  91
  92 for (var tt = 0; tt < tests.length; ++tt) {
  93   var t = tests[tt];
  94   var program = createProgram(t.type, t.access);
  95   var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
  96   var found = false;
  97   for (var ii = 0; ii < numUniforms; ++ii) {
  98     var info = gl.getActiveUniform(program, ii);
  99     if (info.name == 'uniform0') {
 100       found = true;
 101       assertMsg(info.type == t.glType,
 102                 "type must be " + wtu.glEnumToString(gl, t.glType) + " was " +
 103                 wtu.glEnumToString(gl, info.type));
 104       assertMsg(info.size == t.size,
 105                 "size must be " + t.size + ' was ' + info.size);
 106     }
 107   }
 108   if (!found) {
 109     testFailed("uniform 'uniform0' not found");
 110   }
 111 }
 112
 113 var p1 = wtu.setupProgram(gl, [vs, 'fshaderA']);
 114 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from program A");
 115 var p2 = wtu.setupProgram(gl, [vs, 'fshaderB']);
 116 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from program B");
 117 var l1 = gl.getUniformLocation(p1, 'uniform0');
 118 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors getting location of uniform0 p1");
 119 var l2 = gl.getUniformLocation(p2, 'uniform0');
 120 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors getting location of uniform0 p2");
 121
 122 gl.useProgram(p2);
 123 gl.uniform1f(l2, 1);
 124 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors setting uniform 0");
 125 gl.uniform1f(l1, 2);
 126 wtu.glErrorShouldBe(gl, gl.INVALID_OPERATION,
 127                     "setting a uniform using a location from another program");
 128
 129 var successfullyParsed = true;
 130 </script>
 131 <script src="../../js/js-test-post.js"></script>
 132
 133 </body>
 134 </html>
 135
 136