dom/canvas/test/webgl-conf/checkout/conformance2/programs/sampler-uniforms.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>WebGL2 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">#version 300 es
  21 void main()
  22 {
  23     gl_Position = vec4(0, 0, 0, 1);
  24 }
  25 </script>
  26 <script id="fshader" type="x-shader/x-fragment">#version 300 es
  27 precision mediump float;
  28 uniform mediump $type uniform0;
  29 out vec4 myFragColor;
  30 void main()
  31 {
  32     myFragColor = vec4(0,$access,0,1);
  33 }
  34 </script>
  35 <script>
  36 "use strict";
  37 description("Tests getActiveUniform for various types");
  38
  39 var wtu = WebGLTestUtils;
  40 var gl = wtu.create3DContext("example", undefined, 2);
  41
  42 var tests = [
  43   { glType: gl.SAMPLER_2D,   size: 1, type: 'sampler2D',   access: 'texture(uniform0, vec2(0,0)).x'},
  44   { glType: gl.SAMPLER_CUBE, size: 1, type: 'samplerCube', access: 'texture(uniform0, vec3(0,1,0)).x'},
  45   { glType: gl.SAMPLER_3D,   size: 1, type: 'sampler3D',   access: 'texture(uniform0, vec3(0,1,0)).x'},
  46   { glType: gl.SAMPLER_2D_ARRAY, size: 1, type: 'sampler2DArray', access: 'texture(uniform0, vec3(0,1,0)).x'},
  47
  48   { glType: gl.SAMPLER_2D_SHADOW,   size: 1, type: 'sampler2DShadow',   access: 'texture(uniform0, vec3(0,1,0))'},
  49   { glType: gl.SAMPLER_CUBE_SHADOW, size: 1, type: 'samplerCubeShadow', access: 'texture(uniform0, vec4(0,1,0,0))'},
  50   { glType: gl.SAMPLER_2D_ARRAY_SHADOW, size: 1, type: 'sampler2DArrayShadow', access: 'texture(uniform0, vec4(0,1,0,0))'},
  51
  52   { glType: gl.INT_SAMPLER_2D,   size: 1, type: 'isampler2D',   access: 'texture(uniform0, vec2(0,0)).x'},
  53   { glType: gl.INT_SAMPLER_CUBE, size: 1, type: 'isamplerCube', access: 'texture(uniform0, vec3(0,1,0)).x'},
  54   { glType: gl.INT_SAMPLER_3D,   size: 1, type: 'isampler3D',   access: 'texture(uniform0, vec3(0,1,0)).x'},
  55   { glType: gl.INT_SAMPLER_2D_ARRAY,   size: 1, type: 'isampler2DArray',   access: 'texture(uniform0, vec3(0,1,0)).x'},
  56
  57   { glType: gl.UNSIGNED_INT_SAMPLER_2D,   size: 1, type: 'usampler2D',   access: 'texture(uniform0, vec2(0,0)).x'},
  58   { glType: gl.UNSIGNED_INT_SAMPLER_CUBE, size: 1, type: 'usamplerCube', access: 'texture(uniform0, vec3(0,1,0)).x'},
  59   { glType: gl.UNSIGNED_INT_SAMPLER_3D,   size: 1, type: 'usampler3D',   access: 'texture(uniform0, vec3(0,1,0)).x'},
  60   { glType: gl.UNSIGNED_INT_SAMPLER_2D_ARRAY,   size: 1, type: 'usampler2DArray',   access: 'texture(uniform0, vec3(0,1,0)).x'},
  61 ];
  62
  63 var vs = wtu.loadShaderFromScript(gl, 'vshader', gl.VERTEX_SHADER);
  64 var source = document.getElementById('fshader').text;
  65
  66 function createProgram(type, access) {
  67   var fs = wtu.loadShader(
  68       gl,
  69       source.replace('$type', type).replace('$access', access),
  70       gl.FRAGMENT_SHADER);
  71   var program = wtu.setupProgram(gl, [vs, fs]);
  72   wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors from setup");
  73   return program;
  74 }
  75
  76 for (var tt = 0; tt < tests.length; ++tt) {
  77   var t = tests[tt];
  78   debug("");
  79   debug("Testing uniform sampler type : " + t.type);
  80   var program = createProgram(t.type, t.access);
  81   var numUniforms = gl.getProgramParameter(program, gl.ACTIVE_UNIFORMS);
  82   assertMsg(numUniforms >= 1, "at least 1 sampler uniform");
  83   var found = false;
  84   for (var ii = 0; ii < numUniforms; ++ii) {
  85     var info = gl.getActiveUniform(program, ii);
  86     if (info.name == 'uniform0') {
  87       found = true;
  88       assertMsg(info.type == t.glType,
  89                 "type must be " + wtu.glEnumToString(gl, t.glType) + " was " +
  90                 wtu.glEnumToString(gl, info.type));
  91       assertMsg(info.size == t.size,
  92                 "size must be " + t.size + ' was ' + info.size);
  93     }
  94   }
  95   assertMsg(found, "uniform 'uniform0' should exist");
  96   var loc = gl.getUniformLocation(program, 'uniform0');
  97   assertMsg(loc != null, "getUniformLocation must return non null");
  98   gl.uniform1i(loc, tt + 1);
  99   var val = gl.getUniform(program, loc);
 100   assertMsg(val == tt + 1, "getUniform must return set value");
 101 }
 102
 103 debug("");
 104 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "no errors running the tests");
 105
 106 var successfullyParsed = true;
 107 </script>
 108 <script src="../../js/js-test-post.js"></script>
 109
 110 </body>
 111 </html>