dom/canvas/test/webgl-conf/checkout/conformance/uniforms/gl-unknown-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 Unknown Uniform 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 <div id="description"></div>
  18 <div id="console"></div>
  19 <canvas id="canvas" width="2" height="2"> </canvas>
  20 <script id="vshader" type="x-shader/x-vertex">
  21 attribute vec4 vPosition;
  22 void main()
  23 {
  24     gl_Position = vPosition;
  25 }
  26 </script>
  27
  28 <script id="fshader" type="x-shader/x-fragment">
  29 void main()
  30 {
  31     gl_FragColor = vec4(1.0,0.0,0.0,1.0);
  32 }
  33 </script>
  34 <script>
  35 "use strict";
  36 description("Tests that unknown uniforms don't cause errors.");
  37
  38 debug("");
  39 debug("Canvas.getContext");
  40
  41 var wtu = WebGLTestUtils;
  42 var gl = wtu.create3DContext("canvas");
  43 if (!gl) {
  44   testFailed("context does not exist");
  45 } else {
  46   testPassed("context exists");
  47
  48   debug("");
  49
  50   var program = wtu.setupProgram(gl, ["vshader", "fshader"], ["vPosition"]);
  51   // Get the location of an unknown uniform.
  52   var loc = gl.getUniformLocation(program, "someUnknownUniform");
  53   assertMsg(loc === null, "location of unknown uniform should be null");
  54   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
  55       "there should be no error from getting an unknown uniform");
  56   gl.uniform1f(loc, 1);
  57   wtu.glErrorShouldBe(gl, gl.NO_ERROR,
  58       "there should be no error from trying to set an unknown uniform");
  59 }
  60
  61 debug("");
  62 var successfullyParsed = true;
  63 </script>
  64 <script src="../../js/js-test-post.js"></script>
  65
  66 </body>
  67 </html>