dom/canvas/test/webgl-conf/checkout/conformance2/uniforms/query-uniform-blocks-after-shader-detach.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 Uniform Buffers Conformance Tests</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 <script id="vshader" type="x-shader/x-vertex">#version 300 es
  16
  17 in vec4 position;
  18
  19 uniform localInputs
  20 {
  21     mat4 projectionModelViewMatrix;
  22 };
  23
  24 void main ()
  25 {
  26     gl_Position = projectionModelViewMatrix * position;
  27 }
  28 </script>
  29 <script id="fshader" type="x-shader/x-fragment">#version 300 es
  30
  31 out lowp vec4 resultColor;
  32
  33 void main()
  34 {
  35     resultColor = vec4(0,1,0,1);
  36 }
  37 </script>
  38 </head>
  39 <body>
  40 <div id="description"></div>
  41 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas>
  42 <div id="console"></div>
  43 <script>
  44 // Adopted from the test case provided in crbug.com/735784
  45 "use strict";
  46 description("This tests UBO block lookups still work after detaching shaders");
  47
  48 debug("");
  49
  50 var wtu = WebGLTestUtils;
  51 var canvas = document.getElementById("canvas");
  52 var gl = wtu.create3DContext(canvas, null, 2);
  53
  54 function runTest(gl) {
  55     var program = wtu.loadProgramFromScript(gl, "vshader", "fshader");
  56     if (!program) {
  57         testFailed("Loading program failed");
  58         return;
  59     }
  60
  61     var shaders = gl.getAttachedShaders(program);
  62     if (!shaders || shaders.length != 2) {
  63         testFailed("getAttachedShaders failed");
  64         return;
  65     }
  66     gl.detachShader (program, shaders[0]);
  67     gl.detachShader (program, shaders[1]);
  68
  69     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No GL error from set up");
  70
  71     var index = gl.getUniformBlockIndex(program, "localInputs");
  72     wtu.glErrorShouldBe(gl, gl.NO_ERROR, "No GL error from getUniformBlockIndex");
  73     if (index == gl.INVALID_INDEX) {
  74         testFailed("getUniformBlockIndex returns INVALID_INDEX");
  75     } else {
  76         testPassed("getUniformBlockIndex returns valid index");
  77     }
  78 }
  79
  80 if (!gl) {
  81     testFailed("WebGL context does not exist");
  82 } else {
  83     testPassed("WebGL context exists");
  84     runTest(gl);
  85 }
  86
  87 debug("");
  88 var successfullyParsed = true;
  89 </script>
  90 <script src="../../js/js-test-post.js"></script>
  91
  92 </body>
  93 </html>