tor-browser

The Tor Browser
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re-compile-re-link.html (3774B)

      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 Re-Compile and Re-link Shader 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="4" height="4" style="width: 40px; height: 30px;"></canvas>
     18 <div id="description"></div>
     19 <div id="console"></div>
     20 <script id="vshader" type="x-shader/x-vertex">
     21 attribute float column;
     22 attribute float height;
     23 uniform float position;
     24 void main() {
     25  gl_Position = vec4(mod(column - position, 1.0) * 2.0 - 1.0, height, 0, 1);
     26 }
     27 </script>
     28 
     29 <script id="fshader1" type="x-shader/x-fragment">
     30 precision mediump float;
     31 void main() {
     32  gl_FragColor = vec4(1,0,0,1);
     33 }
     34 </script>
     35 <script id="fshader2" type="x-shader/x-fragment">
     36 precision mediump float;
     37 uniform float foobar;
     38 void main() {
     39  gl_FragColor = vec4(1,0,foobar,1);
     40 }
     41 </script>
     42 <script id="vshaderB" type="not-js">
     43 attribute vec2 position;
     44 varying vec2 v_texCoord;
     45 void main() {
     46  gl_Position = vec4(position, 0, 1);
     47  v_texCoord = vec2(position * 0.5 + 0.5);
     48 }
     49 </script>
     50 <script id="fshaderB" type="not-js">
     51 precision mediump float;
     52 varying vec2 v_texCoord;
     53 uniform sampler2D tex;
     54 void main() {
     55  gl_FragColor = texture2D(tex, v_texCoord);
     56 }
     57 </script>
     58 
     59 <script>
     60 "use strict";
     61 description(document.title);
     62 var wtu = WebGLTestUtils;
     63 var gl = wtu.create3DContext("example");
     64 
     65 var vsSource = document.getElementById("vshader").text;
     66 var fs1Source = document.getElementById("fshader1").text;
     67 var fs2Source = document.getElementById("fshader2").text;
     68 
     69 var vsSourceB = document.getElementById("vshaderB").text;
     70 var fsSourceB = document.getElementById("fshaderB").text;
     71 
     72 var vShader = gl.createShader(gl.VERTEX_SHADER);
     73 var fShader = gl.createShader(gl.FRAGMENT_SHADER);
     74 
     75 var vShaderB = gl.createShader(gl.VERTEX_SHADER);
     76 var fShaderB = gl.createShader(gl.FRAGMENT_SHADER);
     77 
     78 var program = gl.createProgram();
     79 var programB = gl.createProgram();
     80 
     81 gl.attachShader(program, vShader);
     82 gl.attachShader(program, fShader);
     83 
     84 gl.attachShader(programB, vShaderB);
     85 gl.attachShader(programB, fShaderB);
     86 
     87 var success;
     88 var shader;
     89 
     90 function checkShaderStatus(s) {
     91  shader = s;
     92  shouldBeTrue("success = gl.getShaderParameter(shader, gl.COMPILE_STATUS)");
     93  if (!success) {
     94    debug("error: " + gl.getShaderInfoLog(shader));
     95  }
     96 }
     97 
     98 var prg;
     99 function checkProgramStatus(p) {
    100  prg = p;
    101  shouldBeTrue("success = gl.getProgramParameter(prg, gl.LINK_STATUS)");
    102  if (!success) {
    103    debug("error: " + gl.getProgramInfoLog(prg));
    104  }
    105 }
    106 
    107 for (var i = 0; i < 10; ++i) {
    108  gl.shaderSource(vShader, vsSource);
    109  gl.compileShader(vShader);
    110  checkShaderStatus(vShader)
    111  gl.shaderSource(fShader, fs1Source);
    112  gl.compileShader(fShader);
    113  checkShaderStatus(fShader)
    114 
    115  gl.linkProgram(program);
    116  checkProgramStatus(program)
    117  gl.useProgram(program);
    118 
    119  gl.shaderSource(vShaderB, vsSourceB);
    120  gl.compileShader(vShaderB);
    121  checkShaderStatus(vShaderB)
    122  gl.shaderSource(fShaderB, fsSourceB);
    123  gl.compileShader(fShaderB);
    124  checkShaderStatus(fShaderB)
    125 
    126  gl.linkProgram(programB);
    127  checkProgramStatus(programB)
    128 
    129  gl.useProgram(programB);
    130 }
    131 
    132 for (var i = 0; i < 10; ++i) {
    133  // Now change the fragment shader
    134  gl.shaderSource(fShader, fs2Source);
    135  gl.compileShader(fShader);
    136  checkShaderStatus(fShader)
    137 
    138  // And re-link
    139  gl.linkProgram(program);
    140  checkProgramStatus(program)
    141 }
    142 
    143 wtu.glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors");
    144 
    145 var successfullyParsed = true;
    146 </script>
    147 <script src="../../../js/js-test-post.js"></script>
    148 
    149 </body>
    150 </html>