tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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test_without_index_validation.html (2168B)

      1 <!DOCTYPE html>
      2 <html>
      3 <head>
      4 <meta charset='utf-8'>
      5 <title>WebGL test: Drawing without index validation</title>
      6 <script src='/tests/SimpleTest/SimpleTest.js'></script>
      7 <link rel='stylesheet' href='/tests/SimpleTest/test.css'>
      8 
      9 <script id='vertSource' type='none'>
     10 void main(void) {
     11  gl_PointSize = 1.0;
     12  gl_Position = vec4(0, 0, 0, 1);
     13 }
     14 </script>
     15 
     16 <script id='fragSource' type='none'>
     17 precision mediump float;
     18 
     19 void main(void) {
     20  gl_FragColor = vec4(0, 1, 0, 1);
     21 }
     22 </script>
     23 </head>
     24 <body>
     25 <script>
     26 
     27 function test() {
     28  const c = document.createElement('canvas');
     29  c.width = c.height = 1;
     30  const gl = c.getContext('webgl');
     31  if (!gl) {
     32    todo(false, 'WebGL is unavailable.');
     33    return;
     34  }
     35  document.body.appendChild(c);
     36 
     37  const vs = gl.createShader(gl.VERTEX_SHADER);
     38  gl.shaderSource(vs, vertSource.innerHTML.trim());
     39  gl.compileShader(vs);
     40  const fs = gl.createShader(gl.FRAGMENT_SHADER);
     41  gl.shaderSource(fs, fragSource.innerHTML.trim());
     42  gl.compileShader(fs);
     43  const prog = gl.createProgram();
     44  gl.attachShader(prog, vs);
     45  gl.attachShader(prog, fs);
     46  gl.linkProgram(prog);
     47  gl.useProgram(prog);
     48 
     49  gl.clearColor(1,0,0,1);
     50  const pixel = new Uint32Array(1);
     51  const pixelData = new Uint8Array(pixel.buffer);
     52 
     53  function expectPixel(expected, info) {
     54    gl.readPixels(0, 0, 1, 1, gl.RGBA, gl.UNSIGNED_BYTE, pixelData);
     55    ok(pixel[0] == expected,
     56       '[' + info + '] Expected 0x' + expected.toString(16) + ', was 0x' + pixel[0].toString(16));
     57  }
     58 
     59  gl.clear(gl.COLOR_BUFFER_BIT);
     60  expectPixel(0xFF0000FF, 'Clear');
     61 
     62  gl.drawArrays(gl.POINTS, 0, 1);
     63  expectPixel(0xFF00FF00, 'DrawArrays');
     64 
     65  const indexBuffer = gl.createBuffer();
     66  gl.bindBuffer(gl.ELEMENT_ARRAY_BUFFER, indexBuffer);
     67  gl.bufferData(gl.ELEMENT_ARRAY_BUFFER, new Uint16Array([0]), gl.STATIC_DRAW);
     68 
     69  gl.clear(gl.COLOR_BUFFER_BIT);
     70  gl.drawElements(gl.POINTS, 1, gl.UNSIGNED_SHORT, 0);
     71  expectPixel(0xFF00FF00, 'DrawElements');
     72 
     73  SimpleTest.finish();
     74 }
     75 
     76 SimpleTest.waitForExplicitFinish();
     77 
     78 const prefArrArr = [
     79  ['webgl.force-index-validation', -1]
     80 ];
     81 const prefEnv = {'set': prefArrArr};
     82 SpecialPowers.pushPrefEnv(prefEnv, test);
     83 
     84 </script>
     85 </body>
     86 </html>