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| 1 <!-- |
| 2 |
| 3 /* |
| 4 ** Copyright (c) 2012 The Khronos Group Inc. |
| 5 ** |
| 6 ** Permission is hereby granted, free of charge, to any person obtaining a |
| 7 ** copy of this software and/or associated documentation files (the |
| 8 ** "Materials"), to deal in the Materials without restriction, including |
| 9 ** without limitation the rights to use, copy, modify, merge, publish, |
| 10 ** distribute, sublicense, and/or sell copies of the Materials, and to |
| 11 ** permit persons to whom the Materials are furnished to do so, subject to |
| 12 ** the following conditions: |
| 13 ** |
| 14 ** The above copyright notice and this permission notice shall be included |
| 15 ** in all copies or substantial portions of the Materials. |
| 16 ** |
| 17 ** THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| 18 ** EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| 19 ** MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. |
| 20 ** IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY |
| 21 ** CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
| 22 ** TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
| 23 ** MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS. |
| 24 */ |
| 25 |
| 26 --> |
| 27 |
| 28 <!DOCTYPE html> |
| 29 <html> |
| 30 <head> |
| 31 <meta charset="utf-8"> |
| 32 <title>WebGL ouf of bounds uniform array access.</title> |
| 33 <link rel="stylesheet" href="../resources/js-test-style.css"/> |
| 34 <script src="../resources/js-test-pre.js"></script> |
| 35 <script src="../conformance/resources/webgl-test-utils.js"> </script> |
| 36 </head> |
| 37 <body style="background: #666;"> |
| 38 <div id="description"></div> |
| 39 <div id="console"></div> |
| 40 <div>elem mult: <span id="elemMultDisplay"></span></div> |
| 41 <input type="range" id="elemMult" value="4" min="0" max="2048" style="width: 100
%;"/> |
| 42 <div>line width: <span id="lineWidthDisplay"></span></div> |
| 43 <input type="range" id="lineWidth" value="512" min="0" max="2540" style="width:
100%;"/> |
| 44 <canvas id="example" width="256" height="256" style="background: black;"> |
| 45 </canvas> |
| 46 <script id="vshader" type="x-shader/x-vertex"> |
| 47 attribute vec4 vPosition; |
| 48 varying vec4 v_color; |
| 49 uniform float lineWidth; |
| 50 uniform int elemMult; |
| 51 uniform vec4 someArray[2]; |
| 52 void main() |
| 53 { |
| 54 vec2 texcoord = vec2(vPosition.xy * 0.5 + vec2(0.5, 0.5)); |
| 55 int index = int(texcoord.x + texcoord.y * lineWidth) * elemMult; |
| 56 v_color = someArray[index]; |
| 57 gl_Position = vPosition; |
| 58 } |
| 59 </script> |
| 60 |
| 61 <script id="fshader" type="x-shader/x-fragment"> |
| 62 precision mediump float; |
| 63 varying vec4 v_color; |
| 64 void main() |
| 65 { |
| 66 gl_FragColor = v_color * vec4(1.0 / 256.0, 1.0 / 256.0, 1.0 / 256.0, 1.0 / 256
.0) + vec4(0,0,0,0.5); |
| 67 } |
| 68 </script> |
| 69 <script> |
| 70 window.onload = main; |
| 71 debug("Tests a WebGL program that accesses out of bounds uniform array elements"
); |
| 72 |
| 73 function main() { |
| 74 var wtu = WebGLTestUtils; |
| 75 var gl = wtu.create3DContext("example"); |
| 76 var program = wtu.setupProgram( |
| 77 gl, |
| 78 ['vshader', 'fshader'], |
| 79 ['vPosition'], [0]); |
| 80 var gridRes = 255; |
| 81 wtu.setupQuad(gl, gridRes, 0); |
| 82 var lineWidthLoc = gl.getUniformLocation(program, "lineWidth"); |
| 83 var elemMultLoc = gl.getUniformLocation(program, "elemMult"); |
| 84 assertMsg(gl.getError() == gl.NO_ERROR, "Should be no errors from setup."); |
| 85 |
| 86 var lineWidth = 512; |
| 87 var lineWidthElem = document.getElementById("lineWidth"); |
| 88 var lineWidthDisplayElem = document.getElementById("lineWidthDisplay"); |
| 89 |
| 90 lineWidthElem.value = lineWidth; |
| 91 |
| 92 lineWidthElem.addEventListener('change', function(event) { |
| 93 //console.log(event.target.value); |
| 94 lineWidth = event.target.value; |
| 95 draw(); |
| 96 }, false); |
| 97 |
| 98 var elemMult = 4; |
| 99 var elemMultElem = document.getElementById("elemMult"); |
| 100 var elemMultDisplayElem = document.getElementById("elemMultDisplay"); |
| 101 |
| 102 elemMultElem.value = elemMult; |
| 103 |
| 104 elemMultElem.addEventListener('change', function(event) { |
| 105 //console.log(event.target.value); |
| 106 elemMult = event.target.value; |
| 107 draw(); |
| 108 }, false); |
| 109 |
| 110 draw(); |
| 111 |
| 112 function draw() { |
| 113 lineWidthDisplayElem.innerText = lineWidth; |
| 114 elemMultDisplayElem.innerText = elemMult; |
| 115 gl.uniform1f(lineWidthLoc, lineWidth); |
| 116 gl.uniform1i(elemMultLoc, elemMult); |
| 117 gl.drawElements(gl.TRIANGLES, gridRes * gridRes * 6, gl.UNSIGNED_SHORT, 0); |
| 118 } |
| 119 |
| 120 successfullyParsed = true; |
| 121 } |
| 122 |
| 123 </script> |
| 124 </body> |
| 125 </html> |
| 126 |
| 127 |
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Chromium Code Reviews
Issue 10399113:
Roll webgl conformance tests to r17874: part 2, adding r17874 (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/