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| 1 <!-- | |
| 2 Copyright (c) 2011 The Chromium Authors. All rights reserved. | |
| 3 Use of this source code is governed by a BSD-style license that can be | |
| 4 found in the LICENSE file. | |
| 5 --> | |
| 6 <!DOCTYPE html> | |
| 7 <html> | |
| 8 <head> | |
| 9 <meta charset="utf-8"> | |
| 10 <title>WebGL Canvas Conformance Tests</title> | |
| 11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> | |
| 12 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></s
cript> | |
| 13 <script src="../../resources/js-test-pre.js"></script> | |
| 14 <script src="../resources/webgl-test.js"></script> | |
| 15 </head> | |
| 16 <body> | |
| 17 <div id="description"></div> | |
| 18 <div id="console"></div> | |
| 19 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas> | |
| 20 <canvas id="canvas2d" width="40" height="40"> </canvas> | |
| 21 <script> | |
| 22 if (window.initNonKhronosFramework) { | |
| 23 window.initNonKhronosFramework(true); | |
| 24 } | |
| 25 | |
| 26 description("This test ensures WebGL implementations interact correctly with the
canvas tag."); | |
| 27 | |
| 28 debug(""); | |
| 29 debug("Canvas.getContext"); | |
| 30 | |
| 31 var err; | |
| 32 var canvas = document.getElementById("canvas"); | |
| 33 var canvas2d = document.getElementById("canvas2d"); | |
| 34 var ctx2d = canvas2d.getContext("2d"); | |
| 35 var gl = create3DContext(canvas); | |
| 36 if (!gl) { | |
| 37 testFailed("context does not exist"); | |
| 38 } else { | |
| 39 testPassed("context exists"); | |
| 40 | |
| 41 debug(""); | |
| 42 debug("Checking canvas and WebGL interaction"); | |
| 43 | |
| 44 // Check that a canvas with no width or height is 300x150 pixels | |
| 45 shouldBe('canvas.width', '300'); | |
| 46 shouldBe('canvas.height', '150'); | |
| 47 | |
| 48 // Check get a 4 value gl parameter as a csv string. | |
| 49 function getValue4v(name) { | |
| 50 var v = gl.getParameter(name); | |
| 51 var result = '' + | |
| 52 v[0] + ',' + | |
| 53 v[1] + ',' + | |
| 54 v[2] + ',' + | |
| 55 v[3]; | |
| 56 return result; | |
| 57 } | |
| 58 | |
| 59 function getViewport() { | |
| 60 return getValue4v(gl.VIEWPORT); | |
| 61 } | |
| 62 | |
| 63 function getClearColor() { | |
| 64 return getValue4v(gl.COLOR_CLEAR_VALUE); | |
| 65 } | |
| 66 | |
| 67 function isAboutEqual(a, b) { | |
| 68 return Math.abs(a - b) < 0.01; | |
| 69 } | |
| 70 | |
| 71 function isAboutEqualInt(a, b) { | |
| 72 return Math.abs(a - b) < 3; | |
| 73 } | |
| 74 | |
| 75 function checkCanvasContentIs(r3d,g3d,b3d,a3d) { | |
| 76 var r2d; | |
| 77 var g2d; | |
| 78 var b2d; | |
| 79 var a2d; | |
| 80 | |
| 81 function checkPixel(x, y, r3d,g3d,b3d,a3d) { | |
| 82 var offset = (y * 40 + x) * 4; | |
| 83 r2d = imgData.data[offset]; | |
| 84 g2d = imgData.data[offset + 1]; | |
| 85 b2d = imgData.data[offset + 2]; | |
| 86 a2d = imgData.data[offset + 3]; | |
| 87 //debug('' + x + ', ' + y + "(" + offset + ") = " + r2d + ", " + g2d + ",
" + b2d + ", " + a2d); | |
| 88 return isAboutEqualInt(r2d, r3d) && | |
| 89 isAboutEqualInt(g2d, g3d) && | |
| 90 isAboutEqualInt(b2d, b3d) && | |
| 91 isAboutEqualInt(a2d, a3d); | |
| 92 } | |
| 93 | |
| 94 function checkPixels(r3d,g3d,b3d,a3d) { | |
| 95 return checkPixel(0, 0, r3d, g3d, b3d, a3d) && | |
| 96 checkPixel(0, 39, r3d, g3d, b3d, a3d) && | |
| 97 checkPixel(39, 0, r3d, g3d, b3d, a3d) && | |
| 98 checkPixel(39, 39, r3d, g3d, b3d, a3d) && | |
| 99 checkPixel(0, 0, r3d, g3d, b3d, a3d); | |
| 100 }; | |
| 101 | |
| 102 // Set to just take the color from the 3d canvas | |
| 103 ctx2d.globalCompositeOperation = 'copy'; | |
| 104 | |
| 105 // fill 2d canvas with orange | |
| 106 ctx2d.fillStyle = "rgb(255,192,128)"; | |
| 107 ctx2d.fillRect (0, 0, 40, 40); | |
| 108 | |
| 109 // get the image data | |
| 110 var imgData = ctx2d.getImageData(0, 0, 40, 40); | |
| 111 | |
| 112 // check it got cleared. | |
| 113 if (!checkPixels(255, 192, 128, 255)) { | |
| 114 testFailed("unable to fill 2d context."); | |
| 115 return; | |
| 116 } | |
| 117 | |
| 118 // draw 3d canvas on top. | |
| 119 ctx2d.drawImage(canvas, 0,0, 40, 40); | |
| 120 | |
| 121 // get the image data | |
| 122 var imgData = ctx2d.getImageData(0, 0, 40, 40); | |
| 123 | |
| 124 // Check it's the expected color. | |
| 125 if (!checkPixels(r3d, g3d, b3d, a3d)) { | |
| 126 testFailed("pixels are " + r2d + "," + g2d + "," + b2d + "," + a2d + | |
| 127 " expected " + r3d + "," + g3d + "," + b3d + "," + a3d); | |
| 128 } else { | |
| 129 testPassed("pixels are " + r3d + "," + g3d + "," + b3d + "," + a3d); | |
| 130 } | |
| 131 } | |
| 132 | |
| 133 checkCanvasContentIs(0, 0, 0, 0); | |
| 134 shouldBe('getViewport()', '"0,0,300,150"'); | |
| 135 | |
| 136 // Change the display size of the canvas and check | |
| 137 // the viewport size does not change. | |
| 138 debug(""); | |
| 139 debug("change display size of canvas and see that viewport does not change"); | |
| 140 canvas.style.width = "100px"; | |
| 141 canvas.style.height = "25px"; | |
| 142 var intervalId; | |
| 143 intervalId = window.setInterval(function() { | |
| 144 if (canvas.clientWidth == 100 && | |
| 145 canvas.clientHeight == 25) { | |
| 146 window.clearInterval(intervalId); | |
| 147 shouldBe('getViewport()', '"0,0,300,150"'); | |
| 148 shouldBe('canvas.width', '300'); | |
| 149 shouldBe('canvas.height', '150'); | |
| 150 | |
| 151 // Change the actual size of the canvas | |
| 152 // Check that the viewport does not change. | |
| 153 // Check that the clear color does not change. | |
| 154 // Check that the color mask does not change. | |
| 155 debug(""); | |
| 156 debug("change the actual size of the canvas and see that the viewport does
not change"); | |
| 157 gl.clearColor(0.25, 0.5, 0.75, 1); | |
| 158 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); | |
| 159 checkCanvasContentIs(64, 128, 192, 255); | |
| 160 gl.colorMask(0,0,0,0); | |
| 161 glErrorShouldBe(gl, gl.NO_ERROR, "No GL errors before resizing the canvas"
); | |
| 162 canvas.width = 400; | |
| 163 canvas.height = 10; | |
| 164 err = gl.getError(); | |
| 165 // Some implementations might lost the context when resizing | |
| 166 if (err != gl.CONTEXT_LOST_WEBGL) { | |
| 167 shouldBe("err", "gl.NO_ERROR"); | |
| 168 var v = gl.getParameter(gl.COLOR_CLEAR_VALUE); | |
| 169 assertMsg(isAboutEqual(v[0], 0.25) && | |
| 170 isAboutEqual(v[1], 0.5) && | |
| 171 isAboutEqual(v[2], 0.75) && | |
| 172 isAboutEqual(v[3], 1), | |
| 173 "gl.clearColor should not change after canvas resize"); | |
| 174 v = gl.getParameter(gl.COLOR_WRITEMASK); | |
| 175 assertMsg(isAboutEqual(v[0], 0) && | |
| 176 isAboutEqual(v[1], 0) && | |
| 177 isAboutEqual(v[2], 0) && | |
| 178 isAboutEqual(v[3], 0), | |
| 179 "gl.colorMask should not change after canvas resize"); | |
| 180 shouldBe('getViewport()', '"0,0,300,150"'); | |
| 181 checkCanvasContentIs(0, 0, 0, 0); | |
| 182 } | |
| 183 | |
| 184 debug(""); | |
| 185 finishTest(); | |
| 186 } | |
| 187 }, 1000/30); | |
| 188 } | |
| 189 </script> | |
| 190 | |
| 191 </body> | |
| 192 </html> | |
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Chromium Code Reviews
Issue 9360034:
Remove everthing except conformance tests in the deps/third_party/webgl (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/