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| 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" | |
| 2 "http://www.w3.org/TR/html4/loose.dtd"> | |
| 3 <html> | |
| 4 <head> | |
| 5 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| 6 <title>WebGL Canvas Conformance Tests</title> | |
| 7 <script src="resources/desktop-gl-constants.js" type="text/javascript"></script> | |
| 8 <script src="../../../resources/js-test.js"></script> | |
| 9 <script src="resources/webgl-test.js"></script> | |
| 10 <script src="../../../resources/run-after-layout-and-paint.js"></script> | |
| 11 </head> | |
| 12 <body> | |
| 13 <div id="description"></div> | |
| 14 <div id="console"></div> | |
| 15 <canvas id="canvas" style="width: 50px; height: 50px;"> </canvas> | |
| 16 <canvas id="canvas2d" width="40" height="40"> </canvas> | |
| 17 <script> | |
| 18 jsTestIsAsync = true; | |
| 19 if (window.initNonKhronosFramework) { | |
| 20 window.initNonKhronosFramework(true); | |
| 21 } | |
| 22 | |
| 23 description("This test ensures WebGL implementations interact correctly with the
canvas tag."); | |
| 24 | |
| 25 debug(""); | |
| 26 debug("Canvas.getContext"); | |
| 27 | |
| 28 var canvas = document.getElementById("canvas"); | |
| 29 var canvas2d = document.getElementById("canvas2d"); | |
| 30 var ctx2d = canvas2d.getContext("2d"); | |
| 31 var gl = create3DContext(canvas); | |
| 32 if (!gl) { | |
| 33 testFailed("context does not exist"); | |
| 34 } else { | |
| 35 testPassed("context exists"); | |
| 36 | |
| 37 debug(""); | |
| 38 debug("Checking canvas and WebGL interaction"); | |
| 39 | |
| 40 // Check that a canvas with no width or height is 300x150 pixels | |
| 41 shouldBe('canvas.width', '300'); | |
| 42 shouldBe('canvas.height', '150'); | |
| 43 | |
| 44 // Check get a 4 value gl parameter as a csv string. | |
| 45 function getValue4v(name) { | |
| 46 var v = gl.getParameter(name); | |
| 47 var result = '' + | |
| 48 v[0] + ',' + | |
| 49 v[1] + ',' + | |
| 50 v[2] + ',' + | |
| 51 v[3]; | |
| 52 return result; | |
| 53 } | |
| 54 | |
| 55 function getViewport() { | |
| 56 return getValue4v(gl.VIEWPORT); | |
| 57 } | |
| 58 | |
| 59 function getClearColor() { | |
| 60 return getValue4v(gl.COLOR_CLEAR_VALUE); | |
| 61 } | |
| 62 | |
| 63 function isAboutEqual(a, b) { | |
| 64 return Math.abs(a - b) < 0.01; | |
| 65 } | |
| 66 | |
| 67 function isAboutEqualInt(a, b) { | |
| 68 return Math.abs(a - b) < 3; | |
| 69 } | |
| 70 | |
| 71 function checkCanvasContentIs(r3d,g3d,b3d,a3d) { | |
| 72 var r2d; | |
| 73 var g2d; | |
| 74 var b2d; | |
| 75 var a2d; | |
| 76 | |
| 77 function checkPixel(x, y, r3d,g3d,b3d,a3d) { | |
| 78 var offset = (y * 40 + x) * 4; | |
| 79 r2d = imgData.data[offset]; | |
| 80 g2d = imgData.data[offset + 1]; | |
| 81 b2d = imgData.data[offset + 2]; | |
| 82 a2d = imgData.data[offset + 3]; | |
| 83 //debug('' + x + ', ' + y + "(" + offset + ") = " + r2d + ", " + g2d + ",
" + b2d + ", " + a2d); | |
| 84 return isAboutEqualInt(r2d, r3d) && | |
| 85 isAboutEqualInt(g2d, g3d) && | |
| 86 isAboutEqualInt(b2d, b3d) && | |
| 87 isAboutEqualInt(a2d, a3d); | |
| 88 } | |
| 89 | |
| 90 function checkPixels(r3d,g3d,b3d,a3d) { | |
| 91 return checkPixel(0, 0, r3d, g3d, b3d, a3d) && | |
| 92 checkPixel(0, 39, r3d, g3d, b3d, a3d) && | |
| 93 checkPixel(39, 0, r3d, g3d, b3d, a3d) && | |
| 94 checkPixel(39, 39, r3d, g3d, b3d, a3d) && | |
| 95 checkPixel(0, 0, r3d, g3d, b3d, a3d); | |
| 96 }; | |
| 97 | |
| 98 // Set to just take the color from the 3d canvas | |
| 99 ctx2d.globalCompositeOperation = 'copy'; | |
| 100 | |
| 101 // fill 2d canvas with orange | |
| 102 ctx2d.fillStyle = "rgb(255,192,128)"; | |
| 103 ctx2d.fillRect (0, 0, 40, 40); | |
| 104 | |
| 105 // get the image data | |
| 106 var imgData = ctx2d.getImageData(0, 0, 40, 40); | |
| 107 | |
| 108 // check it got cleared. | |
| 109 if (!checkPixels(255, 192, 128, 255)) { | |
| 110 testFailed("unable to fill 2d context."); | |
| 111 return; | |
| 112 } | |
| 113 | |
| 114 // draw 3d canvas on top. | |
| 115 ctx2d.drawImage(canvas, 0,0, 40, 40); | |
| 116 | |
| 117 // get the image data | |
| 118 var imgData = ctx2d.getImageData(0, 0, 40, 40); | |
| 119 | |
| 120 // Check it's the expected color. | |
| 121 if (!checkPixels(r3d, g3d, b3d, a3d)) { | |
| 122 testFailed("pixels are " + r2d + "," + g2d + "," + b2d + "," + a2d + | |
| 123 " expected " + r3d + "," + g3d + "," + b3d + "," + a3d); | |
| 124 } else { | |
| 125 testPassed("pixels are " + r3d + "," + g3d + "," + b3d + "," + a3d); | |
| 126 } | |
| 127 } | |
| 128 | |
| 129 checkCanvasContentIs(0, 0, 0, 0); | |
| 130 shouldBe('getViewport()', '"0,0,300,150"'); | |
| 131 | |
| 132 // Change the display size of the canvas and check | |
| 133 // the viewport size does not change. | |
| 134 debug(""); | |
| 135 debug("change display size of canvas and see that viewport does not change"); | |
| 136 canvas.style.width = "100px"; | |
| 137 canvas.style.height = "25px"; | |
| 138 runAfterLayoutAndPaint(function() { | |
| 139 if (canvas.clientWidth == 100 && | |
| 140 canvas.clientHeight == 25) { | |
| 141 shouldBe('getViewport()', '"0,0,300,150"'); | |
| 142 shouldBe('canvas.width', '300'); | |
| 143 shouldBe('canvas.height', '150'); | |
| 144 | |
| 145 // Change the actual size of the canvas | |
| 146 // Check that the viewport does not change. | |
| 147 // Check that the clear color does not change. | |
| 148 // Check that the color mask does not change. | |
| 149 debug(""); | |
| 150 debug("change the actual size of the canvas and see that the viewport does
not change"); | |
| 151 gl.clearColor(0.25, 0.5, 0.75, 1); | |
| 152 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); | |
| 153 checkCanvasContentIs(64, 128, 192, 255); | |
| 154 gl.colorMask(0,0,0,0); | |
| 155 canvas.width = 400; | |
| 156 canvas.height = 10; | |
| 157 | |
| 158 var v = gl.getParameter(gl.COLOR_CLEAR_VALUE); | |
| 159 assertMsg(isAboutEqual(v[0], 0.25) && | |
| 160 isAboutEqual(v[1], 0.5) && | |
| 161 isAboutEqual(v[2], 0.75) && | |
| 162 isAboutEqual(v[3], 1), | |
| 163 "gl.clearColor should not change after canvas resize"); | |
| 164 v = gl.getParameter(gl.COLOR_WRITEMASK); | |
| 165 assertMsg(isAboutEqual(v[0], 0) && | |
| 166 isAboutEqual(v[1], 0) && | |
| 167 isAboutEqual(v[2], 0) && | |
| 168 isAboutEqual(v[3], 0), | |
| 169 "gl.colorMask should not change after canvas resize"); | |
| 170 shouldBe('getViewport()', '"0,0,300,150"'); | |
| 171 checkCanvasContentIs(0, 0, 0, 0); | |
| 172 | |
| 173 debug(""); | |
| 174 | |
| 175 finishJSTest(); | |
| 176 } | |
| 177 }); | |
| 178 } | |
| 179 | |
| 180 </script> | |
| 181 <script> | |
| 182 </script> | |
| 183 | |
| 184 </body> | |
| 185 </html> | |
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Chromium Code Reviews
Issue 1601093008:
Remove duplicated WebGL layout tests. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master