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comparison: content/canvas/test/webgl-conformance/conformance/context/premultiplyalpha-test.html
content/canvas/test/webgl-conformance/conformance/context/premultiplyalpha-test.html
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
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| -1:000000000000 | 0:5cae27b506c6 |
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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>Test the WebGL premultipledAlpha context creation flag.</title> | |
| 11 <link rel="stylesheet" href="../../resources/js-test-style.css"/> | |
| 12 <script src="../../resources/js-test-pre.js"></script> | |
| 13 <script src="../resources/webgl-test.js"> </script> | |
| 14 <script src="../resources/webgl-test-utils.js"> </script> | |
| 15 </head> | |
| 16 <body> | |
| 17 <div id="description"></div><div id="console"></div> | |
| 18 <script> | |
| 19 var wtu = WebGLTestUtils; | |
| 20 | |
| 21 var tests = [ | |
| 22 // If premultipledAlpha is true then | |
| 23 // [texture] [canvas] [dataURL] | |
| 24 // 32, 64, 128, 128 -> 64, 128, 255, 128 -> 64, 128, 255, 128 | |
| 25 { creationAttributes: {}, | |
| 26 sentColor: [32, 64, 128, 128], | |
| 27 expectedColor: [64, 128, 255, 128], | |
| 28 errorRange: 2, | |
| 29 imageFormat: "image/png" | |
| 30 }, | |
| 31 // If premultipledAlpha is true then | |
| 32 // [texture] [canvas] [texture] | |
| 33 // 32, 64, 128, 128 -> 64, 128, 255, 128 -> 64, 128, 255, 128 | |
| 34 { creationAttributes: {}, | |
| 35 sentColor: [32, 64, 128, 128], | |
| 36 expectedColor: [64, 128, 255, 128], | |
| 37 errorRange: 2, | |
| 38 }, | |
| 39 // If premultipledAlpha is false then | |
| 40 // [texture] [canvas] [dataURL] | |
| 41 // 255, 192, 128, 1 -> 255, 192, 128, 1 -> 255, 192, 128, 1 | |
| 42 { creationAttributes: {premultipliedAlpha: false}, | |
| 43 sentColor: [255, 192, 128, 1], | |
| 44 expectedColor: [255, 192, 128, 1], | |
| 45 errorRange: 0, | |
| 46 imageFormat: "image/png" | |
| 47 }, | |
| 48 // If premultipledAlpha is false then | |
| 49 // [texture] [canvas] [texture] | |
| 50 // 255, 192, 128, 1 -> 255, 192, 128, 1 -> 255, 192, 128, 1 | |
| 51 { creationAttributes: {premultipliedAlpha: false}, | |
| 52 sentColor: [255, 192, 128, 1], | |
| 53 expectedColor: [255, 192, 128, 1], | |
| 54 errorRange: 0, | |
| 55 }, | |
| 56 // If premultipledAlpha is false then | |
| 57 // [texture] [canvas] [dataURL] | |
| 58 // 255, 255, 255, 128 -> 255, 255, 255, 128 -> 128, 128, 128, 255 | |
| 59 { creationAttributes: {premultipliedAlpha: false}, | |
| 60 sentColor: [255, 255, 255, 128], | |
| 61 expectedColor: [128, 128, 128, 255], | |
| 62 errorRange: 2, | |
| 63 imageFormat: "image/jpeg" | |
| 64 }, | |
| 65 // If premultipledAlpha is true then | |
| 66 // [texture] [canvas] [dataURL] | |
| 67 // 128, 128, 128, 128 -> 255, 255, 255, 128 -> 128, 128, 128, 255 | |
| 68 { creationAttributes: {}, | |
| 69 sentColor: [128, 128, 128, 128], | |
| 70 expectedColor: [128, 128, 128, 255], | |
| 71 errorRange: 2, | |
| 72 imageFormat: "image/jpeg" | |
| 73 } | |
| 74 ]; | |
| 75 | |
| 76 var g_count = 0; | |
| 77 var gl; | |
| 78 var canvas; | |
| 79 var premultipledAlpha; | |
| 80 | |
| 81 description("Test the WebGL premultipledAlpha context creation flag."); | |
| 82 doNextTest(); | |
| 83 function doNextTest() { | |
| 84 if (g_count < tests.length) { | |
| 85 var test = tests[g_count++]; | |
| 86 canvas = document.createElement("canvas"); | |
| 87 // Need to preserve drawing buffer to load it in a callback | |
| 88 test.creationAttributes.preserveDrawingBuffer = true; | |
| 89 gl = wtu.create3DContext(canvas, test.creationAttributes); | |
| 90 var premultipliedAlpha = test.creationAttributes.premultipliedAlpha != false; | |
| 91 debug("") | |
| 92 debug("testing: premultipliedAlpha: " + premultipliedAlpha + " imageFormat: " + test.imageFormat); | |
| 93 | |
| 94 shouldBe('gl.getContextAttributes().premultipledAlpha', 'premultipledAlpha'); | |
| 95 shouldBeTrue('gl.getContextAttributes().preserveDrawingBuffer'); | |
| 96 | |
| 97 console.log(gl.getContextAttributes()); | |
| 98 var program = wtu.setupTexturedQuad(gl); | |
| 99 | |
| 100 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from setup."); | |
| 101 var tex = gl.createTexture(); | |
| 102 wtu.fillTexture(gl, tex, 2, 2, test.sentColor, 0); | |
| 103 var loc = gl.getUniformLocation(program, "tex"); | |
| 104 gl.uniform1i(loc, 0); | |
| 105 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR); | |
| 106 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); | |
| 107 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); | |
| 108 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); | |
| 109 | |
| 110 wtu.drawQuad(gl); | |
| 111 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from drawing."); | |
| 112 | |
| 113 function loadTexture() { | |
| 114 var pngTex = gl.createTexture(); | |
| 115 // not needed as it's the default | |
| 116 // gl.pixelStorei(gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, false); | |
| 117 gl.pixelStorei(gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, false); | |
| 118 gl.bindTexture(gl.TEXTURE_2D, pngTex); | |
| 119 if (test.imageFormat) { | |
| 120 // create texture from image | |
| 121 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, this); | |
| 122 } else { | |
| 123 // create texture from canvas | |
| 124 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, canvas); | |
| 125 } | |
| 126 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MIN_FILTER, gl.LINEAR); | |
| 127 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_MAG_FILTER, gl.LINEAR); | |
| 128 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_S, gl.CLAMP_TO_EDGE); | |
| 129 gl.texParameteri(gl.TEXTURE_2D, gl.TEXTURE_WRAP_T, gl.CLAMP_TO_EDGE); | |
| 130 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from creating copy."); | |
| 131 wtu.drawQuad(gl); | |
| 132 glErrorShouldBe(gl, gl.NO_ERROR, "Should be no errors from 2nd drawing."); | |
| 133 wtu.checkCanvas( | |
| 134 gl, test.expectedColor, | |
| 135 "should draw with " + test.expectedColor, test.errorRange); | |
| 136 | |
| 137 doNextTest(); | |
| 138 } | |
| 139 | |
| 140 if (test.imageFormat) { | |
| 141 // Load canvas into string using toDataURL | |
| 142 var imageUrl = canvas.toDataURL(test.imageFormat); | |
| 143 if (test.imageFormat != "image/png" && | |
| 144 (imageUrl.indexOf("data:image/png,") == 0 || | |
| 145 imageUrl.indexOf("data:image/png;") == 0)) { | |
| 146 debug("Image format " + test.imageFormat + " not supported; skipping"); | |
| 147 setTimeout(doNextTest, 0); | |
| 148 } else { | |
| 149 // Load string into the texture | |
| 150 var input = document.createElement("img"); | |
| 151 input.onload = loadTexture; | |
| 152 input.src = imageUrl; | |
| 153 } | |
| 154 } else { | |
| 155 // Load canvas into the texture asynchronously (to prevent unbounded stack consumption) | |
| 156 setTimeout(loadTexture, 0); | |
| 157 } | |
| 158 } else { | |
| 159 successfullyParsed = true; | |
| 160 finishTest(); | |
| 161 } | |
| 162 } | |
| 163 | |
| 164 </script> | |
| 165 | |
| 166 </body> | |
| 167 </html> | |
| 168 | |
| 169 |
