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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 != fals
e; |
| 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, th
is); |
| 122 } else { |
| 123 // create texture from canvas |
| 124 gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, ca
nvas); |
| 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 sta
ck 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 |
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Chromium Code Reviews
Issue 8342021:
Add webgl conformance tests r15841. (Closed)
Base URL: svn://chrome-svn/chrome/trunk/deps/third_party/webgl/sdk/tests/