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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 pixelStorei Test</title> |
| 33 <link rel="stylesheet" href="../../resources/js-test-style.css"/> |
| 34 <script src="../../resources/js-test-pre.js"></script> |
| 35 <script src="../resources/webgl-test.js"> </script> |
| 36 <script src="../../resources/desktop-gl-constants.js" type="text/javascript"></s
cript> |
| 37 </head> |
| 38 <body> |
| 39 <canvas id="example" width="50" height="50"></canvas> |
| 40 <canvas id="2d00" width="50" height="50"></canvas> |
| 41 <canvas id="2d01" width="50" height="50"></canvas> |
| 42 <canvas id="2d02" width="50" height="50"></canvas> |
| 43 <canvas id="2d03" width="50" height="50"></canvas> |
| 44 <div id="description"></div> |
| 45 <div id="console"></div> |
| 46 <script id="vshader" type="x-shader/x-vertex"> |
| 47 attribute vec4 vPosition; |
| 48 void main() { |
| 49 gl_Position = vPosition; |
| 50 } |
| 51 </script> |
| 52 |
| 53 <script id="fshader" type="x-shader/x-fragment"> |
| 54 void main() { |
| 55 gl_FragColor = vec4(1.0,0.0,0.0,1.0); |
| 56 } |
| 57 </script> |
| 58 |
| 59 <script> |
| 60 function fail(x,y, name, buf, shouldBe) { |
| 61 var i = (y*50+x) * 4; |
| 62 var reason = "pixel in "+name+" at ("+x+","+y+") is ("+buf[i]+","+buf[i+1]+","
+buf[i+2]+","+buf[i+3]+"), should be "+shouldBe; |
| 63 testFailed(reason); |
| 64 } |
| 65 |
| 66 function pass(name) { |
| 67 testPassed("drawing is correct in " + name); |
| 68 } |
| 69 |
| 70 function init() { |
| 71 description("This test checks that drawImage and readPixels are not effected b
y gl.Pixelstorei(gl.PACK_ALIGNMENT) and visa versa"); |
| 72 |
| 73 debug("There should be 5 red triangles on 5 black squares above"); |
| 74 debug(""); |
| 75 |
| 76 var canvas3d = document.getElementById("example"); |
| 77 gl = initWebGL("example"); |
| 78 program = setupProgram(gl, "vshader", "fshader", [ "vPosition"]); |
| 79 |
| 80 var vertexObject = gl.createBuffer(); |
| 81 gl.bindBuffer(gl.ARRAY_BUFFER, vertexObject); |
| 82 gl.bufferData(gl.ARRAY_BUFFER, new Float32Array([ 0,0.5,0, -0.5,-0.5,0, 0.5,-0
.5,0 ]), gl.STATIC_DRAW); |
| 83 gl.enableVertexAttribArray(0); |
| 84 gl.vertexAttribPointer(0, 3, gl.FLOAT, false, 0, 0); |
| 85 |
| 86 gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT); |
| 87 gl.drawArrays(gl.TRIANGLES, 0, 3); |
| 88 |
| 89 |
| 90 function checkData(buf, name) { |
| 91 // Test several locations |
| 92 // First line should be all black |
| 93 for (var i = 0; i < 50; ++i) { |
| 94 if (buf[i*4] != 0 || buf[i*4+1] != 0 || buf[i*4+2] != 0 || buf[i*4+3] != 2
55) { |
| 95 fail(i, 0, name, buf, "(0,0,0,255)"); |
| 96 return; |
| 97 } |
| 98 } |
| 99 |
| 100 // Line 25 should be red for at least 6 red pixels starting 22 pixels in |
| 101 var offset = (25*50+22) * 4; |
| 102 for (var i = 0; i < 6; ++i) { |
| 103 if (buf[offset+i*4] != 255 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2]
!= 0 || buf[offset+i*4+3] != 255) { |
| 104 fail(22 + i, 25, name, buf, "(255,0,0,255)"); |
| 105 return; |
| 106 } |
| 107 } |
| 108 |
| 109 // Last line should be all black |
| 110 offset = (49*50) * 4; |
| 111 for (var i = 0; i < 50; ++i) { |
| 112 if (buf[offset+i*4] != 0 || buf[offset+i*4+1] != 0 || buf[offset+i*4+2] !=
0 || buf[offset+i*4+3] != 255) { |
| 113 fail(i, 49, name, buf, "(0,0,0,255)"); |
| 114 return; |
| 115 } |
| 116 } |
| 117 |
| 118 pass(name); |
| 119 } |
| 120 |
| 121 function checkColors() { |
| 122 var buf = new Uint8Array(50 * 50 * 4); |
| 123 gl.readPixels(0, 0, 50, 50, gl.RGBA, gl.UNSIGNED_BYTE, buf); |
| 124 checkData(buf, "3d context"); |
| 125 var imgData = ctx2d.getImageData(0, 0, 50, 50); |
| 126 checkData(imgData.data, "2d context"); |
| 127 } |
| 128 |
| 129 var table = [1, 2, 4, 8]; |
| 130 for (var ii = 0; ii < table.length; ++ii) { |
| 131 gl.pixelStorei(gl.PACK_ALIGNMENT, table[ii]); |
| 132 ctx2d = document.getElementById("2d0" + ii).getContext("2d"); |
| 133 ctx2d.globalCompositeOperation = 'copy'; |
| 134 ctx2d.drawImage(canvas3d, 0, 0); |
| 135 checkColors(); |
| 136 assertMsg(gl.getParameter(gl.PACK_ALIGNMENT) == table[ii], |
| 137 "PACK_ALIGNMENT is " + table[ii]); |
| 138 } |
| 139 } |
| 140 |
| 141 init(); |
| 142 successfullyParsed = true; |
| 143 </script> |
| 144 <script src="../../resources/js-test-post.js"></script> |
| 145 |
| 146 </body> |
| 147 </html> |
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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/