tizen-web-ui-fw/latest/js/src/widgets/components/webgl.js

   1 \r
   2 /* ***************************************************************************\r
   3  * Copyright (c) 2000 - 2011 Samsung Electronics Co., Ltd.\r
   4  *\r
   5  * Permission is hereby granted, free of charge, to any person obtaining a\r
   6  * copy of this software and associated documentation files (the "Software"),\r
   7  * to deal in the Software without restriction, including without limitation\r
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,\r
   9  * and/or sell copies of the Software, and to permit persons to whom the\r
  10  * Software is furnished to do so, subject to the following conditions:\r
  11  *\r
  12  * The above copyright notice and this permission notice shall be included in\r
  13  * all copies or substantial portions of the Software.\r
  14  *\r
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\r
  18  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\r
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\r
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER\r
  21  * DEALINGS IN THE SOFTWARE.\r
  22  * ***************************************************************************\r
  23  *\r
  24  * Authors: Hyunsook Park <hyunsook.park@samsung.com>\r
  25  *                      Wonseop Kim <wonseop.kim@samsung.com>\r
  26 */\r
  27 \r
  28 ( function ( $, undefined ) {\r
  29         $.webgl = {};\r
  30 \r
  31         $.webgl.shader = {\r
  32                 _vertexShader: null,\r
  33                 _fragmentShader: null,\r
  34 \r
  35                 deleteShaders: function ( gl ) {\r
  36                         gl.deleteShader( this._vertexShader );\r
  37                         gl.deleteShader( this._fragmentShader );\r
  38                 },\r
  39 \r
  40                 addShaderProgram : function ( gl, vs, fs, isFile ) {\r
  41                         var shaderProgram,\r
  42                                 vertexShaderSource = {},\r
  43                                 fragmentShaderSource = {};\r
  44 \r
  45                         if ( isFile ) {\r
  46                                 vertexShaderSource = this.loadShaderFile( vs );\r
  47                                 fragmentShaderSource = this.loadShaderFile( fs );\r
  48                         } else {\r
  49                                 vertexShaderSource.source = vs;\r
  50                                 fragmentShaderSource.source = fs;\r
  51                         }\r
  52 \r
  53                         this._vertexShader = this.getShader( gl, gl.VERTEX_SHADER, vertexShaderSource );\r
  54                         this._fragmentShader = this.getShader( gl, gl.FRAGMENT_SHADER, fragmentShaderSource );\r
  55 \r
  56                         shaderProgram = gl.createProgram();\r
  57                         gl.attachShader( shaderProgram, this._vertexShader);\r
  58                         gl.attachShader( shaderProgram, this._fragmentShader);\r
  59                         gl.linkProgram( shaderProgram );\r
  60 \r
  61                         if ( !gl.getProgramParameter( shaderProgram, gl.LINK_STATUS ) ) {\r
  62                                 window.alert( "Could not initialize Shaders!" );\r
  63                         }\r
  64                         return shaderProgram;\r
  65                 },\r
  66 \r
  67                 loadShaderFile : function ( path ) {\r
  68                         var cache = null;\r
  69                         $.ajax({\r
  70                                 async : false,\r
  71                                 url : path,\r
  72                                 success : function ( result ) {\r
  73                                         cache = {\r
  74                                                 source: result\r
  75                                         };\r
  76                                 }\r
  77                         });\r
  78                         return cache;\r
  79                 },\r
  80 \r
  81                 getShader: function ( gl, type, script ) {\r
  82                         var shader;\r
  83 \r
  84                         if ( !gl || !type || !script ) {\r
  85                                 return null;\r
  86                         }\r
  87 \r
  88                         shader = gl.createShader( type );\r
  89 \r
  90                         gl.shaderSource( shader, script.source );\r
  91                         gl.compileShader( shader );\r
  92 \r
  93                         if ( !gl.getShaderParameter( shader, gl.COMPILE_STATUS ) ) {\r
  94                                 window.alert( gl.getShaderInfoLog( shader ) );\r
  95                                 gl.deleteShader( shader );\r
  96                                 return null;\r
  97                         }\r
  98                         return shader;\r
  99                 }\r
 100         };\r
 101 \r
 102         $.webgl.buffer = {\r
 103                 attribBufferData: function ( gl, attribArray ) {\r
 104                         var attribBuffer = gl.createBuffer();\r
 105 \r
 106                         gl.bindBuffer( gl.ARRAY_BUFFER, attribBuffer );\r
 107                         gl.bufferData( gl.ARRAY_BUFFER, attribArray, gl.STATIC_DRAW );\r
 108                         gl.bindBuffer( gl.ARRAY_BUFFER, null );\r
 109 \r
 110                         return attribBuffer;\r
 111                 }\r
 112         };\r
 113 \r
 114 } ( jQuery ) );\r
 115 \r