Line data    Source code

       1             : // Generated file - Edit yuv420readback.glsl!
       2             : #include <string>
       3           6 : static const std::string yuv420readback_glsl =
       4             :     "/* Copyright (c) 2009       Maxim Makhinya\n  *\n  * This library is free "
       5             :     "software; you can redistribute it and/or modify it under\n  * the terms "
       6             :     "of the GNU Lesser General Public License as published by the Free\n  * "
       7             :     "Software Foundation; either version 2.1 of the License, or (at your "
       8             :     "option)\n  * any later version.\n  *  \n  * This library is distributed "
       9             :     "in the hope that it will be useful, but WITHOUT\n  * ANY WARRANTY; "
      10             :     "without even the implied warranty of MERCHANTABILITY or FITNESS\n  * FOR "
      11             :     "A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for "
      12             :     "more\n  * details.\n  * \n  * You should have received a copy of the GNU "
      13             :     "Lesser General Public License\n  * along with this library; if not, write "
      14             :     "to the Free Software Foundation, Inc.,\n  * 51 Franklin Street, Fifth "
      15             :     "Floor, Boston, MA 02110-1301 USA.\n  */\n \n uniform sampler2DRect "
      16             :     "color;\n \n vec4 yMul = vec4( 0.299 , 0.587 , 0.114 , 0.0 );\n vec4 uMul "
      17             :     "= vec4(-0.147 ,-0.289 , 0.436 , 0.0 );\n vec4 vMul = vec4( "
      18             :     "0.4996,-0.4184,-0.0812, 0.0 );\n /*vec4 vMul = vec4( "
      19             :     "0.2896,-0.2084,-0.0802, 0.0 );*/\n \n vec4 test = vec4( 1.0, 1.0, 1.0, "
      20             :     "0.0 );\n \n void main(void)\n {\n     vec2 pos = gl_FragCoord.xy - vec2( "
      21             :     "0.5, 0.5 );\n     pos.x = pos.x * 2.0;\n \n     float odd = fract( "
      22             :     "pos.y*0.5 );\n     float hor;\n     if( odd < 0.5 )\n         hor =  "
      23             :     "1.0;\n     else\n         hor = -1.0;\n \n     vec4 p1 = texture2DRect( "
      24             :     "color, pos );\n     vec4 p2 = texture2DRect( color, pos + vec2( 1.0, 0.0 "
      25             :     "));\n     vec4 p3 = texture2DRect( color, pos + vec2( 0.0, hor ));\n     "
      26             :     "vec4 p4 = texture2DRect( color, pos + vec2( 1.0, hor ));\n \n     float n "
      27             :     "= 0.0;\n     vec4  p = vec4( .0, .0, .0, .0 );\n \n     if( dot( p1, test "
      28             :     ") > .0 ) { n += 1.0; p += p1; }\n     if( dot( p2, test ) > .0 ) { n += "
      29             :     "1.0; p += p2; }\n     if( dot( p3, test ) > .0 ) { n += 1.0; p += p3; }\n "
      30             :     "    if( dot( p4, test ) > .0 ) { n += 1.0; p += p4; }\n \n     float cVal "
      31             :     "= 0.0;\n     if( n > 0.0 )\n     {\n         p /= n;\n \n         if( odd "
      32             :     "< 0.5 )\n             cVal = dot(p,uMul);\n         else\n             "
      33             :     "cVal = dot(p,vMul);\n     }\n //    cVal = 0.0;\n     gl_FragColor = "
      34             :     "vec4( dot(p1,yMul), dot(p2,yMul), cVal+0.5, (p1.a+p2.a)/2.0 );\n }\n \n ";