roiFragmentShaderRGB_glsl.h
00001
00002 static const std::string roiFragmentShaderRGB_glsl = "/* Copyright (c) 2009 Maxim Makhinya\n *\n * This library is free software; you can redistribute it and/or modify it under\n * the terms of the GNU Lesser General Public License version 2.1 as published\n * by the Free Software Foundation.\n * \n * This library is distributed in the hope that it will be useful, but WITHOUT\n * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS\n * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more\n * details.\n * \n * You should have received a copy of the GNU Lesser General Public License\n * along with this library; if not, write to the Free Software Foundation, Inc.,\n * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.\n */\n \n uniform sampler2DRect texture;\n \n void main(void)\n {\n vec2 pos = (gl_FragCoord.xy - vec2( 0.5, 0.5 ))*16.0;\n \n float bg = 1.0;\n \n vec3 s;\n for( float y = .0; y < 15.1; y+=2.0 )\n {\n if( bg < .5 )\n break;\n for( float x = .0; x < 15.1; x+=2.0 )\n {\n s = texture2DRect( texture, pos + vec2( x, y )).rgb;\n if( s != vec3( .0, .0, .0 ))\n {\n bg = .0;\n break;\n }\n }\n }\n for( float y = 1.0; y < 15.1; y+=2.0 )\n {\n if( bg < .5 )\n break;\n for( float x = 1.0; x < 15.1; x+=2.0 )\n {\n s = texture2DRect( texture, pos + vec2( x, y )).rgb;\n \n if( s != vec3( .0, .0, .0 ))\n {\n bg = .0;\n break;\n }\n }\n }\n for( float y = .0; y < 15.1; y+=2.0 )\n {\n if( bg < .5 )\n break;\n for( float x = 1.0; x < 15.1; x+=2.0 )\n {\n s = texture2DRect( texture, pos + vec2( x, y )).rgb;\n \n if( s != vec3( .0, .0, .0 ))\n {\n bg = .0;\n break;\n }\n }\n }\n for( float y = 1.0; y < 15.1; y+=2.0 )\n {\n if( bg < .5 )\n break;\n for( float x = .0; x < 15.1; x+=2.0 )\n {\n s = texture2DRect( texture, pos + vec2( x, y )).rgb;\n \n if( s != vec3( .0, .0, .0 ))\n {\n bg = .0;\n break;\n }\n }\n }\n \n gl_FragColor = vec4( bg, .0, .0, .0 );\n }\n ";
1.5.8