QVision: Qt's Image, Video and Computer Vision Library

00001 /*
00002  *      Copyright (C) 2011, 2012. PARP Research Group.
00003  *      <http://perception.inf.um.es>
00004  *      University of Murcia, Spain.
00005  *
00006  *      This file is part of the QVision library.
00007  *
00008  *      QVision is free software: you can redistribute it and/or modify
00009  *      it under the terms of the GNU Lesser General Public License as
00010  *      published by the Free Software Foundation, version 3 of the License.
00011  *
00012  *      QVision is distributed in the hope that it will be useful,
00013  *      but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  *      GNU Lesser General Public License for more details.
00016  *
00017  *      You should have received a copy of the GNU Lesser General Public
00018  *      License along with QVision. If not, see <http://www.gnu.org/licenses/>.
00019  */
00020 
00024 
00025 #include <qvgpukltflow.h>
00026 
00027 //#define _POSIX_SOURCE
00028 #include <stdlib.h>
00029 void initShadersEnvironment()
00030     {
00031     #ifdef V3D_SHADER_PATH
00032         setenv("V3D_SHADER_DIR", V3D_SHADER_PATH, 0);
00033     #else
00034         std::cout << "[initShadersEnvironment] Warking: no V3D_SHADER_PATH variable defined at 'config.pri'." << std::endl;
00035     #endif
00036     }
00037 
00038 #include <iostream>
00039 #include <QGLPixelBuffer>
00040 // Function to init GLEW and CG system (called just once):
00041 void InitGLEWCg()
00042     {
00043     // Off-screen buffer (just to use its context isolatedly, in order to be used by the GPU process
00044     // avoiding conflict with the rest of QGLWidgets of the application):
00045     QGLPixelBuffer *pixelbuffer;
00046 
00047     // In fact any size is valid for the initial QGLPixelBuffer (the really important thing is
00048     // to call tracker->allocate and tracker->deallocate functions with a correct size afterwards,
00049     // depending on the image input size:
00050     pixelbuffer = new QGLPixelBuffer(   QSize(720,576), // GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE
00051                         QGLFormat(QGL::DoubleBuffer|QGL::DepthBuffer|QGL::Rgba));
00052 
00053     // With this current buffer we init GLEW and Cg:
00054     pixelbuffer->makeCurrent();
00055     std::cout << "GLEW initialization:" << std::endl;
00056     GLenum err =  glewInit();
00057     if (GLEW_OK != err)
00058         std::cout << "Error initializing GLEW: " << glewGetErrorString(err) << std::endl;
00059     else
00060         std::cout << "OK initializing GLEW: " << glewGetErrorString(err) << std::endl;
00061     Cg_ProgramBase::initializeCg();
00062     std::cout << "Done with initialization" << std::endl;
00063     }
00064
src/qvgpukltflow.cpp
