NGLInit.cpp

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/*
  Copyright (C) 2009 Jon Macey

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
#include "NGLInit.h"
#include "ShaderLib.h"
#include "VAOPrimitives.h"
#include "VAOFactory.h"
#include "SimpleVAO.h"
#include "MultiBufferVAO.h"
#include "SimpleIndexVAO.h"

#if defined(LINUX) || defined(WIN32)
  #include <cstdlib>
#endif
//----------------------------------------------------------------------------------------------------------------------
//----------------------------------------------------------------------------------------------------------------------


namespace ngl
{
//----------------------------------------------------------------------------------------------------------------------


NGLInit::NGLInit()
{
#ifndef USINGIOS_
  // set this first so that new driver features are included.
  glewExperimental = true;
  // now init glew
  GLenum err = glewInit();
  // error check
  if (GLEW_OK != err)
  {
    std::cerr<<"Error: "<<glewGetErrorString(err)<<"\n";
  }
  // now see if NGL can run in this environment
  std::cout<<"Using GLEW "<<glewGetString(GLEW_VERSION)<<"\n";
  if(!glewIsSupported("GL_VERSION_3_2") )
  {
    std::cerr<<"To run these demos you need a modern OpenGL Version\n";
    std::cerr<<"The lowest level OpenGL we support is 3.2\n";
    std::cerr<<"It could be you don't have the correct drivers installed\n";
    std::cerr<<"Or if linux on a laptop it could be using the intel driver and not the GPU\n";
    std::cerr<<"for more info contact Jon\n";

  }
  int majorVersion,minorVersion;
  glGetIntegerv(GL_MAJOR_VERSION, &majorVersion);
  glGetIntegerv(GL_MINOR_VERSION, &minorVersion);
  #ifdef NGL_DEBUG
    std::cerr <<"ngl:: configured with GL version "<<majorVersion<<"."<<minorVersion<<"\n";
  #endif
  VAOFactory::registerVAOCreator("simpleVAO",SimpleVAO::create);
  VAOFactory::registerVAOCreator("multiBufferVAO",MultiBufferVAO::create);
  VAOFactory::registerVAOCreator("simpleIndexVAO",SimpleIndexVAO::create);
#endif
}

//----------------------------------------------------------------------------------------------------------------------
NGLInit::~NGLInit()
{
}


} // end of ngl namespace