/**********************************************************************
 *                                                                    *
 * cgt - CAMP Graphics Toolbox, Copyright (C) 2012-2015               *
 *     Chair for Computer Aided Medical Procedures                    *
 *     Technische Universitaet Muenchen, Germany.                     *
 *     <http://campar.in.tum.de/>                                     *
 *                                                                    *
 * forked from tgt - Tiny Graphics Toolbox, Copyright (C) 2006-2011   *
 *     Visualization and Computer Graphics Group, Department of       *
 *     Computer Science, University of Muenster, Germany.             *
 *     <http://viscg.uni-muenster.de>                                 *
 *                                                                    *
 * This file is part of the cgt library. This library is free         *
 * software; you can redistribute it and/or modify it under the terms *
 * of the GNU Lesser General Public License version 2.1 as published  *
 * by the Free Software Foundation.                                   *
 *                                                                    *
 * This library 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 Lesser General Public License for more details.                *
 *                                                                    *
 * You should have received a copy of the GNU Lesser General Public   *
 * License in the file "LICENSE.txt" along with this library.         *
 * If not, see <http://www.gnu.org/licenses/>.                        *
 *                                                                    *
 **********************************************************************/

#ifndef CGT_GL_H
#define CGT_GL_H

#ifdef __APPLE__
    #include <GL/glew.h>
    #include <OpenGL/gl.h>
    #include <OpenGL/glu.h>
#else
    #include <GL/glew.h>
    #include <GL/gl.h>
    #include <GL/glu.h>
#endif // __APPLE__

#include "cgt/gpucapabilities.h"
#include "cgt/types.h"

namespace cgt {
    CGT_API GLenum _lGLError(int line, const char* file);

    CGT_API GLboolean getGlBool(GLenum param);

    CGT_API GLint getGlInt(GLenum param);

    CGT_API GLfloat getGlFloat(GLenum param);

    /**
     *	Maps an GLenum returned by glGetError() to a humanly readable string.
     *	Essentially, this is a replacement for gluErrorString()
     *	\param  err     see https://www.opengl.org/sdk/docs/man/docbook4/xhtml/glGetError.xml
     */
    CGT_API const char* getErrorString(GLenum err);
} // namespace cgt

#ifdef CGT_DEBUG
    #define LGL_ERROR cgt::_lGLError(__LINE__, __FILE__)
#else
    #define LGL_ERROR
#endif

#endif  //CGT_GL_H