Simple error check of open gl (write readable error description to cerr stream including file name and line number)

GLError.cpp

#include "GLError.h"
#include <iostream>
#include <string>

#ifdef WIN32
#  include <GL/glew.h>
#elif __APPLE__
#  include <OpenGL/gl3.h>
#else
#  include <GL3/gl3.h>
#endif

using namespace std;

void _check_gl_error(const char *file, int line) {
        GLenum err (glGetError());

        while(err!=GL_NO_ERROR) {
                string error;

                switch(err) {
                        case GL_INVALID_OPERATION:      error="INVALID_OPERATION";      break;
                        case GL_INVALID_ENUM:           error="INVALID_ENUM";           break;
                        case GL_INVALID_VALUE:          error="INVALID_VALUE";          break;
                        case GL_OUT_OF_MEMORY:          error="OUT_OF_MEMORY";          break;
                        case GL_INVALID_FRAMEBUFFER_OPERATION:  error="INVALID_FRAMEBUFFER_OPERATION";  break;
                }

                cerr << "GL_" << error.c_str() <<" - "<<file<<":"<<line<<endl;
                err=glGetError();
        }
}

GLError.h

#ifndef GLERROR_H
#define GLERROR_H

void _check_gl_error(const char *file, int line);

///
/// Usage
/// [... some opengl calls]
/// check_gl_error();
///
#define check_gl_error() _check_gl_error(__FILE__,__LINE__)

#endif // GLERROR_H