standalone/001_gl_limits.cpp

Shows the basic usage of OGLplus by printing some infoCopyright 2008-2014 Matus Chochlik. Distributed under the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)

#include <cassert>
#include <iostream>
#include <iomanip>

#include <GL/glew.h>
#include <GL/glut.h>

#include <oglplus/context.hpp>

#include <iostream>

int main(int argc, char* argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
    glutInitWindowSize(800, 600);
    glutInitWindowPosition(100,100);
    glutCreateWindow("OGLplus+GLUT+GLEW");

    if(glewInit() == GLEW_OK) try
    {
        glGetError();
        oglplus::Context context;
        //
        std::cout << "Limits:" << std::endl;
        //
        std::size_t w = 0;
        for(auto r=oglplus::EnumValueRange<oglplus::LimitQuery>(); !r.Empty(); r.Next())
        {
            std::size_t n = EnumValueName(r.Front()).size();
            if(w < n) w = n;
        }
        for(auto r=oglplus::EnumValueRange<oglplus::LimitQuery>(); !r.Empty(); r.Next())
        {
            auto ev = r.Front();
            std::cout << std::setw(w) << EnumValueName(ev).c_str() << ": ";
            try { std::cout << context.FloatLimit(ev); }
            catch(...){ std::cout << "N/A"; }
            std::cout << std::endl;
        }
        return 0;
    }
    catch(oglplus::Error& err)
    {
        std::cerr
            << "Error (in "
            << err.GLFunc()
            << "'): "
            << err.what()
            << " ["
            << err.SourceFile()
            << ":"
            << err.SourceLine()
            << "] "
            << std::endl;
    }
    return 1;
}