main.cpp

#include <stdexcept>
#include <iostream>
#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include "Context.hpp"

int main()
{
    if (::glfwInit() != GL_TRUE)
    {
        throw std::runtime_error("GLFW failed to initialize");
    }

    ::glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
    ::glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
    ::glfwWindowHint(GLFW_OPENGL_CORE_PROFILE, GLFW_OPENGL_CORE_PROFILE);

    auto window = glfwCreateWindow(640, 480, "Hello OpenGL", nullptr, nullptr);
    if (!window)
    {
        throw std::runtime_error("GFLW failed to create a window");
    }

    ::glfwMakeContextCurrent(window);

    const auto glewResult = glewInit();
    if (glewResult != GLEW_OK)
    {
        throw std::runtime_error("Couldn't initialize glew");
    }

    Context c(1000); // 1k triangles please
    c.init();

    double frames = 0.0;
    double elapsed_time = 0.0;
    double frame_time_point;

    while (!::glfwWindowShouldClose(window))
    {
        frame_time_point = ::glfwGetTime();

        c.draw();

        ::glfwSwapBuffers(window);
        ::glfwPollEvents();
        elapsed_time += ::glfwGetTime() - frame_time_point;
        ++frames;
    }

    const auto secondsPerFrame = elapsed_time / frames;
    const auto framesPerSecond = 1 / secondsPerFrame;

    ::glfwDestroyWindow(window);

    std::cout << framesPerSecond << std::endl;
    std::cin.get();

    return 0;
}