// To compile on Windows

// Install GLFW 3.3.8
// https://www.glfw.org/download.html
// On Windows:
// extract the downloaded .zip file to "C:/libs"; this is currently expected
// by our CMakeLists.txt.

// Install CMake
// https://cmake.org/download
// Add to PATH for all users
// from project root:
// mkdir build
// cd build
// cmake ..
// cmake --build .
// The last step compiles the executable - this can also be done from Visual
// Studio

// To run in VS
// Set startup project in Solution Explorer
// Press F5 to run
//
// To compile on Arch Linux
//
// Install dependencies
// sudo pacman -S glfw mesa glew
//
// Build
// cmake ..
// cmake --build .

#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <GL/gl.h>

#include <iostream>

int main()
{
    if (!glfwInit())
        return -1;

    GLFWwindow* window = glfwCreateWindow(640, 480, "Hello GL", NULL, NULL);
    if (!window)
    {
        glfwTerminate();
        return -1;
    }

    glfwMakeContextCurrent(window);

    glewExperimental = GL_TRUE;
    if (glewInit() != GLEW_OK)
    {
        std::cerr << "Failed to initialize GLEW" << std::endl;
        return -1;
    }

    while (!glfwWindowShouldClose(window))
    {
        glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
        glClear(GL_COLOR_BUFFER_BIT);

        glfwSwapBuffers(window);

        glfwPollEvents();
    }

    glfwTerminate();
    return 0;
}