SDL Init

#ifndef INIT_SDL_H
#define INIT_SDL_H

/* Include windows.h properly on Windows */
#if defined(WIN32) || defined(_WINDOWS)
#  define WIN32_LEAN_AND_MEAN
#  define NOMINMAX
#  include <windows.h>
#endif

/* SDL */
#include <SDL.h>
#include <SDL_opengl.h>
#ifndef INIT_SDL_MAIN
#  undef main
#endif

#endif



#define INIT_SDL_MAIN
#include "init_sdl.h"

static const int window_width = 800;
static const int window_height = 600;

int main(int argc, char** argv)
{
    SDL_Window* win;
    SDL_GLContext ctx;

    int result = SDL_Init(SDL_INIT_VIDEO);
    if (result < 0)
        return 1;

    SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
    SDL_GL_SetAttribute(SDL_GL_DEPTH_SIZE, 24);
    SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 8);
    SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 8);
    SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 8);
    SDL_GL_SetAttribute(SDL_GL_ALPHA_SIZE, 8);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 3);

    win = SDL_CreateWindow("Hello SDL",
                           SDL_WINDOWPOS_CENTERED,
                           SDL_WINDOWPOS_CENTERED,
                           window_width, window_height,
                           SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN);
    if (!win)
        return 2;

    ctx = SDL_GL_CreateContext(win);
    SDL_GL_SetSwapInterval(1);

    SDL_Delay(1000);

    SDL_GL_DeleteContext(ctx);
    SDL_DestroyWindow(win);
    SDL_Quit();

    return 0;
}