#include<stdio.h>
#include<glad/glad.h>
#define SDL_MAIN_HANDLED
#include<SDL.h>
#include"mino.h"
#include"graph.h"

_ SDL_Window*win;
_ SDL_GLContext ctx;
_ U32 win_w=1280;
_ U32 win_h=720;
_ V on_err(IM C*d){die("Could not %s: %s\n",d,SDL_GetError());}

V graph_init(V){SDL_version sdl_vh,sdl_vl;
  Q(SDL_Init(SDL_INIT_VIDEO),on_err("init sdl2"))
  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION,3),
  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION,3),
  SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,SDL_GL_CONTEXT_PROFILE_CORE);
  N(win=SDL_CreateWindow("mino",SDL_WINDOWPOS_CENTERED,SDL_WINDOWPOS_CENTERED,win_w,win_h,SDL_WINDOW_RESIZABLE|SDL_WINDOW_OPENGL),on_err("create window"))
  N(ctx=SDL_GL_CreateContext(win),on_err("create OpenGL context"))
  N(gladLoadGLLoader((GLADloadproc)SDL_GL_GetProcAddress),on_err("load GL"))
  SDL_GL_SetSwapInterval(-1);

  SDL_VERSION(&sdl_vh)SDL_GetVersion(&sdl_vl);
  fprintf(stderr,
    "Graphics initialization successful!\n"
    "\tSDL Version:     %d.%d.%d (built against)\n"
    "\tSDL Version:     %d.%d.%d (linked against)\n"
    "\tOpenGL Version:  %s\n"
    "\tOpenGL Vendor:   %s\n"
    "\tOpenGL Renderer: %s\n",
    sdl_vh.major,sdl_vh.minor,sdl_vh.patch,
    sdl_vl.major,sdl_vl.minor,sdl_vl.patch,
    glGetString(GL_VERSION),glGetString(GL_VENDOR),glGetString(GL_RENDERER));}

V graph_deinit(V){SDL_GL_DeleteContext(ctx),SDL_DestroyWindow(win),SDL_Quit();}