Simple SDL2 program that uses OpenGL

gistfile1.txt

// Compile with:
// clang++ main.cpp  -lSDL2 -lGL

#include <cstdlib>
#include <stdio.h>
#include <stdint.h>
#include <assert.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_opengl.h>
#include <GL/gl.h>

typedef int32_t i32;
typedef uint32_t u32;
typedef int32_t b32;

#define WinWidth 640
#define WinHeight 480

void fatal(const char* msg) {
  printf("%s\n", msg);
  exit(EXIT_FAILURE);
}

int main (int ArgCount, char **Args)
{


  if (SDL_Init(SDL_INIT_VIDEO) < 0) {
    fatal("SDL_Init");
  };
  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 2);
  SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
  SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);


  u32 WindowFlags = SDL_WINDOW_OPENGL | SDL_WINDOW_SHOWN | SDL_WINDOW_FULLSCREEN;
  SDL_Window *Window = SDL_CreateWindow("OpenGL Test", 0, 0, WinWidth, WinHeight, WindowFlags);
  assert(Window);
  if (!Window) {
    fatal("Window");
  }
  SDL_GLContext Context = SDL_GL_CreateContext(Window);
  if (!Context) {
    fatal("Context");
  }

  b32 Running = 1;
  b32 FullScreen = 0;
  while (Running)
  {
    SDL_Event Event;
    while (SDL_PollEvent(&Event))
    {
      printf("PollEvent\n");
      if (Event.type == SDL_KEYDOWN)
      {
        switch (Event.key.keysym.sym)
        {
          case SDLK_ESCAPE:
            Running = 0;
            break;
          default:
            break;
        }
      }
      else if (Event.type == SDL_QUIT)
      {
        Running = 0;
      }
    }

    glViewport(0, 0, WinWidth, WinHeight);
    glClearColor(1.f, 0.f, 1.f, 0.f);
    glClear(GL_COLOR_BUFFER_BIT);

    SDL_GL_SwapWindow(Window);
  }
  return 0;
}