text: #include <stdio.h>
  #include <SDL.h>
  #include <SDL_ttf.h>
  #include <emscripten.h>
  
  SDL_Window *window;
  SDL_Renderer *renderer;
  TTF_Font *font;
  
  void frame()
  {
      static SDL_Color colorA = { 0xff, 0x99, 0x00, 0xff };
      static SDL_Color colorB = { 0x11, 0xff, 0xff, 0xff };
      static SDL_Rect upperRect = {0, 0, 640, 240};
      static SDL_Rect lowerRect = {0, 240, 640, 240};
  
      SDL_Surface *helloSurface = TTF_RenderText_Shaded(font, "hello", colorA, colorB);
      SDL_Surface *worldSurface = TTF_RenderText_Shaded(font, "world", colorB, colorA);
      SDL_Texture *helloTexture = SDL_CreateTextureFromSurface(renderer, helloSurface);
      SDL_Texture *worldTexture = SDL_CreateTextureFromSurface(renderer, worldSurface);
  
      SDL_SetRenderDrawColor(renderer, 0xcc, 0xcc, 0xcc, 0xff);
      SDL_RenderClear(renderer);
      SDL_RenderCopy(renderer, helloTexture, NULL, &upperRect);
      SDL_RenderCopy(renderer, worldTexture, NULL, &lowerRect);
      SDL_RenderPresent(renderer);
  
      SDL_FreeSurface(helloSurface);
      SDL_FreeSurface(worldSurface);
      SDL_DestroyTexture(helloTexture);
      SDL_DestroyTexture(worldTexture);
  }
  
  int main()
  {
      SDL_Init(SDL_INIT_VIDEO);
      TTF_Init();
      SDL_CreateWindowAndRenderer(640, 480, 0, &window, &renderer);
      font = TTF_OpenFont("LiberationSansBold.ttf", 40);
      emscripten_set_main_loop(frame, -1, 1);
  }
  