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Revision 9bc317b36964d670890ca0288d796f807bdf8d2c authored by Alon Zakai on 21 April 2015, 23:42:41 UTC, committed by Alon Zakai on 21 April 2015, 23:42:41 UTC 
1.31.3
1 parent 70c9532
Raw File
sdl_canvas_twice.c 
#include <SDL/SDL.h>

#ifdef __EMSCRIPTEN__
#include <emscripten.h>
#endif

int main(int argc, char **argv) {
  SDL_Init(SDL_INIT_VIDEO);
  SDL_Surface *screen = SDL_SetVideoMode(40, 40, 32, SDL_SWSURFACE);

  SDL_FillRect(screen, NULL, SDL_MapRGBA(screen->format, 0xff, 0, 0, 0xff));
  SDL_LockSurface(screen);
  *((int*)screen->pixels + 95) = 0;
  SDL_UnlockSurface(screen);

  SDL_FillRect(screen, NULL, SDL_MapRGBA(screen->format, 0, 0xff, 0, 0xff)); // wipe out previous pixel and fill
  SDL_LockSurface(screen);
  *((int*)screen->pixels + 205) = 0;
  SDL_UnlockSurface(screen);

  SDL_Flip(screen);

  return 0;
}
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