emscripten/tests/sdl_canvas_twice.c

27 строки
580 B
C

#include <SDL/SDL.h>
#if 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, 0xff0000ff);
SDL_LockSurface(screen);
*((int*)screen->pixels + 95) = 0;
SDL_UnlockSurface(screen);
SDL_FillRect(screen, NULL, 0x00ff00ff); // wipe out previous pixel and fill
SDL_LockSurface(screen);
*((int*)screen->pixels + 205) = 0;
SDL_UnlockSurface(screen);
SDL_Flip(screen);
while(1) { SDL_WaitEvent(NULL); }
return 0;
}