void sdlemu_draw_texture(SDL_Surface * dst, SDL_Surface * src, int texturetype);
void sdlemu_close_opengl(void);
void sdlemu_create_texture(SDL_Surface * src, SDL_Surface * dst, int filter, int src_bpp);
void sdlemu_draw_texture(SDL_Surface * dst, SDL_Surface * src, int texturetype);
void sdlemu_close_opengl(void);
void sdlemu_create_texture(SDL_Surface * src, SDL_Surface * dst, int filter, int src_bpp);