boost::shared_ptr<SDL_Surface> CGViewer::loadImage(const std::string& filename)
{
boost::shared_ptr<SDL_Surface> loadedImage(
IMG_Load(filename.c_str()),
boost::bind(&SafeFreeSurface, _1));
if (!loadedImage.get())
throw std::runtime_error(IMG_GetError());
//dostosowanie grafiki do wyswietlenia z kanalem przezroczystosci
boost::shared_ptr<SDL_Surface> optimizedImage(
SDL_DisplayFormatAlpha(loadedImage.get()),
boost::bind(&SafeFreeSurface, _1) );
return optimizedImage;
}
shared_ptr<SDL_Surface> SDL::generate(const string & filename, bool alpha) {
shared_ptr<SDL_Surface> image(IMG_Load(filename.c_str()), &freeSurface);
if (image == NULL)
throw SDLException(IMG_GetError(), HERE);
shared_ptr<SDL_Surface> optimizedImage(optimize(image, alpha));
if (optimizedImage == NULL)
throw SDLException(IMG_GetError(), HERE);
Uint32 flags = SDL_RLEACCEL;
if (alpha)
flags |= SDL_SRCALPHA;
SDL_SetAlpha(optimizedImage.get(), flags, SDL_ALPHA_OPAQUE); // doubles the fps :o
LOG4CXX_DEBUG(m_logger, "Image at " << filename << " loaded successfully. Alpha blending is " << (alpha ? "enabled." : "disabled."));
return optimizedImage;
}
