SDL_Surface *Desaturate(SDL_Surface *orig){	// The Desaturated Image memory location	SDL_Surface *newScr;	// Create a new Surface	newScr = SDL_CreateRGBSurface(SDL_HWSURFACE, orig->w, orig->h, 32, rmask, gmask, bmask, amask);	SDL_BlitSurface(orig, NULL, newScr, NULL);	// Desaturate the new Image	for (int x = 0; x < newScr->w; ++x)	{		for (int y = 0; y < newScr->h; ++y)		{			// Locks the Surface for pixel Manipulation			if (SDL_LockSurface(newScr) < 0)			{				// ERROR				return NULL;			}			// Read the pixel information for the current image			Uint32 color = GetPixel(newScr, x, y);			// Takes the Blue Channel			float b = color & 0xFF;			color = color >> 8;			// Takes the green Channel			float g = color & 0xFF;			color = color >> 8;			// Takes the Red Channel			float r = color & 0xFF;						// Take the average of the three channels			int brightness = (r + g + b) / 3;			// Desaturation of the current pixel and write it to image			color = brightness | (brightness << 8) | (brightness << 16);			// This adds the Alhpa Channel Because Its the way PNG files are stored			color += 4278190080;			// Write the Color Information to the Surface			PutPixel(newScr, x, y, color);			SDL_UnlockSurface(newScr);		}	}   	// Update the newly created Surface	SDL_UpdateRect(newScr, 0, 0, newScr->w, newScr->h);	// Delete the original Surface	SDL_FreeSurface(orig);	return newScr;}