for (int y = 0; y < heightmap->h; y++)
		for (int x = 0; x < heightmap->w; x++) {
			printf("%i: %i, %i: %i\n", frm, x,y, heightmap->format->BytesPerPixel);
			Uint32 *pixels = (Uint32 *)heightmap->pixels;
			Uint32 l =   pixels[ ( y * 257 ) + x ];

		}