After experimenting with a long running average at maxed out FPS and a variety of map sizes, 128 seems to actually be a good size to use if only drawing bits of world with stuff in it. 64 actually did even better in some situations, but significantly worse in others (lots of land, zoomed out).
/**
Copyright (C) 2005-2011 Sergey A. Tachenov
This program is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
See COPYING file for the full LGPL text.
Original ZIP package is copyrighted by Gilles Vollant, see
quazip/(un)zip.h files for details, basically it's zlib license.
*/
#ifndef QUAZIP_GLOBAL_H
#define QUAZIP_GLOBAL_H
#include <QtCore/qglobal.h>
/**
* When building the library with MSVC, QUAZIP_BUILD must be defined.
* qglobal.h takes care of defining Q_DECL_* correctly for msvc/gcc.
*/
#define QUAZIP_EXPORT
#ifdef __GNUC__
#define UNUSED __attribute__((__unused__))
#else
#define UNUSED
#endif
#endif // QUAZIP_GLOBAL_H