Bullet是一个开源的物理模拟计算引擎，广Bullet也是AMD开放物理计划成员之一。
bullet中文文档，PDF格式，有需要的朋友可以下载。
Bullet is an open source physics simulation engine, wide plan Bullet is also a member of the AMD Open physics. bullet Chinese documents, PDF format, a friend in need can be downloaded. (2011-10-08, C/C++, 312KB, 下载12次)
中文版讲解DirectX9方方面面，适用于DirectX初学者。
Chinese version of DirectX9 to explain all aspects of DirectX for beginners. (2011-10-08, C/C++, 1404KB, 下载39次)