In the context of a "paper" or research, this filename is most frequently associated with:
: Archives like "beginning diretx 9.rar" are hosted on technical download sites such as EEWorld as introductory guides or "papers" for learning DirectX 9 development. DX9.rar
: The file "Real Time 3D Terrain Engines Using C++ And Dx9.rar" is a common resource often cited in game development blogs and resource lists like BiG5 on cnblogs . It typically contains the source code or companion materials for the book Real-Time 3D Terrain Engines Using C++ and DirectX 9 by Greg Snook. In the context of a "paper" or research,
历年GDC, Gamefest,Siggraph等大型会议的paper也是应该关注的。至于那些“All ... Real Time 3D Terrain Engines Using C++ And Dx9.rar ，实时3D地形引擎用C++和Dx9 www.cnblogs.com DX9.rar
: Because DirectX 9 was the standard for many years, many academic papers from conferences like GDC or SIGGRAPH during the mid-2000s used this naming convention for accompanying code samples or shader demonstrations. 游戏编程资源（zz） - BiG5 - 博客园