Dod is receiving a localized broadcast from the airport 国防部收到从机场出来的本地视频信号
2.
Communicates to the direct3d texture manager the most detailed mipmap in the chain that should be loaded into local video memory ，可向direct3d纹理管理器通知应加载到本地视频内存的链中的最详细mipmap 。
3.
To 2 indicates that the texture manager should load only mipmap levels 2 through 4 into local video memory at any given time 设置为2 ，表示纹理管理器在任何给定时间应该只将2到4的mipmap级别加载到本地视频内存。
