VS2015运行OGRE的时候，运行到mRoot->initialise(false) 时出错，orge.log文件提示OGRE EXCEPTION(1:InvalidStateException): Cannot initialise - no render system has been selected. in Root::initialise at E:\OGRE-2.1\OgreMain\src\OgreRoot.cpp (line 655) 请问怎么解决？求教。

请问楼主下载的是哪一版的ogre配的vs2015