working on rendering

engine/filesystem_pak.cpp

@@ -83,6 +83,7 @@ public:
 		delete pHandle;
 	}
 	virtual CUtlBuffer<unsigned char> Read( IFileHandle *pFile ) override { return NULL; }; 
+	virtual const char *ReadString( IFileHandle *pFile ) override { return NULL; };
 };
 
 EXPOSE_FILESYSTEM(CPAKFileSystem, "pakfs");