I would like to export messages out from unity3d to DDS, and deploy the application for hololens2. Does RTI Connext support this feature right now?
If not, would it work if I export the messages out to ROS first and using RTI connext to publish messages from ROS to DDS?
I believe that you're trying to run DDS on the Hololens platform? I think that Hololens runs a version of Windows 10 on an ARM CPU. Unfortunately, that platform is not currently supported by RTI Connext.