Errors when Porting Unity Project to UWP for Windows Mixed Reality

I am porting my unity title from the Windows platform for the Oculus and HTC Vive to Universal Windows Platform for Windows Mixed Reality.

I'm using Unity 2017.2.0p2

It appears there are some libraries that are not being included or that are not supported by UWP. My title will run in the editor without problems, but when I build the game I'm getting a number of errors mostly saying that 'x' does not contain a definition for 'y'.

Here are the errors I'm getting (There are a lot more errors than this, but they are mostly duplicates of these from when something is referenced more than once.)

Here is the full error log

https://drive.google.com/file/d/1ww6ez4O891nSh6HI0CC-Cv6Ex5M6aTBA/view?usp=sharing

 

Basically, when you target UWP, you're compiling with WinRT. Which is essentially a trimmed down version of .NET (meant to be "more secure", etc.).

This is actually the kind of thing .NET Standard 2.0 is meant to solve, since it brings back most of the missing APIs. UWP now supports .NET Standard 2.0. Unfortunately Unity isn't there yet. They've said that they expect to have .NET Standard 2.0 support in 2018.1.

Until then... if you need to support UWP right now, you have some research to do to find the equivalent API to use to replace the missing ones (DatagramSocket instead of UdpClient, etc.)

 

What I'm finding now is that I might be able to use IL2CPP to get a build to work. Do you know what needs to be done to set up the project for IL2CPP?

A link to the information I found on it.
https://forum.unity.com/threads/build-application-with-mono-c-compiler.430829/

 

Using 2017.2.0p2-MRTP and these player settings I'm able to get unity to build the project. It also builds in Visual Studio, but then I just get a black screen and the whole system freezes up.




When it froze I got this message


Here is a link to the version of unity I'm using.
https://forum.unity.com/threads/cus...ndows-mixed-reality-technical-preview.498253/

 

I am able to run other MR apps without a problem. My Game also runs fine in the Unity editor, but when I run it from Visual Studio I just get black in the headset then things start to slow down before the system freezes.

 

I was getting a similar result in the Unity editor when I commented out the line causing this error

Could it be that it is building, but ignoring some things that aren’t supported like MethodImplOptions.Synchronized?

 

I think the system freezes as the game is crashing. I got the error message then it was frozen.

 

Can you confirm your PC is on Windows 10 RS3?

Are you able to connect a Windows Mixed Reality headset and the Mixed Reality Portal is working? I saw you also posted on the MRTP thread so it looks like you are on the correct build.

 

The Mixed Reality Portal runs without problems. I'm currently on windows build 16299.125 and I'm using unity 2017.2.0p2-MRTP.

 

I stopped it before the system froze this time and this is the debug output I got in Visual Studio

 

I also saw in one of the most recent posts on the MRTP thread that all the fixes have been added to 2017.2.1f1. Would I be better off switching to that build of unity?

 

I was able to get it to work with a simple scene from the same project. I think it might be a memory leak. I have seen it give me the message "out of memory" before Visual Studio has crashed and restarted. It has done that a few times instead of the whole system crashing.

 

Hi, was long time ago, but did you find a solution for the memory leak? I'm using DatagramSocket too and I go in "Out of memory" when reading from udp.