Support Unity (.NET 3.5)

[maxenceboucas]

I've tried to install the Wrapper to get HoloLens Api vidéo stream into a Unity Project but I'can succeed to install it.

Can you help me ?

First try NuGet:

• Install package
• ERROR: .NetFramework v3.5 (too old)
• Impossible to change into VS cause it's a unity project
• Changing into Unity Framework target to 4.6 (in Edit>Project Settings>Player>Other Settings>Configuration)
• Changing Nothing

Second Try DLL:

• Compile into VS the dll
• Add dll to assets
• Impossible to add the reference to this ddl into VS
• ERROR 1 : into DLL file on Unity " Plugin targets .NET 4.x ... incompatible with Editor
• ERROR 2 :
  UnityException: Failed to run reference rewriter with command --target="Temp\StagingArea\WindowsDevicePortalWrapper.dll" --additionalreferences="Temp\StagingArea","Temp\StagingArea\Plugins\ARM" ...

Can you show me the way to add this library to my project ?

Thanks a lot

[hpsin]

This is something that @davidkline-ms would like as well, as Unity interplay with WDPW would be very nice for HoloLens development. At this time I don't think there's a way to do this - it would require Unity to support .NET 4.5 or for us to shift the library to use .NET 3.5 which would break many of the new features we're using.

Leaving this open as it is a good thing to have. I'd suggest talking to Unity and asking them to support .NET 4.5.

[david-c-kline]

As @hpsin mentions, adding support for .net 3.5 is not trivial as we are utilizing patterns that are not supported against that target.

I agree we should keep this open.

[Holo-Krzysztof]

Unity 2017.1 has an experimental .NET 4.6 compatible runtime, so it should theoretically work now. It won't be default for the time being, but it's a start after all.