WINDOWS_UWP && UNITY_XR_WINDOWSMR not working?

Unity Engine
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1

In my Application I want to scan a QR Code and spawn a Panel on top of it but I have 2 problems with the process…

First of I use Unity 2021 with MRTK3 pre 12 and the QR tracking code is from here:
MixedReality-QRCode-Sample/SpatialGraphNode.cs at main · microsoft/MixedReality-QRCode-Sample · GitHub

Here is how I changed it:

if (node == null)
            {
                Debug.Log("InitializeSpatialGraphNode");
                node = (Id != System.Guid.Empty) ? SpatialGraphNode.FromStaticNodeId(Id) : null;
                if (node != null)
                {
                    Debug.Log("Initialize SpatialGraphNode Id= " + Id);
                    isNew = true;
                }
            }

            if (node != null)
            {
                if (node.TryLocate(out Pose pose))
                {
                    // If there is a parent to the camera that means we are using teleport and we should not apply the teleport
                    // to these objects so apply the inverse
                    if (Camera.main.transform.parent != null)
                    {
                        Debug.Log("Pose before transformedby QRPose = " + pose.position.ToString("F7") + " QRRot = " + pose.rotation.ToString("F7"));
                        pose = pose.GetTransformedBy(Camera.main.transform.parent);

                        // Rotate the panel so it faces the user
                        pose.rotation *= Quaternion.Euler(180, 0, 0);
                    }

                    if (isNew)
                    {
                        isNew = false;
                        gameObject.transform.SetPositionAndRotation(pose.position, pose.rotation);
                    }
                    Debug.Log("Id= " + Id + " QRPose = " + pose.position.ToString("F7") + " QRRot = " + pose.rotation.ToString("F7"));
                }
                else
                {
                    Debug.LogWarning("Cannot locate " + Id);
                }
            }

When I scan the QR Code my Panel with the SpacialGraphNode Script get spawned in (but always facing away from me? I don’t know why but that’s why the 180° rotation is in there) but it never gets a note so it can’t position my panel. Adding some Debug texts reveals that I always end in the #else path wich just returns null all the time.

If I change the #if WINDOWS_UWP && UNITY_XR_WINDOWSMR to just #if WINDOWS_UWP and switch to player I can see that the code should be reached but then I get an error saying that “WindowsMREnvironment” is not in “UnityEngine.XR.WindowsMR” maybe that is the problem?

I tried running the App through Holographic Remoting and also building it and starting the app on the HoloLens itself. Has anybody an idea what the problem could be?

Best regards

2

You might get more traction with this question on the Microsoft Mixed Reality forums: https://techcommunity.microsoft.com/t5/mixed-reality/ct-p/MicrosoftMixedReality