The namespace 'Foveation' does not exist in the namespace 'Wave.OpenXR'

[bio998]

I'm trying to implement foveated rendering in my game, but I'm getting the error in the title when using
 

using Wave.OpenXR.Foveation;

I'm following the documentation here https://developer.vive.com/resources/openxr/openxr-mobile/tutorials/unity/using-foveation-in-your-app/

 

I'm using:

Unity 2020.3.38f1

VIVE OpenXR Plugin - Android 1.0.4

OpenXR Plugin 1.4.2

In "XR plugin management", I've enabled "OpenXR" with "VIVE Focus 3 Support feature group", and in the OpenXR VIVE Focus 3 Support features, I've enabled 'VIVE Focus 3 Support' and 'VIVE Focus 3 Foveation'

I'm not sure what is wrong, but my project did used to have the Wave plugin, which I removed, and I started from scratch using the VIVE OpenXR Plugin.

The full error:

"Assets\Scripts\PlatformManager\PlatformManagerBen.cs(17,19): error CS0234: The type or namespace name 'Foveation' does not exist in the namespace 'Wave.OpenXR' (are you missing an assembly reference?)"

Anyone had the same issue? Can you help? Do I also need the VIVE Wave XR Plugin? I thought not as that is a separate backend.. but elsewhere in the documentation it refers to the VIVE OpenXR Plugin as 'VIVE Wave OpenXR Plugin & Toolkit' which is a bit confusing.

Edited February 12, 2023 by bio998

[bio998]

Update:

I removed the error by just using:

using Wave.OpenXR;

instead of 

using Wave.OpenXR.Foveation;

HOWEVER: It doesn't seem to matter what setting I use, I can't detect any foveated rendering actually happening in the build.

I have checked that the code is running using a log statement.

Anyone know how to get it working?

My current full script implementation:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
//using Wave.OpenXR.Foveation;
#if VIVE
using Wave.OpenXR;
#endif
public class ViveXR_Functions : MonoBehaviour
{
#if VIVE

    //from documentation https://developer.vive.com/resources/openxr/openxr-mobile/tutorials/unity/using-foveation-in-your-app/

    [SerializeField] XrFoveationModeHTC UsingMode;

    void Start()
    {
        XrFoveationConfigurationHTC[] Configs = new XrFoveationConfigurationHTC[2];
        /////////////////////Setting for left eye/////////////////////////////
        Configs[0].level = XrFoveationLevelHTC.XR_FOVEATION_LEVEL_HIGH_HTC; //
        Configs[0].clearFovDegree = 0;                                      //
        Configs[0].focalCenterOffset.x = 0.0f;                              // 
        Configs[0].focalCenterOffset.y = 0.0f;                              //
                                                                            //////////////////////////////////////////////////////////////////////

        ////////////////////Setting for right eye/////////////////////////////
        Configs[1].level = XrFoveationLevelHTC.XR_FOVEATION_LEVEL_HIGH_HTC; //
        Configs[1].clearFovDegree = 0;                                      //
        Configs[1].focalCenterOffset.x = 0.0f;                              //
        Configs[1].focalCenterOffset.y = 0.0f;                              //
                                                                            //////////////////////////////////////////////////////////////////////

        switch (UsingMode)
        {
            //XR_FOVEATION_MODE_FIXED_HTC: The position of foveation is fixed
            case XrFoveationModeHTC.XR_FOVEATION_MODE_FIXED_HTC:
                ViveFoveation.ApplyFoveationHTC(XrFoveationModeHTC.XR_FOVEATION_MODE_FIXED_HTC, 0, null);
                break;
            //XR_FOVEATION_MODE_DYNAMIC_HTC: the position of foveation can be addjust
            case XrFoveationModeHTC.XR_FOVEATION_MODE_DYNAMIC_HTC:
                ViveFoveation.ApplyFoveationHTC(XrFoveationModeHTC.XR_FOVEATION_MODE_DYNAMIC_HTC, 0, null);
                break;
            //XR_FOVEATION_MODE_CUSTOM_HTC: the foveation will use the custom setting
            case XrFoveationModeHTC.XR_FOVEATION_MODE_CUSTOM_HTC:
                ViveFoveation.ApplyFoveationHTC(UsingMode, 2, Configs);
                break;
            case XrFoveationModeHTC.XR_FOVEATION_MODE_MAX_ENUM_HTC:
                ViveFoveation.ApplyFoveationHTC(XrFoveationModeHTC.XR_FOVEATION_MODE_MAX_ENUM_HTC, 0, null);
                break;
            default:
                Debug.Log("VIVE foveation NOT set");

                break;
        }

    }


#endif


}

 

[bio998]

I think I have found the more specific issue. I'm getting the error:

Quote

DllNotFoundException: waveopenxr
Wave.OpenXR.ViveFoveation.ApplyFoveationHTC (Wave.OpenXR.XrFoveationModeHTC mode, System.UInt32 configCount, Wave.OpenXR.XrFoveationConfigurationHTC[] configs, System.UInt64 flags) (at Library/PackageCache/com.htc.upm.wave.openxr@1.0.4/Runtime/Features/Foveation/Scripts/ViveFoveation.cs:69)
ViveFunctions.Start () (at Assets/ViveFunctions.cs:42)

When using the code above.

How can I solve this Dll not found exception?

 

[bio998]

Ok, I've found the solution (I think).

I placed 

XrFoveationConfigurationHTC[] Configs = new XrFoveationConfigurationHTC[2];

outside of the Start() function. After that it just started working... but I'm not sure exactly if this was what did it.

I would say though that the documentation should be updated from this:

using Wave.OpenXR.Foveation;

to this:

using Wave.OpenXR;

 

[Shirly.H]

Hi @bio998

Sorry for late reply and thank you for your feedback.

The document have been corrected. Please see https://developer.vive.com/resources/openxr/openxr-mobile/tutorials/unity/using-foveation-in-your-app/.

[SmallStudio]

@Shirly Hsiao Despite following the document I still don't have foveation active in my Android app (I checked visually and also with the performance HUD). Is there something specific I should be looking for? Also, since we switched to OpenXR we don't have access to adaptative quality, is this normal? it doesn't popup in the API reference documentation too.

 

Thanks!

[SmallStudio]

Furthermore, when I play in the editor I get the following error :

DllNotFoundException: waveopenxr assembly:<unknown assembly> type:<unknown type> member:(null)
Wave.OpenXR.ViveFoveation.ApplyFoveationHTC (Wave.OpenXR.XrFoveationModeHTC mode, System.UInt32 configCount, Wave.OpenXR.XrFoveationConfigurationHTC[] configs, System.UInt64 flags) (at Library/PackageCache/com.htc.upm.wave.openxr@1.0.5/Runtime/Features/Foveation/Scripts/ViveFoveation.cs:71)
SetFoveation.Start () (at Assets/02_Scripts/SetFoveation.cs:28)

DllNotFoundException: waveopenxr assembly:<unknown assembly> type:<unknown type> member:(null)
Wave.OpenXR.ViveFoveation.ApplyFoveationHTC (Wave.OpenXR.XrFoveationModeHTC mode, System.UInt32 configCount, Wave.OpenXR.XrFoveationConfigurationHTC[] configs, System.UInt64 flags) (at Library/PackageCache/com.htc.upm.wave.openxr@1.0.5/Runtime/Features/Foveation/Scripts/ViveFoveation.cs:71)
SetFoveation.Start () (at Assets/02_Scripts/SetFoveation.cs:28)

I guess it is because there's just the Android so and no corresponding Windows dll?