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Meta XR Core SDK (UPM)

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Updated: Jun 5, 2025|
Version
77.0
Meta XR Core SDK provides the latest features to create immersive experiences for Meta XR devices.

Version 77.0 Release Notes

The Meta XR Core SDK package contains core assets and features to help you create immersive experiences for Meta XR devices. This package is equivalent to the VR folder within the pre-existing Oculus Integrations package.

See the Unity Getting Started Guide for information about how to get started developing for Meta Horizon with Unity, or the Scripting Reference for a detailed API reference.

What's New

  • [Building Blocks] New option for the Multiplayer “Colocation” block to allow players sharing host’s space with Space Sharing API.
  • Introduced Stationary tracking origin type as an experimental feature. The use of Stationary tracking origin is recommended over Stage tracking origin for any Mixed Reality application regardless of whether the application requires a boundary or not (i.e., boundaryless).

    • What's Fixed

  • [Immersive Debugger] Fixed ExecutionEngineException for some cases.

    • Improvements

  • [Immersive Debugger] Removed the requirements for Development Build to use the tool in the headset, and provided the option in settings instead.

    • Known Issues

  • Wrong serialization in some of the Unity Project Setup Tool Rules. We identified some rules that weren't marking the files as modified after applying their fixes. This can cause the applied changes to be lost. There is a fix coming in v78 but in the meantime if you reproduce the error you can manually modify your scene and project settings to mark them as needing serialization to record the fixes.
  • When using Avatar SDK with Core SDK, you might see “The type or namespace name 'OvrAvatarAnimationBehavior' could not be found” error from AvatarEntity.cs script if you haven’t imported the “Sample Scenes” asset from the Avatar SDK. This will be fixed in the next release. To work around this issue, import the “Meta Avatar SDK > Samples > Sample Scenes” from the Package Manager in Unity Editor.
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