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Known issues - Hololight Stream SDK for Unity

When integrating the Hololight Stream SDK into Unity 3D, you may encounter the following limitations or known issues

  • Unity 6 is not officially supported.
    While Hololight Stream may run with Unity 6, it requires updates to example projects and dependencies.
  • Rendering differences between Unity 2021.3 (LTS) and Unity 2022.3 (LTS).
    These versions render visuals differently. This is a Unity issue and not related to Hololight Stream.
  • Spatial anchor export may fail.
    If this occurs, try exporting again. Retrying often resolves the issue.
  • Speech recognition doesn't support runtime keyword updates.
    Attempting to update keywords at runtime can crash the application. Register all keywords during startup until this limitation is resolved.
  • Late initialization of the Hololight Stream loader causes feature failures.
    If the loader initializes late, Hololight Stream Extensions may not receive data channels correctly. For example, touchscreen support might not function. We recommend enabling Initialize XR on Startup under XR Plug-in Management in Unity project settings.
  • Culling artifacts during application viewing.
    When using single-pass instanced rendering, visible culling of 3D objects may occur in the Unity Editor or application.
  • MX Ink Stylus example has limited support.
    It does not support hands or controllers.
  • Camera stream settings may not update reliably.
    If you change and apply settings rapidly in the camera stream example, they may not take effect.
  • Enabling DirectX 12 debugging will cause crashes.
    Activating debugging through the DirectX Control Panel with DirectX 12 enabled in the project causes Unity to crash.
  • Single-pass instanced rendering with DirectX 12 isn't supported in all Unity versions.
    In such cases, switch to multi-pass rendering for better compatibility, though it's less efficient.
  • Camera stream warning with DirectX 12.
    When using the camera stream feature with DirectX 12, Unity may display the warning:
    "d3d12: Creating a default shader resource view with dxgi-fmt=29 for a texture that uses..."
    This is a known Unity warning and doesn’t typically impact functionality.