23 lines
1.6 KiB
Markdown
23 lines
1.6 KiB
Markdown
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---
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uid: arsubsystems-upgrade-guide
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---
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# Upgrading to AR Subsystems version 4.2
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To upgrade to AR Subsystems package version 4.2, you need to do the following:
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- Use new methods to query for occlusion subsystem support.
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- Use Unity 2020.3 or newer.
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**Use new methods to query for occlusion subsystem support**
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The [XROcclusionSubsystemDescriptor](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystemDescriptor) provides a means to query for the capabilities of an [XROcclusionSubsystem](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystem). Previously, these capabilities were booleans, but some platforms may take a few frames to determine a capability. Those `bool` properties have been deprecated in favor of properties that return a [Supported](xref:UnityEngine.XR.ARSubsystems.Supported) state, which includes a `Supported.Unknown` state to indicate support for the feature or capability is not yet known. These properties are:
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- [humanSegmentationStencilImageSupported](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystemDescriptor.humanSegmentationStencilImageSupported)
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- [humanSegmentationDepthImageSupported](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystemDescriptor.humanSegmentationDepthImageSupported)
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- [environmentDepthImageSupported](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystemDescriptor.environmentDepthImageSupported)
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- [environmentDepthConfidenceImageSupported](xref:UnityEngine.XR.ARSubsystems.XROcclusionSubsystemDescriptor.environmentDepthConfidenceImageSupported)
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**Use Unity 2020.3 or newer**
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This version of the package requires Unity 2020.3 or newer.
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