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• 特性
• Default features
• Security requirements
• 另请参阅
• 相关话题

草案
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WebXR 设备 API dictionary XRSessionInit specifies required and/or optional features when requesting a new XRSession 通过调用 navigator.xr.requestSession() 方法。

特性

The following parameters are all optional. If none are included, the device will use a default feature configuration for all options.

optionalFeatures 可选

An array of values identifying features which the returned XRSession may optionally support. At this time, all features are identified using strings from the XRReferenceSpaceType enumeration, but future updates to the WebXR standard may add more features.

requiredFeatures 可选

An array of values which the returned XRSession must support. These values currently must come from the enumerated type XRReferenceSpaceType . More features may be added in future updates to the WebXR standard.

Default features

Immersive sessions

All immersive (both immersive-vr and immersive-ar )  sessions support both the viewer and local reference spaces.

Because immersive sessions are required to support the local reference space, any request to open an immersive XRSession is required to obtain explicit or implicit user consent .

Inline sessions

所有 inline WebXR sessions support the viewer reference space.

Security requirements

Each reference space or feature type has minimum safety requirements. By session type, those are:

Reference space type	User consent rquirement	Feature policy requirement
bounded-floor	Always required	xr-spatial-tracking
local	Always required for inline sessions	xr-spatial-tracking
local-floor	Always required	xr-spatial-tracking
unbounded	Always required	xr-spatial-tracking
viewer	Always required	—

另请参阅

• Spatial tracking in WebXR
• XRSession

元数据

• 最后修改： May 19, 2020

相关话题

1. WebXR 设备 API
2. XRSessionInit
3. Related pages for WebXR Device API

   1. Navigator.xr
   2. WebGLRenderingContext.makeXRCompatible()
   3. XR
   4. XRBoundedReferenceSpace
   5. XRFrame
   6. XRInputSource
   7. XRInputSourceArray
   8. XRInputSourceEvent
   9. XRInputSourcesChangeEvent
   10. XRPose
   11. XRReferenceSpace
   12. XRReferenceSpaceEvent
   13. XRRenderState
   14. XRRigidTransform
   15. XRSession
   16. XRSessionEvent
   17. XRSpace
   18. XRView
   19. XRViewerPose
   20. XRViewport
   21. XRWebGLLayer