WebXR: Make Depth sensing occlusion tunable

[michaelthatsit]

Description

We have use cases in mrjs that require we dynamically un-occlude parts of the environment.

Currently, without depth-sensing, we create plane meshes for the walls and disable colorWrite and set their rendering order to a value ahead of all other objects, then set visible to false when we want to see beyond them. see the screenshot below for an example

We'd like to be able to benefit from the better body occlusion provided by depth-sensing, without inhibiting our ability to achieve the above.

Solution

An API to tune depth-sensing occlusion by distance. something like

renderer.xr.depthSensing.near = 0.1
renderer.xr.depthSensing.far = 1

Alternatives

provide depth-sensing data without enabling occlusion by default.

Additional context

No response