fix: portal material visible default to false

[justabayet]

Why

Issue: performance issue with many MeshPortalMaterial. MeshPortalMaterial visible variable is never set to false without specific interactions.

MeshPortalMaterial is using a variable visible which decides if the texture needs to be updated or not. This variable value is true by default and is updated using useIntersect.

When a scene uses many MeshPortalMaterial they are all getting updated on each frame, until the camera moves around to look at the portals and then look away. This triggers the useIntersect hook which set visible to true when the portal is on sight, and then back to false when it's not on sight anymore.

What

Set visible to false by default.

Checklist

• Ready to be merged

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Name	Status	Preview	Comments	Updated (UTC)
drei	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 10, 2024 5:42pm

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