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Non-Phantom Megaprims

Posted: Mon Jun 08, 2020 11:22 pm
by Shandon Loring
Are non-phantom megaprims now prohibited?
They used to be permitted... but now when I change a megaprims Phantom setting to non-phantom (even using a script) it collapses to the normal 256m limits.

This also affected some regions I had previously created, sp. Winterworld, where the sim surround that was non-phantom, has now collapsed making an ugly mess.

I suppose performance could be impacted by non-phantom megaprims? But for our purposed high performance is not really an issue in these limited 'backdrop' type sets.

Just curious...


Re: Non-Phantom Megaprims

Posted: Mon Jun 08, 2020 11:52 pm
by Ilan Tochner
Hi Shandon,

It's nothing we changed intentionally but if it was changed then it happened when we upgraded from OpenSim to OpenSim

That said, anything that is only meant to be a backdrop should always be phantom, regardless of size. There is no good reason to create extra load on the physics engine by making something collidable if avatars aren't going to be interacting with it.

Re: Non-Phantom Megaprims

Posted: Tue Jun 09, 2020 12:28 am
by Shandon Loring
Thanks Ilan...
If that is the new reality we'll just have to accept it I suppose.. unfortunate.

Our guests do interact with the backdrops in a limited way, like walking around the immediate area of the story session.
This does not require great performance, but it adds to the realism of the event.

Allowing the megaprims to be non-phantom allows avatars to walk on large Sim Surrounds.

The venue for next weeks story at Westworld is set on a wooded mountain slope, using megaprim surrounds at 1500m gives a feeling of huge expanse. Guests will mostly be walking around only the immediate area of the story, though they may like to wander about a bit, but since the prims are phantom we need to add invisible prims under the megaprims to support walking, along with invisible barrier prims to prevent falling through, which all just looks mostly silly.

Another place we used this was Winterworld which is normally a 1x1, but for the weeks of any winter story we can move it up to a 3x3 and allow exploring the mountain terrain and have events in snowy mountain caves and such. This also allowed us to have a 3x3 region of ski-able slopes.
And then we would resize the world back to 1x1 for 'off season'. Now since it has collapsed our cave venue, ski lodge, and all that fancy fun stuff is just hanging in open space and slopes are no longer ski-able.

Admittedly, anytime one chooses to work outside of normal parameters there is a risk that the 'exploit' may stop working at some point. :lol:

But... still... would love to be able to have non-phantom megaprims again, but if it can not be then it can not be.

thanks for all you do!