Vanishing Mesh - Mysterious LOD?

[Sangoire]

I have mesh decorations clustered together and there's a strange happening when a few of them randomly vanish. I have my LOD Factor set to 4 and have experimented with my the Graphics sliders and even tried updating my Graphics card to no avail. As far as I'm used to with LOD the detail should slowly disappear the more you zoom out but with the mesh I have rezzed the LOD appears when I zoom out but dissappears when I zoom in.

Someone said in Blender Avastar group that lots of mesh cannot be clustered together or this may happen. But I've never experienced this before with years in SL and decorating houses with lots of mesh. Mesh for me have never disappeared zooming in but standard with some low LOD objects when I zoom out.

Does this vanishing mesh when you zoom in happen to anyone else? Or does anyone know why this can be happening? And if so, please enlighten me.

[Chic Aeon]

I have never seen this but my first TESTING question would be :

 

What happens when you move the mesh that disappears AWAY from its neighboring mesh? Is the same zoom in issue apparent?

 

Is there any possibility that this might be an alpha issue???? It might be that an not the mesh; it can act similarly.

 

Will be interested in "the answer" if someone knows .

 

 

[Callum Meriman]

Using Firestorm?

 

There is a firestorm Jira for this invisible/reappearinvisible again mesh, Whirly did replicate it, but the Jira is left festering.

 

My 8F8 house is very prone to this, something bad in the upload maybe. It's absolutely shocking.

[Nalates Urriah]

What are the mesh items? Where can we see them?

Is this mesh you made or someone else?

Could these mesh items have been uploaded with reversed LoD's? Meaning the small poly model loaded as LoD 1 and the high-poly models as LoD 4.

[Pamela Galli]

There was a bug like this a few years ago. I made a mesh object that would disappear when  you moved the camera closer, and appear when you move back .

[Drongle McMahon]

"What are the mesh items? Where can we see them?"

Yes. That would be necessary as a minimum for any really useful comment. Even better would be to see the collada file(s) and know exactly what options and parameters were used in the uploader.

ETA - actually, Theresa's comment below is really useful without that info. So my statement is not accurate. However, being able to look at it would quickly reveal whether it is indeed the effect of excessive triangle counts.

[Theresa Tennyson]

If you have a lot of small high-polygon objects close together it will make the viewer run out of memory for that "node" (local area.) Increasing your LOD will actually make the problem worse. This JIRA describes the issue. Note that there's a workaround, but like most of these workarounds you'll be playing with out-of-memory-crash fire.

https://jira.secondlife.com/browse/BUG-9439