Disappearing meshes (Max)

PolyHertz

Meshes with turbosmooth modifiers on them have a tendency to disappear from the viewport, often when refocusing (Z) or sometimes completely at random. The workaround I've been using is to enter and exit isolation mode for any random mesh that's still visible in the viewport.

I've had this one problem in Max (across multiple versions and hardware configurations) for years, and have never found a proper solution to it. I was wondering if anyone had had similar issues before and knew of a way to get rid of this glitch once and for all?

.morph3us

hm... i think its the same, but for me it also works to just minimize and maximize the viewport.
and although its mostly smoothed models it does happen to not smoothed ones, too, at least over here...

S_ource

It happens to me to but i have no idea why it happens.

PolyHertz

bump

gsokol

It has happened to me before too. I Wonder if its a bug related to adaptive degredation. Try turning that off (hotkey is the letter "o") and see if it still happens.

monster

Next time it happens try typing this into the Maxscript listener:

forceCompleteRedraw doDisabled:true

Not sure if that will work, but it would rule out viewport and graphics card settings.

PolyHertz

gsokol and monster: Nope, tried both of those things and no luck

dustinbrown: I tried hardware shading but it didn't help. However it did lead me to finding another workaround. If I do something like this (where meditMaterials[1] is the material assigned to the dissapearing meshes) they re-appear:

meditMaterials[1].DirectX_Manager.enabled = off

In fact refreshing/changing the material in any way will make the meshes that it's assigned to reappear.



So it seems like the glitch may be linked to a bug with the materials. Anyone got some ideas on where to go from here?

Umar6419

Can you post a Image.. ?

S_ource

Maybey you are using directx shader for materials? Now that i mentiond it it may have ocurd when i used xoliuls shader.

PolyHertz

Nope, standard materials. I never use DirectX materials while modeling, just final presentation.

Umar6419: Image of what? There's nothing really to show. One minute the model is there, the next it's gone. No screen corruption or anything of that sort.

monster

I remember having problems with the directX rollout in a standard material. (Not a directX material)

poopipe

have you tried forcing full viewport redraw - I forget the exact wording but it's in your driver configuration under DirectX.

Umar6419

try Changing 3ds Max Graphic Mode ..

Wonkey

I had a problem similar to this. I just do a select by name (h), and it reappears. I'm not using special materials, so I don't know if this will help you or not.