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Bug: disappearing objects

Horst18519

Horst18519

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Arno, I think I found a bug in MCX. If I use the earth correction option I sometimes have disappearing objects afterwards. See images:

EDIT: disregard the next paragraph, just found out that's actually not the case.

If I slew around the airport, some of the vehicles pop up (132) just to vanish a fraction of a second later (133). Most of the time they are invisible, only now and then they pop up, but always for a very short time only. Note that other vehicles (part of another MDL, placed at the same coordinates, also earth corrected) work fine. Even the shadows, part of the vanishing object model, stay. Only some parts of the model vanish. All those parts (vehicles) share the same texture, so it might be related to vertices per texture or something like that.

Just found out that those disappearing objects are part of different models. So it has not to do with the model itself, rather the texture. For some reason, all objects sharing that one texture disappear sometimes. How could that be when other parts of those models are static?

Any ideas on that?
 

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Hi Thorsten,

Does it happen from any angle? Sounds a bit like a bounding box issue.

Also are you sure there is no missing night texture or something like that.
 
Unfortunately it's neither related to bounding box nor textures, both seem ok. I'll do some more testing on it.
 
Unfortunately I couldn't solve this issue yet, but it's not related to MCX. Even if I export the objects and compile them directly, some parts sharing that one texture disappear.
It has to do with that one texture. I have 5 different models containing vehicles. All models contain several vehicles with 4 different textures. I can't group all vehicles with one texture into one mdl because of the 65.000 vertex limit. So I group them in another way. In the end all 5 models contain all kinds of vehicles with all kinds of texture. All those models share one problem: only the vehicles that use that one texture are disappearing all the time. So the problem is not related to placement, tweaking or other things that could come from the models. It's the texture that seems to create the problem. But how can that be? :confused:
 
Hello Thorsten,...

Sounds like a transparency issue,... do you have a non converted texture of this texture also? Let us see it? Have you viewed it through imagetool yet?

How was this texture created?
 
Well, never mind, I think I was able to fix it by creating a new material for the affected objects and reassigned that material to them.
Funny enough, doing that for only a part of those models solved the issue for all of them! So I think there's something in FSX that will make models behave weird if they share a material that is also shared by another model that might include some issue. That was probably the case here, one of those models might have had a wrong setting in that one material slot.
Even more weird: converting those models to FS9 worked just fine, so the models didn't work in FSX but after converting them to FS9 they worked in FS9.
One more time FSX shows how you can never know what's happening inside...

EDIT: Thanks for the help anyway! :)
 
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