instance or not instance?

[gilicom]

Hi all
I'm working on a stadium interior with all the seats ,
my question is should i use instance withe vray 1.09.03 or should i make them uniqe?
what is the diffrence between the replicate and instance in the system dialoge (vray)?
I remeber looking at a topic that were doing also a stadium interior can somene post me to it?
Thank you

[trixian]

I suppose it depends on how many duplucates you are going to need. If you only need a few, then it most likely won't matter much (although instanced geometry is a hell of alot easier to handle inside of max when modeling and seting up your scene). As for a stadium with seats, I'd definately go with instances. There are a few issues with mirrored instances with the 1.09.03 builds as far as I can remember, but I haven't run into any instance problems in 1.45.70.

[gilicom]

ok

ok, i've used instance with in the max
at the render dialoge i've tried once with instance and once with replicate
instance - much faster solution but half of the seats came out black
replicate - evrything is ok but slower
anybody know somthing about it?

[natty]

hi
did you mirror Instance your seats ?
you have an old version of vray ... you need version R i do believe.

[gilicom]

yep

Hi natty
yes i did mirror instance them
and i'm using version 1.09.03n
i'm going to check the vray site for the new version
do you think this is the problem?

[PeloEV1]

When you do a mirror instance, the faces are reversed.
In the viewport you see it correctly, but in internal Max see it reversed.
Try a reset xform in the max utils, to correct the problem.
This will break your instance, but it will show you the problem.

Stephane.

[gilicom]

the thing is if i loose the instance vray will render it much slower
then if it was still instanced

[PeloEV1]

The problem is only occuring when you create a mirrored/symetric instance.
Max mirrored/symetric element but face too in internal.
So a visible face are changed in invisible face, and the seats come black.

You can create an instance along a path, or a rotate instance. It should work.

[natty]

are you using max 5 or 6 ? if you are using max6 then upgrade to version R.

[gilicom]

I'm using max 5.1

[pengo]

did the 1.09.03 r solved the instances problem?

Please I have a file of 430 MB if I could use instances it would be less heavy weight

could u reply please?

does the new beta version still has the instances problem?

thanks in advance

[PeloEV1]

Hi,

I don't know about the 1.09.03r. It doesn't installled on my system yet.
But with the 1.46.07, the instance problem doesn't persist for me.

The corrupted instance see trougth 3ds viewport.(symetric instance)


The corrupted instance highlighted by a Reset Xform.


The corrupted instance rendered by Vray 1.46.07.
With older version, the window was black. So now it work.


Hope it help you.
Stephane.