Itoo Software Forum

RailClone => RailClone Pro (*) => Topic started by: KO3272 on February 11, 2015, 04:54:30 PM

Title: Railclone moving at rendertime with RT GPU
Post by: KO3272 on February 11, 2015, 04:54:30 PM
Hey guys,

I've got a scene here where my railclones object are moving out in space only at render-time.
I can see them jump in the viewport as I hit render, and once I cancel the render, they come back into place once I select them.

To avoid having this issue I have to collapse to mesh.

I have this happen with RT GPU, haven't tried cpu yet.
Is this something Vray related or itoo?

Cheers

Stan
Title: Re: Railclone moving at rendertime with RT GPU
Post by: Paul Roberts on February 11, 2015, 04:57:23 PM
Hi Stan,

We haven't had reports of that happening before. Are you able to provide a simplified scene so that we can reproduce it here and investigate? You can send it to support@itoosoft.com if you'd prefer not to post work publicly.

Many thanks,

Paul
Title: Re: Railclone moving at rendertime with RT GPU
Post by: Paul Roberts on February 18, 2015, 11:43:03 AM
Hi Stan,

We have been able to isolate this problem, it only occurs when a modifier is applied to a RailClone object. When this happens RailClone should automatically return a full mesh, but for renderers that use our API it is still returning instances, and causing the problem. This will be fixed in RailClone 2.5.  Fortunately in the meantime there's a simple workaround. For RailClone objects with modifiers applied, go to the Display rollout and disable Use Instancing Engine.
(http://lonelymonk.com/forum_images/feb6a0c7a0a9464ba11252dad635addd.jpg)

You may find by doing this that you actually won't need to apply any modifiers, as it will enable the RailClone features that are not normally supported by V-Ray RT when instancing is left on (such as the material operators). You can see a full list of features that can be enabled in this way on this compatibility chart (http://docs.itoosoft.com/display/RAILCLONE/Rendering+Best+Practices).

I hope that helps.

Many thanks,

Paul
Title: Re: Railclone moving at rendertime with RT GPU
Post by: KO3272 on February 23, 2015, 11:51:21 AM
Hi there,
Thanks for your feedback.

Unfortunately I don't have the same option as you do :
(https://dl.dropboxusercontent.com/u/368267/SNAG-0080.jpg)
I'm using the latest version though : 2.3.4
Is that the same option renamed differently?
Should I use another version? Maybe the beta one?

Thanks

Stan
Title: Re: Railclone moving at rendertime with RT GPU
Post by: Paul Roberts on February 23, 2015, 12:04:24 PM
Hi Stan,

Yes, sorry we've renamed that option in the current beta. In the version you're using you should disable Use Geometry Shader.

Many thanks,

Paul
Title: Re: Railclone moving at rendertime with RT GPU
Post by: KO3272 on February 23, 2015, 12:17:28 PM
Great,
Thanks!