Invisble objects when using symmetry

[RwVision]

Hi

Vray 5 still has issues with instancing / symmetry?

Is this Vray or c4d problem?

When rendering symmetry, vray does not render the bolts visible in editor - even when I turn them editable from instances:
(I can't find a workaround other than wasting time setting up unnecessary instances)

[deyan.hadzhiev]

Hi RwVision, if the geometry is visible in the viewport, then it is likely a V-Ray issue. From my simplified tests, I found there is a problem when there are geometry objects with the same name and the scene is rendered either with V-Ray interactive or in the viewport (either with region or full).
Can you test if either changing the geometry name of duplicating polygon objects or rendering in PV or V-Ray production solves the issue? Even if it does, I'll log an issue to investigate what causes this, but it may be a viable workaround until we fix this.

[RwVision]

Hi deyan.hadzhiev


Thanks for the reply - yes, geometry is visible in viewport, but not in rendering:

- Changing names of the instances did not work
- When rendering to pv the bolts are visible

[klex167]

same here .. very easy scene with cubes. rendering in the viewport is not correct: objects are missing (randomly). rendering in the picture manager works.
but its importent to check complex scenes in the viewport. in my case every object has a different name!


I can share the scene if needed.

[aleksandar.kasabov]

Hello klex167 and apologies for the delayed reply.

It would be helpful if you can share the test scene with us. Also, please let me know which version of V-Ray do you have installed. Thank you.

[klex167]

Hi Aleksandar,
thank you for the reply!

My version is hotfix 3 (v5.00.45 from Apr 27 2021).
Scene in the attachent.

best - klex

[aleksandar.kasabov]

Hello klex167 ,

Thank you for the scene. It seems like this issue only happens when the instanced object is a null with children objects. For example, if you directly instance the cube the issue is no longer reproducible. I have logged this in our internal bug tracking system (bug ID: VC4D-976) and I will let you know once we have any updates.

[klex167]

Understood. But the null is important to group more than just one object (like RwVision does). My example scene is just a very simple version of the original one where I had to cope with this issue. Thanks for working on this.
Until the problem is solved I will avoid symmetry-objects and use instances with negative scale instead.