Chaos Corona for Cinema 4D > [C4D] Bug Reporting

C4D | Multishader and UVW randomizer changes on each frame

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Cinemike:
Is, in any way, the number of objects in the scene changing? Raindrops from a cloner, grass count due to a camera frustum, something else?

Lebenzet:
Hi everybody !
Thanks for for help !

I've done my tests :
1• I deactivate all animations except the camera
2• I remove the flyings leaves (particles)

and now it works ! (Ive upload 3 frames)


--- Quote ---Is, in any way, the number of objects in the scene changing? Raindrops from a cloner, grass count due to a camera frustum, something else?
--- End quote ---

Cinemike, you have to be right. I had in my scene a grass count dur to my camera and particles which generate flying dead leaves. I removed them in my last test.
I'm going to do some more tests activating one thing after another... Do you have any explication or advice ?

Thanks

Lebenzet:
Hi again !
I've done all my tests and I can confirm that Cinemike was right :
The problem occurs when :

• I have camera clipping on my Corona scatters (easy so solve... just deactivate them)
• I add a particle emitter (used to have dead leaves flying before the camera)... It's unfortunate that I can't use this.

...even if the scattered items and the objects in the particle emitter don't use these materials with UVW randomizer or/and multishaders.

In conclusion : the number of objects in the scene has to constant during all the animation. As you can understand in this case, it is a limitation.
I hope this can be fixed in the next versions.

However, I precise that it is possible to animate the objects... In this case the trees and the shrubs.

Thanks again for your help.

Cinemike:
My personal advice: Don't use the Corona shaders in this particular case.
Use the native variation shader instead and in there the Object Variation method "Object name", not the default "Objects" and see if that helps. The variation shader also has a built-in UV randomizer as a bonus.
As for the native Corona shader: hope for the best and wish for the "Object name" method to be added.

I hope this helps, curious if it cured your issue.

PS
Always put the object number changing objects deep to the bottom of the hierarchy in the Objects Manager.

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