glass material rendering

[minzy]

Hi, I’m Houdini beginner

I made ‘roll a dice’ work
So I used RBD node, It was made that dice and ground are clashed

Now I got problem
After rendering I checking my work, I found dice’s glass material have keep changing
I tried to get the value to 0 when the dice fell and stopped because of the bounce and friction values of the RBD node
It looks better but still PROBLEM

[tmdag]

Would be easier to debug with an example scene.

but few questions:

On 3/16/2019 at 3:57 AM, minzy said:

glass material have keep changing

- keep changing how ? ( i only guess you meant that jittering at the end of animation?)

On 3/16/2019 at 3:57 AM, minzy said:

I tried to get the value to 0

- get value of 0 of what? what value ?

Edited March 17, 2019 by tmdag

[minzy]

yes jittering

 

 

[CinnamonMetal]

Increase your sampling within Mantra with regards to the jittering ? 

[davpe]

hard to say without inspecting the scene but i'm pretty sure this artifact is rather the geometry/animation problem than material/rendering thing. my guess would be either somehow jittery normals, doubled prims/edges or something along those lines.

[Midasssilver]

My guess is that the jitter is present in the animation. There is already some weird velocities present on that 3rd bounce. The jitter at rest is probably a product of whatever is causing that. Perhaps you should enable sleeping on the RBD?