Universal Vray settings

[Thomas An._cg]

Hi all,

After a few attempts, I have not had any success using the universal settings.
In the rings scene, the caustics on the ring itself are very splotchy.

On a seperate scene it takes 6 hours to do the blank area on the upper corner of the image and then when it hits glass ... it is grainny.



How is Vlado getting it to work ?

[vlado]

Universal Vray settings

Hello Thomas,

What are your settings in particular and which version of V-Ray for rhino are you using?

Best regards,
Vlado

[Thomas An._cg]

Universal Vray settings

What are your settings in particular and which version of V-Ray for rhino are you using?

Vlado,

I am using beta13.1.

The settings (Starting from defaults):

• Image Sampler [minSubD=1, MaxSubD=100]
  QMC Sampler [Adaptive=1.0, NoiseThres=0.01]
  Color Mapping [Uncheck "clamp output"]
  Indirect Illumination [Reflect+Refract, QMC+LC]
  QMC GI [SubD=8, Bounces=3]
  Light Cache [SubD=1500, SampleSize=0.001, "Use for glossy rays", InterpSmpls=5

[bdcali_cg]

Universal Vray settings

I think Vlado suggests a noise threshold of 0.001 as a good setting, but every scene is different. Beta versions prior to 13.1 had the Noise Threshold default value set at 0.002, currently it defaults at 0.01.

[Thomas An._cg]

Universal Vray settings

I think Vlado suggests a noise threshold of 0.001 as a good setting, but every scene is different. Beta versions prior to 13.1 had the Noise Threshold default value set at 0.002, currently it defaults at 0.01.

I read somewhere that the thresholds have been re-evaluated and what used to be 0.001 is now 0.01 ? (I could be confused about this though)

In any case. At 0.01 it takes 6 hours for only a small corner... if I let it go it would take a week for the rest ? .... and ... if we set it to 0.001 it will be exponentially longer ?

This can't be rigt, I must be doing somethng incorrectly.

[corey]

Universal Vray settings

Thomas,

I think the noise in your image is coming from your small light cache sample size of .001. Maybe try something a bit bigger and see if that helps you.

As for the noise threshold the new default value is .01. This is new as of beta 13.

Best regards,

Corey