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Author Topic: Group Lights not turning Off  (Read 346 times)

RTstudio

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Group Lights not turning Off
« on: June 05, 2022, 01:39:12 AM »
Hello There, I have recently installed the newest release for Max 2023, Im using a lamp group with a light and everything works ok but its not turning off, I can change color, intensity, use color map on the original group, but the On/Off Switch doesn't work, is this normal behaivior?
« Last Edit: June 05, 2022, 10:00:53 PM by RTstudio »

Paul Roberts

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Re: Group Lights not turning Off
« Reply #1 on: June 06, 2022, 11:58:26 AM »
Thanks for reporting, I can reproduce this issue here. I'll pass it on to our development team.

Cheers,
Paul
Paul Roberts
iToo Software

RTstudio

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Re: Group Lights not turning Off
« Reply #2 on: June 06, 2022, 04:40:10 PM »
Hopely I could get access to that fix, my maintenance plan will expire soon  :-[

Paul Roberts

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Re: Group Lights not turning Off
« Reply #3 on: June 06, 2022, 04:45:23 PM »
In further testing we've discovered the same issue is present in V-Ray instancer which means it's a V-Ray issue rather than specific to Forest Pack. We can't do a lot in these cases, it's something that Chaos will need to fix.

Cheers,
Paul
Paul Roberts
iToo Software

RTstudio

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Re: Group Lights not turning Off
« Reply #4 on: June 06, 2022, 04:49:32 PM »
 :o Ufff, well I can relax a little knowing that there are a couple of things that Chaos has to fix with this VrayInstancer, the Cryptomatte_Material in hidden objects and this.
Thanks Paul!!!

Paul Roberts

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Re: Group Lights not turning Off
« Reply #5 on: June 06, 2022, 04:52:06 PM »
No worries. I've emailed Chaos to let them know.
Paul Roberts
iToo Software

Paul Roberts

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Re: Group Lights not turning Off
« Reply #6 on: June 07, 2022, 09:22:43 AM »
Hi,

Further to our discussion, Chaos has got back to me. It turns out the behaviour is deliberate because internally in V-Ray, a  disabled (turned off) light = hidden/non-renderable light. But most of the time you want the source object to be hidden when instancing, so they kept the logic from the case with hidden geometry.

As a workaround, it's suggested to tweak the intensity multiplier of the light instead.

Hope that helps to clarify things
Paul
Paul Roberts
iToo Software

RTstudio

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Re: Group Lights not turning Off
« Reply #7 on: June 11, 2022, 05:12:15 PM »
Hi Paul, thanks for the quick reply, I have tested this issue with different versions and here are my ressults:

-Vray 5.2.3 + ForestPack 7.4.1
Doesnt Work

-Vray 5.2.2 + ForestPack 7.4.1
Perfection!!!

-Vray 5.2.3 + ForestPack 7.3.1
Doesnt Work

-Vray 5.2.2 + ForestPack 7.3.1
Perfection!!!

So.... as Chaos said if this is deliberate, it only ocurrs in the latest build :'( it didnt happen before  :-\. Hope this issue with Vrayinstancer could be solved