How is light sampling handled in CUDA mode?

[biochemical_animations]

I have an animation flicker that looks to be in the lighting pass. I have retrace set to 8.0, but it still occurs. Tried LC at 3000 to no avail. It's a dancing noise in the shaded area of a certain model. I have a new vraymtl set on the override, no reflection. It's a large dancing noise, that looks like a light leak. I'm using LC+BF. I wanted to try setting the sampling of lights higher, but they are disabled. Is light sampling handled a different way in RT CUDA?

[biochemical_animations]

As a test, I uninstalled beta 3.5.02 and went back to 3.4.03 and the flicker was totally gone and everything was amazingly smooth and clean on movement. Just thought I'd let you know.

[vlado]

It would be extremely helpful if you can send me a scene for investigation to vlado@chaosgroup.com - we did have a similar issue, which is fixed AFAIK for 3.50.04, but it would be good to confirm it.

Best regards,
Vlado

[biochemical_animations]

I would if I could, Vlado, but there are proprietary engineering models in the scene that I'm unable to share other than what the camera is viewing.

That's good to know, about 3.50.04. I'm interested to test that out. I'm doing a test render with 3.40.03 right now, and my render times are like 8-9 minutes, where under 3.05 they are like 4-5.

[vlado]

Can you email me to vlado@chaosgroup.com with the 3ds Max version that you are using? I can get you a build to try out.

Best regards,
Vlado

[biochemical_animations]

I just sent it...thanks.

[biochemical_animations]

Hey Vlado,
Just planning my day today, will you be sending that build today? Thanks.

[vlado]

Hey Vlado, Just planning my day today, will you be sending that build today? Thanks.

Yes, just sent you a link.

Best regards,
Vlado

[biochemical_animations]

Thanks...I'll get testing

[biochemical_animations]

So far, initial tests look clean and smooth...no flicker with build 35701 running a short clay render. I'm going to do a little more testing throughout the day just to check some other things out. Thanks for the build.

[biochemical_animations]

Hey Vlado,

It looks good. I did a full render with textures and such, and got no flicker. Thanks for the help.

[vlado]

Good to know Thanks!

Best regards,
Vlado