Distributed Render and IES files

[snivlem]

Hi,

As attached you can see where the local machine differs from the slave machine. In general there's some sort of weird light leak where the IES profile is not being read properly on the slave's buckets.



I've increased sharpness in photoshop so you can see the edges properly. The second arrow (closest to the bottom of the image is the host's bucket which is rendering correctly) The first issue is the slave's bucket which seems to be incorrectly rendering the IES light.

Two things to note, is that I'm using Brute Force on this, no irradiance mapping. This isn't a light leak issue as the host's bucket is fine.
I'm also using UNC paths to which both machines have access to this particular IES file. It's not a permissions issue as the rest of the render is perfect apart from whenever I come across IES files.

[2012/Jul/25|09:53:55] V-Ray: V-Ray for Maya version 2.25.01, revision 22272 from Jul 24 2012, 01:58:32
[2012/Jul/25|09:53:55] V-Ray: V-Ray core version is 2.00.02
Maya 2013x64


Thanks!

[snivlem]

On a second render, it seems the slave is actually rendering the IES light properly, but there is still a discrepancy around this corner and it only seems to happen around IES lights. The rest of the image is perfect.

Maybe it's to do with the light cache not generating near IES lights on the slave properly?

[vlado]

What is the number of prepasses for the light cache? If you render just with the light cache for both primary and secondary bounces, do you still get a discrepancy?

Best regards,
Vlado

[snivlem]

Hi Vlado, its set to 8. Both machines have 8 cores.

I don't get a discrepancy between the two when I use primary and secondary light cache. I definitely think it's caused by an IES file.

[Zdravko]

Would it be possible to send us this part of the scene to : support@chaosgroup.com
or attached here?