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Author Topic: Difference in renderbuckets 1 cpu  (Read 8604 times)

iToo

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Re: Difference in renderbuckets 1 cpu
« Reply #15 on: July 27, 2013, 09:37:04 AM »
If you have the same problem again, please write us. Anyway, usually these type of issues are not directly caused by Forest, but by some configuration issue, missing maps or something else.
Carlos Quintero
iToo Software

NL2911

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Re: Difference in renderbuckets 1 cpu
« Reply #16 on: July 29, 2013, 04:21:10 PM »
Well i still have this problem with some models.
I also happen to find the models  i used are made with a newer version of MassFX.

If i open the model directly i get this error;
The MassFX authored in this file was created with a newer version of the plugins. Foward compatibility is not supported, so thing might not behave properly.


*IN a new scene i instanced the merged model. Checked the texture paths. Rendering --> no problem.
*Then i made a forest object for scattering. Rendering --> problems in different buckets.
*Then i used forest tools to instanciate. Rendering --> no problems.

3ds Max 2014 SP1.
1 computer rendering.

At the moment it only happens to models which i got this error with.
So maybe MassFX could be the problem??



« Last Edit: July 29, 2013, 04:33:33 PM by NL2911 »

iToo

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Re: Difference in renderbuckets 1 cpu
« Reply #17 on: July 29, 2013, 05:45:53 PM »
Theorically this error refers to MassFX versions, but it's not related in any way with Forest. We don't use MassFX for anything.

What is the format of the failing models, standard meshes ? If you send us a test scene we may check it here.
Carlos Quintero
iToo Software

NL2911

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Re: Difference in renderbuckets 1 cpu
« Reply #18 on: July 29, 2013, 06:24:51 PM »
Yes i think so, but i cannot delete the massfx info from the file and i only have problems when using forestpack.
I just send you the file by mail to check.

I also started a Case with Autodesk about the MassFX warning and how to solve.
 
Hope there's a workaround soon.
Thanks in advance!

iToo

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Re: Difference in renderbuckets 1 cpu
« Reply #19 on: July 30, 2013, 09:24:43 AM »
Thanks for the file. Please, would you send us the textures as well ?

Regarding the problem, on your initial post there was bucket differences rendering with a single workstation (no DR). What is the case for this scene, DR or single node ?

BTW: i got no MassFX errors opening this scene (Max 2014 SP1).
Carlos Quintero
iToo Software

NL2911

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Re: Difference in renderbuckets 1 cpu
« Reply #20 on: July 30, 2013, 09:54:46 AM »
I send the file again with textures.

I only got a Massfx warning the first time i open the file (2014 SP1)
When i was working with 2013 i always got the error. Not when i merge the file.

I rendered with only one computer; my workstation.






iToo

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Re: Difference in renderbuckets 1 cpu
« Reply #21 on: July 30, 2013, 10:42:32 AM »
Thanks. I did render the scene using the default settings, but the problem is not reproducible here (Max 2014 SP1, FP 4.0.3, VRay 2.40.04).

Anyway, i noticed that "Distributed rendering" is enabled in your scene. Is there some difference turning it off ?

Also i see that the number of clumps between "No error.jpg" and "Error1.jpg" doesn't match. Please, would you repeat the test converting to instances ? (Forest Tools). Just to be sure both renders are done under same conditions.

I've found a thread in ChaosGroup about a random gamma issue. I'm not sure if it would be related with this problem:

http://www.chaosgroup.com/forums/vbulletin/showthread.php?70617-Wrong-Gamma/page7
Carlos Quintero
iToo Software

NL2911

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Re: Difference in renderbuckets 1 cpu
« Reply #22 on: July 30, 2013, 11:15:06 AM »
The Gamma issue is still related to rendering with DR nodes.
I am rendering only with my Workstation :) please let this be clear.

When i started this thread i already spend 4 hours trying to solve the problem. The basic's are to check textures paths, render without DR, strip the scene, etc. The DR is checked probably because i did more testing after i saved the file.

Very few people got the massfx problem which makes it hard to get attention and to reproduce the problem. But i have a very strong feeling this is causing the errors. I can probably reproduce those errors with  more models from different packages. All the models that fail scattering are models i got the MassFx warning with. 

You can see the attachments (still errors; but less noticeable)



iToo

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Re: Difference in renderbuckets 1 cpu
« Reply #23 on: July 30, 2013, 11:41:18 AM »
Ok, you thanks for your help. We should wait the reply from Autodesk about the MassFX error.

It's a very strange problem, because in this case Forest has no effect on the render, it just scatters the items. Please, make one additional test:

1) Create a VRay proxy from the grass clump.
2) Repeat the render, using the proxy as Custom Object.
3) Convert to stand-alone objects and repeat.

Since Forest uses internally the same VRay engine used for proxies, i want to check if there is some relation.
Carlos Quintero
iToo Software

NL2911

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Re: Difference in renderbuckets 1 cpu
« Reply #24 on: July 30, 2013, 12:35:14 PM »
This is getting strange.

I made a proxy of the grass clump. Used the proxie with forestpack. Rendered --> no errors
Forest tools --> instanciate. Rendered --> i got errors..
I made a new forestobject, used the proxie again. Rendered --> errors

* It looks like the reflection/specular is missing in the first, but i'm not sure which one is rendering correct.

I think we have to wait for Autodesk to reply indeed.
Thanks




NL2911

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Re: Difference in renderbuckets 1 cpu
« Reply #25 on: July 31, 2013, 06:14:05 PM »
Autodesk also got the Massfx warning, which was strange because their using the latest Autodesk.
They could not reproduce the problem with mental ray.

I think i found the problem though..
I  first tested with a standard material on the object; no errors.
Then i remade the vray 2sidedmaterial, rendered and i have no errors.

So i think the material got corrupted along the way..

Hope this helps!

(ps; the massfx warning was just coincidence....)

iToo

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Re: Difference in renderbuckets 1 cpu
« Reply #26 on: July 31, 2013, 10:16:03 PM »
Finally i could reproduce the problem using proxies (no Forest). It's clearly a VRay bug.

I have reported the problem in the ChaosGroup site:
http://www.chaosgroup.com/forums/vbulletin/showthread.php?73561-Buckets-difference&p=587243#post587243

Carlos Quintero
iToo Software