Serious Issue With Pattracing/PMC with Max plugin (HELP!)

3D Studio Max Plugin (Export Script Plugins developed by [gk] and KilaD; Integrated Plugin developed by Karba)
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Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

Right off the bat I've found that an issue with pathtracing and PMC. It seems that max depth seems to be messed up for me. Is this happening to anyone else?

Any max depth past 2 creates huge problems.

I'm using max 2012 with octane 2.57.

Help would be greatly appreciated!
Attachments
Pathtrace max depth 16.PNG
Pathtrace max depth 3.PNG
Pathtrace max depth 2.PNG
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gabrielefx
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Joined: Wed Sep 28, 2011 2:00 pm

Draydin_r wrote:Right off the bat I've found that an issue with pathtracing and PMC. It seems that max depth seems to be messed up for me. Is this happening to anyone else?

Any max depth past 2 creates huge problems.

I'm using max 2012 with octane 2.57.

Help would be greatly appreciated!
I don't see any problem in your settings...except that you play a lot with gamma, exposure, aperture....
you should think like to use a real camera

generally I use 8 - 12 or 16 bounces using PT or PMC, I never render with PT...I use it only for previews
For direct lighting you can use 3-5-8 bounces. For exteriors ambient occlusion and 5 bounces is the ideal config.

Use an Evermotion scene with Vray materials and convert it with the plugin, you will understand how Octane works.
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Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

For the most part the play with the settings had more to do with trying to see what was wrong.

I'm just at a loss as to why there is such a difference between octane standalone and the plugin. The max depth setting has never produced this effect for me for as long as I've used it. With more playing around I've noticed that the vast majority of the kernels seem 'off' from what they should be. Though I could live with that, this issue with the bounces really limits what I can do by comparison to the main software.

After having used octane for the last year and a half this is extremely vexing. From all my experiences with octane, this bounce issue has never happened to me before.
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gabrielefx
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Draydin_r wrote:For the most part the play with the settings had more to do with trying to see what was wrong.

I'm just at a loss as to why there is such a difference between octane standalone and the plugin. The max depth setting has never produced this effect for me for as long as I've used it. With more playing around I've noticed that the vast majority of the kernels seem 'off' from what they should be. Though I could live with that, this issue with the bounces really limits what I can do by comparison to the main software.

After having used octane for the last year and a half this is extremely vexing. From all my experiences with octane, this bounce issue has never happened to me before.
you added lights in your scene?.... I see a black background but the sphere is illuminated

in Max change the floating point visualization to 5 decimals to see how ray epsilon is set. I use a value of 0.0001 or 0.00001
This setting will help you to set glossy parameters because a value of 0.00001 is different from a 0.0001. Now you can't set it.
Vray parameters use 256 values, from black to white, Octane uses floating point values.
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Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

Sadly no effect. The issue stems with or with out active lights and will behave the same way with ambient lighting and no direct lighting what so ever it seems. :S
Attachments
Pathtrace max depth 16anolight.PNG
Pathtrace max depth 16a.PNG
Pathtrace max depth 3a.PNG
Pathtrace max depth 2a.PNG
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roeland
OctaneRender Team
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Joined: Wed Mar 09, 2011 10:09 pm

Is the sphere touching the plane? What happens if you leave a tiny gap between the sphere and the plane?

--
Roeland
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Karba
OctaneRender Team
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Joined: Sat Jun 11, 2011 9:05 am

Draydin_r wrote:Sadly no effect. The issue stems with or with out active lights and will behave the same way with ambient lighting and no direct lighting what so ever it seems. :S
Some times it can happens bacause of plugin licence.

Try to do next

go to
C:\Users\Andrey\AppData\Roaming\Refractive Software (just type
"%appdata%" in command line to get C:\Users\Andrey\AppData\Roaming\)
And remove all folders with name inside {}, like
{d3d9446802a44259755d38e6d163e820}
Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

Hey Guys! Thanks for the reply!

@roland

It was intersecting with the box, but the problem still occurs with or without intersection. I still wonder if this is in relation to occlusion, the proximity of the objects in relation to the light and seeing the results of the error seems very coincidental (See Attached)

@Karba

I deleted the folder and restarted both programs (max and octane), the issue still occurred.

So what should I try next?
Attachments
Same as 1-c.jpg but without blackbox light source.
Same as 1-c.jpg but without blackbox light source.
Sphere further above the box.
Sphere further above the box.
Without intersection but slightly above the box.
Without intersection but slightly above the box.
With the objects intersecting.
With the objects intersecting.
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Karba
OctaneRender Team
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Joined: Sat Jun 11, 2011 9:05 am

Can you try to assign diffuse material to the sphere and box and set the diffuse color to black?
Draydin_r wrote:Hey Guys! Thanks for the reply!

@roland

It was intersecting with the box, but the problem still occurs with or without intersection. I still wonder if this is in relation to occlusion, the proximity of the objects in relation to the light and seeing the results of the error seems very coincidental (See Attached)

@Karba

I deleted the folder and restarted both programs (max and octane), the issue still occurred.

So what should I try next?
Draydin_r
Licensed Customer
Posts: 154
Joined: Fri May 13, 2011 2:34 am

Well, this is confusing. The black does remove the issue but if something is even slightly off black it returns....

For reference, max depth is 16 for both
Attachments
1-offblack.jpg
1-huh.jpg
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