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Messages - maru

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[Max] General Discussion / Re: 3ds Max 2023 slow startup
« on: 2022-06-23, 13:33:09 »
This is now resolved, right? You don't need any further help?

[Max] Feature Requests / Re: Mikk T Support
« on: 2022-06-23, 09:38:07 »
Logged, but please keep in mind that this will be treated as very low priority. If you know other users who need this, or if you are such a user, please let us know here.

(Internal ID=919678353)

[Max] Daily Builds / Re: Chaos Licensing Feedback/Help
« on: 2022-06-22, 17:29:53 »
Dear Corona Renderer team,

some time ago I have posted my questions about licenses for chaos scatter, because now it has cross platform functionality, and it can work with corona and vray.
My original post was before announce of vray6 beta, where chaos scatter also comes in bundle. And at that time there was also no separate section for chaos scatter in chaos license server. I don't know if there is some difference between corona8 and vray 6 CS editions, right now I am using chaos scatter from corona renderer 8 and have always license issues.

I have:
- vray next- 5 licenses
- vray 5- 2 licenses
- corona renderer- 2 licenses (at the moment ;)
The problem is that Chaos Scatter does not recognize any Vray license at all. We bought 2 x corona , chaos scatter recognize also 2 licenses in his pool.

If I start some scene in 3ds max 2022 where I use chaos scatter in vray - one chaos scatter license is gone
If I start another scene(at the same time) in 3ds max 2019 where I also use chaos scatter in vray - second license is gone
Same time, Chaos license server shows that all 2 licenses for corona are not in use.

It this normal? Because right now this license issue makes the usage of Chaos Scatter in cross platform mode almost impossible :(
As I understand, chaos scatter should have 5+2+2 licenses - all corona and vray products which I currently have, isn't it ?
Please halp.

Many thanks in advance

Hi, sorry to disappoint you, but it seems that you just tried using Scatter with V-Ray too early. Please note that currently:

Chaos Scatter works with Corona 8. It does not work with Corona 7 and older. A Chaos Scatter license is provided with a Corona 8 license, but not with licenses of older Corona versions.

Chaos Scatter works with V-Ray 6 (to be released soon). It does not work with V-Ray 5 and older. A Chaos Scatter license is provided with V-Ray 6, but not with licenses of older V-Ray versions.

Licensing issues when using both Corona and V-Ray will be addressed soon so that Scatter will be usable in "cross-platform mode".

In your post you wrote that you have V-Ray Next and V-Ray 5 licenses. It is not expected for Chaos Scatter to work in this case, unless you only use it with Corona 8.

So this issue should be resolved really soon.

Here it is:

Specular mapping: Disney Specular mapping uses the following formula: IOR = 2 / (1 - SQRT(Specular * 0.08)) - 1 and maps Specular in [0,1] to IOR in [1, 1.8].

You can use the above formula. Not sure what software you will use for the conversion, but you should be careful about the fact that the resulting texture will have values over 1.
If you want to avoid such issues, you can compute 1/IOR instead. When Corona gets IOR texture, it automatically inverts all values lower than 1, meaning it will internally turn 1/IOR texture to IOR texture.

The above info comes from our Magic Department, so if you have some further questions, please let me know and I will do my best to get the answers for you.

This is an intended behavior. Displacement is following the direction of averaged normals. I understand that the behavior that you would like to see would be displacement being always perpendicular to the surface, right? So for example if we create a box with just 6 faces (no additional subdivisions), each face would be displaced exactly in the direction of each of the faces' normals.

But if we do this, what would the corners of this box look like? :)

DR issues are often hard to diagnose. It may be related to your network setup. Can you explain how your computers are connected? Are they both plugged into a switch, or maybe connected directly with a cable, or maybe something else?

We can suggest some basic troubleshooting but it would be best to contact our support team here:

[Max] General Discussion / Re: Corona 8 License issue
« on: 2022-06-22, 13:44:03 »
It definitely should not crash. Please contact us about this here:
We may not be able to provide full licensing-related support over the forum (we may need some confidential info like the registered email address or order number).

Thanks in advance.

It looks like your computer crashed during denoising. You should definitely investigate this as it might mean that it is overheating or there is some other hardware issue.
Because it crashed, the file was saved corrupted, with some data missing.
This is why it cannot be opened.

"enable direct reads" - where exactly did you find information about this? I am not aware of a 3ds Max or Corona option like this.

You can also do it procedurally with textured AO -
and possibly with the v8 curvature map -

Hope that helps! :)

I am trying to get some useful info for you... stay tuned! :)

Could it be because there is no sun in the scene at all? We are using a physical sky model, so it is expecting sun to be present and at some reasonable position.
Scratch that, it should not happen anyway.

[Max] I need help! / Re: Low CPU usage with passes
« on: 2022-06-21, 17:24:59 »
Is it the same regardless if you render your image in very low vs high resolution? (like 640x480 vs 2560x1440)

[Max] Daily Builds / MOVED: Chaos Scatter Playground!
« on: 2022-06-21, 14:45:12 »
This topic has been moved to the dedicated Chaos Scatter section: [Scatter] Feature Requests.

You can now find it here:

[Max] Daily Builds / MOVED: Chaos Scatter feedback
« on: 2022-06-21, 14:43:56 »
This topic has been moved to the dedicated Chaos Scatter section: [Scatter] Feature Requests.

You can now find it here:

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