Chaos Corona Forum

Chaos Corona for 3ds Max => [Max] Previews (Daily Builds) => Topic started by: Aram Avetisyan on 2025-08-06, 15:55:07

Title: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-06, 15:55:07
Chaos Corona 14 for 3ds Max Previews Discussion

You can grab the latest Preview from: Previews Changelog (https://forum.corona-renderer.com/index.php?topic=45313.0)


Title: Re: Chaos Corona 14 for 3ds Max - Daily Builds Discussion
Post by: shakedalon on 2025-08-09, 18:25:11
Will be any support to CoronaSlicer in Vantage? We are very proud of the CoronaSlicer because it resolves so much problems,
But the problem now is that it not supported at Vantage...
Title: Re: Chaos Corona 14 for 3ds Max - Daily Builds Discussion
Post by: TomG on 2025-08-11, 12:42:56
Nothing planned at this time, but you can add your vote to the Ideas Portal at https://chaoscorona.ideas.aha.io/ideas/CMAX-I-208
Title: Re: Chaos Corona 14 for 3ds Max - Daily Builds Discussion
Post by: shakedalon on 2025-08-21, 14:38:07
Nothing planned at this time, but you can add your vote to the Ideas Portal at https://chaoscorona.ideas.aha.io/ideas/CMAX-I-208

Thanks - I've posted it and I post it here as well just for people to see as well:

As corona slicer getting more and more popular among the corona users community,
The need for the coronaslicer support in Vantage is getting bigger.
The corona slicer is a fast and wonderful solution and many times replacing the old Boolean prompts.
And now, as the Vantage is getting supported by corona - which is a game changer -
Those two features need to be integrated together. It's like "half work" is done if the corona slicer is not supported.
Yes , I know that you have a slicer in Vantage - but the functionality is not the same while applying it in 3dsmax and it doubles the work if I need to start make it again in Vantage...

Please Please consider it !!!
Thanks,
Shaked.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Abdullah_Alallah on 2025-08-22, 16:15:31
i just saw the list of all the new things coming up on to 14 and god you guys are amazing.
 i just had to reset my default settings to get it to work tho
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-22, 16:25:42
i just saw the list of all the new things coming up on to 14 and god you guys are amazing.

but i get an insant crash, that i cant even run max

Crash at max startup or opening a scene? Minidump and scene are always good to attach.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-22, 16:27:44
i just had to reset my default settings to get it to work tho

May be related to Corona system settings parsing, there are a lot of changes which relate to them.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: romullus on 2025-08-22, 16:31:49
I can't find new Fabric material...
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Abdullah_Alallah on 2025-08-22, 16:38:23
i just had to reset my default settings to get it to work tho

May be related to Corona system settings parsing, there are a lot of changes which relate to them.

Yes I would assume that, as I ended up resetting and things seem to be working fine, i would note that i use VFB2 and the fact that it autoresizes the render when changing the window size goes a long way.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: TomG on 2025-08-22, 17:47:32
I can't find new Fabric material...

Known and will be fixed.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-22, 18:45:46
I can't find new Fabric material...

Update is live. Please simply redownload either from MyChaos or through GDrive link.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Abdullah_Alallah on 2025-08-22, 20:24:45
i just had to reset my default settings to get it to work tho

May be related to Corona system settings parsing, there are a lot of changes which relate to them.

Yes I would assume that, as I ended up resetting and things seem to be working fine, i would note that i use VFB2 and the fact that it autoresizes the render when changing the window size goes a long way.

turns out i still keep getting a crash, every couple of times i would get an insta crash right after the splash screen. is there a way to report it or help in fixing it?
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-22, 21:21:27
Quote
turns out i still keep getting a crash, every couple of times i would get an insta crash right after the splash screen. is there a way to report it or help in fixing it?

Minidump will be the first step to go with.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: CharlyRT on 2025-08-22, 21:42:06
i just had to reset my default settings to get it to work tho

May be related to Corona system settings parsing, there are a lot of changes which relate to them.

Yes I would assume that, as I ended up resetting and things seem to be working fine, i would note that i use VFB2 and the fact that it autoresizes the render when changing the window size goes a long way.

turns out i still keep getting a crash, every couple of times i would get an insta crash right after the splash screen. is there a way to report it or help in fixing it?

I too have a lot of crashes without reason, using max 2024.2.3
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: TomG on 2025-08-22, 22:11:54
Same thing CharlyRT, a minidump is necessary for us to start digging in to what is happening for you. Thanks!
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: CharlyRT on 2025-08-23, 01:58:10
Same thing CharlyRT, a minidump is necessary for us to start digging in to what is happening for you. Thanks!
Yeah, I know the process just wanted to let it clear that hes not the only one, sometimes I have read for that  confirmation too
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: shortcirkuit on 2025-08-23, 06:55:16
so far so good great job.

A couple of small things.
The new fabric material doesnt display in my viewport.
The spinners - they act a little weird and sometimes dont work.
also the uvw real world and tripplanar options come and go - in this case, they are not here.

Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: marchik on 2025-08-23, 14:50:25
I tested it a bit, so far it seems like all the new features work fine, the spinners in CoronaPhysicalMtl are a bit twitchy, but when I turn on interactive rendering everything becomes fine.

I'm very glad that you took up my old request with a separate shader for fabric.
A couple of comments/suggestions:
If you will add this, it would turn the game with fabrics in Archvis upside down.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Abdullah_Alallah on 2025-08-23, 18:08:44
Following up to my crash report, ive updated to max 2025, and reset all of my scripts and started adding them one by one. and it turns out its te Corona Render element Script which i have used for god knows how long yet when i added it into max with Corona 14 installed = Instant crash

on max 2024 and 2025. idk which exact line of code is casuing the crash but here's the link to the script used in case it would interact in the future with any future scripts "https://www.scriptspot.com/3ds-max/scripts/corona-render-elements-manager"
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: CharlyRT on 2025-08-23, 20:39:26
Could we have a dedicated button for Flip image in VFB? theres a loooot of wasted space, whats the reason to use the small arrow to activate it? even the shortcut its not practical.
This is why people say that VFB 2 has a poorly design.
Could we have a way to edit shortcuts?
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-23, 20:56:18
Could we have a dedicated button for Flip image in VFB? theres a loooot of wasted space, whats the reason to use the small arrow to activate it? even the shortcut its not practical.
This is why people say that VFB 2 has a poorly design.
Could we have a way to edit shortcuts?

Dedicated button for flip sounds too much. Shortcut is perfectly convenient honestly.
Editing of shortcuts is whole another story/request though.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-23, 21:09:52
I tested it a bit, so far it seems like all the new features work fine, the spinners in CoronaPhysicalMtl are a bit twitchy, but when I turn on interactive rendering everything becomes fine.

I'm very glad that you took up my old request with a separate shader for fabric.
A couple of comments/suggestions:
  • Add a separate bump slot that would be superimposed on top of the parallax, with support for normal maps of course, after all, working with fabrics is unthinkable without additional maps for folds & wrinkles.
  • And most importantly, the shader does not completely cover our need to create velour and velvet with a small pile, sheen performs a similar function, but in a very distant approximation. It would be great to create an additional section in the same material that would imitate small hairs and their brdf using the same parallax, for example.

    And give us 4 parameters
    • Length
    • Width. Together with the general tiling this would allow for the overall regulation of the pile density
    • Angle relative to the surface (mappable using a black and white map). 0.0 would correspond to the pile direction coinciding with the surface normal, 1.0 - crushed pile, 90 degrees to the surface normal. With this parameter we could regulate how much the surface will shine.
    • Pile rotation along its own Z-axis (mappable parameter by analogy with Anisotropy rotation in a regular CoronaPhysicalMtl). The original rotation value can be set using a object's UVs as in the case of anisotropy.
If you will add this, it would turn the game with fabrics in Archvis upside down.

I get the idea(tion) about fabric material; current fabric material is conceptually a bit different, more importantly - a base to grow further on. It covers the very core of fabrics, actual weave patterns (above, below) comprised of threads (made of plies, made of fibers). We have our own ideas what can be improved, but we don't want to make it half-scatter-half-pattern like thing. Current (other) tools give a very good room for added detail and functionality (e.g. scatter for random microfibers, pattern modifier for custom geo-modules etc.). One of the main points of this fabric mtl was to make the special kind of reflectivity and "anisotropy" of fabrics which is otherwise not achievable with other shaders. It is not so simple to control, but hopefully some good examples will be available soon.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: romullus on 2025-08-23, 22:25:31
Please add more common fabric presets. Trying to figure this new material on one's own is no joke. And i really would appreciate "don't show again" checkbox in warning window that pops out each time when you change a preset - this thing is so damn annoying.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: marchik on 2025-08-23, 22:31:16
I get the idea(tion) about fabric material; current fabric material is conceptually a bit different, more importantly - a base to grow further on. It covers the very core of fabrics, actual weave patterns (above, below) comprised of threads (made of plies, made of fibers). We have our own ideas what can be improved, but we don't want to make it half-scatter-half-pattern like thing. Current (other) tools give a very good room for added detail and functionality (e.g. scatter for random microfibers, pattern modifier for custom geo-modules etc.). One of the main points of this fabric mtl was to make the special kind of reflectivity and "anisotropy" of fabrics which is otherwise not achievable with other shaders. It is not so simple to control, but hopefully some good examples will be available soon.

I fully understand why this shader was made and it will definitely make my work easier.I have gone through all the existing properties one by one and they are all logical and easy to work with

 I work with fabrics all the time and yes, a separate shader that allows me to convey complex visual properties of fabrics is exactly what I wanted. I'm just writing down my wishes.

In the current implementation, it basically repeats exactly what we can achieve with textures and geopatterns (mostly). Of the entire list of fabrics, only fabrics with dense fine pile on top of the weaved base remain something that is very difficult to achieve using physically correct methods. Scatters and ornatrix are difficult to manage (especially mapping the rotation of fibers) and they consume a lot of resources, so I'm asking for things that could also make our work easier.

And I am not writing about scatter and individual fibers at all, I am just mentioning the dense pile of which such fabrics consist and it is they that determine their overall appearance, so I believe that this can be realized with a shader and physical simplifications."Velvet properties" are something that is rarely found in the shader of any rendering engine and that will always cause difficulties in creating for 3D artists, and you could close this need. I am ready to provide full assistance in this. Thanks!
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: dfcorona on 2025-08-24, 19:54:54
A couple of Issues with Gaussian splats.

1) I cannot find a way to exclude it from tone mapping. It would be great to be able to have a checkbox for this because it's impossible to get a true render of the gaussian splat while adding objects and lighting to a scene.

2) It would be great if we had an option to make the gaussian splat use a Shadow catcher material so we can use it to catch objects shadows or as a mask for compositing onto the original video.

Great job on everything so far guys! This is going to be a great update.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-24, 21:58:38
A couple of Issues with Gaussian splats.

1) I cannot find a way to exclude it from tone mapping. It would be great to be able to have a checkbox for this because it's impossible to get a true render of the gaussian splat while adding objects and lighting to a scene.

2) It would be great if we had an option to make the gaussian splat use a Shadow catcher material so we can use it to catch objects shadows or as a mask for compositing onto the original video.

Great job on everything so far guys! This is going to be a great update.

Exclude GS from tone mapping is already in the list of improvements. Not sure about assigning a material to it, it is fundamentally a different thing. I guess you have used affect shadowcatcher option, and it is not what you are looking for.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: maru on 2025-08-25, 16:28:05
so far so good great job.

A couple of small things.
The new fabric material doesnt display in my viewport.
The spinners - they act a little weird and sometimes dont work.
also the uvw real world and tripplanar options come and go - in this case, they are not here.

This is a Scanned Material. :)
You can find the new Fabric material in the material editor as "Corona Fabric Mtl".
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: dfcorona on 2025-08-25, 17:59:41
A couple of Issues with Gaussian splats.

1) I cannot find a way to exclude it from tone mapping. It would be great to be able to have a checkbox for this because it's impossible to get a true render of the gaussian splat while adding objects and lighting to a scene.

2) It would be great if we had an option to make the gaussian splat use a Shadow catcher material so we can use it to catch objects shadows or as a mask for compositing onto the original video.

Great job on everything so far guys! This is going to be a great update.


Exclude GS from tone mapping is already in the list of improvements. Not sure about assigning a material to it, it is fundamentally a different thing. I guess you have used affect shadowcatcher option, and it is not what you are looking for.
That is great to hear Aram. Affect Shadowcatcher doesn't allow you to cast shadows onto the Splat. So say you put a new building into a splat scene, there is no way to drop the shadow of that building onto the splat.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-25, 18:01:52
That is great to hear Aram. Affect Shadowcatcher doesn't allow you to cast shadows onto the Splat. So say you put a new building into a splat scene, there is no way to drop the shadow of that building onto the splat.
[/quote]

Yes, that is another point of possible improvement.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: dfcorona on 2025-08-25, 18:05:02
Another issue I would like to report which seems like a bug that has been in the past versions also. When you use IPR with regions, the stop IPR button is greyed out so you cannot put a stop to the IPR. But If you move or scale an edge of the region the stop button then appears so you can then click it.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-25, 18:13:15
Another issue I would like to report which seems like a bug that has been in the past versions also. When you use IPR with regions, the stop IPR button is greyed out so you cannot put a stop to the IPR. But If you move or scale an edge of the region the stop button then appears so you can then click it.

Please let's keep the discussion in this thread only related to V14 previews.
What you are mentioning is because IR reaches the pass limit and stop rendering, unless you update scene/region/material etc.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: dfcorona on 2025-08-25, 18:32:44
Another issue I would like to report which seems like a bug that has been in the past versions also. When you use IPR with regions, the stop IPR button is greyed out so you cannot put a stop to the IPR. But If you move or scale an edge of the region the stop button then appears so you can then click it.

Please let's keep the discussion in this thread only related to V14 previews.
What you are mentioning is because IR reaches the pass limit and stop rendering, unless you update scene/region/material etc.
Under stood, but this has to do with V14 also. A lot of times you want to stop the IPR cause you want to make a bunch of changes to materials and don't want it to refresh constantly. But your only option is to close or move region to hit stop button. Many times you still want VFB open for reference. The IPR reaching it limit and stopping isn't actually stopping IPR, cause any new move refreshes IPR. I'll make a topic somewhere else for this, sorry I didn't think I was going outside the preview builds since this was happening in V14 also.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: romullus on 2025-08-25, 19:19:35
Under stood, but this has to do with V14 also. A lot of times you want to stop the IPR cause you want to make a bunch of changes to materials and don't want it to refresh constantly. But your only option is to close or move region to hit stop button. Many times you still want VFB open for reference. The IPR reaching it limit and stopping isn't actually stopping IPR, cause any new move refreshes IPR. I'll make a topic somewhere else for this, sorry I didn't think I was going outside the preview builds since this was happening in V14 also.

This has nothing to do with preview builds specifically. That behaviour is there from the very beginning, if you want it to be changed, the best place to ask/discuss it is Corona ideas portal https://chaoscorona.ideas.aha.io/ Be sure to do a quick search before submitting your request - i remember there were several discussions about option to explicitly stop IR after it reached stopping condition - someone may already posted request about that on the portal.

edit: sure enough, this is already requested, you may want to cast your vote here: https://chaoscorona.ideas.aha.io/ideas/CMAX-I-71
Title: 3ds Max freezes when adjusting Lightmix values via mouse spin
Post by: luis.lab on 2025-08-26, 12:18:00
Hi, I’ve been testing the new daily build and noticed an issue: every time I adjust Lightmix values by spinning them with the mouse, 3ds Max freezes completely. If I type the values in manually with the keyboard everything works fine, but the mouse interaction always causes a freeze. Unfortunately, no error message appears, so I can’t provide a minidump. This happens consistently on my system.
Hopefully the team can look into it, as the new features are otherwise working great.

3dsMax 2025, Corona last daily
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: TomG on 2025-08-26, 12:37:32
Do you mean freezes temporarily for a time, or freezes permanently? If the latter, then you can force a minidump, see "Crashes, Errors, Freezes - Collecting the Minidump File (When the Autodesk Error Report Window is not Available)" in https://support.chaos.com/hc/en-us/articles/4649117083409-How-to-report-issues-3ds-Max
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: luis.lab on 2025-08-26, 12:53:23
Hi Tom,
Freezes permanently.
I will check how to force a minidump and will send it when I get a chance.
Thank you
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: TomG on 2025-08-26, 14:16:45
TY for the extra info, and for looking into forcing a minidump - much appreciated :)
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-26, 14:27:09
Hi Tom,
Freezes permanently.
I will check how to force a minidump and will send it when I get a chance.
Thank you

Does it happen only with the daily build? Does it happen in any scene. I cannot reproduce it with DB on a fresh new scene with lights and lightmix.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: maru on 2025-08-26, 16:01:27
LightMix freeze - reproduced and reported as (Report ID=CMAX-1853).
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: luis.lab on 2025-08-27, 03:25:17
Hi
Yes, happens in any scene.
I have already sent the minidump to the ticket support section, as Tom asked.
Thank you.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Abdullah_Alallah on 2025-08-27, 07:34:35
there's an issue that im facing that im not sure is related to the latest Corona or max 25.3, ever since i updated my max to deal with the instant crash it would seem that the assign material to selection button the slate matereial editor is useless. it simply doesn't work as i would have to right click on the material and select assign material to selection through the right click menu. Using the 22/8 Build and max 2025.3


UPDATE: Found a way for it to work in case anyone is facing the same issue, you just have to uncheck the mouse pointer button (in yellow) then assign material button will work normally
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: maru on 2025-08-27, 09:16:36
It's commonly reported by users and it seems to be a 3ds Max issue unrelated to Corona. The workaround I am using is selecting a material and pressing the A key to assign it.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: romullus on 2025-08-27, 09:31:30
The lack of QA at Autodesk is mind blowing. 2026.3 is probably the worst update ever, zero new features, bunch of new bugs.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: CharlyRT on 2025-08-27, 16:11:53
there's an issue that im facing that im not sure is related to the latest Corona or max 25.3, ever since i updated my max to deal with the instant crash it would seem that the assign material to selection button the slate matereial editor is useless. it simply doesn't work as i would have to right click on the material and select assign material to selection through the right click menu. Using the 22/8 Build and max 2025.3


UPDATE: Found a way for it to work in case anyone is facing the same issue, you just have to uncheck the mouse pointer button (in yellow) then assign material button will work normally

It has been solved in max 26, but I recommend to use 26.1, in the end I got used to "A" button shortcut
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: dfcorona on 2025-08-28, 04:16:49
Hi, I think there might be an issue with Gaussian Splats.  I attached two render comparing Vray GS vs Corona GS.  Vray's of course looks correct, not sure what is happening with Corona.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-28, 08:14:20
Hi, I think there might be an issue with Gaussian Splats.  I attached two render comparing Vray GS vs Corona GS.  Vray's of course looks correct, not sure what is happening with Corona.

Hi,

We have already done GS color correction improvements internally, which should fix your issue too. Hopefully next daily will have it.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: v.p.vlasenko on 2025-08-28, 13:23:08
"Significantly improved parsing speed, especially on CPUs with large number of threads. Geometry stage now stays consistent between renders"

Haven't noticed any improvement. Just tested 13 h1 and daily. Scene parsing in 13h1 - 1m10s, daily - 1m11s. Same.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-28, 13:29:56
"Significantly improved parsing speed, especially on CPUs with large number of threads. Geometry stage now stays consistent between renders"

Haven't noticed any improvement. Just tested 13 h1 and daily. Scene parsing in 13h1 - 1m10s, daily - 1m11s. Same.

It is not supposed to show up on any scene. CPU model is important too, say a 86 core EPYC is affected, an 8/16 core Ryzen will not see much difference. Try sequence rendering with large geometry computation and you will see the difference.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: v.p.vlasenko on 2025-08-28, 13:41:02
Tried on 2 scenes, with a lot of instances (forest pack and tyflow). One 3min, second 1:10 (this one also have hair). Should I see some difference with 18/36?

Didn't tried sequence though.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-28, 13:49:49
One 3min, second 1:10

You mean first render took 03:00, second render took 01:10?
Geometry calculation is part of parsing, this is where the most of the difference should come. The other stages may be the same.

There should be clear improvement in geometry computation (and effectively total parsing time) - it used to increase slightly with each re-render/sequence. Significant difference should be seen with roughly 10-15 consecutive frames. V14 DB should be consistent in this regard.

Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: v.p.vlasenko on 2025-08-28, 15:44:04
Nope, I mean two different scenes.
First render 180s for the first and 70s for the second scene.
+/- same for 13h1 and latest daily, so I didn't see any improvement here, at least for those 2 scenes.
Title: Re: Chaos Corona 13 for 3ds Max - Daily Builds Discussion
Post by: _fosafosa on 2025-08-28, 16:04:56
Hey guys, looks like Vantage link is working properly!

Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: aaouviz on 2025-08-28, 20:56:58
Something odd is happening when using CIE;

- Render a scene (with latest daily)
- Open the *.cxr file
- Load a *.conf file for LightMix (the conf file was saved from a Corona 13 version of CIE)
- Save the image
- Image lighting is saved wrong (in my case, too bright).

If I copy the image from CIE and paste it into photoshop, the image/lighting looks correct.

Not sure if this is replicable or not, but figured I should share my experience today after installing the daily.

P.S. Amazing work with the new features thus far. Absolutely thrilled to have splats in Corona (hoping the color fix is coming soon).

Cheers!
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: maru on 2025-08-29, 13:45:37
The simpler reproduction steps are:
- save anything in .cxr format in any version of Corona
- open with v14 CIE
- save with v14 CIE

:)

This is now reported as (Report ID=CMAX-1864).
Thank you!
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: mferster on 2025-08-29, 23:14:30
Did some tests with the Gaussian splat object.

It feels like something is off with how the colours are being represented when brought in compared to when the same splat is viewed in an online viewer like poly.cam.

It kinda feels like the gamma is off perhaps. There is a distinct lack of contrast and some green and red splats show up in what should otherwise be gray.

I am using Gamma 2.2 colour management and default settings in the VFB. the Color space options in the  splat object modifier panel don't seem to make any meaningful changes.

Edit: WHOOPS, saw that there was another post reporting the same issue. Ahwell I will keep this up showing its not an isolated problem.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-08-29, 23:34:13
Internally, not only the color interpretation is better/fixed, but there is better color correction control for splats. Stay tuned for upcoming previews (daily builds).
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Jens on 2025-09-01, 13:15:31
Not sure if this only is Corona 14 related:

When using the "Use Camera scene environment" override on corona camera, the Shadowing by clouds function on the corona sun does not work as intended. It keeps using the main scene environment corona sky. Not the one I've put in the override. The lighting seems to change and sky patterns also change when using override corona sky, its just the shadowing from clouds on the sun, that's not working.

Corona 14 22august version. 3ds max 2024.2.1
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-01, 13:28:02
Not sure if this only is Corona 14 related:

When using the "Use Camera scene environment" override on corona camera, the Shadowing by clouds function on the corona sun does not work as intended. It keeps using the main scene environment corona sky. Not the one I've put in the override. The lighting seems to change and sky patterns also change when using override corona sky, its just the shadowing from clouds on the sun, that's not working.

Corona 14 22august version. 3ds max 2024.2.1

Can you please send over a simple scene where this can be reproduced? I will make sure it is reported to be fixed.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Jens on 2025-09-02, 11:20:59
its' basically that the corona sun is linked to 1 specific corona sky that messes it up. It's apparantly not linking the override sky to the active sun. So shadows from clouds will just stay the same no matter what setting you chose on your override corona sky. See screenshot where I've disabled clouds in the override sky, but we still get shadows on the ground from the old sky (the one still linked to the sun).

Attached the very simple scene for you here.

Also, we still have the issues of enabling clouds will mess up the horizon when "Volume Effect" on the sky is enabled. Basically makes it useless for aerial views, where this vol effect is really needed. It's been reported for many years :/
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-02, 11:47:56
Thanks.

The cloud shadows from camera override map which has no clouds enabled is reported now.
The volume effect is already being tracked.

(Report ID=CMAX-1867)
(Report ID=CMAX-1232)
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Jens on 2025-09-02, 12:10:09
Thanks.

The cloud shadows from camera override map which has no clouds enabled is reported now.
The volume effect is already being tracked.

(Report ID=CMAX-1867)
(Report ID=CMAX-1232)

Fantastic, thank you Aram :)
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: _fosafosa on 2025-09-02, 13:00:31
I cant prove but i am sure scenes with volume material are very unstable (frequent 3dsmax crashes)
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-02, 13:25:34
I cant prove but i am sure scenes with volume material are very unstable (frequent 3dsmax crashes)

I can't promise, but attaching minidumps makes reports better.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Chatchawind on 2025-09-02, 14:05:38
Report Corona 13 Hotfix 1 : I just updated today and then tested with some project while using IR rendering I got back the same problem with sudden memory leaking. (Corona 12 Update 1) https://forum.corona-renderer.com/index.php?topic=44083.0 (https://forum.corona-renderer.com/index.php?topic=44083.0)
It never happens when I use Corona 12 Update 2 and Corona 13.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: _fosafosa on 2025-09-02, 14:13:38
I cant prove but i am sure scenes with volume material are very unstable (frequent 3dsmax crashes)

I can't promise, but attaching minidumps makes reports better.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-02, 14:14:33
Report Corona 13 Hotfix 1 : I just updated today and then tested with some project while using IR rendering I got back the same problem with sudden memory leaking. (Corona 12 Update 1) https://forum.corona-renderer.com/index.php?topic=44083.0 (https://forum.corona-renderer.com/index.php?topic=44083.0)
It never happens when I use Corona 12 Update 2 and Corona 13.

Please note, this is v14 previews thread.

You can open a new thread in 3ds Max Bug reporting/I need help groups
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-02, 15:21:07
I cant prove but i am sure scenes with volume material are very unstable (frequent 3dsmax crashes)

There seems to be some proof. We will investigate it. Thanks.

(Report ID=CMAX-1868)
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Sandertype on 2025-09-02, 17:54:34
Could we have a dedicated button for Flip image in VFB? theres a loooot of wasted space, whats the reason to use the small arrow to activate it? even the shortcut its not practical.

+1
A checkbox for Flip doesn't make sense to me. A button makes more sense. I understand the need for minimalism in Corona but anyone using 3DS Max is very much used to a 1000s-of-buttons UI anyway.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: shortcirkuit on 2025-09-03, 01:22:53
the shortcut is perfectly fine for me.

Could we have a dedicated button for Flip image in VFB? theres a loooot of wasted space, whats the reason to use the small arrow to activate it? even the shortcut its not practical.

+1
A checkbox for Flip doesn't make sense to me. A button makes more sense. I understand the need for minimalism in Corona but anyone using 3DS Max is very much used to a 1000s-of-buttons UI anyway.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: shortcirkuit on 2025-09-04, 04:06:18
latest daily, max 2026.  Crashes everytime i use the spinners in the interactive mix.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-04, 07:47:32
latest daily, max 2026.  Crashes everytime i use the spinners in the interactive mix.

This is reported and already fixed internally. Next preview should have it.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-05, 14:04:16
I cant prove but i am sure scenes with volume material are very unstable (frequent 3dsmax crashes)

I can't promise, but attaching minidumps makes reports better.

Hi,

We will need the scene to reproduce and fix the issue properly.
Please send it over (or a simplified version where the crash can be reproduced) as soon as you can.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: _fosafosa on 2025-09-05, 18:52:25
Could you send me link ?
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-05, 19:08:12
Wetransfer and other filesharing services are fine. You upload and share the link.
You can submit it with a ticket as well - make sure to share the ticket number here to track it better.
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: _fosafosa on 2025-09-08, 18:13:55
#413824
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-08, 23:48:01
#413824

Thanks, the scene with reproduction steps has been attached to the task.
It is when volume material is plugged as global volume material, right? Or there are other steps which lead to crash in your case?
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: _fosafosa on 2025-09-10, 16:31:59
Recorded video and sent in ticket.

As you will see scene is just unstable, drops when tinkering with box with volumetric
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: aaouviz on 2025-09-11, 11:41:25
With CIE every time I try to do a 'save all' to jpeg I get an instant crash.

Known problem? I can provide crash report if this is new?

Edit:
CIE seems to be all types of messed up? Is this all known? See example below of how a lightmix pass looks in CIE vs how it is saved as jpg. What's going on?
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: Aram Avetisyan on 2025-09-11, 12:29:11
With CIE every time I try to do a 'save all' to jpeg I get an instant crash.

Known problem? I can provide crash report if this is new?

Edit:
CIE seems to be all types of messed up? Is this all known? See example below of how a lightmix pass looks in CIE vs how it is saved as jpg. What's going on?

Hi,

These are known and already reported. I wonder if you had any issue specifically with the UI/UX.

(Report ID=CMAX-1878)
(Report ID=CMAX-1877)
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: _fosafosa on 2025-09-12, 09:35:54
Possible? Bug?
Corona Daily + Vantage 3 beta -> Forest Packs and Raiclones not working in Live Link
Title: Re: Chaos Corona 14 for 3ds Max - Previews (Daily Builds) Discussion
Post by: maru on 2025-09-24, 17:40:57
Possible? Bug?
Corona Daily + Vantage 3 beta -> Forest Packs and Raiclones not working in Live Link

Thanks, this is now reproduced and logged as (Report ID=CMAX-1894).