Topics

1

[Max] I need help! / Multimap: Control over UV channel on all connected textures

« on: 2025-01-03, 17:34:21 »

Is there currently a way to control the uv channel of all the textures connected to the multimap without going one by one on each bitmap node?

2

[Max] I need help! / Still no OPEN button to open a CXR in the VFB?

« on: 2024-12-07, 20:08:47 »

I thought I read somewhere that now the VFB had an open button to open a CXR.

I cannot find it.
Where is it?

Corona 12 update 1, max 2025.3

3

[Max] Bug Reporting / Corona 12 U1 - Stats different from VFB than saved CXR

« on: 2024-12-07, 20:06:58 »

When I render an image, the stats shown are different than when I save and retrieve the CXR.
Also, and this may have been the behaviour since forever, I don't know, but not all stats are saved. For example the noise % is missing in the CXR that I bring to the VFB.

Windows 11, Max 2025.3, Corona 12 Update 1

4

[Max] I need help! / Forest pack edge mode not working well with IR

« on: 2024-11-29, 15:07:32 »

Please, take a look at the video below. Looks like a bug.
It works with IR only if I switch to edge mode while on IR. But if I stop IR and start again it does not count the edge mode.
Please, let me know if I'm missing something.

https://youtu.be/RhHLXqXcevE


Windows 11. Corona 12 Update 1. Forest 9.1.6. Max 2025.3

5

[Max] Bug Reporting / Crash when turning Forest object on while IR

« on: 2024-11-22, 17:41:29 »

Hi Devs.

Please, download the file attached.
Open -> click on the IR window and turn the forest object ON.
In my PC it crashes every time.
Luckily it crashes only if I turn it on after I start IR. If I turn it on before, then there aren't crashes thereafter.

Windows 11, Corona 12 Update 1, 3DS Max 2025.1, Forest Pack Pro 9.0.8b

I just installed Corona 12 update 1. Please, let me know if this is a major bug so I revert to 11.

EDIT: I updated to Forest Pack Pro v9.1.5 and it still crashes.

Thank you.

6

[Max] General Discussion / When is Ondra coming back?

« on: 2024-07-07, 20:23:09 »

Is he coming back or not?

We would really want to see him back in the team.

Thank you.

7

[Max] I need help! / Proxies making file take forever to save

« on: 2024-05-09, 17:59:26 »

Corona 11.1
3DS Max 2023

With version 11 I've noticed that saving a file that contains a large number of proxies makes saving take a long time.
It happens with more than one file.
See video please.

Is there anything I can do other than go back to Corona 10?

8

[Max] Feature Requests / Be able to select Forest Pack objects when IR is running

« on: 2024-05-03, 20:01:43 »

Hi,

When IR is running, forest pack objects are not selectable. Is this something that can change?

3ds max 2023 - Corona 11.1

9

[Max] General Discussion / Caustics working really well!

« on: 2024-03-14, 16:01:49 »

I just wanted to say that. They are working really well.
So fast and very accurate.
Thanks!

Corona 11.1

10

[Max] Bug Reporting / Normal Map error message wrongly shows up

« on: 2024-03-13, 15:36:36 »

Hi.

A minor bug it seems.

Scene attached.
Video below.

On scene open and until I plug something else into the material, I get the message "===== Warning(22) =====
A normal map appears to be using input image with incorrect gamma. This can cause shading artifacts.
Map with the problem: "Map #2138799162"

As you can see on the video, the message is not related to the normal map itself, and it goes away after plugging in the only slot that was not plugged in.

https://youtu.be/mF7DcdZ-l7g

11

[Max] Feature Requests / CoronaDistance improvement - Use shape in Raycast mode

« on: 2024-03-09, 17:49:44 »

Hi,

I was looking for a way to use a spline to generate a mask. The spline would be the boundary for the shape and it would be projected onto the object I need a mask for.

Currently with CoronaDistance you'd need to use a volume AFAK, which can be messy and you'd need to set it to not-renderable and show as box if you don't want to have an annoying volume.
It would be interesting if there was a mode in CoronaDistance that allows to use a spline in projection mode without having to actually extrude the shape.

3DS Max's ShapeMap is slow to render with Corona.

Here's a discussion on Stack:
https://www.facebook.com/groups/stackthis/permalink/2125242507822234/

12

[Max] I need help! / Confusion about albedo in color and textures - Keeping consistency

« on: 2024-02-08, 19:19:18 »

Hi all,

If a texture has white in it, then I need to darken the whole texture. Right?
But why should I darken the texture that has white in it, together with all the other colors in the texture, and not all other textures in the scene, that don't have such bright colors,  at the same rate?

Here Chaos suggests:

Each material component is calculated as LEVEL * COLOR (with 255 = albedo 1). So to decrease too high albedo of a white material, you can either:

leave diffuse color at RGB255 and lower diffuse level to about 0,7
or

leave diffuse level at 1 and change color to about RGB180

https://support.chaos.com/hc/en-us/articles/4528323859601-What-is-Albedo

It doesn't specify between just single colors and textures with millions of colors.

Why doesn't the corona material have the level value at 0.7 by default?
Would that be a good strategy to keep realism in ALL materials with and without diffuse textures?

Here CGTricks is sharing a script to automatically control this, but I 'm not sure if I should blindly trust in it. So I wanted to ask the Corona team about all this, including whether the script is a vialble solution for homogeneous Albedo control.
https://forum.corona-renderer.com/index.php?topic=29928.msg172508#msg172508

Thank you!
Guido.

13

[Max] Feature Requests / Add your own materials to Corona library

« on: 2024-01-24, 16:33:21 »

Not sure if this was requested already.
In my case, without being able to save my own material to the library, I have no use for it.

Thank you.

14

[Max] Bug Reporting / Noise on bump NaN error window on viewport IR

« on: 2024-01-19, 17:05:09 »

Hi all.
I get a NaN error window.
Just open the scene, and start IR (the viewport IR).
If you don't get the error try opening the material editor or moving the perspective view.
I'm not getting the error on the VFB IR.

3ds max 2023 - Corona 11 hotfix 1

15

[Max] I need help! / Problem (bug?) with corona slice material

« on: 2024-01-17, 15:53:24 »

Hi.

There seems to be a strange behavior with corona slice material.
I'm adding a video below, and attaching the archive of the problematic scene.

Thank you.

3Ds max 2023 and Corona 11