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
EDIT and of course drag and drop works too, when that is more convenient.
So if I want to open a CXR and continue working with the image I still don’t have an option to load the image in the VFB directly?
Because when loaded in the history tab, if I want to use regions to render something specific, I still need to click on “resume” in the history tab, which will initiate the rendering and I have to click on cancel to get the image in the VFB. Is this correct?
Instead of clicking on resume you should click on edit icon.
Find a video attached.
Oh! ok.
Thanks!
I’m sorry, but one of the main reasons I need to just open a CXR is to draw a region and render it. The region button is not available when bringing an image the way you suggested.
Am I correct?
Hi, You should be able to do region rendering. Find the video attached below.
So the steps to bring an existing CXR rendering to the vfb and select the area I want to re-render is:
1- open it in the history tab
2- click on the pencil button to edit it in the vfb
3- click on render
4- very quickly select the region before other parts of the rendering get ruined with noise
The fact region render is unavailable when editing the file is a bug.
Alternative solution that I cannot understand why the devs don’t implement:
1- Click on open cxr from the vfb
2- select region
3- click render.
Why can’t that be done?
Open, together with save, are the most basic functions of any software since the 80s.
I don’t get it.
Hi, I understand your issue and I am currently discussing with our devs if this is a bug or is a expected behaviour due to any technical limitation.
Meanwhile, you can always log your feature request in our new platform here: https://chaoscorona.ideas.aha.io/
You will need to pick “Add a new idea” and describe your feature request in detail.
For more information, please see:
Corona for 3ds Max - [https://forum.corona-renderer.com/ The new way to let us know of feature requests - the Ideas Portal! ](https://forum.corona-renderer.com/ The new way to let us know of feature requests - the Ideas Portal! )
Hi,
I have logged this as a feature request in our system to be further reviewed by our devs.
(Report ID=CMAX-1449)
Hi Avi.
was this reviewed?
Waiting several seconds or up to a minute just to load a CXR file on the VFB is ridiculous.
This is being reviewed actively by our devs. We will let you once we include this in the build.
Hi,
Region drawing was enabled for load CXR since 02-28 DB, it is in Corona 12 Update 2 as well:
https://forum.corona-renderer.com/ Chaos Corona 13 for 3ds Max - Daily Builds Changelog #msg231652
VFB - Region draw is enabled when editing CXR, but only when edited CXR is of the same size as current/last rendering, which is necessary for resume render.
Ok. I was referring to a “open” option directly in the vfb.
Open/Load CXR has been there, plus a more convenient, including multiple, drag-and-drop also.
I believe there’s a bug:
To replicate it:
1- Open a scene, create somthing, render and save CXR.
2- the the VFB clear, open the CXR from history and edit it.
3- Draw a region and click render.
The image in the VFB goes away.
In any case, an “open” option under the little disk icon in the regular (not history) VFB would be better in my opinion.
EDIT: 3ds Max 2025.3, Windows 11 latest update AFAIK.
3 - instead of Render, draw a region and do Resume in rendering (play button for history item).
Hi Aram,
Resuming the rendering is not what I’m looking to do. If I do that the result I get is the mix of new pixels with older ones.
I want to re-render a region in an existing saved CXR file, while keeping that CXR image in the VFB.
In other words, I want to load a CXR file, draw a render region, and render from scratch for that region only without affecting the rest of the image.
Is that possible without having to use “resume file” and then click cancel and wait for the processing to finish before I can go ahead and render the region?
Thanks.
Edit: see attachment please.
I got your point.
Not sure how it works in VRay, but please tell me if what you are describing was ever possible in Corona, in some version.
It may become a feature request in the end.
No. It was never possible in Corona. It should be by now.
yes please.