Still no OPEN button to open a CXR in the VFB?

[lupaz]

I believe there's a bug:

https://youtu.be/pBMelae7118

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.

[Aram Avetisyan]

I believe there's a bug:

https://youtu.be/pBMelae7118

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).

[lupaz]

I believe there's a bug:

https://youtu.be/pBMelae7118

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.

[Aram Avetisyan]

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.

[lupaz]

but please tell me if what you are describing was ever possible in Corona, in some version.

No. It was never possible in Corona. It should be by now.

It may become a feature request in the end.

yes please.

[maru]

This should actually work as long as you have the “Clear VFB between renders” option disabled in Render Setup > System ...but it doesn't.
I have logged this for our developers as (Report ID=CMAX-1631).

[CharlyRT]

Thanks, I was looking out for this too.
Everytime I wanted to re render an area with region everything goes black.
Hope this could be integrated soon.

[CharlyRT]

Also another thing that Vray VFB does is load any kind of Images directly to it and save it in history.
I use it sometimes when a client wants another change after a time and I dont have the VRIMG.
Simply I just load the .jpg image to vfb, where I could have an idea where to draw the render region and render again.
If I want to preserve the whole image, I save it in history, reload and render the desired area without doing post.

Having this in Corona would be very useful too.