Saving Unclamped .vrimg Files

V-Ray V-Ray for 3ds Max General
1

Hi,

When I save as .vrimg through Backburner the image is always clamped unless I save using ‘render to V-Ray raw image file’ from the V-Ray Frame Buffer, see below:

This means I can’t use Max’s batch renderer to send multiple jobs at once. Is this just a limitation of Max or V-Ray or am I doing something wrong?

Thanks,

vrimg.jpg
vrimg.jpg464×132 12.2 KB

2

Will look into it, but if you are saving from the 3ds Max regular render output, it might better to use OpenEXR rather than .vrimg - I didn’t even know that it works there.

Best regards,
Vlado

3

Yes it works fine from the renderer common tab, apart from I can’t get it to save unclamped.

I’ve been doing exactly as you suggested, saving to .exr then opening in the Max frame buffer and re-saving as .vrimg.

I don’t know whether this has been requested before but would it be possible to allow the VFB to open other file formats such as .exr?

Thanks,

4

Is there a reason you need a .vrimg in the first place? Just so you can open it in the frame buffer?

I don’t know whether this has been requested before but would it be possible to allow the VFB to open other file formats such as .exr?Yes, and it’s already implemented in the 3.0 nightly builds (not only for .exr but for other formats too).

Best regards,
Vlado

5

Yes, I like the implementation of the colour correction curves better than any other software I own. I don’t know of any other applications that allow the curves to manipulated past brightness value 1.0.

Well that’s great. In that case I can probably wait, we’re upgrading to 3.0 very soon :). I was more concerned that I had something turned on (or off) that was causing my .vrimg files to be clamped when everything else was saving unclamped.

6

We probably didn’t implement a flag for specifying that .vrimg files are always HDR. You can force V-Ray to do that using the following MaxScript snippet:renderers.current.output_force32bit_3dsmax_vfb=true

As I said, will make a note to do that automatically.

Best regards,
Vlado

7

Thanks Vlado!

I did search the MaxScript help for ‘clamped’ and ‘unclamped’ but I didn’t find that.

Keep up the good work, I’m looking forward to using V-Ray 3.0.

8

Yes. This.

I have never actually tried any other software that handles curves CC as good as the vray FB.

9

If I could resize the ‘color correction’ window or it was 1.5 -2.0 x bigger it would be perfect.

I have a license for Adobe Creative Cloud that I haven’t installed yet but my CS4 is useless in this respect.

10

Yes, this has come up already; not sure yet how that might work though without resizing the entire CC window. Btw do you have other suggestions for the curves?

Best regards,
Vlado

11

I’m maybe not the best person to ask as I don’t use the curves in the VFB very often. However the reasons why I don’t might help.

If I’m honest it doesn’t really fit in with my workflow. We send all our jobs to our render farm. So the only way to use the VFB for image editing is to load the .vrimg files back in and resave. As far as I’m aware there is no way of using it to colour correct an animation. So my only suggestion would be to have the ability to load a saved .bcurve into V-Ray, maybe in the ‘Color Mapping’ section, then apply it to all subsequent jobs.

12

Alternatively, make the VFB tabbed, and let the CC stuff reside in its own tab, at least as an option. Might even be nice to add the render-log and history in there as tabs too :slight_smile:

Edit: On second thoughts, CC controls in a separate tab is useless, and even suggesting this makes me ashamed :roll:

Sorry for derailing the thread.

13

We will make those windows dockable I think this will be more useful.

Best regards,
Vlado