Vray Render Elements and Nuke

#1

I just posted a short article about getting your vray render elements into Nuke properly.

www.ruffstuffcg.com

Fred

#2

Thank you very much for this quick tutorial…
I have actually stumbled into it 2 hours ago while looking for this argument, and then again now in this thread.
I have one question though - I have once seen a tutorial (which I can not find anymore) that shows how to import an vrimg converted EXR file to NUKE as a single file, but letting nuke interpret each channel as a different node, resulting in a multiple nodes on the workspace, but only a single file on import.
I am not sure I have described the issue well, but what I am seeking to do is import only ONE exr, and then separating all the channels into single nodes on the workspace, for later compositing them with corrections.
If there is a way of doing it, or if you know the tutorial I am referring to, please let me know.
And thanks again for your tutorial - it is excellently short and to the point ! (and so are all the other great stuff on your website - A must bookmark! you have earned a subscriber :slight_smile: )

#3

You can make an EXR with many channels iand bring it right into Nuke to work with. Im not sure about loading a .vrimg into Nuke. (I never tried, but I wouldn’t expect it to load.)

3dsmax2011 can save extra channels to an EXR. Its fairly easy to set up.

Fred

#4

thanks for your reply…

I do know how to make a multi-channel EXR from 3dMax, and also from Vray.
What I do not know (and realize that I have explained in a bad way in my post) is how to seperate those channels into seperate nodes on nuke, so that in my workspace I will have ONE seperate node visually visible for each channel from the EXR.
Is there a script that do that ? or some command ?

#5

Shuffle node should do the trick.

#6

you can use the shuffle node for that

#7

As mentioned you can use shuffle, but there is no point in doing this in Nuke since most of it’s tools are multichannel aware. Shuffling everything to RGBA adds a lot of memory/cpu overhead.

#8

Personally I’d like to shuffle every passes into one EXR files and work with it through my workflow, because it would prevent my script to be seen very clumsy and controlling the passes are really easier than traditional methods. For using EXR channels, after shuffling, you need to change every node’s mask to the specific channel (like Depth, Occ, Beauty) you wanna be changed. to me it works perfectly. :slight_smile:

#9

Thanks all…
I am a neebie in NUKE, although not in 3D. Before I used AE for composition but as all know, it is clumsy and limited…

@pingking, @thrillhouse196
Thanks for the replies.I have already figured out the shuffle nodes. It works great for me, although I wished there was some automated script or function to just take the EXR and seperate all the channels in an automated way … (something like this i think exists in fusion, where on opening an EXR you just say which channel to use in which mode)

@beaker
I understand what you mean, but I guess the only point in doing that is to have a better VISUAL view of your workflow. I guess that´s only good for neewbies, but for me it makes the process of compositing (and learning nuke) a lot more easier to control…

@Pasargad
Could you please explain better what you described about the node masks ?

#10

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