How to Copy Houdini's Mantra to Nuke

[eunchae]

Hi.

I have an image rendered with Mantra in Houdini.

Please let me know if there is a way to do it with a python script.

Do you know how to copy only this mantra node to Nuke and that image can be loaded directly from Nuke?

 

Thank you.

[kiryha]

Do you want to have Mantra render engine in Nuke, or you just need to load rendered image (exr or whatever)?

To load image in Nuke you need to create Reader node and provide a path to this image:

import nuke
path_exr = "C:/temp/awesome_render.exr"
nuke.nodes.Read(name="My_EXR", file=path_exr)

 

[eunchae]

On 2021. 4. 9. at 1:38 AM, kiryha said:

Do you want to have Mantra render engine in Nuke, or you just need to load rendered image (exr or whatever)?

To load image in Nuke you need to create Reader node and provide a path to this image:

import nuke
path_exr = "C:/temp/awesome_render.exr"
nuke.nodes.Read(name="My_EXR", file=path_exr)

 

just need to load rendered image.

Should this python code apply to both Houdini and Nuke?

I want to have the image load when I copy the mantra to Houdini and paste it into Nuke.

Thank you.

[kiryha]

I don't know how to utilize such functionality via copy-paste... But as an option, you can build a Python script for Houdini which (with selected Mantra Node) will run Nuke and create a reader with exr:

import subprocess
import hou

NUKE = "C:/Nuke12.1v2/Nuke12.1.exe"
mantra = hou.selectedNodes()[0]
exr_path = mantra.parm('vm_picture').eval()


command = 'C:/temp/nuke_create.py'
subprocess.Popen([NUKE, '--nukex', command, exr_path])

and the content of nuke_create.py would be:

import sys
import nuke

exr_path = sys.argv[1]
nuke.nodes.Read(name="My_EXR", file=exr_path)

 

Edited April 12, 2021 by kiryha