Installation: manual setting of mitsuba path is required

I need to manually specify the path of the mitsuba package in ~/.config/blender/3.3/scripts/addons/mitsuba-blender/__init__.py so that the addon can work. Here is the code I add in function init_mitsuba:

    import sys
    sys.path.append("/home/<someone>/.local/lib/python3.10/site-packages")

Although the mitsuba package is installed in the blender python env., it can not be imported in the console in blender but can be imported in a new terminate.

Steps to reproduce the behavior:

Install the addon according to the instructions.
“could not load mitsuba package” will show in the blender dialog.
ctrl+alt+T, type cd blender/3.3/python/bin and python3.10
Type import mitsuba, this works.
Open blender, click scripts layout
Type import mitsuba, this doesn’t work and raises import error (could not find module mitsuba)

OS: ubuntu20.04
Blender Version: 3.3
Add-on Version: latest

Issue Analytics

State:
Created a year ago
Comments:5

Top GitHub Comments

1reaction

cdsousacommented, Dec 1, 2022

This is the cause: https://developer.blender.org/T76993

0reactions

GCChen97commented, Oct 15, 2022

Hi,

No, I didn’t compile blender from source. In fact, I’ve tried either installing blender by snap or .deb. Both ways required manually setting of mitsuba-blender path.

Besides, I also need to set env. variable PYTHONPATH=/<path to>/mitsuba3/build/python for python of anaconda to correctly find the mitsuba compiled from source. And because of the env. variable, I also need to set "PYTHONPATH=‘’ " before launching blender so that the addon will not wrongly import this compiled-from-source mitsuba.

Note that the mitsuba compiled from source is used for rendering and the one used by the addon was installed when installing the addon and was used only for viewing xml scene file.

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