pyblish/pyblish

An automation micro-framework for content

Marcus Ottosson

@mottosso

Neat, this post was trending on Hacker News a few days ago too :) We're famous!

Andre Anjos

@andre.anjos_gitlab

Hi all!
Is there anyone that successfully ran Pyblish QML with 3D Studio Max? Would it be possible with the current version, please?
I understand that Max uses Pyside2 instead of PyQt5, so not sure how to redirect the Qt modules, if possible?
Thanks in advance! :)

Marcus Ottosson

@mottosso

Should work just fine, Pyblsh QML doesn't use Qt from within 3ds, it uses its own exernal version

The only thing you might run into is issues with QML calling 3ds from a thread, have a look at how the other integration dealt with this.

https://github.com/pyblish/pyblish-qml/blob/master/pyblish_qml/host.py#L532

Typically it's a function provided by Maya/Houdini/etc to move another function to the main thread, I bet 3ds has something like it

Or, it's happy being called from a thread in which case you don't need it

Andre Anjos

@andre.anjos_gitlab

Hi @mottosso ! Thanks for that :)
I'm probably overthinking the process and will look into the setup more attentively :)
That makes sense I will have another look into it

Thanks again!

Marcus Ottosson

@mottosso

Yep, just run it like you would from Maya and it should be fine :)

Pyblish QML would run from any host so long as it can run Python, the host doesn't need Qt or bindings

Andre Anjos

@andre.anjos_gitlab

Thank you Marcus! That totally makes sense :)

Andre Anjos

@andre.anjos_gitlab

Morning all! @mottosso I've managed to run Pyblish inside 3ds Max, but it hangs on the Pyblish startup screen as above.
I'm using Python 3.7, PyQt5.15.1 and latest Pyblish QML 1.11.4.
Thank you in advance! :)

Marcus Ottosson

@mottosso

Morning! That's interesting

Are you able to see why?

What are you calling to get to there?

I would try and break down the show function, call each line yourself until you hit the point whereby it hangs

It likely doesn't crash, it likely is just waiting for input from somewhere

Andre Anjos

@andre.anjos_gitlab

It hasn't shown any problems at the minute but will use the show function to see if something weird happens

Marcus Ottosson

@mottosso

Actually, the fact that you are seeing a splash screen is telling me something. It means Pyblish is calling on the Qt bindings from 3ds max

See if you can remove the call to the splash screen from within show

Andre Anjos

@andre.anjos_gitlab

It was interesting that when using my previous version of Pyblish QML 1.10.2, by just switching the order of the binding in the QT.py file it works without problems

def _install():
    # Default order (customise order and content via QT_PREFERRED_BINDING)
    default_order = ("PyQt5", "PySide2", "PySide", "PyQt4")
    preferred_order = list(
        b for b in QT_PREFERRED_BINDING.split(os.pathsep) if b

Ah cool will do that :)

thank you!

Marcus Ottosson

@mottosso

No worries. Also take care about those later versions of Qt

QML was made with 5.12 or earlier I think

Andre Anjos

@andre.anjos_gitlab

Right! No worries will downgrade it if needed to 5.12 :)

cheers for the heads up

Johannes Hezer

@nebukadhezer

How does max communicate with the qml version? We run pyblish lite in max... and it behaves most of the time

Marcus Ottosson

@mottosso

Should be the same as for Maya/Houdini/etc, it'll run as a separate process, sending/receiving commands via stdin/stdout.

Good to know Lite works in 3ds, I haven't had a chance to test that yet!

Johannes Hezer

@nebukadhezer

Ok I had problems in max with qts event loop and needed to create a separate one as it wasn’t processing the event loop , but that was in another tool ...

David Lai

@davidlatwe

Hmmm, here's an old branch in our fork which was created by my colleague for working with 3dsMax. :point_down:
https://github.com/MoonShineVFX/pyblish-qml/tree/3dsmax

Not sure how it works now though, but I remember he did pull it off.

Andre Anjos

@andre.anjos_gitlab

That's really interesting! Thanks @davidlatwe ! :)
I'm currently stuck with the latest version of Pyblish QML and Python 3.7.
But I manage to run it with production versions, above

Also by changing the QT Binding order of PySide2 and PyQt5

David Lai

@davidlatwe

Nice :+1:

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