February 7, 2023

Time

9am Pacific

Agenda

Follow up
- Usage of kind and purpose in video games (https://academysoftwarefdn.slack.com/archives/C03GKF4DG7K/p1673464586138349 @spiff @Kristof Minnaert @Koen Vroeijenstijn @Levi Biasco and others)
  - Adding a Purpose page in the USD Book of Remedy : who can help @Kristof Minnaert?
- How to manage layer vs Sublayer ?
- Removal of Boost/Python (quick shout out to @Matthew Kuruc)
USD at GDC : when and where do a gathering?
Difference between FBX and USD based workflows.
- What does FBX provide that is not available in USD?
- What might be encountered when moving from an FBX based pipeline to USD?

Zoom

https://zoom-lfx.platform.linuxfoundation.org/meeting/94179328045

Notes

USD GDC

nVidia:

No hands on so far because of travel restriction

Gathering : Frieder Erdmann , Rebecca, Jeremiah Zanin

USD : kind and purpose

Thanks Sebastian "spiff" Grassia for sharing the kind file from Pixar)

Remedy usage is minimal at the moment. They want to expand the filtering usage. Purpose is not very important because they don't use hydra.

Alab is really using purposes. We need to find a way to make the Pixar example legal.

Is it simple to create a new kind?

We can check Sebastian "spiff" Grassia example.

we need to put info in the plug in info file. It is pretty simple.

Layer vs SubLayer

At Infinity War, USD is used for prototype. THe real usage is more referencing.

At SantaMonica studio, they try to figure out the USD usage, how to build scene. There will be huge transition from Maya.

At Remedy, At the begining, it was only referencing. For Geom/anim, sublayers could be a good usage.

Sublayering, source control can bring difficulties.

At Santa Monica Studio, There could be one file world file and have references from other world. They want to have layers by department. It could be nice to have overrides for Variant Sets.

Pixar : you can do more damages using sublayers. Pixar is working on namespace Edits. There could be orphrans if it is not done correctly.
THey are working on a project to avoid this:

interaction with Source Control
pipeline control for Orphans
Sublayering gives the ability to work on the same subject. It was requested by a lot of people.
Is there a lot of latency?
One of the challenge of the namespace Edit is that it checks a lot of things.

Boost removal

@Matthew Kuruc did an incredible work.

Some time in the near future, USD will be compiling without the usage of Boost except for Python.

They are approaching the removal concept by concept.

What about the other dependencies? Is ther a huge usage of Boost?

Move away from TBB for core
MaterialX have no external dependencies
every library that uses Boost should be reached out and explained that they shouldn't use boost.
TBB:
- creation of an abstraction (Work) to be able to use every own scheduler.
- Pixar is making the work management abstraction to be plugable.

For Remedy, the real issue is Boost Python.

For Santa Monica Studio: USD is in the tool so there is no real issue.
The TBB abstraction would be nice as they are using their own scheduler.

At EPIC, they use Boost for the Editor.

The final removing of Boost is also moving to C++17

USD vs FBX

Attendance

François Devic, Co-Lead
TJ Trently, Co-Lead, NetEase Games
Alex Schwank - WG Co-chair, Apple
Nick Porcino - WG Co-chair, Pixar
Michael Min - USD Camera WG, Netflix
Roman Zulak - USD on the web WG, NVIDIA
Aaron Luk, NVIDIA
Adam Harder
Alan Blevins, NVIDIA
Alessandro Bernardi - Ubisoft - HELIX Studio
Alex Gerveshi, AWS
Alex Wilkie
Alexander Kalyuzhnyy, Wizart Animation
Allen Hastings, Foundry
Aloys Baillet, Animal Logic
Alson Entuna, Crytek
Alyssa Reuter
Andy Biar, Warner Bros.
Ana Gomez
Anandhaiyappan, Botvfx
Angelo Gabriel Sapaula
Anthony Tan, Autodesk
Anton Palmqvist
Arash Keissami, Nira.app
Arielle Martin, Foundry
Ashwin Bhat - USD and MaterialX, Autodesk
Barry Ruff
Ben Chung-Hoon, NVIDIA
Ben Deniz
Bernard Kwok, Autodesk
Bill Dwelly
Bill Spitzak, Dreamworks Animation
Blazej Floch
Brian Gyss, 5th Kind
Bruno Ebe
Bruno Landry (Unity)
Carlos Felipe Garcia Murillo
Carolin Colón
Carson Brownlee, Intel
Charleen Chu, SPI
Charles Flèche, Ubisoft Montréal
Chris King
Christopher Lexington
Chris Rydalch, SideFX
Claire Chen
Claire Yb
Claude Robillard
Connor Smith, Magic Leap
Cory Omand, TWDS/Pixar
Curtis Andrus
Dan Herman
Dan Lee
Dan Rolinek
Daniel Heckenberg, Animal Logic
Daniel Lanner
Dave Hale, Riot Games
David Aguilar, Walt Disney Animation
David Larsson, Adobe
Dean Jackson, Apple
Deke Kincaid, Digital Domain
Dhruv Govil, Apple
Divyansh Mishra
Domenico Alessi
Dominic Couture
Doug MacMillan, Tippett Studio
Edward Slavin, NVidia
Élie Michel
Eric Chadwick, Wayfair
Eoin Murphy, NVidia
Eric Enderton, NVidia
Eric Majka, Psyonix/Epic Games
Erik Ostsjo
Étienne Archambault
F. Sebastian Grassia, Pixar
Fabrice Macagno, Animal Logic
Felix Herbst, Prefrontal Cortex
Fernando Leandro
Francois Lord, NAD-UQAC / Rodeo FX
Frieder Erdmann, Ubisoft Massive
Gary Jones, Foundry
Georgie Challis
Gordon Bradley, Autodesk
Gordon Cameron, Epic Games
Guido Quaroni, Adobe
Guillaume Laforge, Autodesk
Guy Martin, NVIDIA
Hendrik Helpach
Henrik Edstrom, Autodesk
Henry Vera, DNEG
James Pedlingham, Foundry
Jeff Bradley, Dreamworks
Jenna Bell, Disney / Invisible Thread
Jennifer Horowitz, Maxar
Jenny Zhang
Jeremiah Zanin, Santa Monica Studio
Jeremy Cowles - USD Assets WG Chair, Unity
Jerran Schmidt, NVIDIA
Jerry Gamache
Jesse Barker
Jesse Ng, Metropolitan Museum of Art
Joe Hultgren
John Burnett, Bonfire Studios
John Creighton, Apple
John Hood, SPI
John Mertic, Linux Foundation
Jon Creighton, Apple
Jon Wade, Spotify
Jonah Friedman, Autodesk
Jonathan Gerber
Jonathan Stone
Jonghwan Hwang
Jordan Soles, Rodeo FX
Jordan Thistlewood, Epic
Joshua Miller
Joseph Goldstone
JT Nelson, Pasadena Open Source Consortium/SoCal Blender group
Julien Dubuisson
Kevin Bullock
Kelvin Chu, Riot Games
Kimball Thurston, Weta
Koen Vroeijenstijn, Activision / Infinity Ward
Kristof Minnaert, Remedy Entertainment
Kurtis Schmidt
Laura Scholl
Larry Gritz, SPI
Lee Kerley, SPI
Levi Biasco, Santa Monica Studio
Louis Marcoux, NVIDIA
Lucas Morante, Illusorium
Luca Scheller, RiseFX
Luiz Kruel, R* NYC
Luke Titley
Manuel Köster, Crytek
Mark Alexander
Mark Elendt, SideFX
Mark Final, Foundry
Mark Masson
Mark Manca
Mark Sisson
Mark Tucker, SideFX
Marteinn Oskarsson, Sony Imageworks
Martin Karlsson
Mathieu Bertrand
Mathieu Mazerolle, Foundry
Matias Codesal, NVIDIA
Matt Johnson, Epic Games
Matt Kuruc, NVIDIA
Matthew Levine, WDAS
Matthew Low, DWA
Michael B. Johnson, Apple
Michael Blain, Unity
Michael Buckley
Michael Kass, NVidia
Michael Min
Mika Vehkala, Remedy Entertainment
Mikko Haapoja, Shopify
Nat Brown
Natasha Tatarchuk, Unity
Neil Chodorowski
Niall Redmond, Foundry
Nicolas Popravka, Soul Machines
Nicolas Savva
Nishanth Singaraju
Oliver Dunn
Oscar Sebio, Autodesk
Paolo Selva, Weta
Paul Baaske, Jellyfish Pictures
Paul Molodowitch, NVIDIA
Patrick Palmer
Peter Arcara
Pete Segal
Phil Sawicki, NVIDIA
Prapanch Swamy, Disney / Invisible Thread
Pier Paolo Ciarravano, MPC
Pierre-Luc Bruyere
Quentin Birrer
Ramesh Santhanam
Rebecca Hallac
Richard Kerris, nVidia
Richard Lei, Weta
Rob Pieké
Rob Stauffer, SideFX
Robert Krupa, Elemental Games
Robin Rowe, CinePaint
Rohit Khonde
Rory Woodford, Foundry
Ryan Stelzleni
Scott Geffert, Metropolitan Museum of Art
Scott Keating
Sean Looper, AWS
Sean McDuffee, Intel
Seb Schmidt, Weta
Sebastian Herholz, Intel
Sebastian Grassia, Pixar
Sebastian Rath, Snowtrack Montréal
Sebastien Dalgo, Unity
Sergei Shaykin, Apple (usdzconvert)
Sergio Rojas, Different Dimension
Serguei Kalentchouk, Netflix
Shane Davis, SideFX
Shawn Dunn, Epic Games
Silvia Palara
Sneha Jaikumar
Spencer Luebbert
Stefan Habel, Foundry
Stephan Leroux, Shopify
Steve Agland, Animal Logic
Steve Hwan, DD
Steve LaVietes
Steven Anichini, Disbelief
Sue Sauer, Sunrise Productions
Sylvain Trottier, NVIDIA
Thibault Lambert
Thomas Kumlehn
Tiago Carvalho
Tim Fowler
Tzung-da Tsai
Vadim Slyusarev
Varun Talwar
Wayne Wu
Will Telford, NVIDIA
Xiaoxi Liu, Unity
Yassine Mankai
YJ Jang