July 24, 2024

Time

9AM PST



Link

https://zoom-lfx.platform.linuxfoundation.org/meeting/94179328045?password=3a3f2043-0d30-4e1e-b9b5-35378146b18c

Agenda

  • LOD USD Schema - Discussion on what's currently liked / disliked for implementation.

  • Complex attribute data in USD - How much editor data should live in USD?

  • Primal Cube update.

Complex Attribute

Calvin has issue ocncerns about performance on Complex attribute.

Jeremiah and his studio didn't see any scalability issue.

Calvin and Matt Johnson are speaking about the compound attributes.

Calvin wants to describe everything at Unreal level in USD. In a static Mesh componant, there are more than 1 thousand attributes. Eith millions of actors with all their compenents, they are wondering how the compound will handle this.
Calvin's team is using Omniverse.

For Jeremiah, if there are perfomance issues, one idea would be to flatten the structure (eg : nested attribute).

Another idea : do you need all the data outside of Unreal?

When Calvin is generating mesh in Houdini, a lot of settings are generated (uvs, etc) So Houdini is adding everything in USD.

Is the compound API ready for this?

How much of this data is needed by the composition arc? 

There should be a discussion on a thread in Slack or Discord. In this forum : https://forum.aousd.org

May we can tag attributes we need to export in Unreal?

Regarding scalability, does using default value help ? It seems that compound API is not supporting it?

The biggest issue is the construction of the structure.

LOD USD Schema - Discussion on what's currently liked / disliked for implementation.

https://github.com/ubisoft/usd-lod-schema-proposal

 the level of control is good.
The original proposal is a draft. We maybe need to better write it down. We need to fork it and heavily create a real one. The Ubisoft one is hypothetical. For example, how do we do HLOD?

Maybe, having more applied schemas would be better.

https://lodbook.com could help on defining what are LODs.

We need to focus on what information is important for LOD to be engine agnostic.

We need to check the Paolo's work.

https://forum.aousd.org/t/gameengine-as-a-sceneindex-plugin/1238 

Siggraph

Monday at noon a Bof

Next meetings:

Next Steps

  • Discussion on AOUS forum about complex attribute

  • Discussion about LOD

Attendance

François Devic, Co-Lead
TJ Trently, Co-Lead, Firewalk
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 Beers
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 Dempsey
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)
Calvin Gu
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
Corey Revilla
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
Diya Joy
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
Geoff Evans, NVIDIA
Georgie Challis
Gordon Bradley, Autodesk
Gordon Cameron, Epic Games
Guido Quaroni, Adobe
Guillaume Laforge, Autodesk
Guy Martin, NVIDIA
Hamed Sabri
Hendrik Helpach
Henrik Edstrom, Autodesk
Henry Vera, DNEG
Ife Olowe
Indy Ray
James Pedlingham, Foundry
Jason Rosson
Jean-Silas Moor
Jeff Bradley, Dreamworks
Jenna Bell, Disney / Invisible Thread
Jennifer Horowitz, Maxar
Jenny Zhang
Jeremiah Zanin, Santa Monica Studio
Jeremy Cowles - USD Assets WG Chair, Valve
Jerran Schmidt, NVIDIA
Jerry Gamache
Jesse Barker
Jesse Ng, Metropolitan Museum of Art
Jessica Wang, Pixar
Joe Bryant
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
JP Mackel
JT Nelson, Pasadena Open Source Consortium/SoCal Blender group
Julien Dubuisson
Kev Kirkland
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
Mitch Prater (Laika LLC) 
Nat Brown
Natasha Tatarchuk, Unity
Neil Chodorowski
Niall Redmond, Foundry
Nicolas Popravka, Soul Machines
Nicolas Savva
Nishanth Singaraju
Nishith Singhai
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 Frangenberg
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
Simon Haegler, Esri
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 Chollet
Thomas Kumlehn
Tiago Carvalho
Tim Armstrong
Tim Fowler
Tzung-da Tsai
Vadim Slyusarev
Varun Talwar
Wayne Wu
Will Telford, NVIDIA
Xiaoxi Liu, Unity
Yassine Mankai
YJ Jang

License: CC BY 4.0, Copyright Contributors to the ASWF USD working group.