Jonathan Stone
@sheriffstone.bsky.social
Lead Rendering Engineer, Materials and Shading at the Lucasfilm Advanced Development Group. Former graphics lead at Double Fine Productions. Music nerd.
Reposted by Jonathan Stone
ASWF #DevDays is next week! Join developers from around the world on Sept. 25 by picking a task from an #ASWF project, including that can be completed in one day. All levels of experience are welcome! Find out more and sign up to participate at www.aswf.io/dev-days.
@materialx.bsky.social
@materialx.bsky.social
Dev Days 2025 - ASWF
www.aswf.io
September 16, 2025 at 6:32 PM
ASWF #DevDays is next week! Join developers from around the world on Sept. 25 by picking a task from an #ASWF project, including that can be completed in one day. All levels of experience are welcome! Find out more and sign up to participate at www.aswf.io/dev-days.
@materialx.bsky.social
@materialx.bsky.social
Reposted by Jonathan Stone
MaterialX v1.39.4 has been released!
This version adds support for WebGPU Shading Language, hex-tiled and lat-long images, NanoColor spaces, 2D fractals, animated materials, and many contributions from our participants in ASWF Dev Days 2025.
github.com/AcademySoftw...
This version adds support for WebGPU Shading Language, hex-tiled and lat-long images, NanoColor spaces, 2D fractals, animated materials, and many contributions from our participants in ASWF Dev Days 2025.
github.com/AcademySoftw...
September 15, 2025 at 9:23 PM
MaterialX v1.39.4 has been released!
This version adds support for WebGPU Shading Language, hex-tiled and lat-long images, NanoColor spaces, 2D fractals, animated materials, and many contributions from our participants in ASWF Dev Days 2025.
github.com/AcademySoftw...
This version adds support for WebGPU Shading Language, hex-tiled and lat-long images, NanoColor spaces, 2D fractals, animated materials, and many contributions from our participants in ASWF Dev Days 2025.
github.com/AcademySoftw...
Reposted by Jonathan Stone
Our next virtual #DevDays is coming up Sept. 25! Spend a day contributing to one of the #ASWF projects and supporting the software our industry relies on. Find out more and sign up at www.aswf.io/dev-days/!
Dev Days 2025 - ASWF
www.aswf.io
September 3, 2025 at 11:05 PM
Our next virtual #DevDays is coming up Sept. 25! Spend a day contributing to one of the #ASWF projects and supporting the software our industry relies on. Find out more and sign up at www.aswf.io/dev-days/!
Reposted by Jonathan Stone
Most of the slides and course notes for the SIGGRAPH 2025 Physically Based Shading in Theory and practice course are now online, with more to follow:
blog.selfshadow.com/publications...
blog.selfshadow.com/publications...
SIGGRAPH 2025 Course: Physically Based Shading in Theory and Practice
blog.selfshadow.com
August 10, 2025 at 2:47 PM
Most of the slides and course notes for the SIGGRAPH 2025 Physically Based Shading in Theory and practice course are now online, with more to follow:
blog.selfshadow.com/publications...
blog.selfshadow.com/publications...
Thanks to our colleagues at Autodesk, IKEA, NVIDIA, OTOY, and Pixar Animation Studios for their amazing work on the MaterialX and OpenPBR Virtual Town Hall for @aswf.io Open Source Days 2025.
The full slide deck can be found at materialx.org/assets/ASWF_...
The full slide deck can be found at materialx.org/assets/ASWF_...
August 7, 2025 at 9:25 PM
Thanks to our colleagues at Autodesk, IKEA, NVIDIA, OTOY, and Pixar Animation Studios for their amazing work on the MaterialX and OpenPBR Virtual Town Hall for @aswf.io Open Source Days 2025.
The full slide deck can be found at materialx.org/assets/ASWF_...
The full slide deck can be found at materialx.org/assets/ASWF_...
Reposted by Jonathan Stone
We're excited to share #OpenPBR Volume, a new collaboration between Autodesk and Sidefx to create an open standard enabling users to define the look of volumetric assets. OpenPBR is a subproject of @materialx.bsky.social. Read more: www.aswf.io/blog/openpbr...
Announcing OpenPBR Volume! - ASWF
OpenPBR Volume is a new collaboration between Autodesk and SideFX to create a common model for defining the look of volumetric assets.
www.aswf.io
August 5, 2025 at 10:00 PM
We're excited to share #OpenPBR Volume, a new collaboration between Autodesk and Sidefx to create an open standard enabling users to define the look of volumetric assets. OpenPBR is a subproject of @materialx.bsky.social. Read more: www.aswf.io/blog/openpbr...
Reposted by Jonathan Stone
New at #SIGGRAPH2025:
Can we make Perlin Noise stretch along some underlying vector field? Well it turns out it's possible with two simple additions to the original method! No need for advection or convolutions.
Find the paper and implementations here:
github.com/jakericedesi...
Can we make Perlin Noise stretch along some underlying vector field? Well it turns out it's possible with two simple additions to the original method! No need for advection or convolutions.
Find the paper and implementations here:
github.com/jakericedesi...
July 29, 2025 at 12:16 AM
New at #SIGGRAPH2025:
Can we make Perlin Noise stretch along some underlying vector field? Well it turns out it's possible with two simple additions to the original method! No need for advection or convolutions.
Find the paper and implementations here:
github.com/jakericedesi...
Can we make Perlin Noise stretch along some underlying vector field? Well it turns out it's possible with two simple additions to the original method! No need for advection or convolutions.
Find the paper and implementations here:
github.com/jakericedesi...
Join us on August 5th for the MaterialX Virtual Townhall at ASWF Open Source Days 2025, featuring presentations from Autodesk, IKEA, Lucasfilm, NVIDIA, OpenPBR, OTOY, and Pixar.
events.linuxfoundation.org/open-source-...
events.linuxfoundation.org/open-source-...
August 2, 2025 at 3:13 AM
Join us on August 5th for the MaterialX Virtual Townhall at ASWF Open Source Days 2025, featuring presentations from Autodesk, IKEA, Lucasfilm, NVIDIA, OpenPBR, OTOY, and Pixar.
events.linuxfoundation.org/open-source-...
events.linuxfoundation.org/open-source-...
Reposted by Jonathan Stone
#LAIKA Joins the #AcademySoftwareFoundation - award-winning #animation studio and longtime contributor to the MaterialX project, and #OpenUSD Working Group plans to help expand the organization’s mission and learning programs. bit.ly/40Iu6NN #Stopmotion #3Dprinting #AnimationWorld #VFXWorld
August 1, 2025 at 5:16 PM
#LAIKA Joins the #AcademySoftwareFoundation - award-winning #animation studio and longtime contributor to the MaterialX project, and #OpenUSD Working Group plans to help expand the organization’s mission and learning programs. bit.ly/40Iu6NN #Stopmotion #3Dprinting #AnimationWorld #VFXWorld
Reposted by Jonathan Stone
We've just marked the first release candidate for MaterialX v1.39.4 on GitHub, and we'd love to get feedback from teams with MaterialX and USD integrations.
The tag for the release candidate is v1.39.4-rc1, and you can read more about the new features and updates at github.com/AcademySoftw...
The tag for the release candidate is v1.39.4-rc1, and you can read more about the new features and updates at github.com/AcademySoftw...
github.com
July 24, 2025 at 10:25 PM
We've just marked the first release candidate for MaterialX v1.39.4 on GitHub, and we'd love to get feedback from teams with MaterialX and USD integrations.
The tag for the release candidate is v1.39.4-rc1, and you can read more about the new features and updates at github.com/AcademySoftw...
The tag for the release candidate is v1.39.4-rc1, and you can read more about the new features and updates at github.com/AcademySoftw...
Reposted by Jonathan Stone
Join us on August 5th for the MaterialX and OpenPBR Virtual Townhall at ASWF Open Source Days 2025, featuring presentations from Autodesk, IKEA, Lucasfilm, NVIDIA, OTOY, and Pixar RenderMan.
events.linuxfoundation.org/open-source-...
events.linuxfoundation.org/open-source-...
Virtual Townhalls | LF Events
Leading up to our main program on August 10, we will be holding a series of virtual town halls for Academy Software Foundation projects including MaterialX, OpenCue, OpenColorIO, Open RV, among others...
events.linuxfoundation.org
July 12, 2025 at 11:57 PM
Join us on August 5th for the MaterialX and OpenPBR Virtual Townhall at ASWF Open Source Days 2025, featuring presentations from Autodesk, IKEA, Lucasfilm, NVIDIA, OTOY, and Pixar RenderMan.
events.linuxfoundation.org/open-source-...
events.linuxfoundation.org/open-source-...
Reposted by Jonathan Stone
We're excited to announce that our keynote for Open Source Days 2025 will be delivered by the Academy Award®-winning ‘Flow’ filmmaking team! Join us for free on August 10 (in-person or virtually) for that and much more! Full schedule and registration details on our blog: www.aswf.io/news/open-so...
Open Source Days 2025 Keynote to be Delivered by Academy Award®-winning ‘Flow’ Filmmaking Team - ASWF
The Academy Software Foundation has announced the program for its annual Open Source Days event taking place August 4-11, which will include a keynote talk by the filmmaking team who worked on the ani...
www.aswf.io
July 9, 2025 at 12:49 AM
We're excited to announce that our keynote for Open Source Days 2025 will be delivered by the Academy Award®-winning ‘Flow’ filmmaking team! Join us for free on August 10 (in-person or virtually) for that and much more! Full schedule and registration details on our blog: www.aswf.io/news/open-so...
Congratulations to Alain Hostettler on a great talk at HPG 2025, including the announcement of a Pixar/Lucasfilm collaboration on the MaterialX Physically Based Shading nodes in RenderMan XPU!
www.youtube.com/watch?v=md6S...
www.youtube.com/watch?v=md6S...
HPG 2025: Day 2 - June 24th
YouTube video by High-Performance Graphics
www.youtube.com
June 25, 2025 at 4:38 PM
Congratulations to Alain Hostettler on a great talk at HPG 2025, including the announcement of a Pixar/Lucasfilm collaboration on the MaterialX Physically Based Shading nodes in RenderMan XPU!
www.youtube.com/watch?v=md6S...
www.youtube.com/watch?v=md6S...
The HPG 2025 Conference starts tomorrow, and I'm looking forward to the MaterialX talk from my ILM colleague Alain Hostettler, the RenderMan XPU talk from Pixar, and the Slang talk from @shannonin3d.bsky.social.
highperformancegraphics.org/2025/program...
highperformancegraphics.org/2025/program...
High-Performance Graphics 2025
High-Performance Graphics 2025 - June 23-25 Copenhagen
highperformancegraphics.org
June 23, 2025 at 12:17 AM
The HPG 2025 Conference starts tomorrow, and I'm looking forward to the MaterialX talk from my ILM colleague Alain Hostettler, the RenderMan XPU talk from Pixar, and the Slang talk from @shannonin3d.bsky.social.
highperformancegraphics.org/2025/program...
highperformancegraphics.org/2025/program...
Reposted by Jonathan Stone
The SIGGRAPH Physically Based Shading course is back this year: blog.selfshadow.com/publications...
SIGGRAPH 2025 Course: Physically Based Shading in Theory and Practice
blog.selfshadow.com
June 10, 2025 at 3:19 PM
The SIGGRAPH Physically Based Shading course is back this year: blog.selfshadow.com/publications...
This was a really fun conversation on MaterialX, glTF, and OpenUSD at the Metaverse Standards Forum last week, and I thought I'd share it here for interested folks.
www.youtube.com/watch?v=m-bE...
www.youtube.com/watch?v=m-bE...
Material Convergence - Material, glTF, and USD
YouTube video by Metaverse Standards Forum
www.youtube.com
May 3, 2025 at 6:56 PM
This was a really fun conversation on MaterialX, glTF, and OpenUSD at the Metaverse Standards Forum last week, and I thought I'd share it here for interested folks.
www.youtube.com/watch?v=m-bE...
www.youtube.com/watch?v=m-bE...
Reposted by Jonathan Stone
One update we want to celebrate in USD 25.05 is having MaterialX v1.39.3 -- which includes OpenPBR Surface and the Chiang Hair BSDF -- as the new default MatX version. 🎉
Thank you for the close collab @materialx.bsky.social! 💖 We're excited to see the cool things folks create with this combo!
Thank you for the close collab @materialx.bsky.social! 💖 We're excited to see the cool things folks create with this combo!
May 2, 2025 at 3:46 AM
One update we want to celebrate in USD 25.05 is having MaterialX v1.39.3 -- which includes OpenPBR Surface and the Chiang Hair BSDF -- as the new default MatX version. 🎉
Thank you for the close collab @materialx.bsky.social! 💖 We're excited to see the cool things folks create with this combo!
Thank you for the close collab @materialx.bsky.social! 💖 We're excited to see the cool things folks create with this combo!
Reposted by Jonathan Stone
Join the 3D Asset Interoperability Working Group on April 30th for the education session, Material Convergence - MaterialX, glTF, and USD with Jonathan Stone and Ed Mackey. All members are welcome! Not a member? Join us - metaverse-standards.org/members/
#glTF #MaterialX #USD
#glTF #MaterialX #USD
April 24, 2025 at 1:56 PM
Join the 3D Asset Interoperability Working Group on April 30th for the education session, Material Convergence - MaterialX, glTF, and USD with Jonathan Stone and Ed Mackey. All members are welcome! Not a member? Join us - metaverse-standards.org/members/
#glTF #MaterialX #USD
#glTF #MaterialX #USD
Happy twentieth to the Psychonauts crew, an amazing game team that I remain deeply proud to have worked alongside. Thanks to @timoflegend.bsky.social, @erikrobson.net, @doubleanna.bsky.social, @keescheese.bsky.social, @scottlava.bsky.social, and the rest of this brilliant band of troublemakers.
Happy TWENTIETH BIRTHDAY to Psychonauts! Here’s to a very special game, a very special team, and a very special community of players, cosplayers, and paranormal paratroopers! ❤️🧠🌀🕸️💥🐢🍰🐻🪶🌲🧘🏽🚣♂️🏆🎭🛶🪬🛀🏼🧸🎉🧡💚💭🧊🔥!
April 21, 2025 at 7:35 PM
Happy twentieth to the Psychonauts crew, an amazing game team that I remain deeply proud to have worked alongside. Thanks to @timoflegend.bsky.social, @erikrobson.net, @doubleanna.bsky.social, @keescheese.bsky.social, @scottlava.bsky.social, and the rest of this brilliant band of troublemakers.
Reposted by Jonathan Stone
Are you interested in contributing to an #ASWF project but don't know where to start? Join us on May 15 for #DevDays and spend one day learning about a project, benefiting from the mentorship of project leaders, and of course writing code! Register at devdays.aswf.io.
April 21, 2025 at 6:33 PM
Are you interested in contributing to an #ASWF project but don't know where to start? Join us on May 15 for #DevDays and spend one day learning about a project, benefiting from the mentorship of project leaders, and of course writing code! Register at devdays.aswf.io.
Reposted by Jonathan Stone
The call for presentations for #ASWF Open Source Days is now open until May 18! We are expecting a full house again this year with 250+ software engineers from across the motion picture industry. Submit your talk at aswf.io/opensourcedays
Open Source Days | LF Events
Open Source Days, by the Academy Software Foundation, is the leading event for open source in VFX, animation, and digital content creation.
aswf.io
April 10, 2025 at 6:48 PM
The call for presentations for #ASWF Open Source Days is now open until May 18! We are expecting a full house again this year with 250+ software engineers from across the motion picture industry. Submit your talk at aswf.io/opensourcedays
Reposted by Jonathan Stone
EON: A practical energy-preserving rough diffuse BRDF; by Portsmouth, Kutz, and Hill. www.jcgt.org/published/00...
March 31, 2025 at 8:37 PM
EON: A practical energy-preserving rough diffuse BRDF; by Portsmouth, Kutz, and Hill. www.jcgt.org/published/00...
Reposted by Jonathan Stone
Implemented USD point instancer primvar support in my toy renderer the last few days. Can now render this 2D Gaussian Splatting (2DGS) scene with a single mesh & MaterialX material.
(Created by Oliver Markowski with Houdini, link see below ⬇️)
(Created by Oliver Markowski with Houdini, link see below ⬇️)
March 11, 2025 at 5:55 PM
Implemented USD point instancer primvar support in my toy renderer the last few days. Can now render this 2D Gaussian Splatting (2DGS) scene with a single mesh & MaterialX material.
(Created by Oliver Markowski with Houdini, link see below ⬇️)
(Created by Oliver Markowski with Houdini, link see below ⬇️)
Reposted by Jonathan Stone
Did you know that many of the Academy Award winners and nominees used open source software? Learn more about some of the open source tools used on films like Flow and The Wild Robot at www.aswf.io/blog/this-ye... #ASWF #opensource #VFX #animation
This Year’s Hollywood Awards Season was Powered by Open Source - ASWF
Open source software contributed to the making of award winning films like Flow, Dune: Part Two, The Wild Robot, Inside Out 2 and Moana 2.
www.aswf.io
March 10, 2025 at 6:41 PM
Did you know that many of the Academy Award winners and nominees used open source software? Learn more about some of the open source tools used on films like Flow and The Wild Robot at www.aswf.io/blog/this-ye... #ASWF #opensource #VFX #animation
Although it’s a small set of updates, I’m particularly proud of this latest release because it resulted from a collaboration between the @openusd.bsky.social and @materialx.bsky.social projects, with the goal of making MaterialX v1.39.3 the new default in USD 25.05.
MaterialX v1.39.3 has been released!
This version improves the alignment between MaterialX and OpenUSD, adds support for OSL v1.14 and MDL v1.10, and includes optimizations to ShaderGen and GitHub CI to improve performance for artists and developers.
github.com/AcademySoftw...
This version improves the alignment between MaterialX and OpenUSD, adds support for OSL v1.14 and MDL v1.10, and includes optimizations to ShaderGen and GitHub CI to improve performance for artists and developers.
github.com/AcademySoftw...
March 8, 2025 at 5:50 PM
Although it’s a small set of updates, I’m particularly proud of this latest release because it resulted from a collaboration between the @openusd.bsky.social and @materialx.bsky.social projects, with the goal of making MaterialX v1.39.3 the new default in USD 25.05.