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USD on the Web prototype can be tested here.

Wednesday, August 17^th 2022 (11:00AM PT/2:00PM ET/9:00PM GMT)

Proposed agenda:

• Post-SIGGRAPH 2022 regroup
  • Aligning with Assets Working Group regarding validation, JavaScript-to-WASM bindings for USD, etc.

Wednesday, June 15th 2022 (11:00AM PT/2:00PM ET/9:00PM GMT) Wednesday, July 13th 13^th 2022 (11:00AM PT/2:00PM ET/9:00PM GMT)

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• Anything interesting to show?
• Proposed agenda:
  • From previous conversations:
    • USDz support can require significant effort for validating assets, and is a manual process.
    • Proposed action item: combine efforts to create a validation tool, if issues are difficult to raise to vendors/implementers.
  • Potential questions:
    • Have the issues resolved at the source ()
    • Enhance existing usdchecker vs. develop a different tool?
    • Which runtime versions should be supported/specified?
    • etc.

Wednesday, May 18th 18^th 2022 (11:00AM PT/2:00PM ET/9:00PM GMT)

• Follow-up on conversations from previous session about comparing glTF and USD for visualization
  • Eric Chadwick provided a description the Wayfair workflow:
    • Relying on 3ds Max and Maya to author and design content, using mostly VRay materials
    • Baking down textures and geometry to later package assets in USDz format
    • Strong overlap with parallel conversations about LoDs, texture/mesh compression also covered in main Working Group and Games sub-working group
    • Regarding interactive experiences (mobile/AR/VR/XR), fast loading time, rendering-optimized content is a must
      • Users/downstream consumers are unlikely to stand with their devices while waiting for content to load
      • Experience may be jarring if content suddenly appears in the world, or partially loads
• Early conversation about combining efforts regarding asset compliance/validation for Apple's USDz format
  • Avoiding reinventing the wheel by sharing tools/scripts to flag potential known issues with Apple's interpretation of the format
  • Perhaps enhancing the usdchecker tool to support more options, or take inspiration from the tool and build a separate/specialized one

Wednesday, April 20th 20^th 2022 (11:00AM PT/2:00PM ET/9:00PM GMT)

• Touch point on the principal focus of the initiative:
  • Common agreement that the focus of the project is not to compete or dethrone glTF as the transmission format for assets and content on the web.
  • glTF has specific targets, use cases and built-in optimizations specifically targeting transmission and "last-mile" delivery of assets, which is less of a concern for authoring formats such as USD.
    • Nick Porcino mentioned intent to revisit his Last mile vs. interchange article, to update the content based on latest industry development
  • It may be worth revisiting some of the existing documents published to state this more publicly, as this none-competitive aspect may otherwise not be clear to the audience outside the USD Working Group.
  • Potential future work may include publishing a "best practices" guide regarding publishing USDz assets for the Web, covering topics such as asset complexity/density, texture optimizations, known limitations, etc.
• Alexander Schwank shared updates:
  • From the MaterialX Working Group, about Wayfair sharing their experience transitioning from a glTF pipeline towards a USD one:
    • see group meeting notes: April 7, 2022
  • From Intel, about the Sponza scene, available in glTF, USD and other formats:
    • https://www.intel.com/content/www/us/en/developer/topic-technology/graphics-research/samples.html
    • https://www.intel.com/content/www/us/en/newsroom/opinion/intel-graphics-step-up-research.html#gs.xfzxkf
• Potential groups worth reaching out to regarding USD "runtime" features:
  • Sketchfab
  • Shopify
• Potential Questions for the larger USD group:
  • Does Autodesk envision any specific use cases for WebAssembly? Any gaps, limitations with the current prototype?
    • Jerran Schmidt- While data visualization is one component, I did mention briefly in the HgiWebGPU presentation that web-based USD content authoring applications are a particular use case for this. (Note: I no longer represent Autodesk on this)
  • Does Pixar see any potential openings for platforms other than X86/64-bit architectures?

Wednesday, March 23rd23^rd, 2022 (11:00AM PT/2:00PM ET/9:00PM GMT)

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