Page Comparison

Wednesday, October 20, 2021 (2:00PM PT/5:00PM ET)

Demo of assets viewing and interaction in Autodesk Forge in Chrome
- Rendering, selection, and scene-inspection
- A lot of work has been done on bindings
- Custom changes to WebASM build of TBB

Conversion from USDZ into blender and out to GLTF is a great short term solution, but...
Worth doing test for conversion of animated models over time.
Makes a compelling case for a native Sdf plug-in for GLTF import/export.
Past initial mesh import, would USDSkel and GLTF bi-directional conversion be lossless?
Draco plugin may need to support native Draco files better, or does it matter in a separate Sdf plugin?
KTX as native Hio plugin would likely be mandatory, does Hio support unpacking direct to GPU texture via Hgi? (Brian from AMD hints at a yes)
Is MaterialX and its advances (especially in tackling WebASM) going to be the way forward for all shading interchange in USD.
OCIO and color accuracy again came up as important, but too large a topic compared to getting a better bare-bones implementation anyone can use.
~~Video Conference Link~~

Autodesk showed USD import into Forge. Translates to Forge-native geometry.
Autodesk also working on a WebGPU Hydra delegate that does PBR shading.
A lot of overlap between the delegate above and Filament (i.e. SPIR-V tools running in browser)
TBB remains an issue that everyone is keen to solve.
Philippe Sawicki working on an MVP list for JS-bindings.
Dhruv Govil is interested in what can be leveraged from ASWF initiative to auto-gen Rust bindings.

JavaScript bindings, need a real strategy on how to tackle them.

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See what changes have landed in /dev that may help reduce reliance on WebAsm-TBB and its CORS issues.

due to the lack of 2 http headers WebASM using threads will fail to load
a local server.py can be used to serve the branch locally instead
Colored Quad, Sphere, and Cube are USDA. Gold monkey rotating in circle is USDZ. PBR monkey spinning around its center is glTF.
HdFilament shader generation is minimal and displayColor is used for primitives. Textures on monkey.usdz are not loading correctly.
USDA loaded can be edited in the HTML: https://github.com/marsupial/USD/blob/HdFilament/extras/imaging/examples/hdFilament/index.html#L119

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