Forgive some ignorance here but I was just wondering why the tinyusdz library and not OpenUSD for what I would assume would offer more support as its their format? Love your work by the way its been so useful with O3DE! Thank you.

@Christian-Prather
Comments in issue #1332 indicate there's a lot of complexity around OpenUSD, to the point where it may not be feasible to integrate into assimp.

On the other hand, the TinyUSDZ project self-advertises as being self-contained and potentially easier to integrate:

TinyUSDZ is ... dependency-free... Other 3rd-party libraries included. Yes, you don't need pxrUSD/OpenUSD...!

@tellypresence
Thank you for the response that thread was insightful. I am wondering what support if any you may need to get tinyusdz added. Looks like a lot of good progress has been made already and many of the features are there! Would love to help out.

@Christian-Prather
Thank you for your kind words, it's good to see that someone is watching this effort closely.

Currently this PR is sort of in limbo pending resumption of work on the rendermesh-refactor branch of tinyusdz; it was proceeding rapidly through April, but hasn't been touched in a couple of months. Turns out I missed that the rendermesh-refactor branch got merged back into dev (the main branch) so this PR has been updated to a recent commit of dev.

P.S. It's nice of you to offer to help, do you happen to have any contacts on the tinyusdz project? 😉

As noted in the description, had to explicitly disable the USD feature CMake option to avoid the assimp github CI/PR checks rejecting the PR due to compiler warnings encountered in the external 3rd party tinyusdz project code.

If enabled by default, the tinyusdz repo will be automatically cloned, and the source files compiled, during the CI/PR checks. The compiler warnings in the 3rd party code will cause 2 tests to fail

• C/C++ CI / ubuntu-latest-g++-build-and-test
• C/C++ CI / windows-latest-cl.exe-build-and-test

C/C++ CI / ubuntu-latest-g++-build-and-test

Offending file is contrib/tinyusdz/autoclone/tinyusdz_repo-src/src/usdc-writer.cc, screenshot attached:

C/C++ CI / windows-latest-cl.exe-build-and-test

Offending file is contrib/tinyusdz/autoclone/tinyusdz_repo-src/src/external/stb_image.h, screenshot attached:

Lets see. Thanks a lot for your great work!!!

Thank you for the great work!
Looking forward to a new release
cc: @danoli3

@Christian-Prather Thank you for your kind words, it's good to see that someone is watching this effort closely.

Currently this PR is sort of in limbo pending resumption of work on the rendermesh-refactor branch of tinyusdz; it was proceeding rapidly through April, but hasn't been touched in a couple of months. Turns out I missed that the rendermesh-refactor branch got merged back into dev (the main branch) so this PR has been updated to a recent commit of dev.

P.S. It's nice of you to offer to help, do you happen to have any contacts on the tinyusdz project? 😉

Unfortunately I do not :) but if needed happy to help out in any other way, super excited to see this merged!

Excited to see this! Going to try it out in O3DE.
How are usd references handled? Example, when car.usd references tire.usd, are both file merged and flattened into one mesh?
Also, will the next release contain this change?