WASM support

[andrewvarga]

Really nice library! How difficult do you think it would be to be able to build it for wasm?

[pablode]

Hi! I don't think it should be too difficult.

I'm not sure about OpenUSD (the main dependency) though. There's no official support but Autodesk has ported it to WASM a while back and there seems to be an active branch. There's also this slide deck with some more references.

[andrewvarga]

Hi! I don't think it should be too difficult.

I'm not sure about OpenUSD (the main dependency) though. There's no official support but Autodesk has ported it to WASM a while back and there seems to be an active branch. There's also this slide deck with some more references.

I see, so I would have to replace the OpenUSD dependency with the Autodesk port?
I'm using the wasm build of that fork already in gltfeditor.com when importing usd models.

[pablode]

If you already have a WASM OpenUSD port, you can probably build against it (that is, if you built it yourself).

Could be, though, that you have to add some compiler/linker flags to this file: https://github.com/pablode/guc/blob/main/cmake/UsdDefaults.cmake
as OpenUSD does not expose them in their CMake target and Adsk might have made changes for Emscripten support (perhaps a git diff can help here).