3rd party FBX loading performance testing, ufbx easily wins..

[robertosfield]

The graphics-programming-weekly round up includes a link to github repo that has a test comparing various FBX loaders performance. Results are interesting, I'm posting here for future reference in case any folks want to write a a replacement for Assimp's FBX loader.

The test repo: https://github.com/aras-p/test-fbx-parsers

Below are the test results from the above repo:

---

Ryzen 5950X (Windows 10, Visual Studio 2022 v17.13.1):

Parser	Time sequential, s	Time parallel, s	Executable size, KB
ufbx	9.8	2.7	457
ufbx w/ internal threads	4.4	2.6	462
FBX SDK	869.9	crash!	4508
AssImp	33.9	26.7	1060
OpenFBX	26.7	15.8	312

Apple M4 Max (macOS 15.4, Xcode 16.1):

Parser	Time sequential, s	Time parallel, s	Executable size, KB
ufbx	6.8	2.0	362
ufbx w/ internal threads	2.6	1.7	364
FBX SDK	159.2	crash!	7228
AssImp	18.2	4.8	1036
OpenFBX	19.3	9.4	264

[xarray]

I use OpenFBX in my own OSG nodekits library osgverse (https://github.com/xarray/osgverse/blob/master/readerwriter/LoadSceneFBX.cpp). It works good for most cases but I find that it can't parse all the skeleton and skinning data from complex FBX files.

I also use ufbx in another Vulkan tutorial repo (https://gitee.com/xarray/vulkan-class/blob/master/c16_model/main.cpp), which is for my video course at https://academy.mthreads.com/goods/show/30 . But I haven't made full use of this library yet.

[MasonAlice]

Yes, Godot uses ufbx to parse FBX files.