Bug when trying to load 2 GLB in WebGL at the same time

[De-Panther]

I try to start loading to GLB files at the same time on WebGL:
https://cdn.jsdelivr.net/npm/@webxr-input-profiles/assets/dist/profiles/oculus-touch/right.glb
https://cdn.jsdelivr.net/npm/@webxr-input-profiles/assets/dist/profiles/oculus-touch/left.glb

The first one(right.glb) loads, the second one(left.glb) fails but without returning success=false.
It just stops loading at gltfRoot = await Task.Run( () => ParseJson(json) );

glTFast/Runtime/Scripts/GltFast.cs

Line 292 in cc3c7a3

gltfRoot = await Task.Run( () => ParseJson(json) );

Waiting for one model to load and then loading the other, does work.

I did notice that while the second model stuck, the first model is in the process of await Prepare()

glTFast/Runtime/Scripts/GltFast.cs

Line 255 in cc3c7a3

success = success && await Prepare();

Unity 2019.4.7f1

Also, the package works much faster now and with less stuttering while loading. Thanks :)

[De-Panther]

It seems that Task.Yield() works well on WebGL, but Task.Run() has issues.

I created an IDeferAgent that returns false for ShouldDefer(float duration) and call Task.Yield in BreakPoint() and BreakPoint(float duration),
and now I do manage to load two models at the same time.

[atteneder]

Thanks for the report, and detecting the issue...you pinned it down already! :)

Looks like Task.Run does not work in WebGL yet (more on threading in WebGL).

I'll fix it today.