Sandbox: loading `.babylon` file exported from glb never ends

Bugs
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1

OS: Windows 10
GPU: GTX 1050 2GB
Browser: Chrome and Firefox
Ver: Babylon.js v7.21.5
Url: https://sandbox.babylonjs.com/
Expected: Loaded successfully
Actual: Loading never ends
Steps:

  1. Get a glb model from glTF-Sample-Assets here
  2. Open sandbox and load it.
  3. Click the Export to Babylon btn
    this is the btn
    this is the btn430×570 26.1 KB
  4. Get a scene.babylon file (attached below for reference)
    scene.zip (6.0 MB)
  5. Open sandbox and load the scene.babylon file.
  6. Loading never ends.
    just like this
    just like this889×641 14.4 KB
2

It looks like a bug. let me take a look…

4

It looks like pendingData with an internal texture prevent the scene from being ready. Does it ring a bell @sebavan ?

6

Any news? Tested again with latest v7.22.3, and everything reproduces.

7

Yup still on it, the issue is the texture serialization for some reasons… :frowning:

2 Likes
8

The broken serialization will be fixed by Fix gltf thickness texture name by sebavan · Pull Request #15484 · BabylonJS/Babylon.js · GitHub

But this will still have some difference from before serializing. When using the transmission extension, gltf relies on quite a few code behind to apply special treatment to the refraction render target.

Code can not be serialized so when loading back the special treatment will be missing at the moment.

You could make a feature request for this part.

4 Likes