Something wrong about draco in last version

[lo-th]

Hi
To limite file size, i export my morph separately from main model
and recreate morph in javacript .
so mesh should have exacte same vertex number.

but in last version 2025111.2 on max 2026, Draco compression give bad result
compared to 20240125.3 on max 2024 with exact same setting

I wonder what could have changed ?
to have an inconsistent number of vertex

i see draco have option to keep vertex count
maybe need add to setting

[thomlucc]

Hi @lo-th - Could you please provide a repro?

[thomlucc]

Any chance you could provide a repro @lo-th ?

[lo-th]

i use it on my PHY repro for example on human demo (morph + skinning)
but i'm not babylon user ;)

for installer is 1.7.1 version last update 11/11/2025

but yes since no more support i use version find in a blog frogsinspace
so i think draco is incorrectly configured

[bghgary]

Do you have a max scene we can use to diagnose?

[thomlucc]

Closing for now as no activity. @lo-th, if you have a max scene, we'll re-open.

[lo-th]

i think is come from : Added support for 16bit bone indexes on [20250428.5] version
export vertex number is unconsistant

( add max scene is complex because is on multiple file and is result of long work )

[lo-th]

i see is because i need use ( export tangents and draco compression )

export tangents change number of vertrex of skinning in next version (c1_b)
but not in first 2026 release (c1_a)

here the test file

cylinder_test.zip

[SergioRZMasson]

Thanks for the test file @lo-th , I will be taking a look next week. I will keep you updated.