Alembic Import multiple mesh crash

When I try and import an Alembic file that has multiple meshes, UE crashes. When I only select one. It imports fine.

Hey Richard,

*sorry, you’ll get another email here. I accidentally posted the answer to another question on yours! That’s what I get for having multiple tabs opened!

Anyway, do you have a test asset that you can upload? I created a couple of scaling shapes with their own animations but these appear to import fine for me in 4.13 Preview 3.

I also imported these with each available Alembic option for Static, Geometry Cache, and Skeletal without the crash.

Thank you!

Tim

Did the file you tested have multiple meshes?

Here is the test file. Opens up fine in other apps.

http://a360.co/2cbvj69

Did the file you tested have multiple meshes?

Here is the test file. Opens up fine in other apps.

http://a360.co/2cbvj69

Thanks for the test asset. I get the crash after a few moments with yours but not with my simple shapes asset.

I’ve submitted a ticket for this that can be tracked here: https://issues.unrealengine.com/issue/UE-35451

Thank you!

Tim

Thanks Tim. Yeah in general I find simple tests are not enough. Things like this really need full-on production testing with characters.

Hope this and the other issues I have found get taken care of.

I’ve found that within Hooker_Eye_LenseShape and Hooker_Eye_BallShape there are faces made out of > 4 vertices, we sadly do not support triangulating N-gons. This causes an issue further down the road which I will address, but for now you can work around this by triangulating your Ngons.

Cheers,

Jurre