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Description

Alembic export & import support in Blender.

Join the discussion about Blender's Alembic support at T51195

More background information is collected on the wiki.

Recent Activity

Wed, Feb 20

Sybren A. Stüvel (sybren) added a comment to D2388: Cycles: initial work to support motion blur from Alembic caches..

So it's been a year since the last post in this thread. Still nothing? I really miss this feature.

Wed, Feb 20, 9:38 AM · Alembic

Fri, Feb 15

Maine (Maine) added a watcher for Alembic: Maine (Maine).
Fri, Feb 15, 9:27 AM
Mike Zet (mikez) added a comment to D2388: Cycles: initial work to support motion blur from Alembic caches..

So it's been a year since the last post in this thread. Still nothing? I really miss this feature.

Fri, Feb 15, 5:50 AM · Alembic

Sun, Feb 10

Dawid Huczyński (tibicen) added a watcher for Alembic: Dawid Huczyński (tibicen).
Sun, Feb 10, 1:05 AM

Thu, Feb 7

Santeri Holm (Santerho) added a comment to T56792: Alembic doesn't export custom normals correctly.

This bug still seems to exist and is really getting in the way of our company pipeline.
I did some digging and seems like blenders vertex normals are exported to point normals

Thu, Feb 7, 5:10 PM · Import/Export, Alembic, BF Blender

Tue, Jan 29

Irfan Celik (irfan) added a comment to T53745: Blender writes .abc color information wrong.

I created one here https://developer.blender.org/T60977

Tue, Jan 29, 1:29 PM · Alembic, BF Blender
Brecht Van Lommel (brecht) added a comment to T53745: Blender writes .abc color information wrong.

It's best to create a new bug report, with all the required information and .blend / .abc file to reproduce the issue.

Tue, Jan 29, 12:31 PM · Alembic, BF Blender

Mon, Jan 28

Irfan Celik (irfan) added a comment to T53745: Blender writes .abc color information wrong.

Could someone test this again in Maya?
I dont seem to get any vertex color info into Maya here even though re importing the abc back into blender does work.
Tested it myself here using the daily builds of blender 2.8, official 2.79 and daily 2.79.

Mon, Jan 28, 2:13 PM · Alembic, BF Blender

Jan 16 2019

Sybren A. Stüvel (sybren) closed T60503: Curves to Alembic problems as Resolved.
Jan 16 2019, 11:09 AM · Blender Studio, Alembic, BF Blender

Jan 15 2019

Sybren A. Stüvel (sybren) added a comment to T60503: Curves to Alembic problems.

The curve loses its Geometry settings. In the example file the curves have depth and a full Fill Mode to them but once imported they switch back to the default settings of newly created curves.
The curve type is switched to paths instead of bezier.

Jan 15 2019, 11:34 AM · Blender Studio, Alembic, BF Blender
Julien Kaspar (JulienKaspar) added a comment to T60503: Curves to Alembic problems.

I think the best solution for the studio right now would be to have the option to export curves as meshes like already mentioned here: T51311

Jan 15 2019, 11:23 AM · Blender Studio, Alembic, BF Blender

Jan 14 2019

Brecht Van Lommel (brecht) closed D4137: Alembic fix T59164: Only run in background when INVOKE'd.

Already committed in rB196a5116aa2f: Fix T59164: Run Alembic in background when INVOKE'd.

Jan 14 2019, 5:34 PM · Alembic
Jacques Lucke (JacquesLucke) triaged T60503: Curves to Alembic problems as Confirmed, Medium priority.
Jan 14 2019, 3:25 PM · Blender Studio, Alembic, BF Blender
Julien Kaspar (JulienKaspar) assigned T60503: Curves to Alembic problems to Sybren A. Stüvel (sybren).
Jan 14 2019, 2:27 PM · Blender Studio, Alembic, BF Blender
Julien Kaspar (JulienKaspar) added a project to T60503: Curves to Alembic problems: Blender Studio.
Jan 14 2019, 2:26 PM · Blender Studio, Alembic, BF Blender
Julien Kaspar (JulienKaspar) created T60503: Curves to Alembic problems.
Jan 14 2019, 2:25 PM · Blender Studio, Alembic, BF Blender

Dec 28 2018

Sybren A. Stüvel (sybren) closed T57078: Blender crashes while playing Alembic animation as Resolved by committing rBa7c5f4f20657: Fix T57078: Alembic curve import: better check for topology similarity.
Dec 28 2018, 6:07 PM · BF Blender, Alembic
Sybren A. Stüvel (sybren) closed T57377: Alembic animated content import as Resolved.

MarkScene.ABC is hardly a minimal test file, it has over 5000 objects in it. Also, there are objects named ?????????#56_002, which to me indicates that there are more things wrong with this file.

Dec 28 2018, 4:56 PM · Alembic, BF Blender
Brecht Van Lommel (brecht) accepted D4137: Alembic fix T59164: Only run in background when INVOKE'd.
Dec 28 2018, 4:15 PM · Alembic
Sybren A. Stüvel (sybren) created D4137: Alembic fix T59164: Only run in background when INVOKE'd.
Dec 28 2018, 4:04 PM · Alembic

Dec 7 2018

Brecht Van Lommel (brecht) closed D4006: Correctly merge uvs before exporting to alembic.
Dec 7 2018, 12:23 AM · Alembic
Brecht Van Lommel (brecht) accepted D4006: Correctly merge uvs before exporting to alembic.

This is more complicated than it needs to be, there is no need for UV hashing if we are going to compare them directly.

Dec 7 2018, 12:22 AM · Alembic

Dec 3 2018

Maxime Robinot (maxime.robinot) added inline comments to D4006: Correctly merge uvs before exporting to alembic.
Dec 3 2018, 5:59 PM · Alembic
Maxime Robinot (maxime.robinot) updated the diff for D4006: Correctly merge uvs before exporting to alembic.
Dec 3 2018, 5:55 PM · Alembic

Nov 30 2018

Kévin Dietrich (kevindietrich) added inline comments to D4006: Correctly merge uvs before exporting to alembic.
Nov 30 2018, 5:29 PM · Alembic
Brecht Van Lommel (brecht) added inline comments to D4006: Correctly merge uvs before exporting to alembic.
Nov 30 2018, 3:17 PM · Alembic
Maxime Robinot (maxime.robinot) added inline comments to D4006: Correctly merge uvs before exporting to alembic.
Nov 30 2018, 12:13 PM · Alembic
Sybren A. Stüvel (sybren) added inline comments to D4006: Correctly merge uvs before exporting to alembic.
Nov 30 2018, 10:23 AM · Alembic
Sybren A. Stüvel (sybren) requested changes to D4006: Correctly merge uvs before exporting to alembic.
Nov 30 2018, 10:22 AM · Alembic
Maxime Robinot (maxime.robinot) updated the diff for D4006: Correctly merge uvs before exporting to alembic.
Nov 30 2018, 9:38 AM · Alembic

Nov 29 2018

Brecht Van Lommel (brecht) requested changes to D4006: Correctly merge uvs before exporting to alembic.

This patch appears to be against an old version of the code, please update it to latest master.

Nov 29 2018, 9:38 PM · Alembic
Kévin Dietrich (kevindietrich) added a project to D4006: Correctly merge uvs before exporting to alembic: Alembic.

@Sybren A. Stüvel (sybren), could you look into this? I have neither the Blender sources nor my Alembic files on my computer at the moment. Overall, apart from some style issues it looks good to me.

Nov 29 2018, 9:00 PM · Alembic

Nov 19 2018

Brecht Van Lommel (brecht) removed a project from T54690: Alembic design notes: Code Quest.
Nov 19 2018, 12:58 PM · Alembic

Nov 15 2018

Philipp Oeser (lichtwerk) closed T57824: Alembic Sequence Crash as Resolved.

OKi, closing then

Nov 15 2018, 9:14 AM · Alembic, BF Blender: 2.8
Christophe Leyder (shotalot) added a comment to T57824: Alembic Sequence Crash.

You can close this, I contacted SideFX, its a bug in the Houdini exporter and not Blender. Apologies for any time wasted

Nov 15 2018, 7:21 AM · Alembic, BF Blender: 2.8

Nov 14 2018

Philipp Oeser (lichtwerk) assigned T57824: Alembic Sequence Crash to Sybren A. Stüvel (sybren).

Hm, seems I cant reproduce (a crash).
[Same for 2.79 master and 2.79b btw.]

Nov 14 2018, 2:59 PM · Alembic, BF Blender: 2.8
Philipp Oeser (lichtwerk) assigned T57377: Alembic animated content import to Sybren A. Stüvel (sybren).

@Sybren A. Stüvel (sybren) : mind having a look?

Nov 14 2018, 2:54 PM · Alembic, BF Blender
Philipp Oeser (lichtwerk) raised the priority of T57824: Alembic Sequence Crash from Needs Information from User to Needs Triage by Developer.
Nov 14 2018, 12:50 PM · Alembic, BF Blender: 2.8
Christophe Leyder (shotalot) added a comment to T57824: Alembic Sequence Crash.

I have attached a simplified .abc that is still able to reproduce the crash.

Nov 14 2018, 11:04 AM · Alembic, BF Blender: 2.8
Philipp Oeser (lichtwerk) triaged T57824: Alembic Sequence Crash as Needs Information from User priority.

Please try to reproduce with something you can share publicly.
(there might be multiple people involved in such a report and exchanging assets between all those persons via mail is just not practical).

Nov 14 2018, 10:37 AM · Alembic, BF Blender: 2.8
Christophe Leyder (shotalot) created T57824: Alembic Sequence Crash.
Nov 14 2018, 10:28 AM · Alembic, BF Blender: 2.8

Oct 29 2018

Philipp Oeser (lichtwerk) raised the priority of T57377: Alembic animated content import from Needs Information from User to Confirmed, Medium.

We are seeing a couple of issues here (possibly we'll be splitting these in distinct reports if neccessary):

Oct 29 2018, 1:41 PM · Alembic, BF Blender
Philipp Oeser (lichtwerk) added a revision to T57377: Alembic animated content import: D3847: Fix crash importing alembic with mcol indices out of bounds.
Oct 29 2018, 1:38 PM · Alembic, BF Blender
danny austin (dannysetvisions) added a comment to T57377: Alembic animated content import.

Attached is a scene from 3ds max with no animation exported as Alembic. Blender 2.8 crashes when I import this.

Oct 29 2018, 11:21 AM · Alembic, BF Blender

Oct 26 2018

danny austin (dannysetvisions) added a comment to T57377: Alembic animated content import.


file uploaded

Oct 26 2018, 3:09 PM · Alembic, BF Blender
Philipp Oeser (lichtwerk) added a comment to T57377: Alembic animated content import.

we need the updated .abc as well...

Oct 26 2018, 11:43 AM · Alembic, BF Blender
danny austin (dannysetvisions) added a comment to T57377: Alembic animated content import.

Hi,
I have done a lower resolution test with the same track animation for the camera.
Interestingly, the camera is not animated in the ABC file.. That being said, it no longer crashed. Files attached

Oct 26 2018, 11:06 AM · Alembic, BF Blender
Philipp Oeser (lichtwerk) added a comment to T54050: Camera focal length animation not importing.

@Jesse (FreakTheMighty) : cant reproduce.
in 2.79, the provided FBX wont import Focal Length [but that is expected since rBAb890f0d7e8a6 isnt included]
in 2.79b (or onwards), the provided FBX will import Focal Length [bunch of keyframes, but all very similar -- around 8.1/8.2mm]

Oct 26 2018, 9:49 AM · Addons, Alembic, Import/Export, BF Blender
Philipp Oeser (lichtwerk) added projects to T57078: Blender crashes while playing Alembic animation: Alembic, BF Blender.

crashes in 2.79 as well

Oct 26 2018, 9:36 AM · BF Blender, Alembic

Oct 25 2018

Philipp Oeser (lichtwerk) added a comment to T57377: Alembic animated content import.

There seems to be a curve in the .abc as well (Circle.001)?

Oct 25 2018, 9:55 PM · Alembic, BF Blender