AlembicProject
ActivePublic

Properties

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, Aug 16

Jimmy Gunawan (enzyme69) added a comment to T51488: Alembic export animated vertex color exports only first frame vertex color.

I can confirm as for August 2017, no vertex color is exported with Alembic and kind of wish the vertex color can be baked for every frame. I tried using Sverchok, didn't work.

Wed, Aug 16, 1:32 PM · Alembic, BF Blender

Mon, Aug 14

Sybren A. Stüvel (sybren) closed T52274: importing multipule alembic files in python doesnt import all files. as "Resolved".

I'm closing this ticket now. If you need help building, check the Build Blender wiki section, or drop by on IRC in the #blendercoders channel.

Mon, Aug 14, 9:55 AM · BF Blender, Alembic

Sun, Aug 13

Sybren A. Stüvel (sybren) added a comment to T52274: importing multipule alembic files in python doesnt import all files..

You can build a recent Blender yourself, and compile against your version of glibc.

Sun, Aug 13, 7:21 PM · BF Blender, Alembic
levon hudson (levon) added a comment to T52274: importing multipule alembic files in python doesnt import all files..

Try passing as_background_job=False to the operator call. That'll import the files sequentially, which should solve your issue.

Sun, Aug 13, 1:58 PM · BF Blender, Alembic

Wed, Aug 9

Sybren A. Stüvel (sybren) closed T52240: Alembic Not Transferring Materials Per Frame as "Resolved" by committing rB45d7513f84bd: Fix T52240: Alembic Not Transferring Materials Per Frame.
Wed, Aug 9, 2:01 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T52240: Alembic Not Transferring Materials Per Frame.

I can confirm this as a bug.

Wed, Aug 9, 11:58 AM · Alembic, BF Blender

Tue, Aug 8

Bastien Montagne (mont29) closed T51701: Alembic cache screws up mesh as "Resolved" by committing rBb6d7cdd3cee9: Fix T51701: Alembic cache screws up mesh..
Tue, Aug 8, 6:22 PM · Import/Export, BF Blender, Alembic
Satish Goda (satishgoda) added a watcher for Alembic: Satish Goda (satishgoda).
Tue, Aug 8, 5:46 PM
Sybren A. Stüvel (sybren) moved T52274: importing multipule alembic files in python doesnt import all files. from Backlog to Waiting for feedback from OP on the Alembic board.
Tue, Aug 8, 5:40 PM · BF Blender, Alembic
Sybren A. Stüvel (sybren) added a comment to T51141: Crash when replacing an Alembic file while blender is open..

Seems to be an issue with Alembic itself. I've asked the alembic-discussion mailing list for help.

Tue, Aug 8, 4:32 PM · Alembic, Import/Export, BF Blender
Sybren A. Stüvel (sybren) added a comment to T52274: importing multipule alembic files in python doesnt import all files..

Try passing as_background_job=False to the operator call. That'll import the files sequentially, which should solve your issue.

Tue, Aug 8, 3:23 PM · BF Blender, Alembic
Bastien Montagne (mont29) assigned T52274: importing multipule alembic files in python doesnt import all files. to Sybren A. Stüvel (sybren).
Tue, Aug 8, 10:45 AM · BF Blender, Alembic

Sun, Aug 6

levon hudson (levon) edited the description of T52274: importing multipule alembic files in python doesnt import all files..
Sun, Aug 6, 1:02 PM · BF Blender, Alembic
levon hudson (levon) edited the description of T52274: importing multipule alembic files in python doesnt import all files..
Sun, Aug 6, 1:02 PM · BF Blender, Alembic
levon hudson (levon) created T52274: importing multipule alembic files in python doesnt import all files..
Sun, Aug 6, 1:01 PM · BF Blender, Alembic

Sat, Aug 5

Atomic (atomic) added a comment to T52240: Alembic Not Transferring Materials Per Frame.

I tried again at transferring a Houdini based animation to Blender via the Alembic file format. I discovered that if I actually give every Houdini object I want to transfer an attribute called name that Blender will create a Blender object for each Houdini object named. This solves the multiple material transfer problem I encountered previously as long as each object has only one material.

Sat, Aug 5, 8:21 PM · Alembic, BF Blender

Fri, Aug 4

levon hudson (levon) added a watcher for Alembic: levon hudson (levon).
Fri, Aug 4, 2:14 AM

Tue, Aug 1

Bastien Montagne (mont29) assigned T52240: Alembic Not Transferring Materials Per Frame to Sybren A. Stüvel (sybren).
Tue, Aug 1, 10:44 PM · Alembic, BF Blender
Vuk Gardašević (lijenstina) added a project to T52240: Alembic Not Transferring Materials Per Frame: Alembic.
Tue, Aug 1, 9:18 PM · Alembic, BF Blender
Lucas Boutrot (thornydre) added a watcher for Alembic: Lucas Boutrot (thornydre).
Tue, Aug 1, 5:09 PM

Tue, Jul 25

Sybren A. Stüvel (sybren) lowered the priority of T51141: Crash when replacing an Alembic file while blender is open. from "Confirmed" to "Low".

Unfortunately, no. It's a tricky one to get right, and there were more pressing issues to focus on first. It might actually be a problem with the Alembic library itself, but I'd need more time to investigate (and time is a scarce commodity). Fortunately there is a workaround (closing Blender while swapping around Alembic files), even though it's a cumbersome one.

Tue, Jul 25, 10:18 AM · Alembic, Import/Export, BF Blender

Jul 15 2017

Luciano Muñoz Sessarego (looch) added a comment to T51141: Crash when replacing an Alembic file while blender is open..

...sooooo.... not fixed yet?

Jul 15 2017, 10:08 AM · Alembic, Import/Export, BF Blender

Jul 11 2017

Bastien Montagne (mont29) closed T52028: Node's names limited to 63 characters ? as "Invalid".

Thanks for the report, but there is no bug here, indeed our datablock's names (and other data names, like node, modifiers etc.) are limited to 64 chars. Whether more is needed or not is not a topic for the tracker, general discussion and inquiries like that shall go through IRC (#blendercoders on freenode.net) or ML (bf-committers@blender.org).

Jul 11 2017, 7:17 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) closed T52030: InheritsTransform handling break the hierarchy as "Invalid".

What you want is impossible in Blender. There is no way for an object to have a parent but not inherit its matrix from it.

Jul 11 2017, 5:34 PM · Alembic, BF Blender
Maxime Robinot (maxime.robinot) assigned T52030: InheritsTransform handling break the hierarchy to Sybren A. Stüvel (sybren).
Jul 11 2017, 5:31 PM · Alembic, BF Blender
Maxime Robinot (maxime.robinot) created T52030: InheritsTransform handling break the hierarchy.
Jul 11 2017, 5:30 PM · Alembic, BF Blender
Maxime Robinot (maxime.robinot) created T52028: Node's names limited to 63 characters ?.
Jul 11 2017, 4:46 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) closed T52022: Inherits transform not taken into account as "Resolved" by committing rB32edfd53d978: Fix T52022 Alembic Inherits transform not taken into account.
Jul 11 2017, 4:18 PM · Alembic, BF Blender
Bastien Montagne (mont29) triaged T52022: Inherits transform not taken into account as "Normal" priority.
Jul 11 2017, 2:10 PM · Alembic, BF Blender
Bastien Montagne (mont29) assigned T52022: Inherits transform not taken into account to Sybren A. Stüvel (sybren).
Jul 11 2017, 2:10 PM · Alembic, BF Blender
Maxime Robinot (maxime.robinot) created T52022: Inherits transform not taken into account.
Jul 11 2017, 12:03 PM · Alembic, BF Blender

Jul 3 2017

Alexander Weide (alexgerman123) added a comment to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution.

when did i posted the error? when 2.78c was released. to say it is invalid.. is invalid. i dont know what have changed in that case in 2.79 ... by the way where is the download for 2.79? its not my job to test your software problems in every test build. i have to do other jobs. i want to make you aware of the problem,which is reproduceable nothing less or more. your job is too fix it. i ask myself why i spend money every month to help this development?. this thread is closed now from my standpoint.

Jul 3 2017, 5:35 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution.

The thing is that you say you tested this on Blender 2.78c. Since that version there have been many improvements in Alembic support. This means that a bug has to be reproducible with either 2.79-testbuild1 or a daily build. From what I can see here, it just works on a recent build of Blender.

Jul 3 2017, 5:23 PM · Alembic, BF Blender
Alexander Weide (alexgerman123) added a comment to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution.

hmm. i dont know which version you have but to mark it as invalid. instead of downloading the free houdini apprentice version and test it? sorry. was the last time that i tried to help. its reproduceable. guerillia renderer is no valid highend production enviroment!! my opinion! the problem is reproduceable in nuke and houdini. and fusion thanks for not willing to check it. thats all what i get from this. Goodbye. You lost a blender defender and my help.

Jul 3 2017, 5:15 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) closed T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution as "Invalid".

Can't reproduce on Blender rB1fb30758034c2f, there it exports a very large file (see attachment below) that is animated properly when viewed in Guerilla Render.

Jul 3 2017, 4:21 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) closed T51820: Alembic sequence Crash as "Resolved" by committing rB0900914d9644: Alembic: fix T51820 for sequence files not loading properly..
Jul 3 2017, 4:09 PM · Alembic, BF Blender

Jun 28 2017

Bastien Montagne (mont29) raised the priority of T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution from "Incomplete" to "Normal".
Jun 28 2017, 10:37 AM · Alembic, BF Blender

Jun 19 2017

Sybren A. Stüvel (sybren) added a comment to T51762: [alambic] Unit test script_alembic_import is failing..

@LazyDodo (LazyDodo) done.

Jun 19 2017, 5:57 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) changed the status of T51762: [alambic] Unit test script_alembic_import is failing. from "Invalid" to "Resolved" by committing rB81775e19203c: Fix T51762: Unit test script_alembic_import is failing..
Jun 19 2017, 5:56 PM · Alembic, BF Blender
LazyDodo (LazyDodo) added a comment to T51762: [alambic] Unit test script_alembic_import is failing..

Can we then disable this test until the legacy despgraph is no longer the default?

Jun 19 2017, 4:37 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T51701: Alembic cache screws up mesh.

I can confirm this bug. The root cause is that the Mesh Sequence Cache modifier adjusts the vertices of the mesh directly. You can see this when you view the mesh in Edit Mode; the mesh will be deformed, instead of in the rest position as expected by the Armature modifier.

Jun 19 2017, 12:23 PM · Import/Export, BF Blender, Alembic
Alexander Weide (alexgerman123) added a comment to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution.

I tested the export in Linux with 3.19 Kernel wich is recommented by the OS developer. Also tested with Kernel 4.0 and 4.4. The result is the same. I am working on 4.4.79 in general cause of hardware requirements.

Jun 19 2017, 12:06 PM · Alembic, BF Blender
Alexander Weide (alexgerman123) added a comment to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution.

So i tested alot at the weekend and i found out that the problem only occur with high amounts of polygones.

Jun 19 2017, 12:00 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) triaged T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution as "Incomplete" priority.
Jun 19 2017, 11:37 AM · Alembic, BF Blender
Sybren A. Stüvel (sybren) moved T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution from Backlog to Waiting for feedback from OP on the Alembic board.
Jun 19 2017, 11:35 AM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution.

Since I don't have Houdini, it'll be hard to test this out (the "free" version doesn't include Alembic support). I can try and investigate with some other software, though (abcview).
Please attach a simple example file that shows this issue.

Jun 19 2017, 11:17 AM · Alembic, BF Blender
Sybren A. Stüvel (sybren) closed T51762: [alambic] Unit test script_alembic_import is failing. as "Invalid".

Turns out this does happen on Linux too, but only if you enable the legacy depsgraph. I tested only with WITH_LEGACY_DEPSGRAPH:BOOL=OFF.
@Sergey Sharybin (sergey) and I agree that it's not worth it fixing this test for the old depsgraph.

Jun 19 2017, 11:15 AM · Alembic, BF Blender

Jun 18 2017

Vuk Gardašević (lijenstina) added a project to T51839: Blender 2.78c Animation Export Alembic Problem caused by Multiply UV' Sets and multiple Materials and Workaround Solution: Alembic.
Jun 18 2017, 8:28 PM · Alembic, BF Blender

Jun 16 2017

Bastien Montagne (mont29) triaged T51762: [alambic] Unit test script_alembic_import is failing. as "Confirmed" priority.
Jun 16 2017, 5:15 PM · Alembic, BF Blender
Bastien Montagne (mont29) assigned T51820: Alembic sequence Crash to Sybren A. Stüvel (sybren).

Please always attach files here, other places are not guaranteed to keep file around…

Jun 16 2017, 4:24 PM · Alembic, BF Blender