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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

Tue, Jun 18

Sybren A. Stüvel (sybren) added a project to T65901: Alembic crash: Alembic.
Tue, Jun 18, 3:40 PM · Alembic, BF Blender

Fri, Jun 14

Brecht Van Lommel (brecht) added a comment to T51351: Export procedual mesh animation with alembic.

Please create a new report.

Fri, Jun 14, 10:27 AM · Alembic, BF Blender
Ryan G (rlguy) added a comment to T51351: Export procedual mesh animation with alembic.

I have encountered an issue similar to this in the FLIP Fluids addon using Blender 2.80 (hash 5e626e766459, June 13th 2019). The FLIP Fluids addon updates fluid mesh geometry in the frame_change_pre handler.

Fri, Jun 14, 12:05 AM · Alembic, BF Blender

Tue, Jun 11

Philipp Oeser (lichtwerk) renamed T65717: Alembic (camera - also mesh) import scale issue from Alembic camera import scale issue to Alembic (camera - also mesh) import scale issue.
Tue, Jun 11, 2:41 PM · Alembic, BF Blender
Philipp Oeser (lichtwerk) assigned T65717: Alembic (camera - also mesh) import scale issue to Sybren A. Stüvel (sybren).

Looks like the (camera) origin is actually correctly scaling with the setting, drawing the camera however fails [stays in original position].
For meshes, this is similar: the selection outline will not scale with the setting the actual polysoup will...
Guess this is CoW-related?
(also getting assert BLI_assert failed: /blender/source/blender/blenkernel/intern/cachefile.c:103, BKE_cachefile_reader_free(), at 'cache_file->id.tag & LIB_TAG_COPIED_ON_WRITE' exiting blender after importing...)

Tue, Jun 11, 2:41 PM · Alembic, BF Blender
Elias Kremer (ekremer) added a project to T65717: Alembic (camera - also mesh) import scale issue: Alembic.
Tue, Jun 11, 2:26 PM · Alembic, BF Blender

May 19 2019

Yegor (Yegor) added a comment to T49234: Alembic Import issues.

@Kévin Dietrich (kevindietrich) Glad you came back! Could you please update your patch D2388 for the current code, so we could review and make it to the master finally, cause it's very important for fluid rendering.
If there's something I can assist with, let me know. I'm not a coder anymore, but maybe a can help.

May 19 2019, 11:29 PM · Alembic, Cycles, Import/Export, BF Blender

May 17 2019

Thomas Volkmann (knekke) added a comment to T49234: Alembic Import issues.

Also I am having problems with sequences again: https://developer.blender.org/T51820

May 17 2019, 5:12 PM · Alembic, Cycles, Import/Export, BF Blender
Philipp Oeser (lichtwerk) added a comment to T49234: Alembic Import issues.

@Kévin Dietrich (kevindietrich) : thx for getting back! will read those...
Also note that T54050 is the same thing...

May 17 2019, 4:51 PM · Alembic, Cycles, Import/Export, BF Blender
Kévin Dietrich (kevindietrich) added a comment to T49234: Alembic Import issues.

I am not working on this anymore, although I could resume work. This approach was suggested to me by Campbell as a general way to import custom keyframes from alembic archives. The patch was uploaded for review a few years ago: D2324.

May 17 2019, 4:37 PM · Alembic, Cycles, Import/Export, BF Blender
Sybren A. Stüvel (sybren) added a comment to T49234: Alembic Import issues.

I think the approach is pretty nice, as it'll give us a way forward to animate other properties as well.

May 17 2019, 4:03 PM · Alembic, Cycles, Import/Export, BF Blender
Philipp Oeser (lichtwerk) added a comment to T49234: Alembic Import issues.

@Sybren A. Stüvel (sybren): yep, not for 2.80, but this is the way to go, right? [having a cache-fcurve-modifier]
Or is there another possibility [from the design point of view]?

May 17 2019, 4:02 PM · Alembic, Cycles, Import/Export, BF Blender
Sybren A. Stüvel (sybren) added a comment to T49234: Alembic Import issues.

@Philipp Oeser (lichtwerk) it looks interesting, but too big a feature to put into master for 2.80.

May 17 2019, 3:56 PM · Alembic, Cycles, Import/Export, BF Blender
Philipp Oeser (lichtwerk) updated subscribers of T49234: Alembic Import issues.

Just wanted to check the status on the import-of-animated-camera-focal-length issue:

May 17 2019, 3:15 PM · Alembic, Cycles, Import/Export, BF Blender

May 2 2019

martin Naydenski (martinium) added a comment to T56792: Alembic doesn't export custom normals correctly.

Yes seems like we have the same problem with Alembic export. FBX or obj export works correctly but Alembic doesn't.

May 2 2019, 1:37 PM · Import/Export, Alembic, BF Blender

Apr 26 2019

Libor Batek (lbatek) added a comment to T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache.

I ve tested to render animation with mblur and hair on alembic cache and there is some problems too....not sure if it corelates to the above mentioned problems or its kind of new problem.

Apr 26 2019, 9:29 AM · Alembic, BF Blender

Apr 18 2019

Serj Maiorov (printerkiller) added a comment to T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache.

Have the same problem, here is a side by side basic test

Apr 18 2019, 12:56 PM · Alembic, BF Blender

Apr 17 2019

Serj Maiorov (printerkiller) added a comment to T63654: Alembic - Aplly scale doesn't work with the Mesh Sequence and hair.

Is there an alternative to that workflow? Because we use real world scales to be consistent with lighting and materials over live footages. How can we interchange hair between Alembics and still maintain real scales?

Apr 17 2019, 9:33 AM · Alembic, BF Blender

Apr 16 2019

Serj Maiorov (printerkiller) added a comment to T63654: Alembic - Aplly scale doesn't work with the Mesh Sequence and hair.

Tried to do that but it still breaks the hair

Apr 16 2019, 3:47 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T63654: Alembic - Aplly scale doesn't work with the Mesh Sequence and hair.

Applying scale is not supported. This changes the mesh data, which is replaced with the data from Alembic. Try creating an Empty, set it as the parent of the imported Alembic object, and scale the Empty.

Apr 16 2019, 3:19 PM · Alembic, BF Blender
Wybren van Keulen (wybren) added a comment to T53745: Blender writes .abc color information wrong.

Hi Atomic and Sybren,

Apr 16 2019, 2:32 PM · Alembic, BF Blender
Sebastian Parborg (zeddb) assigned T63654: Alembic - Aplly scale doesn't work with the Mesh Sequence and hair to Sybren A. Stüvel (sybren).

Unsure if applying scale is supported for sequence caches. @Sybren A. Stüvel (sybren) any input on this?

Apr 16 2019, 2:00 PM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T53745: Blender writes .abc color information wrong.

I tried the Tree.abc file in Houdini 17.0 and it does not work. When I unpack the data, I can see that a 4 float vector is written, but that is wrong, it should be only a 3 float vector.

Apr 16 2019, 11:02 AM · Alembic, BF Blender
Serj Maiorov (printerkiller) renamed T63654: Alembic - Aplly scale doesn't work with the Mesh Sequence and hair from Alembic - Aplly scale doesn't work with the Mesh Sequence to Alembic - Aplly scale doesn't work with the Mesh Sequence and hair.
Apr 16 2019, 10:40 AM · Alembic, BF Blender

Apr 15 2019

Atomic (atomic) added a comment to T53745: Blender writes .abc color information wrong.

I tried the Tree.abc file in Houdini 17.0 and it does not work. When I unpack the data, I can see that a 4 float vector is written, but that is wrong, it should be only a 3 float vector. Even when I promote (or wrangle) the data into an attribute @Cd, that the viewport expects, all the data is zero (i.e. black).

Apr 15 2019, 10:21 PM · Alembic, BF Blender
Libor Batek (lbatek) added a comment to T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache.

@Sybren A. Stüvel (sybren) ok, sorry not doing it before....should be done right now

Apr 15 2019, 10:50 AM · Alembic, BF Blender
Libor Batek (lbatek) updated the task description for T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache.
Apr 15 2019, 10:49 AM · Alembic, BF Blender
Sybren A. Stüvel (sybren) added a comment to T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache.

@Libor Batek (lbatek) please put the description of the issue in this task, instead of hiding it in a ZIP file. Hiding it like this makes it invisible to the search engine, and makes it harder for developers to access as well.

Apr 15 2019, 10:25 AM · Alembic, BF Blender

Apr 12 2019

Philipp Oeser (lichtwerk) assigned T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache to Sybren A. Stüvel (sybren).

Confirmed on first sight
(Looks like 2.79 has a similiar issue even)

Apr 12 2019, 3:36 PM · Alembic, BF Blender
Philipp Oeser (lichtwerk) added a project to T63534: Child hair particles set to "Interpolated" causes jittering when groom on alembic cache: Alembic.
Apr 12 2019, 3:28 PM · Alembic, BF Blender

Mar 31 2019

Sebastian Parborg (zeddb) added a comment to T63141: Alembic Sequences Do Not Play Back When Scrubbing The Timeline, Crashes Often.

Just edit the task description of the other task if you want to add your findings.

Mar 31 2019, 2:20 PM · Alembic, BF Blender
Sebastian Parborg (zeddb) merged task T63141: Alembic Sequences Do Not Play Back When Scrubbing The Timeline, Crashes Often into T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work.
Mar 31 2019, 2:19 PM · Alembic, BF Blender

Mar 30 2019

Jared Herman (Aternias) added a project to T63141: Alembic Sequences Do Not Play Back When Scrubbing The Timeline, Crashes Often: Alembic.
Mar 30 2019, 11:23 PM · Alembic, BF Blender

Mar 28 2019

Vasil (FeralMan) added a comment to T60977: Alembic vertex color export does not work in maya.

Yeah, Bastien. In my case, I found the solution with FBX export.

Mar 28 2019, 12:04 PM · Alembic, BF Blender
Bastien Montagne (mont29) added a comment to T60977: Alembic vertex color export does not work in maya.

Note that FBX should also be able to export vertex color data?

Mar 28 2019, 11:41 AM · Alembic, BF Blender
Sebastian Parborg (zeddb) added a comment to T60977: Alembic vertex color export does not work in maya.

Not yet

Mar 28 2019, 11:07 AM · Alembic, BF Blender

Mar 27 2019

Philipp Oeser (lichtwerk) added a comment to T62980: Animated ABC Won't Collide With Fluid Simulation.

Havent actually checked it, and it feels like swapping mesh datablocks in a framechange handler is not the best solution, but would it help getting the evaluated object?

Mar 27 2019, 10:10 PM · Physics, Alembic, BF Blender
Vasil (FeralMan) added a comment to T60977: Alembic vertex color export does not work in maya.

Hi guys. Just found this bug in Blender. And searching brings me here.
I tried to export vertex color from Blender to Maya. Alembic the only format I found to have "vertex color".
And it's doesn't work. Maya can't see the color.

Mar 27 2019, 2:31 PM · Alembic, BF Blender
Atomic (atomic) added a comment to T62980: Animated ABC Won't Collide With Fluid Simulation.

So why can't I fetch the mesh data block, from the .abc animation, in a frame change?
Shouldn't the Mesh Sequence Cache modifier correctly present the current mesh data block, to the API, for the frame it is displaying?
Why does the frame change code fail?

Mar 27 2019, 1:55 PM · Physics, Alembic, BF Blender
Philipp Oeser (lichtwerk) added projects to T62980: Animated ABC Won't Collide With Fluid Simulation: Alembic, Physics.
Mar 27 2019, 11:23 AM · Physics, Alembic, BF Blender

Mar 21 2019

Sebastian Parborg (zeddb) triaged T60977: Alembic vertex color export does not work in maya as Normal priority.
Mar 21 2019, 12:35 PM · Alembic, BF Blender

Mar 20 2019

Sergey Sharybin (sergey) closed T56778: Alembic Override Frame does not update on playback. as Resolved by committing rB2f4bd632396c: Fix T56778: Alembic Override Frame does not update on playback.
Mar 20 2019, 4:49 PM · BF Blender, Dependency Graph, Alembic

Mar 19 2019

Christophe Leyder (shotalot) added a comment to T50725: Alembic export doesn't take 'Custom Properties', as alembic non-standard data..

Any news on this? This is a big one in terms of alembic for studios considering using it in thier pipeline, I will be more than willing to supply production example files in email, this will be for alembics exported from houdini specifically.

Mar 19 2019, 2:35 PM · Alembic, Import/Export, BF Blender
Sybren A. Stüvel (sybren) added a project to T60977: Alembic vertex color export does not work in maya: Alembic.
Mar 19 2019, 9:37 AM · Alembic, BF Blender
Jared Herman (Aternias) renamed T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work from Most Of The Time Importing Alembic Mesh Causes Blender To Hard Crash As Well As Playback Of Sequence. to Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences..
Mar 19 2019, 7:37 AM · BF Blender

Mar 18 2019

Jared Herman (Aternias) updated the task description for T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work.
Mar 18 2019, 9:34 PM · BF Blender
Jared Herman (Aternias) updated the task description for T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work.
Mar 18 2019, 9:34 PM · BF Blender
Jared Herman (Aternias) updated the task description for T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work.
Mar 18 2019, 9:21 PM · BF Blender
Jared Herman (Aternias) updated the task description for T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work.
Mar 18 2019, 9:21 PM · BF Blender
Jared Herman (Aternias) updated the task description for T62720: Importing Alembic Mesh Causes Blender To Crash As Well As Alembic Sequences/Playback of Alembic sequences does not work.
Mar 18 2019, 8:04 PM · BF Blender