Forums Houdini Indie and Apprentice Broken Alembic export on H16?

Broken Alembic export on H16?

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Jirka Pop2
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Hi,

i think that abc export is broken, UVs are missing. Simle reproduction, create a box, apply uv unwrap and do abc export.
H15.5.717 works fine, also file size is almost 2x greater.

Is it a known issue?

thanks

jipo
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chrism
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Psst…..https://www.sidefx.com/forum/topic/15604/ [sidefx.com]
Chris McSpurren
Senior Quality Assurance Specialist
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neil_math_comp
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It seems to work for me. When I import the geometry again and unpack it, there's a vertex uv attribute with the expected values. How are you checking the abc file?
Writing code for fun and profit since... 2005? Wow, I'm getting old.
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Jirka Pop2
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chrism: i am sorry, i wil do it next time:-)

ndickson: at first, i was not able to import UVs to Unreal. so i tried it in the older version and everything works fine. so i compared .abc files,size is different and also if I view it in the text editor, i cant find “uv” string in it (attribute names are plain text in the binary)
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neil_math_comp
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Could you post a HIP file and the ABC files? For me, the ABC file is 2686 bytes in H15.5 and 2702 bytes in H16.0. Does the H16 file attached import okay for you?

Attachments:
BoxWithUVs_h16.abc (2.6 KB)
BoxWithUVs_h15_5.abc (2.6 KB)

Writing code for fun and profit since... 2005? Wow, I'm getting old.
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Jirka Pop2
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your files work fine, attached are mine. repost, wrong files were attached….

Attachments:
box_new3.abc (1.5 KB)
box_old.abc (2.1 KB)
problem.hipnc (122.8 KB)

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anon_user_37409885
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Can non-commerical Houdini write .abc? It's not meant to.
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Jirka Pop2
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as far as I know, scene export is disabled, but file node always workef for me
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neil_math_comp
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Either way, the bug seems to be a bug in commercial Houdini too, when using a File SOP set to Write Files, a Geometry ROP, or RMB > Save > Geometry and specifying an abc filename, so I'll file a bug with specific info on how to reproduce the problem. Full Alembic scene export seems to work correctly, but that's disabled in Apprentice, and sometimes, people do want to use Alembic as a geometry file format instead of a scene file format. (People have also requested similar support for FBX.)
Writing code for fun and profit since... 2005? Wow, I'm getting old.
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Jirka Pop2
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I really hoped that I am doing something wrong and there is some single parameter medicine:-)
If there is some workaround for us, learning to use Houdini+Unreal, let me know…

Thanks for Your time and help
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ayansingh12358
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why my houdini 16- fbx and alembin expot is disable
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neil_math_comp
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Oh, it looks like this was probably fixed in Houdini 16.0.535 on March 1st. Sorry for not pinging this thread earlier!
Writing code for fun and profit since... 2005? Wow, I'm getting old.
https://www.youtube.com/channel/UC_HFmdvpe9U2G3OMNViKMEQ [www.youtube.com]
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