Qwertzus Posted March 30, 2017 Share Posted March 30, 2017 Hi! did anyone experience the same issue? I imported an Alembic file with different face IDs to Houdini. But when I export it back via Alembic just for testing the ID grouping is basically right, but they don't have the correct order/ID… , they are randomly distributed. I cannot see any pattern. It's neither alphabetically nor based on face count. My node tree consists of: Alembic Import Node –> ROP Alembic Output. On the left side you see the original mesh with correct Material ID order and on the right side the imported Mesh with the wrong material order. Does anyone has a solution for this? Thanks in advance! Quote Link to comment Share on other sites More sharing options...
Atom Posted March 30, 2017 Share Posted March 30, 2017 Have you tried activating Build Hierarchy From Attribute or tried the other Partition modes? Quote Link to comment Share on other sites More sharing options...
Qwertzus Posted March 30, 2017 Author Share Posted March 30, 2017 Thank you very much for your answer! Yes I have tried this but no difference. I also tried renaming the materials in Max _0,_1,_2,_3, ... (relating to those video comments: https://vimeo.com/album/4473536/video/113366813) but without succes. Maybe I have to do something with the prim groups that Houdini is importing from Alembic Face Sets? Because they have the right order and the correctly selected faces. But I don't know how to handle them in order to export them correctly: Quote Link to comment Share on other sites More sharing options...
Qwertzus Posted March 31, 2017 Author Share Posted March 31, 2017 (edited) Bottom = Original Top = Alembic Export I made a test with some primitives. If I stay under 9 IDs, everything is okay. But when I have more it will mix them up... Edited March 31, 2017 by Qwertzus Quote Link to comment Share on other sites More sharing options...
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