Problem summary Users have found some Alembics/OBJ files imported into Nuke through the ReadGeo node come in with incorrect UV values.
Importing of OBJ's from Houdini, set the UV coordinates to 1,1 inside the 3D Nuke Viewer.
Importing of Alembics from Houdini, bring in the correct size UV, but are flipped.
Screenshot Reference:
Tests in Katana confirm the UV is inverted, as Katana's Alembic UV import appears to be correct:
Customer reported version 11.2__11.2v4
Customer reported platform windows10
Steps to reproduce
1) Export Cube Alembic/OBJ from Houdini
2) Open Nuke
3) Create a ColorBars Node
3) Under the ColorBars node, create a ReadGeo Node and import the Cube file
Result: The imported cube's UVs will be flipped in comparison to other 3D programs.
Workaround Unknown.
Reproduced by support
This bug has been reproduced in: Nuke11.2v4 - Windows 7 - Mac10.13 - CentOS6.9 Nuke11.2v1 - Windows 7 Nuke11.1v4 - Windows 7 Nuke11.1v1 - Windows 7 Nuke11.0v4 - Windows 7 Nuke11.0v1 - Windows 7 Nuke10.5v7 - Windows 7 - Mac10.13 - CentOS6.9 Nuke10.5v1 - Windows 7 Nuke10.0v6 - Windows 7 Nuke10.0v1 - Windows 7 Nuke9.0v9 - Windows 7 Nuke9.0v1 - Windows 7 Nuke8.0v7 - Windows 7 Nuke7.0v10 - Windows 7 - Mac10.13 - CentOS6.9
Earliest version tested - This issue appears to be in all versions of the product
Expected behaviour UV formats should not change when importing from another program
Actual behaviour UV format is different to model before export