Changelog#

[209.0.0] - 2026-02-23#

  • [CAD Converter] Improved and expanded the advanced converter options UI with better organization and more configurable parameters exposed directly in the interface.

  • [CAD Converter] Added performance metrics logging to track conversion timing profiling and diagnostics.

  • [CAD Converter] Added HTTP endpoints to omni.services.convert.asset and omni.services.convert.cad for programmatic conversion management. Updated Overview.md documentation with endpoint paths, response codes, JSON formats, status values, and environment variables.

  • [CAD Converter] Conversion log files now use unique names per job to prevent overwrites during concurrent conversions.

  • [CAD Converter] Renamed DiagnosticLogConsumer to BackendLogConsumer and added CoreExtLogConsumer to capture and surface log output from core extensions running in subprocesses.

  • [DGN Converter] Updated ODA Kernel and Drawings SDKs to version 27.1.

  • [HOOPS Converter] Added support for JT Active Layer Filtering to control visibility of hidden geometry. This resolves the known issue where hidden elements in JT models could incorrectly appear as visible in converted output

  • [HOOPS Converter] Updated HOOPS Exchange SDK to version 2026.1.

  • [HOOPS Converter] Skip suppressed product occurrences during conversion.

[208.0.3] - 2026-01-05#

  • [CAD Converter] Updated usdex-2.2 flavor to OpenUSD Exchange 2.2.0

  • [DGN Converter] Update DGN Converter backend library; logging updates.

[208.0.2] - 2025-12-23#

  • [CAD Converter] Fixed an issue where the conversion subprocess could block the main Kit thread when using the omni.services.convert.cad extension.

[208.0.1] - 2025-12-18#

  • [CAD Converter] Added Kit 110.x flavor using USD 25.11

  • [CAD Converter] Update omni.usdex.libs to version ~2.2 for Kit 110.x builds

  • Define config and python writeTarget parameters in the extension.toml file.

[208.0.0] - 2025-12-17#

  • [CAD Converter] Add DiagnosticLogConsumer to parse status, warn, and error logs from backend converter libraries

  • [JT Converter] Publish codeless JT Converter extensions for ARM64 platforms

  • [CAD Converter] Specify platform as a write target in extension.toml

[207.0.8] - 2025-12-15#

  • [CAD Converter] Update omni.kit.converter.dgn_core documentation

[207.0.7] - 2025-12-08#

  • [DGN Converter] Update ODA Drawings SDK and Kernel SDK to 26.11

  • [DGN Converter] Support ACIS based smart solid elements

  • [DGN Converter] BSplineSurface elements are translated to Mesh prims

[207.0.6] - 2025-12-05#

  • [CAD Converter] Explicitly specify platform for linux-aarch64 JT extensions packages

[207.0.5] - 2025-11-19#

  • [DGN Converter] Added new options for controlling mesh triangulation

  • [DGN Converter] Introduced an option to exclude hidden levels during conversion

  • [HOOPS Converter] Updated HOOPS Exchange SDK to 2025.8.0

[207.0.4] - 2025-11-12#

  • [DGN/HOOPS/JT Converter] Updated usdex-2.1 flavor to OpenUSD Exchange 2.1.0

  • [HOOPS Converter] Update to HOOPS Exchange 2025.7

  • [HOOPS Converter] Reduced time taken to compute centroid of geometry

[207.0.3] - 2025-11-06#

  • [CAD Converter] Include imported cache path in extension search path when converting through Kit sub-process

[207.0.2] - 2025-11-05#

  • [CAD Converter] Bump dependency versions

[207.0.1] - 2025-11-04#

  • [DGN Converter] Fixed Shared Cell incorrect transforms

[207.0.0] - 2025-10-22#

  • [CAD Converter] Removed sample code and utility functions related to NVCF integration

  • [CAD Converter] Use filter to remove JT related extensions on linux-aarch64 platform

  • [HOOPS Converter] Add up-axis conversion parameter option

  • [DGN Converter] Update ODA Drawings SDK and Kernel SDK to 26.9

  • [DGN Converter] Add option to enable or disable authoring element IDs

  • [DGN Converter] Add option to set geometry attribute style

    • eNone: Don’t author geometry attributes

    • eAttribute : Author as custom attribute

    • ePrimvar : Author as a constant primvar

[206.0.1] - 2025-10-06#

  • [CAD Converter] Added linux-aarch64 support.

  • [CAD Converter] Update omni.usdex.libs to version ~2.1 for Kit 109.x builds

  • [CAD Converter] Made JT conversion go through HOOPS Converter on linux-aarch64 since JT Converter isn’t supported on linux-aarch64

[206.0.0] - 2025-10-03#

  • [DGN/HOOPS/JT Converter] Add priority-based converter selection to improve UI ranking (DGN files now default to DGN Converter, JT files to JT Converter in selection dropdown)

  • [DGN Converter] Removed internal limits on the surfaceTolerance option, allowing users to specify the full range supported by ODA. The iTessLOD parameter was removed to avoid conflicts and enable unlimited tolerance values.

  • [HOOPS Converter] Apply translation to geometry Prims to place them at the centroid of the Part/Rep. Item

  • [HOOPS Converter] Fixed setting of display names

  • [HOOPS Converter] Correctly author prim and display names for top-level Product Occurence

  • [CAD Converter] Fixed _unregister_importer() to unregister each registered converter delegate

  • [CAD Converter] Fixed a bug where the extensions failed to extract correct conversion result

  • [CAD Converter] Provide more detailed logging on conversion failures

[205.0.0] - 2025-08-21#

  • [DGN Converter] Add support for MergedAttributeStyle.ePrimvar in Parameters.mergedAttributeStyle.

  • [DGN Converter] Exposed the name of Element ID primvar as omni.converter.dgn.tokens.elementIdPrimvar.

  • [DGN Converter] Triangulation of Meshes is now optional based on Parameters.triangulate. The default value is true.

  • [DGN Converter] Validate transform scale of 2D objects.

  • [DGN Converter] Display name metadata is authored for metadata UsdGeomSubsets.

  • [DGN Converter] Graphics Elements are sorted by Element ID before conversion to make results more consistent.

  • [DGN Converter] Display name metadata is authored for all Prims that could not use the prefered name.

  • [DGN Converter] The element type is transcoded with the rest of the Prim name rather than added as a suffix.

  • [DGN Converter] Prims representing merged Graphics Elements no longer have an element Id in their name.

  • [DGN Converter] Support basis curve width and expose fallbackCurveWidth.

  • [DGN Converter] Add mergeCurves option to control curve merging.

  • [HOOPS Converter] Set display name for material prims

  • [HOOPS Converter] Author widths primvar for USD Basis Curves

  • [HOOPS Converter] Update to HOOPS Exchange 2025.6

  • [HOOPS Converter] Only specialize Materials when the instancing style requires it

  • [JT Converter] Apply translation to geometry Prims to place them at the centroid of the Part

[204.0.4] - 2025-08-18#

  • [DGN Converter] Respect Level based color override flag.

[204.0.3] - 2025-08-07#

  • [DGN Converter] Skip extrusion solids that do not have valid extents

[204.0.2] - 2025-08-01#

  • Fix publishing issue

[204.0.1] - 2025-07-15#

  • [JT Converter] Fixed layer filtering

  • [HOOPS Converter] Deduplicate Materials

  • [HOOPS Converter] Author primvar display colors and opacities when materials are disabled

  • [HOOPS Converter] Added instancing style parameter

  • [HOOPS Converter] Move Looks scope to child of default prim

  • [HOOPS Converter] Update to HOOPS Exchange 2025.5

  • [DGN Converter] Update ODA Kernel and Drawings SDKs to version 26.6

  • [CAD Converter] Fixed convert options mapping

[204.0.0] - 2025-06-30#

  • Update to Kit 108 / USD 25.02 / Python 3.12

[203.2.2] - 2025-06-16#

  • [DGN Converter] Mirror transformations are translated correctly

  • [DGN Converter] Rotations are correctly translated

  • [DGN Converter] Element names are stored in USD

[203.2.1] - 2025-06-11#

  • [CAD Converter] Include core extension and backend converter versions in output creator metadata

[203.2.0] - 2025-06-10#

  • [CAD Converter] Conversion failures are correctly handled and logged

  • [CAD Converter] Conversion arguments and Parameters are logged at the start of conversion

  • [DGN Converter] A transform is applied to Mesh prims to place them at the centroid of their combined Graphics Elements

  • [HOOPS Converter] The Prototypes Prim is a Scope rather than having an undefined type name

  • [HOOPS Converter] Addressed memory leak vulnerabilities

  • [HOOPS Converter] Fixed conversion failures due to UnicodeDecodeError on Linux

  • [HOOPS Converter] BIM relationships are translated to UsdRelationships for IFC models

  • [JT Converter] Update to JT Toolkit version 11.7.1

  • [JT Converter] Empty UsdGeomPointBased Prims are not defined if no points were generated

  • [JT Converter] Line strips where the end vertex of one line is collocated with the first vertex of the next will be joined together

  • [JT Converter] Constant display color primvars based on Material parameters are only authored in the absence of per vertex colors

  • [JT Converter] Per vertex normals are translated for UsdGeomBasisCurves and UsdGeomPoints prims

  • [JT Converter] Per vertex colors are translated for UsdGeomMesh, UsdGeomBasisCurves and UsdGeomPoints prims

  • [JT Converter] Constant widths are translated for UsdGeomBasisCurves prims

[203.1.4] 2025-05-21#

Changed#

  • [CAD Converter] Added .usdz export feature from UI.

  • [DGN Converter] Updated to ODA Kernel and Drawings SDKs to 26.3

  • [DGN Converter] Changed default surface tolerance from 0.0 to 0.2 for batch conversion mode

  • [DGN Converter] The element type attribute is now a Tf.Token rather than a String.

  • [DGN Converter] Custom attributes holding the color and fill color of Graphics Elements are authored.

  • [DGN Converter] Per object metadata for merged Element Meshes will only be created as UsdGeomSubset Prims if there are less than 1000 input Elements as a measure to limit conversion hangs.

  • [DGN Converter] Improved conversion time for DGN files with vast numbers of sibling Elements.

  • [HOOPS Converter] Updated HOOPS Exchange SDK to 2025.3.0

  • [HOOPS Converter] Include BIM relationships in IFC model metadata conversion

Fixed#

  • [CAD Converter] Fixed .SAT and .DAE format support in omni.services.convert.cad extension by using file regex filters from core extensions.

  • [CAD Converter] Fix conversion failure when writing to Nucleus

  • [DGN Converter] Removed SQLite and DWF dependencies.

  • [DGN Converter] Package tokens python module.

  • [DGN Converter] Fill color is the default color for Materials; color will be used in its absence.

  • [HOOPS Converter] Removed Direct X library.

  • [HOOPS Converter] Package tokens python module.

  • [HOOPS Converter] Fixed missing metadata in converted usd output.

  • [HOOPS Converter] Attributes ‘No value’ is authored in USD for Attributes that do not have a defined value in the source file.

  • [HOOPS Converter] Only read attributes when metadata is being converted.

  • [JT Converter] Fix bug where the converter exports hidden geometry as visible

[203.1.3] 2025-05-09#

  • Fix dependency version constraints to properly handle minor and patch version updates

[203.1.2] 2025-04-28#

  • Updated backend converter versions

[203.1.1] 2025-04-23#

  • Expose option to choose between USD Preview Surface and OmniPBR materials (OmniPBR includes USD Preview Surface support)

[203.1.0] 2025-04-09#

  • Update DGN and HOOPS backend converter dependencies

[203.0.1] 2025-02-18#

  • Lock to USD target.

[203.0.0] 2025-02-14#

  • Update to Kit 107, USD 24, and Python311

  • ABI upgrade

  • Update progress logging

  • [JT Converter] Avoid Crash on Conversion Failure

  • [JT Converter] Exclude plmxml

  • [HOOPS Converter] Update to hoops exchange sdk 2025.1

  • [HOOPS Converter] Empty metadata conversion fix

  • [DGN Converter] Update to ODA Drawings SDK 25.12

  • [DGN Converter] Skip converting DGN element with invalid mesh vertices

  • [DGN Converter] Fix invalid merged mesh topology

  • [DGN Converter] Add option to skip merging meshes

  • [DGN Converter] Remove libxl.dll

  • [DGN Converter] Remove unused libraries with vulnerabilities

  • [DGN Converter] Fix smart solids level names

[202.1.0] 2024-11-26#

  • Merge release 202.0.0 updates into master

  • Update to Hoops Exchange SDK 2024.8

  • Update DGN Converter to ODA SDK 25.8

  • Fixed incorrect value for double type metadata conversion.

  • Fixed crash caused by invalid attributes.

  • Update dependencies for security

[202.0.0] 2024-10-22#

  • Add option to override up-axis and meters per unit USD stage metrics with Scene Optimizer with helpful quick links.

  • Add Scene Optimizer string config option

  • Merge release 201.1.0 updates into master

  • [HOOPS Converter] add bConvertMetadata option

  • Update documentation

  • Update extension versions in toml and documentation

  • Add version constraints in toml and bump hoops/hoops_core major semver

  • Update kit-kernel to 106.2

  • Updated HECC dependency containg 2024.6.0 Hoops SDK to address security vulnerability

  • Link hoops extension import options to the backend converter’s settings for metadata and hidden object handling.

  • Add option to specify USD output file format.

  • Add option to specify USD output file name.

  • [Asset Converter Service] Add new entrypoint to handle asset management on NVCF.

  • Migrate Hoops converter from CSDK to USD Exchange.

  • Migrate JT Converter from CSDK to USD Exchange.

  • Revert DGN Converter ODA library to version 25.4 to avoid version mismatch with HOOPS Converter

  • Update documentation for 202.0 release.

  • Update dependencies from release branch

[201.2.1] 2024-09-19#

  • Remove omni.usd as the extensions do not have a GPU dependency

  • Update kit-kernel to 106.1.0; Update Scene Optimizer; Remove Asset Validator as it is unused

  • Remove test data from build package

  • Update Scene Optimizer version dependency to maintain compatibility across Kit Kernel 106.0.x and 106.1.x

  • Create release branch with 201.2.0 hot fix updates

  • Resolve ETM issues by setting range on extension version dependencies

  • Republish without pre-release tags with kit-kernel 106.1

[201.1.0] 2024-07-22#

  • Audited documentation and updated based on changes for release 201.1.

  • Update pre-release tag to release candidate

  • Consolidate changelog pre-release entries

  • Bump semantic version for resolving versions in ETM tests.

  • Use converters’ packages built against Ubuntu 20.04

  • Use semantic versioning for extensions. Use external/marketing version in CHANGELOG.md

  • Add test waiver to extension to avoid OV Apps from failing test pipeline

  • Skip test for codeless omni.kit.converter.cad extension

  • Moved ui delegates and registration to separate extensions: .hoops, .dgn, .jt. Moved service registration to .hoops_core, .dgn_core, .jt_core. Moved more common functionality to .common. Renamed .cad_core to .hoops_core, removed .cad since all delegates / registration are in the new separate extensions.

  • Renamed cad_core to hoops_core

  • Updated set_app_data to include client name / version

  • Run scene optimizer as post-conversion task

  • Update extension.toml to lock extension to Kit SDK version being used

  • Update to 201.1.0, move connect-sdk and scene optimizer to omni.kit.converter.common

  • Update to Kit 106.0.1

  • Update converter_options payload from str to dict

  • Remove pre-release tag from public-facing release version

[201.0.0] - 2024-03-04#

  • Remove Nucleus test case from unreliable test cases

  • Update to kit-kernel 106.0

  • Add tessellation options subsection to UI.

  • Update metadata tests.

  • Update CATIA filters

  • Surface tolerance fix to have surface tolerance field present and hide LOD drop down when selecting a DGN file and vice versa when selecting other files for import.

  • JT Connect SDK branch integration.

  • Support for Surface Tolerance setting and UI field

  • [DGN Converter] add bConvertHidden option

  • Fix USD output path of DGN converter

  • Use same kit-kernel version as Connect SDK

  • Updated keywords for improving searchability for CAD Converters

  • Update to DGN converter that uses Connect SDK

  • Update passing of arguments to DGN subprocess

  • Update Connect SDK to release 0.6.0

  • fix etm - use explicit pre-release

  • etm-failure-fix and merge release to master

  • Update Overview.md documentation

[200.1.1] - 2023-11-28#

  • Fixed Overview.md doc for NX related files

  • Updated Overview.md doc for NX related files

  • Handle scenario when get_local_file_async() is not able to pull down nucleus file to local OV cached folder

  • Updated dependency version in extension.toml

  • Updated to OMFP-3756. Supports CAD file with a version suffix greater than 9. (i.e., car_bumper.prt.42)

  • Resolves issue saving files with valid characters in filename (i.e., periods)

  • Updated CAD Converter deps. Bump all extension versions

[200.1.0] - 2023-10-26#

  • Fixed typos in UI

  • Error handling when failing to write to Nucleus.

  • Changed version lock on all exact deps.

  • Removed .CATDrawing, .CATShape, NEU, XAS, and XPR supports

  • Fixed empty tessellation box

  • Show all conversion options when using multi-select

  • Fixed overwrite confirmation dialog text

  • Fixed Progress Window Cut Off

  • Spelling corrections; cutoff handled with OMFP-2051 fixes

  • OMFP-2051 - [CAD Converter][DGN] DGN progress needs better info

  • Added callback functions for dgn_core call through omni.kit.cad.converter UI

  • Added CAD Converter options to UI.

  • OM-86344 - [CAD Converter] Add import to current stage option

  • OM-99536 - [CAD Converter] Cannot overwrite existing files.

  • Fixed missing .STP/.IGS file extension support.

[200.0.0] - 2023-05-11#

  • Split UI and Core CAD Converter

[104.1.5] - 2022-12-19#

  • Added new endpoint for services

[104.1.4] - 2022-12-01#

Changed#

  • Official HOOPS Exchnge update to HE2022SP2U2

  • This include support for SolidWorks 2022

[104.1.3] - 2022-12-01#

Changed#

  • testing

[104.1.2] - 2022-12-01#

Changed#

  • testing HOOPS update HE2022SP2U2

[104.1.1] - 2022-11-10#

Changed#

  • preparing for kit 104.1

  • fixes for model visibility issues while instancing

  • converting hidden items as hidden

[104.0.2] - 2022-10-13#

Changed#

  • fixes to sub-part representation item transform stack

[104.0.1] - 2022-10-06#

Changed#

  • initial 104 build

  • initial 2022.3 with instancing

[103.5.5] - 2022-08-02#

Changed#

  • hoops license update permanent

[103.5.4] - 2022-08-01#

Changed#

  • rfind fix for converted asset path basename

  • that is where the converter writes the USD file during import

[103.5.3] - 2022-07-26#

Changed#

  • wait lock fix for python binding

[103.5.1] - 2022-07-22#

Changed#

  • bringing 103.1 hotfix items to 103.5 for View 2022.2

[1.0.14] - 2022-07-18#

Changed#

  • update license key for hoops sdk with permanent key

  • picking up hoops sdk direct from packman

  • additional CAD file format suffixes

[1.0.13] - 2022-07-07#

Changed#

  • update license key for hoops sdk with permanent key

  • test

[1.0.12] - 2022-07-07#

Changed#

  • added more file suffixes for Parasolid files

[1.0.11] - 2022-07-04#

Changed#

  • update license key for hoops sdk thru 20220731

[1.0.9] - 2022-06-23#

Changed#

  • Migration to HOOPS Viewer Sample

  • test

[1.0.8] - 2022-05-17#

Changed#

  • Representation Item Sets

[1.0.7] - 2022-05-03#

Changed#

  • update license key for hoops sdk up thru 20220630

[1.0.6] - 2022-05-03#

Changed#

  • full coverage of HOOPS triangle mesh formats including textures, and model structure info command line output

[1.0.5] - 2022-04-28#

Changed#

  • updated texture normals and format handling

[1.0.4] - 2022-04-25#

Changed#

  • fix for non USD safe names

    [1.0.3] - 2022-04-20

    Changed

  • update hoops version

[1.0.2] - 2022-04-19#

Changed#

  • add support for unsaved stage

[1.0.1] - 2022-04-04#

Changed#

  • disabled output file picker until filepicker bugfix: OM-47383

[1.0.0] - 2022-03-24#

Changed#

  • Initial extension from original omni.kit.converter.cad.

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