# 3DF 27.54

## Library Compatibility Information

Library Name | Version | Windows | Linux | OS X | Notes
--- | --- | --- | --- | --- | ---
DGN Direct | 4.2 |  |  |  |
HOOPS Communicator | 2022 SP1 |  |  |  |
HOOPS Exchange | 2024.4.0 |  |  |  |
HOOPS Publish | 2024.4.0 |  |  |  | Requires support for SSSE3 instruction set.
.NET Framework | 4.0 |  |  |  | v4.5 required for wpf_image and for WPF over Remote Desktop
Parasolid | 32.0.x |  |  |  |
Qt | 5.12.7 |  |  |  | Visualize is compatible with Qt 5.4 on OSX
RealDWG | 2019 |  |  |  | RealDWG 2019 is compatible with Visual Studio 2015 Update 3 and Visual Studio 2017 Update 2
SketchUp | 2021 |  |  |  | 64-bit Windows only. Requires Visual Studio 2019 Redistributable.

## Functional Changes

- Highlights Highlights of different styles on different segments display the requested highlight. Geometry remains visible when segements with line weight greater than zero are highlighted. Individual shell vertices colored by RGBA can be highlighted.
- Face Lighting and Patterns Lighting appears correct when parts of a face are deleted. When HC_Set_Driver_Options(“window opacity=0”) is set the face pattern applied is also rendered.
- Show_Owner_By_Key Show_Owner_By_Key returns with correct key in the C# interface.
- Windows SDK Support All Windows platform sandboxes have been updated to Windows SDK 10.0.22621.3233.

## Fixed Bugs

As of Apr 29, 2026

Issue | Description
--- | ---
SDHV-20659 | HC_Show_One_Heuristic returns wrong value for quick moves
SDHV-20635 | Selection element offsets 1, 2 and 3 are constantly zeros after ray selection on a polycylinder
SDHV-20581 | Disappearing LineKeys after highlighting LineKeys on the same parent segment key
SDHV-20567 | Compute_Triangulation stuck in endless loop
SDHV-20566 | Show_Owner_By_Key gives invalid key when geometry was imported from JT file with m_bPRCMergeFaces set to true
SDHV-20563 | Round trip bug - Texture matrix not saved in HSF
SDHV-20512 | Disruption of Shell Faces Upon Deletion of Subfaces Using HC_Delete_Specific_Shell_Faces[240301-000015]
SDHV-20503 | Face Pattern fails at offscreen rendering
SDHV-20438 | Offscreen Image driver not rendering lines and markers with ‘window opacity=0’
SDHV-20416 | d3dcompiler_47.dll is outdated
SDHV-20413 | Isolines are displayed where there is no shell[231219-000000]
SDHV-20014 | Shader: texcoord1 fails on offscreen rendering
SDHV-19607 | Is is possible to set a highlight on the back face that is different than the front face?

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