HOOPS Visualize Desktop 2026.4.0

Overview

HOOPS Visualize Desktop 2026.4.0 strengthens file-format security and addresses partner-reported rendering and PMI issues. This release introduces CRC-based integrity checking for the HSF file format, upgrades core third-party libraries (libpng and zlib) to resolve known CVEs, and fixes defects in color management and PMI reload workflows.

What’s New

HSF File Integrity (CRC)

A CRC (Cyclic Redundancy Check) has been added to the HSF file format. Files written by this version and later will include a CRC that is validated on read, helping to detect corrupted or malformed data before it can cause undefined behavior.

Technology Updates

Third-Party Library Updates

Library New Version
libpng 1.6.56
zlib 1.3.2

Library Compatibility Information

Library name Version Windows Linux OS X Android iOS Notes
Android NDK r27 unsupported unsupported unsupported supported unsupported  
HOOPS Exchange 2026.4.0 supported supported supported supported supported Android support is limited. See the programming guide.
HOOPS Communicator HTML Sprocket 2025.4.0 supported unsupported unsupported supported supported HC Sprocket only works with Visual Studio toolset 142.
HOOPS Communicator Streaming Sprocket (HCA) 2025.3.0 supported unsupported unsupported supported supported HC Sprocket only works with Visual Studio toolset 142.
.NET Framework 4.8 supported unsupported unsupported unsupported unsupported Required for Visual Studio v14.2 libraries and samples.
.NET Standard 2.0 supported unsupported unsupported unsupported unsupported Required for Visual Studio 2019 (toolset 142) and 2022 (toolset 143).
.NET Core 8.0 supported unsupported unsupported unsupported unsupported Required for Visual Studio 2022 (toolset 143).
Parasolid 35.1 supported supported supported unsupported supported For iOS platforms, support is limited to 64-bit platforms for the Parasolid Sprockets (hps_sprk_parasolid and hps_sprk_exchange_parasolid).
RealDWG 2023 supported unsupported unsupported unsupported unsupported RealDWG 2023 is only compatible with Visual Studio 2019 (v142 toolchain)
RealDWG 2025 supported unsupported unsupported unsupported unsupported RealDWG 2025 is only compatible with Visual Studio 2022 (v143 toolchain)
Qt 5.12.7 supported supported supported unsupported unsupported  
SketchUp 2023 supported unsupported unsupported unsupported unsupported VS2019 Redistributable required, and only x64 Sketchup is supported

Platform Changes

  • Platform Deprecation Announcement: Support for Visual Studio 2019 (toolchain 14.2) and .Net 8 will be discontinued in HOOPS Visualize Desktop 2026.9.0, planned for release in December 2026.
  • Platform Deprecation Announcement: Support for MacOS on Intel architecture will be discontinued starting with release 2026.9.0 in December 2026 due to the end of support in MacOS 27.

Deprecations

  • HOOPS Communicator sprocket (HCA) is deprecated and will be removed in HPS 2027.1.0.

Fixed Bugs

Issue Description
SDHV-21402 Fix tint management in color management.
SDHV-21412 Reloading a single PMI no longer breaks PMI visibility for the rest of the model by correctly preserving pocc conditions and avoiding style corruption during PMI reload, with new functional coverage for the HOOPS Exchange module.
SDHV-21443 Lib png was updated.
SDHV-21518 Upgraded to v1.3.2.