OCCT 8.0.1 is the first regular maintenance release in the 8.0 series. It consolidates the fixes, performance improvements, and build updates merged after 8.0.0p1.
The main focus of this release is modeling reliability, shape healing, periodic geometry, meshing, STEP export, concurrent fillet construction, and Windows/MSYS2 integration.
Highlights
Modeling and shape healing. Boolean operations and periodic B-spline processing are more reliable, with fixes for missing pcurves, replaced faces, empty wire sequences, non-manifold boundaries, and periodic conical faces.
Performance and concurrency. Face validation and curve-on-surface deviation checks are faster, while fillet reconstruction now supports independent parallel operations safely.
Exchange, meshing, and build integration. STEP export handles long strings and healing parameters more robustly, meshing is improved at periodic seams, and CMake integration is better for Windows, TBB, FreeType, and MSYS2.
The C++17 baseline and the core API and ABI introduced with 8.0.0p1 remain unchanged.
Thank you to everyone who reported issues, contributed fixes, reviewed changes, and helped validate this release.