Houdini Main Changelogs

21.0.475

Fix MotionMixer Joint Matching to previous clip when extendafter is set to Hold. It was pulling the frame before the clip_end to do the matching.

Mon. September 15, 2025
21.0.475

Fix issue with using APEX Control Extract SOP with the MetaHuman rig where errors would be produced. In particular, the rig::PointConstraint and rig::PrimConstraint APEX nodes no longer error on empty geometry and will warn instead.

Mon. September 15, 2025
21.0.475

Fixed a bug in the APEX Animate state where the label of the control was no longer being used when hovering over it in the state.

Mon. September 15, 2025
21.0.475

Fixed a bug where drawable geometries in SOP viewer states could become disabled and disappear from the viewport after entering and exiting a volatile state such as the View or Select states. This fixes a bug in the APEX Animate viewer state where control highlighting would stop working.

Mon. September 15, 2025
21.0.475

Fixed a bug where curve primitives wouldn't be drawn in the UV viewport

Mon. September 15, 2025
20.5.723

Fixed a bug where curve primitives wouldn't be drawn in the UV viewport

Mon. September 15, 2025
21.0.475

Fixed a bug Apex Characters lose transforms after the source node re-cooks

Mon. September 15, 2025
20.5.723

Fixed spurious assert in VK viewport initialization

Mon. September 15, 2025
21.0.475

Fixed a possible crash upon IPR update when a point instancer has native instancer prototype.

Mon. September 15, 2025
20.0.1195

Fixed a potential crash when drawing packed or instanced prims with a visualizer active

Mon. September 15, 2025
21.0.475

Position Sample COP's signature is fixed for RGB inputs to be a proper RGB output.

Mon. September 15, 2025
21.0.475

Extrapolate Boundaries COP won't create NANs in CPU mode where the islands meet.

Mon. September 15, 2025
21.0.475

Changed the default tablet driver to Windows Ink on Windows. This should fix various issues with tablet operations.

Mon. September 15, 2025
21.0.475

Fixed a potential crash when drawing packed or instanced prims with a visualizer active

Mon. September 15, 2025
20.5.723

Fixed a potential crash when drawing packed or instanced prims with a visualizer active

Mon. September 15, 2025
21.0.475

Fixed an issue where the Image ROP would crash if an output driver could not be found.

Mon. September 15, 2025
21.0.475

Support GSplat rendering in Stage. Implemented point selection for Gaussian Splatting scenes with group highlighting and mouse picking. Added display options for visualizing point markers and point numbers. Fixed macOS-specific rendering issues where points appeared as triangles during selection and when displaying point markers.

Mon. September 15, 2025
21.0.475

Implemented depth reconstruction to enable proper depth testing between GSplat scenes and mesh geometry. Enhanced renderer performance through bindless vertex implementation. Enable pivot tumbling.

Mon. September 15, 2025
21.0.475

Added support for 3D Gaussian Splatting rendering with GPU radix sorting and indirect draw/compute dispatch for real-time performance. The renderer integrates with HDA "Bake GSplat" node with configurable renderer modes and SPH color options. Fixed rendering stability issue, flickering in small scenes, caused by data races in frustum-culled sorting. Supported object selection in GSplat scenes.

Mon. September 15, 2025
21.0.475

Fixed authoring custom properties via the USD Configure Prims from Points SOP.

Mon. September 15, 2025
21.0.475

The SOP Import LOP now authors the `usdmaterialreffile` attribute as an asset path, rather than a string.

Mon. September 15, 2025
20.5.723

Added a new `usd_bindmaterial()` VEX function.

Mon. September 15, 2025
21.0.475

Add a new 'usd_bindmaterial()' VEX function.

Mon. September 15, 2025
20.5.722

Fixed Bake To Blueprint option not being selectable in PDG.

Mon. September 15, 2025
21.0.474

Backport for r515914 and r516323 - Fix Stage Manager crash when using the Duplicate action in the RMB menu on a prim in the python panel. Fixed a bug where copying multiple items in the tree sometimes caused a null parent item due to it being weakref object. Fixed a bug where the tree was unnecessarily refreshed after a paste op, resrting the scroll position and selections. Centralized the visibility and activation icons in the tree. Fixed a bug where selecting items in the tree were being ignored due to recursive callbacks. Disabled double clicking on the visibility and activation columns.

Sun. September 14, 2025