Houdini Main Changelogs

21.0.871

Fixed a bug where husk metadata weren't being written out to EXR files when rendering in husk with "Legacy EXR Mode" enabled.

Fri. October 16, 2026
22.0.475

Fixed a bug where husk metadata weren't being written out to EXR files when rendering in husk with "Legacy EXR Mode" enabled.

Fri. October 16, 2026
22.0.474

Karma now supports object level primvars for mtlx_imagewidth mtlx_imageblur in addition to the global level properties on the render settings (i.e. primvars:karma:object:mtlx_imageblur). Note that there is no UI for this, but the properties can be created using an edit properties (or other means).

Thu. October 15, 2026
22.0.474

Recipes: Fixed a bug where parameter preset values which evaluate as False in Python (e.g 0, 0.0, '') were not being applied when selected from the Recipes sub-menu.

Thu. October 15, 2026
22.0.474

XPU: Fix an Embree-specific crash with nested instancing when toggling prototype visibility

Thu. October 15, 2026
22.0.474

Fixed bug where the APEX Autorig Component SOP incorrectly turned off the visibility of folders which contain nested shapes.

Thu. October 15, 2026
22.0.474

The Pack Folder SOP now tolerates having a leading slash in the folder path parameters.

Thu. October 15, 2026
22.0.474

Fixed a crash in the APEX Animate state which could occur when caching was enabled.

Thu. October 15, 2026
22.0.473

Fixed USD Create Component SOP, so that it sets the name to 'shape' if the primitives don't have name already authored. This matches the Component Geometry LOP behavior, as it was originally intended.

Wed. October 14, 2026
22.0.473

Improved how the Component Geometry LOP handles the alternate workflow to behave as it was originally intended. Also fixed the internal '__subdivs__' group from accidentally leaking into the UI or being used to create geomsubsets.

Wed. October 14, 2026
22.0.473

Improve the performance of the Saturation/Value square in the color editor.

Wed. October 14, 2026
22.0.473

The Texture Material Library LOP and Edit Properties LOPs now append the required UDIM suffix to asset paths authored to point to COP nodes if the containing COP Network specifies UDIM support.

Wed. October 14, 2026
22.0.473

Fixed a minor issue in some Muscle nodes whose multiparms would initialize with the wrong labels.

Wed. October 14, 2026
22.0.473

Added support for deforming linear BasisCurves prims via the APEX Animate LOP

Wed. October 14, 2026
22.0.473

mplay now properly respects the OCIO file_rules when loading images from disk.

Wed. October 14, 2026
22.0.473

Expanded the SimpleOpenCLSOPSnippets example file for the OpenCL SOP to include cases showing use of proximity queries, half-edge functions, and subdivision support.

Wed. October 14, 2026
22.0.473

Recipes: Fixed a bug where parameter presets saved with the "Submenu" checkbox in the Parameter Preset dialog left unchecked was resulting in empty submenu names being saved into the recipe. This was being surfaced in the Recipes menu as a group header with only a colon and no label.

Wed. October 14, 2026
22.0.473

Fixed a crash that would occur when calling hou.NodeType hidden or deprecated methods for manager nodes like /obj.

Wed. October 14, 2026
22.0.472

Improved the color editor window load speed.

Tue. October 13, 2026
22.0.472

Improved performance of the color editor.

Tue. October 13, 2026
22.0.472

The SOP Import LOP now supports using the 'usdprototypespath' attribute to configure the prototype location for point instancers, similar to what was already possible for native instances.

Tue. October 13, 2026
22.0.472

Fixed crash when using the Intersect Cache APEX node and the geometry has changed in between evaluations of the graph.

Tue. October 13, 2026
22.0.472

Add an option to the color editor to disable OCIO color correction entirely.

Tue. October 13, 2026
22.0.472

Fixes a python exception that would happen when clicking Revert to Factory Defaults on nodes containing the Resolution Menu Parameter. These nodes are:

  • Camera, Layer, Resample, ROP Image Output COP
  • Camera, Camera Edit, Copnet SOP
  • Texture Material Library LOP
Tue. October 13, 2026
21.0.868

Fix crash on File > New when a hipFile callback uninstalls an HDA.

Tue. October 13, 2026