Houdini Main Changelogs

21.0.653

XPU: improved support for "displayOpacity" and "Af" AOVs

today
21.0.653

Fixed hotkeys not working in the desktop manager dialog.

yesterday
21.0.653

Fixed a bug where visible distant or dome light outside atmospherics may have wrong attenuation if camera's far clip distance is too short to fully encompass the atmosphere.

yesterday
21.0.653

Fixed a bug where visible distant or dome light outside atmospherics may have wrong attenuation if camera's far clip distance is too short to fully encompass the atmosphere.

yesterday
21.0.652

Fixed an issue where certain frame rates were getting incorrectly rounded before being passed to FFmpeg, resulting in videos that played back at an incorrect rate.

Wed. March 11, 2026
21.0.652

Test Geometry: Otto Muscle Transfer recipe now has a new rest_transform stored in the transferred rig. There is also a new option in the joint_position_setup to correct for a character with bent limbs.

Wed. March 11, 2026
21.0.652

Respect the fallback colour for Mtlx Image nodes are referencing UDIM tiles which don't exist.

Wed. March 11, 2026
21.0.652

Fixed a bug in Karma Rendersettings LOP where choosing "UV" or "Texture Coordinates (st)" presets on Extra Render Vars would author invalid data type and cause render to fail with "Unsupported data format" error.

Wed. March 11, 2026
21.0.652

Recipes: Removed node type validation when recipes are installed, as this validation caused Houdini to hang at startup for several minutes when assets were loaded through a network. Before this change, a recipe with missing node type would display an error in the Recipe Manager and the recipe would be set invisible in the tab menu, shelf or in any other menus. If a recipe is placed with missing node types, the Log Viewer still provides a message about the node types that could not be created.

Wed. March 11, 2026
21.0.651

Fixed a crash when drawing the UV island boundaries in the GL viewport

Tue. March 10, 2026
21.0.651

Fixed a bug where the depth-buffer could be re-allocated, even though the size hadn't changed, during transparency passes

Tue. March 10, 2026
21.0.651

Karma Hair and Karma Fur shaders may now be used with Mtlx Mix VOP (Karma CPU only).

Tue. March 10, 2026
21.0.651

Fixed issues with UV expansion in the karma texture baker when using custom AOV names for alpha or when only rendering an alpha AOV.

Tue. March 10, 2026
21.0.651

Fixed a crash in subd and displacement mesh when there are degenerate collapsed edges where both ends share the same vert.

Tue. March 10, 2026
21.0.651

Fixed a potential race-condition that could be encountered during startup that could cause a crash.

Tue. March 10, 2026
21.0.651

Fixed an issue in the animation editor where, when you scaled keys using the "box handle" tool with "normalized values" turned on, the keys got offset vertically when you let go.

Tue. March 10, 2026
21.0.650

Fixed the casing on the time parameter for the lens_parameters VOP.

Mon. March 9, 2026
21.0.650

Fixed a bug in LPE AOVs where excluding a light with certain LPE tag using `^` metacharacter would erroneously exclude lights with empty LPE tag as well.

Mon. March 9, 2026
21.0.650

Fixed a bug in LPE AOVs where excluding a light with certain LPE tag using `^` metacharacter would erroneously exclude lights with empty LPE tag as well.

Mon. March 9, 2026
20.5.898

Backported fix for handling references to husk procedural graphs with environment variables in the path.

Mon. March 9, 2026
21.0.647

Reduced time it takes to resume from checkpoint when deep images are enabled.

Fri. March 6, 2026
20.5.895

Fixed possible crash when resuming render from checkpoint if deep images and husk's snapshot feature are both enabled.

Fri. March 6, 2026
21.0.647

Fixed possible crash when resuming render from checkpoint if deep images and husk's snapshot feature are both enabled.

Fri. March 6, 2026
21.0.647

Fixed a bug where electra where the limbs didnt scale when scaling the root.

Fri. March 6, 2026
21.0.646

Fixed a bug in the SOP Import LOP where agents were imported incorrectly if there were unique agent definitions with same value for the 'agentname' attribute.

Thu. March 5, 2026