Houdini Main Changelogs

21.0.542

AOV names that contain spaces in EXR files are now imported properly.

yesterday
20.5.789

Fix Shape Diff SOP crash when given inputs with mismatched point counts.

Thu. November 20, 2025
21.0.541

Fix Shape Diff SOP crash when given inputs with mismatched point counts.

Thu. November 20, 2025
21.0.541

Fixed a bug where deep camera map in EXR format had incorrect channel names for beauty plane ('C.r', 'C.g', 'C.b' instead of 'R', 'G', 'B').

Thu. November 20, 2025
20.5.789

    Added a "Remove Scales from Joint Transforms" toggle parameter to the    FbxAnimOutput ROP. This removes scaling from the global transforms of    skeleton joints while preserving rotation and translation.

Thu. November 20, 2025
20.5.789

Fixed a bug where the "Remove Scaling from Joint Transforms" toggle on    the FbxCharacterOutput ROP was not being applied to the animated skeleton    (only the capture pose). This was the intended behavior and should produce    expected results when importing these rigs in Unreal.

Thu. November 20, 2025
21.0.541

Grayscale RLE-compressed TGAs are now supported.

Thu. November 20, 2025
20.5.789

Fixed an issue where the Cop Path parameter of the Image ROP would be disabled when the node had an input.

Thu. November 20, 2025
21.0.541

Muscle Paint SOP has new parameter "Otis Attributes Only" to remove Vellum only muscle attributes from paintable attributes.

Thu. November 20, 2025
21.0.541

Fixed a bug on the limb component that would cause the twist to not work as expected.

Thu. November 20, 2025
21.0.540

Added a new toggle 'Treat Mono as Alpha' to Scatter Shapes COP. Which fixes a case where a mono input with mono output signature would result in a different look to the original.

Wed. November 19, 2025
21.0.540

Fixed a bug in CPU and XPU (with embree device) where uniform volumes may sometimes produce fictitious hits outside of container geometry, which can cause speckling artifacts in utility AOVs such as built-in depth AOV.

Wed. November 19, 2025
20.0.1260

Fixed a potential crash in the viewport when displaying packed USD primitives

Wed. November 19, 2025
21.0.539

Fixed a bug in the Background Plate LOP which caused the offscreen texture to disappear when rotated.

Wed. November 19, 2025
21.0.540

Fixed a bug on the clean component where unpromoting wasnt working.

Wed. November 19, 2025
21.0.540

Fixed a bug on the blendshape component where the sliders "use_Y" value wasnt set for each slider in some cases.

Wed. November 19, 2025
21.0.539

Fixed a bug in the Extract Instances LOP with scalar primvars.

Wed. November 19, 2025
21.0.540

Recipes: Fixed missing 'Preset' label when only Parm Preset recipes are available in the right-click node menu.

Wed. November 19, 2025
21.0.540

Fixed issues preventing Delta Mush 2.0 from being used in compiled blocks.

Also fixed a bug where normals weren't recomputed in blur mode, i.e. when used with a single input.

Made blurring more efficient by discarding unaffected geometry, same as in delta mush mode.

Bug: 148639

Wed. November 19, 2025
21.0.538

Added support for Unreal Engine 5.7

Mon. November 17, 2025
21.0.538

Add support for dark mode on Windows for the pop up console dialog.

Mon. November 17, 2025
21.0.538

Fixed a crash when changing preferences after closing a scene viewer pane.

Mon. November 17, 2025
21.0.536

Exposed error message nodes in Scatter Shapes.

Sat. November 15, 2025
21.0.536

Fixed a case where Reaction Diffusion Block Begin would not accept Chemical (UV) inputs.

Sat. November 15, 2025
21.0.535

Add additional resource validation checks when binding descriptor sets, to improve viewport stability

Fri. November 14, 2025