Houdini Main Changelogs
| 20.5.772 | Fixed a bug where some objects wouldn't be drawn into the pick buffer if in wireover draw mode, affecting tool states that rely on pick rendering to test for viewport geometry. Caused by the stencil test state on the command buffer being misconfigured  | 
                    yesterday | |
| 21.0.524 | Fixed a bug where some objects wouldn't be drawn into the pick buffer if in wireover draw mode, affecting tool states that rely on pick rendering to test for viewport geometry. Caused by the stencil test state on the command buffer being misconfigured  | 
                    yesterday | |
| 21.0.524 | 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.  | 
                    yesterday | |
| 21.0.524 | 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. Also fixed a bug where the same toggle, when enabled on the FbxCharacterOutput ROP, was not being applied to the animated skeleton (only the capture pose).  | 
                    yesterday | |
| 21.0.524 | When plasticity is enabled for Bullet soft constraints and the solver creates missing attributes such as 'stiffness' and 'angularstiffness', these attributes are now assigned default values of 1.0. This fixes an issue where the stiffness was unexpectedly set to 0 for any inactive soft constraints.  | 
                    yesterday | |
| 20.5.772 | Unhides a HUD handle when its parameter is drag-and-dropped if the handle was previously hidden.  | 
                    yesterday | |
| 21.0.524 | Fixed an issue with karma licenses not being checked out for non-houdini applications. !  | 
                    yesterday | |
| 21.0.524 | Autorig Builder SOP: Add better color indication for mirrored guides, to make it visually more clear that they the left bodyside gets priority for components. Add parameter controls to change the offset the test rig to the guides rig and to change the joint and control size of the given input fk rig. Add options to the automatic skeleton configuration to take metahuman configurations into account. This ensures that the rig builder sop is configured to be more performant when configuring metahuman rigs. Fix an update bug on the tweak control inputs.  | 
                    yesterday | |
| 21.0.524 | Add an option to the AutoRig Component SOP to automatically reset the test animation. Make sure that the node can be found in the tab menu when typing Rig.. instead of Autorig... Restructure the labels and the parameter layout for the rig builder configuration functionality to be more descriptive.  | 
                    yesterday | |
| 21.0.524 | Fixed a bug on the lookat component where auto up wasn't set properly when "useup" is toggled off.  | 
                    yesterday | |
| 21.0.523 | Support the non-MaterialX version of the USD Primvar Reader material node in HoudiniVK, since there have been several cases of materials using that node in MaterialX networks instead of the Mltx USD Primvar Reader.  | 
                    Sun. November 2, 2025 | |
| 21.0.523 | Improved the naming and removed duplicated code in OP_Node methods new to Houdini 21.0. `OP_Node`: 
 `OP_OutputIterator`, `OP_OutputReversedIterator`: 
  | 
                    Sun. November 2, 2025 | |
| 21.0.521 | Fixes a regression with RBD Material Fracture SOP's concrete fracture with chipping.  | 
                    Fri. October 31, 2025 | |
| 21.0.521 | Updated the Terrain Desktop radial menu and the Terrain Tools shelf to use the new HeightField Erode 3.0 node.  | 
                    Fri. October 31, 2025 | |
| 21.0.521 | Support fallback values for the Mtlx USD Primvar Reader node in viewport materials. Previously only default values from Mtlx Geometry Property was supported.  | 
                    Fri. October 31, 2025 | |
| 20.5.769 | Fixed the incorrect info in the help card, regarding the inputs of the Mtlx Switch VOP .  | 
                    Fri. October 31, 2025 | |
| 21.0.521 | Fixed a crash in Edit Material Properties LOP when editing a USD shader that has source code rather than an ID.  | 
                    Fri. October 31, 2025 | |
| 21.0.521 | Add support to the selection set python API for setting set colors with a hou.Color object.  | 
                    Fri. October 31, 2025 | |
| 21.0.520 | Fixed a bug in the RBD Material Fracture SOP's concrete fracturing which would assign the wrong name to detail fractured pieces with the Connectivity Partition parm set to None, when named source pieces were made of multiple disconnected pieces.  | 
                    Thu. October 30, 2025 | |
| 21.0.520 | The Scene Graph Tree once again shows the activation state of instance proxy (and prototype) prims.  | 
                    Thu. October 30, 2025 | |
| 21.0.520 | Fixed a bug where the Select Visible Only option wouldn't work when doing point box-picl selection. Caused by pick shader being misconfigured to read from the depth buffer  | 
                    Thu. October 30, 2025 | |
| 21.0.520 | Adding the standard "Resbuild Renderer-Specific Parameters" menu item to the Portal Light LOP.  | 
                    Thu. October 30, 2025 | |
| 21.0.520 | Fixed position coordinates being incorrectly generated for the Layer to Points COP.  | 
                    Thu. October 30, 2025 | |
| 21.0.520 | Fixed a bug where switching between Karma CPU and XPU might generate invalid textures, causing pink textures to show up in the viewport.  | 
                    Thu. October 30, 2025 | |
| 21.0.520 | Fixed a viewport MatX shader generation bug when two different hex tiling nodes were used in the same shader.  | 
                    Thu. October 30, 2025 |