Houdini Main Changelogs

21.0.551

Fixed a crash in the Volume LOP that would occur when it was set to sample a frame range, but the frame range provided was invalid (e.g. 0,0,0).

昨日
21.0.551

Fix regression in the reference and referencedby LOP auto-collections which caused them to not find instance proxy prims that they should have matched.

昨日
21.0.551

The HDK_API_VERSION has been bumped to 21.0.551. Back in 21.0.546 there were changes to a couple of PRM_Parm and PRM_Instance functions. There was also a change to the size of the PRM_ParmList object, which probably broke the ABI compatibility of almost all HDK plugins. In 21.0.551, this change to the size of PRM_ParmList was reversed, so many HDK plugins built before 21.0.546 will be broken from 546 to 550, But there is a good chance these binaries will start working again with 551. We apologize for this confusion.

昨日
21.0.550

Recipes: Fixes node type validation for recipes when the editable content's node type differs from the asset's node type. This affected objnet assets like hairgen and guidegroom.

土. 11月 29, 2025
20.5.797

Fixed incorrect handling of render product filenames that contained angle brackets (such as "foo<bar>.exr").

金. 11月 28, 2025
21.0.549

Fixed incorrect handling of render product filenames that contained angle brackets (such as "foo<bar>.exr").

金. 11月 28, 2025
21.0.549

Reduce memory overhead when compiling shaders for the viewport

金. 11月 28, 2025
21.0.549

Fixed a bug where XRay primitives aren't drawn properly in some viewport lighting modes

金. 11月 28, 2025
21.0.549

Fixed a bug where visualizers wouldn't draw if the visualizer was set to only allow Primitive attributes

金. 11月 28, 2025
21.0.549

Fix viewport errors rendering curves and using MaterialX materials with curves

金. 11月 28, 2025
21.0.549

Added parameters "Use Upper" and "Use Lower" to the twist tab of the limb component.

金. 11月 28, 2025
20.0.1269

The Instancer LOP now has a "Create Prototypes Area" parameter. When disabled, prototypes are linked to directly in their current scenegraph location. This is only relevant when using prototypes from the first input connection.

金. 11月 28, 2025
20.5.797

Fixed handling of deep OpenEXR images for the dsmpixel() VEX function.

金. 11月 28, 2025
21.0.549

Fixed handling of deep OpenEXR images for the dsmpixel() VEX function.

金. 11月 28, 2025
21.0.548

RBD Car Fracture SOP's guide geometry and selection geo now updates properly when a car rig or simulation points are fed into the 4th input.

木. 11月 27, 2025
21.0.548

Fixed preloading libraries for render delegates.

木. 11月 27, 2025
21.0.548

Removed the HoudiniAsset, Inputs and Parameters arrays from the runtime part of the plugin via WITH_EDITORONLY_DATA guards, as their garbage collection at runtime could in some case introduce an unneeded extra cost. (Houdini actors and components do not need to access these at runtime)

木. 11月 27, 2025
21.0.548
  • Added support for COP HDA inputs, and COP node path parameter inputs (coppath).
  • Fixed a few issues with asset editor in 2d mode.
木. 11月 27, 2025
20.5.796

Removed the HoudiniAsset, Inputs and Parameters arrays from the runtime part of the plugin via WITH_EDITORONLY_DATA guards, as their garbage collection at runtime could in some case introduce an unneeded extra cost. (Houdini actors and components do not need to access these at runtime)

木. 11月 27, 2025
21.0.548

Fixed a bug with the Fetch COP when the target node had cable outputs.

木. 11月 27, 2025
21.0.548

Fixed a bug in Muscle Adjust Volume SOP. Collisions will now be handled slightly differently, giving different results.

木. 11月 27, 2025
21.0.547
  • HAPI_CreateNode can now create COP nodes without a parent.Nodes created this way will be created in a COP network atthe OBJ level.
  • Added the possibility to connect COP nodes together.A fetch COP will be created if needed.
水. 11月 26, 2025
21.0.547

Fixed a macOS-only bug in the PDG Deadline plugin where an incorrect Python path was set in the job environment.

水. 11月 26, 2025
20.5.795

Added environment variable KARMA_BSDF_OPTIMIZED_MIP which can be set to 1 to adjust ray differentials on secondary rays based on roughness of materials to help reduce disk access and memory usage of mipmapped textures on both CPU and XPU.

水. 11月 26, 2025
21.0.547

Added environment variable KARMA_BSDF_OPTIMIZED_MIP which can be set to 1 to adjust ray differentials on secondary rays based on roughness of materials to help reduce disk access and memory usage of mipmapped textures on both CPU and XPU.

水. 11月 26, 2025