Houdini Main Changelogs

Houdini 19.0.503 Fixed issue when using Channel Copy COP to create a new C channel. Mon. January 17, 2022
Houdini 19.0.503 Updated the USD library with a couple of non-standard methods on the HdSceneDelegate and UsdImagingPrimAdapter classes. This will only affect users that build their own Hydra plugins. And in particular the only code change that might be required would be to implement the GetScenePrimPaths API on any instancer-type UsdImaging prim adapters. A simple implementation can be found on UsdImagingPointInstancerAdapter. See the changes on github at:
  • https://github.com/sideeffects/USD/commit/928c584e879966eac6f9b5dfcc7a5cc6014553dd
  • https://github.com/sideeffects/USD/commit/a3ed33f703aad9aa643ec1c499997f8e3fe34d37
Mon. January 17, 2022
Houdini 19.0.503 Updated the USD library to include new functionality that will make working in the Solaris viewport with large numbers of native instances much faster. Also enabled the selection of point instancer instances when running Karma or third party renderers in the viewport. Mon. January 17, 2022
Houdini 19.0.500 Fixed a bug with instancing assets where assets were not always loaded from disk when not in memory. Fri. January 14, 2022
Houdini 19.0.500 Only set Landscape layer NoWeightBlend option if a LayerInfo is created for the first time or if an attribute is present. Fri. January 14, 2022
Houdini 19.0.500 Fixed a case where an animated texture would sometimes not update properly in the viewport. Fri. January 14, 2022
Houdini 19.0.500 Enabled the selection of point instancer instances when using render delegates besides Houdini GL. Also made some performance improvements in native instance selection and scene graph tree refreshes. Fri. January 14, 2022
Houdini 19.0.500 Fix velocity blur issue that occurred in some cases of importing Packed Primitives to LOPs - where a constant primvar was created for "velocities". Fri. January 14, 2022
Houdini 19.0.500 Fixed a bug where baking landscape tiles as normal landscape actors (with the unreal_landscape_tile_actor_type attribute set to 0) to sublevels would create streaming proxies in the sublevels instead of landscape actors. Fri. January 14, 2022
Houdini 19.0.500 Added more caching in the HoudiniGL delegate for meshes, specifically for extents and topology. In some cases these were being unnecessarily recomputed. Fri. January 14, 2022
Houdini 19.0.499 Fixed an issue where the plugin will commonly log the "Composing Child Node List : Invalid argument given: Node is not a network node so it has no children!" error for certain editable nodes (curves) Thu. January 13, 2022
Houdini 19.0.498 The Advanced tab of the Tissue and Skin solvers now include a toggle to enable the more efficient ARAP Volume Preservation method. Under normal circumstances, this should always be left ON. Wed. January 12, 2022
Houdini 19.0.498 Fixed a viewer bug where using an image for a texture and a background could cause the pre-processed texture image to affect the way the background was displayed. Wed. January 12, 2022
Houdini 19.0.498 The anistropic elementsize and offset options of Attribute Adjust Color for noise is now properly linked up so should work. Wed. January 12, 2022
Houdini 19.0.498 Fixed a bug where VEX trace() and occlusion() ray visibility was tied to primary visibility. This bug was introduced in 19.0.465. Wed. January 12, 2022
Houdini 19.0.498 Fixed a bug where the StaticMesh translator would read point attributes from an incorrect point index. Wed. January 12, 2022
Houdini 19.0.498 Fixed a bug with baking static mesh outputs where temporary complex collision meshes (the collision_geo group) would not be baked. Wed. January 12, 2022
Houdini 19.0.498 Fixed a bug where the Temporary Cook Folder property on the HoudiniAssetComponent and the unreal_temp_folder attribute were not working correctly. Wed. January 12, 2022
Houdini 19.0.498
  • Fixed an issue where the Houdini Engine Tools with both HDA and Mesh input would not assign both inputs correctly.
  • Mentioned the documentation in the Visual Scripting example scene.
Wed. January 12, 2022
Houdini 19.0.497 MuscleSolverVellum, TissueSolverVellum, and SkinSolverVellum all default to using the Scale-Invariant ARAP model for the tet stretch and fiber constraints. As a result, incoming shape stiffness and fiber stiffness values need to be increased by at least an order of magnitude to produce similar results. Volume is now automatically preserved causing Volume Stiffness values to be ignored. Tue. January 11, 2022
Houdini 19.0.497 Muscles, Tissue, and Skin now use the Scale-Invariant ARAP model for tet-stretch, triangle-stretch, and fiber constraints by default. As a result, stiffness values need to be adjusted (increased) accordingly. Tue. January 11, 2022
Houdini 19.0.497 Fixed width of edge selection lines on MacOS, which varied depending on the scale of the geometry, rather than remaining a fixed pixel size. Tue. January 11, 2022
Houdini 19.0.497 Fixed noisy direct lighting in reflection component of MaterialX implementation of Standard Surface when the material is transparent and Direct Refraction Subset property is set to "Outside" (default value). Tue. January 11, 2022
Houdini 19.0.497 Fixed display corruption with polar maps used by GL which were larger than the maximum 2D texture size display option. Tue. January 11, 2022
Houdini 19.0.497 Fixed a bug that could cause Houdini to incorrectly think file permissions do not allow the user to open an Alembic archive. Tue. January 11, 2022