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Known Limitations


  • Light filters are currently not supported

  • Mesh lights currently do not function as expected

  • Light filter linking is not available
  • PxrEnvDayLight and PxrAovLight are not supported

  • Custom light plugins are not supported 

  • Portal lights are not supported
  • We do not support the light handle operation to match the normal or shading attributes of a surface

Interactive Rendering

  • Crop Windows are not available.  Crop Windows do work with 24.2 and later within Houdini 19.
  • Bucket Order and Bucket Origin options do not work as expected
  • Interactive denoising is not available
  • PxrMaterial Builder nodes to not work as expected
  • A small group of options within the RenderSettings node do not apply to interactive renders.  For example, maximum thread count.

Batch Rendering

  • Baking illumination not supported


  • NURBS and Implicits not supported
  • Nested Instances are pre-expanded


  • txmake must be run manually on textures
  • The dynamic array node is not expected to work in Solaris for the initial release

Expansion and plugins

  • Only the built-in Integrators are supported
  • Only the built-in Projection plugins are supported