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Welcome to RenderMan for Houdini 23.2!

This release of RenderMan for Houdini 23 (RfH), includes a number of new features and bug fixes that address feedback.

  • This release updates the required version of Houdini for 17.5 and 18.0
  • Rendering with RenderMan will not operate on Houdini Apprentice editions, see Side FX's website for options that allow Third Party Rendering
  • Houdini Indie is only compatible with 17.5, you must be using at least version 17.5.210 or higher


  • A bug that caused the denoise channels to always be emitted when using the OpenEXR display driver has been fixed

  • Fixed bug where velocity was not read correctly from points
  • Fixed bug for soloing float outputs and allow soloing normal outputs

Miscellaneous Changes

  • Added global trace depth parameters to the ROP node

  • Allow non-uniform scaling of disk lights

  • Improved PxrOSL hints
  • Dynamic array nodes can create int arrays in H18.0. In H17.X, the shader network will show a type mismatch error but the render will still work

Known Issues

  • Display edits cannot changed from the image tool to mplay
  • Cross-frame denoising pdg support
  • Phantom objects are removed from all rays, not just camera rays
  • Applying undo of deleted nodes or collapsing to subnet may not work as expected
  • Rewiring subnet indirect inputs

Known Limitations

  • Rendering with Mantra lights or VOPs not possible
  • Bypassing shader nodes
  • Auto camera creation for IPR
  • RenderMan clipping planes