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Welcome to RenderMan for Houdini 23.4!

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

RenderMan for Houdini now supports multiple production builds of Houdini 18. Please see the required version of Houdini for 18.0 as we have updated the builds we support.
Due to the changes in order to support multiple binary incompatible releases of 18.0; 23.4 will require different installation steps as linked here.
Rendering with RenderMan will not operate on Houdini Apprentice editions. See Side FX's website for options that allow Third Party Rendering

New Features

Added support for shutteroffset with packed alembic
Support added for point instancing from geo node (with ptinstance parameter)
Checkpointing can now take a sequence of intervals that it steps through with each checkpoint, this allows output at different specified timings. Please see the documentation link

Fixes

Fixed a bug where the manifold coordsys was not interactive
Fixed bug where transform motion blur was not propagated properly within subnets
Corrected a memory corruption bug that caused crashes with select alembic files
Fixed where the incorrect materials were applied to packed alembic geo

Miscellaneous Changes

Added a namespace argument to args2hda script
Added an originalCase flag to args2hdsa script to prevent shader names from converting to lower case

Reminder: Renamed Houdini velocity privmars called "v" to "vel"; as "v" is a reserved attribute for RenderMan geometry. Shaders in RenderMan for Houdini should refer to "vel" instead of "v".

Known Limitations

RenderMan for Houdini

Can only apply materials to packed instances
Display edits cannot be changed from the image tool to mplay
Cross-frame denoising pdg support
Applying undo of deleted nodes or collapsing to subnet may not work as expected
Rewiring subnet indirect inputs
Rendering with Mantra lights or VOPs not possible
Bypassing shader nodes
Auto camera creation for IPR
RenderMan clipping planes