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Welcome to RenderMan for Houdini

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26!

RenderMan for Houdini (RfH) continues full support of the latest RenderMan.  See the RenderMan Release Notes for more details.

This current release offers support for:

• Houdini 1920.5 0 (including Solaris)
• Houdini 19.0 5 (Including including Solaris)
• Houdini 18.5 (including Solaris)19.0

Please see the release notes below for all the new capabilities and known issues.  See the Installation of RenderMan for Houdini page for the list of specific production builds RfH works with.

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"The Unsullied" by Dylan Sisson, rendered in RenderMan for Houdini

Lama Parameter Name Changes

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Known Limitations

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Installation

• Renderman Houdini packages isn't supported in Houdini 18.5.

RIS and XPU

• Solaris: Light property names will be renamed to conform to the new USD schema in 19.5
• When a dome light is visible in the Houdini viewport, moving the camera can become unpredictable

Known Limitations - Existing

Live Statistics

Solaris

• Mesh Lights currently only work with RIS on Linux & MacOS systems
• Only one material per material library can be saved to the preset browser at this time.
• Due to a SideFx limitation, there are some shading network circumstances where the visualizer node doesn't solo networks correctlyLive statistics are turned off by default.  Artists can turn on the statistics through the buttons in the UI.

MaterialX Lama

• Soloing complex MaterialX Lama shading networks.

XPU

• CUDA device is saved in the scene rather than as a preference.

General

• Rendering to IT with ACES currently needs the env variable IT_OCIOV1 to be set to your ACES config.ocio
• Render with Takes is not supported. 
• Rendering with Mantra lights or VOPs is not possible
• Bypassing shader nodes
• Auto camera creation for IPR
• RenderMan clipping planes
• Display edits cannot 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
  

Changes in RenderMan for Houdini 25.1

• Solaris: RenderMan now respects the thread settings in husk.  RMAN-16592
• Solaris: "light group" and "visible in refraction" ligth attibutes now correctly working.  RMAN-20589
• Solaris: If you are using a Shutter of 0.0, 0.0 (for example, to turn off motion blur), XPU will now render properly.  RMAN-20621
• Fixed a problem that would cause Stylized Looks to crash within Houdini.  RMAN-20661
• If you were using XPU to render to "it" and resized the display window, XPU would have crashed.  This is now fixed.  RMAN-20237
• When rendering interactively in Houdini, XPU would not render in-memory volumes.  This is now fixed.  RMAN-20780

Changes in RenderMan for Houdini 25.2

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Inside Out 2 © Disney/Pixar

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