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Houdini Niagara plug-in for Unreal

This plug-in adds a new "Houdini Data Interface" to Niagara. This version of the plugin is currently updated for UE5.4, but is compatible with previous versions of Unreal.

The data interface allows importing and processing Houdini Point Cache assets in Niagara. The point cache files can be exported using the Niagara ROP, available via the SideFXLabs tools. https://www.sidefx.com/tutorials/sidefx-labs-installation/

Supported file types for the point caches are:

  • *.hjson: Houdini JSON point cache (ascii)
  • *.hbjson: Houdini JSON point cache (binary)
  • *.hcsv: Houdini CSV point cache (legacy CSV, used by previous version of this plugin)

To install it:

The Houdini Niagara plugin now ships with Houdini builds. It can be found in the engine folder of your Houdini install, next to the Houdini Engine plugin:

Path\To\Your\Houdini\Install\Houdini XX.Y.ZZZ\engine\unreal\5.x\HoudiniNiagara

Alternatively, you can also download the prebuilt binaries in the "releases" section of this repo.

  1. Unzip the downloaded files.
  2. Copy the HoudiniNiagara folder into Your_Unreal_Project/Plugins/FX.

To build it:

  • Copy the plug-in files to your UE5 source directory. (in Engine/Plugins/FX)
  • Build UE5

You will now have access to the Houdini Niagara plug-in (under the Project/FX Category).

Once enabled, the plug-in will give you access to a new Houdini Point Cache Data Interface in the Niagara Script Editor. The Data Interface will allow you to use multiples nodes and functions to access and parse data from the exported point cache.

The Niagara plug-in must be enabled as well, as the Houdini Niagara plug-in depends on it too.

For more information:

Documentation:

Documentation for the plugin can be found here

Quick Start Videos:

https://www.sidefx.com/tutorials/houdini-to-ue4s-niagara/

Demo Content:

Example hip files and a content plugin can be found here.

To install the content plugin:

  1. Create a new ue5 project (if you don't have one already)
  2. Copy HoudiniNiagaraDemo2020 into the Plugins folder of your Unreal project.

Additional info and links to video tutorials here:

https://www.sidefx.com/forum/topic/73075/

Programmable VFX with Unreal Engine's Niagara | GDC 2018

https://youtu.be/mNPYdfRVPtM?t=2269