9 April 2018


This is a major release, bringing alembic packed primitives to HtoA. It also introduces the new Arnold 5.1 core including Optix and Noice (Arnold denoiser), adaptive sampling, operators for parameter overrides, toon shader, layer shaders and more.

  1. Get the install files on Solid Angle Downloads.
  2. Follow these installation instructions.

This release uses Arnold and OpenVDB 4.0.0.

Binaries available for the following Houdini, Houdini FX, Houdini Indie and Houdini Education production builds:


and for the following platforms:


Please note that Houdini Apprentice does not support third-party renderers and thus cannot run HtoA.



See also the Arnold release notes for the full list of core enhancements and fixes.