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• Octane OpenPBR has a version setting: New Octane OpenPBR materials use OpenPBR 1.2. Houdini's native mtlx OpenPBR and materials from
• scenes saved with earlier versions stay on OpenPBR 1.1, so they render as before.
• Temporal Denoising toggle removed: from Render Target and Octane Render Setup. Temporal denoising is now always on.
• Polarization filter for cameras: Thin lens, Universal and Realistic Lens cameras have new Polarization intensity and rotation settings, in Render Target, Octane Render Setup and Solaris camera settings.
• Visibility cache for the Planetary environment: in Render Target, Octane Render Setup and Solaris render settings.
• Float image output type: The Float image texture can output Float or Color3.
• Displacement mode shown on the Displacement node: A new "Bake mode:" line shows whether Octane bakes the displacement as a UV atlas or with normalized UVs. It appears once the node has been rendered, and hides while its texture is changed until the next update. Displacement
• now also has a Projection input, for displacement with non-UV projections.
• New MaterialX support from Octane: Burley Diffuse, Conductor, Dielectric, Generalized Schlick, Oren-Nayar Diffuse and Sheen BSDFs, Flake 2D/3D, Artistic IOR and new roughness helpers.
• Houdini's MaterialX BSDF nodes can now connect to Octane material layer inputs and outputs.

• The IPR snapshot now matches the current render region / film region.
• Ctrl + mouse zooms the canvas in render region, film region and snapshot compare modes; tooltips show when canvas pan and zoom are available.

• Camera polarizer settings and the Planetary visibility cache (see above).
• MaterialX open_pbr_surface renders as OpenPBR 1.1, matching Houdini's MaterialX definition.
• The Displacement node's mode is written to the Octane log (Solaris can't show it on the node).
• Fixed octane:* camera and light edits not updating the render under Hydra 2.0.
• createPackageFileForOctane_NoSceneIndex.bat should be no longer needed, and will be removed from future releases, so please report any problems with createPackageFileForOctane.bat

• Fixed a crash when clearing the Tile Grid image node's File List.
• Fixed reloading instanced analytic lights losing their instance color.
• Fixed the Texture Switch input slider having a huge maximum.
• The per-GPU "Use priority" option in the Octane options was previously ignored, and GPUs used for denoising got priority instead.
• Demo version: the IPR's "Copy Image to Clipboard" menu is hidden, as it isn't supported there.

{
    "enable": true,
    "env": [
        {
            "OCTANE_AUTOSPAREPARAMS": {
                "value": 1
            }
        },
        {
            "OCTVERSION": "<path_to_plugin_directory>"
        },
        {
            "HOUDINI_PATH": {
                "value": "$OCTVERSION"
            },
            "HOUDINI_MENU_PATH": {
                "value": "$OCTVERSION/config/Menus"
            },
            "HOUDINI_SCRIPT_PATH": {
                "value": "$OCTVERSION/scripts"
            },
            "PATH": {
                "value": "$OCTVERSION/bin"
            },
            "PXR_PLUGINPATH_NAME": {
                "value": "$OCTVERSION/dso/usd_plugins"
            }
        }
    ]
}

pxlntwrk wrote: Wed Oct 07, 2026 8:52 am Hi, thanks for the release
This link "Windows Houdini 22.0.459" leads to the Linux version, not the Windows version.
Could you please correct the link?
Thanks in advance.
Cheers.

remKa wrote: Wed Oct 07, 2026 5:03 pm Thank you !

Super noob question, I already have Octane installed for the 0.268 version and when I launch "createPackageFileForOctane" obviously it tells me :

"houdini22.0\Packages\Octane.json already exists
Do you want to overwrite it?

Is there a way to keep Octane OctaneRender 2026.5.0.0 on Houdini 22.0268 and OctaneRender 2027.1.Alpha_3.0 on Houdini 22.0459 ?