Limitations

Can only start the plugin when viewing a 2D View.
The viewport cannot be opened when the Revit document is in “Readonly” mode.
The plugin will not open in Family edit documents.
Rendering of Decals is not currently supported (see Decals section on how to render decals).
Only texturemaps from the Revit 2016, 2017 and 2018 standard library material will automatically transfer during material conversion. For other material, you will need to manually specify the texturemaps in the Octane material.
Conversion of Revit Light Sources to Octane geometry emitters is not supported. All Octane emitters need to be actual geometry in the scene, rather than Revit lights. So to create emitter geometry, add geometry to the Revit scene and assign an Octane emitter to it's material
Rendering of ArchVision RPC families is not currently supported, but is planned (and you can use Geometry Proxies instead).
Rendering of Revit family instances which have no geometry (Studio Light for example) is not supported.
ProxyAn object saved as a separate file with the purpose of being reused in larger scenes. This is used to minimize any addition to the total polygon count in the scene, especially if the scene requires the same object to appear several times. If used in conjunction with instancing, Proxies help keep very large scenes from reaching polygon limits and also keeps the relative file size of the main project file manageable. items (OBJ files) can only be applied to Revit components or family instances which are placed on horizontal surfaces (and not placed on items like walls). Using proxy host items which are upright (for example, a family instance placed on a wall) will result in the proxy OBJ file rendering with the incorrect rotation.

Multi-Lingual Support

Revit can be started in languages other than English via this link . However there are limitations to the plugin functionality when using languages other than English, so it is recommended to start Revit in English when using the plugin. The limitations are:

Octane data will not be saved or reloaded from the .rvt file for some languages. When this happens, a “Project Browser element not found” error will be displayed.
Animate Walkthrough and Export Walkthrough to OCS will only work when the Revit language is set to English. See Walkthrough Animations for details.
Saving/exporting to OCS or ORBXThe ORBX file format is the best way to transfer scene files from 3D Authoring software programs that use the Octane Plug-in such as Octane for Maya, Octane for Cinema 4D, or OctaneRender Standalone. This format is more efficient than FBX when working with Octane specific data as it provides a flexible, application independent format. ORBX is a container format that includes all animation data, models, textures etc. that is needed to transfer an Octane scene from one application to another. may not work correctly for some languages (Traditional Chinese for example).

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