USD for Autodesk 3ds Max version 0.3 is a feature release compatible with 3ds Max 2023. For important legal information about this version, please refer to the following: About USD for 3ds Max.
USD for Autodesk 3ds Max version 0.3 is a discontinued release and is unavailable for download from your Autodesk account.
The following features are available with USD for 3ds Max 0.3 (See USD Exporter and create a USD stage reference to learn more):
| USD Exporter and USD Importer Limitations |
|---|
| Texture graphs are not supported, only direct bitmap inputs are supported in the USD Exporter, Importer and Stage. |
| Skin and Morpher are unsupported (USDSkel). |
| Motion Blur data is unsupported. |
| USD Importer does not import animations. |
| USD Blend Shapes Limitations |
|---|
| Morph targets export with USD blendshapes, but skinning information may not properly display in USDView. If you use 3ds Max 2023 or below, this issue presents in USDView. Workaround: Set the Windows Environment variable to: USDSKELIMAGING_FORCE_CPU_COMPUTE=1. |
| USD cannot resolve the modifier stack like morphers. Any morpher modifier is expected to be below the Skin modifier when they both are present in a 3ds Max node. A warning presents when this hierarchy is incorrect. |
| USD Skel does not support faceVarying Normals. This extends to other features that use USD Skel (including Morpher). |
| USD Stage Object Limitations |
|---|
| The USD Stage Object will not display lights, cameras or shapes in the viewport. |
| Most modifiers will have no effect on a USD Stage Object. |
| Rendering support for the stage is dependent on each renderer. See the rendering section for more information. |
| The Source Start and Source End labels in the animation rollout are expressed in USD TimeCodes, however the UI displays the label Source FPS (frames per second) when it should indicate Source "TimeCodes per second", for clarity. The two can be different and hence, it should be noted that any source animation metadata is in USD timecodes. |
| MaterialX Limitations |
|---|
| 3ds Max 2022: MaterialX materials on a USD Stage reference cannot be displayed in Nitrous (Viewport) nor using Arnold as a renderer. |
| For USDView bundled with 3ds Max 2022 and 2023: when exporting or viewing an existing .usd file with MaterialX data present, the viewport in USDView will be black and unusable. |
| Loss of parameters when exporting MaterialX material. In maps, for example: subsurface_scale value is lost. |
| MaterialX samples have unexpected UV stretching. For example at the equator of a sphere prim. Workaround: Edit the MaterialX file's UVs manually using 'Explode Permanently'. However, in this technique, the material becomes an OSL composite representing the MaterialX file rather than a true MaterialX sample. |
| Importing USD files when MaterialX is present in the data can result in a failure to import all Materials (like USD Preview Surface). |
| USDZ format cannot export MaterialX data as part of the USDZ framework. See USDZ specifications. |