- OpenSubdiv does not support:
- non-manifold meshes
Maya automatically defaults to Maya Catmull-Clark for meshes that contain non-manifold components.
When OpenSubdiv cannot be used, an error message appears in the Script Editor and the polyShape node, indicating that the Maya Catmull-Clark subdivision method is active.
Note: Modeling operations can generate non-manifold components temporarily. When a non-manifold mesh becomes manifold, the warning messages disappear and the subdivision method automatically switches to OpenSubdiv. - vector displacement maps in tangent space (vector displacement maps in global space are supported)
- explicit tiles
- non-manifold meshes
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OpenSubdiv Catmull-Clark Adaptive is only supported by Windows and Linux when using OpenGL 4 and DirectX11 compatible graphics cards.
Maya automatically defaults to Maya Catmull-Clark when OpenGL 4 is not supported.
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OpenSubdiv Catmull-Clark Adaptive uses its own hardware shaders.
Adaptive subdivision overrides any applied shaders and generates its own for visualization in the viewport. The applied shaders are used when you perform a software render.
- Visualizing tessellation with OpenSubdiv Catmull-Clark Adaptive is only supported in the Legacy Default Viewport. (When OpenSubdiv Camtull-Clark Adaptive is on, turn on Display Subdivisions and adjust the Adaptive Tessellation Level to see results in the Legacy Default Viewport.)
- The
Show Displacements option in the
OpenSubdiv Controls is only supported by WIndows and Linux when using OpenGL 4 and DirectX 11 compatible graphics cards.
When Show Displacements is supported and turned on, only a subset of the material properties are displayed (basic coloring and a diffuse texture).