Supported USD Primitive Types

USD is an extensive library, and below we have provided a table of the default USD primitive types and whether we support reading them into a Katana project. This does not describe what kind of support renderers or the viewport have in relation to these, just whether we support reading them from USD files into scene graph locations. It is worth noting that we import more types than those listed here, as there is generic type importing where we read any attribute set on a USD node. However, this is a list of the types we handle with specific definitions or attributes, especially those types which correspond to Katana attribute conventions.

Cameras

PrimName

Supported

Detail

UsdGeomCamera

Yes

Curves

PrimName

Supported

Detail

UsdGeomBasisCurves

Yes

Supported basis’ bezier, (b-spline, catmull-rom, hermite, power), if default renderer is RenderMan, we set basis under prmanStatements.basis.u and prmanStatements.basis.v (as per USD 19.05 original KatanaUsdPlugins), otherwise we set the correct integer value on geometry.basis

UsdGeomNurbsCurves

Yes

UsdGeomCurves

Yes

This is the base class for UsdGeomBasisCurves and UsdGeomNurbsCurves.

Geometry

PrimName

Supported

Detail

UsdGeomCapsule

Yes

UsdGeomCone

Yes

UsdGeomCube

Yes

UsdGeomCylinder

Yes

UsdGeomGprim

Yes

UsdGeomMesh

Yes

UsdGeomNurbsPatch

Yes

UsdGeomPointInstancer

Yes

UsdGeomScope

Yes

UsdGeomSphere

Yes

UsdGeomXForm

Yes

Lights

PrimName

Supported

Detail

UsdLuxDiskLight

Yes

parameters under usdLuxLightParams, shader type under usdLightShader

UsdLuxDistantLight

Yes

parameters under usdLuxLightParams, shader type under usdLightShader

UsdLuxDomeLight

Yes

parameters under usdLuxLightParams, shader type under usdLightShader

UsdLuxGeometryLight

Yes

parameters under usdLuxLightParams, shader type under usdLightShader

UsdLuxMeshLight

Yes

parameters under usdLuxLightParams, shader type under usdLightShader

UsdLuxRectLight

Yes

parameters under usdLuxLightParams, shader type under usdLightShader

Lights - UsdRi

PrimName

Supported

Detail

UsdRiPxrEnvDayLight

Yes

UsdRiPxrAovLight

Yes

Light Filters

PrimName

Supported

Detail

UsdLuxLightFilter

Yes

Base class for the UsdRi light filters, not read by itself currently

UsdRiPxrBarnLightFilter

Yes

UsdRiPxrCookieLightFilter

Yes

UsdRiPxrIntMultLightFilter

Yes

UsdRiPxrRampLightFilter

Yes

UsdRiPxrRodLightFilter

Yes