The PrmanObjectStatements is assigned to a specific location or group of locations and translates into prman as setting the state for an AttributeBegin/AttributeEnd
block. This node allows you to do things like assign a subdivision approximation to objects to render smooth surfaces, apply a displacement bound for rendering displacements, and changing visibility flags and memberships.
In RenderMan, there are different ways to choose how your object and its instances will render. These are conveniently divided in the node. An explanation is below along with links to the relevant settings.
The Attributes Section allows for variation among instances.
The primAttributes are obeyed for all instances.
The Primvars Section contains a control for rendering points.
In RfK21 the PrmanObjectStatements node had only a single "attributes" section for all RenderMan attribuates. For RenderMan 22 this section has been divided according to "attributes", "prim attributes and "primvars" to align with their usage and affect on the object to which the node is assigned. As a result several RenderMan attributes have a new attribute hierarchy in 22. See the tables below for a list of attributes which have changed from 21 to 22.
RfK 21 Attribute Name | RfK 22 Attribute Name | Note |
---|---|---|
.matte | .attributes.Matte | Capitalization changed |
.sides | .attributes.Sides | Capitalization changed |
.scopedCoordinateSystem | .attributes.scopedCoordinateSystem |
|
RfK 21 Attribute Name | RfK 22 Attribute Name | Note |
---|---|---|
.geometricApproximation.motionfactor | .primAttributes.geometricApproximation.motionfactor | |
.geometricApproximation.focusfactor | .primAttributes.geometricApproximation.focusfactor | |
.geometry.flip_t | .primAttributes.geometry.flip_t | |
.subdivisionMesh.scheme | .primAttributes.subdivisionMesh.scheme | |
.orientation | .primAttributes.Orientation | Capitalization changed Also, see note below 1 |
RfK 21 Attribute Name | RfK 22 Attribute Name | Note |
---|---|---|
.attributes.curve.basis | .primAttributes.curve.basis | See note below 2 |
.attributes.derivatives.extrapolate | .primAttributes.derivatives.extrapolate | |
.attributes.dice | .primAttributes.dice | |
.attributes.displacementbound.sphere | .primAttributes.displacementbound.sphere | |
.attributes.displacementbound.coordinatesystem | .primAttributes.displacementbound.coordinatesystem | |
.attributes.displacementbound.offscreen | .primAttributes.displacementbound.offscreen | |
.attributes.polygon | .primAttributes.polygon | |
.attributes.procedural | .primAttributes.procedural | |
.attributes.trimcurve | .primAttributes.trimcurve | |
.attributes.shade | .primAttributes.shade | |
.attributes.trace.autobias | .primAttributes.trace.autobias | |
.attributes.trace.bias | .primAttributes.trace.bias | |
.attributes.trace.samplemotion | .primAttributes.trace.samplemotion |