Sdf (scene description foundation)

E853480

USD component core library software library

Sdf (Scene Description Foundation) is a core library in Pixar’s Universal Scene Description (USD) framework that provides the fundamental data structures and APIs for representing, composing, and querying scene graph data.

Try in SPARQL Jump to: Surface forms Disambiguation Statements Elicitation Referenced by

All labels observed (7)

Label	Occurrences
Sdf (Scene Description Foundation)	1
Sdf (scene description foundation) canonical	1
SdfAttributeSpec	1
SdfLayer	1
SdfPrimSpec	1
SdfVariantSetSpec	1
SdfVariantSpec	1

How this entity was disambiguated

This entity first appeared as the object of triple T10241186 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: Sdf (scene description foundation)
Context triple: [USD, component, Sdf (scene description foundation)]

A. SDF
SDF is the IATA airport code for Louisville Muhammad Ali International Airport, a major air cargo and passenger hub serving Louisville, Kentucky.
B. SDF
The SDF (Syrian Democratic Forces) is a multi-ethnic, Kurdish-led military alliance in Syria that has been a primary ground force against ISIS and a key armed wing of the Autonomous Administration of North and East Syria.
C. SDF
SDF is the acronym for the SAARC Development Fund, a regional financial institution that supports social, economic, and infrastructure development projects among South Asian Association for Regional Cooperation member countries.
D. Universal Scene Description
Universal Scene Description (USD) is an open-source 3D scene description and interchange framework developed by Pixar, widely used for creating, composing, and collaborating on complex digital scenes across different tools and pipelines.
E. OpenUSD
OpenUSD is an open-source framework and file format developed by Pixar for creating, composing, and exchanging complex 3D scenes across diverse digital content creation tools and pipelines.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: Sdf (scene description foundation)
Target entity description: Sdf (Scene Description Foundation) is a core library in Pixar’s Universal Scene Description (USD) framework that provides the fundamental data structures and APIs for representing, composing, and querying scene graph data.

A. SDF
SDF is the IATA airport code for Louisville Muhammad Ali International Airport, a major air cargo and passenger hub serving Louisville, Kentucky.
B. SDF
The SDF (Syrian Democratic Forces) is a multi-ethnic, Kurdish-led military alliance in Syria that has been a primary ground force against ISIS and a key armed wing of the Autonomous Administration of North and East Syria.
C. SDF
SDF is the acronym for the SAARC Development Fund, a regional financial institution that supports social, economic, and infrastructure development projects among South Asian Association for Regional Cooperation member countries.
D. Universal Scene Description
Universal Scene Description (USD) is an open-source 3D scene description and interchange framework developed by Pixar, widely used for creating, composing, and collaborating on complex digital scenes across different tools and pipelines.
E. OpenUSD
OpenUSD is an open-source framework and file format developed by Pixar for creating, composing, and exchanging complex 3D scenes across diverse digital content creation tools and pipelines.
F. None of above. chosen

Statements (49)

Predicate	Object
instanceOf	USD component ⓘ core library ⓘ software library ⓘ
defines	SdfAttributeSpec ⓘ linked to: Sdf (scene description foundation) SdfLayer ⓘ linked to: Sdf (scene description foundation) SdfPath ⓘ SdfPayload ⓘ SdfPrimSpec ⓘ linked to: Sdf (scene description foundation) SdfReference ⓘ SdfRelationshipSpec ⓘ SdfValueTypeName ⓘ SdfVariantSetSpec ⓘ linked to: Sdf (scene description foundation) SdfVariantSpec ⓘ linked to: Sdf (scene description foundation)
developedBy	Pixar ⓘ linked to: Pixar Animation Studios
distributedWith	USD SDK ⓘ
domain	scene description ⓘ
fullName	Scene Description Foundation ⓘ
language	C++ ⓘ
license	Open source ⓘ
partOf	USD ⓘ Universal Scene Description ⓘ
provides	APIs for scene composition ⓘ APIs for scene description ⓘ APIs for scene querying ⓘ file format abstraction ⓘ fundamental data structures ⓘ
supports	USD layer metadata ⓘ asset path resolution (via higher USD layers) ⓘ attributes ⓘ composition arcs ⓘ default values ⓘ inheritance ⓘ layer-based scene description ⓘ payloads ⓘ prims ⓘ references ⓘ relationships ⓘ scene graph representation ⓘ specializes ⓘ time-sampled data ⓘ variants ⓘ
usedBy	Usd ⓘ UsdGeom ⓘ UsdLux ⓘ UsdShade ⓘ linked to: UsdShadeMaterial schema UsdSkel ⓘ
usedIn	3D content creation ⓘ computer graphics ⓘ visual effects ⓘ