---
title: SCNGeometrySource.Semantic
framework: scenekit
role: symbol
role_heading: Structure
path: scenekit/scngeometrysource/semantic-swift.struct
---

# SCNGeometrySource.Semantic

## Declaration

```swift
struct Semantic
```

## Topics

### Basic Geometry Semantics

- [vertex](scenekit/scngeometrysource/semantic-swift.struct/vertex.md)
- [normal](scenekit/scngeometrysource/semantic-swift.struct/normal.md)
- [texcoord](scenekit/scngeometrysource/semantic-swift.struct/texcoord.md)

### Advanced Shading Semantics

- [color](scenekit/scngeometrysource/semantic-swift.struct/color.md)
- [tangent](scenekit/scngeometrysource/semantic-swift.struct/tangent.md)

### Surface Subdivision Semantics

- [edgeCrease](scenekit/scngeometrysource/semantic-swift.struct/edgecrease.md)
- [vertexCrease](scenekit/scngeometrysource/semantic-swift.struct/vertexcrease.md)

### Skeletal Animation Semantics

- [boneIndices](scenekit/scngeometrysource/semantic-swift.struct/boneindices.md)
- [boneWeights](scenekit/scngeometrysource/semantic-swift.struct/boneweights.md)

### Initializers

- [init(_:)](scenekit/scngeometrysource/semantic-swift.struct/init(_:).md)
- [init(rawValue:)](scenekit/scngeometrysource/semantic-swift.struct/init(rawvalue:).md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [RawRepresentable](swift/rawrepresentable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)