Chapter 508: VaryingNode

Core Idea

Class for representing shader varyings as nodes. Varyings are create from existing nodes like the following:

Key Concepts

• global : boolean: This flag is used for global cache.
• interpolationSampling : string: The interpolation sampling type of varying data.
• interpolationType : string: The interpolation type of the varying data.
• isVaryingNode : boolean (readonly): This flag can be used for type testing.
• name : string: The name of the varying in the shader. If no name is defined, the node system auto-generates one.
• node : Node: The node for which a varying should be created.

Code Examples

const positionLocal = positionGeometry.toVarying( 'vPositionLocal' );

• What it demonstrates: Typical usage of VaryingNode.

Reference Tables

Constructor

Signature
new VaryingNode( node : Node, name : string )

Properties

Property	Description
.global : boolean	This flag is used for global cache.
.interpolationSampling : string	The interpolation sampling type of varying data.
.interpolationType : string	The interpolation type of the varying data.
.isVaryingNode : boolean (readonly)	This flag can be used for type testing.
.name : string	The name of the varying in the shader. If no name is defined, the node system auto-generates one.
.node : Node	The node for which a varying should be created.

Methods

Method	Description
.setInterpolation( type : string, sampling : string ) : VaryingNode	Defines the interpolation type of the varying.
.setupVarying( builder : NodeBuilder ) : NodeVarying	This method performs the setup of a varying node with the current node builder.

Key Takeaways

1. VaryingNode extends: EventDispatcher → Node
2. Most relevant properties: global, interpolationSampling, interpolationType, isVaryingNode.
3. Key methods: setInterpolation, setupVarying.

Connects To

• EventDispatcher: parent class
• Node: parent class
• Source: src/nodes/core/VaryingNode.js