EventDispatcher → Node → InputNode → UniformNode →

BufferNode

A special type of uniform node which represents array-like data as uniform buffers. The access usually happens via element() which returns an instance of ArrayElementNode. For example:

In general, it is recommended to use the more managed UniformArrayNode since it handles more input types and automatically cares about buffer paddings.

Code Example

const bufferNode = buffer( array, 'mat4', count );
const matrixNode = bufferNode.element( index ); // access a matrix from the buffer

Constructor

new BufferNode( value : Array.<number>, bufferType : string, bufferCount : number )

Constructs a new buffer node.

value

Array-like buffer data.

bufferType

The data type of the buffer.

bufferCount

The count of buffer elements.

Default is 0.

Properties

.bufferCount : number

The uniform node that holds the value of the reference node.

Default is 0.

.bufferType : string

The data type of the buffer.

.isBufferNode : boolean (readonly)

This flag can be used for type testing.

Default is true.

.updateRanges : Array.<{start: number, count: number}>

An array of update ranges.

Methods

.addUpdateRange( start : number, count : number )

Adds a range of data in the data array to be updated on the GPU.

start	Position at which to start update.
count	The number of components to update.

.clearUpdateRanges()

Clears the update ranges.

.getElementType( builder : NodeBuilder ) : string

The data type of the buffer elements.

builder

The current node builder.

Overrides: UniformNode#getElementType

Returns: The element type.

.getInputType( builder : NodeBuilder ) : string

Overwrites the default implementation to return a fixed value 'buffer'.

builder

The current node builder.

Overrides: UniformNode#getInputType

Returns: The input type.

Source

src/nodes/accessors/BufferNode.js