Accueil / npm / three@0.172.0 / src / renderers / common / Buffer.js
Buffer.js
import Binding from './Binding.js';
import { getFloatLength } from './BufferUtils.js';
/**
* Represents a buffer binding type.
*
* @private
* @abstract
* @augments Binding
*/
class Buffer extends Binding {
/**
* Constructs a new buffer.
*
* @param {String} name - The buffer's name.
* @param {TypedArray} [buffer=null] - The buffer.
*/
constructor( name, buffer = null ) {
super( name );
/**
* This flag can be used for type testing.
*
* @type {Boolean}
* @readonly
* @default true
*/
this.isBuffer = true;
/**
* The bytes per element.
*
* @type {Number}
*/
this.bytesPerElement = Float32Array.BYTES_PER_ELEMENT;
/**
* A reference to the internal buffer.
*
* @private
* @type {TypedArray}
*/
this._buffer = buffer;
}
/**
* The buffer's byte length.
*
* @type {Number}
* @readonly
*/
get byteLength() {
return getFloatLength( this._buffer.byteLength );
}
/**
* A reference to the internal buffer.
*
* @type {Float32Array}
* @readonly
*/
get buffer() {
return this._buffer;
}
/**
* Updates the binding.
*
* @return {Boolean} Whether the buffer has been updated and must be
* uploaded to the GPU.
*/
update() {
return true;
}
}
export default Buffer;