<!-- SOLIDIVISM · part 197 -->
rendered.
	 * @param {number} maxVertexCount - The maximum number of vertices to be used by all unique geometries.
	 * @param {number} [maxIndexCount=maxVertexCount*2] - The maximum number of indices to be used by all unique geometries
	 * @param {Material|Array<Material>} [material] - The mesh material.
	 */
	constructor( maxInstanceCount, maxVertexCount, maxIndexCount = maxVertexCount * 2, material ) {

		super( new BufferGeometry(), material );

		/**
		 * This flag can be used for type testing.
		 *
		 * @type {boolean}
		 * @readonly
		 * @default true
		 */
		this.isBatchedMesh = true;

		/**
		 * When set ot `true`, the individual objects of a batch are frustum culled.
		 *
		 * @type {boolean}
		 * @default true
		 */
		this.perObjectFrustumCulled = true;

		/**
		 * When set to `true`, the individual objects of a batch are sorted to improve overdraw-related artifacts.
		 * If the material is marked as "transparent" objects are rendered back to front and if not then they are
		 * rendered front to back.
		 *
		 * @type {boolean}
		 * @default true
		 */
		this.sortObjects = true;

		/**
		 * The bounding box of the batched mesh. Can be computed via {@link BatchedMesh#computeBoundingBox}.
		 *
		 * @type {?Box3}
		 * @default null
		 */
		this.boundingBox = null;

		/**
		 * The bounding sphere of the batched mesh. Can be computed via {@link BatchedMesh#computeBoundingSphere}.
		 *
		 * @type {?Sphere}
		 * @default null
		 */
		this.boundingSphere = null;

		/**
		 * Takes a sort a function that is run before render. The function takes a list of instances to
		 * sort and a camera. The objects in the list include a "z" field to perform a depth-ordered
		 * sort with.
		 *
		 * @type {?Function}
		 * @default null
		 */
		this.customSort = null;

		// stores visible, active, and geometry id per instance and reserved buffer ranges for geometries
		this._instanceInfo = [];
		this._geometryInfo = [];

		// instance, geometry ids that have been set as inactive, and are available to be overwritten
		this._availableInstanceIds = [];
		this._availableGeometryIds = [];

		// used to track where the next point is that geometry should be inserted
		this._nextIndexStart = 0;
		this._nextVertexStart = 0;
		this._geometryCount = 0;

		// flags
		this._visibilityChanged = true;
		this._geometryInitialized = false;

		// cached user options
		this._maxInstanceCount = maxInstanceCount;
		this._maxVertexCount = maxVertexCount;
		this._maxIndexCount = maxIndexCount;

		// buffers for multi draw
		this._multiDrawCounts = new Int32Array( maxInstanceCount );
		this._multiDrawStarts = new Int32Array( maxInstanceCount );
		this._multiDrawCount = 0;
		this._multiDrawBytesPerElement = 1;

		// Local matrix per geometry by using data texture
		this._matricesTexture = null;
		this._indirectTexture = null;
		this._colorsTexture = null;

		this._initMatricesTexture();
		this._initIndirectTexture();

	}

	/**
	 * The maximum number of individual instances that can be stored in the batch.
	 *
	 * @type {number}
	 * @readonly
	 */
	get maxInstanceCount() {

		return this._maxInstanceCount;

	}

	/**
	 * The instance count.
	 *
	 * @type {number}
	 * @readonly
	 */
	get instanceCount() {

		return this._instanceInfo.length - this._availableInstanceIds.length;

	}

	/**
	 * The number of unused vertices.
	 *
	 * @type {number}
	 * @readonly
	 */
	get unusedVertexCount() {

		return this._maxVertexCount - this._nextVertexStart;

	}

	/**
	 * The number of unused indices.
	 *
	 * @type {number}
	 * @readonly
	 */
	get unusedIndexCount() {

		return this._maxIndexCount - this._nextIndexStart;

	}

	_initMatricesTexture() {

		// layout (1 matrix = 4 pixels)
		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
		//  with  8x8  pixel texture max   16 matrices * 4 pixels =  (8 * 8)
		//       16x16 pixel texture max   64 matrices * 4 pixels = (16 * 16)
		//       32x32 pixel texture max  256 matrices * 4 pixels = (32 * 32)
		//       64x64 pixel texture max 1024 matrices * 4 pixels = (64 * 64)

		let size = Math.sqrt( this._maxInstanceCount * 4 ); // 4 pixels needed for 1 matrix
		size = Math.ceil( size / 4 ) * 4;
		size = Math.max( size, 4 );

		const matricesArray = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
		const matricesTexture = new DataTexture( matricesArray, size, size, RGBAFormat, FloatType );

		this._matricesTexture = matricesTexture;

	}

	_initIndirectTexture() {

		let size = Math.sqrt( this._maxInstanceCount );
		size = Math.ceil( size );

		const indirectArray = new Uint32Array( size * size );
		const indirectTexture = new DataTexture( indirectArray, size, size, RedIntegerFormat, UnsignedIntType );

		this._indirectTexture = indirectTexture;

	}

	_initColorsTexture() {

		let size = Math.sqrt( this._maxInstanceCount );
		size = Math.ceil( size );

		// 4 floats per RGBA pixel initialized to white
		const colorsArray = new Float32Array( size * size * 4