<!-- SOLIDIVISM · part 403 -->
	const attributeDivisors = [];

		for ( let i = 0; i < maxVertexAttributes; i ++ ) {

			newAttributes[ i ] = 0;
			enabledAttributes[ i ] = 0;
			attributeDivisors[ i ] = 0;

		}

		return {

			// for backward compatibility on non-VAO support browser
			geometry: null,
			program: null,
			wireframe: false,

			newAttributes: newAttributes,
			enabledAttributes: enabledAttributes,
			attributeDivisors: attributeDivisors,
			object: vao,
			attributes: {},
			index: null

		};

	}

	function needsUpdate( object, geometry, program, index ) {

		const cachedAttributes = currentState.attributes;
		const geometryAttributes = geometry.attributes;

		let attributesNum = 0;

		const programAttributes = program.getAttributes();

		for ( const name in programAttributes ) {

			const programAttribute = programAttributes[ name ];

			if ( programAttribute.location >= 0 ) {

				const cachedAttribute = cachedAttributes[ name ];
				let geometryAttribute = geometryAttributes[ name ];

				if ( geometryAttribute === undefined ) {

					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;

				}

				if ( cachedAttribute === undefined ) return true;

				if ( cachedAttribute.attribute !== geometryAttribute ) return true;

				if ( geometryAttribute && cachedAttribute.data !== geometryAttribute.data ) return true;

				attributesNum ++;

			}

		}

		if ( currentState.attributesNum !== attributesNum ) return true;

		if ( currentState.index !== index ) return true;

		return false;

	}

	function saveCache( object, geometry, program, index ) {

		const cache = {};
		const attributes = geometry.attributes;
		let attributesNum = 0;

		const programAttributes = program.getAttributes();

		for ( const name in programAttributes ) {

			const programAttribute = programAttributes[ name ];

			if ( programAttribute.location >= 0 ) {

				let attribute = attributes[ name ];

				if ( attribute === undefined ) {

					if ( name === 'instanceMatrix' && object.instanceMatrix ) attribute = object.instanceMatrix;
					if ( name === 'instanceColor' && object.instanceColor ) attribute = object.instanceColor;

				}

				const data = {};
				data.attribute = attribute;

				if ( attribute && attribute.data ) {

					data.data = attribute.data;

				}

				cache[ name ] = data;

				attributesNum ++;

			}

		}

		currentState.attributes = cache;
		currentState.attributesNum = attributesNum;

		currentState.index = index;

	}

	function initAttributes() {

		const newAttributes = currentState.newAttributes;

		for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {

			newAttributes[ i ] = 0;

		}

	}

	function enableAttribute( attribute ) {

		enableAttributeAndDivisor( attribute, 0 );

	}

	function enableAttributeAndDivisor( attribute, meshPerAttribute ) {

		const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;
		const attributeDivisors = currentState.attributeDivisors;

		newAttributes[ attribute ] = 1;

		if ( enabledAttributes[ attribute ] === 0 ) {

			gl.enableVertexAttribArray( attribute );
			enabledAttributes[ attribute ] = 1;

		}

		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {

			gl.vertexAttribDivisor( attribute, meshPerAttribute );
			attributeDivisors[ attribute ] = meshPerAttribute;

		}

	}

	function disableUnusedAttributes() {

		const newAttributes = currentState.newAttributes;
		const enabledAttributes = currentState.enabledAttributes;

		for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {

			if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {

				gl.disableVertexAttribArray( i );
				enabledAttributes[ i ] = 0;

			}

		}

	}

	function vertexAttribPointer( index, size, type, normalized, stride, offset, integer ) {

		if ( integer === true ) {

			gl.vertexAttribIPointer( index, size, type, stride, offset );

		} else {

			gl.vertexAttribPointer( index, size, type, normalized, stride, offset );

		}

	}

	function setupVertexAttributes( object, material, program, geometry ) {

		initAttributes();

		const geometryAttributes = geometry.attributes;

		const programAttributes = program.getAttributes();

		const materialDefaultAttributeValues = material.defaultAttributeValues;

		for ( const name in programAttributes ) {

			const programAttribute = programAttributes[ name ];

			if ( programAttribute.location >= 0 ) {

				let geometryAttribute = geometryAttributes[ name ];

				if ( geometryAttribute === undefined ) {

					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;

				}

				if ( geometryAttribute !== undefined ) {

					const normalized = geometryAttribute.normalized;
					const