getPaddedType() {

		const elementType = this.elementType;

		let paddedType = 'vec4';

		if ( elementType === 'mat2' ) {

			paddedType = 'mat2';

		} else if ( /mat/.test( elementType ) === true ) {

			paddedType = 'mat4';

		} else if ( elementType.charAt( 0 ) === 'i' ) {

			paddedType = 'ivec4';

		} else if ( elementType.charAt( 0 ) === 'u' ) {

			paddedType = 'uvec4';

		}

		return paddedType;

	}
Returns the padded type based on the element type.

@return {string} The padded type.