Swift 5 UIImage extension to round corners using UIGraphicsImageRendererFormat to render

UIImage+RoundedCorners.swift

//
//  Created by Andrew Podkovyrin
//  Copyright © 2020 Andrew Podkovyrin. All rights reserved.
//
//  Licensed under the MIT License (the "License");
//  you may not use this file except in compliance with the License.
//  You may obtain a copy of the License at
//
//  https://opensource.org/licenses/MIT
//
//  Unless required by applicable law or agreed to in writing, software
//  distributed under the License is distributed on an "AS IS" BASIS,
//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//  See the License for the specific language governing permissions and
//  limitations under the License.
//

import UIKit

extension UIImage {
    func roundedCornerImage(with radius: CGFloat) -> UIImage {
        let format = UIGraphicsImageRendererFormat()
        format.scale = scale
        let renderer = UIGraphicsImageRenderer(size: size, format: format)
        return renderer.image { rendererContext in
            let rect = CGRect(origin: .zero, size: size)
            let path = UIBezierPath(roundedRect: rect,
                                    byRoundingCorners: .allCorners,
                                    cornerRadii: CGSize(width: radius, height: radius))
            path.close()

            let cgContext = rendererContext.cgContext
            cgContext.saveGState()
            path.addClip()
            draw(in: rect)
            cgContext.restoreGState()
        }
    }
}