# vImage.BlendMode.screen Sets the destination pixel as the inverted product of the inverted corresponding source pixels. ``` case screen ``` ## Discussion The following image shows the result of compositing using the screen blend mode:  The bottom-right quadrant in the result is identical to the corresponding quadrant in the bottom layer because the operation multiplies each bottom-layer pixel value by `1.0`. For example, if the source pixel value is `0.5`, the destination pixel value is `0.5`: ```swift dest = 1 - (1 - 0.5) * (1 - 0.0) // dest = 0.5 ``` The top-right quadrant in the result is brighter than the corresponding quadrant in the bottom layer. In this quadrant, the top-layer and bottom-layer pixel values are identical. For example, if the source pixel value is `0.5`, the destination pixel value is `0.75`: ```swift dest = 1 - (1 - 0.5) * (1 - 0.5) // dest = 0.75 ``` ## See Also --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)