---
title: additionCompositing()
framework: coreimage
role: symbol
role_heading: Type Method
path: coreimage/cifilter-swift.class/additioncompositing()
---

# additionCompositing()

Blends colors from two images by addition.

## Declaration

```swift
class func additionCompositing() -> any CIFilter & CICompositeOperation
```

## Mentioned in

Selectively Focusing on an Image

## Return Value

Return Value The modified image.

## Discussion

Discussion The filter calculates the sum of color components in the two input images to produce a brightening effect. People typically use this filter to add highlights and lens flares. The addition compositing filter uses the following properties: The following code creates a filter that combines the images’ colors to produce one image: func additionCompositing(inputImage: CIImage, backgroundImage: CIImage) -> CIImage {     let additionCompositeFilter = CIFilter.additionCompositing()     additionCompositeFilter.inputImage = inputImage     additionCompositeFilter.backgroundImage = backgroundImage     return additionCompositeFilter.outputImage! }

## See Also

### Filters

- [colorBlendMode()](coreimage/cifilter-swift.class/colorblendmode().md)
- [colorBurnBlendMode()](coreimage/cifilter-swift.class/colorburnblendmode().md)
- [colorDodgeBlendMode()](coreimage/cifilter-swift.class/colordodgeblendmode().md)
- [darkenBlendMode()](coreimage/cifilter-swift.class/darkenblendmode().md)
- [differenceBlendMode()](coreimage/cifilter-swift.class/differenceblendmode().md)
- [divideBlendMode()](coreimage/cifilter-swift.class/divideblendmode().md)
- [exclusionBlendMode()](coreimage/cifilter-swift.class/exclusionblendmode().md)
- [hardLightBlendMode()](coreimage/cifilter-swift.class/hardlightblendmode().md)
- [hueBlendMode()](coreimage/cifilter-swift.class/hueblendmode().md)
- [lightenBlendMode()](coreimage/cifilter-swift.class/lightenblendmode().md)
- [linearBurnBlendMode()](coreimage/cifilter-swift.class/linearburnblendmode().md)
- [linearDodgeBlendMode()](coreimage/cifilter-swift.class/lineardodgeblendmode().md)
- [linearLightBlendMode()](coreimage/cifilter-swift.class/linearlightblendmode().md)
- [luminosityBlendMode()](coreimage/cifilter-swift.class/luminosityblendmode().md)
- [minimumCompositing()](coreimage/cifilter-swift.class/minimumcompositing().md)