<!--
{
  "availability" : [
    "macOS: 10.4.0 - 10.15.0"
  ],
  "documentType" : "symbol",
  "framework" : "Quartz",
  "identifier" : "/documentation/Quartz/QCCompositionProtocolGraphicTransition",
  "metadataVersion" : "0.1.0",
  "role" : "Global Variable",
  "symbol" : {
    "kind" : "Global Variable",
    "modules" : [
      "Quartz"
    ],
    "preciseIdentifier" : "c:@QCCompositionProtocolGraphicTransition"
  },
  "title" : "QCCompositionProtocolGraphicTransition"
}
-->

# QCCompositionProtocolGraphicTransition

A  composition that performs a transition between two images, using a transition time in range of `0` to `1`. A conforming composition must use the input keys [`QCCompositionInputSourceImageKey`](/documentation/Quartz/QCCompositionInputSourceImageKey) for the starting image and [`QCCompositionInputDestinationImageKey`](/documentation/Quartz/QCCompositionInputDestinationImageKey) for the image to transition to. The composition can optionally use [`QCCompositionInputPreviewModeKey`](/documentation/Quartz/QCCompositionInputPreviewModeKey) to indicate if the animation should run in lower-quality for preview purposes.

```
let QCCompositionProtocolGraphicTransition: String
```

---

Copyright &copy; 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)