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Mention the point of BlendMode.plus and advise on using it. #44189

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Jul 31, 2023
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Mention the point of BlendMode.plus and advise on using it. #44189

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6 changes: 6 additions & 0 deletions lib/ui/painting.dart
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Expand Up @@ -544,6 +544,12 @@ enum BlendMode {
///
/// This corresponds to the "Source plus Destination" Porter-Duff operator.
///
/// This is the right blend mode for cross-fading between two images. Consider
/// two images A and B, and an interpolation time variable _t_ (from 0.0 to
/// 1.0). To cross fade between them, A should be drawn with opacity 1.0 - _t_
/// into a new layer using [BlendMode.srcOver], and B should be drawn on top
/// of it, at opacity _t_, into the same layer, using [BlendMode.plus].
///
/// ![](https://flutter.github.io/assets-for-api-docs/assets/dart-ui/blend_mode_plus.png)
plus,

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