transformOrigin produces incorrect results on android
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Description
Description
Transforming a view with perspective and transformOrigin to achieve 3d-effects is working perfectly on iOS, but not on android.
This has probably something to do with the normalization of camera perspectives: https://github.com/facebook/react-native/blob/7b7c45030ba6ae196b89f0fb8615d184a261cd4a/packages/react-native/ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java#L599
I would be very thankful for possible workarounds.
Steps to reproduce
- Create a RN App using cli or Expo
- Add a View which is transformed with origin and perspective
const {width, height} = Dimensions.get('window');
export default function App() {
return (
<View
style={{
width,
height,
backgroundColor: 'red',
transformOrigin: [0, height / 2, 0],
transform: [
{perspective: width},
{rotateY: '45deg'}],
}}>
<Text>test</Text>
</View>
);
}```
### React Native Version
0.77.0
### Affected Platforms
Runtime - Android
### Output of `npx react-native info`
```text
System:
OS: macOS 15.3
CPU: (14) arm64 Apple M3 Max
Memory: 101.89 MB / 36.00 GB
Shell:
version: "5.9"
path: /bin/zsh
Binaries:
Node:
version: 21.4.0
path: ~/.nodenv/versions/21.4.0/bin/node
Yarn:
version: 1.22.21
path: ~/.nodenv/versions/21.4.0/bin/yarn
npm:
version: 10.2.4
path: ~/.nodenv/versions/21.4.0/bin/npm
Watchman:
version: 2024.12.02.00
path: /opt/homebrew/bin/watchman
Managers:
CocoaPods:
version: 1.16.2
path: /opt/homebrew/bin/pod
SDKs:
iOS SDK:
Platforms:
- DriverKit 24.2
- iOS 18.2
- macOS 15.2
- tvOS 18.2
- visionOS 2.2
- watchOS 11.2
Android SDK:
API Levels:
- "31"
- "33"
- "34"
- "35"
Build Tools:
- 30.0.3
- 31.0.0
- 33.0.0
- 33.0.1
- 34.0.0
- 35.0.0
System Images:
- android-34 | Google APIs ARM 64 v8a
- android-34 | Google Play ARM 64 v8a
Android NDK: Not Found
IDEs:
Android Studio: 2024.2 AI-242.23726.103.2422.12816248
Xcode:
version: 16.2/16C5032a
path: /usr/bin/xcodebuild
Languages:
Java:
version: 17.0.10
path: /Users/take/.sdkman/candidates/java/current/bin/javac
Ruby:
version: 2.6.10
path: /usr/bin/ruby
npmPackages:
"@react-native-community/cli":
installed: 15.0.1
wanted: 15.0.1
react:
installed: 18.3.1
wanted: 18.3.1
react-native:
installed: 0.77.0
wanted: 0.77.0
react-native-macos: Not Found
npmGlobalPackages:
"*react-native*": Not Found
Android:
hermesEnabled: true
newArchEnabled: true
iOS:
hermesEnabled: Not found
newArchEnabled: false
Stacktrace or Logs
no stacktrace
Reproducer
https://snack.expo.dev/TUuheLubQqqLvtaHBxTR8
Screenshots and Videos
iOS: android:
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Reproduce the Android and iOS difference with the linked Expo Snack using React Native 0.77.0. Start by inspecting ReactAndroid/src/main/java/com/facebook/react/uimanager/BaseViewManager.java around line 599, where perspective normalization is suspected. Compare the resulting transform behavior across platforms; done means transformOrigin and perspective produce matching 3D results on Android.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java, javascript, react-native
- Domain
- mobile
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100