rive-app / rive-app/rive-flutter
Low animation quality when rotating using Rive’s native renderer (works fine with Flutter renderer)
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- Dominant language
- Dart
- Stars
- 1.5k
- Forks
- 240
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Description
Description
When using a Rive animation inside a container (in my case, a cup object), the animation quality becomes extremely poor when the cup is moved or transformed. The issue only occurs when using the native Rive renderer — the animation looks sharp and smooth when rendered using Flutter’s built-in renderer.
I’ve attached two videos for comparison:
- Video 1: Rive animation rendered with Flutter’s renderer (good quality)
- Video 2: Rive animation rendered with Rive’s native renderer (blurry / low-quality result)
Steps To Reproduce
- Place a
.rivanimation inside a container widget. - Move or transform the container (e.g., translate, scale, or rotate).
- Observe the animation quality degradation with the native renderer.
- Switch to Flutter’s renderer — the issue disappears.
Source .riv/.rev file
I can provide both .riv and .rev files privately if needed.
Expected behavior
The animation should maintain the same visual quality when the parent container is moved, regardless of whether it’s rendered via Flutter’s renderer or the native Rive renderer.
Screenshots / Videos
https://github.com/user-attachments/assets/87f9d509-18bd-4867-abd7-2bda20671b01
https://github.com/user-attachments/assets/151f30bf-3553-4291-9591-21954d460014
Device & Versions
- Device: Windows / Android / iOS
- Flutter Version: 3.35.6
Contributor guide
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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
Start with the reported reproduction: place the provided .riv/.rev animation in a container, then move, scale, or rotate it using the native and Flutter renderers. Compare the attached videos and verify that the native renderer preserves visual quality during transformations across the listed Windows, Android, and iOS environments.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- dart, flutter
- Domain
- computer-graphics
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100