Using new feather feature throws RangeError

[ngoc-quoc-huynh]

Description

Using the new feather feature in rive throws a RangeError. See error log below.

======= Exception caught by rendering library =====================================================
The following RangeError was thrown during paint():
RangeError (length): Invalid value: Not in inclusive range 0..1: 2

The relevant error-causing widget was: 
  Rive Rive:file:///Users/huynh/.pub-cache/hosted/pub.dev/rive-0.13.20/lib/src/widgets/rive_animation.dart:361:9
When the exception was thrown, this was the stack: 
#0      _Array.[] (dart:core-patch/array.dart)
#1      Fill.fillType (package:rive/src/rive_core/shapes/paint/fill.dart:14:51)
#2      Fill.draw (package:rive/src/rive_core/shapes/paint/fill.dart:40:21)
#3      Shape.draw (package:rive/src/rive_core/shapes/shape.dart:254:12)
#4      Artboard.draw (package:rive/src/rive_core/artboard.dart:520:16)
#5      RiveRenderObject.draw (package:rive/src/rive.dart:400:14)
#6      RiveRenderBox.paint (package:rive/src/rive_render_box.dart:412:5)
#7      RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#8      PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#9      RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:13)
#10     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#11     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#12     RenderShiftedBox.paint (package:flutter/src/rendering/shifted_box.dart:81:15)
#13     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#14     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#15     RenderBoxContainerDefaultsMixin.defaultPaint (package:flutter/src/rendering/box.dart:3360:15)
#16     RenderCustomMultiChildLayoutBox.paint (package:flutter/src/rendering/custom_layout.dart:424:5)
#17     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#18     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#19     RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:13)
#20     _RenderInkFeatures.paint (package:flutter/src/material/material.dart:632:11)
#21     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#22     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#23     RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:13)
#24     RenderPhysicalModel.paint.<anonymous closure> (package:flutter/src/rendering/proxy_box.dart:2083:15)
#25     PaintingContext.pushClipRRect (package:flutter/src/rendering/object.dart:610:14)
#26     RenderPhysicalModel.paint (package:flutter/src/rendering/proxy_box.dart:2070:21)
#27     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#28     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#29     RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:13)
#30     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#31     PaintingContext.paintChild (package:flutter/src/rendering/object.dart:260:13)
#32     RenderProxyBoxMixin.paint (package:flutter/src/rendering/proxy_box.dart:140:13)
#33     RenderObject._paintWithContext (package:flutter/src/rendering/object.dart:3371:7)
#34     PaintingContext._repaintCompositedChild (package:flutter/src/rendering/object.dart:175:11)
#35     PaintingContext.repaintCompositedChild (package:flutter/src/rendering/object.dart:120:5)
#36     PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:1251:31)
#37     PipelineOwner.flushPaint (package:flutter/src/rendering/object.dart:1261:15)
#38     RendererBinding.drawFrame (package:flutter/src/rendering/binding.dart:618:23)
#39     WidgetsBinding.drawFrame (package:flutter/src/widgets/binding.dart:1231:13)
#40     RendererBinding._handlePersistentFrameCallback (package:flutter/src/rendering/binding.dart:482:5)
#41     SchedulerBinding._invokeFrameCallback (package:flutter/src/scheduler/binding.dart:1442:15)
#42     SchedulerBinding.handleDrawFrame (package:flutter/src/scheduler/binding.dart:1355:9)
#43     SchedulerBinding._handleDrawFrame (package:flutter/src/scheduler/binding.dart:1208:5)
#44     _invoke (dart:ui/hooks.dart:316:13)
#45     PlatformDispatcher._drawFrame (dart:ui/platform_dispatcher.dart:428:5)
#46     _drawFrame (dart:ui/hooks.dart:288:31)
The following RenderObject was being processed when the exception was fired: RiveRenderObject#a1e33
...  parentData: <none>
...  constraints: BoxConstraints(w=402.0, h=714.7)
...  size: Size(402.0, 714.7)
RenderObject: RiveRenderObject#a1e33
  parentData: <none>
  constraints: BoxConstraints(w=402.0, h=714.7)
  size: Size(402.0, 714.7)

Steps To Reproduce

Steps to reproduce the behavior:

1. Create a new artboard
2. Create a rectangle
3. Add a new fill color and enable feather
4. See error ⚠️ and red glow is not rendered

Source .riv/.rev file

untitled.zip

Expected behavior

No error should be thrown and a red glow should be displayed.

Screenshots

Output:

Expected:

Device & Versions (please complete the following information)

• Device: iOS Simulator
• OS: iOS 18.4
• Flutter Version:

Flutter 3.29.3 • channel stable • https://github.com/flutter/flutter.git
Framework • revision ea121f8859 (4 weeks ago) • 2025-04-11 19:10:07 +0000
Engine • revision cf56914b32
Tools • Dart 3.7.2 • DevTools 2.42.3

[HayesGordon]

Hi! Vector Feathering is only supported in the new Rive Native for Flutter runtime package. Which will eventually make its way to this package. You can read up more here. We encourage customers to start migrating to Rive Native if they are able too.

[HayesGordon]

rive_native is now used in the rive package.

This feature is supported from version 0.14.0-dev.1, and you can read more here:

• Migration Guide
• Rive Native for Flutter
• Rive Flutter Docs

If you're having issues updating to the latest, please open a new issue with reproducible steps.