Implement ClipRSuperellipse on backdrop filter

#177551 propagates all clips to the mutator stack , but the kBackdropClipRse case currently no-ops

The PlatformViewsController should be updated to implement the kBackdropClipRse case

For this snippet:

Widget build(BuildContext context) {
    return ClipRSuperellipse(
      borderRadius: BorderRadius.circular(50),
      child: Container(
        width: 200,
        height: 200,
        decoration: BoxDecoration(
          color: Colors.black.withOpacity(0.2),
          borderRadius: BorderRadius.circular(500),
        ),
        child: BackdropFilter(
          filter: ImageFilter.blur(sigmaX: 10.0, sigmaY: 10.0),
          child: const Center(
            child: Text('Blurred block 1'),
          ),
        ),
      ),
    );
  }

The correct behaviour should clip the blur in the RSE shape but currently it produces, wherein the clip is completely ignored

This is because in the rse case we are simply no-oping. The native code to handle this case needs to be implemented

@Hari-07

From triage: @Hari-07 Can you provide more details and an example so it's easier to understand?

Without additional information, we are unfortunately not sure how to resolve this issue. We are therefore reluctantly going to close this bug for now.
If you find this problem please file a new issue with the same description, what happens, logs and the output of 'flutter doctor -v'. All system setups can be slightly different so it's always better to open new issues and reference the related ones.
Thanks for your contribution.

Have added more details and a reproducible example to the issue description

Implements `ClipRSuperellipse` on backdrop filter on platform view (#…

Implements `ClipRSuperellipse` on backdrop filter on platform view (f…

This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

Implements `ClipRSuperellipse` on backdrop filter on platform view (f…

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Implement `ClipRSuperellipse` on backdrop filter #179125

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Implement ClipRSuperellipse on backdrop filter #179125

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vashworth commented on Dec 4, 2025

github-actions commented on Dec 25, 2025

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Hari-07 commented on Jan 17, 2026

github-actions commented on Mar 23, 2026

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Implement `ClipRSuperellipse` on backdrop filter #179125