Implementing Particle Snap Effect in Flutter Using Shaders and OverlayPortal

The article shows how to create a Thanos‑style particle snap animation in Flutter by capturing a widget screenshot, inserting an OverlayPortal layer, and applying a custom fragment shader that treats each pixel as a moving, fading particle, with detailed GLSL code and shader loading steps.

FlutterMobileDevelopmentOverlayPortal

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Implementing Particle Snap Effect in Flutter Using Shaders and OverlayPortal