You deploy your Flutter 3.x app. It runs at a buttery 120Hz on your Pixel 7 and the iOS simulator. Then the bug reports start flooding in. Users with Samsung Galaxy S21s (Exynos variants) or Redmi Note devices are reporting black screens, flickering geometry, or jagged green artifacts where your smooth gradients should be. The logs aren't helpful. You might see a generic wgpu validation error or a silent failure in the pipeline creation. You are witnessing the fragmentation of Vulkan drivers on Android colliding with Flutter’s new rendering engine, Impeller. While Impeller solves early-onset jank by precompiling shaders, it assumes a level of Vulkan compliance that many Android OEMs—specifically those using older Mali or PowerVR GPUs—have not strictly adhered to. Here is why this happens and how to fix it without rolling back your entire Flutter version. The Root Cause: Descriptor Sets and Driver Compliance To understand the artifacting, you have to look below the Dar...
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