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Add exact Dawn Vulkan device query - #648
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This was referenced Sep 19, 2026
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Closes #646. Creates SceneTech/AppScene#260 for the concrete exact-device external-memory allocator and hardware qualification.
Add a versioned WebScene-owned C query compiled into the pinned Linux Dawn monolith. A live-device registry hooks Dawn instance add/remove, rejects foreign or stale
WGPUDevicetokens before dereference, and returns the exact Vulkan physical device, device, queue, family and UUID identities only for a live Vulkan device. The provider binds that result into the merged exact-device factory while retaining the publicwgpu::Deviceand shared device-loss state. AppScene includes no Dawn private headers.The transient pinned-source patch is restored before SDK sealing; export policy, SDK staging/hashes, cache identity and source contracts include the hook.
Base:
0d3d2eb55d36302aa4c9c822cba58a721e16e9ddImplementation:
ea1ed367c4ffaf11670a1bb8333425104fb9ca49Validation under the current throughput policy:
git diff --cached --check.