WebGPU backend + async as a kernel property (asyncMode, mode 'async') - #856

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feature/webgpu-backend

Commits on Jul 28, 2026

feat: WebGPU backend (mode 'webgpu') — compute shaders, storage buffers, async API

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test: WebGPU suite — 60 async QUnit tests across nine files

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bench: cpu vs webgl2 vs webgpu comparison harness

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Commits on Jul 29, 2026

feat: async is a property a kernel can have, and mode 'async' picks the backend

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test: the async contract, backend by backend

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bench: main-thread availability under readback load

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docs: what 2.20.0 adds, what each backend is worth, and the road to v3

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docs: give webgpu and async their own sections, and the v3 notice its case

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docs: settle the new sections after Dealing With Transpilation

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docs: the v3 notice goes above the fold

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fix(webgpu): four codegen holes the adversarial review confirmed

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fix(webgpu): device limits and device loss stop masquerading as results

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fix: the async contract holds at its seams

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Commits on Jul 30, 2026