Native WebGPU validation harness

Interactive Three.js WebGPU/TSL demo for Native WebGPU validation harness, with 8 scenarios, 6 mechanisms, and 5 quality tiers and evidence-gated validation.

Evidence status: Accepted runtime evidence is available for the published contract represented by this demo.

Readiness & remaining fixes 1

Declared evidence work remains. Overall implementation status does not establish individual runtime or performance claims.

P0Define and measure the target performance contract

The schema-fixture, webgpu-correctness, release tiers have no accepted frame target. Record named device/browser/GPU, viewport, DPR, sustained CPU/GPU/presentation p50 and p95, deadline misses, memory, and settled quality. Submission time is not GPU timing.
tiers[].frameTargetMs

Use the linked skill and source to inspect route ownership and evidence classification before treating this presentation as an accepted implementation.

Owning skill: Visual Validation
Published routes: 8 scenarios · 6 mechanisms · 5 quality tiers

Supported mechanisms

aligned-readback — Aligned Readback
claim-verdicts — Claim Verdicts
gpu-timestamps — GPU Timestamps
resource-inventory — Resource Inventory
visual-errors — Visual Errors
lifecycle-trend — Lifecycle Trend