Function createPickProvider

Adapts service — already updated against viewport by the caller's frame — into the render-free PickProvider shape a pointer handler consults (§71, §72; RFC 0005).

registerPickingPipeline();
const picking = renderer.createPickingService!();
const provider = createPickProvider(picking, view);
// per frame that wants pixel picking:
picking.update(scene, view);
// in a pointer handler:
const nodeId = await provider.pick(ndcX, ndcY);
Copy

The provider closes over one viewport because the service's id buffer holds exactly one view's pass; an application with several pickable views makes one provider per view. What is deliberately dropped is the PickResult.frame ordinal — the seam's contract is identity only; a caller that needs to reason about staleness holds the service and calls pick on it directly.