**Chat log** from Bead: Agentscript Webgpu · [canonical source](https://redfish.acequia.io/guerin/.agents/f4ef67b7-001f-412c-ba90-f93ceba92bda/2026-06-17/chats/2026-06-17-agentscript-webgpu.md) · session 2026-06-17 · discussion: Talk: Agentscript Webgpu *Verbatim chat log: immutable provenance. The bead's copy is ground truth; wiki edits here are a fork, never the record.*
Verbatim user prompts; assistant turns summarized with pointers to durable notes. Ground truth per `beads.md` chat-log discipline.
**User (verbatim, bead-opening prompt):** > agentscript-webgpu > start-bead > goal is to translate agentscript.org cpu-based achitecture to webpu > we will use taos-engine to embed the implementation. *(System context this turn: IDE had `redfish.acequia.io/dev/team/owen-duncan/image-match/campanile-camera-calibration.md` open — noted, not related to this bead.)* **Assistant (summary):** - Read `.ai/START-HERE.md` and the canonical `beads.md` protocol. - Surveyed prior beads (discover-before-acting). Confirmed this is a new thread: `b6fcda63` (ants-in-taos) used the AgentScript *paradigm* hand-written, not the canonical library, and flagged the canonical-lib swap; `c66cbd1d` (taos-engine) is the embedding substrate and already ships a real WebGPU compute layer (`gpu_cull.wgsl`, splat training, voxel mesher, pathtracer). - Found the local `agentscript.org` folder is a DNS-only stub (no source). Canonical source = `github.com/backspaces/agentscript` [VERIFY], not yet cloned. - Generated GUID `f4ef67b7-001f-412c-ba90-f93ceba92bda` and scaffolded the bead: `about.md`, `README.md`, `bead-bind-startup.md`, `agent.json`, `keywords.json`, `names.json`, and `notes/00-agentscript-cpu-to-webgpu.md` (CPU architecture map, CPU→GPU state/kernel split, the hard problems — dynamic population, neighbor queries, on-GPU RNG, read-back, ordering — and the taos-engine embedding plan, plus 5 open questions for Stephen). - Stated next step: clone the AgentScript source and read the real `Model`/`Patches`/`Turtles`/`Links`/ `DataSet` classes before fixing the GPU buffer schema.
**User (verbatim):** "yes, let's start a local .git in the local agentscript.org site and pull from the canonical source" **Assistant (summary):** `git init`'d `sites/agentscript.org`, pulled `github.com/backspaces/agentscript` `master` (HEAD `93d01a3`). Repo had its own `CLAUDE.md`; preserved the ecology hosting note as `CLAUDE.local.md` (git-ignored). Source now local: `src/` classes, `models/`, `examples/`, `docs/`.
**User (verbatim):** "this is very similar to how we are handling taos-engine. bead-mount taos-engine beads that dealt with skills and documentation. we need the same for agentscript" **Assistant (summary):** Mounted the taos-orama (`c66cbd1d`) + bead-orama (`6f5044df`) skills; built the **agentscript-orama** skill (414 files indexed) mirroring taos-orama, reusing the bead-orama core. Synced.
**User (verbatim):** "yes, write the first .mjs / then lets go back to translating agentscript. do we need to build skills and agent for agentscript which could help as we make a translation to agentscript-webgpu" **Assistant (summary):** Wrote `agent.mjs` (the hubler bead's execute-face) — CPU-verified. Then read the real core classes and wrote `notes/01` (CPU API reference + CPU→GPU translation map): `startup/setup/step` are AgentScript-native (`Model.js:119-134`); `ask` snapshot-guards births (`AgentSet.js:263-269`); fixed the SoA schema, the y-flipped patch index, and `diffuse`'s edge-mass rule. Recommended: orama (on-demand) + `notes/01` (load-by-default menu) cover the port; a full agentscript-dev agent face is deferred.
**User (verbatim):** "yes, our first test will be a water droplet model that brings in the terraium DEM. we will want to play with the resolution of the patches. let's make them fill the screen and for now be approx 960x whatever. note we will often have an oblique view with foreground having a high resolution tile vs further in the distance. first give recommendation how to deal with this. For version one, let's just figure out the base resolution based on the centerpoint of the view and whatever raycast to the dem that is. and maybe have a minimum and maximum falloff where it doesn't render if the near pixels are above threshold. maybe we only do it over tiles that are within 1 zoom level. restate this back to me" **User (verbatim, follow-up):** "look at the taos-engine docs and samples. can a turtle get elevation-here cheaply in the webgpu. and then basically apply local sobel kernel for slope and aspect?" **Assistant (summary):** Wrote `notes/02` (water-droplet v1 + patch-resolution PROPOSAL pending confirmation): recommendation = keep the sim grid single-resolution, size it from the view-center raycast, cull by a near/far screen-size band ("focal shell"), source DEM within ±1 zoom; clipmap LOD deferred to v2. Investigated taos-engine: **elevation-here is one texture tap** (`TerrainSystem` heightmap atlas, `setHeightmap`), and **the Sobel is already baked** — the atlas packs the normal (`.g/.b` = nx/nz, `terrain.wgsl:115-125`), so slope+aspect come free from the same fetch; run our own 4-tap Sobel only on a live-modified height field. Restated the v1 plan back to Stephen; flagged the near-side cull ambiguity (Q8).