c0c7fcf974340c6fb9c4cc52e2dae5395e625784
3 Commits
| Author | SHA1 | Message | Date | |
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 karti
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0cc2126e85 |
The capture harness uses the graphics card that was there all along
`launch()` asks for `--use-angle=vulkan` and gets the Radeon RX 6700 XT. On the real film loop at 1440x900 that is 7.56 s a frame to 0.47, and about twelve cores pegged down to less than one. A 180-frame film goes from twenty-two minutes to ninety seconds; the three shipped reels go from over an hour to four minutes. The SwiftShader flag was inherited from the share-card script and its comment said "a box with no display and no GPU". Half of that was never true. The card has been in this machine the whole time, with the amdgpu driver and a working RADV ICD, and Chrome reaches it with **no display server at all** — no DISPLAY, no XDG_RUNTIME_DIR, nothing but read access to /dev/dri/renderD128, which group `render` already grants. So the portability the flag was protecting is intact: this still runs over ssh and under cron. Naming the backend is the whole trick, and most of the plausible spellings are traps. `--use-angle=gl`, `--use-gl=egl`, `--use-gl=desktop`, `--enable-features=Vulkan` and passing no GL flags at all were each measured on this box, and all five land on SwiftShader while reporting success. Only `--use-angle=vulkan` and `--use-angle=gl-egl` reach the card. So `launch()` verifies instead of assuming. `--use-angle=vulkan` is a demand, not a preference: with the driver hidden it yields no WebGL context at all rather than falling back, the boot curtain never lifts, and the caller sits in `waitForFunction` until a three-minute timeout before failing with something that looks nothing like "there is no GPU here". Reading `UNMASKED_RENDERER_WEBGL` once per run costs about half a second and turns that into a printed line and a slow, correct render. Both branches are tested; the sabotaged one was verified with `VK_LOADER_DRIVERS_DISABLE`. The pictures are the same pictures: mean absolute difference of half a level out of 255, confined to MSAA edges and to cloud shadow that already drifts between any two runs of the same renderer. Also corrects every comment across the four scripts that asserted three frames a second or twenty-two minutes a reel. Those were true when written and are not now, and the `reducedMotion` rationale in two of them was resting on the number: the real reason a chapter flight cannot be waited out is that it is ~40 frames however fast they are drawn, which was twenty seconds under software GL and is a shorter race on the GPU — still a race. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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karti
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d71e844703 |
The engine gets photographed, and the camera stops moving while the shutter is open
`shots.mjs` renders the product imagery for lumbridgecorp.com/simulate: seven frames of the running `dist/`, at chapters and times chosen rather than defaulted, written as WebP into the sibling site checkout together with a generated manifest that carries each picture's caption and alt text. The pages there had described a renderer in prose for their whole life without ever showing one, which is a strange way to sell a renderer. The captions live next to the camera poses in this repo, not on the site, so re-aiming a camera cannot leave a caption behind describing the old view. The manifest emits a `ShotId` union, so a page asking for a picture that has been renamed fails the site's typecheck instead of rendering a hole. Along the way: the share cards were never reproducible. `scenekit.ts` eases a chapter change over about two seconds of scene time, `stage.ts` clamps `dt` to 50 ms a frame, and SwiftShader here draws about three frames a second — so the flight takes twenty seconds of wall clock and `capture.mjs` waited four. Every run caught the camera at a different point over the bay, and none of them at the chapter the key press asked for. Both scripts now open the page with reduced motion, which is the app's own answer to "somebody clicked a name in a list": `flyTo` sets the pose outright. `og-tera.png` is regenerated and is Hayes Valley for the first time. The bytes still differ run to run, because aircraft are crossing and cloud shadow is drifting; the framing no longer does. `harness.mjs` is the static server, the SwiftShader flags, the two-hostnames- one-dist trick and the clock shim, extracted because there are two consumers now and two copies would have drifted apart while both claimed to photograph the same app. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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karti
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37d5320664 |
Both doors get a share card, and they are not the same card
A link to tera.lumbridgecorp.com or office.lumbridgecorp.com unfurled as a bare
blue URL. No picture, no sentence, and a title — "Lumbridge Simulate — San
Francisco" — that was wrong at one of the two doors and stale at the other.
There were no `og:` or `twitter:` tags in the document at all. For a project
whose entire pitch is that you should look at it, that is the most expensive
missing markup in the repo.
Both cards are screenshots of the running app, not drawings of it, and that is
the load-bearing decision rather than a shortcut. `scripts/brand-assets/` builds
them in two passes: shoot the city and the office out of `dist/`, then render
`og.html` over those shots at exactly 1200x630. The thing is worth looking at,
and a drawing of it goes stale in silence — which is not hypothetical. The card
currently live on lumbridgecorp.com is a viewport screenshot of a marketing page
that has since been rewritten, so that preview advertises a positioning the site
no longer uses, and it has been doing so for a month with nobody noticing. A
card regenerated from `dist/` by one command is a card that can be kept true by
running the command.
The clock is shifted to midday for the capture, because the sun is real —
`observe()` computes it from `new Date()` — and a card regenerated at two in the
morning is an honest photograph of a black rectangle. Shifted rather than
frozen: everything else runs off `requestAnimationFrame`, and a stopped clock
stalls the frame loop the screenshot is waiting on.
Every string on the cards is the project's own. The headlines are what
`README.md` already says each half is; "Clone it and it works" is CONTRACT.md
§0's acceptance test in the words `main.ts` uses for it; the licence in the
corner is the one in the repo root. A share card is the most-read and least
reviewed sentence a project has, which is exactly why it should not be where new
claims get invented.
The harder half was that the two doors are one bundle. The app sorts out which
door it is by reading its own hostname; a crawler cannot, because it reads the
HTML and nothing else — so one `index.html` means both doors unfurl as the same
place, and being a different place is the office door's whole reason to exist. A
second hand-written shell is what the Caddy config already argues against for the
static root ("sharing the root rather than copying it means a deploy cannot leave
the two doors on different builds"), and two 900-line files each carrying the
inline stylesheet would drift on the first CSS change with nothing to notice.
So the build emits both. Everything outside the `ogc:` markers is copied byte for
byte — verified: `office.html` and `index.html` are identical below `</head>` and
point at the same bundle hash — and only the head block differs. A change to the
interface reaches both doors by construction. It runs in `writeBundle` rather
than `transformIndexHtml` because it needs the finished document, after Vite has
rewritten the asset URLs, and it errors rather than no-oping if the markers go
missing: a card that is quietly the wrong one is the failure the plugin exists to
prevent.
`deploy/Caddyfile.snippet` documents the one line that turns it on — the office
door's `try_files` fallback pointing at `/office.html` off the same shared root.
A deployment that skips it is not broken; the office door keeps working and
unfurls with the city's card, which is what it did before.
Not deployed. The live Caddyfile still falls back to /index.html for the office
host, so this needs that one-line change on cloud-2 before office.
lumbridgecorp.com unfurls as the office.
Both shells boot clean in Chrome with zero console errors, 31 client tests and
the no-binary gate still pass — `public/` is exempt from it, which is where the
two PNGs live.
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