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4grayandClaude Fable 5
10cf157f79
Standalone macOS spike for the frame-copy unification direction from the 2026-07-10 analysis: a helper process renders mpv offscreen into a GL FBO, reads frames back through an async PBO ring, and publishes BGRA frames into a 3-slot POSIX shm seqlock ring; a minimal Electron viewer copies the newest frame via a plain-C N-API addon and uploads it to a WebGL canvas per rAF. First numbers on M1 Pro (see spike README): 4K60 HEVC hwdec sustained at 60 fps end to end, ~1.2 ms shm copy + ~3.5 ms texture upload, ~10 ms produce-to-upload age, zero torn frames. Remaining gates: weak hardware, long-run pacing, HDR, latency flash test. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
31 lines
888 B
JavaScript
31 lines
888 B
JavaScript
/*
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* mpv frame-copy spike — Electron viewer harness.
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*
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* Deliberately minimal: nodeIntegration on, no preload, renderer console is
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* mirrored to stdout so an automated run can scrape the STATS lines.
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*/
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const { app, BrowserWindow } = require('electron');
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const path = require('path');
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const shmName = process.env.SPIKE_SHM || '/mpv-frame-spike';
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app.whenReady().then(() => {
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const win = new BrowserWindow({
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width: 1600,
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height: 980,
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backgroundColor: '#101014',
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webPreferences: {
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nodeIntegration: true,
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contextIsolation: false,
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},
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});
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win.webContents.on('console-message', (_event, _level, message) => {
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console.log(`[viewer] ${message}`);
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});
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win.loadFile(path.join(__dirname, 'index.html'), {
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query: { shm: shmName },
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});
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});
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app.on('window-all-closed', () => app.quit());
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