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Greg Pomerantz baff764b0d 120Hz: render-ahead VERIFIED on phone — steady scroll effectively zero-jank 
sltest (minimal 100-row grid), phone, 2x4s drags, 1433 transitions:
- steady 401-frame burst: phase 0.39-1.06ms (spread 0.67, was 1.5),
  1/401 slot jumps, 0 doubles — the held frame presents at render start
  (edge+~1ms), constant phase, 4ms deadline margin
- residual 0.7% drops/doubles concentrated at drag start/stop transitions
- spike classifier (rcpu): all 13 spikes >6ms are CPU-bound (Skia/driver
  CPU, not GPU block) and render-ahead ABSORBS them (13 spikes -> 1
  skipped frame)

Remaining: user finger-perception test (sltest + gallery), then the 1.3%
CPU spikes if anything remains.
2026-10-30 12:39:52 -04:00
docs/BUGS 120Hz: render-ahead VERIFIED on phone — steady scroll effectively zero-jank 2026-10-30 12:39:52 -04:00
scripts Fix 120Hz scroll jank end-to-end: render-ahead present + full-cache eviction off the UI thread 2026-10-30 02:49:23 -04:00
shim Fix 120Hz scroll jank end-to-end: render-ahead present + full-cache eviction off the UI thread 2026-10-30 02:49:23 -04:00
src Fix thumbnail pop-in: hold-queue for paint-cap overflow + append-only scan streaming + window-liveness watchdog 2026-10-30 09:04:01 -04:00
vendor 120Hz: re-enable render-ahead under the corrected timing model 2026-10-30 12:12:44 -04:00
.gitignore Fix 120Hz scroll jank end-to-end: render-ahead present + full-cache eviction off the UI thread 2026-10-30 02:49:23 -04:00
build.rs M0: Slint gallery scaffold + development hand-off 2026-10-27 12:22:59 -04:00
Cargo.lock Fix 120Hz scroll jank end-to-end: render-ahead present + full-cache eviction off the UI thread 2026-10-30 02:49:23 -04:00
Cargo.toml Fix thumbnail pop-in: hold-queue for paint-cap overflow + append-only scan streaming + window-liveness watchdog 2026-10-30 09:04:01 -04:00
HANDOFF.md HANDOFF §8.10: pop-in root causes (paint-cap drop, scan storm, black window) + test hygiene 2026-10-30 09:05:08 -04:00
LICENSE Initial commit 2026-10-27 12:13:22 -04:00
README.md M1: metadata scan + sqlite DB + placeholder list 2026-10-27 13:28:33 -04:00

README.md

gallery

A high-performance image gallery for Android (primary), Linux and macOS — Rust + Slint 1.18.

Status: M1 (metadata scan + DB) done. See HANDOFF.md — the development hand-off with the full plan: architecture, thumbnail pipeline, milestones M1–M7, Slint gotchas, permission flow, and performance targets. Next: M2 (thumbnail engine).

Build

./scripts/build.sh debug     # debug x86_64 APK + install on emulator
./scripts/build.sh           # release x86_64 (emulator)
./scripts/build.sh aarch64   # release aarch64 (device)
cargo run                    # desktop (Linux needs libfontconfig1 + pkg-config)

Requires: Rust (rustup), cargo-apk2, Android SDK + NDK 27 (see HANDOFF.md §3 for exact paths/env).

License

GPL-3.0 (see LICENSE). Built on Slint, used under the Slint royalty-free license for proprietary apps (see HANDOFF.md §10.4).