Greg Pomerantz
d5bbb41bbd
Residual scroll jank at 120 Hz (suspected Slint event-loop bug) needs per-frame + per-stage timing the logcat ring buffer can't hold. New cargo feature `perf` (default OFF — all sites are cfg-gated, zero overhead when off): - FR: per-frame app-side render cost + frame gap, from the rendering notifier (BeforeRendering/AfterRendering). - STG: event-loop stage costs (wake/timers/events/poll/lastrender) from timestamps instrumented into the pinned vendor copy of i-slint-backend-android-activity (stg.rs; Cargo.toml now depends on it directly + optional under `perf`). - DECODE: per-thumbnail-job cost on the workers. - All lines mirrored to /sdcard/Download/.gallery_perf.log (logcat rotates too fast at ~120 lines/s). Format + reading guide: docs/BUGS/scroll-jank-120hz.md.
94 lines
3.5 KiB
TOML
94 lines
3.5 KiB
TOML
[package]
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name = "gallery"
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version = "0.1.0"
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edition = "2021"
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[lib]
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crate-type = ["cdylib", "lib"]
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[dependencies]
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libc = "0.2"
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slint = { version = "1.18.1", features = [
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"backend-android-activity-06",
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# Exposes `slint::wgpu_30` + `Image: TryFrom<wgpu::Texture>` +
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# GraphicsAPI::WGPU30 — used by gputex to upload thumbnail textures
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# off the UI thread (auto-enabled on Android already; explicit for
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# host builds).
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"unstable-wgpu-30",
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] }
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log = "0.4"
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rusqlite = { version = "0.41.0", features = ["bundled"] }
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sha1 = "0.11.0"
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turbojpeg = { version = "1.5.1", features = ["cmake"] }
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image = { version = "0.25.10", default-features = false, features = ["png"] }
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kamadak-exif = "0.6.1"
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# STG event-loop stage timestamps, read by the jank-hunt `perf` feature
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# (docs/BUGS/scroll-jank-120hz.md). Already in the graph transitively via
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# slint; direct + optional so `perf` can read its `stg` module.
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i-slint-backend-android-activity = { version = "1.18.1", optional = true }
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[features]
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# Jank-hunt instrumentation: per-frame frame-gap + render cost (FR),
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# event-loop stage costs (STG), and per-job decode cost (DECODE), mirrored
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# to a file on Android. OFF by default — dead-code-eliminated, zero runtime
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# overhead. To capture, build with `--features perf` (format + analysis:
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# docs/BUGS/scroll-jank-120hz.md).
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perf = ["dep:i-slint-backend-android-activity"]
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[build-dependencies]
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slint-build = "1.18.1"
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[dev-dependencies]
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tempfile = "3.27.0"
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# --- Android packaging (cargo-apk2 1.5) ---
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# NOTE: uses_permission is a TOP-LEVEL android key (ndk-build2 manifest layer),
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# not under [package.metadata.android.application]. max_sdk_version supported.
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[package.metadata.android]
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package = "wow.gmp.gallery"
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build_targets = ["x86_64-linux-android", "aarch64-linux-android"]
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[package.metadata.android.sdk]
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min_sdk_version = 26
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target_sdk_version = 35
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[package.metadata.android.application]
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label = "Gallery"
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[[package.metadata.android.application.activity]]
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name = "android.app.NativeActivity"
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[[package.metadata.android.application.activity.meta_data]]
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name = "android.app.lib_name"
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value = "gallery"
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[[package.metadata.android.application.activity.intent_filter]]
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actions = ["android.intent.action.MAIN"]
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categories = ["android.intent.category.LAUNCHER"]
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# --- Permissions (runtime flow: HANDOFF.md §7) ---
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# NOTE: the Permission schema supports only `name` + `max_sdk_version`.
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# READ_MEDIA_IMAGES is a no-op on API < 33 (unknown perms are ignored).
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[[package.metadata.android.uses_permission]]
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name = "android.permission.READ_MEDIA_IMAGES"
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# API <= 32: legacy external storage read.
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[[package.metadata.android.uses_permission]]
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name = "android.permission.READ_EXTERNAL_STORAGE"
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max_sdk_version = 32
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# "All files access" — same special-access pattern as passgo; needed to browse
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# arbitrary directories outside the media collection.
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[[package.metadata.android.uses_permission]]
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name = "android.permission.MANAGE_EXTERNAL_STORAGE"
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[patch.crates-io]
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# Vendored Slint Skia renderer: removes a redundant per-frame synchronous
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# flush that caused 19-24 ms scroll stalls on Mali (see
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# docs/BUGS/slint-skia-final-flush-jank.md). Pinned to the 1.18.1 source;
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# re-apply the one hunk when bumping Slint.
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i-slint-renderer-skia = { path = "vendor/i-slint-renderer-skia" }
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# STG (jank-hunt): event-loop stage timestamps, read by the `perf` feature
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# (docs/BUGS/scroll-jank-120hz.md). Pinned to the 1.18.1 source.
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i-slint-backend-android-activity = { path = "vendor/i-slint-backend-android-activity-1.18.1" }
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