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0e3360e4a0
Profiling (Pixel 7 + SM-T819) showed the chart CPU-bound in Skia analytic-AA path fill plus a full-buffer copy on every frame. - LineSignalRenderer: draw the signal polyline with anti-aliasing off, via a cached common Paint + drawIntoCanvas (KMP-safe, no nativeCanvas). Flips Skia from CPU coverage-mask raster to GPU tessellation; configured strokeWidth still honored. Removes the old Stroke cache. - TieredBuffer/CircularBuffer: replace the full ~60k-sample copy+scan in the draw hot path with an O(log n) bisect window read (copyWindow). Output byte-identical (equivalence tests incl. ring-wrap + edges). - RealtimeChart: split the single Canvas into a cold layer (Y-axis line, grid, labels) and a hot layer (signal, X-axis, crosshair) so per-frame TextMeasurer layout stops running every frame. Y range stabilized to the tick grid and shared by both layers (signal never clips). - minSdk 26 -> 24. Renderer unit test moved commonTest -> iosTest (Compose Paint delegates to a non-mockable android.graphics.Paint stub on the JVM host; Skiko backs it for real). Verified on SM-T819 (release): frame time 150ms -> 48ms, ~10 -> ~31 fps at full 8x200 Hz load. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> |
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| .github | ||
| .paul | ||
| app | ||
| chart-realtime | ||
| docs | ||
| gradle | ||
| samples/ios/ChartRealtimeDemo | ||
| .gitignore | ||
| build.gradle.kts | ||
| CHANGELOG.md | ||
| CONTRIBUTING.md | ||
| gradle.properties | ||
| gradlew | ||
| LICENSE | ||
| settings.gradle.kts | ||