 gramps
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432adfdaef
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perf(render): take-4 slice 2 — IsOpaque memcpy, integer bilinear, pump scratch pool
Take 4: pacing held (sync perfect) but avg render stayed 58.9ms — 2M
managed row-walk iterations + a fresh 8.3MB buffer every tick (LOH churn
into GC stalls inside the render measurement).
- VideoFrame.IsOpaque: producer-contract flag (screen capture + webcam —
DWM/MF fill alpha 255; media/chat/web/static NOT flagged). Full-cover
aligned opaque backdrop = ONE Buffer.BlockCopy; black pre-fill skipped
when it covers.
- General BlitContent: integer 8.8 fixed-point bilinear + blend, row
invariants hoisted, no per-pixel division/Math.Round. Within ±1 of the
float reference (pixel tests allow ±2). Research per derivative-work
rule: libyuv row/scale kernels (chromium.googlesource.com/libyuv/libyuv).
- FramePump scratch pool (max 4, length-keyed, owned-by-reference):
release strictly AFTER SubmitFrameAsync returns (stdin write copies);
Contains-guard makes the transition Cut alias safe.
- Removed the dead per-tick fromScene render + fromSceneProvider seam —
BlendFrame consumes TransitionService.FromFrame captured at Start; the
pump's render fed nothing. MainViewModel call site updated (signature).
Bugs caught by the pixel probes pre-ship (recorded MyMistakes): first
Bilinear double-shifted both stages (solid-255 sampled to ~1 -> general
path drew nothing); sentinel 0xAB collided with an x+y pixel. FakeEncoder
snapshots submitted frames (mirrors real copy semantics under recycling).
ONE integration test: Pump_Pools_ScratchBuffers_Across_Frames_Without_
Stale_Pixels (alternating backdrops + repeated backing identity). Direct
pin: Composite_OpaqueFullCover_Backdrop_CopiesEveryPixel_Into_Scratch.
Clean build 0 warnings; 59/59 per-class + RealApp boot-smoke. take 5
verdict: expect avg render <= ~10ms, ~300/300 frames. Docs same commit:
ai.md pipeline section, TASKS.md TASK 18, HANDOFF rewritten (Unit B spec
+ settled decisions queued).
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2026-09-04 09:35:59 -07:00 |
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gramps
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4b9a8e515f
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Control Surface UX: pill toggle, background rename, per-scene properties
- Sliding pill toggle (green ON / red OFF) replaces checkbox
- Geometry mismatch error for custom backgrounds
- Backdrop -> Background: C# rename, SQL column rename with migration
- Source.IsBackground: new -> override (fixes WPF binding)
- Legacy 'Backdrop' display name migrated to 'Background'
- Per-scene UseDefaultBackground + CustomBackgroundPath
- Asset files renamed backdrop -> background
- StagedScene/LiveScene split, thumbnail strip, edit gating
- TransitionService (Cut/Fade/Move)
- Context menu: Capture Desktop, Refresh Desktop
- Resolution badge removed, ON-AIR status light added
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2026-08-22 18:10:59 -07:00 |
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