perf: capture 1440p frame times; PASS the 60 FPS release check (#16)

Merged PR #16: 1440p perf capture (60 FPS check PASS)

Co-authored-by: Zwitschi <zwitschi82@gmail.com>

Docs/perf/0.1.0-walk-frametimes.csv

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Docs/release-checks.md

@@ -39,7 +39,7 @@ Measured at 1440p on the development workstation: Bazzite, Ryzen 7 7700X, 64 GB
 | `0.1.0` | Traversal, both sides   | —      | —        | —    |
 | `0.1.0` | Placement vs references | PASS (with deliberate simplifications) | Section below, 2026-11-08 | 2026-11-08 |
 | `0.1.0` | Collision and packaging | PASS — no blocking collision, no invisible walls, no seam gaps (see audit note) | `-qaselftest` on the packaged build, 2026-11-08 | 2026-11-08 |
-| `0.1.0` | 60 FPS at 1440p         | —      | —        | —    |
+| `0.1.0` | 60 FPS at 1440p         | PASS — 2.42 ms avg (414 fps), p99 3.01 ms at 2560×1440, TSR on, VSync off, no FG | `-qaselftest` perf capture, `Docs/perf/0.1.0-walk-frametimes.csv` | 2026-11-08 |
 | `0.1.0` | Fresh checkout build    | —      | —        | —    |
 | `0.1.0` | Packaged Linux build    | —      | —        | —    |
 
@@ -106,3 +106,50 @@ Run on the packaged build (`GigLineQA`, Development, Vulkan SM5) with `-qaselfte
 - Caveat recorded: ground Z extremes (−12 m / 3000 cm) are trace-start/terrain-edge
   artifacts of the widened extent, not walkable holes — the walkable corridor is
   continuous (walk + transect both PASS).
+
+## `0.1.0` — 60 FPS at 1440p — record (2026-11-08)
+
+**Build under test:** packaged `GigLineQA` Development, UE **5.8.4**, Vulkan SM5,
+NVIDIA 615.78.08 (RTX 5070 Ti), Bazzite, Ryzen 7 7700X, 64 GB RAM.
+
+**Documented quality preset** (applied via `-ExecCmds`): all scalability groups at
+3 = Epic — `sg.ViewDistanceQuality 3, sg.ShadowQuality 3,
+sg.GlobalIlluminationQuality 3, sg.ReflectionQuality 3, sg.PostProcessQuality 3,
+sg.TextureQuality 3, sg.EffectsQuality 3, sg.FoliageQuality 3, sg.ShadingQuality 3`.
+
+**Upscaling state (recorded from the run):** `r.AntiAliasingMethod=4` → **TSR on**,
+default screen percentage, `r.VSync=0` (**off**), frame generation **off/unavailable**
+(`r.Streamline.FrameGeneration.Mode` absent → -999).
+
+**Route:** the deterministic `-qaselftest` traversal — spawn
+`(-13336,-1150,456)`, walk forward (+Y) into the block for 2 s. Frame times are
+captured every frame over that route (829 frames), not a single sample.
+
+**Result at 2560×1440:**
+
+| Metric | Value |
+| --- | --- |
+| Frames captured | 829 |
+| Average | **2.42 ms → 414 fps** |
+| p50 | 2.38 ms |
+| p95 | 2.71 ms |
+| p99 | 3.01 ms (≈332 fps) |
+| Max | 4.00 ms |
+
+**Verdict: PASS** — worst-case p99 is ~3 ms (≈330 fps), far above the 60 FPS
+target without frame generation.
+
+**Variance note:** two back-to-back runs measured ~9.2 ms (≈108 fps) when another
+game instance / busy compositor overlapped the capture; repeated clean runs
+(windowed and fullscreen, Wayland and X11 drivers, window focused) all measured
+~2.4–2.5 ms. The high outlier is recorded here rather than hidden.
+
+**Reproduce:**
+
+```bash
+# from Game/…/Saved: the run writes Profiling/perf-walk-frametimes.csv
+./GigLine.sh -fullscreen -ResX=2560 -ResY=1440 -nosplash -qaselftest \
+  -ExecCmds="sg.ViewDistanceQuality 3,sg.ShadowQuality 3,sg.GlobalIlluminationQuality 3,sg.ReflectionQuality 3,sg.PostProcessQuality 3,sg.TextureQuality 3,sg.EffectsQuality 3,sg.FoliageQuality 3,sg.ShadingQuality 3"
+```
+
+Committed frame-time series: `Docs/perf/0.1.0-walk-frametimes.csv`.

Game/GigLine/Source/GigLine/GigLineCharacter.cpp

@@ -14,6 +14,9 @@
 #include "Kismet/GameplayStatics.h"
 #include "Misc/CommandLine.h"
 #include "Misc/Parse.h"
+#include "Misc/FileHelper.h"
+#include "Misc/Paths.h"
+#include "HAL/FileManager.h"
 
 // Development-only diagnostics for the walkable demo. These describe the spawn
 // and input setup and are not needed in a shipped build's log spam; disable
@@ -192,6 +195,9 @@ void AGigLineCharacter::StartQASelfTest()
 		bool bResetReturned = false;
 		bool bPausedOn = false;
 		bool bUnpausedBack = false;
+		// Performance capture over the fixed walk route (1.0-3.0 s).
+		TArray<float> FrameMs;
+		bool bPerfLogged = false;
 	};
 
 	TSharedPtr<FQAState> State = MakeShared<FQAState>();
@@ -219,6 +225,8 @@ void AGigLineCharacter::StartQASelfTest()
 			if (bQATestWalking)
 			{
 				AddMovementInput(GetActorForwardVector(), 1.0f);
+				// Frame time for the perf capture (this ticker runs every frame).
+				State->FrameMs.Add(DeltaTime * 1000.0f);
 			}
 
 			// 3.0: stop and measure.
@@ -233,6 +241,57 @@ void AGigLineCharacter::StartQASelfTest()
 					TEXT("GigLine QA: walk moved %.0f cm in 2 s -> %s (Z %.0f -> %.0f)"),
 					Walked, State->bWalkMoved ? TEXT("PASS") : TEXT("FAIL"),
 					State->Start.Z, State->WalkEnd.Z);
+
+				// Perf: report frame-time stats over the fixed walk route.
+				if (!State->bPerfLogged && State->FrameMs.Num() > 10)
+				{
+					State->bPerfLogged = true;
+					TArray<float> Sorted = State->FrameMs;
+					Sorted.Sort();
+					const int32 N = Sorted.Num();
+					double Sum = 0.0;
+					for (float Ms : Sorted) { Sum += Ms; }
+					const float AvgMs = static_cast<float>(Sum / N);
+					const float P50 = Sorted[N / 2];
+					const float P95 = Sorted[FMath::Clamp((int32)(N * 0.95f), 0, N - 1)];
+					const float P99 = Sorted[FMath::Clamp((int32)(N * 0.99f), 0, N - 1)];
+					const float MaxMs = Sorted.Last();
+					FVector2D Res(0.0, 0.0);
+					if (GEngine && GEngine->GameViewport)
+					{
+						GEngine->GameViewport->GetViewportSize(Res);
+					}
+					// Record the upscaling/AA state so the check is reproducible.
+					auto CV = [](const TCHAR* Name)
+					{
+						IConsoleVariable* Var = IConsoleManager::Get().FindConsoleVariable(Name);
+						return Var ? Var->GetInt() : -999;
+					};
+					UE_LOG(LogTemp, Log,
+						TEXT("GigLine PERF: frames=%d avg=%.2fms (%.1f fps) p50=%.2f p95=%.2f p99=%.2f max=%.2f ms at %dx%d"),
+						N, AvgMs, AvgMs > 0.f ? 1000.f / AvgMs : 0.f, P50, P95, P99, MaxMs,
+						(int32)Res.X, (int32)Res.Y);
+					UE_LOG(LogTemp, Log,
+						TEXT("GigLine PERF: AntiAliasingMethod=%d ScreenPercentage=%d TSR=%d FrameGen=%d VSync=%d"),
+						CV(TEXT("r.AntiAliasingMethod")), CV(TEXT("r.ScreenPercentage")),
+						CV(TEXT("r.TSR.History.ScreenPercentage")),
+						CV(TEXT("r.Streamline.FrameGeneration.Mode")),
+						CV(TEXT("r.VSync")));
+
+					// Frame-time series, so the check has a graph source, not one sample.
+					{
+						const FString Dir = FPaths::Combine(FPaths::ProjectSavedDir(), TEXT("Profiling"));
+						IFileManager::Get().MakeDirectory(*Dir, true);
+						const FString Path = FPaths::Combine(Dir, TEXT("perf-walk-frametimes.csv"));
+						FString Csv(TEXT("frame,ms\n"));
+						for (int32 i = 0; i < N; ++i)
+						{
+							Csv += FString::Printf(TEXT("%d,%.3f\n"), i, State->FrameMs[i]);
+						}
+						FFileHelper::SaveStringToFile(Csv, *Path);
+						UE_LOG(LogTemp, Log, TEXT("GigLine PERF: frame times written to %s"), *Path);
+					}
+				}
 			}
 
 			// 3.5: reset should return to the spawn point.

TODO.md

@@ -106,13 +106,13 @@ The MPFB character asset is planned as the NPC template (see `ROADMAP.md`). Keep
 - [x] Commit and review the publication preparation changes before pushing. Initial publication commit: `101db3f`.
 - [x] Review ODbL obligations for each shipped derivative database or produced work before public release. **Done 2026-11-08** — full review recorded in `Docs/odbl-review.md`: the shipped streets/footprints/sidewalks are a Produced Work of the OpenStreetMap database; obligations held are on-screen attribution (`AGigLineHUD`), the ODbL link, and the committed source extract with provenance; share-alike applies to the data layer only (project code/art stay CC0). THIRD_PARTY_NOTICES and `Docs/licensing.md` updated.
 
-### Release checks - active - 01a1b26b-3c94-707f-9665-2f6b4a79b564 (branch `qa-diagnostics-0.1.0`)
+### Release checks
 
 - [x] Player can traverse both sides of the demo without falling through geometry. **Verified 2026-11-08:** Blender pre-check plus an in-engine swept transect (`-qaselftest`) over the north sidewalk, carriageway and south sidewalk from X -14900 to -9420 — 84 samples, 0 holes, ground Z 317..395 (sidewalk 395, road 366, south walk 317). The player spawns at Z 456 and stays there for the whole run (`fall=0`, single Z).
 - [x] Building placement, street scale, and site identity checked against references. **Done 2026-11-08:** rendered current DemoMap content, probed world-space geometry (road 24.3 m vs ref 20.9–25.9 m; sidewalk centreline offsets 12.5/13.2 vs ref 12.6/13.6 m; hero frontage 26.0 m, setback ~13 m vs ref 25.75/14.5 m; frontage + north buildings in verified OSM positions), recorded PASS + deliberate deviations (flat blockout surfaces → `0.1.4`, kerb upstand → `0.1.1`, kerb-flush ramps → `0.1.1`) in `Docs/release-checks.md`, and fixed the mis-aimed north-buildings camera (was 9.5 km west → 85% sky; now frames the buildings). Final human verdict pending on `Screenshots/demo/*`.
 - [x] No blocking collision or packaging defects. **Done 2026-11-08:** extended `-qaselftest` — transect now 1456 samples / 16 rows including the kerb/road/sidewalk seam Ys (0 holes), plus a ground-referenced 30 m wall probe (0/35 blocking hits; no invisible walls). Walk/reset/pause all PASS on the packaged build; `GigLineShotActor` now skips under `-qaselftest`. Evidence in `Docs/release-checks.md` §`0.1.0` audit note.
 - [x] Remove TEMP QA diagnostics (`GigLine SIM` / `GigLine GROUND` log lines and the settle-timer log) from `GigLineCharacter.cpp` before the release tag, or gate them behind a cvar. **Done 2026-11-08:** SIM/GROUND probes were already removed in the input fix (PR #8); the remaining settle-timer + `GigLine IN:` input-setup logs are now gated behind the `gigline.SetupLogs` cvar (default 0 in `DefaultEngine.ini [ConsoleVariables]`, re-enable at runtime). Verified on the packaged build: 0 setup-log lines, `-qaselftest` still all PASS.
-- [ ] 60 FPS at 1440p on the dev workstation (Bazzite, Ryzen 7 7700X, 64 GB RAM, RTX 5070 Ti 16 GB) using a documented quality preset; record upscaling state; report performance without frame generation.
+- [x] 60 FPS at 1440p on the dev workstation (Bazzite, Ryzen 7 7700X, 64 GB RAM, RTX 5070 Ti 16 GB) using a documented quality preset; record upscaling state; report performance without frame generation. **Measured 2026-11-08:** Epic preset, TSR on, VSync off, no frame gen — **2.42 ms avg (414 fps), p99 3.01 ms** at 2560×1440 over the fixed `-qaselftest` walk route; frame-time series in `Docs/perf/0.1.0-walk-frametimes.csv`, record in `Docs/release-checks.md`.
 - [ ] Fresh project checkout builds with the documented external engine installation.
 - [ ] Package Linux build with documented controls.
 - [ ] Tag `v0.1.0` and write `CHANGELOG.md` entry; then remove this section.