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acdream/tests/AcDream.App.Tests/Rendering
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Erik 1d73ce524c test(app): measure the warmed path, not the path being warmed (#250) 
The zero-allocation family failed about one full-suite run in three, on
unchanged trees, and had been dismissed as inherent noise in
`GC.GetAllocatedBytesForCurrentThread` three separate times. It is not noise.
Reading the four members side by side, they share one root: **the measured
window was never the warmed path.**

  UiDatFontTests            1 warm call, then a 10,000-iteration loop inline
  RenderFrameProductTests   8 warm calls, then a 1,000-iteration loop inline
  OracleTests               1 warm call, 1 measured call
  ArchRenderSceneTests      warms Apply(registrations), measures Apply(updates)

Two mechanisms come out of that table. A test method is JIT-compiled at tier 0
like anything else, and a long-running loop in tier-0 code gets replaced
mid-flight by on-stack replacement — which compiles on the thread running the
loop, so its bookkeeping is charged to the window being measured. That is the
first two. And `ArchRenderSceneTests` warmed one arm of a switch and measured
the other, so the measured call was the first ever into `ApplyUpdate` and paid
that arm's JIT, type loads and static initialisation inside the window;
`RenderFrameProductTests` warmed 8 times, below the tier-0 call-counting
threshold of 30, so promotion was still pending when measurement began.

That also explains the signature nobody could account for. Alone, the process is
quiet and the runtime has finished before the assertion arrives. Alongside eight
other test assemblies, tier-0 compilation never stops, the call-counting delay is
re-armed continually, and the work slides into the window. Clean in isolation,
failing under load, on a tree that changed nothing.

`ZeroAllocationProbe` invokes the step many times before measuring anything, then
measures windows that run the same already-warmed loop over the same
already-taken path. Each window is a batch of 32 invocations and it reports the
minimum across 4 of them. Both halves are load-bearing: the minimum is what
excludes a one-time cost, and the batch is what keeps the assertion as strong as
the loops it replaces — minimising over *single* invocations would report zero
for a path that allocates every tenth call, which is a real regression made
invisible. I had written it that way first and the apparatus test caught it.

**The bound is untouched: exactly zero, no tolerance, no retry, no assertion
relaxed.** `ZeroAllocationProbeTests` proves the apparatus can still fail — a
step allocating every call reads above zero and does throw, a first-invocation
cost reads as zero, a cost every tenth call is caught, and the one stated limit
(the batch must cover the period) is pinned as a test rather than left as prose.
Without those, a later edit could quietly make the whole family unfailable.

Twelve further sites in this assembly still use the hand-rolled shape. None has
been observed failing, and each needs its own repeatability analysis — several
mutate state or consume monotonic sequences — so they are listed in the issue
for adoption when next touched rather than converted blind at scale.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-29 03:42:08 +02:00
..
Gpu feat(render): Vulkan campaign V11 step 3 — drop the GL packages and shaders 2026-07-29 02:58:15 +02:00
Residency feat(diagnostics): complete residency pressure ledger 2026-07-24 16:40:17 +02:00
Vfx refactor(runtime): own canonical entity and object lifetime 2026-07-26 05:54:46 +02:00
Wb feat(render): Vulkan campaign V11 step 3 — drop the GL packages and shaders 2026-07-29 02:58:15 +02:00
ArchRenderSceneTests.cs test(app): measure the warmed path, not the path being warmed (#250) 2026-07-29 03:42:08 +02:00
AttachmentUpdateOrderTests.cs refactor(app): key live projections by runtime identity 2026-07-25 21:50:58 +02:00
BoundedUnownedResourceCacheTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
BuildingGroupScratchTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
CameraCollisionIndoorTests.cs T6 (BR-7) C3: per-cell shadow architecture - flood registration, building channel, per-cell query; b3ce505 stopgap DELETED (closes #99) 2026-06-11 14:37:50 +02:00
CameraCollisionUpdateViewerTests.cs feat(A): wire SweepEye to the verbatim update_viewer (start-cell + fallbacks) 2026-06-05 11:10:32 +02:00
CameraControllerTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
CameraDiagnosticsCollection.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
CameraFrameControllerTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
CellViewDedupTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
CellVisibilityCommitTests.cs fix(streaming): commit EnvCell landblocks atomically (#214) 2026-07-13 18:45:24 +02:00
CellVisibilityFromRootTests.cs refactor(render): Stage 3 T3.1 — delete FindCameraCell AABB grace-frame fallback 2026-06-02 15:36:47 +02:00
CellVisibilityPortalPolygonsTests.cs fix(streaming): commit EnvCell landblocks atomically (#214) 2026-07-13 18:45:24 +02:00
ClipFrameAssemblerTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
ClipFrameLayoutTests.cs feat(render): Vulkan campaign V11 step 2 — delete the OpenGL backend 2026-07-29 02:19:53 +02:00
ClipPlaneSetTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
CompositeTextureArrayCachePolicyTests.cs feat(render): Campaign V slice V4t-2 — the world texture stack crosses to GpuTextureSlot 2026-07-28 12:43:50 +02:00
CornerFloodReplayTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
CreatureAppraisalPresentationTests.cs feat(ui): port retail creature appraisal presentation 2026-07-23 12:55:24 +02:00
CurrentRenderSceneOracleTests.cs test(app): measure the warmed path, not the path being warmed (#250) 2026-07-29 03:42:08 +02:00
DebugVmRenderFactsPublisherTests.cs refactor(render): extract frame presentation diagnostics 2026-07-22 05:02:31 +02:00
DevToolsRuntimeSourcesTests.cs refactor(app): compose session and player startup 2026-07-22 18:28:32 +02:00
DisplayFramePacingControllerTests.cs fix(rendering): survive display topology handoff 2026-07-25 13:15:24 +02:00
DollCameraTests.cs fix(D.2b): Slice 2 — retail-exact doll pose, camera + heading (visual gate) 2026-06-25 13:16:27 +02:00
DollEntityBuilderTests.cs feat(D.2b): Slice 2 — DollEntityBuilder (player Setup+ObjDesc -> doll WorldEntity) 2026-06-23 09:07:02 +02:00
DynamicBufferCapacityTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
EntityClipTests.cs fix(render): R1 — repurpose the ParentCellId==null cell-gate bypass (#78) 2026-06-02 20:10:26 +02:00
EntityPhysicsHostTests.cs refactor(world): canonicalize live physics host ownership 2026-07-21 14:05:34 +02:00
EquippedChildProjectionWithdrawalTests.cs fix(interaction): restore retail loot placement and world-drop projection 2026-07-27 00:03:15 +02:00
FixedEntityTextureOwnerLeaseTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
FramebufferResizeControllerTests.cs refactor(app): compose settings and developer tools 2026-07-22 16:11:34 +02:00
FramePacingControllerTests.cs fix #225: stabilize render pacing and frame CPU 2026-07-19 06:29:30 +02:00
FramePacingPolicyTests.cs fix #225: stabilize render pacing and frame CPU 2026-07-19 06:29:30 +02:00
GameWindowLifetimeTests.cs refactor(app): extract focused window lifetime 2026-07-22 19:43:52 +02:00
GameWindowRenderLeafCompositionTests.cs feat(render): Vulkan campaign V11 step 2 — delete the OpenGL backend 2026-07-29 02:19:53 +02:00
GameWindowSlice8BoundaryTests.cs feat(render): Vulkan campaign V11 step 2 — delete the OpenGL backend 2026-07-29 02:19:53 +02:00
GpuFrameFlightControllerTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
GpuResourceRetirementTransactionTests.cs feat(render): Vulkan campaign V11 step 2 — delete the OpenGL backend 2026-07-29 02:19:53 +02:00
GpuRetiredTerrainSlotAllocatorTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
HostQuiescenceGateTests.cs refactor(app): own native window callback lifetime 2026-07-22 09:59:10 +02:00
HouseExitWalkReplayTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
IndoorDrawPlanTests.cs feat(render): IndoorDrawPlan.ShellPass — every visible cell, no drawable filter (R1) 2026-06-06 21:59:26 +02:00
InteriorEntityPartitionTests.cs T1 (fused BR-2/3): retail frame order - dynamics last, punch+seal, shell chop deleted 2026-06-11 11:16:27 +02:00
Issue95DungeonFloodDiagnosticTests.cs test(#95): headless dungeon-flood diagnostic — measure visible-cell count on 0x0007 2026-06-13 18:52:00 +02:00
Issue113DrawingBspFilterTests.cs fix(render): #113 root cause #2 - GfxObj meshes draw only DrawingBSP-referenced polys (the REAL phantom staircase) 2026-06-10 20:52:52 +02:00
Issue113MeetingHallFloodTests.cs fix(streaming): commit EnvCell landblocks atomically (#214) 2026-07-13 18:45:24 +02:00
Issue120ReciprocalPingPongTests.cs #119-residual: tower-ascent harness pins the roof-lip flood gap; barrel claim RETRACTED (user axiom: not in retail) 2026-06-11 18:34:45 +02:00
Issue124LookInSeedRegionTests.cs fix #124: interior-root building look-ins as a landscape-stage sub-pass 2026-06-12 15:59:29 +02:00
Issue127FloodFlipReplayTests.cs close #127 (user-gated + desk pin): distant-building flood flap died with the W=0 clip port 2026-06-13 10:03:33 +02:00
Issue129PunchBiasTests.cs fix #129: cap the punch mark bias's eye-space reach (was unbounded at distance) 2026-06-12 13:38:59 +02:00
Issue130DoorwayStripTests.cs fix #130 (the real strip): drawn-shell lift vs draw-space portal consumers 2026-06-12 14:28:16 +02:00
Issue131SetupProbeTests.cs fix #131 (root cause 4, structurally forced): look-in cells draw their DYNAMICS - the town portal is a server object in the hall's porch cell 2026-06-12 20:52:34 +02:00
Issue177StairDescentCameraFloodTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
Issue181CameraParkStabilityTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
Issue181VisFlapReplayTests.cs diag #181 (refined): 0x0181's region is a zero-area sliver; the amplifier is per-drawn-cell state shifting with the cell list, not light-pool scoping 2026-07-06 21:46:49 +02:00
Issue181WallPressEquilibriumTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
Issue176177FacilityHubFloodReplayTests.cs docs+test #176/#177: 12 mechanisms refuted, apparatus shipped, probe protocol staged 2026-07-05 21:20:03 +02:00
LinuxMonotonicFramePacingWaiterTests.cs feat(linux): add graphical platform services 2026-07-27 11:54:59 +02:00
LinuxPlatformBoundaryTests.cs feat(linux): add graphical platform services 2026-07-27 11:54:59 +02:00
LiveAppearanceAnimationTests.cs refactor(runtime): own canonical entity and object lifetime 2026-07-26 05:54:46 +02:00
LiveEntityAnimationPresenterTests.cs refactor(runtime): own canonical entity and object lifetime 2026-07-26 05:54:46 +02:00
LiveEntityAnimationSchedulerTests.cs refactor(runtime): own projectile simulation 2026-07-26 14:17:42 +02:00
LiveEntityCreateSupersessionRecoveryTests.cs refactor(runtime): own canonical entity and object lifetime 2026-07-26 05:54:46 +02:00
LiveRenderProjectionJournalTests.cs refactor(runtime): own canonical entity and object lifetime 2026-07-26 05:54:46 +02:00
NdcScissorRectTests.cs fix #130: doorway-slice scissor cut the aperture's top/right pixel row 2026-06-12 13:31:43 +02:00
OrderedResourceTeardownTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
OutdoorCellNodeTests.cs feat(render): R-A2 — per-building floods (the flap fix) 2026-06-08 18:44:43 +02:00
OwnerScopedResourceRegistryTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
PaperdollFramePresenterTests.cs fix(streaming): preserve portal destination ownership 2026-07-25 08:35:12 +02:00
ParticleBindlessInstanceTests.cs feat(render): Vulkan campaign V11 step 3 — drop the GL packages and shaders 2026-07-29 02:58:15 +02:00
ParticleEmitterRetirementTrackerTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
PhysicsCameraCollisionProbeTests.cs feat(A): wire SweepEye to the verbatim update_viewer (start-cell + fallbacks) 2026-06-05 11:10:32 +02:00
PortalProjectionTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
PortalTunnelAssetTests.cs feat(render): Vulkan campaign V11 step 2 — delete the OpenGL backend 2026-07-29 02:19:53 +02:00
PortalViewTests.cs feat(render): Phase A8.F — ViewPolygon + CellView clip-region data model 2026-05-29 11:30:28 +02:00
PortalVisibilityBuilderTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
PortalVisibilityRobustnessTests.cs feat(render): R-A2 — per-building floods (the flap fix) 2026-06-08 18:44:43 +02:00
PrivatePresentationRendererTests.cs feat(render): Campaign V slice V11 commit 1 - delete ImGui, Studio, and the DevTools frontend 2026-07-28 23:56:04 +02:00
RendererResourceDisposalLedgerTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
RenderFrameDiagnosticsControllerTests.cs perf(diagnostics): expose prepared asset source counters 2026-07-24 15:16:32 +02:00
RenderFrameOrchestratorTests.cs perf(diag): complete trustworthy Slice A capture tooling 2026-07-24 12:46:51 +02:00
RenderFramePreparationControllerTests.cs refactor(render): compose render frame orchestrator 2026-07-22 08:03:49 +02:00
RenderFrameProductTests.cs test(app): measure the warmed path, not the path being warmed (#250) 2026-07-29 03:42:08 +02:00
RenderFrameRecoveryIntegrationTests.cs perf(diag): complete trustworthy Slice A capture tooling 2026-07-24 12:46:51 +02:00
RenderFrameResourceControllerTests.cs feat(render): Vulkan campaign V11 step 3 — drop the GL packages and shaders 2026-07-29 02:58:15 +02:00
RenderFrameRouteOwnerSelectorTests.cs refactor(rendering): prepare retained particle routing 2026-07-25 08:45:18 +02:00
RenderInstanceCandidateTests.cs refactor(rendering): isolate dispatcher candidate values 2026-07-25 01:06:57 +02:00
RenderSceneArchitectureTests.cs feat(rendering): contain incremental render scene 2026-07-24 21:42:42 +02:00
RenderScenePViewFrameProductTests.cs Reapply "perf(rendering): draw retained frame product" 2026-07-25 08:36:11 +02:00
RenderSceneShadowRuntimeTests.cs perf(rendering): retain packed classification 2026-07-25 02:46:40 +02:00
ResourceCleanupGroupTests.cs feat(render): Vulkan campaign V11 step 2 — delete the OpenGL backend 2026-07-29 02:19:53 +02:00
ResourceShutdownTransactionTests.cs refactor(app): extract focused window lifetime 2026-07-22 19:43:52 +02:00
RetailAlphaQueueTests.cs perf(render): bound animation and alpha scratch residency 2026-07-24 16:34:28 +02:00
RetailChaseCameraTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
RetailParticleGeometryClassifierTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
RetailPViewPassExecutorTests.cs perf(rendering): retire production entity partition 2026-07-25 10:50:57 +02:00
RetailSelectionAssetTests.cs feat(headless): share immutable gameplay content 2026-07-27 09:00:48 +02:00
RetailSelectionLightingPulseTests.cs fix(interaction): bind selection to live incarnations 2026-07-21 07:07:58 +02:00
RetailSelectionSceneTests.cs fix(rendering): isolate world selection transactions 2026-07-24 22:31:15 +02:00
RetailStaticAnimatingObjectSchedulerTests.cs refactor(app): key live projections by runtime identity 2026-07-25 21:50:58 +02:00
RhiCompositeTextureArrayBackendTests.cs feat(render): Campaign V slice V6i-2 commit 2 — world texture creation crosses to IGpuTexture 2026-07-28 13:57:43 +02:00
RhiVertexLayoutStrideTests.cs feat(render): Campaign V slice V6l commit 1 - particles draw on Vulkan 2026-07-28 17:20:59 +02:00
RollingTimingSampleWindowTests.cs refactor(render): extract frame presentation diagnostics 2026-07-22 05:02:31 +02:00
RuntimeResourceSlotTests.cs refactor(app): compose atomic frame roots 2026-07-22 19:02:08 +02:00
ScreenPolygonClipTests.cs feat(render): Phase A8.F — ScreenPolygonClip 2D convex-polygon intersection 2026-05-29 11:37:30 +02:00
SilkWindowCallbackBindingTests.cs fix(rendering): survive display topology handoff 2026-07-25 13:15:24 +02:00
SkyParamsLayoutTests.cs feat(render): V6e — the sky's uniforms become a buffer and its texture a table slot 2026-07-28 09:54:13 +02:00
SkyProjectionTests.cs fix(runtime): align portal and movement presentation 2026-07-17 08:48:27 +02:00
SkyVertexLayoutTests.cs feat(render): Campaign V slice V6k commit 1 - the sky draws on Vulkan 2026-07-28 16:31:37 +02:00
SpawnMotionInitializerTests.cs fix(animation): preserve wire motion on every spawn path 2026-07-12 14:27:44 +02:00
StandaloneBindlessTextureCacheTests.cs feat(render): Campaign V slice V4t-2 — the world texture stack crosses to GpuTextureSlot 2026-07-28 12:43:50 +02:00
StaticRenderProjectionJournalTests.cs fix(rendering): preserve exact scene traversal order 2026-07-25 02:03:58 +02:00
SyntheticEntityMeshReferenceOwnerTests.cs fix(streaming): preserve portal destination ownership 2026-07-25 08:35:12 +02:00
TerrainCullOrientationTests.cs fix #108-residual (root cause): terrain drew DOUBLE-SIDED - port retail landPolysDraw eye-side gate as terrain backface cull 2026-06-12 22:05:31 +02:00
TerrainDrawDiagnosticsControllerTests.cs refactor(render): extract typed retail pview passes 2026-07-22 06:40:09 +02:00
TerrainParticleCellVisibilityTests.cs perf(vfx): port retail particle visibility degradation 2026-07-17 15:27:36 +02:00
TerrainTextureTilingTableTests.cs feat(render): Campaign V slice V6f-2 - terrain's tiling table becomes a buffer 2026-07-28 10:11:00 +02:00
TowerAscentReplayTests.cs #119-residual ROOT CAUSE: the +0.02 m render lift leaked into the portal-visibility graph - horizontal portals side-culled anyone standing on them 2026-06-11 19:26:06 +02:00
ViewconeCullerReuseTests.cs fix(rendering): bound portal resource lifetime 2026-07-18 21:35:16 +02:00
WorldRenderDiagnosticsTests.cs feat(render): Vulkan campaign V11 step 3 — drop the GL packages and shaders 2026-07-29 02:58:15 +02:00
WorldRenderFrameBuilderTests.cs test(app): serialize the classes sharing camera/render process globals (#252) 2026-07-28 18:46:43 +02:00
WorldRevealRenderResourceSchedulerTests.cs fix(streaming): preserve portal destination ownership 2026-07-25 08:35:12 +02:00
WorldSceneRendererTests.cs refactor(runtime): own teleport destination correlation 2026-07-26 17:52:34 +02:00