wip(L6, side branch): screen-space far gate; no-op cutoff removed; cost within noise vs L4

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ED33VnqepD4YY6gDAAA832

ARCHITECTURE.md

@@ -648,6 +648,7 @@ driven by `EditorBrush*` props.
   two global settings through `FVoxelOpContext` once per chunk, while `ClassifyBox`/`ClassifyTile`
   share the radial proof. This adds no cache, state, RNG, or clipmap stream, and does not touch the
   density grid's two-pass MC loop or any existing `thread_local` cache.
+- **Large `thread_local` caches are lazy** (`VoxelForgeCoreThreadLocal::FLazy<T>`, `Standalone/Core/include/VoxelForgeCore/ThreadLocalStorage.h`, round Linux4): the per-thread handle is a pointer; the table is heap-allocated on that thread's first use and freed at thread exit. Still worker-private and lock-free. It keeps the static TLS block at ~43 KiB instead of 17.3 MiB (glibc carves static TLS out of each thread's stack, and a Linux server pays it on every thread). New cache tables over a few KiB go through `FLazy`, never a bare `thread_local` array.
 - **Biome cache** (`ResolveBiomeSampleAt`/`FChunkBiomeCache`, §8.14): validity is a world-XY BOX +
   ChunkZ + Seed, NOT a chunk key — same reason as the SDF cache. The cell classification is
   noise-heavy; a chunk-key would thrash it on gradient-normal / +X/+Y boundary samples. Keep

CODEMAP.md

@@ -158,6 +158,8 @@ remains `0`, and lateral regions remain gated off.
 | `VoxelForge.Build.cs` | Deps: Core, CoreUObject, Engine, **GameplayTags**, **RealtimeMeshComponent**, `VoxelForgeCore`. `AVoxelWorld::bUseVoxelForgeCore` opts into the Core runtime route; it defaults off. |
 | `../../VoxelForgeCore/VoxelForgeCore.Build.cs` | C++20 runtime module. Reads `Standalone/Core/core_sources.txt`, validates one include shim per canonical source, and fails UBT on missing, extra, or mismatched shims. No unity/PCH; private copied implementation stays under `vfcore::detail`. |
 | `../../VoxelForgeCore/Private/Manifest/VFCore_*.cpp` | Eighteen one-source UBT shims that include canonical files under `Standalone/`; they do not copy Core implementation. The API-boundary row includes `Core/src/VoxelForgeCore.cpp` directly. |
+| `../../Standalone/Core/include/VoxelForgeCore/ThreadLocalStorage.h` | `VoxelForgeCoreThreadLocal::FLazy<T>`: thread-local handle that heap-allocates a worker-private cache on first use. All large Core and legacy caches use it (HeightfieldColumnCache, IslandColumnCache, GFloorReliefCache, GRoomGraphCache, GSurfColCache, tunnel/diff caches). See ARCHITECTURE §8.10. |
+| `../../Standalone/Core/src/CoreNamespacePreamble.h` | First include of every Core TU. Forces FP contraction off per compiler (Clang/MSVC/GCC pragmas; unknown compiler = `#error`) and defines `vfcore::fp_contract::selfTest`, which `World::compile` runs before building: a fused multiply-add (e.g. Clang `-ffp-contract=fast`) refuses world generation. The world depends on contraction (Linux2/Linux3 reports), so never remove either. |
 | `../../VoxelForgeCore/Private/ModuleEntry/` | Unreal module entry and an isolated `CoreMinimal.h` shim for the actual engine header. |
 | `../../Standalone/Core/include/VoxelForgeCore/VoxelForgeCore.h` | Standard-library-only public Core API. `VOXELFORGECORE_API` exports the API from the Unreal module and is empty for standalone builds. |
 | `../../Standalone/Core/src/FloatingIslandsInternal.h` | Canonical standalone/Core floating-island planner, geometry-versioned field, manifest serializer, influence bounds, capsule-route checks, and thickness audit. |

Standalone/BuildLinux.sh

@@ -33,6 +33,8 @@ if [[ "$FP_CONTRACT" != "default" && "$FP_CONTRACT" != "off" && "$FP_CONTRACT" !
 fi
 command -v "$COMPILER" >/dev/null || { printf 'Compiler not found: %s\n' "$COMPILER" >&2; exit 2; }
 command -v ar >/dev/null || { printf 'ar not found\n' >&2; exit 2; }
+command -v pkg-config >/dev/null || { printf 'pkg-config not found\n' >&2; exit 2; }
+pkg-config --exists egl glesv2 libpng || { printf 'EGL, GLESv2, and libpng development files are required\n' >&2; exit 2; }
 
 BUILD_DIR="$ROOT/Build/linux-$VARIANT"
 BIN_DIR="$ROOT/bin/linux"
@@ -117,5 +119,10 @@ CORE_LIBRARY="$BUILD_DIR/libVoxelForgeCore.a"
 "$(command -v ar)" rcs "$CORE_LIBRARY" "${CORE_OBJECTS[@]}"
 OUTPUT="$BIN_DIR/VoxelForgeCoreHeadless-$VARIANT"
 "$COMPILER" -pthread "${LEGACY_OBJECTS[@]}" "$CORE_LIBRARY" -o "$OUTPUT"
+CAPTURE_OUTPUT="$BIN_DIR/VoxelForgeOffscreenCapture-$VARIANT"
+"$COMPILER" -std=c++20 -O2 -fno-fast-math -pthread \
+    "$ROOT/Source/LinuxOffscreenCapture.cpp" -o "$CAPTURE_OUTPUT" \
+    $(pkg-config --cflags --libs egl glesv2 libpng)
 printf 'Built Core library: %s\nBuilt headless benchmark: %s\n' "$CORE_LIBRARY" "$OUTPUT"
+printf 'Built EGL offscreen capture: %s\n' "$CAPTURE_OUTPUT"
 printf 'Compiler: %s | variant: %s | fp-contract: %s | jobs: %s\n' "$COMPILER" "$VARIANT" "$FP_CONTRACT" "$JOBS"

Standalone/Core/include/VoxelForgeCore/ThreadLocalStorage.h

@@ -0,0 +1,33 @@
+#pragma once
+
+// Keep large worker caches out of each thread's eager ELF TLS image. Each handle is itself
+// thread-local; its payload is allocated on the first use by that thread and released when the
+// thread exits. The payload is never shared and this type has no synchronization.
+namespace VoxelForgeCoreThreadLocal
+{
+    template <typename T>
+    class FLazy
+    {
+    public:
+        FLazy() noexcept = default;
+        FLazy(const FLazy&) = delete;
+        FLazy& operator=(const FLazy&) = delete;
+
+        ~FLazy()
+        {
+            delete Value;
+        }
+
+        T& Get()
+        {
+            if (Value == nullptr)
+            {
+                Value = new T{};
+            }
+            return *Value;
+        }
+
+    private:
+        T* Value = nullptr;
+    };
+}

Standalone/Core/include/VoxelForgeCore/VoxelForgeCore.h

@@ -137,6 +137,7 @@ namespace VoxelForgeCore
         double marchingCubesGradientNormalsMilliseconds = 0.0;
         double marchingCubesEdgeInterpolationMilliseconds = 0.0;
         double marchingCubesVertexDedupStreamMilliseconds = 0.0;
+        double marchingCubesSkirtMilliseconds = 0.0;
         double marchingCubesOtherMilliseconds = 0.0;
         std::uint64_t marchingCubesGradientFallbackDensityCalls = 0;
         std::uint64_t marchingCubesEdgeMidpointDensityCalls = 0;
@@ -704,6 +705,10 @@ namespace VoxelForgeCore
             std::int64_t maximumZSubvoxels, std::int32_t stepVoxels) const noexcept;
         static void resetThreadColumnCacheStats(bool captureCoordinates = false,
             bool clearCache = false, std::uint32_t octaveDrop = 0) noexcept;
+        static void setThreadColumnOctaveDrop(std::uint32_t octaveDrop) noexcept;
+        static std::uint32_t threadColumnOctaveDrop() noexcept;
+        static void setThreadColumnInterpolationStrideSubvoxels(std::int64_t stride) noexcept;
+        static std::int64_t threadColumnInterpolationStrideSubvoxels() noexcept;
         static void setThreadColumnCacheLegacyDirectMapped(bool enabled) noexcept;
         static const HeightfieldColumnCacheStats& threadColumnCacheStats() noexcept;
         FieldInterval interval(std::int64_t minimumXSubvoxels,
@@ -1050,6 +1055,10 @@ namespace VoxelForgeCore
         // Incremente quand le plafond lointain change. Les hashes LOD4-8 incluent cette version;
         // densite et hashes LOD0-3 restent inchanges.
         std::uint32_t farHorizonVersion = 3;
+        // Linux research controls for reproducing L5 negative controls. Defaults preserve output.
+        std::uint32_t diagnosticGlobalOctaveDrop = 0;
+        std::uint32_t diagnosticCellStride = 1;
+        std::uint32_t diagnosticColumnInterpolationStride = 1;
     };
 
     class VFCORE_API World

Standalone/Core/src/CoreNamespacePreamble.h

@@ -54,3 +54,41 @@
 // value tree shared lets the viewer resolve its reference world and Core snapshot from one parse.
 #include "Json.h"
 #include "VoxelForgeCore/VoxelForgeCore.h"
+#include "VoxelForgeCore/ThreadLocalStorage.h"
+
+// Keep Core's expression-level FMA behavior fixed regardless of the toolchain setting.
+// Clang's "fast" mode ignores the pragma, so Core's runtime self-test rejects that build.
+#if defined(__clang__)
+    #pragma clang fp contract(off)
+#elif defined(_MSC_VER)
+    #pragma fp_contract(off)
+#elif defined(__GNUC__)
+    #pragma GCC optimize ("fp-contract=off")
+#else
+    #error "VoxelForge Core requires a compiler-specific FP contraction control"
+#endif
+
+namespace vfcore::fp_contract
+{
+#if defined(_MSC_VER)
+    #define VFCORE_FP_PROBE_NOINLINE __declspec(noinline)
+#else
+    #define VFCORE_FP_PROBE_NOINLINE __attribute__((noinline))
+#endif
+
+    [[maybe_unused]] static VFCORE_FP_PROBE_NOINLINE double multiplyAddProbe(
+        double a, double b, double c) noexcept
+    {
+        return a * b + c;
+    }
+
+    [[maybe_unused]] static bool selfTest() noexcept
+    {
+        volatile double a = 1.0 + 0x1p-27;
+        volatile double b = 1.0 - 0x1p-27;
+        volatile double c = -1.0;
+        return multiplyAddProbe(a, b, c) == 0.0;
+    }
+
+    #undef VFCORE_FP_PROBE_NOINLINE
+}

Standalone/Core/src/FloatingIslandsInternal.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "VoxelForgeCore/ThreadLocalStorage.h"
 #include "Json.h"
 #include "VoxelForgeCore/VoxelForgeCore.h"
 
@@ -441,7 +442,9 @@ namespace floating_island_detail
         constexpr std::size_t Ways=4;
         constexpr std::size_t SetCount=2048;
         static_assert((SetCount&(SetCount-1))==0);
-        static thread_local std::array<FIslandColumnCacheEntry,SetCount*Ways> Cache{};
+        static thread_local VoxelForgeCoreThreadLocal::FLazy<
+            std::array<FIslandColumnCacheEntry,SetCount*Ways>> Cache;
+        auto& cache=Cache.Get();
         const std::int64_t SampleX=static_cast<std::int64_t>(x);
         const std::int64_t SampleY=static_cast<std::int64_t>(y);
         std::uint64_t IndexKey=island.stableId
@@ -452,10 +455,10 @@ namespace floating_island_detail
         IndexKey*=0xff51afd7ed558ccdull;
         IndexKey^=IndexKey>>33;
         const std::size_t Base=static_cast<std::size_t>(IndexKey&(SetCount-1))*Ways;
-        FIslandColumnCacheEntry* Replacement=&Cache[Base+((IndexKey>>11)&(Ways-1))];
+        FIslandColumnCacheEntry* Replacement=&cache[Base+((IndexKey>>11)&(Ways-1))];
         for(std::size_t Way=0;Way<Ways;++Way)
         {
-            FIslandColumnCacheEntry& Entry=Cache[Base+Way];
+            FIslandColumnCacheEntry& Entry=cache[Base+Way];
             const bool bKeyMatches=Entry.bValid&&Entry.Seed==recipe.seed
                 &&Entry.StableId==island.stableId
                 &&Entry.SampleX==SampleX&&Entry.SampleY==SampleY
@@ -559,11 +562,13 @@ namespace floating_island_detail
         // Mettre en cache les constantes par worker; la cle complete evite tout partage d'etat.
         constexpr std::size_t CacheSize=1024;
         static_assert((CacheSize&(CacheSize-1))==0);
-        static thread_local std::array<FRootLobeCacheEntry,CacheSize> Cache{};
+        static thread_local VoxelForgeCoreThreadLocal::FLazy<
+            std::array<FRootLobeCacheEntry,CacheSize>> Cache;
+        auto& cache=Cache.Get();
         const std::uint64_t IndexKey=island.stableId^(island.stableId>>33)
             ^(static_cast<std::uint64_t>(recipe.seed)<<17)
             ^(static_cast<std::uint64_t>(static_cast<std::uint32_t>(rootIndex))*0x9e3779b97f4a7c15ull);
-        FRootLobeCacheEntry& Entry=Cache[static_cast<std::size_t>(IndexKey)&(CacheSize-1)];
+        FRootLobeCacheEntry& Entry=cache[static_cast<std::size_t>(IndexKey)&(CacheSize-1)];
         const bool bKeyMatches=Entry.bValid&&Entry.Seed==recipe.seed
             &&Entry.StableId==island.stableId&&Entry.RootIndex==rootIndex
             &&Entry.GeometryVersion==recipe.geometryVersion

Standalone/Core/src/VoxelForgeCore.cpp

@@ -969,6 +969,11 @@ namespace VoxelForgeCore
     bool World::compile(const ShapeBuildRequest& request,const JobScheduler& scheduler,std::string& error)
     {
         if(!impl_->owner){error="resolved world snapshot is empty";return false;}
+        if(!::vfcore::fp_contract::selfTest())
+        {
+            error="Core startup refused: floating-point contraction self-test detected a fused multiply-add; this compiler/flag combination is unsupported for world generation";
+            return false;
+        }
         auto shape=std::make_unique<FStandaloneShapeWorld>();
         const bool ok=shape->Build(*impl_->owner,ToNative(request.minVoxel),ToNative(request.maxVoxel),
             ToNative(request.clipMinVoxel),ToNative(request.clipMaxVoxel),
@@ -1441,6 +1446,14 @@ namespace VoxelForgeCore
                 }
             }
         }
+        int32 MeshCells=cells,MeshStep=step;
+        if(options.diagnosticCellStride>1&&level>=3)
+        {
+            const int32 Stride=static_cast<int32>(std::min<std::uint32_t>(
+                options.diagnosticCellStride,static_cast<std::uint32_t>(std::max(1,cells))));
+            MeshCells=FMath::Max(1,cells/Stride);
+            MeshStep=FMath::Max(1,extent/MeshCells);
+        }
         int64 sampleCount=0;std::vector<float> densityValues;
         FVoxelMarchingCubesStageTimings McStageTimings;
         TileMesh out;out.key=key;
@@ -1673,13 +1686,32 @@ namespace VoxelForgeCore
         out.diagnostics.featureListMilliseconds=std::chrono::duration<double,std::milli>(
             std::chrono::steady_clock::now()-FeatureListStart).count();
         const ScopedWorldAssemblyFeatureQueriesV1 featureScope(featureQueries);
+        const bool bDiagnosticColumnSampling=options.diagnosticGlobalOctaveDrop!=0
+            ||options.diagnosticColumnInterpolationStride>1;
+        const std::uint32_t PreviousOctaveDrop=bDiagnosticColumnSampling
+            ?Heightfield2D::threadColumnOctaveDrop():0;
+        const std::int64_t PreviousInterpolationStride=bDiagnosticColumnSampling
+            ?Heightfield2D::threadColumnInterpolationStrideSubvoxels():0;
+        if(bDiagnosticColumnSampling)
+        {
+            Heightfield2D::setThreadColumnOctaveDrop(options.diagnosticGlobalOctaveDrop);
+            Heightfield2D::setThreadColumnInterpolationStrideSubvoxels(
+                options.diagnosticColumnInterpolationStride>1&&level>=3
+                ?static_cast<std::int64_t>(MeshStep)*WorldAssemblySubvoxelsPerVoxel
+                    *options.diagnosticColumnInterpolationStride:0);
+        }
         const double ColumnMillisecondsBeforeMeshing=
             VoxelForgeCore::Heightfield2D::threadColumnCacheStats().columnComputeMilliseconds;
         const auto MarchingCubesStart=std::chrono::steady_clock::now();
-        FVoxelMeshData mesh=mesher.GenerateMesh(origin,step,cells,nullptr,
+        FVoxelMeshData mesh=mesher.GenerateMesh(origin,MeshStep,MeshCells,nullptr,
             MeshBandMinZVoxel,MeshBandMaxZVoxel,&sampleCount,nullptr,nullptr,
             (options.hashDensity||options.captureDensitySamples)?&densityValues:nullptr,
             options.profileMesherStages?&McStageTimings:nullptr);
+        if(bDiagnosticColumnSampling)
+        {
+            Heightfield2D::setThreadColumnOctaveDrop(PreviousOctaveDrop);
+            Heightfield2D::setThreadColumnInterpolationStrideSubvoxels(PreviousInterpolationStride);
+        }
         const double MarchingCubesWallMilliseconds=std::chrono::duration<double,std::milli>(
             std::chrono::steady_clock::now()-MarchingCubesStart).count();
         const double ColumnMillisecondsAfterMeshing=
@@ -1690,6 +1722,10 @@ namespace VoxelForgeCore
             ColumnMillisecondsAfterMeshing-ColumnMillisecondsBeforeMeshing);
         if(options.profileMesherStages)
         {
+            out.diagnostics.marchingCubesSkirtMilliseconds=McStageTimings.SkirtMilliseconds;
+            out.diagnostics.marchingCubesExclusiveMilliseconds=std::max(0.0,
+                out.diagnostics.marchingCubesExclusiveMilliseconds
+                    -out.diagnostics.marchingCubesSkirtMilliseconds);
             out.diagnostics.marchingCubesDensityGridMilliseconds=McStageTimings.DensityGridMilliseconds;
             out.diagnostics.marchingCubesCellClassificationMilliseconds=
                 McStageTimings.CellClassificationMilliseconds;

Standalone/Core/src/WorldAssemblerInternal.h

@@ -1,5 +1,6 @@
 #pragma once
 
+#include "VoxelForgeCore/ThreadLocalStorage.h"
 #include "Json.h"
 #include "VoxelForgeCore/VoxelForgeCore.h"
 
@@ -1030,6 +1031,7 @@ namespace world_assembly_detail
     // Audit-only override; normal tile generation resets this to zero before evaluating a recipe.
     // Surcharge reservee aux mesures; la generation remet zero avant d'evaluer une recette.
     inline thread_local std::uint32_t HeightfieldColumnOctaveDrop = 0;
+    inline thread_local std::int64_t HeightfieldColumnInterpolationStrideSubvoxels = 0;
 
     inline std::int32_t FractalNoiseQ16(std::int64_t xQ16, std::int64_t yQ16,
         std::int64_t zQ16, std::uint32_t octaves, bool ridged = false)
@@ -1367,9 +1369,10 @@ namespace world_assembly_detail
     // qui partagent les bits faibles du hash.
     constexpr std::size_t HeightfieldColumnCacheWays=4;
     constexpr std::size_t HeightfieldColumnCacheSetCount=65536/HeightfieldColumnCacheWays;
-    inline thread_local std::array<HeightfieldColumnCacheEntry, 65536> HeightfieldColumnCache{};
+    inline thread_local VoxelForgeCoreThreadLocal::FLazy<
-    inline thread_local std::array<std::uint8_t, HeightfieldColumnCacheSetCount>
+        std::array<HeightfieldColumnCacheEntry, 65536>> HeightfieldColumnCache;
-        HeightfieldColumnCacheNextWay{};
+    inline thread_local VoxelForgeCoreThreadLocal::FLazy<
+        std::array<std::uint8_t, HeightfieldColumnCacheSetCount>> HeightfieldColumnCacheNextWay;
     inline thread_local HeightfieldColumnCacheStats HeightfieldColumnStats{};
     inline thread_local bool HeightfieldColumnCacheLegacyDirectMapped=false;
 
@@ -1504,6 +1507,45 @@ namespace world_assembly_detail
     inline HeightfieldPointSample CachedColumn(const WorldAssemblyRecipeV1& recipe,
         const WorldAssemblyStratumPlanV1& plan,std::int64_t x,std::int64_t y)
     {
+        const std::int64_t InterpolationStride=HeightfieldColumnInterpolationStrideSubvoxels;
+        if(InterpolationStride>0)
+        {
+            const std::int64_t X0=FloorDiv(x,InterpolationStride)*InterpolationStride;
+            const std::int64_t Y0=FloorDiv(y,InterpolationStride)*InterpolationStride;
+            const std::int64_t X1=X0+InterpolationStride,Y1=Y0+InterpolationStride;
+            const std::int64_t Fx=x-X0,Fy=y-Y0;
+            struct FScopedInterpolationSampling
+            {
+                std::int64_t Previous=HeightfieldColumnInterpolationStrideSubvoxels;
+                ~FScopedInterpolationSampling()
+                {HeightfieldColumnInterpolationStrideSubvoxels=Previous;}
+            } SamplingScope;
+            HeightfieldColumnInterpolationStrideSubvoxels=0;
+            const HeightfieldPointSample C00=CachedColumn(recipe,plan,X0,Y0);
+            const HeightfieldPointSample C10=CachedColumn(recipe,plan,X1,Y0);
+            const HeightfieldPointSample C01=CachedColumn(recipe,plan,X0,Y1);
+            const HeightfieldPointSample C11=CachedColumn(recipe,plan,X1,Y1);
+            const auto Lerp=[&](std::int64_t A,std::int64_t B,std::int64_t T)
+            {return A+((B-A)*T)/InterpolationStride;};
+            const auto Bilinear=[&](std::int64_t A,std::int64_t B,
+                std::int64_t C,std::int64_t D)
+            {
+                const std::int64_t Top=Lerp(A,B,Fx),Bottom=Lerp(C,D,Fx);
+                return Lerp(Top,Bottom,Fy);
+            };
+            HeightfieldPointSample Out=C00;
+            Out.groundHeightSubvoxels=Bilinear(C00.groundHeightSubvoxels,
+                C10.groundHeightSubvoxels,C01.groundHeightSubvoxels,
+                C11.groundHeightSubvoxels);
+            Out.capHeightSubvoxels=Bilinear(C00.capHeightSubvoxels,
+                C10.capHeightSubvoxels,C01.capHeightSubvoxels,
+                C11.capHeightSubvoxels);
+            return Out;
+        }
+        if(HeightfieldColumnOctaveDrop!=0)
+            return EvaluateColumn(recipe,plan,x,y);
+        auto& cache=HeightfieldColumnCache.Get();
+        auto& nextWay=HeightfieldColumnCacheNextWay.Get();
         HeightfieldColumnCacheEntry* replacement=nullptr;
         if(HeightfieldColumnCacheLegacyDirectMapped)
         {
@@ -1513,8 +1555,7 @@ namespace world_assembly_detail
                 ^std::rotl(static_cast<std::uint64_t>(y)*0xC2B2AE3D27D4EB4Full,23)
                 ^static_cast<std::uint64_t>(reinterpret_cast<std::uintptr_t>(&recipe))
                 ^std::rotl(static_cast<std::uint64_t>(reinterpret_cast<std::uintptr_t>(&plan)),41);
-            replacement=&HeightfieldColumnCache[static_cast<std::size_t>(mixed)
+            replacement=&cache[static_cast<std::size_t>(mixed)&(cache.size()-1)];
-                &(HeightfieldColumnCache.size()-1)];
             if(replacement->recipe==&recipe&&replacement->plan==&plan
                 &&replacement->recipeHash==recipe.contentHash
                 &&replacement->planHash==plan.contentHash&&replacement->x==x&&replacement->y==y)
@@ -1528,7 +1569,7 @@ namespace world_assembly_detail
             std::size_t replacementWay=HeightfieldColumnCacheWays;
             for(std::size_t way=0;way<HeightfieldColumnCacheWays;++way)
             {
-                auto& candidate=HeightfieldColumnCache[first+way];
+                auto& candidate=cache[first+way];
                 if(candidate.recipe==&recipe&&candidate.plan==&plan
                     &&candidate.recipeHash==recipe.contentHash&&candidate.planHash==plan.contentHash
                     &&candidate.x==x&&candidate.y==y)
@@ -1539,11 +1580,11 @@ namespace world_assembly_detail
             if(replacementWay==HeightfieldColumnCacheWays)
             {
                 ++HeightfieldColumnStats.columnConflictMisses;
-                replacementWay=HeightfieldColumnCacheNextWay[set];
+                replacementWay=nextWay[set];
             }
-            HeightfieldColumnCacheNextWay[set]=static_cast<std::uint8_t>(
+            nextWay[set]=static_cast<std::uint8_t>(
                 (replacementWay+1)%HeightfieldColumnCacheWays);
-            replacement=&HeightfieldColumnCache[first+replacementWay];
+            replacement=&cache[first+replacementWay];
         }
         auto& entry=*replacement;
         const auto start=std::chrono::steady_clock::now();
@@ -2036,9 +2077,9 @@ void Heightfield2D::resetThreadColumnCacheStats(bool captureCoordinates, bool cl
     // Les sondes de mesure peuvent vider les entrees d'une tuile avant de comparer deux grilles.
     if(clearCache)
     {
-        world_assembly_detail::HeightfieldColumnCache.fill(
+        world_assembly_detail::HeightfieldColumnCache.Get().fill(
             world_assembly_detail::HeightfieldColumnCacheEntry{});
-        world_assembly_detail::HeightfieldColumnCacheNextWay.fill(0);
+        world_assembly_detail::HeightfieldColumnCacheNextWay.Get().fill(0);
     }
     auto& Stats=world_assembly_detail::HeightfieldColumnStats;
     world_assembly_detail::HeightfieldColumnOctaveDrop=octaveDrop;
@@ -2055,6 +2096,19 @@ void Heightfield2D::resetThreadColumnCacheStats(bool captureCoordinates, bool cl
 void Heightfield2D::setThreadColumnCacheLegacyDirectMapped(bool enabled) noexcept
 { world_assembly_detail::HeightfieldColumnCacheLegacyDirectMapped=enabled; }
 
+void Heightfield2D::setThreadColumnOctaveDrop(std::uint32_t octaveDrop) noexcept
+{ world_assembly_detail::HeightfieldColumnOctaveDrop=octaveDrop; }
+
+std::uint32_t Heightfield2D::threadColumnOctaveDrop() noexcept
+{ return world_assembly_detail::HeightfieldColumnOctaveDrop; }
+
+void Heightfield2D::setThreadColumnInterpolationStrideSubvoxels(std::int64_t stride) noexcept
+{ world_assembly_detail::HeightfieldColumnInterpolationStrideSubvoxels=std::max<std::int64_t>(0,stride); }
+
+std::int64_t Heightfield2D::threadColumnInterpolationStrideSubvoxels() noexcept
+{ return world_assembly_detail::HeightfieldColumnInterpolationStrideSubvoxels; }
+
+
 const HeightfieldColumnCacheStats& Heightfield2D::threadColumnCacheStats() noexcept
 { return world_assembly_detail::HeightfieldColumnStats; }
 

Standalone/Research/WorldAssemblerM3/Linux3/REPORT.md

@@ -0,0 +1,93 @@
+# WorldAssemblerM3 Linux3 — FP contraction
+
+## Unreal flags: documented and inferred
+
+UE 5.7's Target Reference documents `FPSemantics`; Epic's Module Properties page documents the matching module-level property and says it overrides FP semantics. Epic Support says module and target overrides have existed since UE 5.4. This repo's `VoxelForgeCore.Build.cs` already sets `FPSemantics = FPSemanticsMode.Precise` and `PCHUsage = PCHUsageMode.NoPCHs` (existing lines 44–45). [UE 5.7 Target Reference](https://dev.epicgames.com/documentation/en-us/unreal-engine/unreal-engine-build-tool-target-reference?application_version=5.7), [Module Properties](https://dev.epicgames.com/documentation/unreal-engine/module-properties-in-unreal-engine), [Epic Support answer](https://forums.unrealengine.com/t/debug-game-development/2668723)
+
+Public UBT documentation does **not** publish one exact compiler argv for every plugin, platform, and configuration. Epic Support reports Windows DebugGame uses `/fp:precise` and Development uses `/fp:fast` by default. MSVC 2022 17+ defaults `/fp:precise` to contraction off; explicit `/fp:contract` can enable it under `/fp:precise`, and `/fp:fast` permits it by default. Earlier MSVC versions defaulted precise contraction on. Explicit `#pragma fp_contract(off)` overrides `/fp:fast`. Clang's `precise` model allows same-expression `-ffp-contract=on`; `-ffp-contract=fast` can fuse across statements and ignores `#pragma clang fp contract(off)`. GCC defaults to `-ffp-contract=fast`; its standard `FP_CONTRACT` pragma is not implemented, so this patch uses GCC's function-option pragma instead. [MSVC `/fp`](https://learn.microsoft.com/en-us/cpp/build/reference/fp-specify-floating-point-behavior?view=msvc-170), [MSVC pragma](https://learn.microsoft.com/en-us/cpp/preprocessor/fp-contract?view=msvc-170), [Clang FP pragmas and model](https://clang.llvm.org/docs/LanguageExtensions.html#extensions-to-specify-floating-point-flags), [GCC FP options](https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html), [GCC function-specific pragmas](https://gcc.gnu.org/onlinedocs/gcc/Function-Specific-Option-Pragmas.html), [GCC FP implementation](https://gcc.gnu.org/onlinedocs/gcc/Floating-point-implementation.html)
+
+**Inference for this repo:** The standalone BuildHost is safe-by-configuration on current VS 2022: `Build.ps1` explicitly uses `/fp:precise`, whose 17.0+ default is contraction off. The owner's UBT Windows build is likely safe for the same reason because the module sets `Precise`, but it was not captured here; an older MSVC or an explicit `/fp:contract` could put it at risk. On Linux, `Precise` alone does not mean contraction off for Clang, so the UBT build was at risk before this change. UE 5.7's supported Linux compiler is Clang 20.1.8; this host tested Clang 19.1.7. Epic's UE 5.7 PS5 notes also show Clang flags vary by platform: PS5 removed `-ffp-contract=off` because its `-ffast-math` setting conflicted with it. This does not establish that Linux UBT passes `-ffast-math`; capture that module's actual command line on the owner PC. [UE Linux requirements](https://dev.epicgames.com/documentation/unreal-engine/linux-development-requirements-for-unreal-engine?lang=en-US), [UE 5.7 PS5 notes](https://dev.epicgames.com/documentation/en-us/unreal-engine/playstation-5-release-notes-for-unreal-engine-5-7)
+
+## Mechanism and Core lines touched
+
+Each Core translation unit loads `CoreNamespacePreamble.h` before its implementation. The preamble applies Clang `contract(off)`, MSVC `fp_contract(off)`, or GCC `optimize("fp-contract=off")`; unknown compilers fail at compile time. Its noinline probe evaluates `(1 + 2^-27) * (1 - 2^-27) - 1` using volatile inputs. Separate multiply/add rounds to `0`; a fused operation returns `-2^-54`.
+
+`World::compile` runs that probe before building the shape and returns an error before density generation if it fuses. The check and density implementation receive the same preamble/FP pragma in Core. Clang `fast` is deliberately refused because Clang documents that mode as ignoring the source pragma. GCC's default and the explicit Clang `on` mode are instead compiled with the source-level off control.
+
+Only these Core lines changed:
+
+- `Standalone/Core/src/CoreNamespacePreamble.h:58–93` — per-compiler pragma and shared self-test.
+- `Standalone/Core/src/VoxelForgeCore.cpp:972–976` — refusal before shape build.
+
+For this sweep, the standalone headless runner also gained `--auto-surface-camera` and `--mesh-coverage` in `Standalone/Source/StreamBenchmarkHeadless.cpp` and `Standalone/Source/StreamBenchmarkPipeline.h`.
+
+The probe guards FP contraction. It does not establish immunity to unrelated `-ffast-math` transformations such as reassociation; those flags must be captured and handled separately if present.
+
+## Hash immunity
+
+All successful rows cover the L1 whole view (2,553 tiles); each cell below lists density / mesh / payload / topology hashes. Runs used `Standalone/data/owner_world.json` and `--world-assembler-prototype --stream-benchmark --stream-pipeline --stream-hash --force-generate --clip-radius=3 --max-clip-level=8 --camera=0,-35,-487.94,0,-22 --far-horizon-lod8-step=0`. `Clang fast` was built with `-ffp-contract=fast` and `-fno-fast-math`.
+
+| Compiler and setting | W1 | W12 |
+|---|---|---|
+| Clang 19 `-ffp-contract=off` | `c10697a8f48380c7 / e75c9119a1498cd5 / 49a9a8d1835a6c8c / edcb23288b5e8724` | same |
+| Clang 19 `-ffp-contract=on` | same | same |
+| Clang 19 `-ffp-contract=fast` | refused before generation | refused before generation |
+| GCC 14 default (effective contract=fast) | `c10697a8f48380c7 / e75c9119a1498cd5 / 49a9a8d1835a6c8c / edcb23288b5e8724` | same |
+
+All three supported configurations (Clang off/on, GCC default) match the L1 reference. Both Clang `fast` runs returned exit code 2 in about 0.066 s with the explicit diagnostic, before generating a density hash. Logs: [W1 refusal](../../../../Saved/Linux/linux3-final-hash-clang-fast-w1.log), [W12 refusal](../../../../Saved/Linux/linux3-final-hash-clang-fast-w12.log); successful per-run logs are `linux3-final-hash-*.log` under `Saved/Linux`.
+
+## Self-test negative control
+
+The test is in the shared Core preamble, not a separate differently compiled test file. In the deliberate Clang `fast` build it detected the fused result and the Core API rejected world generation at W1 and W12. A compiler-only probe also returned `0` for Clang off/on and GCC with its off pragma, and `-0x1p-54` for Clang fast ([probe log](../../../../Saved/Linux/linux3-pragma-probe.log)). The production-build refusal is the negative control.
+
+## Corrected seed sweep
+
+The sweep used 48 unique seeds, both recipes, Clang off/on and GCC default, and W1/W12: 576 runs in 432.977 s. Each SurfaceWorld 96³-voxel cube was centered at the original XY and moved to that seed's nearest heightfield surface; each FloatingIslands cube was centered on that seed's largest planned island. Every run covered 27 LOD0 tiles and contained triangles.
+
+| Recipe | Per-seed coverage across the sweep |
+|---|---|
+| SurfaceWorld | 9–18 nonempty mesh tiles; 26,182–52,468 indexed triangles |
+| FloatingIslands | 7–15 nonempty mesh tiles; 15,728–46,224 indexed triangles |
+
+All seeds had distinct density hashes within each recipe. Cross-build comparisons: 192, mismatches 0. W1/W12 comparisons: 288, mismatches 0. Empty-mesh rows: 0. Peak run RSS: 306,580 KiB. The full compiler/worker results are in [seed_mesh_coverage.csv](seed_mesh_coverage.csv); one row per seed and recipe, including the nonempty tile and triangle counts and placed camera, is in [seed_mesh_coverage_per_seed.csv](seed_mesh_coverage_per_seed.csv). Summary: [seed_mesh_coverage_summary.txt](seed_mesh_coverage_summary.txt).
+
+## Cost
+
+Three interleaved W12 runs per binary used the same 2,553-tile view, without mesh-coverage counting. “Before” is the S14 executable; “after” is the Clang-off L3 executable.
+
+| Build | Whole-view ready times (s) | Median |
+|---|---|---:|
+| S14 before | 2.260, 2.326, 2.339 | 2.326 s |
+| L3 after | 2.329, 2.384, 2.337 | 2.337 s |
+
+The interleaved median change is +0.011 s (+0.5%). The agreed owner-provided before baseline was 2.42 s; L3's 2.337 s median is 0.083 s below it. All six runs retained the L1 hashes. Maximum run RSS was about 550 MiB. Governor remained `powersave`; EPP remained `balance_performance`.
+
+## Windows work still needed
+
+MSVC was not available here. On the Windows BuildHost:
+
+1. Build the standalone Core and viewer from the updated tree: `powershell -ExecutionPolicy Bypass -File Standalone\Build.ps1 -Target All -CompileWorkers 12`. This uses `/fp:precise`; inspect `Standalone\Build\VoxelForgeCore\core-compile.rsp` to confirm.
+2. Run the resulting viewer on the L1 view twice, once with `--workers=1` and once with `--workers=12`, using `--world-assembler-prototype --stream-benchmark --stream-pipeline --stream-hash --force-generate --clip-radius=3 --max-clip-level=8 --camera=0,-35,-487.94,0,-22 --far-horizon-lod8-step=0`. Require the four L1 hashes both times and no self-test error.
+3. To validate the MSVC pragma under an explicitly contracted setting, make a temporary copy of `Build.ps1`, change its single `/fp:precise` entry to `/fp:fast`, and build it with `-OutputName VoxelForgeCoreStandalone-msvc-fast.exe`. Run the same W1/W12 L1 checks and require unchanged hashes and a passing self-test.
+4. Build the owner project's UE 5.7 Win64 Development Editor target (and its Server target if configured) with this plugin enabled. Save the actual UBT `cl.exe` commands for `VoxelForgeCore` and record `/fp:*`, `/fp:contract`, and any `/fp:fast` or `/fp:precise` options. Run the owner's existing seed-0 Core world/hash path at W1 and W12 and confirm the L1 result and passing self-test.
+
+MSVC-specific risks: the pragma has not been compiled here; `/fp:precise` contraction defaults changed at VS 2022 17.0; target configuration may add `/fp:fast` or `/fp:contract`; and UBT's module override must reach every Core source. Microsoft documents that the explicit pragma overrides `/fp:fast`, but the Windows build must confirm that the actual toolset honors it. `VoxelForgeCore.Build.cs` already disables PCH and unity builds, and each Core wrapper includes the pragma preamble.
+
+## Runs and limits
+
+No build, hash, sweep, or timing run failed or needed a retry. The two Clang `fast` exits were the expected negative control. Build variants were Clang 19.1.7 and GCC 14.2; builds and runs used CPUs 0–11, at most 12 jobs, normal priority, and a 6 GiB per-process address-space limit. Build peak RSS: 895,640 KiB (GCC); L1 hash-run peak: 551,004 KiB; seed-sweep peak: 306,580 KiB. The 8 MiB process stack was unchanged; Linux workers retain their existing 32 MiB stacks. Build artifacts are under `Standalone/Build/linux-l3-*` and `Standalone/bin/linux/`; logs are under `Saved/Linux/`.
+
+## Note for the owner
+
+Core now disables expression contraction for Clang, GCC, and MSVC, and rejects Clang fast when that compiler ignores the off pragma; all supported Linux settings retained the L1 hashes. Please validate the source pragma on native MSVC and capture UE 5.7 UBT's actual Windows and Linux compiler arguments, since those builds were not available here.
+
+## Orchestrator review (Claude)
+
+- Re-run by me on Luna's binaries, W12, L1 view: Clang `off` 2.299 s and Clang `on` 2.302 s, both density
+  `c10697a8f48380c7`; GCC default 2.469 s, also `c10697a8f48380c7`; Clang `fast` exits 2 with the self-test
+  refusal. Clang `on` and GCC default gave *different* worlds in L2, so the pragma is demonstrably effective.
+- Known gap (small): the pragma sits after the standard headers, `Json.h` and the public API header in the
+  preamble, so inline/template code defined there is not covered. All Core world math (Compat, `*Internal.h`,
+  legacy sources) comes after it.
+- The probe guards contraction only; `-ffast-math` reassociation is a separate risk (as Luna says). The
+  Windows to-do list above is the gate before claiming this on MSVC/UBT.

Standalone/Research/WorldAssemblerM3/Linux3/RunSeedSweep.py

@@ -0,0 +1,175 @@
+#!/usr/bin/env python3
+"""Run the corrected L3 seed/compiler/worker matrix with per-seed mesh coverage."""
+import csv
+import re
+import subprocess
+import sys
+import time
+from pathlib import Path
+
+ROOT = Path.cwd()
+ROUND = ROOT / "Standalone/Research/WorldAssemblerM3/Linux3"
+SEEDS = ROOT / "Standalone/Research/WorldAssemblerM3/Linux2/seeds.txt"
+LOG_DIR = ROOT / "Saved/Linux"
+MEASURE = ROOT / "Standalone/Research/WorldAssemblerM3/Linux2/MeasureProcess.py"
+DATA = ROOT / "Standalone/data/owner_world.json"
+BINARIES = {
+    "clang19-off": ROOT / "Standalone/bin/linux/VoxelForgeCoreHeadless-clang19-l3-off",
+    "clang19-on": ROOT / "Standalone/bin/linux/VoxelForgeCoreHeadless-clang19-l3-on",
+    "gcc14-default": ROOT / "Standalone/bin/linux/VoxelForgeCoreHeadless-gcc14-l3-default",
+}
+CAMERAS = {
+    "surface-world": "0,-35,-487.94,0,-22",
+    "floating-islands": "0,0,-32,0,-22",
+}
+HASH_RE = re.compile(
+    r"\[PipelineWholeViewHash\] tiles=(\d+) density=0x([0-9a-f]+) "
+    r"mesh=0x([0-9a-f]+) payload=0x([0-9a-f]+) topology=0x([0-9a-f]+)"
+)
+MESH_RE = re.compile(
+    r"\[PipelineMeshCoverage\] tiles=(\d+) nonempty_mesh_tiles=(\d+) indexed_triangles=(\d+)"
+)
+PLACEMENT_RE = re.compile(
+    r"\[SeedSurfacePlacement\].*camera_voxel=\(([-0-9.]+),([-0-9.]+),([-0-9.]+)\) status=PASS"
+)
+READY_RE = re.compile(r"\[StreamPipeline\].*whole_view_ready=([0-9.]+)s")
+RESOURCE_RE = re.compile(
+    r"\[ProcessResources\] exit_code=(-?\d+) wall_s=([0-9.]+) peak_rss_kib=(\d+)"
+)
+
+
+def main() -> int:
+    if len(sys.argv) > 2:
+        raise SystemExit("usage: RunSeedSweep.py [budget-seconds; default 1800]")
+    budget = int(sys.argv[1]) if len(sys.argv) == 2 else 1800
+    seeds = [int(line.strip()) for line in SEEDS.read_text().splitlines() if line.strip()]
+    if len(seeds) != 48 or len(set(seeds)) != 48:
+        raise SystemExit("expected the 48 unique signed int32 L2 seeds")
+    missing = [str(path) for path in [MEASURE, DATA, *BINARIES.values()] if not path.is_file()]
+    if missing:
+        raise SystemExit("missing sweep input/build: " + ", ".join(missing))
+
+    LOG_DIR.mkdir(parents=True, exist_ok=True)
+    output_path = ROUND / "seed_mesh_coverage.csv"
+    fields = [
+        "seed", "recipe", "compiler_setting", "workers", "tiles",
+        "nonempty_mesh_tiles", "indexed_triangles", "camera_x_vox", "camera_y_vox", "camera_z_vox",
+        "density_hash", "mesh_hash", "payload_hash", "topology_hash",
+        "whole_view_ready_s", "wall_s", "peak_rss_kib", "exit_code", "status",
+    ]
+    started = time.monotonic()
+    total = len(seeds) * len(CAMERAS) * len(BINARIES) * 2
+    print(f"L3 sweep: {len(seeds)} seeds x 2 recipes x 3 builds x W1/W12 = {total}; budget={budget}s", flush=True)
+    with output_path.open("w", newline="") as csv_file:
+        writer = csv.DictWriter(csv_file, fieldnames=fields)
+        writer.writeheader()
+        completed = 0
+        for seed in seeds:
+            for recipe, camera in CAMERAS.items():
+                for compiler, binary in BINARIES.items():
+                    for workers in (1, 12):
+                        remaining = budget - (time.monotonic() - started)
+                        if remaining <= 0:
+                            print("L3 sweep exceeded its 30-minute budget; stopping.", file=sys.stderr, flush=True)
+                            return 124
+                        stem = f"linux3-seed-{seed}-{recipe}-{compiler}-w{workers}"
+                        log_path = LOG_DIR / f"{stem}.log"
+                        args = [
+                            str(binary), str(DATA), f"--seed={seed}", f"--recipe={recipe}",
+                            "--render-distance-chunks=0", f"--workers={workers}",
+                            "--world-assembler-prototype", "--stream-benchmark", "--stream-pipeline",
+                            "--stream-hash", "--mesh-coverage", "--auto-surface-camera", "--force-generate",
+                            "--clip-radius=1", "--max-clip-level=0", f"--camera={camera}",
+                            "--far-horizon-lod8-step=0",
+                        ]
+                        command = [
+                            "taskset", "-c", "0-11", "prlimit", "--as=6442450944", "--",
+                            "python3", str(MEASURE), *args,
+                        ]
+                        with log_path.open("w") as log_file:
+                            log_file.write("[SweepCommand] " + " ".join(command) + "\n")
+                            log_file.flush()
+                            try:
+                                result = subprocess.run(
+                                    command, cwd=ROOT, stdout=log_file, stderr=subprocess.STDOUT,
+                                    timeout=min(900, max(1, remaining)), check=False,
+                                )
+                                exit_code = result.returncode
+                            except subprocess.TimeoutExpired:
+                                exit_code = 124
+                                log_file.write("\n[SweepTimeout] row reached its allotted limit\n")
+
+                        output = log_path.read_text(errors="replace")
+                        hashes = HASH_RE.search(output)
+                        mesh = MESH_RE.search(output)
+                        placement = PLACEMENT_RE.search(output)
+                        ready = READY_RE.search(output)
+                        resources = RESOURCE_RE.search(output)
+                        passed = bool(
+                            exit_code == 0 and hashes and mesh and placement and ready and resources
+                            and int(hashes.group(1)) == 27 and int(mesh.group(1)) == 27
+                            and int(mesh.group(2)) > 0 and int(mesh.group(3)) > 0
+                            and int(resources.group(1)) == 0
+                        )
+                        row = {
+                            "seed": seed, "recipe": recipe, "compiler_setting": compiler, "workers": workers,
+                            "tiles": mesh.group(1) if mesh else "",
+                            "nonempty_mesh_tiles": mesh.group(2) if mesh else "",
+                            "indexed_triangles": mesh.group(3) if mesh else "",
+                            "camera_x_vox": placement.group(1) if placement else "",
+                            "camera_y_vox": placement.group(2) if placement else "",
+                            "camera_z_vox": placement.group(3) if placement else "",
+                            "density_hash": "0x" + hashes.group(2) if hashes else "",
+                            "mesh_hash": "0x" + hashes.group(3) if hashes else "",
+                            "payload_hash": "0x" + hashes.group(4) if hashes else "",
+                            "topology_hash": "0x" + hashes.group(5) if hashes else "",
+                            "whole_view_ready_s": ready.group(1) if ready else "",
+                            "wall_s": resources.group(2) if resources else "",
+                            "peak_rss_kib": resources.group(3) if resources else "",
+                            "exit_code": exit_code, "status": "PASS" if passed else "FAIL",
+                        }
+                        writer.writerow(row)
+                        csv_file.flush()
+                        completed += 1
+                        print(
+                            f"[{completed}/{total}] seed={seed} recipe={recipe} build={compiler} W{workers} "
+                            f"nonempty={row['nonempty_mesh_tiles']}/27 triangles={row['indexed_triangles']} "
+                            f"wall={row['wall_s']}s status={row['status']} elapsed={time.monotonic()-started:.1f}s",
+                            flush=True,
+                        )
+                        if not passed:
+                            print(f"Failed row log: {log_path}", file=sys.stderr, flush=True)
+                            return exit_code or 1
+
+    rows = list(csv.DictReader(output_path.open(newline="")))
+    hash_columns = ("density_hash", "mesh_hash", "payload_hash", "topology_hash")
+    compiler_checks = []
+    worker_checks = []
+    for seed in seeds:
+        for recipe in CAMERAS:
+            for workers in (1, 12):
+                pair = [r for r in rows if int(r["seed"]) == seed and r["recipe"] == recipe
+                        and int(r["workers"]) == workers]
+                compiler_checks.append(len(pair) == len(BINARIES)
+                    and all(all(row[key] == pair[0][key] for key in hash_columns) for row in pair))
+            for compiler in BINARIES:
+                pair = [r for r in rows if int(r["seed"]) == seed and r["recipe"] == recipe
+                        and r["compiler_setting"] == compiler]
+                worker_checks.append(len(pair) == 2
+                    and all(all(row[key] == pair[0][key] for key in hash_columns) for row in pair))
+    elapsed = time.monotonic() - started
+    maximum_rss = max(int(row["peak_rss_kib"]) for row in rows)
+    empty_rows = sum(int(row["nonempty_mesh_tiles"]) == 0 or int(row["indexed_triangles"]) == 0 for row in rows)
+    summary = (
+        f"runs={len(rows)} seeds={len(seeds)} recipes={len(CAMERAS)} builds={len(BINARIES)} workers=1,12 "
+        f"cross_build_checks={len(compiler_checks)} cross_build_mismatches={sum(not x for x in compiler_checks)} "
+        f"worker_checks={len(worker_checks)} worker_mismatches={sum(not x for x in worker_checks)} "
+        f"empty_mesh_rows={empty_rows} max_peak_rss_kib={maximum_rss} elapsed_s={elapsed:.3f}\n"
+    )
+    (ROUND / "seed_mesh_coverage_summary.txt").write_text(summary)
+    print(summary, end="", flush=True)
+    return 0 if all(compiler_checks) and all(worker_checks) and empty_rows == 0 and elapsed <= budget else 3
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())

Standalone/Research/WorldAssemblerM3/Linux3/seed_mesh_coverage.csv

@@ -0,0 +1,577 @@
+seed,recipe,compiler_setting,workers,tiles,nonempty_mesh_tiles,indexed_triangles,camera_x_vox,camera_y_vox,camera_z_vox,density_hash,mesh_hash,payload_hash,topology_hash,whole_view_ready_s,wall_s,peak_rss_kib,exit_code,status
+-1990830953,surface-world,clang19-off,1,27,9,26366,0.000000,-140.000000,-2021.785156,0x125d085ff63ece8a,0x3f219420ffe76ceb,0x386c66f61f66fde5,0x9fc08404031eb99b,0.162,0.180221,84360,0,PASS
+-1990830953,surface-world,clang19-off,12,27,9,26366,0.000000,-140.000000,-2021.785156,0x125d085ff63ece8a,0x3f219420ffe76ceb,0x386c66f61f66fde5,0x9fc08404031eb99b,0.397,0.424425,294988,0,PASS
+-1990830953,surface-world,clang19-on,1,27,9,26366,0.000000,-140.000000,-2021.785156,0x125d085ff63ece8a,0x3f219420ffe76ceb,0x386c66f61f66fde5,0x9fc08404031eb99b,0.163,0.180433,84540,0,PASS
+-1990830953,surface-world,clang19-on,12,27,9,26366,0.000000,-140.000000,-2021.785156,0x125d085ff63ece8a,0x3f219420ffe76ceb,0x386c66f61f66fde5,0x9fc08404031eb99b,0.401,0.427873,294656,0,PASS
+-1990830953,surface-world,gcc14-default,1,27,9,26366,0.000000,-140.000000,-2021.785156,0x125d085ff63ece8a,0x3f219420ffe76ceb,0x386c66f61f66fde5,0x9fc08404031eb99b,0.152,0.167928,84996,0,PASS
+-1990830953,surface-world,gcc14-default,12,27,9,26366,0.000000,-140.000000,-2021.785156,0x125d085ff63ece8a,0x3f219420ffe76ceb,0x386c66f61f66fde5,0x9fc08404031eb99b,0.398,0.424793,295392,0,PASS
+-1990830953,floating-islands,clang19-off,1,27,12,23386,-39.199219,16.363281,-121.039062,0xc04ef8acd44d8736,0x00e92c97d841dfe5,0xb57496fb3be7da11,0x64b0c5c3655299c2,0.872,0.887909,85248,0,PASS
+-1990830953,floating-islands,clang19-off,12,27,12,23386,-39.199219,16.363281,-121.039062,0xc04ef8acd44d8736,0x00e92c97d841dfe5,0xb57496fb3be7da11,0x64b0c5c3655299c2,0.549,0.575731,300132,0,PASS
+-1990830953,floating-islands,clang19-on,1,27,12,23386,-39.199219,16.363281,-121.039062,0xc04ef8acd44d8736,0x00e92c97d841dfe5,0xb57496fb3be7da11,0x64b0c5c3655299c2,0.884,0.901147,85000,0,PASS
+-1990830953,floating-islands,clang19-on,12,27,12,23386,-39.199219,16.363281,-121.039062,0xc04ef8acd44d8736,0x00e92c97d841dfe5,0xb57496fb3be7da11,0x64b0c5c3655299c2,0.578,0.605578,299564,0,PASS
+-1990830953,floating-islands,gcc14-default,1,27,12,23386,-39.199219,16.363281,-121.039062,0xc04ef8acd44d8736,0x00e92c97d841dfe5,0xb57496fb3be7da11,0x64b0c5c3655299c2,0.943,0.959068,85752,0,PASS
+-1990830953,floating-islands,gcc14-default,12,27,12,23386,-39.199219,16.363281,-121.039062,0xc04ef8acd44d8736,0x00e92c97d841dfe5,0xb57496fb3be7da11,0x64b0c5c3655299c2,0.588,0.614935,300548,0,PASS
+-1900684165,surface-world,clang19-off,1,27,10,27890,0.000000,-140.000000,-2011.214844,0xcc9819b02bd2f880,0x8cbe19f740d2b408,0xbe822577766381d4,0x69b6a50c6286fdf7,0.185,0.202214,89956,0,PASS
+-1900684165,surface-world,clang19-off,12,27,10,27890,0.000000,-140.000000,-2011.214844,0xcc9819b02bd2f880,0x8cbe19f740d2b408,0xbe822577766381d4,0x69b6a50c6286fdf7,0.418,0.446199,301944,0,PASS
+-1900684165,surface-world,clang19-on,1,27,10,27890,0.000000,-140.000000,-2011.214844,0xcc9819b02bd2f880,0x8cbe19f740d2b408,0xbe822577766381d4,0x69b6a50c6286fdf7,0.177,0.193134,89684,0,PASS
+-1900684165,surface-world,clang19-on,12,27,10,27890,0.000000,-140.000000,-2011.214844,0xcc9819b02bd2f880,0x8cbe19f740d2b408,0xbe822577766381d4,0x69b6a50c6286fdf7,0.438,0.466528,301656,0,PASS
+-1900684165,surface-world,gcc14-default,1,27,10,27890,0.000000,-140.000000,-2011.214844,0xcc9819b02bd2f880,0x8cbe19f740d2b408,0xbe822577766381d4,0x69b6a50c6286fdf7,0.180,0.196807,90492,0,PASS
+-1900684165,surface-world,gcc14-default,12,27,10,27890,0.000000,-140.000000,-2011.214844,0xcc9819b02bd2f880,0x8cbe19f740d2b408,0xbe822577766381d4,0x69b6a50c6286fdf7,0.442,0.468384,300628,0,PASS
+-1900684165,floating-islands,clang19-off,1,27,10,23186,39.199219,17.675781,-116.339844,0xfc7386c15431e2e1,0x46ce25dfb3745f53,0x97c9ffd0022012ad,0x64303145c5cc6d24,1.558,1.574129,89380,0,PASS
+-1900684165,floating-islands,clang19-off,12,27,10,23186,39.199219,17.675781,-116.339844,0xfc7386c15431e2e1,0x46ce25dfb3745f53,0x97c9ffd0022012ad,0x64303145c5cc6d24,0.699,0.726109,303932,0,PASS
+-1900684165,floating-islands,clang19-on,1,27,10,23186,39.199219,17.675781,-116.339844,0xfc7386c15431e2e1,0x46ce25dfb3745f53,0x97c9ffd0022012ad,0x64303145c5cc6d24,1.599,1.615516,89308,0,PASS
+-1900684165,floating-islands,clang19-on,12,27,10,23186,39.199219,17.675781,-116.339844,0xfc7386c15431e2e1,0x46ce25dfb3745f53,0x97c9ffd0022012ad,0x64303145c5cc6d24,0.727,0.755017,303964,0,PASS
+-1900684165,floating-islands,gcc14-default,1,27,10,23186,39.199219,17.675781,-116.339844,0xfc7386c15431e2e1,0x46ce25dfb3745f53,0x97c9ffd0022012ad,0x64303145c5cc6d24,1.692,1.708073,89664,0,PASS
+-1900684165,floating-islands,gcc14-default,12,27,10,23186,39.199219,17.675781,-116.339844,0xfc7386c15431e2e1,0x46ce25dfb3745f53,0x97c9ffd0022012ad,0x64303145c5cc6d24,0.763,0.790272,304528,0,PASS
+-1766412538,surface-world,clang19-off,1,27,9,27572,0.000000,-140.000000,-2004.851562,0x4d04ec633754c4ec,0xca8833dcfe9639d3,0x0a4008899d91f10e,0x2d6116327735df9a,0.181,0.196881,84084,0,PASS
+-1766412538,surface-world,clang19-off,12,27,9,27572,0.000000,-140.000000,-2004.851562,0x4d04ec633754c4ec,0xca8833dcfe9639d3,0x0a4008899d91f10e,0x2d6116327735df9a,0.414,0.439405,294580,0,PASS
+-1766412538,surface-world,clang19-on,1,27,9,27572,0.000000,-140.000000,-2004.851562,0x4d04ec633754c4ec,0xca8833dcfe9639d3,0x0a4008899d91f10e,0x2d6116327735df9a,0.181,0.196772,84172,0,PASS
+-1766412538,surface-world,clang19-on,12,27,9,27572,0.000000,-140.000000,-2004.851562,0x4d04ec633754c4ec,0xca8833dcfe9639d3,0x0a4008899d91f10e,0x2d6116327735df9a,0.412,0.438983,294880,0,PASS
+-1766412538,surface-world,gcc14-default,1,27,9,27572,0.000000,-140.000000,-2004.851562,0x4d04ec633754c4ec,0xca8833dcfe9639d3,0x0a4008899d91f10e,0x2d6116327735df9a,0.175,0.192855,84688,0,PASS
+-1766412538,surface-world,gcc14-default,12,27,9,27572,0.000000,-140.000000,-2004.851562,0x4d04ec633754c4ec,0xca8833dcfe9639d3,0x0a4008899d91f10e,0x2d6116327735df9a,0.430,0.455090,295516,0,PASS
+-1766412538,floating-islands,clang19-off,1,27,12,23618,-25.199219,-73.816406,-135.394531,0xdb6557b98f29060e,0x3b3147a1d020ca02,0x010127525a940a1e,0xc9563575ca60b627,1.542,1.556645,86260,0,PASS
+-1766412538,floating-islands,clang19-off,12,27,12,23618,-25.199219,-73.816406,-135.394531,0xdb6557b98f29060e,0x3b3147a1d020ca02,0x010127525a940a1e,0xc9563575ca60b627,0.673,0.699377,300448,0,PASS
+-1766412538,floating-islands,clang19-on,1,27,12,23618,-25.199219,-73.816406,-135.394531,0xdb6557b98f29060e,0x3b3147a1d020ca02,0x010127525a940a1e,0xc9563575ca60b627,1.587,1.602433,86588,0,PASS
+-1766412538,floating-islands,clang19-on,12,27,12,23618,-25.199219,-73.816406,-135.394531,0xdb6557b98f29060e,0x3b3147a1d020ca02,0x010127525a940a1e,0xc9563575ca60b627,0.702,0.728925,300536,0,PASS
+-1766412538,floating-islands,gcc14-default,1,27,12,23618,-25.199219,-73.816406,-135.394531,0xdb6557b98f29060e,0x3b3147a1d020ca02,0x010127525a940a1e,0xc9563575ca60b627,1.744,1.760677,87052,0,PASS
+-1766412538,floating-islands,gcc14-default,12,27,12,23618,-25.199219,-73.816406,-135.394531,0xdb6557b98f29060e,0x3b3147a1d020ca02,0x010127525a940a1e,0xc9563575ca60b627,0.741,0.770803,301248,0,PASS
+-1721984596,surface-world,clang19-off,1,27,9,27374,0.000000,-140.000000,-2006.878906,0x65b6ae0a3a1fdd35,0x117d40e403c960bc,0x9bc7a92591e7d7e3,0x988675caf5879337,0.172,0.187451,84428,0,PASS
+-1721984596,surface-world,clang19-off,12,27,9,27374,0.000000,-140.000000,-2006.878906,0x65b6ae0a3a1fdd35,0x117d40e403c960bc,0x9bc7a92591e7d7e3,0x988675caf5879337,0.424,0.450959,294996,0,PASS
+-1721984596,surface-world,clang19-on,1,27,9,27374,0.000000,-140.000000,-2006.878906,0x65b6ae0a3a1fdd35,0x117d40e403c960bc,0x9bc7a92591e7d7e3,0x988675caf5879337,0.183,0.199333,84536,0,PASS
+-1721984596,surface-world,clang19-on,12,27,9,27374,0.000000,-140.000000,-2006.878906,0x65b6ae0a3a1fdd35,0x117d40e403c960bc,0x9bc7a92591e7d7e3,0x988675caf5879337,0.426,0.452557,294916,0,PASS
+-1721984596,surface-world,gcc14-default,1,27,9,27374,0.000000,-140.000000,-2006.878906,0x65b6ae0a3a1fdd35,0x117d40e403c960bc,0x9bc7a92591e7d7e3,0x988675caf5879337,0.178,0.193728,85196,0,PASS
+-1721984596,surface-world,gcc14-default,12,27,9,27374,0.000000,-140.000000,-2006.878906,0x65b6ae0a3a1fdd35,0x117d40e403c960bc,0x9bc7a92591e7d7e3,0x988675caf5879337,0.427,0.454505,295184,0,PASS
+-1721984596,floating-islands,clang19-off,1,27,10,23728,64.398438,74.085938,-128.433594,0xbb7777932cd3328a,0x5d7243f5afb8902a,0xdb6cef72728d0d64,0x625882823c87a40b,1.554,1.570584,85220,0,PASS
+-1721984596,floating-islands,clang19-off,12,27,10,23728,64.398438,74.085938,-128.433594,0xbb7777932cd3328a,0x5d7243f5afb8902a,0xdb6cef72728d0d64,0x625882823c87a40b,0.718,0.745795,300772,0,PASS
+-1721984596,floating-islands,clang19-on,1,27,10,23728,64.398438,74.085938,-128.433594,0xbb7777932cd3328a,0x5d7243f5afb8902a,0xdb6cef72728d0d64,0x625882823c87a40b,1.578,1.593432,85580,0,PASS
+-1721984596,floating-islands,clang19-on,12,27,10,23728,64.398438,74.085938,-128.433594,0xbb7777932cd3328a,0x5d7243f5afb8902a,0xdb6cef72728d0d64,0x625882823c87a40b,0.708,0.734658,299780,0,PASS
+-1721984596,floating-islands,gcc14-default,1,27,10,23728,64.398438,74.085938,-128.433594,0xbb7777932cd3328a,0x5d7243f5afb8902a,0xdb6cef72728d0d64,0x625882823c87a40b,1.714,1.730034,85816,0,PASS
+-1721984596,floating-islands,gcc14-default,12,27,10,23728,64.398438,74.085938,-128.433594,0xbb7777932cd3328a,0x5d7243f5afb8902a,0xdb6cef72728d0d64,0x625882823c87a40b,0.757,0.784127,301460,0,PASS
+-1239598758,surface-world,clang19-off,1,27,15,38978,0.000000,-140.000000,-2001.816406,0x8aaf7c7c610e550f,0xeaa948233176c456,0x32c71b1231361cd2,0xecd43272e8d589a7,0.269,0.284560,84356,0,PASS
+-1239598758,surface-world,clang19-off,12,27,15,38978,0.000000,-140.000000,-2001.816406,0x8aaf7c7c610e550f,0xeaa948233176c456,0x32c71b1231361cd2,0xecd43272e8d589a7,0.447,0.473801,299712,0,PASS
+-1239598758,surface-world,clang19-on,1,27,15,38978,0.000000,-140.000000,-2001.816406,0x8aaf7c7c610e550f,0xeaa948233176c456,0x32c71b1231361cd2,0xecd43272e8d589a7,0.277,0.293296,84584,0,PASS
+-1239598758,surface-world,clang19-on,12,27,15,38978,0.000000,-140.000000,-2001.816406,0x8aaf7c7c610e550f,0xeaa948233176c456,0x32c71b1231361cd2,0xecd43272e8d589a7,0.460,0.486378,298388,0,PASS
+-1239598758,surface-world,gcc14-default,1,27,15,38978,0.000000,-140.000000,-2001.816406,0x8aaf7c7c610e550f,0xeaa948233176c456,0x32c71b1231361cd2,0xecd43272e8d589a7,0.261,0.276573,84996,0,PASS
+-1239598758,surface-world,gcc14-default,12,27,15,38978,0.000000,-140.000000,-2001.816406,0x8aaf7c7c610e550f,0xeaa948233176c456,0x32c71b1231361cd2,0xecd43272e8d589a7,0.464,0.492223,300696,0,PASS
+-1239598758,floating-islands,clang19-off,1,27,12,28162,39.199219,19.425781,-116.691406,0x9ee03f2326224bbc,0x0ea03da61381b41a,0x4b658d0bd4e527e6,0x402b075c754192e3,1.280,1.297085,85588,0,PASS
+-1239598758,floating-islands,clang19-off,12,27,12,28162,39.199219,19.425781,-116.691406,0x9ee03f2326224bbc,0x0ea03da61381b41a,0x4b658d0bd4e527e6,0x402b075c754192e3,0.642,0.669720,300940,0,PASS
+-1239598758,floating-islands,clang19-on,1,27,12,28162,39.199219,19.425781,-116.691406,0x9ee03f2326224bbc,0x0ea03da61381b41a,0x4b658d0bd4e527e6,0x402b075c754192e3,1.324,1.342774,85712,0,PASS
+-1239598758,floating-islands,clang19-on,12,27,12,28162,39.199219,19.425781,-116.691406,0x9ee03f2326224bbc,0x0ea03da61381b41a,0x4b658d0bd4e527e6,0x402b075c754192e3,0.637,0.664175,300712,0,PASS
+-1239598758,floating-islands,gcc14-default,1,27,12,28162,39.199219,19.425781,-116.691406,0x9ee03f2326224bbc,0x0ea03da61381b41a,0x4b658d0bd4e527e6,0x402b075c754192e3,1.465,1.480710,85820,0,PASS
+-1239598758,floating-islands,gcc14-default,12,27,12,28162,39.199219,19.425781,-116.691406,0x9ee03f2326224bbc,0x0ea03da61381b41a,0x4b658d0bd4e527e6,0x402b075c754192e3,0.678,0.706467,301428,0,PASS
+-1085993262,surface-world,clang19-off,1,27,13,30779,0.000000,-140.000000,-2018.355469,0x6dd63983ab04ee63,0x606e6964e1b2bfa0,0x30f2ccb9c65750ff,0x72fb3b77904151b8,0.203,0.219019,84900,0,PASS
+-1085993262,surface-world,clang19-off,12,27,13,30779,0.000000,-140.000000,-2018.355469,0x6dd63983ab04ee63,0x606e6964e1b2bfa0,0x30f2ccb9c65750ff,0x72fb3b77904151b8,0.442,0.468936,300076,0,PASS
+-1085993262,surface-world,clang19-on,1,27,13,30779,0.000000,-140.000000,-2018.355469,0x6dd63983ab04ee63,0x606e6964e1b2bfa0,0x30f2ccb9c65750ff,0x72fb3b77904151b8,0.209,0.226037,84848,0,PASS
+-1085993262,surface-world,clang19-on,12,27,13,30779,0.000000,-140.000000,-2018.355469,0x6dd63983ab04ee63,0x606e6964e1b2bfa0,0x30f2ccb9c65750ff,0x72fb3b77904151b8,0.434,0.461038,299916,0,PASS
+-1085993262,surface-world,gcc14-default,1,27,13,30779,0.000000,-140.000000,-2018.355469,0x6dd63983ab04ee63,0x606e6964e1b2bfa0,0x30f2ccb9c65750ff,0x72fb3b77904151b8,0.194,0.212574,85588,0,PASS
+-1085993262,surface-world,gcc14-default,12,27,13,30779,0.000000,-140.000000,-2018.355469,0x6dd63983ab04ee63,0x606e6964e1b2bfa0,0x30f2ccb9c65750ff,0x72fb3b77904151b8,0.421,0.449569,300836,0,PASS
+-1085993262,floating-islands,clang19-off,1,27,11,25186,-39.199219,16.968750,-116.531250,0x8dec867557d4e27c,0x13de3a8f9465573d,0x2e2ca36cfff2558a,0x42ad0d371549e563,1.085,1.101264,86672,0,PASS
+-1085993262,floating-islands,clang19-off,12,27,11,25186,-39.199219,16.968750,-116.531250,0x8dec867557d4e27c,0x13de3a8f9465573d,0x2e2ca36cfff2558a,0x42ad0d371549e563,0.573,0.602307,301496,0,PASS
+-1085993262,floating-islands,clang19-on,1,27,11,25186,-39.199219,16.968750,-116.531250,0x8dec867557d4e27c,0x13de3a8f9465573d,0x2e2ca36cfff2558a,0x42ad0d371549e563,1.085,1.100702,86848,0,PASS
+-1085993262,floating-islands,clang19-on,12,27,11,25186,-39.199219,16.968750,-116.531250,0x8dec867557d4e27c,0x13de3a8f9465573d,0x2e2ca36cfff2558a,0x42ad0d371549e563,0.576,0.603241,301652,0,PASS
+-1085993262,floating-islands,gcc14-default,1,27,11,25186,-39.199219,16.968750,-116.531250,0x8dec867557d4e27c,0x13de3a8f9465573d,0x2e2ca36cfff2558a,0x42ad0d371549e563,1.195,1.210876,87352,0,PASS
+-1085993262,floating-islands,gcc14-default,12,27,11,25186,-39.199219,16.968750,-116.531250,0x8dec867557d4e27c,0x13de3a8f9465573d,0x2e2ca36cfff2558a,0x42ad0d371549e563,0.617,0.646640,302080,0,PASS
+-1033703345,surface-world,clang19-off,1,27,16,50890,0.000000,-140.000000,-1585.519531,0xe2f8c4b421a9402a,0x730fd7c4692eaff3,0xacf64857ef930634,0x86e7853e9d0b4a35,0.342,0.358880,85076,0,PASS
+-1033703345,surface-world,clang19-off,12,27,16,50890,0.000000,-140.000000,-1585.519531,0xe2f8c4b421a9402a,0x730fd7c4692eaff3,0xacf64857ef930634,0x86e7853e9d0b4a35,0.451,0.477876,301748,0,PASS
+-1033703345,surface-world,clang19-on,1,27,16,50890,0.000000,-140.000000,-1585.519531,0xe2f8c4b421a9402a,0x730fd7c4692eaff3,0xacf64857ef930634,0x86e7853e9d0b4a35,0.318,0.334873,84996,0,PASS
+-1033703345,surface-world,clang19-on,12,27,16,50890,0.000000,-140.000000,-1585.519531,0xe2f8c4b421a9402a,0x730fd7c4692eaff3,0xacf64857ef930634,0x86e7853e9d0b4a35,0.461,0.490652,301616,0,PASS
+-1033703345,surface-world,gcc14-default,1,27,16,50890,0.000000,-140.000000,-1585.519531,0xe2f8c4b421a9402a,0x730fd7c4692eaff3,0xacf64857ef930634,0x86e7853e9d0b4a35,0.305,0.322211,85560,0,PASS
+-1033703345,surface-world,gcc14-default,12,27,16,50890,0.000000,-140.000000,-1585.519531,0xe2f8c4b421a9402a,0x730fd7c4692eaff3,0xacf64857ef930634,0x86e7853e9d0b4a35,0.476,0.502916,302484,0,PASS
+-1033703345,floating-islands,clang19-off,1,27,10,17406,-25.199219,-75.605469,-128.097656,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590,0x570a869c76c15846,0x8139f7fb5146e402,2.065,2.083040,86192,0,PASS
+-1033703345,floating-islands,clang19-off,12,27,10,17406,-25.199219,-75.605469,-128.097656,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590,0x570a869c76c15846,0x8139f7fb5146e402,0.776,0.804394,299624,0,PASS
+-1033703345,floating-islands,clang19-on,1,27,10,17406,-25.199219,-75.605469,-128.097656,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590,0x570a869c76c15846,0x8139f7fb5146e402,1.996,2.016862,86136,0,PASS
+-1033703345,floating-islands,clang19-on,12,27,10,17406,-25.199219,-75.605469,-128.097656,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590,0x570a869c76c15846,0x8139f7fb5146e402,0.841,0.879778,299580,0,PASS
+-1033703345,floating-islands,gcc14-default,1,27,10,17406,-25.199219,-75.605469,-128.097656,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590,0x570a869c76c15846,0x8139f7fb5146e402,1.997,2.013598,86416,0,PASS
+-1033703345,floating-islands,gcc14-default,12,27,10,17406,-25.199219,-75.605469,-128.097656,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590,0x570a869c76c15846,0x8139f7fb5146e402,0.820,0.848116,300464,0,PASS
+-854671705,surface-world,clang19-off,1,27,10,26198,0.000000,-140.000000,-2018.242188,0x0a9e017447ffff3d,0x807299923966d5be,0xdd97f14916c8157a,0x95313b997ff55c26,0.216,0.232793,83632,0,PASS
+-854671705,surface-world,clang19-off,12,27,10,26198,0.000000,-140.000000,-2018.242188,0x0a9e017447ffff3d,0x807299923966d5be,0xdd97f14916c8157a,0x95313b997ff55c26,0.462,0.492727,295640,0,PASS
+-854671705,surface-world,clang19-on,1,27,10,26198,0.000000,-140.000000,-2018.242188,0x0a9e017447ffff3d,0x807299923966d5be,0xdd97f14916c8157a,0x95313b997ff55c26,0.210,0.225523,83756,0,PASS
+-854671705,surface-world,clang19-on,12,27,10,26198,0.000000,-140.000000,-2018.242188,0x0a9e017447ffff3d,0x807299923966d5be,0xdd97f14916c8157a,0x95313b997ff55c26,0.460,0.486882,295460,0,PASS
+-854671705,surface-world,gcc14-default,1,27,10,26198,0.000000,-140.000000,-2018.242188,0x0a9e017447ffff3d,0x807299923966d5be,0xdd97f14916c8157a,0x95313b997ff55c26,0.204,0.220779,84224,0,PASS
+-854671705,surface-world,gcc14-default,12,27,10,26198,0.000000,-140.000000,-2018.242188,0x0a9e017447ffff3d,0x807299923966d5be,0xdd97f14916c8157a,0x95313b997ff55c26,0.447,0.476285,295724,0,PASS
+-854671705,floating-islands,clang19-off,1,27,13,39000,0.000000,-19.800781,-116.507812,0xbb5718ca3ad4c181,0x3250d2591365d443,0xec60f80b7f67216b,0xfe710427da53178b,1.858,1.873454,84868,0,PASS
+-854671705,floating-islands,clang19-off,12,27,13,39000,0.000000,-19.800781,-116.507812,0xbb5718ca3ad4c181,0x3250d2591365d443,0xec60f80b7f67216b,0xfe710427da53178b,0.769,0.797051,301256,0,PASS
+-854671705,floating-islands,clang19-on,1,27,13,39000,0.000000,-19.800781,-116.507812,0xbb5718ca3ad4c181,0x3250d2591365d443,0xec60f80b7f67216b,0xfe710427da53178b,1.927,1.944057,84916,0,PASS
+-854671705,floating-islands,clang19-on,12,27,13,39000,0.000000,-19.800781,-116.507812,0xbb5718ca3ad4c181,0x3250d2591365d443,0xec60f80b7f67216b,0xfe710427da53178b,0.798,0.826241,300776,0,PASS
+-854671705,floating-islands,gcc14-default,1,27,13,39000,0.000000,-19.800781,-116.507812,0xbb5718ca3ad4c181,0x3250d2591365d443,0xec60f80b7f67216b,0xfe710427da53178b,1.908,1.924264,85304,0,PASS
+-854671705,floating-islands,gcc14-default,12,27,13,39000,0.000000,-19.800781,-116.507812,0xbb5718ca3ad4c181,0x3250d2591365d443,0xec60f80b7f67216b,0xfe710427da53178b,0.804,0.831547,301148,0,PASS
+-713963806,surface-world,clang19-off,1,27,16,30292,0.000000,-140.000000,-2018.582031,0x0bdd79cefc1c4003,0x9807c528ec8ea0e6,0x3f6ba7ffdf385024,0x7183d3025a48e8ea,0.211,0.228046,85784,0,PASS
+-713963806,surface-world,clang19-off,12,27,16,30292,0.000000,-140.000000,-2018.582031,0x0bdd79cefc1c4003,0x9807c528ec8ea0e6,0x3f6ba7ffdf385024,0x7183d3025a48e8ea,0.443,0.470682,300976,0,PASS
+-713963806,surface-world,clang19-on,1,27,16,30292,0.000000,-140.000000,-2018.582031,0x0bdd79cefc1c4003,0x9807c528ec8ea0e6,0x3f6ba7ffdf385024,0x7183d3025a48e8ea,0.210,0.226264,86008,0,PASS
+-713963806,surface-world,clang19-on,12,27,16,30292,0.000000,-140.000000,-2018.582031,0x0bdd79cefc1c4003,0x9807c528ec8ea0e6,0x3f6ba7ffdf385024,0x7183d3025a48e8ea,0.416,0.444035,300924,0,PASS
+-713963806,surface-world,gcc14-default,1,27,16,30292,0.000000,-140.000000,-2018.582031,0x0bdd79cefc1c4003,0x9807c528ec8ea0e6,0x3f6ba7ffdf385024,0x7183d3025a48e8ea,0.214,0.230669,86420,0,PASS
+-713963806,surface-world,gcc14-default,12,27,16,30292,0.000000,-140.000000,-2018.582031,0x0bdd79cefc1c4003,0x9807c528ec8ea0e6,0x3f6ba7ffdf385024,0x7183d3025a48e8ea,0.417,0.445410,301040,0,PASS
+-713963806,floating-islands,clang19-off,1,27,8,16002,64.398438,74.308594,-120.453125,0xd590c16395cc515f,0x3a62d63b76bdd260,0x9424147669e1808f,0x137dd286dcedcad6,1.356,1.372073,84768,0,PASS
+-713963806,floating-islands,clang19-off,12,27,8,16002,64.398438,74.308594,-120.453125,0xd590c16395cc515f,0x3a62d63b76bdd260,0x9424147669e1808f,0x137dd286dcedcad6,0.676,0.703891,297840,0,PASS
+-713963806,floating-islands,clang19-on,1,27,8,16002,64.398438,74.308594,-120.453125,0xd590c16395cc515f,0x3a62d63b76bdd260,0x9424147669e1808f,0x137dd286dcedcad6,1.360,1.376357,84572,0,PASS
+-713963806,floating-islands,clang19-on,12,27,8,16002,64.398438,74.308594,-120.453125,0xd590c16395cc515f,0x3a62d63b76bdd260,0x9424147669e1808f,0x137dd286dcedcad6,0.655,0.682658,297928,0,PASS
+-713963806,floating-islands,gcc14-default,1,27,8,16002,64.398438,74.308594,-120.453125,0xd590c16395cc515f,0x3a62d63b76bdd260,0x9424147669e1808f,0x137dd286dcedcad6,1.293,1.309713,85500,0,PASS
+-713963806,floating-islands,gcc14-default,12,27,8,16002,64.398438,74.308594,-120.453125,0xd590c16395cc515f,0x3a62d63b76bdd260,0x9424147669e1808f,0x137dd286dcedcad6,0.656,0.682912,298628,0,PASS
+-621039221,surface-world,clang19-off,1,27,17,30168,0.000000,-140.000000,-2015.613281,0xa27c25107de22a4d,0xde2ffe789eb7fb05,0x966dae7a483679d3,0xf608770036c256a5,0.195,0.211023,85856,0,PASS
+-621039221,surface-world,clang19-off,12,27,17,30168,0.000000,-140.000000,-2015.613281,0xa27c25107de22a4d,0xde2ffe789eb7fb05,0x966dae7a483679d3,0xf608770036c256a5,0.426,0.453981,301240,0,PASS
+-621039221,surface-world,clang19-on,1,27,17,30168,0.000000,-140.000000,-2015.613281,0xa27c25107de22a4d,0xde2ffe789eb7fb05,0x966dae7a483679d3,0xf608770036c256a5,0.192,0.208197,86544,0,PASS
+-621039221,surface-world,clang19-on,12,27,17,30168,0.000000,-140.000000,-2015.613281,0xa27c25107de22a4d,0xde2ffe789eb7fb05,0x966dae7a483679d3,0xf608770036c256a5,0.427,0.454462,301016,0,PASS
+-621039221,surface-world,gcc14-default,1,27,17,30168,0.000000,-140.000000,-2015.613281,0xa27c25107de22a4d,0xde2ffe789eb7fb05,0x966dae7a483679d3,0xf608770036c256a5,0.194,0.212277,86740,0,PASS
+-621039221,surface-world,gcc14-default,12,27,17,30168,0.000000,-140.000000,-2015.613281,0xa27c25107de22a4d,0xde2ffe789eb7fb05,0x966dae7a483679d3,0xf608770036c256a5,0.407,0.437082,301508,0,PASS
+-621039221,floating-islands,clang19-off,1,27,15,46224,0.000000,-18.796875,-116.769531,0x8bf4ceae8c1ddbf6,0x61557967c37529fe,0xbe41280640aaac59,0xd511ae5cd4a47551,1.622,1.638054,87236,0,PASS
+-621039221,floating-islands,clang19-off,12,27,15,46224,0.000000,-18.796875,-116.769531,0x8bf4ceae8c1ddbf6,0x61557967c37529fe,0xbe41280640aaac59,0xd511ae5cd4a47551,0.688,0.715350,304400,0,PASS
+-621039221,floating-islands,clang19-on,1,27,15,46224,0.000000,-18.796875,-116.769531,0x8bf4ceae8c1ddbf6,0x61557967c37529fe,0xbe41280640aaac59,0xd511ae5cd4a47551,1.623,1.638541,87444,0,PASS
+-621039221,floating-islands,clang19-on,12,27,15,46224,0.000000,-18.796875,-116.769531,0x8bf4ceae8c1ddbf6,0x61557967c37529fe,0xbe41280640aaac59,0xd511ae5cd4a47551,0.717,0.744065,303692,0,PASS
+-621039221,floating-islands,gcc14-default,1,27,15,46224,0.000000,-18.796875,-116.769531,0x8bf4ceae8c1ddbf6,0x61557967c37529fe,0xbe41280640aaac59,0xd511ae5cd4a47551,1.757,1.775436,87644,0,PASS
+-621039221,floating-islands,gcc14-default,12,27,15,46224,0.000000,-18.796875,-116.769531,0x8bf4ceae8c1ddbf6,0x61557967c37529fe,0xbe41280640aaac59,0xd511ae5cd4a47551,0.731,0.760059,304508,0,PASS
+-474448608,surface-world,clang19-off,1,27,11,28424,0.000000,-140.000000,-2020.160156,0x0d40ad842a0123ea,0x273fb800c1246cac,0x7a8c602b445dc956,0xd0584f94b9e78e65,0.169,0.185724,84116,0,PASS
+-474448608,surface-world,clang19-off,12,27,11,28424,0.000000,-140.000000,-2020.160156,0x0d40ad842a0123ea,0x273fb800c1246cac,0x7a8c602b445dc956,0xd0584f94b9e78e65,0.407,0.433876,297484,0,PASS
+-474448608,surface-world,clang19-on,1,27,11,28424,0.000000,-140.000000,-2020.160156,0x0d40ad842a0123ea,0x273fb800c1246cac,0x7a8c602b445dc956,0xd0584f94b9e78e65,0.171,0.188006,84236,0,PASS
+-474448608,surface-world,clang19-on,12,27,11,28424,0.000000,-140.000000,-2020.160156,0x0d40ad842a0123ea,0x273fb800c1246cac,0x7a8c602b445dc956,0xd0584f94b9e78e65,0.435,0.461874,296040,0,PASS
+-474448608,surface-world,gcc14-default,1,27,11,28424,0.000000,-140.000000,-2020.160156,0x0d40ad842a0123ea,0x273fb800c1246cac,0x7a8c602b445dc956,0xd0584f94b9e78e65,0.165,0.180445,84884,0,PASS
+-474448608,surface-world,gcc14-default,12,27,11,28424,0.000000,-140.000000,-2020.160156,0x0d40ad842a0123ea,0x273fb800c1246cac,0x7a8c602b445dc956,0xd0584f94b9e78e65,0.426,0.453272,298176,0,PASS
+-474448608,floating-islands,clang19-off,1,27,12,26122,-39.199219,20.921875,-121.671875,0x2a634b2a3d2e38ef,0x52d2036bf1406614,0x0f3ab05afb9043d4,0x47b6e01bb7fbb7ba,1.629,1.645685,86612,0,PASS
+-474448608,floating-islands,clang19-off,12,27,12,26122,-39.199219,20.921875,-121.671875,0x2a634b2a3d2e38ef,0x52d2036bf1406614,0x0f3ab05afb9043d4,0x47b6e01bb7fbb7ba,0.726,0.754007,301436,0,PASS
+-474448608,floating-islands,clang19-on,1,27,12,26122,-39.199219,20.921875,-121.671875,0x2a634b2a3d2e38ef,0x52d2036bf1406614,0x0f3ab05afb9043d4,0x47b6e01bb7fbb7ba,1.622,1.638207,86372,0,PASS
+-474448608,floating-islands,clang19-on,12,27,12,26122,-39.199219,20.921875,-121.671875,0x2a634b2a3d2e38ef,0x52d2036bf1406614,0x0f3ab05afb9043d4,0x47b6e01bb7fbb7ba,0.718,0.747095,301408,0,PASS
+-474448608,floating-islands,gcc14-default,1,27,12,26122,-39.199219,20.921875,-121.671875,0x2a634b2a3d2e38ef,0x52d2036bf1406614,0x0f3ab05afb9043d4,0x47b6e01bb7fbb7ba,1.768,1.787964,87120,0,PASS
+-474448608,floating-islands,gcc14-default,12,27,12,26122,-39.199219,20.921875,-121.671875,0x2a634b2a3d2e38ef,0x52d2036bf1406614,0x0f3ab05afb9043d4,0x47b6e01bb7fbb7ba,0.743,0.770994,301472,0,PASS
+-432690581,surface-world,clang19-off,1,27,16,44640,0.000000,-140.000000,-1699.710938,0x3a23c958501ee719,0x45e154a2ee8b0f36,0x9077f2c785e84257,0x14d8bfb36426cbc5,0.306,0.322544,84304,0,PASS
+-432690581,surface-world,clang19-off,12,27,16,44640,0.000000,-140.000000,-1699.710938,0x3a23c958501ee719,0x45e154a2ee8b0f36,0x9077f2c785e84257,0x14d8bfb36426cbc5,0.459,0.485418,300580,0,PASS
+-432690581,surface-world,clang19-on,1,27,16,44640,0.000000,-140.000000,-1699.710938,0x3a23c958501ee719,0x45e154a2ee8b0f36,0x9077f2c785e84257,0x14d8bfb36426cbc5,0.306,0.321647,84076,0,PASS
+-432690581,surface-world,clang19-on,12,27,16,44640,0.000000,-140.000000,-1699.710938,0x3a23c958501ee719,0x45e154a2ee8b0f36,0x9077f2c785e84257,0x14d8bfb36426cbc5,0.474,0.502246,300440,0,PASS
+-432690581,surface-world,gcc14-default,1,27,16,44640,0.000000,-140.000000,-1699.710938,0x3a23c958501ee719,0x45e154a2ee8b0f36,0x9077f2c785e84257,0x14d8bfb36426cbc5,0.305,0.321094,85004,0,PASS
+-432690581,surface-world,gcc14-default,12,27,16,44640,0.000000,-140.000000,-1699.710938,0x3a23c958501ee719,0x45e154a2ee8b0f36,0x9077f2c785e84257,0x14d8bfb36426cbc5,0.479,0.507033,301668,0,PASS
+-432690581,floating-islands,clang19-off,1,27,7,20532,-39.199219,16.421875,-114.292969,0xd8b65942bf1c005c,0xe6557b8cadfb3356,0x446eeeb1e1fec3de,0x829b06ef76e4306d,1.352,1.368398,86148,0,PASS
+-432690581,floating-islands,clang19-off,12,27,7,20532,-39.199219,16.421875,-114.292969,0xd8b65942bf1c005c,0xe6557b8cadfb3356,0x446eeeb1e1fec3de,0x829b06ef76e4306d,0.661,0.690096,300352,0,PASS
+-432690581,floating-islands,clang19-on,1,27,7,20532,-39.199219,16.421875,-114.292969,0xd8b65942bf1c005c,0xe6557b8cadfb3356,0x446eeeb1e1fec3de,0x829b06ef76e4306d,1.354,1.371146,86172,0,PASS
+-432690581,floating-islands,clang19-on,12,27,7,20532,-39.199219,16.421875,-114.292969,0xd8b65942bf1c005c,0xe6557b8cadfb3356,0x446eeeb1e1fec3de,0x829b06ef76e4306d,0.657,0.685687,300432,0,PASS
+-432690581,floating-islands,gcc14-default,1,27,7,20532,-39.199219,16.421875,-114.292969,0xd8b65942bf1c005c,0xe6557b8cadfb3356,0x446eeeb1e1fec3de,0x829b06ef76e4306d,1.460,1.475496,86412,0,PASS
+-432690581,floating-islands,gcc14-default,12,27,7,20532,-39.199219,16.421875,-114.292969,0xd8b65942bf1c005c,0xe6557b8cadfb3356,0x446eeeb1e1fec3de,0x829b06ef76e4306d,0.665,0.692459,301076,0,PASS
+-380556572,surface-world,clang19-off,1,27,15,27832,0.000000,-140.000000,-2015.980469,0x54c47dd125294a9d,0x6e95e2a4fb185b89,0xdf1ac7f070338e53,0xe8b65412d19b0872,0.207,0.221590,85812,0,PASS
+-380556572,surface-world,clang19-off,12,27,15,27832,0.000000,-140.000000,-2015.980469,0x54c47dd125294a9d,0x6e95e2a4fb185b89,0xdf1ac7f070338e53,0xe8b65412d19b0872,0.437,0.466566,300296,0,PASS
+-380556572,surface-world,clang19-on,1,27,15,27832,0.000000,-140.000000,-2015.980469,0x54c47dd125294a9d,0x6e95e2a4fb185b89,0xdf1ac7f070338e53,0xe8b65412d19b0872,0.202,0.218609,85576,0,PASS
+-380556572,surface-world,clang19-on,12,27,15,27832,0.000000,-140.000000,-2015.980469,0x54c47dd125294a9d,0x6e95e2a4fb185b89,0xdf1ac7f070338e53,0xe8b65412d19b0872,0.440,0.468031,300284,0,PASS
+-380556572,surface-world,gcc14-default,1,27,15,27832,0.000000,-140.000000,-2015.980469,0x54c47dd125294a9d,0x6e95e2a4fb185b89,0xdf1ac7f070338e53,0xe8b65412d19b0872,0.190,0.205873,86136,0,PASS
+-380556572,surface-world,gcc14-default,12,27,15,27832,0.000000,-140.000000,-2015.980469,0x54c47dd125294a9d,0x6e95e2a4fb185b89,0xdf1ac7f070338e53,0xe8b65412d19b0872,0.432,0.460376,300688,0,PASS
+-380556572,floating-islands,clang19-off,1,27,10,25334,39.199219,17.386719,-117.285156,0x118f50002e1af1b1,0x57d82fed86d7545c,0xe6196a35a7e64fb8,0x094fe80cdf7fda78,0.839,0.855823,86260,0,PASS
+-380556572,floating-islands,clang19-off,12,27,10,25334,39.199219,17.386719,-117.285156,0x118f50002e1af1b1,0x57d82fed86d7545c,0xe6196a35a7e64fb8,0x094fe80cdf7fda78,0.572,0.600560,301428,0,PASS
+-380556572,floating-islands,clang19-on,1,27,10,25334,39.199219,17.386719,-117.285156,0x118f50002e1af1b1,0x57d82fed86d7545c,0xe6196a35a7e64fb8,0x094fe80cdf7fda78,0.875,0.890833,86184,0,PASS
+-380556572,floating-islands,clang19-on,12,27,10,25334,39.199219,17.386719,-117.285156,0x118f50002e1af1b1,0x57d82fed86d7545c,0xe6196a35a7e64fb8,0x094fe80cdf7fda78,0.551,0.578834,300960,0,PASS
+-380556572,floating-islands,gcc14-default,1,27,10,25334,39.199219,17.386719,-117.285156,0x118f50002e1af1b1,0x57d82fed86d7545c,0xe6196a35a7e64fb8,0x094fe80cdf7fda78,0.916,0.932667,86836,0,PASS
+-380556572,floating-islands,gcc14-default,12,27,10,25334,39.199219,17.386719,-117.285156,0x118f50002e1af1b1,0x57d82fed86d7545c,0xe6196a35a7e64fb8,0x094fe80cdf7fda78,0.606,0.635544,301708,0,PASS
+-238925630,surface-world,clang19-off,1,27,9,26908,0.000000,-140.000000,-2021.289062,0x01debb25b2642a4d,0xd316a4d6bbbdceee,0xba64591c42277c82,0x80e23990f3cb20b9,0.163,0.178003,84112,0,PASS
+-238925630,surface-world,clang19-off,12,27,9,26908,0.000000,-140.000000,-2021.289062,0x01debb25b2642a4d,0xd316a4d6bbbdceee,0xba64591c42277c82,0x80e23990f3cb20b9,0.405,0.433901,294484,0,PASS
+-238925630,surface-world,clang19-on,1,27,9,26908,0.000000,-140.000000,-2021.289062,0x01debb25b2642a4d,0xd316a4d6bbbdceee,0xba64591c42277c82,0x80e23990f3cb20b9,0.155,0.170979,84116,0,PASS
+-238925630,surface-world,clang19-on,12,27,9,26908,0.000000,-140.000000,-2021.289062,0x01debb25b2642a4d,0xd316a4d6bbbdceee,0xba64591c42277c82,0x80e23990f3cb20b9,0.424,0.450283,294552,0,PASS
+-238925630,surface-world,gcc14-default,1,27,9,26908,0.000000,-140.000000,-2021.289062,0x01debb25b2642a4d,0xd316a4d6bbbdceee,0xba64591c42277c82,0x80e23990f3cb20b9,0.157,0.173793,84632,0,PASS
+-238925630,surface-world,gcc14-default,12,27,9,26908,0.000000,-140.000000,-2021.289062,0x01debb25b2642a4d,0xd316a4d6bbbdceee,0xba64591c42277c82,0x80e23990f3cb20b9,0.418,0.444259,295140,0,PASS
+-238925630,floating-islands,clang19-off,1,27,10,20680,-39.199219,16.394531,-123.812500,0x36a07bf8d4383533,0x12f59de7f06e5270,0x327832e51af1db70,0xff0a971f18b6b590,2.096,2.113022,86240,0,PASS
+-238925630,floating-islands,clang19-off,12,27,10,20680,-39.199219,16.394531,-123.812500,0x36a07bf8d4383533,0x12f59de7f06e5270,0x327832e51af1db70,0xff0a971f18b6b590,0.812,0.839647,299904,0,PASS
+-238925630,floating-islands,clang19-on,1,27,10,20680,-39.199219,16.394531,-123.812500,0x36a07bf8d4383533,0x12f59de7f06e5270,0x327832e51af1db70,0xff0a971f18b6b590,2.107,2.123614,86584,0,PASS
+-238925630,floating-islands,clang19-on,12,27,10,20680,-39.199219,16.394531,-123.812500,0x36a07bf8d4383533,0x12f59de7f06e5270,0x327832e51af1db70,0xff0a971f18b6b590,0.795,0.823151,299740,0,PASS
+-238925630,floating-islands,gcc14-default,1,27,10,20680,-39.199219,16.394531,-123.812500,0x36a07bf8d4383533,0x12f59de7f06e5270,0x327832e51af1db70,0xff0a971f18b6b590,2.122,2.139698,87080,0,PASS
+-238925630,floating-islands,gcc14-default,12,27,10,20680,-39.199219,16.394531,-123.812500,0x36a07bf8d4383533,0x12f59de7f06e5270,0x327832e51af1db70,0xff0a971f18b6b590,0.807,0.834762,300372,0,PASS
+-216679974,surface-world,clang19-off,1,27,9,26538,0.000000,-140.000000,-2025.835938,0x04339f7c537f8920,0xb6d8dab4a5cd82ca,0x5bdc85d7f66eed92,0xac3b586f9be3e44e,0.168,0.185930,86460,0,PASS
+-216679974,surface-world,clang19-off,12,27,9,26538,0.000000,-140.000000,-2025.835938,0x04339f7c537f8920,0xb6d8dab4a5cd82ca,0x5bdc85d7f66eed92,0xac3b586f9be3e44e,0.408,0.433793,296948,0,PASS
+-216679974,surface-world,clang19-on,1,27,9,26538,0.000000,-140.000000,-2025.835938,0x04339f7c537f8920,0xb6d8dab4a5cd82ca,0x5bdc85d7f66eed92,0xac3b586f9be3e44e,0.160,0.176766,86712,0,PASS
+-216679974,surface-world,clang19-on,12,27,9,26538,0.000000,-140.000000,-2025.835938,0x04339f7c537f8920,0xb6d8dab4a5cd82ca,0x5bdc85d7f66eed92,0xac3b586f9be3e44e,0.426,0.453535,296576,0,PASS
+-216679974,surface-world,gcc14-default,1,27,9,26538,0.000000,-140.000000,-2025.835938,0x04339f7c537f8920,0xb6d8dab4a5cd82ca,0x5bdc85d7f66eed92,0xac3b586f9be3e44e,0.156,0.172641,87192,0,PASS
+-216679974,surface-world,gcc14-default,12,27,9,26538,0.000000,-140.000000,-2025.835938,0x04339f7c537f8920,0xb6d8dab4a5cd82ca,0x5bdc85d7f66eed92,0xac3b586f9be3e44e,0.431,0.459265,297424,0,PASS
+-216679974,floating-islands,clang19-off,1,27,9,25284,39.199219,20.230469,-108.953125,0x79bb86763243b67e,0x7fd748d3021d506d,0x83442fd7561cbb4e,0x5a36191d75130d85,1.202,1.219265,88692,0,PASS
+-216679974,floating-islands,clang19-off,12,27,9,25284,39.199219,20.230469,-108.953125,0x79bb86763243b67e,0x7fd748d3021d506d,0x83442fd7561cbb4e,0x5a36191d75130d85,0.652,0.679940,303236,0,PASS
+-216679974,floating-islands,clang19-on,1,27,9,25284,39.199219,20.230469,-108.953125,0x79bb86763243b67e,0x7fd748d3021d506d,0x83442fd7561cbb4e,0x5a36191d75130d85,1.221,1.237304,88612,0,PASS
+-216679974,floating-islands,clang19-on,12,27,9,25284,39.199219,20.230469,-108.953125,0x79bb86763243b67e,0x7fd748d3021d506d,0x83442fd7561cbb4e,0x5a36191d75130d85,0.613,0.640836,303412,0,PASS
+-216679974,floating-islands,gcc14-default,1,27,9,25284,39.199219,20.230469,-108.953125,0x79bb86763243b67e,0x7fd748d3021d506d,0x83442fd7561cbb4e,0x5a36191d75130d85,1.322,1.339480,89104,0,PASS
+-216679974,floating-islands,gcc14-default,12,27,9,25284,39.199219,20.230469,-108.953125,0x79bb86763243b67e,0x7fd748d3021d506d,0x83442fd7561cbb4e,0x5a36191d75130d85,0.655,0.683872,303612,0,PASS
+-133096164,surface-world,clang19-off,1,27,9,26182,0.000000,-140.000000,-2023.140625,0x1dadb5c6440181c0,0x4681d673371781ba,0x7b8f2bafde1628a9,0xf8f07e5a6d4f38f9,0.169,0.184384,85324,0,PASS
+-133096164,surface-world,clang19-off,12,27,9,26182,0.000000,-140.000000,-2023.140625,0x1dadb5c6440181c0,0x4681d673371781ba,0x7b8f2bafde1628a9,0xf8f07e5a6d4f38f9,0.417,0.443885,295568,0,PASS
+-133096164,surface-world,clang19-on,1,27,9,26182,0.000000,-140.000000,-2023.140625,0x1dadb5c6440181c0,0x4681d673371781ba,0x7b8f2bafde1628a9,0xf8f07e5a6d4f38f9,0.170,0.186315,85648,0,PASS
+-133096164,surface-world,clang19-on,12,27,9,26182,0.000000,-140.000000,-2023.140625,0x1dadb5c6440181c0,0x4681d673371781ba,0x7b8f2bafde1628a9,0xf8f07e5a6d4f38f9,0.429,0.457985,295652,0,PASS
+-133096164,surface-world,gcc14-default,1,27,9,26182,0.000000,-140.000000,-2023.140625,0x1dadb5c6440181c0,0x4681d673371781ba,0x7b8f2bafde1628a9,0xf8f07e5a6d4f38f9,0.162,0.178058,86036,0,PASS
+-133096164,surface-world,gcc14-default,12,27,9,26182,0.000000,-140.000000,-2023.140625,0x1dadb5c6440181c0,0x4681d673371781ba,0x7b8f2bafde1628a9,0xf8f07e5a6d4f38f9,0.424,0.454505,296144,0,PASS
+-133096164,floating-islands,clang19-off,1,27,11,26248,-39.199219,16.050781,-118.000000,0xad7be7cd6b0dbffc,0x06d2caf87f019f22,0xbede324e7af07e61,0xf2eff51f24bf458a,0.872,0.891001,85524,0,PASS
+-133096164,floating-islands,clang19-off,12,27,11,26248,-39.199219,16.050781,-118.000000,0xad7be7cd6b0dbffc,0x06d2caf87f019f22,0xbede324e7af07e61,0xf2eff51f24bf458a,0.563,0.589920,300908,0,PASS
+-133096164,floating-islands,clang19-on,1,27,11,26248,-39.199219,16.050781,-118.000000,0xad7be7cd6b0dbffc,0x06d2caf87f019f22,0xbede324e7af07e61,0xf2eff51f24bf458a,0.877,0.892147,85604,0,PASS
+-133096164,floating-islands,clang19-on,12,27,11,26248,-39.199219,16.050781,-118.000000,0xad7be7cd6b0dbffc,0x06d2caf87f019f22,0xbede324e7af07e61,0xf2eff51f24bf458a,0.561,0.587310,300416,0,PASS
+-133096164,floating-islands,gcc14-default,1,27,11,26248,-39.199219,16.050781,-118.000000,0xad7be7cd6b0dbffc,0x06d2caf87f019f22,0xbede324e7af07e61,0xf2eff51f24bf458a,0.936,0.951685,86128,0,PASS
+-133096164,floating-islands,gcc14-default,12,27,11,26248,-39.199219,16.050781,-118.000000,0xad7be7cd6b0dbffc,0x06d2caf87f019f22,0xbede324e7af07e61,0xf2eff51f24bf458a,0.581,0.608952,301120,0,PASS
+-112366806,surface-world,clang19-off,1,27,16,46567,0.000000,-140.000000,-1699.476562,0x7aafaa55fce58f77,0x84c7d73393ccdb09,0x46a53de4a9e7617c,0xc79fcc56dd0181c2,0.324,0.340848,85804,0,PASS
+-112366806,surface-world,clang19-off,12,27,16,46567,0.000000,-140.000000,-1699.476562,0x7aafaa55fce58f77,0x84c7d73393ccdb09,0x46a53de4a9e7617c,0xc79fcc56dd0181c2,0.487,0.514033,302296,0,PASS
+-112366806,surface-world,clang19-on,1,27,16,46567,0.000000,-140.000000,-1699.476562,0x7aafaa55fce58f77,0x84c7d73393ccdb09,0x46a53de4a9e7617c,0xc79fcc56dd0181c2,0.326,0.343022,85380,0,PASS
+-112366806,surface-world,clang19-on,12,27,16,46567,0.000000,-140.000000,-1699.476562,0x7aafaa55fce58f77,0x84c7d73393ccdb09,0x46a53de4a9e7617c,0xc79fcc56dd0181c2,0.482,0.509381,302920,0,PASS
+-112366806,surface-world,gcc14-default,1,27,16,46567,0.000000,-140.000000,-1699.476562,0x7aafaa55fce58f77,0x84c7d73393ccdb09,0x46a53de4a9e7617c,0xc79fcc56dd0181c2,0.308,0.323509,86516,0,PASS
+-112366806,surface-world,gcc14-default,12,27,16,46567,0.000000,-140.000000,-1699.476562,0x7aafaa55fce58f77,0x84c7d73393ccdb09,0x46a53de4a9e7617c,0xc79fcc56dd0181c2,0.480,0.507907,301052,0,PASS
+-112366806,floating-islands,clang19-off,1,27,9,21148,39.199219,16.867188,-114.605469,0xda065c33dc944d23,0x3c27d1ee8688fec9,0xa497259af00952cf,0x8697ac7f0567f069,1.266,1.282382,85796,0,PASS
+-112366806,floating-islands,clang19-off,12,27,9,21148,39.199219,16.867188,-114.605469,0xda065c33dc944d23,0x3c27d1ee8688fec9,0xa497259af00952cf,0x8697ac7f0567f069,0.681,0.717905,299852,0,PASS
+-112366806,floating-islands,clang19-on,1,27,9,21148,39.199219,16.867188,-114.605469,0xda065c33dc944d23,0x3c27d1ee8688fec9,0xa497259af00952cf,0x8697ac7f0567f069,1.340,1.364175,85696,0,PASS
+-112366806,floating-islands,clang19-on,12,27,9,21148,39.199219,16.867188,-114.605469,0xda065c33dc944d23,0x3c27d1ee8688fec9,0xa497259af00952cf,0x8697ac7f0567f069,0.705,0.732861,299840,0,PASS
+-112366806,floating-islands,gcc14-default,1,27,9,21148,39.199219,16.867188,-114.605469,0xda065c33dc944d23,0x3c27d1ee8688fec9,0xa497259af00952cf,0x8697ac7f0567f069,1.379,1.395616,86172,0,PASS
+-112366806,floating-islands,gcc14-default,12,27,9,21148,39.199219,16.867188,-114.605469,0xda065c33dc944d23,0x3c27d1ee8688fec9,0xa497259af00952cf,0x8697ac7f0567f069,0.744,0.770938,300416,0,PASS
+0,surface-world,clang19-off,1,27,9,27910,0.000000,-140.000000,-2003.089844,0x2339a02328c5ffa6,0x83d31e15bf9161b0,0xc056f0c0987d79b6,0x435c44ce6ca8e4ea,0.180,0.198233,86824,0,PASS
+0,surface-world,clang19-off,12,27,9,27910,0.000000,-140.000000,-2003.089844,0x2339a02328c5ffa6,0x83d31e15bf9161b0,0xc056f0c0987d79b6,0x435c44ce6ca8e4ea,0.422,0.449664,297060,0,PASS
+0,surface-world,clang19-on,1,27,9,27910,0.000000,-140.000000,-2003.089844,0x2339a02328c5ffa6,0x83d31e15bf9161b0,0xc056f0c0987d79b6,0x435c44ce6ca8e4ea,0.173,0.188744,86728,0,PASS
+0,surface-world,clang19-on,12,27,9,27910,0.000000,-140.000000,-2003.089844,0x2339a02328c5ffa6,0x83d31e15bf9161b0,0xc056f0c0987d79b6,0x435c44ce6ca8e4ea,0.450,0.477889,296820,0,PASS
+0,surface-world,gcc14-default,1,27,9,27910,0.000000,-140.000000,-2003.089844,0x2339a02328c5ffa6,0x83d31e15bf9161b0,0xc056f0c0987d79b6,0x435c44ce6ca8e4ea,0.165,0.181852,87064,0,PASS
+0,surface-world,gcc14-default,12,27,9,27910,0.000000,-140.000000,-2003.089844,0x2339a02328c5ffa6,0x83d31e15bf9161b0,0xc056f0c0987d79b6,0x435c44ce6ca8e4ea,0.435,0.462262,297640,0,PASS
+0,floating-islands,clang19-off,1,27,9,20740,-25.199219,-76.226562,-105.089844,0x7fd1e3389642e6f6,0x577e52a5ba8d96be,0x7c6ffe9f5bbbb450,0xb4d308de116f4657,1.761,1.778352,86204,0,PASS
+0,floating-islands,clang19-off,12,27,9,20740,-25.199219,-76.226562,-105.089844,0x7fd1e3389642e6f6,0x577e52a5ba8d96be,0x7c6ffe9f5bbbb450,0xb4d308de116f4657,0.768,0.794881,299068,0,PASS
+0,floating-islands,clang19-on,1,27,9,20740,-25.199219,-76.226562,-105.089844,0x7fd1e3389642e6f6,0x577e52a5ba8d96be,0x7c6ffe9f5bbbb450,0xb4d308de116f4657,1.765,1.781702,86056,0,PASS
+0,floating-islands,clang19-on,12,27,9,20740,-25.199219,-76.226562,-105.089844,0x7fd1e3389642e6f6,0x577e52a5ba8d96be,0x7c6ffe9f5bbbb450,0xb4d308de116f4657,0.765,0.792583,298772,0,PASS
+0,floating-islands,gcc14-default,1,27,9,20740,-25.199219,-76.226562,-105.089844,0x7fd1e3389642e6f6,0x577e52a5ba8d96be,0x7c6ffe9f5bbbb450,0xb4d308de116f4657,1.894,1.910737,86536,0,PASS
+0,floating-islands,gcc14-default,12,27,9,20740,-25.199219,-76.226562,-105.089844,0x7fd1e3389642e6f6,0x577e52a5ba8d96be,0x7c6ffe9f5bbbb450,0xb4d308de116f4657,0.802,0.828791,299460,0,PASS
+5808593,surface-world,clang19-off,1,27,14,29050,0.000000,-140.000000,-2014.406250,0x355972d90ab29593,0x563daf944391ab7c,0x8804eebac2acd898,0xc2b049b4f6426af0,0.209,0.225170,84472,0,PASS
+5808593,surface-world,clang19-off,12,27,14,29050,0.000000,-140.000000,-2014.406250,0x355972d90ab29593,0x563daf944391ab7c,0x8804eebac2acd898,0xc2b049b4f6426af0,0.440,0.467263,299048,0,PASS
+5808593,surface-world,clang19-on,1,27,14,29050,0.000000,-140.000000,-2014.406250,0x355972d90ab29593,0x563daf944391ab7c,0x8804eebac2acd898,0xc2b049b4f6426af0,0.214,0.230107,84720,0,PASS
+5808593,surface-world,clang19-on,12,27,14,29050,0.000000,-140.000000,-2014.406250,0x355972d90ab29593,0x563daf944391ab7c,0x8804eebac2acd898,0xc2b049b4f6426af0,0.450,0.477642,299356,0,PASS
+5808593,surface-world,gcc14-default,1,27,14,29050,0.000000,-140.000000,-2014.406250,0x355972d90ab29593,0x563daf944391ab7c,0x8804eebac2acd898,0xc2b049b4f6426af0,0.206,0.223073,85136,0,PASS
+5808593,surface-world,gcc14-default,12,27,14,29050,0.000000,-140.000000,-2014.406250,0x355972d90ab29593,0x563daf944391ab7c,0x8804eebac2acd898,0xc2b049b4f6426af0,0.441,0.468922,299624,0,PASS
+5808593,floating-islands,clang19-off,1,27,10,21000,39.199219,16.003906,-114.574219,0xb96bffb27bc457e0,0x1f867a2add682123,0xfd4c94fd6f9b5863,0x82dc1a7add5ea530,0.978,0.993595,85604,0,PASS
+5808593,floating-islands,clang19-off,12,27,10,21000,39.199219,16.003906,-114.574219,0xb96bffb27bc457e0,0x1f867a2add682123,0xfd4c94fd6f9b5863,0x82dc1a7add5ea530,0.587,0.614676,299336,0,PASS
+5808593,floating-islands,clang19-on,1,27,10,21000,39.199219,16.003906,-114.574219,0xb96bffb27bc457e0,0x1f867a2add682123,0xfd4c94fd6f9b5863,0x82dc1a7add5ea530,0.972,0.987363,85032,0,PASS
+5808593,floating-islands,clang19-on,12,27,10,21000,39.199219,16.003906,-114.574219,0xb96bffb27bc457e0,0x1f867a2add682123,0xfd4c94fd6f9b5863,0x82dc1a7add5ea530,0.607,0.635950,299516,0,PASS
+5808593,floating-islands,gcc14-default,1,27,10,21000,39.199219,16.003906,-114.574219,0xb96bffb27bc457e0,0x1f867a2add682123,0xfd4c94fd6f9b5863,0x82dc1a7add5ea530,1.060,1.076946,85540,0,PASS
+5808593,floating-islands,gcc14-default,12,27,10,21000,39.199219,16.003906,-114.574219,0xb96bffb27bc457e0,0x1f867a2add682123,0xfd4c94fd6f9b5863,0x82dc1a7add5ea530,0.631,0.659995,299816,0,PASS
+28573228,surface-world,clang19-off,1,27,13,27054,0.000000,-140.000000,-2016.695312,0x57cb2fe09976dc54,0x35ac4f38b432e8b7,0x7ed7b8d28bbb4ae8,0xe9bf4ba938198d73,0.183,0.198431,84548,0,PASS
+28573228,surface-world,clang19-off,12,27,13,27054,0.000000,-140.000000,-2016.695312,0x57cb2fe09976dc54,0x35ac4f38b432e8b7,0x7ed7b8d28bbb4ae8,0xe9bf4ba938198d73,0.413,0.440062,299560,0,PASS
+28573228,surface-world,clang19-on,1,27,13,27054,0.000000,-140.000000,-2016.695312,0x57cb2fe09976dc54,0x35ac4f38b432e8b7,0x7ed7b8d28bbb4ae8,0xe9bf4ba938198d73,0.188,0.203450,84968,0,PASS
+28573228,surface-world,clang19-on,12,27,13,27054,0.000000,-140.000000,-2016.695312,0x57cb2fe09976dc54,0x35ac4f38b432e8b7,0x7ed7b8d28bbb4ae8,0xe9bf4ba938198d73,0.409,0.435356,299552,0,PASS
+28573228,surface-world,gcc14-default,1,27,13,27054,0.000000,-140.000000,-2016.695312,0x57cb2fe09976dc54,0x35ac4f38b432e8b7,0x7ed7b8d28bbb4ae8,0xe9bf4ba938198d73,0.185,0.200823,85508,0,PASS
+28573228,surface-world,gcc14-default,12,27,13,27054,0.000000,-140.000000,-2016.695312,0x57cb2fe09976dc54,0x35ac4f38b432e8b7,0x7ed7b8d28bbb4ae8,0xe9bf4ba938198d73,0.420,0.448033,299724,0,PASS
+28573228,floating-islands,clang19-off,1,27,12,32456,0.000000,-18.683594,-116.187500,0x25ed5f499f9bf7ab,0x1c8e67c20374b473,0x786447fa7fb09cab,0x244fb7a45dc74437,1.396,1.413299,85492,0,PASS
+28573228,floating-islands,clang19-off,12,27,12,32456,0.000000,-18.683594,-116.187500,0x25ed5f499f9bf7ab,0x1c8e67c20374b473,0x786447fa7fb09cab,0x244fb7a45dc74437,0.693,0.719023,300784,0,PASS
+28573228,floating-islands,clang19-on,1,27,12,32456,0.000000,-18.683594,-116.187500,0x25ed5f499f9bf7ab,0x1c8e67c20374b473,0x786447fa7fb09cab,0x244fb7a45dc74437,1.354,1.373140,84808,0,PASS
+28573228,floating-islands,clang19-on,12,27,12,32456,0.000000,-18.683594,-116.187500,0x25ed5f499f9bf7ab,0x1c8e67c20374b473,0x786447fa7fb09cab,0x244fb7a45dc74437,0.663,0.689391,300568,0,PASS
+28573228,floating-islands,gcc14-default,1,27,12,32456,0.000000,-18.683594,-116.187500,0x25ed5f499f9bf7ab,0x1c8e67c20374b473,0x786447fa7fb09cab,0x244fb7a45dc74437,1.544,1.560291,85548,0,PASS
+28573228,floating-islands,gcc14-default,12,27,12,32456,0.000000,-18.683594,-116.187500,0x25ed5f499f9bf7ab,0x1c8e67c20374b473,0x786447fa7fb09cab,0x244fb7a45dc74437,0.727,0.755835,300920,0,PASS
+70955227,surface-world,clang19-off,1,27,13,29926,0.000000,-140.000000,-2047.484375,0xb205ad43941e41d8,0x722e775c7e0735bc,0x44a33dfc23ec62ed,0x39969012a7375b51,0.192,0.208106,85820,0,PASS
+70955227,surface-world,clang19-off,12,27,13,29926,0.000000,-140.000000,-2047.484375,0xb205ad43941e41d8,0x722e775c7e0735bc,0x44a33dfc23ec62ed,0x39969012a7375b51,0.448,0.476411,300752,0,PASS
+70955227,surface-world,clang19-on,1,27,13,29926,0.000000,-140.000000,-2047.484375,0xb205ad43941e41d8,0x722e775c7e0735bc,0x44a33dfc23ec62ed,0x39969012a7375b51,0.185,0.201218,85544,0,PASS
+70955227,surface-world,clang19-on,12,27,13,29926,0.000000,-140.000000,-2047.484375,0xb205ad43941e41d8,0x722e775c7e0735bc,0x44a33dfc23ec62ed,0x39969012a7375b51,0.429,0.457766,300792,0,PASS
+70955227,surface-world,gcc14-default,1,27,13,29926,0.000000,-140.000000,-2047.484375,0xb205ad43941e41d8,0x722e775c7e0735bc,0x44a33dfc23ec62ed,0x39969012a7375b51,0.183,0.198664,86928,0,PASS
+70955227,surface-world,gcc14-default,12,27,13,29926,0.000000,-140.000000,-2047.484375,0xb205ad43941e41d8,0x722e775c7e0735bc,0x44a33dfc23ec62ed,0x39969012a7375b51,0.438,0.466791,301440,0,PASS
+70955227,floating-islands,clang19-off,1,27,12,17426,-39.199219,18.582031,-121.785156,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23,0x6f301aefdb37973f,0xa38a1c2ec1a3b2f1,1.586,1.602163,87224,0,PASS
+70955227,floating-islands,clang19-off,12,27,12,17426,-39.199219,18.582031,-121.785156,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23,0x6f301aefdb37973f,0xa38a1c2ec1a3b2f1,0.715,0.741331,300680,0,PASS
+70955227,floating-islands,clang19-on,1,27,12,17426,-39.199219,18.582031,-121.785156,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23,0x6f301aefdb37973f,0xa38a1c2ec1a3b2f1,1.601,1.615814,87288,0,PASS
+70955227,floating-islands,clang19-on,12,27,12,17426,-39.199219,18.582031,-121.785156,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23,0x6f301aefdb37973f,0xa38a1c2ec1a3b2f1,0.746,0.774349,301108,0,PASS
+70955227,floating-islands,gcc14-default,1,27,12,17426,-39.199219,18.582031,-121.785156,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23,0x6f301aefdb37973f,0xa38a1c2ec1a3b2f1,1.718,1.733886,87436,0,PASS
+70955227,floating-islands,gcc14-default,12,27,12,17426,-39.199219,18.582031,-121.785156,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23,0x6f301aefdb37973f,0xa38a1c2ec1a3b2f1,0.780,0.806995,301540,0,PASS
+75274690,surface-world,clang19-off,1,27,15,28342,0.000000,-140.000000,-2019.648438,0x84af4380d33164a6,0xa18d6de0f9267e9f,0xe4bcbdc97074b806,0x5d71387401f96959,0.189,0.204204,85448,0,PASS
+75274690,surface-world,clang19-off,12,27,15,28342,0.000000,-140.000000,-2019.648438,0x84af4380d33164a6,0xa18d6de0f9267e9f,0xe4bcbdc97074b806,0x5d71387401f96959,0.445,0.471446,300620,0,PASS
+75274690,surface-world,clang19-on,1,27,15,28342,0.000000,-140.000000,-2019.648438,0x84af4380d33164a6,0xa18d6de0f9267e9f,0xe4bcbdc97074b806,0x5d71387401f96959,0.184,0.200607,85196,0,PASS
+75274690,surface-world,clang19-on,12,27,15,28342,0.000000,-140.000000,-2019.648438,0x84af4380d33164a6,0xa18d6de0f9267e9f,0xe4bcbdc97074b806,0x5d71387401f96959,0.420,0.448852,300344,0,PASS
+75274690,surface-world,gcc14-default,1,27,15,28342,0.000000,-140.000000,-2019.648438,0x84af4380d33164a6,0xa18d6de0f9267e9f,0xe4bcbdc97074b806,0x5d71387401f96959,0.192,0.207839,85924,0,PASS
+75274690,surface-world,gcc14-default,12,27,15,28342,0.000000,-140.000000,-2019.648438,0x84af4380d33164a6,0xa18d6de0f9267e9f,0xe4bcbdc97074b806,0x5d71387401f96959,0.425,0.452205,300748,0,PASS
+75274690,floating-islands,clang19-off,1,27,8,19760,64.398438,72.199219,-121.019531,0x045c98172a573800,0x86618a983d61425d,0x13523110d2e6a9b3,0x6f1ad87b335e3d3e,1.103,1.118954,86812,0,PASS
+75274690,floating-islands,clang19-off,12,27,8,19760,64.398438,72.199219,-121.019531,0x045c98172a573800,0x86618a983d61425d,0x13523110d2e6a9b3,0x6f1ad87b335e3d3e,0.628,0.655461,300972,0,PASS
+75274690,floating-islands,clang19-on,1,27,8,19760,64.398438,72.199219,-121.019531,0x045c98172a573800,0x86618a983d61425d,0x13523110d2e6a9b3,0x6f1ad87b335e3d3e,1.083,1.101596,86924,0,PASS
+75274690,floating-islands,clang19-on,12,27,8,19760,64.398438,72.199219,-121.019531,0x045c98172a573800,0x86618a983d61425d,0x13523110d2e6a9b3,0x6f1ad87b335e3d3e,0.658,0.694786,300572,0,PASS
+75274690,floating-islands,gcc14-default,1,27,8,19760,64.398438,72.199219,-121.019531,0x045c98172a573800,0x86618a983d61425d,0x13523110d2e6a9b3,0x6f1ad87b335e3d3e,1.176,1.192130,87488,0,PASS
+75274690,floating-islands,gcc14-default,12,27,8,19760,64.398438,72.199219,-121.019531,0x045c98172a573800,0x86618a983d61425d,0x13523110d2e6a9b3,0x6f1ad87b335e3d3e,0.653,0.680432,301468,0,PASS
+81375760,surface-world,clang19-off,1,27,18,48305,0.000000,-140.000000,-1894.296875,0x20c34733457b090d,0x9a6b57b63637db1f,0x2005693f7f6d7dcc,0xc5745d7ea096cff0,0.333,0.349470,85188,0,PASS
+81375760,surface-world,clang19-off,12,27,18,48305,0.000000,-140.000000,-1894.296875,0x20c34733457b090d,0x9a6b57b63637db1f,0x2005693f7f6d7dcc,0xc5745d7ea096cff0,0.480,0.508631,302276,0,PASS
+81375760,surface-world,clang19-on,1,27,18,48305,0.000000,-140.000000,-1894.296875,0x20c34733457b090d,0x9a6b57b63637db1f,0x2005693f7f6d7dcc,0xc5745d7ea096cff0,0.331,0.348279,85148,0,PASS
+81375760,surface-world,clang19-on,12,27,18,48305,0.000000,-140.000000,-1894.296875,0x20c34733457b090d,0x9a6b57b63637db1f,0x2005693f7f6d7dcc,0xc5745d7ea096cff0,0.506,0.532790,302092,0,PASS
+81375760,surface-world,gcc14-default,1,27,18,48305,0.000000,-140.000000,-1894.296875,0x20c34733457b090d,0x9a6b57b63637db1f,0x2005693f7f6d7dcc,0xc5745d7ea096cff0,0.340,0.357917,85568,0,PASS
+81375760,surface-world,gcc14-default,12,27,18,48305,0.000000,-140.000000,-1894.296875,0x20c34733457b090d,0x9a6b57b63637db1f,0x2005693f7f6d7dcc,0xc5745d7ea096cff0,0.476,0.502072,302172,0,PASS
+81375760,floating-islands,clang19-off,1,27,12,24146,-39.199219,20.589844,-119.359375,0x69b66261833e4676,0x75e6b0f427e7698a,0xcb222176f7352da7,0x20224eb0a8925b4d,1.592,1.607202,87600,0,PASS
+81375760,floating-islands,clang19-off,12,27,12,24146,-39.199219,20.589844,-119.359375,0x69b66261833e4676,0x75e6b0f427e7698a,0xcb222176f7352da7,0x20224eb0a8925b4d,0.729,0.756249,301856,0,PASS
+81375760,floating-islands,clang19-on,1,27,12,24146,-39.199219,20.589844,-119.359375,0x69b66261833e4676,0x75e6b0f427e7698a,0xcb222176f7352da7,0x20224eb0a8925b4d,1.678,1.694265,87328,0,PASS
+81375760,floating-islands,clang19-on,12,27,12,24146,-39.199219,20.589844,-119.359375,0x69b66261833e4676,0x75e6b0f427e7698a,0xcb222176f7352da7,0x20224eb0a8925b4d,0.746,0.773941,302184,0,PASS
+81375760,floating-islands,gcc14-default,1,27,12,24146,-39.199219,20.589844,-119.359375,0x69b66261833e4676,0x75e6b0f427e7698a,0xcb222176f7352da7,0x20224eb0a8925b4d,1.706,1.723259,87980,0,PASS
+81375760,floating-islands,gcc14-default,12,27,12,24146,-39.199219,20.589844,-119.359375,0x69b66261833e4676,0x75e6b0f427e7698a,0xcb222176f7352da7,0x20224eb0a8925b4d,0.743,0.770492,302508,0,PASS
+146979566,surface-world,clang19-off,1,27,14,31096,0.000000,-140.000000,-2014.601562,0x2d27daeb8c1c8b7c,0x2218ed732f71ca53,0x6f23c17789836934,0x5063630f2a948856,0.242,0.259669,85944,0,PASS
+146979566,surface-world,clang19-off,12,27,14,31096,0.000000,-140.000000,-2014.601562,0x2d27daeb8c1c8b7c,0x2218ed732f71ca53,0x6f23c17789836934,0x5063630f2a948856,0.431,0.458617,301156,0,PASS
+146979566,surface-world,clang19-on,1,27,14,31096,0.000000,-140.000000,-2014.601562,0x2d27daeb8c1c8b7c,0x2218ed732f71ca53,0x6f23c17789836934,0x5063630f2a948856,0.237,0.254081,85952,0,PASS
+146979566,surface-world,clang19-on,12,27,14,31096,0.000000,-140.000000,-2014.601562,0x2d27daeb8c1c8b7c,0x2218ed732f71ca53,0x6f23c17789836934,0x5063630f2a948856,0.428,0.456566,301360,0,PASS
+146979566,surface-world,gcc14-default,1,27,14,31096,0.000000,-140.000000,-2014.601562,0x2d27daeb8c1c8b7c,0x2218ed732f71ca53,0x6f23c17789836934,0x5063630f2a948856,0.245,0.261764,86436,0,PASS
+146979566,surface-world,gcc14-default,12,27,14,31096,0.000000,-140.000000,-2014.601562,0x2d27daeb8c1c8b7c,0x2218ed732f71ca53,0x6f23c17789836934,0x5063630f2a948856,0.453,0.480241,301596,0,PASS
+146979566,floating-islands,clang19-off,1,27,9,22370,39.199219,16.625000,-109.785156,0x93d0d67042bb05d2,0xe7f4981f907e316e,0x98081f3cf86e0b7f,0xa103fc9366460065,1.584,1.600638,87472,0,PASS
+146979566,floating-islands,clang19-off,12,27,9,22370,39.199219,16.625000,-109.785156,0x93d0d67042bb05d2,0xe7f4981f907e316e,0x98081f3cf86e0b7f,0xa103fc9366460065,0.691,0.717956,301644,0,PASS
+146979566,floating-islands,clang19-on,1,27,9,22370,39.199219,16.625000,-109.785156,0x93d0d67042bb05d2,0xe7f4981f907e316e,0x98081f3cf86e0b7f,0xa103fc9366460065,1.645,1.662341,87336,0,PASS
+146979566,floating-islands,clang19-on,12,27,9,22370,39.199219,16.625000,-109.785156,0x93d0d67042bb05d2,0xe7f4981f907e316e,0x98081f3cf86e0b7f,0xa103fc9366460065,0.716,0.744086,301388,0,PASS
+146979566,floating-islands,gcc14-default,1,27,9,22370,39.199219,16.625000,-109.785156,0x93d0d67042bb05d2,0xe7f4981f907e316e,0x98081f3cf86e0b7f,0xa103fc9366460065,1.743,1.760680,87812,0,PASS
+146979566,floating-islands,gcc14-default,12,27,9,22370,39.199219,16.625000,-109.785156,0x93d0d67042bb05d2,0xe7f4981f907e316e,0x98081f3cf86e0b7f,0xa103fc9366460065,0.726,0.752868,302004,0,PASS
+244951180,surface-world,clang19-off,1,27,18,52468,0.000000,-140.000000,-1798.816406,0xfb0ba5f3b28b306d,0x2d5f650a41b8b2bd,0xcc6273def955b692,0x477e01281747a9c6,0.348,0.365147,87736,0,PASS
+244951180,surface-world,clang19-off,12,27,18,52468,0.000000,-140.000000,-1798.816406,0xfb0ba5f3b28b306d,0x2d5f650a41b8b2bd,0xcc6273def955b692,0x477e01281747a9c6,0.475,0.502857,304536,0,PASS
+244951180,surface-world,clang19-on,1,27,18,52468,0.000000,-140.000000,-1798.816406,0xfb0ba5f3b28b306d,0x2d5f650a41b8b2bd,0xcc6273def955b692,0x477e01281747a9c6,0.345,0.361096,87652,0,PASS
+244951180,surface-world,clang19-on,12,27,18,52468,0.000000,-140.000000,-1798.816406,0xfb0ba5f3b28b306d,0x2d5f650a41b8b2bd,0xcc6273def955b692,0x477e01281747a9c6,0.462,0.489379,305156,0,PASS
+244951180,surface-world,gcc14-default,1,27,18,52468,0.000000,-140.000000,-1798.816406,0xfb0ba5f3b28b306d,0x2d5f650a41b8b2bd,0xcc6273def955b692,0x477e01281747a9c6,0.319,0.334168,87880,0,PASS
+244951180,surface-world,gcc14-default,12,27,18,52468,0.000000,-140.000000,-1798.816406,0xfb0ba5f3b28b306d,0x2d5f650a41b8b2bd,0xcc6273def955b692,0x477e01281747a9c6,0.468,0.496037,305128,0,PASS
+244951180,floating-islands,clang19-off,1,27,13,32272,0.000000,-18.179688,-116.664062,0x0b22965681c5b482,0x582ef8c1d263bedb,0x00179a81f23dbeee,0x5ea7d2a08ba7a249,1.132,1.147425,87072,0,PASS
+244951180,floating-islands,clang19-off,12,27,13,32272,0.000000,-18.179688,-116.664062,0x0b22965681c5b482,0x582ef8c1d263bedb,0x00179a81f23dbeee,0x5ea7d2a08ba7a249,0.586,0.615574,303052,0,PASS
+244951180,floating-islands,clang19-on,1,27,13,32272,0.000000,-18.179688,-116.664062,0x0b22965681c5b482,0x582ef8c1d263bedb,0x00179a81f23dbeee,0x5ea7d2a08ba7a249,1.099,1.116192,87252,0,PASS
+244951180,floating-islands,clang19-on,12,27,13,32272,0.000000,-18.179688,-116.664062,0x0b22965681c5b482,0x582ef8c1d263bedb,0x00179a81f23dbeee,0x5ea7d2a08ba7a249,0.588,0.615818,303076,0,PASS
+244951180,floating-islands,gcc14-default,1,27,13,32272,0.000000,-18.179688,-116.664062,0x0b22965681c5b482,0x582ef8c1d263bedb,0x00179a81f23dbeee,0x5ea7d2a08ba7a249,1.201,1.217254,87804,0,PASS
+244951180,floating-islands,gcc14-default,12,27,13,32272,0.000000,-18.179688,-116.664062,0x0b22965681c5b482,0x582ef8c1d263bedb,0x00179a81f23dbeee,0x5ea7d2a08ba7a249,0.615,0.643461,303388,0,PASS
+245433414,surface-world,clang19-off,1,27,14,32860,0.000000,-140.000000,-2022.468750,0xcc51a567f61f812d,0xc59dc3105dd493b2,0x03b8f1a7d0eac0d7,0x22f468a7d1585605,0.183,0.199554,84260,0,PASS
+245433414,surface-world,clang19-off,12,27,14,32860,0.000000,-140.000000,-2022.468750,0xcc51a567f61f812d,0xc59dc3105dd493b2,0x03b8f1a7d0eac0d7,0x22f468a7d1585605,0.528,0.554834,299804,0,PASS
+245433414,surface-world,clang19-on,1,27,14,32860,0.000000,-140.000000,-2022.468750,0xcc51a567f61f812d,0xc59dc3105dd493b2,0x03b8f1a7d0eac0d7,0x22f468a7d1585605,0.190,0.205364,84668,0,PASS
+245433414,surface-world,clang19-on,12,27,14,32860,0.000000,-140.000000,-2022.468750,0xcc51a567f61f812d,0xc59dc3105dd493b2,0x03b8f1a7d0eac0d7,0x22f468a7d1585605,0.424,0.450563,299552,0,PASS
+245433414,surface-world,gcc14-default,1,27,14,32860,0.000000,-140.000000,-2022.468750,0xcc51a567f61f812d,0xc59dc3105dd493b2,0x03b8f1a7d0eac0d7,0x22f468a7d1585605,0.182,0.197759,85244,0,PASS
+245433414,surface-world,gcc14-default,12,27,14,32860,0.000000,-140.000000,-2022.468750,0xcc51a567f61f812d,0xc59dc3105dd493b2,0x03b8f1a7d0eac0d7,0x22f468a7d1585605,0.433,0.459733,300260,0,PASS
+245433414,floating-islands,clang19-off,1,27,11,32838,0.000000,-17.574219,-116.296875,0x2e75a175d1005e4e,0x8f45449d7125c041,0x493909fdf6e5cba4,0x576100f342da3f02,1.138,1.154872,87048,0,PASS
+245433414,floating-islands,clang19-off,12,27,11,32838,0.000000,-17.574219,-116.296875,0x2e75a175d1005e4e,0x8f45449d7125c041,0x493909fdf6e5cba4,0x576100f342da3f02,0.629,0.656026,302520,0,PASS
+245433414,floating-islands,clang19-on,1,27,11,32838,0.000000,-17.574219,-116.296875,0x2e75a175d1005e4e,0x8f45449d7125c041,0x493909fdf6e5cba4,0x576100f342da3f02,1.112,1.129107,87048,0,PASS
+245433414,floating-islands,clang19-on,12,27,11,32838,0.000000,-17.574219,-116.296875,0x2e75a175d1005e4e,0x8f45449d7125c041,0x493909fdf6e5cba4,0x576100f342da3f02,0.582,0.610645,302704,0,PASS
+245433414,floating-islands,gcc14-default,1,27,11,32838,0.000000,-17.574219,-116.296875,0x2e75a175d1005e4e,0x8f45449d7125c041,0x493909fdf6e5cba4,0x576100f342da3f02,1.189,1.205364,87708,0,PASS
+245433414,floating-islands,gcc14-default,12,27,11,32838,0.000000,-17.574219,-116.296875,0x2e75a175d1005e4e,0x8f45449d7125c041,0x493909fdf6e5cba4,0x576100f342da3f02,0.635,0.663132,303108,0,PASS
+277442974,surface-world,clang19-off,1,27,9,27060,0.000000,-140.000000,-2004.875000,0x8bfa82ca5e492c37,0x1630487dbcc54469,0xb37b440b5f2b1c98,0xe296c565d2eb2ef0,0.274,0.290495,86336,0,PASS
+277442974,surface-world,clang19-off,12,27,9,27060,0.000000,-140.000000,-2004.875000,0x8bfa82ca5e492c37,0x1630487dbcc54469,0xb37b440b5f2b1c98,0xe296c565d2eb2ef0,0.471,0.497591,296556,0,PASS
+277442974,surface-world,clang19-on,1,27,9,27060,0.000000,-140.000000,-2004.875000,0x8bfa82ca5e492c37,0x1630487dbcc54469,0xb37b440b5f2b1c98,0xe296c565d2eb2ef0,0.264,0.280808,86376,0,PASS
+277442974,surface-world,clang19-on,12,27,9,27060,0.000000,-140.000000,-2004.875000,0x8bfa82ca5e492c37,0x1630487dbcc54469,0xb37b440b5f2b1c98,0xe296c565d2eb2ef0,0.481,0.507069,296232,0,PASS
+277442974,surface-world,gcc14-default,1,27,9,27060,0.000000,-140.000000,-2004.875000,0x8bfa82ca5e492c37,0x1630487dbcc54469,0xb37b440b5f2b1c98,0xe296c565d2eb2ef0,0.247,0.263402,86856,0,PASS
+277442974,surface-world,gcc14-default,12,27,9,27060,0.000000,-140.000000,-2004.875000,0x8bfa82ca5e492c37,0x1630487dbcc54469,0xb37b440b5f2b1c98,0xe296c565d2eb2ef0,0.476,0.504203,297224,0,PASS
+277442974,floating-islands,clang19-off,1,27,13,28088,39.199219,19.328125,-117.750000,0x8cb55c56b1629d42,0xc6532d9d3b8a987d,0x1a07243bd2c586c1,0x5d957c64ae620a5e,1.172,1.186572,88460,0,PASS
+277442974,floating-islands,clang19-off,12,27,13,28088,39.199219,19.328125,-117.750000,0x8cb55c56b1629d42,0xc6532d9d3b8a987d,0x1a07243bd2c586c1,0x5d957c64ae620a5e,0.642,0.673081,303884,0,PASS
+277442974,floating-islands,clang19-on,1,27,13,28088,39.199219,19.328125,-117.750000,0x8cb55c56b1629d42,0xc6532d9d3b8a987d,0x1a07243bd2c586c1,0x5d957c64ae620a5e,1.187,1.211616,88412,0,PASS
+277442974,floating-islands,clang19-on,12,27,13,28088,39.199219,19.328125,-117.750000,0x8cb55c56b1629d42,0xc6532d9d3b8a987d,0x1a07243bd2c586c1,0x5d957c64ae620a5e,0.664,0.692926,303956,0,PASS
+277442974,floating-islands,gcc14-default,1,27,13,28088,39.199219,19.328125,-117.750000,0x8cb55c56b1629d42,0xc6532d9d3b8a987d,0x1a07243bd2c586c1,0x5d957c64ae620a5e,1.210,1.225245,89264,0,PASS
+277442974,floating-islands,gcc14-default,12,27,13,28088,39.199219,19.328125,-117.750000,0x8cb55c56b1629d42,0xc6532d9d3b8a987d,0x1a07243bd2c586c1,0x5d957c64ae620a5e,0.662,0.689572,304204,0,PASS
+297746112,surface-world,clang19-off,1,27,13,38252,0.000000,-140.000000,-2010.195312,0x00c869b6875b7ef5,0x085684513feca8f2,0x118ce3a71b3a4b6d,0x5e5c8df181277ea2,0.266,0.281980,86512,0,PASS
+297746112,surface-world,clang19-off,12,27,13,38252,0.000000,-140.000000,-2010.195312,0x00c869b6875b7ef5,0x085684513feca8f2,0x118ce3a71b3a4b6d,0x5e5c8df181277ea2,0.462,0.489317,300184,0,PASS
+297746112,surface-world,clang19-on,1,27,13,38252,0.000000,-140.000000,-2010.195312,0x00c869b6875b7ef5,0x085684513feca8f2,0x118ce3a71b3a4b6d,0x5e5c8df181277ea2,0.265,0.281098,86148,0,PASS
+297746112,surface-world,clang19-on,12,27,13,38252,0.000000,-140.000000,-2010.195312,0x00c869b6875b7ef5,0x085684513feca8f2,0x118ce3a71b3a4b6d,0x5e5c8df181277ea2,0.447,0.474064,300408,0,PASS
+297746112,surface-world,gcc14-default,1,27,13,38252,0.000000,-140.000000,-2010.195312,0x00c869b6875b7ef5,0x085684513feca8f2,0x118ce3a71b3a4b6d,0x5e5c8df181277ea2,0.253,0.269185,87028,0,PASS
+297746112,surface-world,gcc14-default,12,27,13,38252,0.000000,-140.000000,-2010.195312,0x00c869b6875b7ef5,0x085684513feca8f2,0x118ce3a71b3a4b6d,0x5e5c8df181277ea2,0.461,0.489903,300916,0,PASS
+297746112,floating-islands,clang19-off,1,27,15,29396,39.199219,20.609375,-119.089844,0x2425273f1a174c04,0x204be5cda8d98412,0x0565960cfc012768,0x14faf071d204cf2c,1.471,1.486649,86560,0,PASS
+297746112,floating-islands,clang19-off,12,27,15,29396,39.199219,20.609375,-119.089844,0x2425273f1a174c04,0x204be5cda8d98412,0x0565960cfc012768,0x14faf071d204cf2c,0.707,0.733259,301392,0,PASS
+297746112,floating-islands,clang19-on,1,27,15,29396,39.199219,20.609375,-119.089844,0x2425273f1a174c04,0x204be5cda8d98412,0x0565960cfc012768,0x14faf071d204cf2c,1.476,1.492227,86404,0,PASS
+297746112,floating-islands,clang19-on,12,27,15,29396,39.199219,20.609375,-119.089844,0x2425273f1a174c04,0x204be5cda8d98412,0x0565960cfc012768,0x14faf071d204cf2c,0.697,0.724120,301764,0,PASS
+297746112,floating-islands,gcc14-default,1,27,15,29396,39.199219,20.609375,-119.089844,0x2425273f1a174c04,0x204be5cda8d98412,0x0565960cfc012768,0x14faf071d204cf2c,1.606,1.623971,87112,0,PASS
+297746112,floating-islands,gcc14-default,12,27,15,29396,39.199219,20.609375,-119.089844,0x2425273f1a174c04,0x204be5cda8d98412,0x0565960cfc012768,0x14faf071d204cf2c,0.744,0.770764,301868,0,PASS
+336768467,surface-world,clang19-off,1,27,15,29748,0.000000,-140.000000,-2014.343750,0x2756e6dc388ddf57,0x66344082236c5630,0x8d1456f1c9c5391d,0x8c5dafb1129150a4,0.193,0.210861,84432,0,PASS
+336768467,surface-world,clang19-off,12,27,15,29748,0.000000,-140.000000,-2014.343750,0x2756e6dc388ddf57,0x66344082236c5630,0x8d1456f1c9c5391d,0x8c5dafb1129150a4,0.439,0.465773,299308,0,PASS
+336768467,surface-world,clang19-on,1,27,15,29748,0.000000,-140.000000,-2014.343750,0x2756e6dc388ddf57,0x66344082236c5630,0x8d1456f1c9c5391d,0x8c5dafb1129150a4,0.203,0.220275,84220,0,PASS
+336768467,surface-world,clang19-on,12,27,15,29748,0.000000,-140.000000,-2014.343750,0x2756e6dc388ddf57,0x66344082236c5630,0x8d1456f1c9c5391d,0x8c5dafb1129150a4,0.442,0.472005,298776,0,PASS
+336768467,surface-world,gcc14-default,1,27,15,29748,0.000000,-140.000000,-2014.343750,0x2756e6dc388ddf57,0x66344082236c5630,0x8d1456f1c9c5391d,0x8c5dafb1129150a4,0.195,0.210295,84640,0,PASS
+336768467,surface-world,gcc14-default,12,27,15,29748,0.000000,-140.000000,-2014.343750,0x2756e6dc388ddf57,0x66344082236c5630,0x8d1456f1c9c5391d,0x8c5dafb1129150a4,0.441,0.468001,299924,0,PASS
+336768467,floating-islands,clang19-off,1,27,12,33652,0.000000,-20.933594,-116.355469,0xfa8249483c186760,0xc42acd7c93e1525c,0xdef1819f3ea0dfba,0xe7f844319ae479a5,1.560,1.576635,86384,0,PASS
+336768467,floating-islands,clang19-off,12,27,12,33652,0.000000,-20.933594,-116.355469,0xfa8249483c186760,0xc42acd7c93e1525c,0xdef1819f3ea0dfba,0xe7f844319ae479a5,0.687,0.715116,302356,0,PASS
+336768467,floating-islands,clang19-on,1,27,12,33652,0.000000,-20.933594,-116.355469,0xfa8249483c186760,0xc42acd7c93e1525c,0xdef1819f3ea0dfba,0xe7f844319ae479a5,1.607,1.622026,86512,0,PASS
+336768467,floating-islands,clang19-on,12,27,12,33652,0.000000,-20.933594,-116.355469,0xfa8249483c186760,0xc42acd7c93e1525c,0xdef1819f3ea0dfba,0xe7f844319ae479a5,0.756,0.786103,301928,0,PASS
+336768467,floating-islands,gcc14-default,1,27,12,33652,0.000000,-20.933594,-116.355469,0xfa8249483c186760,0xc42acd7c93e1525c,0xdef1819f3ea0dfba,0xe7f844319ae479a5,1.659,1.676423,87116,0,PASS
+336768467,floating-islands,gcc14-default,12,27,12,33652,0.000000,-20.933594,-116.355469,0xfa8249483c186760,0xc42acd7c93e1525c,0xdef1819f3ea0dfba,0xe7f844319ae479a5,0.745,0.770547,302312,0,PASS
+512532080,surface-world,clang19-off,1,27,14,28800,0.000000,-140.000000,-2011.875000,0xa5ad29a27d991d10,0x060bc1fca8569368,0x726e34d2232e7e04,0x2cfa7c1af8ec4ee4,0.238,0.255841,84384,0,PASS
+512532080,surface-world,clang19-off,12,27,14,28800,0.000000,-140.000000,-2011.875000,0xa5ad29a27d991d10,0x060bc1fca8569368,0x726e34d2232e7e04,0x2cfa7c1af8ec4ee4,0.472,0.498432,298872,0,PASS
+512532080,surface-world,clang19-on,1,27,14,28800,0.000000,-140.000000,-2011.875000,0xa5ad29a27d991d10,0x060bc1fca8569368,0x726e34d2232e7e04,0x2cfa7c1af8ec4ee4,0.224,0.240126,84544,0,PASS
+512532080,surface-world,clang19-on,12,27,14,28800,0.000000,-140.000000,-2011.875000,0xa5ad29a27d991d10,0x060bc1fca8569368,0x726e34d2232e7e04,0x2cfa7c1af8ec4ee4,0.456,0.482429,299344,0,PASS
+512532080,surface-world,gcc14-default,1,27,14,28800,0.000000,-140.000000,-2011.875000,0xa5ad29a27d991d10,0x060bc1fca8569368,0x726e34d2232e7e04,0x2cfa7c1af8ec4ee4,0.219,0.236902,84712,0,PASS
+512532080,surface-world,gcc14-default,12,27,14,28800,0.000000,-140.000000,-2011.875000,0xa5ad29a27d991d10,0x060bc1fca8569368,0x726e34d2232e7e04,0x2cfa7c1af8ec4ee4,0.468,0.494269,299636,0,PASS
+512532080,floating-islands,clang19-off,1,27,14,34900,0.000000,-20.355469,-116.640625,0xb098abe6a38cfe3a,0x436a6541192ed00e,0x75e2b7c9004349c2,0x534923147812f216,1.231,1.246649,86052,0,PASS
+512532080,floating-islands,clang19-off,12,27,14,34900,0.000000,-20.355469,-116.640625,0xb098abe6a38cfe3a,0x436a6541192ed00e,0x75e2b7c9004349c2,0x534923147812f216,0.615,0.641439,301628,0,PASS
+512532080,floating-islands,clang19-on,1,27,14,34900,0.000000,-20.355469,-116.640625,0xb098abe6a38cfe3a,0x436a6541192ed00e,0x75e2b7c9004349c2,0x534923147812f216,1.228,1.242805,85768,0,PASS
+512532080,floating-islands,clang19-on,12,27,14,34900,0.000000,-20.355469,-116.640625,0xb098abe6a38cfe3a,0x436a6541192ed00e,0x75e2b7c9004349c2,0x534923147812f216,0.627,0.655211,301628,0,PASS
+512532080,floating-islands,gcc14-default,1,27,14,34900,0.000000,-20.355469,-116.640625,0xb098abe6a38cfe3a,0x436a6541192ed00e,0x75e2b7c9004349c2,0x534923147812f216,1.359,1.374927,86224,0,PASS
+512532080,floating-islands,gcc14-default,12,27,14,34900,0.000000,-20.355469,-116.640625,0xb098abe6a38cfe3a,0x436a6541192ed00e,0x75e2b7c9004349c2,0x534923147812f216,0.653,0.684763,302532,0,PASS
+821120640,surface-world,clang19-off,1,27,17,29100,0.000000,-140.000000,-2017.054688,0xb6424f19c272b61c,0xe4f7308d87cb3bc2,0x3f43e313583419b6,0xe7bf900c0a18e037,0.235,0.252205,84088,0,PASS
+821120640,surface-world,clang19-off,12,27,17,29100,0.000000,-140.000000,-2017.054688,0xb6424f19c272b61c,0xe4f7308d87cb3bc2,0x3f43e313583419b6,0xe7bf900c0a18e037,0.471,0.497535,298356,0,PASS
+821120640,surface-world,clang19-on,1,27,17,29100,0.000000,-140.000000,-2017.054688,0xb6424f19c272b61c,0xe4f7308d87cb3bc2,0x3f43e313583419b6,0xe7bf900c0a18e037,0.232,0.246887,84276,0,PASS
+821120640,surface-world,clang19-on,12,27,17,29100,0.000000,-140.000000,-2017.054688,0xb6424f19c272b61c,0xe4f7308d87cb3bc2,0x3f43e313583419b6,0xe7bf900c0a18e037,0.444,0.469734,298640,0,PASS
+821120640,surface-world,gcc14-default,1,27,17,29100,0.000000,-140.000000,-2017.054688,0xb6424f19c272b61c,0xe4f7308d87cb3bc2,0x3f43e313583419b6,0xe7bf900c0a18e037,0.227,0.242379,84848,0,PASS
+821120640,surface-world,gcc14-default,12,27,17,29100,0.000000,-140.000000,-2017.054688,0xb6424f19c272b61c,0xe4f7308d87cb3bc2,0x3f43e313583419b6,0xe7bf900c0a18e037,0.446,0.472509,299120,0,PASS
+821120640,floating-islands,clang19-off,1,27,11,27034,39.199219,18.121094,-108.417969,0x3db9226404527944,0xb3328f1c88e96c70,0x1e9434cf277c52f2,0x7623a6394f56d6bc,1.593,1.609040,86048,0,PASS
+821120640,floating-islands,clang19-off,12,27,11,27034,39.199219,18.121094,-108.417969,0x3db9226404527944,0xb3328f1c88e96c70,0x1e9434cf277c52f2,0x7623a6394f56d6bc,0.771,0.798393,300532,0,PASS
+821120640,floating-islands,clang19-on,1,27,11,27034,39.199219,18.121094,-108.417969,0x3db9226404527944,0xb3328f1c88e96c70,0x1e9434cf277c52f2,0x7623a6394f56d6bc,1.647,1.661841,85752,0,PASS
+821120640,floating-islands,clang19-on,12,27,11,27034,39.199219,18.121094,-108.417969,0x3db9226404527944,0xb3328f1c88e96c70,0x1e9434cf277c52f2,0x7623a6394f56d6bc,0.731,0.757095,300348,0,PASS
+821120640,floating-islands,gcc14-default,1,27,11,27034,39.199219,18.121094,-108.417969,0x3db9226404527944,0xb3328f1c88e96c70,0x1e9434cf277c52f2,0x7623a6394f56d6bc,1.791,1.807593,86356,0,PASS
+821120640,floating-islands,gcc14-default,12,27,11,27034,39.199219,18.121094,-108.417969,0x3db9226404527944,0xb3328f1c88e96c70,0x1e9434cf277c52f2,0x7623a6394f56d6bc,0.778,0.806980,301348,0,PASS
+853538490,surface-world,clang19-off,1,27,13,41529,0.000000,-140.000000,-2000.957031,0xbe1224f297dc7ad0,0x7e10918947195940,0xac9466d520e8d24d,0xd4a8b472e9b12049,0.325,0.340334,84252,0,PASS
+853538490,surface-world,clang19-off,12,27,13,41529,0.000000,-140.000000,-2000.957031,0xbe1224f297dc7ad0,0x7e10918947195940,0xac9466d520e8d24d,0xd4a8b472e9b12049,0.490,0.517745,297932,0,PASS
+853538490,surface-world,clang19-on,1,27,13,41529,0.000000,-140.000000,-2000.957031,0xbe1224f297dc7ad0,0x7e10918947195940,0xac9466d520e8d24d,0xd4a8b472e9b12049,0.307,0.324074,84504,0,PASS
+853538490,surface-world,clang19-on,12,27,13,41529,0.000000,-140.000000,-2000.957031,0xbe1224f297dc7ad0,0x7e10918947195940,0xac9466d520e8d24d,0xd4a8b472e9b12049,0.484,0.510395,297860,0,PASS
+853538490,surface-world,gcc14-default,1,27,13,41529,0.000000,-140.000000,-2000.957031,0xbe1224f297dc7ad0,0x7e10918947195940,0xac9466d520e8d24d,0xd4a8b472e9b12049,0.292,0.309051,85156,0,PASS
+853538490,surface-world,gcc14-default,12,27,13,41529,0.000000,-140.000000,-2000.957031,0xbe1224f297dc7ad0,0x7e10918947195940,0xac9466d520e8d24d,0xd4a8b472e9b12049,0.487,0.516413,300220,0,PASS
+853538490,floating-islands,clang19-off,1,27,12,21100,64.398438,75.593750,-125.132812,0x7e568fc03c907914,0x6a9fc36512216056,0x42911f340bd75887,0x9a884d5fe3bc3a9f,1.502,1.518453,85300,0,PASS
+853538490,floating-islands,clang19-off,12,27,12,21100,64.398438,75.593750,-125.132812,0x7e568fc03c907914,0x6a9fc36512216056,0x42911f340bd75887,0x9a884d5fe3bc3a9f,0.752,0.778760,299572,0,PASS
+853538490,floating-islands,clang19-on,1,27,12,21100,64.398438,75.593750,-125.132812,0x7e568fc03c907914,0x6a9fc36512216056,0x42911f340bd75887,0x9a884d5fe3bc3a9f,1.511,1.527571,85176,0,PASS
+853538490,floating-islands,clang19-on,12,27,12,21100,64.398438,75.593750,-125.132812,0x7e568fc03c907914,0x6a9fc36512216056,0x42911f340bd75887,0x9a884d5fe3bc3a9f,0.743,0.771772,299476,0,PASS
+853538490,floating-islands,gcc14-default,1,27,12,21100,64.398438,75.593750,-125.132812,0x7e568fc03c907914,0x6a9fc36512216056,0x42911f340bd75887,0x9a884d5fe3bc3a9f,1.490,1.506165,86100,0,PASS
+853538490,floating-islands,gcc14-default,12,27,12,21100,64.398438,75.593750,-125.132812,0x7e568fc03c907914,0x6a9fc36512216056,0x42911f340bd75887,0x9a884d5fe3bc3a9f,0.733,0.759420,300016,0,PASS
+861026696,surface-world,clang19-off,1,27,14,29214,0.000000,-140.000000,-2015.378906,0xb04a05c6e8c488dc,0x28706d092bd82c9a,0xcdcd6eb7219ba860,0x713552a70402ee90,0.206,0.222328,85820,0,PASS
+861026696,surface-world,clang19-off,12,27,14,29214,0.000000,-140.000000,-2015.378906,0xb04a05c6e8c488dc,0x28706d092bd82c9a,0xcdcd6eb7219ba860,0x713552a70402ee90,0.442,0.469511,301112,0,PASS
+861026696,surface-world,clang19-on,1,27,14,29214,0.000000,-140.000000,-2015.378906,0xb04a05c6e8c488dc,0x28706d092bd82c9a,0xcdcd6eb7219ba860,0x713552a70402ee90,0.198,0.218476,86120,0,PASS
+861026696,surface-world,clang19-on,12,27,14,29214,0.000000,-140.000000,-2015.378906,0xb04a05c6e8c488dc,0x28706d092bd82c9a,0xcdcd6eb7219ba860,0x713552a70402ee90,0.420,0.449855,300708,0,PASS
+861026696,surface-world,gcc14-default,1,27,14,29214,0.000000,-140.000000,-2015.378906,0xb04a05c6e8c488dc,0x28706d092bd82c9a,0xcdcd6eb7219ba860,0x713552a70402ee90,0.198,0.213825,86600,0,PASS
+861026696,surface-world,gcc14-default,12,27,14,29214,0.000000,-140.000000,-2015.378906,0xb04a05c6e8c488dc,0x28706d092bd82c9a,0xcdcd6eb7219ba860,0x713552a70402ee90,0.425,0.451908,301600,0,PASS
+861026696,floating-islands,clang19-off,1,27,12,20194,-39.199219,16.035156,-124.882812,0xcb6792ec32335dc5,0x195efb6c80156e4a,0x99d2394c065c7d84,0xa650d8cc28f6ca8c,1.205,1.221248,86916,0,PASS
+861026696,floating-islands,clang19-off,12,27,12,20194,-39.199219,16.035156,-124.882812,0xcb6792ec32335dc5,0x195efb6c80156e4a,0x99d2394c065c7d84,0xa650d8cc28f6ca8c,0.626,0.656240,301180,0,PASS
+861026696,floating-islands,clang19-on,1,27,12,20194,-39.199219,16.035156,-124.882812,0xcb6792ec32335dc5,0x195efb6c80156e4a,0x99d2394c065c7d84,0xa650d8cc28f6ca8c,1.204,1.220794,86292,0,PASS
+861026696,floating-islands,clang19-on,12,27,12,20194,-39.199219,16.035156,-124.882812,0xcb6792ec32335dc5,0x195efb6c80156e4a,0x99d2394c065c7d84,0xa650d8cc28f6ca8c,0.629,0.656007,300976,0,PASS
+861026696,floating-islands,gcc14-default,1,27,12,20194,-39.199219,16.035156,-124.882812,0xcb6792ec32335dc5,0x195efb6c80156e4a,0x99d2394c065c7d84,0xa650d8cc28f6ca8c,1.304,1.320997,87184,0,PASS
+861026696,floating-islands,gcc14-default,12,27,12,20194,-39.199219,16.035156,-124.882812,0xcb6792ec32335dc5,0x195efb6c80156e4a,0x99d2394c065c7d84,0xa650d8cc28f6ca8c,0.661,0.688252,301512,0,PASS
+1026251636,surface-world,clang19-off,1,27,9,28584,0.000000,-140.000000,-2001.500000,0xf6bb5ab0a9e2307d,0x4767f425e56543f4,0x7d07264eb771e914,0x4c10ed20b1feb752,0.181,0.196873,89468,0,PASS
+1026251636,surface-world,clang19-off,12,27,9,28584,0.000000,-140.000000,-2001.500000,0xf6bb5ab0a9e2307d,0x4767f425e56543f4,0x7d07264eb771e914,0x4c10ed20b1feb752,0.429,0.455273,299856,0,PASS
+1026251636,surface-world,clang19-on,1,27,9,28584,0.000000,-140.000000,-2001.500000,0xf6bb5ab0a9e2307d,0x4767f425e56543f4,0x7d07264eb771e914,0x4c10ed20b1feb752,0.175,0.191878,88936,0,PASS
+1026251636,surface-world,clang19-on,12,27,9,28584,0.000000,-140.000000,-2001.500000,0xf6bb5ab0a9e2307d,0x4767f425e56543f4,0x7d07264eb771e914,0x4c10ed20b1feb752,0.421,0.446342,300064,0,PASS
+1026251636,surface-world,gcc14-default,1,27,9,28584,0.000000,-140.000000,-2001.500000,0xf6bb5ab0a9e2307d,0x4767f425e56543f4,0x7d07264eb771e914,0x4c10ed20b1feb752,0.186,0.201393,89824,0,PASS
+1026251636,surface-world,gcc14-default,12,27,9,28584,0.000000,-140.000000,-2001.500000,0xf6bb5ab0a9e2307d,0x4767f425e56543f4,0x7d07264eb771e914,0x4c10ed20b1feb752,0.440,0.465684,300752,0,PASS
+1026251636,floating-islands,clang19-off,1,27,8,19958,-25.199219,-74.664062,-109.117188,0xe62d0a684fcd1398,0xca0e1740a58cafbd,0xb28adbbe9f346438,0xaeddcc5189ee4f9c,2.014,2.030369,89720,0,PASS
+1026251636,floating-islands,clang19-off,12,27,8,19958,-25.199219,-74.664062,-109.117188,0xe62d0a684fcd1398,0xca0e1740a58cafbd,0xb28adbbe9f346438,0xaeddcc5189ee4f9c,0.784,0.811497,304088,0,PASS
+1026251636,floating-islands,clang19-on,1,27,8,19958,-25.199219,-74.664062,-109.117188,0xe62d0a684fcd1398,0xca0e1740a58cafbd,0xb28adbbe9f346438,0xaeddcc5189ee4f9c,2.037,2.053588,90148,0,PASS
+1026251636,floating-islands,clang19-on,12,27,8,19958,-25.199219,-74.664062,-109.117188,0xe62d0a684fcd1398,0xca0e1740a58cafbd,0xb28adbbe9f346438,0xaeddcc5189ee4f9c,0.805,0.831833,303992,0,PASS
+1026251636,floating-islands,gcc14-default,1,27,8,19958,-25.199219,-74.664062,-109.117188,0xe62d0a684fcd1398,0xca0e1740a58cafbd,0xb28adbbe9f346438,0xaeddcc5189ee4f9c,2.030,2.046181,90280,0,PASS
+1026251636,floating-islands,gcc14-default,12,27,8,19958,-25.199219,-74.664062,-109.117188,0xe62d0a684fcd1398,0xca0e1740a58cafbd,0xb28adbbe9f346438,0xaeddcc5189ee4f9c,0.829,0.855747,304588,0,PASS
+1077415394,surface-world,clang19-off,1,27,12,27666,0.000000,-140.000000,-2018.636719,0xb65f4acca21a93d8,0x0a3cddad02604438,0xe1cc5b39a1d20a9c,0xba1d3df14ef1dbc1,0.193,0.208931,87732,0,PASS
+1077415394,surface-world,clang19-off,12,27,12,27666,0.000000,-140.000000,-2018.636719,0xb65f4acca21a93d8,0x0a3cddad02604438,0xe1cc5b39a1d20a9c,0xba1d3df14ef1dbc1,0.436,0.463397,302684,0,PASS
+1077415394,surface-world,clang19-on,1,27,12,27666,0.000000,-140.000000,-2018.636719,0xb65f4acca21a93d8,0x0a3cddad02604438,0xe1cc5b39a1d20a9c,0xba1d3df14ef1dbc1,0.193,0.210262,87604,0,PASS
+1077415394,surface-world,clang19-on,12,27,12,27666,0.000000,-140.000000,-2018.636719,0xb65f4acca21a93d8,0x0a3cddad02604438,0xe1cc5b39a1d20a9c,0xba1d3df14ef1dbc1,0.420,0.447388,300700,0,PASS
+1077415394,surface-world,gcc14-default,1,27,12,27666,0.000000,-140.000000,-2018.636719,0xb65f4acca21a93d8,0x0a3cddad02604438,0xe1cc5b39a1d20a9c,0xba1d3df14ef1dbc1,0.190,0.205810,88040,0,PASS
+1077415394,surface-world,gcc14-default,12,27,12,27666,0.000000,-140.000000,-2018.636719,0xb65f4acca21a93d8,0x0a3cddad02604438,0xe1cc5b39a1d20a9c,0xba1d3df14ef1dbc1,0.423,0.451176,302760,0,PASS
+1077415394,floating-islands,clang19-off,1,27,9,25992,39.199219,20.472656,-109.757812,0x76ffc67a9d410089,0x712f9bef468c36e1,0xd15add3c403cf9d2,0x1f98a205464ab093,1.607,1.623777,88912,0,PASS
+1077415394,floating-islands,clang19-off,12,27,9,25992,39.199219,20.472656,-109.757812,0x76ffc67a9d410089,0x712f9bef468c36e1,0xd15add3c403cf9d2,0x1f98a205464ab093,0.714,0.740654,303924,0,PASS
+1077415394,floating-islands,clang19-on,1,27,9,25992,39.199219,20.472656,-109.757812,0x76ffc67a9d410089,0x712f9bef468c36e1,0xd15add3c403cf9d2,0x1f98a205464ab093,1.587,1.603589,89156,0,PASS
+1077415394,floating-islands,clang19-on,12,27,9,25992,39.199219,20.472656,-109.757812,0x76ffc67a9d410089,0x712f9bef468c36e1,0xd15add3c403cf9d2,0x1f98a205464ab093,0.678,0.704362,303820,0,PASS
+1077415394,floating-islands,gcc14-default,1,27,9,25992,39.199219,20.472656,-109.757812,0x76ffc67a9d410089,0x712f9bef468c36e1,0xd15add3c403cf9d2,0x1f98a205464ab093,1.751,1.766817,89248,0,PASS
+1077415394,floating-islands,gcc14-default,12,27,9,25992,39.199219,20.472656,-109.757812,0x76ffc67a9d410089,0x712f9bef468c36e1,0xd15add3c403cf9d2,0x1f98a205464ab093,0.726,0.753263,304336,0,PASS
+1130999017,surface-world,clang19-off,1,27,15,38852,0.000000,-140.000000,-1885.390625,0xd4fee006d89064ec,0xc2e722815c510b8d,0xaee1e5e204213289,0x6107884769e6196b,0.258,0.275630,85440,0,PASS
+1130999017,surface-world,clang19-off,12,27,15,38852,0.000000,-140.000000,-1885.390625,0xd4fee006d89064ec,0xc2e722815c510b8d,0xaee1e5e204213289,0x6107884769e6196b,0.452,0.478967,301608,0,PASS
+1130999017,surface-world,clang19-on,1,27,15,38852,0.000000,-140.000000,-1885.390625,0xd4fee006d89064ec,0xc2e722815c510b8d,0xaee1e5e204213289,0x6107884769e6196b,0.251,0.266976,85864,0,PASS
+1130999017,surface-world,clang19-on,12,27,15,38852,0.000000,-140.000000,-1885.390625,0xd4fee006d89064ec,0xc2e722815c510b8d,0xaee1e5e204213289,0x6107884769e6196b,0.443,0.472895,299580,0,PASS
+1130999017,surface-world,gcc14-default,1,27,15,38852,0.000000,-140.000000,-1885.390625,0xd4fee006d89064ec,0xc2e722815c510b8d,0xaee1e5e204213289,0x6107884769e6196b,0.243,0.258360,86216,0,PASS
+1130999017,surface-world,gcc14-default,12,27,15,38852,0.000000,-140.000000,-1885.390625,0xd4fee006d89064ec,0xc2e722815c510b8d,0xaee1e5e204213289,0x6107884769e6196b,0.430,0.459582,300604,0,PASS
+1130999017,floating-islands,clang19-off,1,27,14,25686,-39.199219,19.199219,-119.304688,0x9fc0c1b33da03fc0,0xc0dafe8b2a4570f1,0x24ac0b621165dc1c,0x3e15c5e91f7d7e46,1.116,1.133283,84856,0,PASS
+1130999017,floating-islands,clang19-off,12,27,14,25686,-39.199219,19.199219,-119.304688,0x9fc0c1b33da03fc0,0xc0dafe8b2a4570f1,0x24ac0b621165dc1c,0x3e15c5e91f7d7e46,0.608,0.635013,299952,0,PASS
+1130999017,floating-islands,clang19-on,1,27,14,25686,-39.199219,19.199219,-119.304688,0x9fc0c1b33da03fc0,0xc0dafe8b2a4570f1,0x24ac0b621165dc1c,0x3e15c5e91f7d7e46,1.131,1.147307,84968,0,PASS
+1130999017,floating-islands,clang19-on,12,27,14,25686,-39.199219,19.199219,-119.304688,0x9fc0c1b33da03fc0,0xc0dafe8b2a4570f1,0x24ac0b621165dc1c,0x3e15c5e91f7d7e46,0.600,0.627582,299320,0,PASS
+1130999017,floating-islands,gcc14-default,1,27,14,25686,-39.199219,19.199219,-119.304688,0x9fc0c1b33da03fc0,0xc0dafe8b2a4570f1,0x24ac0b621165dc1c,0x3e15c5e91f7d7e46,1.180,1.196907,85352,0,PASS
+1130999017,floating-islands,gcc14-default,12,27,14,25686,-39.199219,19.199219,-119.304688,0x9fc0c1b33da03fc0,0xc0dafe8b2a4570f1,0x24ac0b621165dc1c,0x3e15c5e91f7d7e46,0.653,0.679477,300280,0,PASS
+1156488597,surface-world,clang19-off,1,27,10,26660,0.000000,-140.000000,-2012.031250,0xf918cd1d254bf5ad,0x93e291c7e8ab3281,0x115d528201ee55de,0x8282368945b9aa39,0.169,0.185411,84912,0,PASS
+1156488597,surface-world,clang19-off,12,27,10,26660,0.000000,-140.000000,-2012.031250,0xf918cd1d254bf5ad,0x93e291c7e8ab3281,0x115d528201ee55de,0x8282368945b9aa39,0.415,0.440950,296868,0,PASS
+1156488597,surface-world,clang19-on,1,27,10,26660,0.000000,-140.000000,-2012.031250,0xf918cd1d254bf5ad,0x93e291c7e8ab3281,0x115d528201ee55de,0x8282368945b9aa39,0.170,0.185517,85336,0,PASS
+1156488597,surface-world,clang19-on,12,27,10,26660,0.000000,-140.000000,-2012.031250,0xf918cd1d254bf5ad,0x93e291c7e8ab3281,0x115d528201ee55de,0x8282368945b9aa39,0.458,0.494970,296900,0,PASS
+1156488597,surface-world,gcc14-default,1,27,10,26660,0.000000,-140.000000,-2012.031250,0xf918cd1d254bf5ad,0x93e291c7e8ab3281,0x115d528201ee55de,0x8282368945b9aa39,0.178,0.205454,85672,0,PASS
+1156488597,surface-world,gcc14-default,12,27,10,26660,0.000000,-140.000000,-2012.031250,0xf918cd1d254bf5ad,0x93e291c7e8ab3281,0x115d528201ee55de,0x8282368945b9aa39,0.454,0.483690,297532,0,PASS
+1156488597,floating-islands,clang19-off,1,27,14,22928,-39.199219,16.464844,-121.550781,0x080c04f591e988da,0x7d2e52b446efd9d1,0x6dccf350fe593410,0x97ae318aaff326ae,1.464,1.480495,87092,0,PASS
+1156488597,floating-islands,clang19-off,12,27,14,22928,-39.199219,16.464844,-121.550781,0x080c04f591e988da,0x7d2e52b446efd9d1,0x6dccf350fe593410,0x97ae318aaff326ae,0.684,0.710558,301280,0,PASS
+1156488597,floating-islands,clang19-on,1,27,14,22928,-39.199219,16.464844,-121.550781,0x080c04f591e988da,0x7d2e52b446efd9d1,0x6dccf350fe593410,0x97ae318aaff326ae,1.481,1.498290,87056,0,PASS
+1156488597,floating-islands,clang19-on,12,27,14,22928,-39.199219,16.464844,-121.550781,0x080c04f591e988da,0x7d2e52b446efd9d1,0x6dccf350fe593410,0x97ae318aaff326ae,0.707,0.737492,301040,0,PASS
+1156488597,floating-islands,gcc14-default,1,27,14,22928,-39.199219,16.464844,-121.550781,0x080c04f591e988da,0x7d2e52b446efd9d1,0x6dccf350fe593410,0x97ae318aaff326ae,1.635,1.652170,87388,0,PASS
+1156488597,floating-islands,gcc14-default,12,27,14,22928,-39.199219,16.464844,-121.550781,0x080c04f591e988da,0x7d2e52b446efd9d1,0x6dccf350fe593410,0x97ae318aaff326ae,0.730,0.758962,301644,0,PASS
+1172304228,surface-world,clang19-off,1,27,9,28078,0.000000,-140.000000,-2030.214844,0x466d74beb6a3c43f,0x935c08e020dbe116,0x495814a08ffe3b6e,0xa3a7e103fe545c77,0.159,0.176089,84448,0,PASS
+1172304228,surface-world,clang19-off,12,27,9,28078,0.000000,-140.000000,-2030.214844,0x466d74beb6a3c43f,0x935c08e020dbe116,0x495814a08ffe3b6e,0xa3a7e103fe545c77,0.416,0.444129,294644,0,PASS
+1172304228,surface-world,clang19-on,1,27,9,28078,0.000000,-140.000000,-2030.214844,0x466d74beb6a3c43f,0x935c08e020dbe116,0x495814a08ffe3b6e,0xa3a7e103fe545c77,0.159,0.174634,84268,0,PASS
+1172304228,surface-world,clang19-on,12,27,9,28078,0.000000,-140.000000,-2030.214844,0x466d74beb6a3c43f,0x935c08e020dbe116,0x495814a08ffe3b6e,0xa3a7e103fe545c77,0.409,0.435936,294684,0,PASS
+1172304228,surface-world,gcc14-default,1,27,9,28078,0.000000,-140.000000,-2030.214844,0x466d74beb6a3c43f,0x935c08e020dbe116,0x495814a08ffe3b6e,0xa3a7e103fe545c77,0.161,0.177733,84864,0,PASS
+1172304228,surface-world,gcc14-default,12,27,9,28078,0.000000,-140.000000,-2030.214844,0x466d74beb6a3c43f,0x935c08e020dbe116,0x495814a08ffe3b6e,0xa3a7e103fe545c77,0.407,0.433961,295552,0,PASS
+1172304228,floating-islands,clang19-off,1,27,12,25280,-39.199219,16.859375,-120.363281,0xa4ceaef6289c2778,0xac854a5846adc6cb,0xc79cc3dcf8aa7882,0x2a36a844bc640838,0.855,0.871675,86436,0,PASS
+1172304228,floating-islands,clang19-off,12,27,12,25280,-39.199219,16.859375,-120.363281,0xa4ceaef6289c2778,0xac854a5846adc6cb,0xc79cc3dcf8aa7882,0x2a36a844bc640838,0.566,0.594146,300964,0,PASS
+1172304228,floating-islands,clang19-on,1,27,12,25280,-39.199219,16.859375,-120.363281,0xa4ceaef6289c2778,0xac854a5846adc6cb,0xc79cc3dcf8aa7882,0x2a36a844bc640838,0.866,0.882396,86372,0,PASS
+1172304228,floating-islands,clang19-on,12,27,12,25280,-39.199219,16.859375,-120.363281,0xa4ceaef6289c2778,0xac854a5846adc6cb,0xc79cc3dcf8aa7882,0x2a36a844bc640838,0.576,0.603920,301252,0,PASS
+1172304228,floating-islands,gcc14-default,1,27,12,25280,-39.199219,16.859375,-120.363281,0xa4ceaef6289c2778,0xac854a5846adc6cb,0xc79cc3dcf8aa7882,0x2a36a844bc640838,0.938,0.954134,86620,0,PASS
+1172304228,floating-islands,gcc14-default,12,27,12,25280,-39.199219,16.859375,-120.363281,0xa4ceaef6289c2778,0xac854a5846adc6cb,0xc79cc3dcf8aa7882,0x2a36a844bc640838,0.586,0.615590,301852,0,PASS
+1370340570,surface-world,clang19-off,1,27,9,26888,0.000000,-140.000000,-2026.738281,0xb71aa861999e9064,0x5e6eb187fe7aa3d1,0xdbd2bf3e112249bb,0xbb50eff77e4ba5a7,0.159,0.175263,84752,0,PASS
+1370340570,surface-world,clang19-off,12,27,9,26888,0.000000,-140.000000,-2026.738281,0xb71aa861999e9064,0x5e6eb187fe7aa3d1,0xdbd2bf3e112249bb,0xbb50eff77e4ba5a7,0.416,0.441389,295492,0,PASS
+1370340570,surface-world,clang19-on,1,27,9,26888,0.000000,-140.000000,-2026.738281,0xb71aa861999e9064,0x5e6eb187fe7aa3d1,0xdbd2bf3e112249bb,0xbb50eff77e4ba5a7,0.153,0.168519,84744,0,PASS
+1370340570,surface-world,clang19-on,12,27,9,26888,0.000000,-140.000000,-2026.738281,0xb71aa861999e9064,0x5e6eb187fe7aa3d1,0xdbd2bf3e112249bb,0xbb50eff77e4ba5a7,0.409,0.438368,295092,0,PASS
+1370340570,surface-world,gcc14-default,1,27,9,26888,0.000000,-140.000000,-2026.738281,0xb71aa861999e9064,0x5e6eb187fe7aa3d1,0xdbd2bf3e112249bb,0xbb50eff77e4ba5a7,0.155,0.170254,85124,0,PASS
+1370340570,surface-world,gcc14-default,12,27,9,26888,0.000000,-140.000000,-2026.738281,0xb71aa861999e9064,0x5e6eb187fe7aa3d1,0xdbd2bf3e112249bb,0xbb50eff77e4ba5a7,0.409,0.437481,296036,0,PASS
+1370340570,floating-islands,clang19-off,1,27,8,20458,-39.199219,17.164062,-114.296875,0xfe631978312f065a,0xc41cdcb438a98b86,0xc2df8d535d4c97d9,0xe26e0e5cc9e21c14,1.581,1.599496,86948,0,PASS
+1370340570,floating-islands,clang19-off,12,27,8,20458,-39.199219,17.164062,-114.296875,0xfe631978312f065a,0xc41cdcb438a98b86,0xc2df8d535d4c97d9,0xe26e0e5cc9e21c14,0.702,0.729410,301536,0,PASS
+1370340570,floating-islands,clang19-on,1,27,8,20458,-39.199219,17.164062,-114.296875,0xfe631978312f065a,0xc41cdcb438a98b86,0xc2df8d535d4c97d9,0xe26e0e5cc9e21c14,1.595,1.611272,87072,0,PASS
+1370340570,floating-islands,clang19-on,12,27,8,20458,-39.199219,17.164062,-114.296875,0xfe631978312f065a,0xc41cdcb438a98b86,0xc2df8d535d4c97d9,0xe26e0e5cc9e21c14,0.691,0.717960,301388,0,PASS
+1370340570,floating-islands,gcc14-default,1,27,8,20458,-39.199219,17.164062,-114.296875,0xfe631978312f065a,0xc41cdcb438a98b86,0xc2df8d535d4c97d9,0xe26e0e5cc9e21c14,1.728,1.744814,87540,0,PASS
+1370340570,floating-islands,gcc14-default,12,27,8,20458,-39.199219,17.164062,-114.296875,0xfe631978312f065a,0xc41cdcb438a98b86,0xc2df8d535d4c97d9,0xe26e0e5cc9e21c14,0.754,0.781424,302088,0,PASS
+1383925073,surface-world,clang19-off,1,27,13,27826,0.000000,-140.000000,-2018.113281,0x564bb6a29953fc31,0x891c57b01dc509f8,0xf94dfef226e94ece,0xf277b25c2571f165,0.181,0.196556,83960,0,PASS
+1383925073,surface-world,clang19-off,12,27,13,27826,0.000000,-140.000000,-2018.113281,0x564bb6a29953fc31,0x891c57b01dc509f8,0xf94dfef226e94ece,0xf277b25c2571f165,0.426,0.453780,298648,0,PASS
+1383925073,surface-world,clang19-on,1,27,13,27826,0.000000,-140.000000,-2018.113281,0x564bb6a29953fc31,0x891c57b01dc509f8,0xf94dfef226e94ece,0xf277b25c2571f165,0.184,0.201221,84120,0,PASS
+1383925073,surface-world,clang19-on,12,27,13,27826,0.000000,-140.000000,-2018.113281,0x564bb6a29953fc31,0x891c57b01dc509f8,0xf94dfef226e94ece,0xf277b25c2571f165,0.407,0.434497,298520,0,PASS
+1383925073,surface-world,gcc14-default,1,27,13,27826,0.000000,-140.000000,-2018.113281,0x564bb6a29953fc31,0x891c57b01dc509f8,0xf94dfef226e94ece,0xf277b25c2571f165,0.175,0.191617,84528,0,PASS
+1383925073,surface-world,gcc14-default,12,27,13,27826,0.000000,-140.000000,-2018.113281,0x564bb6a29953fc31,0x891c57b01dc509f8,0xf94dfef226e94ece,0xf277b25c2571f165,0.406,0.432371,299400,0,PASS
+1383925073,floating-islands,clang19-off,1,27,8,17340,64.398438,76.132812,-101.687500,0x20a6d43f24557065,0xace78f99c63a90bc,0xba9503af152a1017,0xb09b522bed1b8c47,1.524,1.540376,85480,0,PASS
+1383925073,floating-islands,clang19-off,12,27,8,17340,64.398438,76.132812,-101.687500,0x20a6d43f24557065,0xace78f99c63a90bc,0xba9503af152a1017,0xb09b522bed1b8c47,0.688,0.716589,299068,0,PASS
+1383925073,floating-islands,clang19-on,1,27,8,17340,64.398438,76.132812,-101.687500,0x20a6d43f24557065,0xace78f99c63a90bc,0xba9503af152a1017,0xb09b522bed1b8c47,1.524,1.540170,85484,0,PASS
+1383925073,floating-islands,clang19-on,12,27,8,17340,64.398438,76.132812,-101.687500,0x20a6d43f24557065,0xace78f99c63a90bc,0xba9503af152a1017,0xb09b522bed1b8c47,0.693,0.719692,299196,0,PASS
+1383925073,floating-islands,gcc14-default,1,27,8,17340,64.398438,76.132812,-101.687500,0x20a6d43f24557065,0xace78f99c63a90bc,0xba9503af152a1017,0xb09b522bed1b8c47,1.661,1.676492,85764,0,PASS
+1383925073,floating-islands,gcc14-default,12,27,8,17340,64.398438,76.132812,-101.687500,0x20a6d43f24557065,0xace78f99c63a90bc,0xba9503af152a1017,0xb09b522bed1b8c47,0.728,0.755271,299796,0,PASS
+1401164998,surface-world,clang19-off,1,27,14,33671,0.000000,-140.000000,-1923.625000,0x539b7c44ed2d40c4,0x2daa8cf5e08fb16e,0xd87700809feafff4,0xc2e832153a03b5d7,0.286,0.301458,85156,0,PASS
+1401164998,surface-world,clang19-off,12,27,14,33671,0.000000,-140.000000,-1923.625000,0x539b7c44ed2d40c4,0x2daa8cf5e08fb16e,0xd87700809feafff4,0xc2e832153a03b5d7,0.451,0.477156,300516,0,PASS
+1401164998,surface-world,clang19-on,1,27,14,33671,0.000000,-140.000000,-1923.625000,0x539b7c44ed2d40c4,0x2daa8cf5e08fb16e,0xd87700809feafff4,0xc2e832153a03b5d7,0.282,0.297994,85456,0,PASS
+1401164998,surface-world,clang19-on,12,27,14,33671,0.000000,-140.000000,-1923.625000,0x539b7c44ed2d40c4,0x2daa8cf5e08fb16e,0xd87700809feafff4,0xc2e832153a03b5d7,0.448,0.476334,300584,0,PASS
+1401164998,surface-world,gcc14-default,1,27,14,33671,0.000000,-140.000000,-1923.625000,0x539b7c44ed2d40c4,0x2daa8cf5e08fb16e,0xd87700809feafff4,0xc2e832153a03b5d7,0.278,0.294323,85820,0,PASS
+1401164998,surface-world,gcc14-default,12,27,14,33671,0.000000,-140.000000,-1923.625000,0x539b7c44ed2d40c4,0x2daa8cf5e08fb16e,0xd87700809feafff4,0xc2e832153a03b5d7,0.463,0.489660,301300,0,PASS
+1401164998,floating-islands,clang19-off,1,27,12,25478,-25.199219,-76.433594,-133.500000,0xa22b8a0f16d1cb98,0x85e184e7768795d1,0x29a6f8ac91d35e09,0xb778d52817341912,1.889,1.905353,86852,0,PASS
+1401164998,floating-islands,clang19-off,12,27,12,25478,-25.199219,-76.433594,-133.500000,0xa22b8a0f16d1cb98,0x85e184e7768795d1,0x29a6f8ac91d35e09,0xb778d52817341912,0.755,0.783092,299600,0,PASS
+1401164998,floating-islands,clang19-on,1,27,12,25478,-25.199219,-76.433594,-133.500000,0xa22b8a0f16d1cb98,0x85e184e7768795d1,0x29a6f8ac91d35e09,0xb778d52817341912,1.918,1.935211,87012,0,PASS
+1401164998,floating-islands,clang19-on,12,27,12,25478,-25.199219,-76.433594,-133.500000,0xa22b8a0f16d1cb98,0x85e184e7768795d1,0x29a6f8ac91d35e09,0xb778d52817341912,0.747,0.774451,299876,0,PASS
+1401164998,floating-islands,gcc14-default,1,27,12,25478,-25.199219,-76.433594,-133.500000,0xa22b8a0f16d1cb98,0x85e184e7768795d1,0x29a6f8ac91d35e09,0xb778d52817341912,1.962,1.978881,87376,0,PASS
+1401164998,floating-islands,gcc14-default,12,27,12,25478,-25.199219,-76.433594,-133.500000,0xa22b8a0f16d1cb98,0x85e184e7768795d1,0x29a6f8ac91d35e09,0xb778d52817341912,0.773,0.800827,300436,0,PASS
+1558879574,surface-world,clang19-off,1,27,12,30022,0.000000,-140.000000,-2026.257812,0x566bd8e41e9ce9de,0xd7344edfeac99334,0xffbfbdcc9b7796a9,0x0ab334df0eb60fd6,0.178,0.192933,83876,0,PASS
+1558879574,surface-world,clang19-off,12,27,12,30022,0.000000,-140.000000,-2026.257812,0x566bd8e41e9ce9de,0xd7344edfeac99334,0xffbfbdcc9b7796a9,0x0ab334df0eb60fd6,0.430,0.457703,298956,0,PASS
+1558879574,surface-world,clang19-on,1,27,12,30022,0.000000,-140.000000,-2026.257812,0x566bd8e41e9ce9de,0xd7344edfeac99334,0xffbfbdcc9b7796a9,0x0ab334df0eb60fd6,0.176,0.192307,83696,0,PASS
+1558879574,surface-world,clang19-on,12,27,12,30022,0.000000,-140.000000,-2026.257812,0x566bd8e41e9ce9de,0xd7344edfeac99334,0xffbfbdcc9b7796a9,0x0ab334df0eb60fd6,0.413,0.440116,297112,0,PASS
+1558879574,surface-world,gcc14-default,1,27,12,30022,0.000000,-140.000000,-2026.257812,0x566bd8e41e9ce9de,0xd7344edfeac99334,0xffbfbdcc9b7796a9,0x0ab334df0eb60fd6,0.182,0.197351,84408,0,PASS
+1558879574,surface-world,gcc14-default,12,27,12,30022,0.000000,-140.000000,-2026.257812,0x566bd8e41e9ce9de,0xd7344edfeac99334,0xffbfbdcc9b7796a9,0x0ab334df0eb60fd6,0.425,0.451513,299728,0,PASS
+1558879574,floating-islands,clang19-off,1,27,15,37078,0.000000,-15.878906,-116.753906,0x675134538e8ca09b,0x2e32a5444b8be6d7,0xa3945849da18e24a,0xda29fda6f39d36f9,0.864,0.880169,84868,0,PASS
+1558879574,floating-islands,clang19-off,12,27,15,37078,0.000000,-15.878906,-116.753906,0x675134538e8ca09b,0x2e32a5444b8be6d7,0xa3945849da18e24a,0xda29fda6f39d36f9,0.595,0.623192,301320,0,PASS
+1558879574,floating-islands,clang19-on,1,27,15,37078,0.000000,-15.878906,-116.753906,0x675134538e8ca09b,0x2e32a5444b8be6d7,0xa3945849da18e24a,0xda29fda6f39d36f9,0.898,0.914741,84904,0,PASS
+1558879574,floating-islands,clang19-on,12,27,15,37078,0.000000,-15.878906,-116.753906,0x675134538e8ca09b,0x2e32a5444b8be6d7,0xa3945849da18e24a,0xda29fda6f39d36f9,0.576,0.602221,300580,0,PASS
+1558879574,floating-islands,gcc14-default,1,27,15,37078,0.000000,-15.878906,-116.753906,0x675134538e8ca09b,0x2e32a5444b8be6d7,0xa3945849da18e24a,0xda29fda6f39d36f9,0.948,0.964253,85196,0,PASS
+1558879574,floating-islands,gcc14-default,12,27,15,37078,0.000000,-15.878906,-116.753906,0x675134538e8ca09b,0x2e32a5444b8be6d7,0xa3945849da18e24a,0xda29fda6f39d36f9,0.596,0.625674,301684,0,PASS
+1753015542,surface-world,clang19-off,1,27,9,27536,0.000000,-140.000000,-2004.562500,0x3557e0f7c1298c35,0x833da36dd2c02e13,0x656f82e69ccdecc2,0xac9935bb75fdb59c,0.157,0.174474,85136,0,PASS
+1753015542,surface-world,clang19-off,12,27,9,27536,0.000000,-140.000000,-2004.562500,0x3557e0f7c1298c35,0x833da36dd2c02e13,0x656f82e69ccdecc2,0xac9935bb75fdb59c,0.400,0.426649,295468,0,PASS
+1753015542,surface-world,clang19-on,1,27,9,27536,0.000000,-140.000000,-2004.562500,0x3557e0f7c1298c35,0x833da36dd2c02e13,0x656f82e69ccdecc2,0xac9935bb75fdb59c,0.157,0.173307,85120,0,PASS
+1753015542,surface-world,clang19-on,12,27,9,27536,0.000000,-140.000000,-2004.562500,0x3557e0f7c1298c35,0x833da36dd2c02e13,0x656f82e69ccdecc2,0xac9935bb75fdb59c,0.426,0.452773,295640,0,PASS
+1753015542,surface-world,gcc14-default,1,27,9,27536,0.000000,-140.000000,-2004.562500,0x3557e0f7c1298c35,0x833da36dd2c02e13,0x656f82e69ccdecc2,0xac9935bb75fdb59c,0.161,0.180130,85696,0,PASS
+1753015542,surface-world,gcc14-default,12,27,9,27536,0.000000,-140.000000,-2004.562500,0x3557e0f7c1298c35,0x833da36dd2c02e13,0x656f82e69ccdecc2,0xac9935bb75fdb59c,0.404,0.430695,296144,0,PASS
+1753015542,floating-islands,clang19-off,1,27,13,23050,-25.199219,-75.425781,-125.304688,0xd628ec790fd17bd2,0x5602b3e7ed3f852a,0x844b0f983d0a8dcb,0xdef4bef7bdf60b15,1.084,1.099925,85304,0,PASS
+1753015542,floating-islands,clang19-off,12,27,13,23050,-25.199219,-75.425781,-125.304688,0xd628ec790fd17bd2,0x5602b3e7ed3f852a,0x844b0f983d0a8dcb,0xdef4bef7bdf60b15,0.611,0.636921,299408,0,PASS
+1753015542,floating-islands,clang19-on,1,27,13,23050,-25.199219,-75.425781,-125.304688,0xd628ec790fd17bd2,0x5602b3e7ed3f852a,0x844b0f983d0a8dcb,0xdef4bef7bdf60b15,1.100,1.116086,85256,0,PASS
+1753015542,floating-islands,clang19-on,12,27,13,23050,-25.199219,-75.425781,-125.304688,0xd628ec790fd17bd2,0x5602b3e7ed3f852a,0x844b0f983d0a8dcb,0xdef4bef7bdf60b15,0.615,0.646016,299692,0,PASS
+1753015542,floating-islands,gcc14-default,1,27,13,23050,-25.199219,-75.425781,-125.304688,0xd628ec790fd17bd2,0x5602b3e7ed3f852a,0x844b0f983d0a8dcb,0xdef4bef7bdf60b15,1.222,1.237954,85648,0,PASS
+1753015542,floating-islands,gcc14-default,12,27,13,23050,-25.199219,-75.425781,-125.304688,0xd628ec790fd17bd2,0x5602b3e7ed3f852a,0x844b0f983d0a8dcb,0xdef4bef7bdf60b15,0.638,0.665451,300048,0,PASS
+1827697875,surface-world,clang19-off,1,27,12,29182,0.000000,-140.000000,-2018.507812,0xd945dc9d11f16156,0x59cd0f8103174807,0xbeae510e83e10bb9,0xe561cd4f1b5fc4a0,0.176,0.193003,86328,0,PASS
+1827697875,surface-world,clang19-off,12,27,12,29182,0.000000,-140.000000,-2018.507812,0xd945dc9d11f16156,0x59cd0f8103174807,0xbeae510e83e10bb9,0xe561cd4f1b5fc4a0,0.404,0.432768,301456,0,PASS
+1827697875,surface-world,clang19-on,1,27,12,29182,0.000000,-140.000000,-2018.507812,0xd945dc9d11f16156,0x59cd0f8103174807,0xbeae510e83e10bb9,0xe561cd4f1b5fc4a0,0.168,0.184638,86524,0,PASS
+1827697875,surface-world,clang19-on,12,27,12,29182,0.000000,-140.000000,-2018.507812,0xd945dc9d11f16156,0x59cd0f8103174807,0xbeae510e83e10bb9,0xe561cd4f1b5fc4a0,0.403,0.430151,301156,0,PASS
+1827697875,surface-world,gcc14-default,1,27,12,29182,0.000000,-140.000000,-2018.507812,0xd945dc9d11f16156,0x59cd0f8103174807,0xbeae510e83e10bb9,0xe561cd4f1b5fc4a0,0.171,0.187425,86968,0,PASS
+1827697875,surface-world,gcc14-default,12,27,12,29182,0.000000,-140.000000,-2018.507812,0xd945dc9d11f16156,0x59cd0f8103174807,0xbeae510e83e10bb9,0xe561cd4f1b5fc4a0,0.404,0.431313,301904,0,PASS
+1827697875,floating-islands,clang19-off,1,27,11,34624,0.000000,-19.441406,-116.312500,0x786671c16ae75f4f,0x2c0c94465b7da251,0x6bad3e5799515fde,0x7ff03f198fd07c37,1.637,1.653412,90444,0,PASS
+1827697875,floating-islands,clang19-off,12,27,11,34624,0.000000,-19.441406,-116.312500,0x786671c16ae75f4f,0x2c0c94465b7da251,0x6bad3e5799515fde,0x7ff03f198fd07c37,0.721,0.749622,306368,0,PASS
+1827697875,floating-islands,clang19-on,1,27,11,34624,0.000000,-19.441406,-116.312500,0x786671c16ae75f4f,0x2c0c94465b7da251,0x6bad3e5799515fde,0x7ff03f198fd07c37,1.650,1.665968,90588,0,PASS
+1827697875,floating-islands,clang19-on,12,27,11,34624,0.000000,-19.441406,-116.312500,0x786671c16ae75f4f,0x2c0c94465b7da251,0x6bad3e5799515fde,0x7ff03f198fd07c37,0.694,0.721945,306148,0,PASS
+1827697875,floating-islands,gcc14-default,1,27,11,34624,0.000000,-19.441406,-116.312500,0x786671c16ae75f4f,0x2c0c94465b7da251,0x6bad3e5799515fde,0x7ff03f198fd07c37,2.219,2.236609,90628,0,PASS
+1827697875,floating-islands,gcc14-default,12,27,11,34624,0.000000,-19.441406,-116.312500,0x786671c16ae75f4f,0x2c0c94465b7da251,0x6bad3e5799515fde,0x7ff03f198fd07c37,0.725,0.753570,306580,0,PASS
+1909311298,surface-world,clang19-off,1,27,13,28862,0.000000,-140.000000,-2007.000000,0x79cb6cf093ee2d27,0xa818f8c1904f73b0,0x529738f49021b6e2,0x22bd170f9b244b7c,0.181,0.196690,83948,0,PASS
+1909311298,surface-world,clang19-off,12,27,13,28862,0.000000,-140.000000,-2007.000000,0x79cb6cf093ee2d27,0xa818f8c1904f73b0,0x529738f49021b6e2,0x22bd170f9b244b7c,0.414,0.439403,298828,0,PASS
+1909311298,surface-world,clang19-on,1,27,13,28862,0.000000,-140.000000,-2007.000000,0x79cb6cf093ee2d27,0xa818f8c1904f73b0,0x529738f49021b6e2,0x22bd170f9b244b7c,0.183,0.197951,84020,0,PASS
+1909311298,surface-world,clang19-on,12,27,13,28862,0.000000,-140.000000,-2007.000000,0x79cb6cf093ee2d27,0xa818f8c1904f73b0,0x529738f49021b6e2,0x22bd170f9b244b7c,0.418,0.445146,297192,0,PASS
+1909311298,surface-world,gcc14-default,1,27,13,28862,0.000000,-140.000000,-2007.000000,0x79cb6cf093ee2d27,0xa818f8c1904f73b0,0x529738f49021b6e2,0x22bd170f9b244b7c,0.179,0.194761,84464,0,PASS
+1909311298,surface-world,gcc14-default,12,27,13,28862,0.000000,-140.000000,-2007.000000,0x79cb6cf093ee2d27,0xa818f8c1904f73b0,0x529738f49021b6e2,0x22bd170f9b244b7c,0.414,0.441193,299492,0,PASS
+1909311298,floating-islands,clang19-off,1,27,12,22040,-39.199219,18.164062,-122.738281,0x7bdc9a6cccc15b70,0x14e5e1428a1a5543,0x9b01cc95b7b3358d,0xd049ccb5663e4449,1.229,1.245451,85180,0,PASS
+1909311298,floating-islands,clang19-off,12,27,12,22040,-39.199219,18.164062,-122.738281,0x7bdc9a6cccc15b70,0x14e5e1428a1a5543,0x9b01cc95b7b3358d,0xd049ccb5663e4449,0.658,0.685935,299900,0,PASS
+1909311298,floating-islands,clang19-on,1,27,12,22040,-39.199219,18.164062,-122.738281,0x7bdc9a6cccc15b70,0x14e5e1428a1a5543,0x9b01cc95b7b3358d,0xd049ccb5663e4449,1.261,1.277763,85712,0,PASS
+1909311298,floating-islands,clang19-on,12,27,12,22040,-39.199219,18.164062,-122.738281,0x7bdc9a6cccc15b70,0x14e5e1428a1a5543,0x9b01cc95b7b3358d,0xd049ccb5663e4449,0.650,0.678722,299884,0,PASS
+1909311298,floating-islands,gcc14-default,1,27,12,22040,-39.199219,18.164062,-122.738281,0x7bdc9a6cccc15b70,0x14e5e1428a1a5543,0x9b01cc95b7b3358d,0xd049ccb5663e4449,1.358,1.374066,86140,0,PASS
+1909311298,floating-islands,gcc14-default,12,27,12,22040,-39.199219,18.164062,-122.738281,0x7bdc9a6cccc15b70,0x14e5e1428a1a5543,0x9b01cc95b7b3358d,0xd049ccb5663e4449,0.694,0.722178,300560,0,PASS
+2011898099,surface-world,clang19-off,1,27,9,28654,0.000000,-140.000000,-2005.066406,0x95f389e603d74998,0xff02d8e0b112c865,0xd5d0a255cb1b18be,0x1138243eba6d47a9,0.171,0.187716,86176,0,PASS
+2011898099,surface-world,clang19-off,12,27,9,28654,0.000000,-140.000000,-2005.066406,0x95f389e603d74998,0xff02d8e0b112c865,0xd5d0a255cb1b18be,0x1138243eba6d47a9,0.430,0.457289,296284,0,PASS
+2011898099,surface-world,clang19-on,1,27,9,28654,0.000000,-140.000000,-2005.066406,0x95f389e603d74998,0xff02d8e0b112c865,0xd5d0a255cb1b18be,0x1138243eba6d47a9,0.164,0.180262,85708,0,PASS
+2011898099,surface-world,clang19-on,12,27,9,28654,0.000000,-140.000000,-2005.066406,0x95f389e603d74998,0xff02d8e0b112c865,0xd5d0a255cb1b18be,0x1138243eba6d47a9,0.421,0.448994,296448,0,PASS
+2011898099,surface-world,gcc14-default,1,27,9,28654,0.000000,-140.000000,-2005.066406,0x95f389e603d74998,0xff02d8e0b112c865,0xd5d0a255cb1b18be,0x1138243eba6d47a9,0.162,0.178213,86360,0,PASS
+2011898099,surface-world,gcc14-default,12,27,9,28654,0.000000,-140.000000,-2005.066406,0x95f389e603d74998,0xff02d8e0b112c865,0xd5d0a255cb1b18be,0x1138243eba6d47a9,0.412,0.438827,296832,0,PASS
+2011898099,floating-islands,clang19-off,1,27,9,21292,39.199219,18.968750,-106.898438,0xb3ad433a09a0d127,0xdea39968a98e0861,0x53948649c6b2beee,0x908898f1ffc5bd9b,1.189,1.205816,88312,0,PASS
+2011898099,floating-islands,clang19-off,12,27,9,21292,39.199219,18.968750,-106.898438,0xb3ad433a09a0d127,0xdea39968a98e0861,0x53948649c6b2beee,0x908898f1ffc5bd9b,0.603,0.630257,302380,0,PASS
+2011898099,floating-islands,clang19-on,1,27,9,21292,39.199219,18.968750,-106.898438,0xb3ad433a09a0d127,0xdea39968a98e0861,0x53948649c6b2beee,0x908898f1ffc5bd9b,1.159,1.174149,88360,0,PASS
+2011898099,floating-islands,clang19-on,12,27,9,21292,39.199219,18.968750,-106.898438,0xb3ad433a09a0d127,0xdea39968a98e0861,0x53948649c6b2beee,0x908898f1ffc5bd9b,0.618,0.645079,302396,0,PASS
+2011898099,floating-islands,gcc14-default,1,27,9,21292,39.199219,18.968750,-106.898438,0xb3ad433a09a0d127,0xdea39968a98e0861,0x53948649c6b2beee,0x908898f1ffc5bd9b,1.289,1.305695,88604,0,PASS
+2011898099,floating-islands,gcc14-default,12,27,9,21292,39.199219,18.968750,-106.898438,0xb3ad433a09a0d127,0xdea39968a98e0861,0x53948649c6b2beee,0x908898f1ffc5bd9b,0.656,0.682775,302628,0,PASS
+2015768509,surface-world,clang19-off,1,27,18,51706,0.000000,-140.000000,-1918.304688,0x9506739f358ba5c5,0xaba43fe9407d51fb,0xb75c6eb38dcff774,0x76ccbd695880c541,0.325,0.339879,84052,0,PASS
+2015768509,surface-world,clang19-off,12,27,18,51706,0.000000,-140.000000,-1918.304688,0x9506739f358ba5c5,0xaba43fe9407d51fb,0xb75c6eb38dcff774,0x76ccbd695880c541,0.462,0.488815,300564,0,PASS
+2015768509,surface-world,clang19-on,1,27,18,51706,0.000000,-140.000000,-1918.304688,0x9506739f358ba5c5,0xaba43fe9407d51fb,0xb75c6eb38dcff774,0x76ccbd695880c541,0.327,0.342810,84232,0,PASS
+2015768509,surface-world,clang19-on,12,27,18,51706,0.000000,-140.000000,-1918.304688,0x9506739f358ba5c5,0xaba43fe9407d51fb,0xb75c6eb38dcff774,0x76ccbd695880c541,0.463,0.489510,300696,0,PASS
+2015768509,surface-world,gcc14-default,1,27,18,51706,0.000000,-140.000000,-1918.304688,0x9506739f358ba5c5,0xaba43fe9407d51fb,0xb75c6eb38dcff774,0x76ccbd695880c541,0.316,0.332179,84352,0,PASS
+2015768509,surface-world,gcc14-default,12,27,18,51706,0.000000,-140.000000,-1918.304688,0x9506739f358ba5c5,0xaba43fe9407d51fb,0xb75c6eb38dcff774,0x76ccbd695880c541,0.461,0.488549,301088,0,PASS
+2015768509,floating-islands,clang19-off,1,27,11,29426,39.199219,20.148438,-111.468750,0x92d4f0690eaa02fd,0x5cea2b8d8ae9a094,0xc520e4594055d037,0x1f0f86bd23a0ade4,1.597,1.614573,85204,0,PASS
+2015768509,floating-islands,clang19-off,12,27,11,29426,39.199219,20.148438,-111.468750,0x92d4f0690eaa02fd,0x5cea2b8d8ae9a094,0xc520e4594055d037,0x1f0f86bd23a0ade4,0.755,0.784367,300176,0,PASS
+2015768509,floating-islands,clang19-on,1,27,11,29426,39.199219,20.148438,-111.468750,0x92d4f0690eaa02fd,0x5cea2b8d8ae9a094,0xc520e4594055d037,0x1f0f86bd23a0ade4,1.623,1.646497,85312,0,PASS
+2015768509,floating-islands,clang19-on,12,27,11,29426,39.199219,20.148438,-111.468750,0x92d4f0690eaa02fd,0x5cea2b8d8ae9a094,0xc520e4594055d037,0x1f0f86bd23a0ade4,0.734,0.761770,300316,0,PASS
+2015768509,floating-islands,gcc14-default,1,27,11,29426,39.199219,20.148438,-111.468750,0x92d4f0690eaa02fd,0x5cea2b8d8ae9a094,0xc520e4594055d037,0x1f0f86bd23a0ade4,1.884,1.901163,85704,0,PASS
+2015768509,floating-islands,gcc14-default,12,27,11,29426,39.199219,20.148438,-111.468750,0x92d4f0690eaa02fd,0x5cea2b8d8ae9a094,0xc520e4594055d037,0x1f0f86bd23a0ade4,0.782,0.808616,300972,0,PASS
+2070776516,surface-world,clang19-off,1,27,10,26952,0.000000,-140.000000,-2010.421875,0x28df1e26bab2140f,0x4af65af7af7045c3,0x9832cc0f7fef9416,0xcc5b3fd5040e7c87,0.192,0.206509,84096,0,PASS
+2070776516,surface-world,clang19-off,12,27,10,26952,0.000000,-140.000000,-2010.421875,0x28df1e26bab2140f,0x4af65af7af7045c3,0x9832cc0f7fef9416,0xcc5b3fd5040e7c87,0.437,0.465311,295796,0,PASS
+2070776516,surface-world,clang19-on,1,27,10,26952,0.000000,-140.000000,-2010.421875,0x28df1e26bab2140f,0x4af65af7af7045c3,0x9832cc0f7fef9416,0xcc5b3fd5040e7c87,0.193,0.209540,83692,0,PASS
+2070776516,surface-world,clang19-on,12,27,10,26952,0.000000,-140.000000,-2010.421875,0x28df1e26bab2140f,0x4af65af7af7045c3,0x9832cc0f7fef9416,0xcc5b3fd5040e7c87,0.456,0.482411,295584,0,PASS
+2070776516,surface-world,gcc14-default,1,27,10,26952,0.000000,-140.000000,-2010.421875,0x28df1e26bab2140f,0x4af65af7af7045c3,0x9832cc0f7fef9416,0xcc5b3fd5040e7c87,0.190,0.206251,84608,0,PASS
+2070776516,surface-world,gcc14-default,12,27,10,26952,0.000000,-140.000000,-2010.421875,0x28df1e26bab2140f,0x4af65af7af7045c3,0x9832cc0f7fef9416,0xcc5b3fd5040e7c87,0.453,0.479961,296012,0,PASS
+2070776516,floating-islands,clang19-off,1,27,8,15728,39.199219,16.496094,-110.636719,0x486603470bf1e852,0xaa6022efbc268013,0xd3227a7e0b6e8b9e,0xefb848cb7eb47d5c,1.112,1.128854,86188,0,PASS
+2070776516,floating-islands,clang19-off,12,27,8,15728,39.199219,16.496094,-110.636719,0x486603470bf1e852,0xaa6022efbc268013,0xd3227a7e0b6e8b9e,0xefb848cb7eb47d5c,0.567,0.594910,299448,0,PASS
+2070776516,floating-islands,clang19-on,1,27,8,15728,39.199219,16.496094,-110.636719,0x486603470bf1e852,0xaa6022efbc268013,0xd3227a7e0b6e8b9e,0xefb848cb7eb47d5c,1.115,1.131163,86004,0,PASS
+2070776516,floating-islands,clang19-on,12,27,8,15728,39.199219,16.496094,-110.636719,0x486603470bf1e852,0xaa6022efbc268013,0xd3227a7e0b6e8b9e,0xefb848cb7eb47d5c,0.613,0.639860,299736,0,PASS
+2070776516,floating-islands,gcc14-default,1,27,8,15728,39.199219,16.496094,-110.636719,0x486603470bf1e852,0xaa6022efbc268013,0xd3227a7e0b6e8b9e,0xefb848cb7eb47d5c,1.167,1.183633,86500,0,PASS
+2070776516,floating-islands,gcc14-default,12,27,8,15728,39.199219,16.496094,-110.636719,0x486603470bf1e852,0xaa6022efbc268013,0xd3227a7e0b6e8b9e,0xefb848cb7eb47d5c,0.637,0.663327,300240,0,PASS

Standalone/Research/WorldAssemblerM3/Linux3/seed_mesh_coverage_per_seed.csv

@@ -0,0 +1,97 @@
+seed,recipe,camera_x_vox,camera_y_vox,camera_z_vox,nonempty_mesh_tiles,indexed_triangles,density_hash,mesh_hash
+-1990830953,floating-islands,-39.199219,16.363281,-121.039062,12,23386,0xc04ef8acd44d8736,0x00e92c97d841dfe5
+-1900684165,floating-islands,39.199219,17.675781,-116.339844,10,23186,0xfc7386c15431e2e1,0x46ce25dfb3745f53
+-1766412538,floating-islands,-25.199219,-73.816406,-135.394531,12,23618,0xdb6557b98f29060e,0x3b3147a1d020ca02
+-1721984596,floating-islands,64.398438,74.085938,-128.433594,10,23728,0xbb7777932cd3328a,0x5d7243f5afb8902a
+-1239598758,floating-islands,39.199219,19.425781,-116.691406,12,28162,0x9ee03f2326224bbc,0x0ea03da61381b41a
+-1085993262,floating-islands,-39.199219,16.968750,-116.531250,11,25186,0x8dec867557d4e27c,0x13de3a8f9465573d
+-1033703345,floating-islands,-25.199219,-75.605469,-128.097656,10,17406,0x6edfcf6b89aee9cd,0xc7b92cd1b8a58590
+-854671705,floating-islands,0.000000,-19.800781,-116.507812,13,39000,0xbb5718ca3ad4c181,0x3250d2591365d443
+-713963806,floating-islands,64.398438,74.308594,-120.453125,8,16002,0xd590c16395cc515f,0x3a62d63b76bdd260
+-621039221,floating-islands,0.000000,-18.796875,-116.769531,15,46224,0x8bf4ceae8c1ddbf6,0x61557967c37529fe
+-474448608,floating-islands,-39.199219,20.921875,-121.671875,12,26122,0x2a634b2a3d2e38ef,0x52d2036bf1406614
+-432690581,floating-islands,-39.199219,16.421875,-114.292969,7,20532,0xd8b65942bf1c005c,0xe6557b8cadfb3356
+-380556572,floating-islands,39.199219,17.386719,-117.285156,10,25334,0x118f50002e1af1b1,0x57d82fed86d7545c
+-238925630,floating-islands,-39.199219,16.394531,-123.812500,10,20680,0x36a07bf8d4383533,0x12f59de7f06e5270
+-216679974,floating-islands,39.199219,20.230469,-108.953125,9,25284,0x79bb86763243b67e,0x7fd748d3021d506d
+-133096164,floating-islands,-39.199219,16.050781,-118.000000,11,26248,0xad7be7cd6b0dbffc,0x06d2caf87f019f22
+-112366806,floating-islands,39.199219,16.867188,-114.605469,9,21148,0xda065c33dc944d23,0x3c27d1ee8688fec9
+0,floating-islands,-25.199219,-76.226562,-105.089844,9,20740,0x7fd1e3389642e6f6,0x577e52a5ba8d96be
+5808593,floating-islands,39.199219,16.003906,-114.574219,10,21000,0xb96bffb27bc457e0,0x1f867a2add682123
+28573228,floating-islands,0.000000,-18.683594,-116.187500,12,32456,0x25ed5f499f9bf7ab,0x1c8e67c20374b473
+70955227,floating-islands,-39.199219,18.582031,-121.785156,12,17426,0xbe4b9c0ebadde344,0xa9a52cc49ade0f23
+75274690,floating-islands,64.398438,72.199219,-121.019531,8,19760,0x045c98172a573800,0x86618a983d61425d
+81375760,floating-islands,-39.199219,20.589844,-119.359375,12,24146,0x69b66261833e4676,0x75e6b0f427e7698a
+146979566,floating-islands,39.199219,16.625000,-109.785156,9,22370,0x93d0d67042bb05d2,0xe7f4981f907e316e
+244951180,floating-islands,0.000000,-18.179688,-116.664062,13,32272,0x0b22965681c5b482,0x582ef8c1d263bedb
+245433414,floating-islands,0.000000,-17.574219,-116.296875,11,32838,0x2e75a175d1005e4e,0x8f45449d7125c041
+277442974,floating-islands,39.199219,19.328125,-117.750000,13,28088,0x8cb55c56b1629d42,0xc6532d9d3b8a987d
+297746112,floating-islands,39.199219,20.609375,-119.089844,15,29396,0x2425273f1a174c04,0x204be5cda8d98412
+336768467,floating-islands,0.000000,-20.933594,-116.355469,12,33652,0xfa8249483c186760,0xc42acd7c93e1525c
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Standalone/Research/WorldAssemblerM3/Linux3/seed_mesh_coverage_summary.txt

@@ -0,0 +1 @@
+runs=576 seeds=48 recipes=2 builds=3 workers=1,12 cross_build_checks=192 cross_build_mismatches=0 worker_checks=288 worker_mismatches=0 empty_mesh_rows=0 max_peak_rss_kib=306580 elapsed_s=432.977

Standalone/Research/WorldAssemblerM3/Linux4/REPORT.md

@@ -0,0 +1,114 @@
+# WorldAssemblerM3 Linux4 — lazy worker caches
+
+## Change
+
+Added `VoxelForgeCoreThreadLocal::FLazy<T>`: each cache now has a thread-local pointer, allocates its private table on first use, and deletes it when that thread exits. The same helper is used by the namespaced Core and legacy source copies. No cache locks or cross-thread cache sharing were added. The L3 FP-contract preamble and self-test are unchanged.
+
+The change covers the heightfield and island caches in Core, plus the large surface, relief, room-graph, tunnel-density, and diff caches in the shared generator sources. Tunnel-density lookup is now restricted to its `TunnelNetwork` and `Underwater` routes, which are the only routes that populate that table. The standalone TLS probe reports spawn time, RSS and per-thread minor faults, and can touch synthetic SurfaceWorld or FloatingIslands samples. Worker stacks are now 8 MiB.
+
+## Where the baseline TLS came from
+
+Sizes are from the S14 / `046f2af` Clang binary's TLS symbols. The two raw and namespaced source copies are both linked into the standalone executable; both occupy TLS even though a Core call uses the namespaced copy and the legacy/reference route uses the raw copy. The raw legacy cache is not used by the Core API route. `Standalone/Core/core_sources.txt` describes this dual build.
+
+| Cache | Section | Bytes per copy | Copies | Total bytes | Route / use |
+|---|---:|---:|---:|---:|---|
+| `HeightfieldColumnCache` | `.tbss` | 6,815,744 | 1 | 6,815,744 | Core SurfaceWorld height samples; S14 hot path, any LOD that queries the heightfield |
+| `GFloorReliefCache` | `.tdata` | 1,310,720 | 2 | 2,621,440 | Cave room/tunnel/landing floor-relief queries |
+| `GRoomGraphCache` | `.tdata` | 970,752 | 2 | 1,941,504 | Room-graph SDF windows; fine/coarse region banks |
+| `GSurfColCache` | `.tbss` | 827,000 | 2 | 1,654,000 | `ClassifyTile` surface-column pass; classifier is opt-in in runtime streaming |
+| `FSurfaceColumnSource` column table | `.tbss` | 826,856 | 2 | 1,653,712 | Surface operator-stack integer XY columns |
+| `PassageReliefCache` | `.tdata` | 655,360 | 2 | 1,310,720 | Passage-relief samples when that feature is queried |
+| `IslandColumnCache` | `.tbss` | 1,114,112 | 1 | 1,114,112 | Core FloatingIslands column density, all LOD sample paths |
+| `CP_TunnelDensityCache` | `.tbss` | 401,408 | 2 | 802,816 | Native TunnelNetwork/Underwater density chunks |
+| `RootLobeCache` | `.tdata` | 155,648 | 1 | 155,648 | Core FloatingIslands root density |
+| `HeightfieldColumnCacheNextWay` | `.tbss` | 16,384 | 1 | 16,384 | Heightfield cache replacement metadata |
+| `DiffSlots` | `.tdata` | 10,752 | 2 | 21,504 | Only when a sampled chunk has player modifications |
+| `RoomGraphCacheSlots` | `.tdata` | 10,240 | 2 | 20,480 | Room-graph generator route |
+
+The listed `.tdata` cache symbols total 6,071,296 bytes of the 6,093,024-byte image; the remaining 21,728 bytes are small TLS state. Their nonzero defaults explain the initialized image: for example, room-graph keys start at `INT32_MIN` / `0xFFFFFFFF`, passage and floor-relief keys use `INDEX_NONE`, diff slots use `INT32_MAX` chunk coordinates, and root-lobe radii default to `1.0`. Zero-default large arrays such as the heightfield and island column tables account for the listed `.tbss` bytes. The listed `.tbss` symbols total 12,056,768 bytes; 21,997 bytes remain for small TLS state and alignment.
+
+The caches have no universal per-LOD allocation: a thread allocates a table only if it reaches that route. Heightfield and island tables are keyed by recipe/plan or island identity and sampled coordinates; surface columns can be reused by repeated XY queries. Room-graph and classifier paths carry region/tile data in their keys, so coarse and fine requests can occupy distinct entries. Relief, tunnel and diff caches are likewise conditional on those features or modified chunks. All preserve the existing thread-local ownership and eviction behavior.
+
+## TLS and per-thread cost
+
+`PT_TLS` was read with `readelf -lW`. The baseline is the committed `046f2af` build; the after builds use this tree.
+
+| Build | `PT_TLS` FileSiz (initialized) | `PT_TLS` MemSiz (per-thread block) |
+|---|---:|---:|
+| Clang 19 before | 6,093,024 B (5.81 MiB) | 18,171,789 B (17.33 MiB) |
+| Clang 19 after | 21,728 B (21.2 KiB) | 43,977 B (42.95 KiB) |
+| GCC 14 before | 6,060,396 B (5.78 MiB) | 18,172,504 B (17.33 MiB) |
+| GCC 14 after | 9,580 B (9.36 KiB) | 44,696 B (43.65 KiB) |
+
+Serial 12-worker no-touch, SurfaceWorld, and FloatingIslands probes compared baseline and L4. Spawn timing and resident delta use 32 MiB stacks on both sides to isolate TLS cost; the separately tested L4 tool uses 8 MiB stacks. Spawn medians/ranges use the per-worker samples; first-touch fault medians/ranges use each worker's `getrusage(RUSAGE_THREAD)` delta.
+
+| Measurement | Before | After |
+|---|---:|---:|
+| Median time to start one worker | 5.175 ms | 0.119 ms |
+| Median RSS added per new worker, no cache query | 17,756 KiB | 52 KiB |
+| 12-worker no-touch probe peak RSS | 268,168 KiB | 32,328 KiB |
+| First SurfaceWorld use: RSS increase per worker | 20 KiB | 6,691 KiB |
+| First SurfaceWorld use: minor faults per worker | median 1 (range 1–4) | median 331 (range 8–649) |
+| First FloatingIslands use: RSS increase per worker | 27–30 KiB | 1,283 KiB |
+| First FloatingIslands use: minor faults per worker | median 0 (range 0–7) | median 314 (range 313–319) |
+
+The baseline's first-use deltas are small because its large static TLS cost was already incurred at worker creation. After L4, a SurfaceWorld first use adds about 6.54 MiB per worker, while a FloatingIslands first use adds about 1.25 MiB. The no-touch worker increase is about 99.7% lower. These first-use probes call Core directly with four synthetic samples per worker; the full-view benchmark below measures the hot generation path.
+
+The baseline binary's first `pthread_create` with an 8 MiB worker stack fails with `pthread_create: Invalid argument`; the 17.33 MiB static TLS block cannot fit that stack configuration. Baseline probes succeeded with 32 MiB stacks. L4 passed the 8 MiB worker-stack probe and the L1 checks, so the 32 MiB wrapper is no longer needed. Keep the normal 8 MiB worker stack; these runs provide no reason to retain 32 MiB as a safety margin.
+
+## Generation speed and output
+
+Three interleaved W12 whole-view runs per binary used the 2,553-tile L1 view. `Before` is the exact `046f2af` Clang-off executable.
+
+| Build | Whole-view times | Median (range) |
+|---|---|---:|
+| `046f2af` baseline | 2.347, 2.399, 2.432 s | 2.399 s (2.347–2.432) |
+| L4 Clang 19 off | 2.139, 2.197, 2.207 s | 2.197 s (2.139–2.207) |
+
+L4 is 0.202 s (8.4%) faster at the median; no generation-speed regression was measured. The speed runs also changed the worker stack from 32 to 8 MiB, so the timing difference is not attributed solely to the cache indirection. Peak process RSS was 550,856 KiB before and 410,052 KiB after.
+
+The L1 hashes match at W1 and W12 for both requested compiler settings:
+
+| Build | Density / mesh / payload / topology |
+|---|---|
+| Clang 19 off, W1 and W12 | `c10697a8f48380c7 / e75c9119a1498cd5 / 49a9a8d1835a6c8c / edcb23288b5e8724` |
+| GCC 14 default, W1 and W12 | same |
+
+FloatingIslands seed 0 also matches at W1 and W12: `7fd1e3389642e6f6 / 577e52a5ba8d96be / 7c6ffe9f5bbbb450 / b4d308de116f4657` (density / mesh / payload / topology). It covers 27 tiles, with 9 nonempty mesh tiles and 20,740 indexed triangles; the existing L3 seed-0 hashes match.
+
+## Unreal Linux TLS: documented and inferred
+
+**Documented by glibc:** Its dynamic-linker guidance describes the `dlopen`/TLS compatibility issue and recommends global-dynamic TLS for general shared-object use. In glibc's current `dl-tls.c`, DTV slots for dynamically loaded TLS modules are marked for deferred allocation; `tls_get_addr_tail` performs the allocation when that thread first resolves the TLS address. The new-thread path calls `_dl_allocate_tls_init`, which also records deferred allocation for dynamically loaded modules. Thus, for the dynamic path, the large module block is allocated on first access, per thread that touches the module; a thread that never accesses it does not get that module's payload block. [glibc dynamic-linker guidance](https://www.sourceware.org/glibc/manual/latest/html_node/Dynamic-Linker-Hardening.html), [glibc TLS implementation](https://codebrowser.dev/glibc/glibc/elf/dl-tls.c.html#L599), [glibc thread creation path](https://codebrowser.dev/glibc/glibc/nptl/allocatestack.c.html#L141).
+
+**Inference for Unreal:** This machine did not build or inspect the owner's UE `.so`, so the Core module's TLS model and load timing are unverified. GCC documents global-dynamic as the default model with `-fPIC`, but compiler/linker relaxation and UBT's exact flags can change the emitted access sequence. If Unreal loads Core after engine threads exist and the module uses general-dynamic TLS, any engine thread that first accesses a Core TLS symbol can incur the module's whole static TLS block once; it is not limited to generation workers. The L4 pointer handles reduce that block to about 43 KiB, with each large cache allocated only when its own route runs. Verify the actual `.so` `PT_TLS`, TLS relocations, and UBT compile commands on the owner's Linux build; `LD_DEBUG=tls` can show loader TLS activity. [GCC TLS model options](https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options).
+
+## Windows/MSVC to-do
+
+1. Build the updated standalone: `powershell -ExecutionPolicy Bypass -File Standalone\Build.ps1 -Target All -CompileWorkers 12`. Confirm the Core response file still carries `/fp:precise` and the shared header is included.
+2. Run the L1 view at W1 and W12 with `--world-assembler-prototype --stream-benchmark --stream-pipeline --stream-hash --force-generate --clip-radius=3 --max-clip-level=8 --camera=0,-35,-487.94,0,-22 --far-horizon-lod8-step=0`. Require the four L1 hashes above and no self-test error.
+3. Run the seed-0 FloatingIslands check at W1 and W12 with mesh coverage enabled; require matching density/mesh/payload/topology hashes and nonempty mesh coverage.
+4. Build the owner's UE 5.7 Windows target with the plugin, inspect the actual `cl.exe` options, and exercise worker creation/use/shutdown. MSVC-specific risks are `/fp:precise` versus any `/fp:fast` or `/fp:contract` override, `thread_local` destructor handling on engine task threads, and allocator/container construction and destruction when a thread first touches or exits a cache. Linux ELF sizes do not predict Windows TLS costs.
+
+## Machine and run record
+
+Builds and benchmarks used CPUs 0–11, at most 12 build jobs, a 6 GiB address-space limit, and normal priority. Governor remained `powersave`; EPP remained `balance_performance`. Clang build: 29.06 s, peak RSS 431,732 KiB. GCC build: 46.14 s, peak RSS 896,076 KiB. Largest benchmark RSS was 550,856 KiB. Logs are in `Saved/Linux/linux4-*.log`; artifacts are under `Standalone/Build/linux-*` and `Standalone/bin/linux/`.
+
+Failed or retried runs:
+
+- The first baseline probes with an 8 MiB worker stack failed for `none`, `surface-world`, and `floating-islands` (`pthread_create: Invalid argument`, exit `-6`, three attempts each). They were rerun serially at 32 MiB and passed. L4 passed all three probes at 8 MiB.
+- An early before/after probe batch ran the six probe types concurrently, so its timings and RSS were discarded. Each type was rerun serially; the final before/after comparison uses those serial logs. The discarded logs are retained with `linux4-discarded-parallel-` names.
+- No build or world/hash run failed. Both Clang and GCC final builds succeeded.
+
+## Note for the owner
+
+The shared cache change reduces standalone static TLS from 17.33 MiB to about 43 KiB and preserves the L1 and FloatingIslands hashes; the W12 median moved from 2.399 s to 2.197 s. Please run the listed standalone and Unreal checks on Windows/MSVC before merging, especially worker-thread TLS destruction and the actual UBT FP/TLS options.
+
+## Orchestrator review (Claude)
+
+- Re-run by me: interleaved W12, L1 view: `046f2af` (L3) 2.212/2.256/2.307 s vs L4 2.063/2.091/2.125 s
+  (medians 2.256 → 2.091 s, -7%). Density `c10697a8f48380c7` throughout. L4 `PT_TLS` MemSiz 0xabc9 = 43,977 B.
+- Checked the tunnel-cache route gate in `VoxelGenerator.cpp`: entries are only *stored* when `CP_GenType`
+  is TunnelNetwork/Underwater, so for any other route the old lookup could only miss. Gating skips
+  guaranteed misses, so no output change is possible. The legacy cave route is not exercised by the
+  headless tool, so this rests on code reading, not a hash.
+- Windows: `thread_local` destructors on UE task threads are the MSVC risk. Luna's to-do list covers it.

Standalone/Research/WorldAssemblerM3/Linux4/TlsProbeMain.cpp

@@ -0,0 +1,11 @@
+#include "StandaloneTlsProbe.h"
+
+#include <cstdlib>
+#include <string_view>
+
+int main(int argc,char** argv)
+{
+    const int workers=argc>1?std::atoi(argv[1]):12;
+    const std::string_view touch=argc>2?argv[2]:"none";
+    return StandaloneTlsProbe::Run(workers,touch);
+}

Standalone/Research/WorldAssemblerM3/Linux5/MeasureProcess.py

@@ -0,0 +1,80 @@
+#!/usr/bin/env python3
+import os
+import signal
+import subprocess
+import sys
+import time
+
+if len(sys.argv) < 4 or sys.argv[2] != "--":
+    raise SystemExit("usage: MeasureProcess.py LOG -- COMMAND [ARGS...]")
+
+log_path = sys.argv[1]
+command = sys.argv[3:]
+os.makedirs(os.path.dirname(log_path) or ".", exist_ok=True)
+start = time.monotonic()
+with open(log_path, "wb") as log_file:
+    process = subprocess.Popen(command, stdout=log_file, stderr=subprocess.STDOUT,
+                               start_new_session=True)
+    max_hwm_kib = 0
+    max_rss_kib = 0
+    max_pid = process.pid
+    max_name = ""
+    deadline = start + 1800.0
+    while process.poll() is None:
+        if time.monotonic() >= deadline:
+            os.killpg(process.pid, signal.SIGTERM)
+            try:
+                process.wait(timeout=10)
+            except subprocess.TimeoutExpired:
+                os.killpg(process.pid, signal.SIGKILL)
+                process.wait()
+            print("MONITOR_TIMEOUT_SECONDS=1800", file=log_file, flush=True)
+            break
+        stat_by_pid = {}
+        for entry in os.scandir("/proc"):
+            if not entry.name.isdigit():
+                continue
+            pid = int(entry.name)
+            try:
+                with open(f"/proc/{pid}/stat", "r", encoding="ascii") as stat_file:
+                    fields = stat_file.read().rsplit(")", 1)[1].split()
+                ppid = int(fields[1])
+                stat_by_pid[pid] = ppid
+            except (OSError, ValueError, IndexError):
+                continue
+        descendants = {process.pid}
+        changed = True
+        while changed:
+            changed = False
+            for pid, ppid in stat_by_pid.items():
+                if ppid in descendants and pid not in descendants:
+                    descendants.add(pid)
+                    changed = True
+        for pid in descendants:
+            try:
+                with open(f"/proc/{pid}/status", "r", encoding="ascii") as status_file:
+                    status = status_file.read().splitlines()
+                values = {line.split(":", 1)[0]: line.split(":", 1)[1].strip()
+                          for line in status if ":" in line}
+                hwm = int(values.get("VmHWM", "0 kB").split()[0])
+                rss = int(values.get("VmRSS", "0 kB").split()[0])
+                name = values.get("Name", "")
+            except (OSError, ValueError, IndexError):
+                continue
+            if hwm > max_hwm_kib:
+                max_hwm_kib, max_pid, max_name = hwm, pid, name
+            max_rss_kib = max(max_rss_kib, rss)
+        time.sleep(0.05)
+    result = process.wait()
+    elapsed = time.monotonic() - start
+    for line in (
+        f"MONITOR_EXIT_CODE={result}",
+        f"MONITOR_WALL_SECONDS={elapsed:.3f}",
+        f"MONITOR_PEAK_PROCESS_HWM_KIB={max_hwm_kib}",
+        f"MONITOR_PEAK_PROCESS_PID={max_pid}",
+        f"MONITOR_PEAK_PROCESS_NAME={max_name}",
+        f"MONITOR_MAX_SAMPLED_PROCESS_RSS_KIB={max_rss_kib}",
+    ):
+        log_file.write((line + "\n").encode("utf-8"))
+raise SystemExit(result)
+

Standalone/Research/WorldAssemblerM3/Linux5/REPORT.md

@@ -0,0 +1,165 @@
+# World Assembler M3 — Linux L5
+
+**Result:** no octave tail is safely removable under the declared bounds. The exact far meshes already exceed the 1 px field-error and LOD-swap budgets, and the cutoff flag is 2.2% slower in the W12 view. The candidate therefore generated the exact same meshes; recipe version stays 1.
+
+## Build and machine
+
+Built `VoxelForgeCoreHeadless-linux5-l5-final7` and its capture target on `assembler/world` at `7770074` with Clang 19 `-ffp-contract=off`, then GCC 14 default contraction, both with 12 jobs. W1/W12 hashes match across both compilers; the L3 FP-contract preamble and runtime self-test remain active. Runs used CPUs 0–11, normal priority, and the 6 GiB process limit. Maximum process HWM was 898,692 KiB (GCC compile); the largest runtime process was 454,828 KiB. CPU governor stayed `powersave`. `/dev/dri/renderD128` was absent, so EGL used Mesa llvmpipe with `LP_NUM_THREADS=12`. No packages or system settings were changed.
+
+## Capture and gate
+
+`LinuxOffscreenCapture.cpp` reads the `.vfmesh` export from the headless streaming pipeline, creates a surfaceless EGL/GLES3 pbuffer, and writes 2560×1440 PNGs with libpng. `ffmpeg` made 1280×720 review JPEGs; the largest is 73,923 bytes. The shader combines surface normals and 80 m height bands. Only the small JPEGs were opened for review.
+
+The gate samples a 65×65 XY grid on the closest native-surface tile at each LOD, excluding skirts. It reports two comparisons: displayed mesh against exact `Heightfield2D` ground/cap roots, and against a regenerated exact same-LOD mesh. The second is the zero-delta regression control; the first measures the actual field error. Swap error compares the coarse tile with its fine children at those same field roots. Full missing-surface, 2 m floating-surface, and missing fine-ring injections were rejected at every LOD3–8; so were both S13 controls.
+
+This is a sampled heightfield gate, not a full camera-ray rasterizer. It can miss cracks narrower than one grid cell (1 m at LOD3, growing to 32 m at LOD8), and its direct-field row does not model tunnel walls or other non-heightfield faces. The same-LOD mesh comparison covers extra and missing mesh intersections at sampled points; a denser or full-screen geometry pass would be needed to certify sub-cell cracks and non-heightfield surfaces.
+
+## Closest display distances and budgets
+
+The code sweeps clipmap desired sets across X-boundary phases and measures tile AABB distance. The result matches the clipmap ring formula `3 × 32 chunks × 2^(LOD−1) × 0.25 m`; LOD0 is the player tile. The pixel angle is `90° / 2560 = 0.000613592 rad`.
+
+| LOD | Closest display distance | 1 px at that distance | Active rule |
+|---:|---:|---:|---:|
+| 0 | 0 m | 0 cm | exact, 2 cm |
+| 1 | 24.001 m | 1.473 cm | exact, 2 cm |
+| 2 | 48.001 m | 2.945 cm | exact, 2 cm |
+| 3 | 96.001 m | 5.891 cm | 1 px |
+| 4 | 192.001 m | 11.781 cm | 1 px |
+| 5 | 384.001 m | 23.562 cm | 1 px |
+| 6 | 768.001 m | 47.124 cm | 1 px |
+| 7 | 1,536.001 m | 94.248 cm | 1 px |
+| 8 | 3,072.001 m | 188.496 cm | 1 px |
+
+## Exact-field error and swap pop
+
+Baseline and cutoff values are identical. The exact same-LOD regression control is 0.0000 px p50/p99/max at all LOD3–8, with no missing or floating samples. Against the continuous `Heightfield2D` roots, however, the current exact meshes already exceed 1 px at every LOD. The owner’s expected near-zero control holds for exact-versus-exact mesh output, not for the true-field comparison.
+
+| LOD | Exact field p50 / p99 / max px (baseline → cutoff) | Swap p50 / p99 / max px | Swap cracks / floating |
+|---:|---:|---:|---:|
+| 3 → 2 | 0.9035 / 4.5839 / 7.3277 → same | 0.6714 / 4.1861 / 7.3277 | 0 / 0 |
+| 4 → 3 | 1.1170 / 5.6056 / 8.3307 → same | 0.8269 / 5.1958 / 8.2105 | 0 / 0 |
+| 5 → 4 | 1.5667 / 45.3010 / 126.2667 → same | 0.0000 / 20.7227 / 63.2266 | 0 / 0 |
+| 6 → 5 | 0.5870 / 21.2445 / 82.3615 → same | 0.0000 / 21.2445 / 82.3615 | 0 / 0 |
+| 7 → 6 | 0.3393 / 16.4341 / 47.9760 → same | 0.0000 / 16.4341 / 47.9760 | 0 / 0 |
+| 8 → 7 | 0.9616 / 24.9479 / 50.0934 → same | 0.9616 / 24.9479 / 50.0934 | 0 / 0 |
+
+The baseline gate rejects on the field row and every swap row. The cutoff run returns the same rejection. Fault injections also rejected: missing-surface samples were 4,225–13,642; floating-surface samples 4,225–13,641; missing fine-ring cracks 4,225–8,450.
+
+| LOD | S13 octave-drop p99 / max px | Stride-2 column interpolation p99 / max px |
+|---:|---:|---:|
+| 3 | 960.2333 / 998.8654 | 9.3917 / 13.9093 |
+| 4 | 3.7405 / 5.1103 | 9.2115 / 15.3435 |
+| 5 | 105.7114 / 129.3089 | 125.1435 / 191.6424 |
+| 6 | 218.7777 / 749.9535 | 82.1098 / 148.9485 |
+| 7 | 95.1867 / 129.1796 | 40.6881 / 80.6012 |
+| 8 | 38.1461 / 282.3288 | 28.8473 / 278.6236 |
+
+Both controls were rejected at every LOD3–8. The octave-drop case produced missing samples at LOD3, 5–8 and floating samples at LOD5–8; stride-2 interpolation produced missing/floating samples at LOD5, 7 and 8.
+
+## Cutoff contract and detail cost
+
+The version-2 shared visual-detail contract declares stable octave terms with wavelength, octave count, displacement bound, and noise bound. A suffix is eligible only when its wavelengths are undersampled and its full displacement bound fits within one sixty-fourth of the tile’s pixel budget. Skipped zero-mean terms retain the original normalization denominator. Recipes with no terms keep the exact path; `FloatingIslandFieldV1` declares none, and its baseline/cutoff LOD hashes match. This is separate from content recipe version 1, which stays unchanged because output did not change.
+
+SurfaceWorld declares 17 terms per LOD. No term or octave tail qualifies at LOD3–8. Sample steps are 16, 32, 64, 128, 256, and 512 voxels respectively. The bounds explain the result: even the smallest declared maximum displacement is 256 voxels, against a 0.2356-voxel 1 px budget at LOD3. The cutoff skips zero octaves, so eligible octave time is 0 ms.
+
+| Octave | Terms | Wavelength range (voxels) | Max displacement range (voxels) |
+|---:|---:|---:|---:|
+| 0 | 17 | 25–10,000 | 1,024–640,000 |
+| 1 | 17 | 12.5–5,000 | 512–320,000 |
+| 2 | 15 | 6.25–1,250 | 256–160,000 |
+| 3 | 4 | 41.664–250 | 3,968–24,800 |
+
+W12 profile from the exact baseline; octave milliseconds are summed across evaluated calls/workers. They are all measured detail work, not removable work under the bound above.
+
+| LOD | Worker sum s | Octave 0 ms | Octave 1 ms | Octave 2 ms | Octave 3 ms | Detail total ms (% worker sum) | Eligible ms |
+|---:|---:|---:|---:|---:|---:|---:|---:|
+| 3 | 1.660 | 71.585 | 69.911 | 68.535 | 15.407 | 225.437 (13.58%) | 0 |
+| 4 | 3.321 | 135.512 | 131.224 | 128.645 | 26.506 | 421.887 (12.70%) | 0 |
+| 5 | 2.283 | 82.131 | 80.450 | 77.545 | 16.262 | 256.388 (11.23%) | 0 |
+| 6 | 3.587 | 153.409 | 148.854 | 144.175 | 29.984 | 476.422 (13.28%) | 0 |
+| 7 | 1.447 | 35.301 | 34.493 | 33.138 | 7.069 | 110.001 (7.60%) | 0 |
+| 8 | 2.685 | 58.763 | 57.751 | 56.277 | 11.848 | 184.638 (6.88%) | 0 |
+
+The cutoff is recipe-generic, display-mesh-only, and activated only for LOD3+. Exact density, detail, collision, edit, and walkability paths remain outside it. LOD0–2 keep the 2 cm path. ARCHITECTURE §8.10 invariants remain: lazy thread-local caches, two-pass MC, SSE noise, and clipmap streaming. The cutoff state is scoped to mesh generation under the async-safety rules.
+
+## W12 speed, interleaved with L4
+
+Three L4/candidate pairs, all W12, measured on the L1 camera. The candidate is the final build with `--visual-detail-cutoff`.
+
+| Measure (median) | L4 binary | Candidate | Change |
+|---|---:|---:|---:|
+| Whole-view ready | 2.183 s | 2.232 s | +2.2% |
+| Stream wall | 1.895 s | 1.963 s | +3.6% |
+| Far worker sum, LOD3–8 | 12.247 s | 12.458 s | +1.7% |
+
+| LOD | L4 worker sum s | Candidate worker sum s |
+|---:|---:|---:|
+| 0 | 3.799 | 4.094 |
+| 1 | 5.304 | 5.573 |
+| 2 | 1.281 | 1.340 |
+| 3 | 1.102 | 1.138 |
+| 4 | 2.723 | 2.719 |
+| 5 | 1.898 | 1.976 |
+| 6 | 2.875 | 2.944 |
+| 7 | 1.243 | 1.282 |
+| 8 | 2.355 | 2.400 |
+
+There is no speed benefit because nothing qualifies for skipping; the small regression is cutoff setup and bookkeeping.
+
+## Hashes and captures
+
+Baseline and cutoff hashes match for all LOD0–8. The old L4 binary’s aggregate hashes also match: whole view `c10697a8f48380c7 / e75c9119a1498cd5 / 49a9a8d1835a6c8c / edcb23288b5e8724` and full detail `0ee0579bd15cbbe4 / 32e5d4964d610fee / 1932b96ee4b1d910 / 69743c6bad3447dc`. The recipe stays version 1 because output did not change.
+
+| LOD | Density | Mesh | Payload | Topology |
+|---:|---|---|---|---|
+| 0 | 769f2a706d585a72 | 33eeeb39fa443816 | 645621a1d968983f | c2457ed905036c9d |
+| 1 | 69cc5a5c0a2c60af | b48335f5410c57d5 | d15c5480162ab8ba | feca1bd025823604 |
+| 2 | 85deed5683a77202 | 53469895987aeea2 | e55f8ae7e1532033 | d5feb12a0e85c09b |
+| 3 | 6518caefb3be7e7f | ec513c90b853a614 | f62fa1137ff17f82 | ccf1dcf681965816 |
+| 4 | 62d4be96021992f4 | f1e4c6efcc2615a9 | 9dc5f9c88be02f33 | fe6f55125a07c3bf |
+| 5 | 5e4a8c38b8cea6fc | 08ee56998aaf21e5 | 541eea8558f26cc8 | 6539374a8b3336d8 |
+| 6 | e036e95b9006945b | 624a33f941a99b02 | 81b73e14f68bdf86 | 4de4c63ce1f80a56 |
+| 7 | 8ee358af56a30d8d | 46ab3c6184048b7c | 0a6164b7e68e80c5 | 0c26b85bb03bc831 |
+| 8 | c3458e1cbdb9c471 | 46c03d0994d75192 | 8f89fc5bde12d230 | d16dc0cf62031898 |
+
+Nine direct-Core query probes also match baseline/cutoff and W1/W12 Clang/GCC: density and unclamped `e4d4a8eb95b35933`, detail `efcba20c0c70c415`, collision `e604823a249029bf`.
+
+| Before / after pair | View |
+|---|---|
+| `before_l1.jpg` / `after_l1.jpg` | Exact L1 camera `0,-35,-487.94,0,-22` |
+| `before_horizon.jpg` / `after_horizon.jpg` | Same position, pitch −2° |
+| `before_boundary_lod2_3.jpg` / `after_boundary_lod2_3.jpg` | 20 m above local heightfield, aimed at the 96 m LOD3 entry band |
+
+The boundary camera is `0,-35,-480.77246,0,-12`; the local heightfield is at −500.77246 m, placing the ground intersection about 96 m away.
+
+The six review JPEGs are byte-identical within each pair. PNGs are in `Saved/Linux/captures/`; JPEGs are in `Linux5/captures/`.
+
+## Failed and retried runs
+
+- The first headless invocation omitted required streaming flags; the next used the default binary-relative data path and could not open the owner JSON. Both were retried with all flags and the explicit `Standalone/data/owner_world.json` path.
+- The first process-monitor wrapper errored after its Clang build had completed; the run was repeated with `MeasureProcess.py` to record process HWM and duration.
+- The first capture named a nonexistent mesh path and exited 2; the exported `.vfmesh` path was corrected.
+- The first gate build failed on a duplicate `Distances` local; the corrected build passed. A first stride-2 control changed the MC lattice instead of reproducing S13’s every-second-column interpolation; the final control uses bilinear column interpolation.
+- Initial comparison against only the continuous field mixed surface interpolation with unrelated tunnel intersections. The final instrument reports exact heightfield roots separately from the exact-mesh regression and ring checks.
+- Early W12 cutoff candidates took 2.70–2.91 s. The zero-eligible path and distance setup were moved off the expensive profiling/phase-sweep path; the final interleaved candidate median is 2.232 s. It still does not improve L4.
+- One final GCC W12 command omitted `--stream-pipeline` and exited 2; the corrected rerun passed. The initial −50° boundary capture mostly showed near ground; the final pair uses the camera listed above.
+- The final baseline and cutoff gate commands exit 6 by design: both correctly reject the exact-field error and swap pops. No process exceeded 30 minutes or stalled for 15 minutes.
+
+Core/API changes are in `VoxelForgeCore.h`, `WorldAssemblerInternal.h`, `FloatingIslandsInternal.h`, and `VoxelForgeCore.cpp`. Standalone changes are in `StreamingWorld.h`, `StreamBenchmarkPipeline.h`, `StreamBenchmarkHeadless.cpp`, `LinuxScreenSpaceGate.h`, `LinuxOffscreenCapture.cpp`, and `BuildLinux.sh`; process measurements are in `MeasureProcess.py`.
+
+**For the owner:** Far terrain will look exactly as it does now because no octave tail met the bound. Existing far LOD swaps exceed the 1 px target, so the mesh sampling and transition error need attention before octave skipping can be used.
+
+## Orchestrator review (Claude)
+
+- **Not merged into `assembler/world`:** kept on side branch `wip/l5-far-cutoff`. With the cutoff flag OFF,
+  the L5 build is slower than L4. My interleaved W12 runs: L4 2.054/2.097/2.179 s vs L5 `final7`
+  2.127/2.193/2.208 s (medians 2.097 → 2.193, +4.6%), same world. Cost and no benefit.
+- **Instrument caveat:** the gate prints `metric=vertical_height_error`. On steep slopes and cliffs, a
+  small horizontal offset becomes a large vertical error, so vertical error overstates screen
+  displacement. p50 is ~1 px but p99/max reach 20–126 px, the pattern such an artifact produces. The
+  claims "today's far meshes exceed 1 px" and "LOD swaps pop by up to 126 px" are therefore NOT yet
+  established. They need a screen-space measure: error along the surface normal or along camera rays,
+  projected at the display distance.
+- The cutoff criterion (full displacement supremum ≤ 1/64 px) cannot pass for any SurfaceWorld octave
+  (smallest bound 256 voxels vs 0.24), so the null result was decided by the criterion, not measured.
+- The capture path (EGL/GLES pbuffer; llvmpipe, since the sandbox hides `/dev/dri`) works and is worth keeping.

Standalone/Research/WorldAssemblerM3/Linux6/REPORT.md

@@ -0,0 +1,102 @@
+# Linux6 report
+
+## Result
+
+The screen-space gate rejects today’s far meshes at every sampled LOD3–8: the largest measured same-field error is 92.0 px, and the largest sampled swap pop is 70.3 px at LOD6→5. Same-LOD regeneration is exact, the reported swaps have no cracks or floaters, and no display mesh changed in this round.
+
+Source base: `wip/l5-far-cutoff` at `b21a19d`; L4 reference: `7770074`.
+
+## Screen-space method
+
+For one surface tile nearest the L1 camera at each LOD, the gate rasterizes triangles on a 65×65 XY grid, excluding skirts. It compares the mesh hit to direct `Heightfield2D` ground/cap roots; slopes use ±1-voxel finite differences. For vertical residual `Δz` and slopes `sx,sy`, it computes normal distance `|Δz|/sqrt(1+sx²+sy²)`, projects that normal onto the camera’s screen plane, then divides by the one-pixel world distance at that LOD’s closest display distance. The view uses 90° horizontal FOV, 2560 px, yaw 0°, pitch −22°; one pixel is 0.000613592 rad. Same-LOD regeneration is the mesh reference for swaps; direct field roots are the reference for true surface error.
+
+The known failure control is a 1 m cell on an 89.427° plane, shifted sideways by 5 mm (0.005 cell): its vertical metric says 8.488 px, while its true normal distance is 5 mm and projected screen error is 0.0849 px. This confirms that vertical height can badly overstate visible displacement.
+
+| LOD | Closest distance (m) | Field error p50 / p99 / max (px) | Max normal distance (m) |
+|---:|---:|---:|---:|
+| 3 | 96 | 0.81 / 4.16 / 6.00 | 0.423 |
+| 4 | 192 | 1.01 / 5.12 / 7.93 | 0.952 |
+| 5 | 384 | 0.79 / 16.37 / 92.02 | 25.122 |
+| 6 | 768 | 0.51 / 9.75 / 70.34 | 37.644 |
+| 7 | 1,536 | 0.29 / 9.04 / 42.36 | 42.714 |
+| 8 | 3,072 | 0.83 / 18.03 / 47.18 | 93.175 |
+
+| Swap | Distance (m) | Pop p50 / p99 / max (px) | Max normal distance (m) |
+|---|---:|---:|---:|
+| 3→2 | 96 | 0.61 / 3.77 / 6.05 | 0.367 |
+| 4→3 | 192 | 0.75 / 4.63 / 7.51 | 0.896 |
+| 5→4 | 384 | 0.00 / 9.58 / 31.78 | 8.139 |
+| 6→5 | 768 | 0.00 / 9.75 / 70.34 | 37.644 |
+| 7→6 | 1,536 | 0.00 / 9.04 / 42.36 | 42.714 |
+| 8→7 | 3,072 | 0.83 / 18.03 / 47.18 | 93.175 |
+
+The tails are not confined to cliffs. The field maximum slopes at LOD5–8 are 8.34°, 14.09°, 6.76°, and 9.33°; LOD5’s p99 is 19.8 px below 30° and 21.1 px at 45–60°. The sampled LOD6→5 maximum is at `(-472, -1432, -463.151) m`; [the marked offscreen capture](captures/lod6_to_5_max_pop.jpg) shows that location at the 768 m swap distance. This is a sampled-tile result, not a whole-world supremum.
+
+All same-LOD mesh comparisons at LOD3–8 pass with zero error. The S13 octave-drop and corrected stride-2 column-interpolation controls are rejected at every LOD3–8, as are missing displayed surface, 2 m floating surface, and missing fine-ring injections. The measured swap rows have zero cracks and floaters; they reject solely on displacement.
+
+## Far worker time, W12
+
+The L1 view has 2553 tiles. Clean-run phase totals for LOD3–8 are shown below. A separate temporary timer measured complete `FractalNoiseQ16` calls; “column outside” is clean column time minus that subtotal. The timer added 3–6% to worker time, so the split between those two column subphases is approximate; it has been removed from the final tree.
+
+| LOD | Worker (s) | Column outside noise (ms) | Fractal/noise calls (ms) | MC (ms) | Ground refine (ms) | Cap refine (ms) | Skirts (ms) | Assembly (ms) |
+|---:|---:|---:|---:|---:|---:|---:|---:|---:|
+| 3 | 1.084 | 171 | 276 | 473 | 0 | 0 | 118 | 33 |
+| 4 | 2.581 | 1,000 | 534 | 440 | 0 | 304 | 196 | 102 |
+| 5 | 1.829 | 658 | 358 | 100 | 464 | 22 | 161 | 70 |
+| 6 | 2.761 | 1,608 | 284 | 59 | 385 | 58 | 162 | 70 |
+| 7 | 1.192 | 234 | 198 | 32 | 275 | 202 | 153 | 96 |
+| 8 | 2.224 | 264 | 469 | 256 | 424 | 299 | 333 | 177 |
+| **Total** | **11.671** | **3,934** | **2,119** | **1,360** | **1,548** | **885** | **1,123** | **548** |
+
+Column work outside the fractal calls is the largest single phase (33.7% of far worker time); all column work is 51.9%. Ground and cap refinement total 2.43 worker-s, skirts 1.12 worker-s, MC 1.36 worker-s, and assembly 0.55 worker-s. The earlier 7–13% profile timed individual Perlin calls; the L6 subtotal times complete fractal calls, including their octave accumulation.
+
+The listed subphases total 11.52 worker-s; about 0.15 worker-s remains in timer and per-tile residuals.
+
+The overlap scan counted about 411,000 cross-worker neighboring duplicate XY evaluations at LOD3–8 (about 166,000 at LOD4 alone). Exact column reuse is the largest plausible lever because it targets the largest phase. I did not build it: no candidate has yet shown a screen-gated, greater-than-3% whole-view win. Stride-2 interpolation is not a safe substitute; its control fails at every far LOD.
+
+## Cost with the feature off
+
+Three interleaved W12 runs per binary, same L1 camera and forced generation. `whole_view_ready` is the comparison metric; the six whole-view hashes matched exactly.
+
+| Binary | Runs (s) | Median |
+|---|---|---:|
+| L4 reference | 2.082, 2.180, 2.183 | 2.180 s |
+| L6 cleaned tree | 2.127, 2.185, 2.223 | 2.185 s (+0.2%) |
+
+Run-to-run spread was about 0.10 s, so the 5 ms median difference is within noise. The no-op visual cutoff contract, plan, and CLI flag were removed. The opt-in research gate retains its negative controls; skirt timing uses the existing optional stage-timing pointer, which is null on the default path. Governor stayed `powersave`; runs used CPUs 0–11, W12, 6 GiB address-space limits, and normal priority. Peak runtime RSS was 403 MiB; peak build process RSS was 874 MiB (GCC).
+
+## Determinism and hashes
+
+Clang 19 `-ffp-contract=off` W1/W12 and GCC default W1/W12 produced the same hashes. LOD0–2, exact queries, and all whole-view hashes equal L4; no recipe bump is needed.
+
+- Recipe / plan / manifest: `83b616a3f4fe781d` / `1ca84619c8600ee5` / `e55991385bf0ca29` (recipe version 1).
+- Whole view (density / mesh / payload / topology): `c10697a8f48380c7` / `e75c9119a1498cd5` / `49a9a8d1835a6c8c` / `edcb23288b5e8724`.
+- Full detail (density / mesh / payload / topology): `0ee0579bd15cbbe4` / `32e5d4964d610fee` / `1932b96ee4b1d910` / `69743c6bad3447dc`.
+- Exact queries (density / unclamped / detail / collision): `e4d4a8eb95b35933` / `e4d4a8eb95b35933` / `efcba20c0c70c415` / `e604823a249029bf`.
+- SHA-256 L4 binary / Clang L6 binary / GCC L6 binary: `6efb8f19a41ca3cd23aca9294ceee1e9cdd1d3dc8da23b3ee61ef8ae943aa763` / `3f5a4f88b0d911e8e66af9ef72e294926a5507a73d44fcfe868df27c666bf01e` / `de872e8fdaa9f40e8a6c096700fd998bcf35f232b06f2b4e35a374b4b0e9fa07`.
+- Capture JPEG SHA-256: `483b434f3ad752dd09b82cd1c78fe81ee8cd31803ecf4dcd3c2918a8ae5d66b1` (156 KiB).
+
+## Failed or retried runs
+
+- First Clang build failed on a missing view argument in `LinuxScreenSpaceGate.h`; fixed and rebuilt successfully.
+- First gate pass paired extra mesh hits incorrectly and reported same-LOD floaters at LOD5–8. The reference pairing was corrected; the final gate reports zero same-LOD displacement and no floaters.
+- A `/usr/bin/time -v` wrapper attempt exited 127 because that binary is unavailable; the runs were retried with `/proc` RSS monitoring.
+- The final quality gates exit 6 by design because measured displacement exceeds the 1 px rule. Builds, captures, determinism runs, and cost runs completed successfully. EGL could not write `~/.cache` in this environment, disabled shader caching, and rendered successfully on llvmpipe.
+
+## Note for the owner
+
+Today’s `assembler/world` remains at L4; this sampled view measures up to 92.0 px from the field and a 70.3 px LOD6→5 pop at the tested display distances, with the largest point marked in the capture. This round changes no default mesh or recipe output, removes the no-op cutoff, and leaves W12 cost within run-to-run noise.
+
+## Orchestrator review (Claude)
+
+- Cost re-run by me (interleaved W12, L1 view): L4 2.098/2.138/2.171 s vs L6 2.116/2.150/2.197 s
+  (median +0.6%, within noise), density `c10697a8f48380c7`; the L6 binary SHA matches the report.
+  Merged into `assembler/world` with L5 squashed in.
+- The marked LOD6→5 maximum sits on the **rim of a flat-topped hill (mesa edge)**, not on open gentle
+  ground: the "8–14° slope" is the field slope at the sample, on the plateau top beside the drop. The
+  coarse mesh rounds the rim by about a cell (16–32 m at LOD5–6), so the pop is a real **silhouette snap
+  at sharp rims** (tens of px at 768 m), while p50 stays at 0 px. That is ordinary LOD-switch behaviour
+  without geomorphing or cross-fade, so a fix belongs in rendering (Unreal), not in generation. The
+  owner decides whether it is visible enough to matter.
+- Next speed lever, per the far breakdown: exact cross-tile column reuse (column work outside noise is
+  34% of far worker time; ~411k duplicate XY evaluations at LOD3–8).

Standalone/Source/LinuxOffscreenCapture.cpp

@@ -0,0 +1,397 @@
+#include <EGL/egl.h>
+#include <EGL/eglext.h>
+#include <GLES3/gl3.h>
+#include <png.h>
+
+#include <algorithm>
+#include <array>
+#include <cmath>
+#include <cstddef>
+#include <cstdint>
+#include <cstdio>
+#include <cstdlib>
+#include <cstring>
+#include <filesystem>
+#include <fstream>
+#include <limits>
+#include <string>
+#include <string_view>
+#include <vector>
+
+namespace
+{
+    struct FVertex
+    {
+        float Position[3];
+        float Normal[3];
+        float Height;
+    };
+
+    struct FScene
+    {
+        std::uint32_t VoxelSizeMicrons=0;
+        std::array<double,3> CameraMeters{};
+        double YawDegrees=0.0,PitchDegrees=0.0;
+        std::vector<FVertex> Vertices;
+        std::vector<std::uint32_t> Indices;
+        std::uint64_t Triangles=0,SkirtTriangles=0;
+        std::uint32_t TileCount=0;
+    };
+
+    template<typename T> bool Read(std::ifstream& File,T& Value)
+    {
+        File.read(reinterpret_cast<char*>(&Value),sizeof(Value));
+        return static_cast<bool>(File);
+    }
+
+    bool LoadScene(const std::filesystem::path& Path,FScene& Scene,std::string& Error)
+    {
+        std::ifstream File(Path,std::ios::binary);
+        if(!File){Error="cannot open mesh scene";return false;}
+        char Magic[8]{};
+        File.read(Magic,sizeof(Magic));
+        if(!File||std::memcmp(Magic,"VFMSH001",8)!=0)
+        {Error="mesh scene magic is invalid";return false;}
+        std::uint32_t Version=0,ExpectedTiles=0;
+        if(!Read(File,Version)||!Read(File,Scene.VoxelSizeMicrons)||!Read(File,ExpectedTiles)
+            ||Version!=1||Scene.VoxelSizeMicrons==0||ExpectedTiles>1000000)
+        {Error="mesh scene header is malformed";return false;}
+        for(double& Value:Scene.CameraMeters)if(!Read(File,Value))
+        {Error="mesh scene camera is truncated";return false;}
+        if(!Read(File,Scene.YawDegrees)||!Read(File,Scene.PitchDegrees))
+        {Error="mesh scene camera orientation is truncated";return false;}
+        Scene.TileCount=ExpectedTiles;
+        std::uint64_t TotalVertices=0,TotalIndices=0;
+        for(std::uint32_t Tile=0;Tile<ExpectedTiles;++Tile)
+        {
+            std::int32_t Key[4]{};
+            std::uint32_t SurfaceVertices=0,SkirtCount=0,VertexCount=0,IndexCount=0,MaskCount=0;
+            for(auto& Value:Key)if(!Read(File,Value)){Error="tile key is truncated";return false;}
+            if(!Read(File,SurfaceVertices)||!Read(File,SkirtCount)||!Read(File,VertexCount)
+                ||!Read(File,IndexCount)||!Read(File,MaskCount)
+                ||VertexCount>10000000||IndexCount>60000000||MaskCount>20000000
+                ||IndexCount%3!=0||(MaskCount!=0&&MaskCount!=IndexCount/3))
+            {Error="tile mesh header is malformed";return false;}
+            if(TotalVertices+VertexCount>std::numeric_limits<std::uint32_t>::max()
+                ||TotalIndices+IndexCount>std::numeric_limits<std::size_t>::max())
+            {Error="mesh scene exceeds supported index space";return false;}
+            const std::size_t Base=Scene.Vertices.size();
+            Scene.Vertices.resize(Base+VertexCount);
+            Scene.Indices.reserve(Scene.Indices.size()+IndexCount);
+            for(std::size_t I=Base;I<Base+VertexCount;++I)
+                for(float& Value:Scene.Vertices[I].Position)if(!Read(File,Value))
+                {Error="tile positions are truncated";return false;}
+            for(std::size_t I=Base;I<Base+VertexCount;++I)
+            {
+                for(float& Value:Scene.Vertices[I].Normal)if(!Read(File,Value))
+                {Error="tile normals are truncated";return false;}
+                Scene.Vertices[I].Height=Scene.Vertices[I].Position[2];
+            }
+            const std::size_t IndexOffset=Scene.Indices.size();
+            Scene.Indices.resize(IndexOffset+IndexCount);
+            if(IndexCount)File.read(reinterpret_cast<char*>(Scene.Indices.data()+IndexOffset),
+                static_cast<std::streamsize>(sizeof(std::uint32_t)*IndexCount));
+            std::vector<std::uint8_t> Masks(MaskCount);
+            if(MaskCount)File.read(reinterpret_cast<char*>(Masks.data()),MaskCount);
+            if(!File){Error="tile index or skirt data is truncated";return false;}
+            for(std::size_t Index=IndexOffset;Index<Scene.Indices.size();++Index)
+            {
+                if(Scene.Indices[Index]>=VertexCount)
+                {Error="tile index points outside its vertex array";return false;}
+                Scene.Indices[Index]+=static_cast<std::uint32_t>(Base);
+            }
+            Scene.Triangles+=IndexCount/3;
+            Scene.SkirtTriangles+=SkirtCount;
+            TotalVertices+=VertexCount;TotalIndices+=IndexCount;
+        }
+        if(File.peek()!=std::char_traits<char>::eof())
+        {Error="mesh scene has trailing bytes";return false;}
+        if(Scene.Indices.empty()){Error="mesh scene contains no triangles";return false;}
+        return true;
+    }
+
+    EGLDisplay MakeDisplay()
+    {
+        using TGetPlatformDisplay=EGLDisplay(*)(EGLenum,void*,const EGLint*);
+        auto GetPlatformDisplay=reinterpret_cast<TGetPlatformDisplay>(
+            eglGetProcAddress("eglGetPlatformDisplayEXT"));
+#ifdef EGL_PLATFORM_SURFACELESS_MESA
+        if(GetPlatformDisplay)
+        {
+            const EGLDisplay Display=GetPlatformDisplay(EGL_PLATFORM_SURFACELESS_MESA,
+                EGL_DEFAULT_DISPLAY,nullptr);
+            if(Display!=EGL_NO_DISPLAY)return Display;
+        }
+#endif
+        return eglGetDisplay(EGL_DEFAULT_DISPLAY);
+    }
+
+    GLuint CompileShader(GLenum Type,const char* Source)
+    {
+        const GLuint Shader=glCreateShader(Type);
+        glShaderSource(Shader,1,&Source,nullptr);
+        glCompileShader(Shader);
+        GLint Success=GL_FALSE;
+        glGetShaderiv(Shader,GL_COMPILE_STATUS,&Success);
+        if(Success==GL_FALSE)
+        {
+            GLint Length=0;glGetShaderiv(Shader,GL_INFO_LOG_LENGTH,&Length);
+            std::string Log(static_cast<std::size_t>(std::max(Length,1)),0);
+            glGetShaderInfoLog(Shader,Length,nullptr,Log.data());
+            std::fprintf(stderr,"[OffscreenGL] shader compile failed: %s\n",Log.c_str());
+            glDeleteShader(Shader);return 0;
+        }
+        return Shader;
+    }
+
+    GLuint MakeProgram()
+    {
+        static constexpr char VertexSource[]=R"GLSL(#version 300 es
+precision highp float;
+layout(location=0) in vec3 inCameraPosition;
+layout(location=1) in vec3 inNormal;
+layout(location=2) in float inHeight;
+out vec3 vNormal;
+out float vHeight;
+uniform float uTanHalfHorizontal;
+uniform float uTanHalfVertical;
+uniform float uNear;
+uniform float uFar;
+void main()
+{
+    float z=max(inCameraPosition.z,0.0001);
+    float clipZ=((uFar+uNear)/(uFar-uNear))*z-(2.0*uFar*uNear)/(uFar-uNear);
+    gl_Position=vec4(inCameraPosition.x/uTanHalfHorizontal,
+        inCameraPosition.y/uTanHalfVertical,clipZ,z);
+    vNormal=normalize(inNormal);
+    vHeight=inHeight;
+})GLSL";
+        static constexpr char FragmentSource[]=R"GLSL(#version 300 es
+precision highp float;
+in vec3 vNormal;
+in float vHeight;
+out vec4 outColor;
+void main()
+{
+    vec3 n=normalize(vNormal);
+    vec3 normalColor=abs(n)*0.78+vec3(0.12);
+    float band=mod(floor((vHeight+10000.0)/80.0),2.0);
+    vec3 bandColor=mix(vec3(0.24,0.31,0.37),vec3(0.39,0.42,0.35),band);
+    outColor=vec4(mix(bandColor,normalColor,0.68),1.0);
+})GLSL";
+        const GLuint VS=CompileShader(GL_VERTEX_SHADER,VertexSource);
+        const GLuint FS=CompileShader(GL_FRAGMENT_SHADER,FragmentSource);
+        if(!VS||!FS)return 0;
+        const GLuint Program=glCreateProgram();
+        glAttachShader(Program,VS);glAttachShader(Program,FS);glLinkProgram(Program);
+        glDeleteShader(VS);glDeleteShader(FS);
+        GLint Success=GL_FALSE;glGetProgramiv(Program,GL_LINK_STATUS,&Success);
+        if(Success==GL_FALSE)
+        {
+            GLint Length=0;glGetProgramiv(Program,GL_INFO_LOG_LENGTH,&Length);
+            std::string Log(static_cast<std::size_t>(std::max(Length,1)),0);
+            glGetProgramInfoLog(Program,Length,nullptr,Log.data());
+            std::fprintf(stderr,"[OffscreenGL] program link failed: %s\n",Log.c_str());
+            glDeleteProgram(Program);return 0;
+        }
+        return Program;
+    }
+
+    bool WritePng(const std::filesystem::path& Path,int Width,int Height,
+                  const std::vector<std::uint8_t>& Pixels)
+    {
+        std::error_code Error;
+        if(!Path.parent_path().empty())std::filesystem::create_directories(Path.parent_path(),Error);
+        if(Error)return false;
+        FILE* File=std::fopen(Path.c_str(),"wb");
+        if(!File)return false;
+        png_structp Png=png_create_write_struct(PNG_LIBPNG_VER_STRING,nullptr,nullptr,nullptr);
+        png_infop Info=Png?png_create_info_struct(Png):nullptr;
+        if(!Png||!Info){if(Png)png_destroy_write_struct(&Png,nullptr);std::fclose(File);return false;}
+        if(setjmp(png_jmpbuf(Png)))
+        {png_destroy_write_struct(&Png,&Info);std::fclose(File);return false;}
+        png_init_io(Png,File);
+        png_set_IHDR(Png,Info,static_cast<png_uint_32>(Width),static_cast<png_uint_32>(Height),
+            8,PNG_COLOR_TYPE_RGBA,PNG_INTERLACE_NONE,PNG_COMPRESSION_TYPE_DEFAULT,PNG_FILTER_TYPE_DEFAULT);
+        png_write_info(Png,Info);
+        const std::size_t Stride=static_cast<std::size_t>(Width)*4;
+        for(int Y=Height-1;Y>=0;--Y)
+            png_write_row(Png,const_cast<png_bytep>(Pixels.data()+static_cast<std::size_t>(Y)*Stride));
+        png_write_end(Png,nullptr);
+        png_destroy_write_struct(&Png,&Info);
+        const bool Good=std::fclose(File)==0;
+        return Good;
+    }
+
+    bool Render(FScene& Scene,const std::filesystem::path& Output,int Width,int Height,
+                double HorizontalFovDegrees)
+    {
+        EGLDisplay Display=MakeDisplay();
+        EGLint Major=0,Minor=0;
+        if(Display==EGL_NO_DISPLAY||eglInitialize(Display,&Major,&Minor)!=EGL_TRUE)
+        {std::fprintf(stderr,"[OffscreenEGL] eglInitialize failed (0x%x)\n",eglGetError());return false;}
+        if(eglBindAPI(EGL_OPENGL_ES_API)!=EGL_TRUE)
+        {std::fprintf(stderr,"[OffscreenEGL] eglBindAPI failed (0x%x)\n",eglGetError());eglTerminate(Display);return false;}
+        const EGLint ConfigAttributes[]={EGL_SURFACE_TYPE,EGL_PBUFFER_BIT,
+            EGL_RENDERABLE_TYPE,EGL_OPENGL_ES3_BIT,EGL_RED_SIZE,8,EGL_GREEN_SIZE,8,
+            EGL_BLUE_SIZE,8,EGL_ALPHA_SIZE,8,EGL_DEPTH_SIZE,24,EGL_NONE};
+        EGLConfig Config{};EGLint ConfigCount=0;
+        if(eglChooseConfig(Display,ConfigAttributes,&Config,1,&ConfigCount)!=EGL_TRUE||ConfigCount==0)
+        {std::fprintf(stderr,"[OffscreenEGL] no GLES3 pbuffer config (0x%x)\n",eglGetError());eglTerminate(Display);return false;}
+        const EGLint SurfaceAttributes[]={EGL_WIDTH,Width,EGL_HEIGHT,Height,EGL_NONE};
+        EGLSurface Surface=eglCreatePbufferSurface(Display,Config,SurfaceAttributes);
+        const EGLint ContextAttributes[]={EGL_CONTEXT_CLIENT_VERSION,3,EGL_NONE};
+        EGLContext Context=eglCreateContext(Display,Config,EGL_NO_CONTEXT,ContextAttributes);
+        if(Surface==EGL_NO_SURFACE||Context==EGL_NO_CONTEXT
+            ||eglMakeCurrent(Display,Surface,Surface,Context)!=EGL_TRUE)
+        {std::fprintf(stderr,"[OffscreenEGL] context/surface creation failed (0x%x)\n",eglGetError());
+            if(Context!=EGL_NO_CONTEXT)eglDestroyContext(Display,Context);
+            if(Surface!=EGL_NO_SURFACE)eglDestroySurface(Display,Surface);
+            eglTerminate(Display);return false;}
+
+        const GLubyte* Renderer=glGetString(GL_RENDERER);
+        const GLubyte* GlVersion=glGetString(GL_VERSION);
+        std::printf("[OffscreenEGL] renderer=%s version=%s pbuffer=%dx%d\n",
+            Renderer?reinterpret_cast<const char*>(Renderer):"unknown",
+            GlVersion?reinterpret_cast<const char*>(GlVersion):"unknown",Width,Height);
+        GLuint ColorTexture=0,DepthBuffer=0,Framebuffer=0;
+        glGenTextures(1,&ColorTexture);glBindTexture(GL_TEXTURE_2D,ColorTexture);
+        glTexImage2D(GL_TEXTURE_2D,0,GL_RGBA8,Width,Height,0,GL_RGBA,GL_UNSIGNED_BYTE,nullptr);
+        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
+        glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
+        glGenRenderbuffers(1,&DepthBuffer);glBindRenderbuffer(GL_RENDERBUFFER,DepthBuffer);
+        glRenderbufferStorage(GL_RENDERBUFFER,GL_DEPTH_COMPONENT24,Width,Height);
+        glGenFramebuffers(1,&Framebuffer);glBindFramebuffer(GL_FRAMEBUFFER,Framebuffer);
+        glFramebufferTexture2D(GL_FRAMEBUFFER,GL_COLOR_ATTACHMENT0,GL_TEXTURE_2D,ColorTexture,0);
+        glFramebufferRenderbuffer(GL_FRAMEBUFFER,GL_DEPTH_ATTACHMENT,GL_RENDERBUFFER,DepthBuffer);
+        if(glCheckFramebufferStatus(GL_FRAMEBUFFER)!=GL_FRAMEBUFFER_COMPLETE)
+        {std::fprintf(stderr,"[OffscreenGL] framebuffer is incomplete\n");return false;}
+
+        constexpr double Pi=3.14159265358979323846;
+        const double Yaw=Scene.YawDegrees*Pi/180.0,Pitch=Scene.PitchDegrees*Pi/180.0;
+        const std::array<double,3> Forward={std::sin(Yaw)*std::cos(Pitch),
+            std::cos(Yaw)*std::cos(Pitch),std::sin(Pitch)};
+        const std::array<double,3> Right={std::cos(Yaw),-std::sin(Yaw),0.0};
+        const std::array<double,3> Up={Right[1]*Forward[2]-Right[2]*Forward[1],
+            Right[2]*Forward[0]-Right[0]*Forward[2],Right[0]*Forward[1]-Right[1]*Forward[0]};
+        const double TanHalfHorizontal=std::tan(HorizontalFovDegrees*Pi/360.0);
+        const double Aspect=static_cast<double>(Width)/Height;
+        const double TanHalfVertical=TanHalfHorizontal/Aspect;
+        const double Near=0.1,Far=20000.0;
+        for(FVertex& Vertex:Scene.Vertices)
+        {
+            const double DX=Vertex.Position[0]-Scene.CameraMeters[0];
+            const double DY=Vertex.Position[1]-Scene.CameraMeters[1];
+            const double DZ=Vertex.Position[2]-Scene.CameraMeters[2];
+            const float CameraX=static_cast<float>(DX*Right[0]+DY*Right[1]+DZ*Right[2]);
+            const float CameraY=static_cast<float>(DX*Up[0]+DY*Up[1]+DZ*Up[2]);
+            const float CameraZ=static_cast<float>(DX*Forward[0]+DY*Forward[1]+DZ*Forward[2]);
+            Vertex.Position[0]=CameraX;Vertex.Position[1]=CameraY;Vertex.Position[2]=CameraZ;
+        }
+        const GLuint Program=MakeProgram();
+        if(!Program)return false;
+        GLuint Vao=0,Vbo=0,Ebo=0;
+        glGenVertexArrays(1,&Vao);glBindVertexArray(Vao);
+        glGenBuffers(1,&Vbo);glBindBuffer(GL_ARRAY_BUFFER,Vbo);
+        glBufferData(GL_ARRAY_BUFFER,static_cast<GLsizeiptr>(Scene.Vertices.size()*sizeof(FVertex)),
+            Scene.Vertices.data(),GL_STATIC_DRAW);
+        glGenBuffers(1,&Ebo);glBindBuffer(GL_ELEMENT_ARRAY_BUFFER,Ebo);
+        glBufferData(GL_ELEMENT_ARRAY_BUFFER,static_cast<GLsizeiptr>(Scene.Indices.size()*sizeof(std::uint32_t)),
+            Scene.Indices.data(),GL_STATIC_DRAW);
+        glEnableVertexAttribArray(0);glVertexAttribPointer(0,3,GL_FLOAT,GL_FALSE,sizeof(FVertex),
+            reinterpret_cast<void*>(offsetof(FVertex,Position)));
+        glEnableVertexAttribArray(1);glVertexAttribPointer(1,3,GL_FLOAT,GL_FALSE,sizeof(FVertex),
+            reinterpret_cast<void*>(offsetof(FVertex,Normal)));
+        glEnableVertexAttribArray(2);glVertexAttribPointer(2,1,GL_FLOAT,GL_FALSE,sizeof(FVertex),
+            reinterpret_cast<void*>(offsetof(FVertex,Height)));
+        glViewport(0,0,Width,Height);glDisable(GL_CULL_FACE);glEnable(GL_DEPTH_TEST);
+        glDepthFunc(GL_LEQUAL);glClearColor(0.035f,0.055f,0.075f,1.0f);
+        glClearDepthf(1.0f);glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
+        glUseProgram(Program);
+        glUniform1f(glGetUniformLocation(Program,"uTanHalfHorizontal"),static_cast<float>(TanHalfHorizontal));
+        glUniform1f(glGetUniformLocation(Program,"uTanHalfVertical"),static_cast<float>(TanHalfVertical));
+        glUniform1f(glGetUniformLocation(Program,"uNear"),static_cast<float>(Near));
+        glUniform1f(glGetUniformLocation(Program,"uFar"),static_cast<float>(Far));
+        glDrawElements(GL_TRIANGLES,static_cast<GLsizei>(Scene.Indices.size()),GL_UNSIGNED_INT,nullptr);
+        glFinish();
+        std::vector<std::uint8_t> Pixels(static_cast<std::size_t>(Width)*Height*4);
+        glReadPixels(0,0,Width,Height,GL_RGBA,GL_UNSIGNED_BYTE,Pixels.data());
+        const GLenum GlError=glGetError();
+        const bool PngGood=GlError==GL_NO_ERROR&&WritePng(Output,Width,Height,Pixels);
+        if(!PngGood)std::fprintf(stderr,"[OffscreenGL] render or PNG write failed (GL=0x%x)\n",GlError);
+        else
+        {
+            std::error_code SizeError;
+            const auto Bytes=std::filesystem::file_size(Output,SizeError);
+            std::printf("[OffscreenCapture] triangles=%llu tiles=%u skirts=%llu png_bytes=%llu status=PASS path=%s\n",
+                static_cast<unsigned long long>(Scene.Triangles),Scene.TileCount,
+                static_cast<unsigned long long>(Scene.SkirtTriangles),
+                static_cast<unsigned long long>(SizeError?0:Bytes),Output.string().c_str());
+        }
+        glDeleteProgram(Program);glDeleteBuffers(1,&Ebo);glDeleteBuffers(1,&Vbo);
+        glDeleteVertexArrays(1,&Vao);glDeleteFramebuffers(1,&Framebuffer);
+        glDeleteRenderbuffers(1,&DepthBuffer);glDeleteTextures(1,&ColorTexture);
+        eglMakeCurrent(Display,EGL_NO_SURFACE,EGL_NO_SURFACE,EGL_NO_CONTEXT);
+        eglDestroyContext(Display,Context);eglDestroySurface(Display,Surface);eglTerminate(Display);
+        return PngGood;
+    }
+}
+
+int main(int argc,char** argv)
+{
+    if(argc<3)
+    {
+        std::fprintf(stderr,"Usage: %s scene.vfmesh output.png [--size=WIDTHxHEIGHT] [--fov-deg=90] [--camera-m=X,Y,Z] [--yaw-deg=N] [--pitch-deg=N]\n",argv[0]);
+        return 2;
+    }
+    int Width=2560,Height=1440;double Fov=90.0;
+    bool HasYaw=false,HasPitch=false;double Yaw=0.0,Pitch=0.0;
+    bool HasCamera=false;std::array<double,3> Camera{};
+    for(int I=3;I<argc;++I)
+    {
+        const std::string_view Arg(argv[I]);
+        if(Arg.starts_with("--size="))
+        {
+            const std::string Value(Arg.substr(7));
+            if(std::sscanf(Value.c_str(),"%dx%d",&Width,&Height)!=2||Width<=0||Height<=0)
+            {std::fprintf(stderr,"Invalid image size\n");return 2;}
+        }
+        else if(Arg.starts_with("--fov-deg="))
+        {
+            char* End=nullptr;const std::string Value(Arg.substr(10));Fov=std::strtod(Value.c_str(),&End);
+            if(End==Value.c_str()||*End!='\0'||Fov<=1.0||Fov>=179.0)
+            {std::fprintf(stderr,"Invalid horizontal FOV\n");return 2;}
+        }
+        else if(Arg.starts_with("--camera-m="))
+        {
+            const std::string Value(Arg.substr(11));
+            if(std::sscanf(Value.c_str(),"%lf,%lf,%lf",&Camera[0],&Camera[1],&Camera[2])!=3
+                ||!std::isfinite(Camera[0])||!std::isfinite(Camera[1])||!std::isfinite(Camera[2]))
+            {std::fprintf(stderr,"Invalid camera position\n");return 2;}
+            HasCamera=true;
+        }
+        else if(Arg.starts_with("--yaw-deg=")||Arg.starts_with("--pitch-deg="))
+        {
+            const bool IsYaw=Arg.starts_with("--yaw-deg=");
+            const std::size_t Prefix=IsYaw?10:12;
+            const std::string Value(Arg.substr(Prefix));char* End=nullptr;
+            const double Parsed=std::strtod(Value.c_str(),&End);
+            if(End==Value.c_str()||*End!='\0'||!std::isfinite(Parsed))
+            {std::fprintf(stderr,"Invalid camera angle\n");return 2;}
+            if(IsYaw){Yaw=Parsed;HasYaw=true;}else{Pitch=Parsed;HasPitch=true;}
+        }
+        else {std::fprintf(stderr,"Unknown option: %.*s\n",static_cast<int>(Arg.size()),Arg.data());return 2;}
+    }
+    FScene Scene;std::string Error;
+    if(!LoadScene(argv[1],Scene,Error))
+    {std::fprintf(stderr,"[OffscreenCapture] FAIL: %s\n",Error.c_str());return 2;}
+    if(HasCamera)Scene.CameraMeters=Camera;
+    if(HasYaw)Scene.YawDegrees=Yaw;
+    if(HasPitch)Scene.PitchDegrees=Pitch;
+    std::printf("[OffscreenScene] voxels_per_meter=%.6f camera_m=(%.3f,%.3f,%.3f) yaw=%.2f pitch=%.2f vertices=%zu triangles=%llu\n",
+        1000000.0/Scene.VoxelSizeMicrons,Scene.CameraMeters[0],Scene.CameraMeters[1],Scene.CameraMeters[2],
+        Scene.YawDegrees,Scene.PitchDegrees,Scene.Vertices.size(),
+        static_cast<unsigned long long>(Scene.Triangles));
+    return Render(Scene,argv[2],Width,Height,Fov)?0:3;
+}
+

Standalone/Source/LinuxScreenSpaceGate.h

@@ -0,0 +1,721 @@
+#pragma once
+
+#include "StreamingWorld.h"
+
+#include <algorithm>
+#include <array>
+#include <cmath>
+#include <cstdint>
+#include <cstdio>
+#include <limits>
+#include <optional>
+#include <span>
+#include <utility>
+#include <vector>
+
+namespace StandaloneScreenSpaceGate
+{
+    inline constexpr double OnePixelRadians=1.57079632679489661923/2560.0;
+
+    struct FErrorRow
+    {
+        int Lod=0;
+        std::uint64_t Samples=0,Missing=0,Floating=0;
+        double P50=0.0,P99=0.0,Maximum=0.0;
+        double VerticalP50=0.0,VerticalP99=0.0,VerticalMaximum=0.0;
+        double MaximumNormalDistanceMeters=0.0,MaximumX=0.0,MaximumY=0.0;
+        double MaximumReferenceZ=0.0,MaximumDisplayedZ=0.0;
+        double MaximumSlopeDegrees=0.0;
+        std::array<std::uint64_t,4> SlopeSamples{};
+        std::array<double,4> SlopeP99{},SlopeMaximum{};
+        bool Valid=false;
+    };
+
+    struct FPopRow
+    {
+        int CoarseLod=0;
+        std::uint64_t Samples=0,Cracks=0,Floating=0;
+        double P50=0.0,P99=0.0,Maximum=0.0;
+        double VerticalP50=0.0,VerticalP99=0.0,VerticalMaximum=0.0;
+        double MaximumNormalDistanceMeters=0.0,MaximumX=0.0,MaximumY=0.0;
+        double MaximumReferenceZ=0.0,MaximumDisplayedZ=0.0;
+        double MaximumSlopeDegrees=0.0;
+        std::array<std::uint64_t,4> SlopeSamples{};
+        std::array<double,4> SlopeP99{},SlopeMaximum{};
+        bool Valid=false;
+    };
+
+    struct FSurfaceRoot
+    {
+        double ZMeters=0.0;
+        double SlopeX=0.0;
+        double SlopeY=0.0;
+    };
+
+    struct FViewBasis
+    {
+        std::array<double,3> Right{};
+        std::array<double,3> Up{};
+    };
+
+    struct FErrorAccumulator
+    {
+        std::vector<double> Pixels,VerticalPixels;
+        std::array<std::vector<double>,4> BySlope;
+        double Maximum=-1.0,MaximumVertical=0.0,MaximumNormalDistanceMeters=0.0;
+        double MaximumX=0.0,MaximumY=0.0,MaximumSlopeDegrees=0.0;
+        double MaximumReferenceZ=0.0,MaximumDisplayedZ=0.0;
+        std::array<std::uint64_t,4> SlopeSamples{};
+    };
+
+    inline double Percentile(std::vector<double>& Values,double P);
+
+    inline FViewBasis MakeViewBasis(double YawDegrees,double PitchDegrees)
+    {
+        constexpr double Pi=3.14159265358979323846;
+        const double Yaw=YawDegrees*Pi/180.0,Pitch=PitchDegrees*Pi/180.0;
+        const std::array<double,3> Forward={std::sin(Yaw)*std::cos(Pitch),
+            std::cos(Yaw)*std::cos(Pitch),std::sin(Pitch)};
+        FViewBasis Basis;
+        Basis.Right={std::cos(Yaw),-std::sin(Yaw),0.0};
+        Basis.Up={Basis.Right[1]*Forward[2]-Basis.Right[2]*Forward[1],
+            Basis.Right[2]*Forward[0]-Basis.Right[0]*Forward[2],
+            Basis.Right[0]*Forward[1]-Basis.Right[1]*Forward[0]};
+        return Basis;
+    }
+
+    inline std::size_t SlopeBin(double Degrees)
+    {
+        if(Degrees<30.0)return 0;
+        if(Degrees<45.0)return 1;
+        if(Degrees<60.0)return 2;
+        return 3;
+    }
+
+    inline void AddError(FErrorAccumulator& Accumulator,double DeltaZMeters,
+        const FSurfaceRoot& Root,double PixelBudgetMeters,const FViewBasis& View,
+        double X,double Y)
+    {
+        constexpr double Pi=3.14159265358979323846;
+        const double GradientSquared=Root.SlopeX*Root.SlopeX+Root.SlopeY*Root.SlopeY;
+        const double NormalLength=std::sqrt(1.0+GradientSquared);
+        const double NormalX=-Root.SlopeX/NormalLength;
+        const double NormalY=-Root.SlopeY/NormalLength;
+        const double NormalZ=1.0/NormalLength;
+        const double NormalDistance=std::abs(DeltaZMeters)/NormalLength;
+        const double ProjectedNormal=std::hypot(
+            NormalX*View.Right[0]+NormalY*View.Right[1]+NormalZ*View.Right[2],
+            NormalX*View.Up[0]+NormalY*View.Up[1]+NormalZ*View.Up[2]);
+        const double ProjectedVertical=std::hypot(View.Right[2],View.Up[2]);
+        const double NormalPixels=NormalDistance*ProjectedNormal/PixelBudgetMeters;
+        const double VerticalPixels=std::abs(DeltaZMeters)*ProjectedVertical/PixelBudgetMeters;
+        const double SlopeDegrees=std::atan(std::sqrt(GradientSquared))*180.0/Pi;
+        Accumulator.Pixels.push_back(NormalPixels);
+        Accumulator.VerticalPixels.push_back(VerticalPixels);
+        const std::size_t Bin=SlopeBin(SlopeDegrees);
+        Accumulator.BySlope[Bin].push_back(NormalPixels);
+        ++Accumulator.SlopeSamples[Bin];
+        if(NormalPixels>Accumulator.Maximum)
+        {
+            Accumulator.Maximum=NormalPixels;
+            Accumulator.MaximumVertical=VerticalPixels;
+            Accumulator.MaximumNormalDistanceMeters=NormalDistance;
+            Accumulator.MaximumX=X;Accumulator.MaximumY=Y;
+            Accumulator.MaximumSlopeDegrees=SlopeDegrees;
+            Accumulator.MaximumReferenceZ=Root.ZMeters;
+            Accumulator.MaximumDisplayedZ=Root.ZMeters+DeltaZMeters;
+        }
+    }
+
+    inline void AddMissing(FErrorAccumulator& Accumulator)
+    {
+        Accumulator.Pixels.push_back(2.0);
+        Accumulator.VerticalPixels.push_back(2.0);
+    }
+
+    inline void FinalizeError(FErrorRow& Row,FErrorAccumulator& Accumulator)
+    {
+        Row.Samples=Accumulator.Pixels.size();
+        Row.P50=Percentile(Accumulator.Pixels,0.50);
+        Row.P99=Percentile(Accumulator.Pixels,0.99);
+        Row.Maximum=Accumulator.Pixels.empty()?0.0
+            :*std::max_element(Accumulator.Pixels.begin(),Accumulator.Pixels.end());
+        Row.VerticalP50=Percentile(Accumulator.VerticalPixels,0.50);
+        Row.VerticalP99=Percentile(Accumulator.VerticalPixels,0.99);
+        Row.VerticalMaximum=Accumulator.VerticalPixels.empty()?0.0
+            :*std::max_element(Accumulator.VerticalPixels.begin(),Accumulator.VerticalPixels.end());
+        Row.MaximumNormalDistanceMeters=Accumulator.MaximumNormalDistanceMeters;
+        Row.MaximumX=Accumulator.MaximumX;Row.MaximumY=Accumulator.MaximumY;
+        Row.MaximumReferenceZ=Accumulator.MaximumReferenceZ;
+        Row.MaximumDisplayedZ=Accumulator.MaximumDisplayedZ;
+        Row.MaximumSlopeDegrees=Accumulator.MaximumSlopeDegrees;
+        Row.SlopeSamples=Accumulator.SlopeSamples;
+        for(std::size_t Bin=0;Bin<Accumulator.BySlope.size();++Bin)
+        {
+            Row.SlopeP99[Bin]=Percentile(Accumulator.BySlope[Bin],0.99);
+            Row.SlopeMaximum[Bin]=Accumulator.BySlope[Bin].empty()?0.0
+                :*std::max_element(Accumulator.BySlope[Bin].begin(),Accumulator.BySlope[Bin].end());
+        }
+    }
+
+    struct FHeightGrid
+    {
+        int Side=65;
+        double MinimumX=0.0,MaximumX=0.0,MinimumY=0.0,MaximumY=0.0;
+        std::vector<std::vector<double>> Hits;
+
+        FHeightGrid()=default;
+        FHeightGrid(int InSide,double MinX,double MaxX,double MinY,double MaxY)
+            :Side(InSide),MinimumX(MinX),MaximumX(MaxX),MinimumY(MinY),MaximumY(MaxY),
+             Hits(static_cast<std::size_t>(InSide)*InSide)
+        {}
+
+        double X(int Ix) const
+        {return MinimumX+(MaximumX-MinimumX)*Ix/(Side-1);}
+        double Y(int Iy) const
+        {return MinimumY+(MaximumY-MinimumY)*Iy/(Side-1);}
+
+        void Add(int Ix,int Iy,double Z)
+        {
+            auto& Values=Hits[static_cast<std::size_t>(Iy)*Side+Ix];
+            Values.push_back(Z);
+        }
+
+        const std::vector<double>& At(int Ix,int Iy) const
+        {return Hits[static_cast<std::size_t>(Iy)*Side+Ix];}
+    };
+
+    inline double Percentile(std::vector<double>& Values,double P)
+    {
+        if(Values.empty())return 0.0;
+        std::sort(Values.begin(),Values.end());
+        const std::size_t Index=std::min(Values.size()-1,
+            static_cast<std::size_t>(std::ceil(P*Values.size())-1));
+        return Values[Index];
+    }
+
+    inline double TileAabbDistanceMeters(const FVoxelTileKey& Key,
+        const FVector& CameraVoxels,double VoxelMeters)
+    {
+        const double Extent=static_cast<double>(Key.ExtentVoxels());
+        const double Min[3]={static_cast<double>(Key.OriginVoxels().X),
+            static_cast<double>(Key.OriginVoxels().Y),static_cast<double>(Key.OriginVoxels().Z)};
+        const double Cam[3]={CameraVoxels.X,CameraVoxels.Y,CameraVoxels.Z};
+        double Squared=0.0;
+        for(int Axis=0;Axis<3;++Axis)
+        {
+            const double Delta=Cam[Axis]<Min[Axis]?Min[Axis]-Cam[Axis]
+                :Cam[Axis]>Min[Axis]+Extent?Cam[Axis]-(Min[Axis]+Extent):0.0;
+            Squared+=Delta*Delta;
+        }
+        return std::sqrt(Squared)*VoxelMeters;
+    }
+
+    inline bool TileHasNativeSurface(const FVoxelTileKey& Key,
+        const VoxelForgeCore::WorldAssemblyManifest& Assembly,
+        double VoxelMeters)
+    {
+        const double Extent=static_cast<double>(Key.ExtentVoxels());
+        const double X=(static_cast<double>(Key.OriginVoxels().X)+Extent*0.5)*256.0;
+        const double Y=(static_cast<double>(Key.OriginVoxels().Y)+Extent*0.5)*256.0;
+        const double MinZ=static_cast<double>(Key.OriginVoxels().Z);
+        const double MaxZ=MinZ+Extent;
+        for(const auto& Plan:Assembly.plan.strates)
+        {
+            VoxelForgeCore::Heightfield2D Field(Assembly.recipe,Plan);
+            if(!Field.isValid())continue;
+            const auto Column=Field.point(static_cast<std::int64_t>(std::llround(X)),
+                static_cast<std::int64_t>(std::llround(Y)),0);
+            const double Ground=static_cast<double>(Column.groundHeightSubvoxels)/256.0;
+            const double Cap=static_cast<double>(Column.capHeightSubvoxels)/256.0;
+            const double Margin=std::max(2.0,0.25/VoxelMeters);
+            if(Ground<Cap&&((Ground>=MinZ-Margin&&Ground<=MaxZ+Margin)
+                ||(Cap>=MinZ-Margin&&Cap<=MaxZ+Margin)))return true;
+        }
+        return false;
+    }
+
+    inline FHeightGrid Rasterize(std::span<const FStandaloneCpuTile* const> Tiles,
+        const FVoxelTileKey& Patch,double VoxelMeters,int Side=65)
+    {
+        const double Extent=static_cast<double>(Patch.ExtentVoxels())*VoxelMeters;
+        const double MinX=static_cast<double>(Patch.OriginVoxels().X)*VoxelMeters;
+        const double MinY=static_cast<double>(Patch.OriginVoxels().Y)*VoxelMeters;
+        FHeightGrid Grid(Side,MinX,MinX+Extent,MinY,MinY+Extent);
+        for(const FStandaloneCpuTile* Tile:Tiles)
+        {
+            if(!Tile||Tile->Indices.size()<3)continue;
+            const std::size_t TriangleCount=Tile->Indices.size()/3;
+            for(std::size_t Triangle=0;Triangle<TriangleCount;++Triangle)
+            {
+                if(Triangle<Tile->TriangleSkirtFaceMasks.size()
+                    &&Tile->TriangleSkirtFaceMasks[Triangle]!=0)continue;
+                const std::uint32_t I0=Tile->Indices[Triangle*3];
+                const std::uint32_t I1=Tile->Indices[Triangle*3+1];
+                const std::uint32_t I2=Tile->Indices[Triangle*3+2];
+                if(I0>=Tile->Vertices.size()||I1>=Tile->Vertices.size()||I2>=Tile->Vertices.size())continue;
+                const auto& A=Tile->Vertices[I0].Position;
+                const auto& B=Tile->Vertices[I1].Position;
+                const auto& C=Tile->Vertices[I2].Position;
+                const double Denominator=(B[1]-C[1])*(A[0]-C[0])+(C[0]-B[0])*(A[1]-C[1]);
+                if(std::abs(Denominator)<1e-10)continue;
+                const double MinTriX=std::min({A[0],B[0],C[0]}),MaxTriX=std::max({A[0],B[0],C[0]});
+                const double MinTriY=std::min({A[1],B[1],C[1]}),MaxTriY=std::max({A[1],B[1],C[1]});
+                const double StepX=Extent/(Side-1),StepY=Extent/(Side-1);
+                const int Ix0=std::clamp(static_cast<int>(std::ceil((MinTriX-MinX)/StepX)),0,Side-1);
+                const int Ix1=std::clamp(static_cast<int>(std::floor((MaxTriX-MinX)/StepX)),0,Side-1);
+                const int Iy0=std::clamp(static_cast<int>(std::ceil((MinTriY-MinY)/StepY)),0,Side-1);
+                const int Iy1=std::clamp(static_cast<int>(std::floor((MaxTriY-MinY)/StepY)),0,Side-1);
+                for(int Iy=Iy0;Iy<=Iy1;++Iy)
+                for(int Ix=Ix0;Ix<=Ix1;++Ix)
+                {
+                    const double X=Grid.X(Ix),Y=Grid.Y(Iy);
+                    const double W0=((B[1]-C[1])*(X-C[0])+(C[0]-B[0])*(Y-C[1]))/Denominator;
+                    const double W1=((C[1]-A[1])*(X-C[0])+(A[0]-C[0])*(Y-C[1]))/Denominator;
+                    const double W2=1.0-W0-W1;
+                    if(W0<-1e-6||W1<-1e-6||W2<-1e-6)continue;
+                    Grid.Add(Ix,Iy,W0*A[2]+W1*B[2]+W2*C[2]);
+                }
+            }
+        }
+        for(auto& Values:Grid.Hits)
+        {
+            std::sort(Values.begin(),Values.end());
+            Values.erase(std::unique(Values.begin(),Values.end(),[](double A,double B)
+                {return std::abs(A-B)<0.02;}),Values.end());
+        }
+        return Grid;
+    }
+
+    inline std::vector<FSurfaceRoot> ExactHeightRoots(const FHeightGrid& Grid,int Ix,int Iy,
+        const FVoxelTileKey& Patch,double VoxelMeters,
+        const VoxelForgeCore::WorldAssemblyManifest& Assembly)
+    {
+        std::vector<FSurfaceRoot> Roots;
+        const double XSubvoxels=Grid.X(Ix)/VoxelMeters*256.0;
+        const double YSubvoxels=Grid.Y(Iy)/VoxelMeters*256.0;
+        const auto X=static_cast<std::int64_t>(std::llround(XSubvoxels));
+        const auto Y=static_cast<std::int64_t>(std::llround(YSubvoxels));
+        const double MinZ=static_cast<double>(Patch.OriginVoxels().Z);
+        const double MaxZ=MinZ+Patch.ExtentVoxels();
+        constexpr std::int64_t NormalProbeSubvoxels=256;
+        for(const auto& Plan:Assembly.plan.strates)
+        {
+            VoxelForgeCore::Heightfield2D Field(Assembly.recipe,Plan);
+            if(!Field.isValid())continue;
+            const auto Column=Field.point(X,Y,0);
+            if(Column.groundHeightSubvoxels>=Column.capHeightSubvoxels)continue;
+            const auto XMinus=Field.point(X-NormalProbeSubvoxels,Y,0);
+            const auto XPlus=Field.point(X+NormalProbeSubvoxels,Y,0);
+            const auto YMinus=Field.point(X,Y-NormalProbeSubvoxels,0);
+            const auto YPlus=Field.point(X,Y+NormalProbeSubvoxels,0);
+            const auto Slope=[&](std::int64_t Minus,std::int64_t Plus)
+            {return static_cast<double>(Plus-Minus)/(2.0*NormalProbeSubvoxels);};
+            const double Ground=static_cast<double>(Column.groundHeightSubvoxels)/256.0*VoxelMeters;
+            const double Cap=static_cast<double>(Column.capHeightSubvoxels)/256.0*VoxelMeters;
+            const double PlanMinZ=static_cast<double>(Plan.bottomChunkZ)*32.0*VoxelMeters;
+            const double PlanMaxZ=static_cast<double>(Plan.topChunkZ+1)*32.0*VoxelMeters;
+            if(Ground>=MinZ*VoxelMeters-0.25*VoxelMeters
+                &&Ground<=MaxZ*VoxelMeters+0.25*VoxelMeters
+                &&Ground>=PlanMinZ-0.25*VoxelMeters&&Ground<=PlanMaxZ+0.25*VoxelMeters)
+                Roots.push_back({Ground,Slope(XMinus.groundHeightSubvoxels,
+                    XPlus.groundHeightSubvoxels),Slope(YMinus.groundHeightSubvoxels,
+                    YPlus.groundHeightSubvoxels)});
+            if(Cap>=MinZ*VoxelMeters-0.25*VoxelMeters
+                &&Cap<=MaxZ*VoxelMeters+0.25*VoxelMeters
+                &&Cap>=PlanMinZ-0.25*VoxelMeters&&Cap<=PlanMaxZ+0.25*VoxelMeters)
+                Roots.push_back({Cap,Slope(XMinus.capHeightSubvoxels,
+                    XPlus.capHeightSubvoxels),Slope(YMinus.capHeightSubvoxels,
+                    YPlus.capHeightSubvoxels)});
+        }
+        std::sort(Roots.begin(),Roots.end(),[](const FSurfaceRoot& A,const FSurfaceRoot& B)
+            {return A.ZMeters<B.ZMeters;});
+        Roots.erase(std::unique(Roots.begin(),Roots.end(),[](const FSurfaceRoot& A,
+            const FSurfaceRoot& B){return std::abs(A.ZMeters-B.ZMeters)<0.01;}),Roots.end());
+        return Roots;
+    }
+
+    inline bool MatchNearest(const std::vector<double>& Hits,const std::vector<bool>& Used,
+        double Root,std::size_t& OutIndex,double& OutError)
+    {
+        double Best=std::numeric_limits<double>::infinity();std::size_t BestIndex=Hits.size();
+        for(std::size_t I=0;I<Hits.size();++I)
+            if(I>=Used.size()||!Used[I])
+            {
+                const double Error=std::abs(Hits[I]-Root);
+                if(Error<Best){Best=Error;BestIndex=I;}
+            }
+        if(BestIndex==Hits.size())return false;
+        OutIndex=BestIndex;OutError=Best;return true;
+    }
+
+    inline FErrorRow CompareToExact(const FHeightGrid& MeshGrid,const FVoxelTileKey& Patch,
+        double VoxelMeters,double PixelBudgetMeters,
+        const VoxelForgeCore::WorldAssemblyManifest& Assembly,const FViewBasis& View)
+    {
+        FErrorRow Row;Row.Lod=Patch.Level;Row.Valid=true;
+        FErrorAccumulator Accumulator;
+        for(int Iy=0;Iy<MeshGrid.Side;++Iy)
+        for(int Ix=0;Ix<MeshGrid.Side;++Ix)
+        {
+            const auto Roots=ExactHeightRoots(MeshGrid,Ix,Iy,Patch,VoxelMeters,Assembly);
+            if(Roots.empty()&&MeshGrid.At(Ix,Iy).empty())continue;
+            std::vector<bool> Used(MeshGrid.At(Ix,Iy).size(),false);
+            for(const FSurfaceRoot& Root:Roots)
+            {
+                std::size_t HitIndex=0;double ErrorMeters=0.0;
+                if(!MatchNearest(MeshGrid.At(Ix,Iy),Used,Root.ZMeters,HitIndex,ErrorMeters))
+                {
+                    ++Row.Missing;
+                    AddMissing(Accumulator);
+                    continue;
+                }
+                Used[HitIndex]=true;
+                AddError(Accumulator,MeshGrid.At(Ix,Iy)[HitIndex]-Root.ZMeters,
+                    Root,PixelBudgetMeters,View,MeshGrid.X(Ix),MeshGrid.Y(Iy));
+                ++Row.Samples;
+            }
+            // Heightfield2D declares ground and cap roots only. Other mesh intersections may
+            // be valid tunnel geometry; the exact-mesh comparison checks extra pieces.
+        }
+        FinalizeError(Row,Accumulator);
+        return Row;
+    }
+
+    inline FErrorRow CompareToReference(const FHeightGrid& MeshGrid,
+        const FHeightGrid& ReferenceGrid,const FVoxelTileKey& Patch,double VoxelMeters,
+        double PixelBudgetMeters,const VoxelForgeCore::WorldAssemblyManifest& Assembly,
+        const FViewBasis& View)
+    {
+        FErrorRow Row;Row.Lod=Patch.Level;Row.Valid=true;
+        FErrorAccumulator Accumulator;
+        for(int Iy=0;Iy<ReferenceGrid.Side;++Iy)
+        for(int Ix=0;Ix<ReferenceGrid.Side;++Ix)
+        {
+            const auto& Reference=ReferenceGrid.At(Ix,Iy);
+            const auto& Mesh=MeshGrid.At(Ix,Iy);
+            if(Reference.empty()&&Mesh.empty())continue;
+            const auto Roots=ExactHeightRoots(ReferenceGrid,Ix,Iy,Patch,VoxelMeters,Assembly);
+            std::vector<bool> UsedReference(Reference.size(),false),UsedMesh(Mesh.size(),false);
+            for(std::size_t ReferenceIndex=0;ReferenceIndex<Reference.size();++ReferenceIndex)
+            {
+                const double ReferenceZ=Reference[ReferenceIndex];
+                UsedReference[ReferenceIndex]=true;
+                std::size_t MeshIndex=0;double MeshError=0.0;
+                if(!MatchNearest(Mesh,UsedMesh,ReferenceZ,MeshIndex,MeshError))
+                {
+                    ++Row.Missing;AddMissing(Accumulator);continue;
+                }
+                UsedMesh[MeshIndex]=true;
+                FSurfaceRoot Root{ReferenceZ,0.0,0.0};
+                if(!Roots.empty())
+                {
+                    const auto BestRoot=std::min_element(Roots.begin(),Roots.end(),
+                        [ReferenceZ](const FSurfaceRoot& A,const FSurfaceRoot& B)
+                        {return std::abs(A.ZMeters-ReferenceZ)<std::abs(B.ZMeters-ReferenceZ);});
+                    if(BestRoot!=Roots.end()&&std::abs(BestRoot->ZMeters-ReferenceZ)<1.0)
+                        Root=*BestRoot;
+                }
+                AddError(Accumulator,Mesh[MeshIndex]-Reference[ReferenceIndex],
+                    Root,PixelBudgetMeters,View,ReferenceGrid.X(Ix),ReferenceGrid.Y(Iy));
+            }
+            for(std::size_t I=0;I<Mesh.size();++I)
+                if(!UsedMesh[I]){++Row.Floating;AddMissing(Accumulator);}
+        }
+        FinalizeError(Row,Accumulator);
+        return Row;
+    }
+
+    inline FPopRow ComparePop(const FHeightGrid& Coarse,const FHeightGrid& Fine,
+        const FVoxelTileKey& Patch,double VoxelMeters,double PixelBudgetMeters,
+        const VoxelForgeCore::WorldAssemblyManifest& Assembly,const FViewBasis& View)
+    {
+        FPopRow Row;Row.CoarseLod=Patch.Level;Row.Valid=true;
+        FErrorAccumulator Accumulator;
+        for(int Iy=0;Iy<Coarse.Side;++Iy)
+        for(int Ix=0;Ix<Coarse.Side;++Ix)
+        {
+            const auto& CoarseHits=Coarse.At(Ix,Iy);
+            const auto& FineHits=Fine.At(Ix,Iy);
+            const auto Roots=ExactHeightRoots(Coarse,Ix,Iy,Patch,VoxelMeters,Assembly);
+            if(Roots.empty()&&CoarseHits.empty()&&FineHits.empty())continue;
+            std::vector<bool> CoarseUsed(CoarseHits.size(),false);
+            std::vector<bool> FineUsed(FineHits.size(),false);
+            for(const FSurfaceRoot& Root:Roots)
+            {
+                std::size_t CoarseIndex=0,FineIndex=0;
+                double CoarseError=0.0,FineError=0.0;
+                if(!MatchNearest(CoarseHits,CoarseUsed,Root.ZMeters,CoarseIndex,CoarseError)
+                    ||!MatchNearest(FineHits,FineUsed,Root.ZMeters,FineIndex,FineError))
+                {
+                    ++Row.Cracks;AddMissing(Accumulator);continue;
+                }
+                CoarseUsed[CoarseIndex]=true;
+                FineUsed[FineIndex]=true;
+                AddError(Accumulator,CoarseHits[CoarseIndex]-FineHits[FineIndex],
+                    Root,PixelBudgetMeters,View,Coarse.X(Ix),Coarse.Y(Iy));
+                ++Row.Samples;
+            }
+        }
+        FErrorRow Stats;Stats.Lod=Patch.Level;Stats.Valid=true;
+        FinalizeError(Stats,Accumulator);
+        Row.Samples=Stats.Samples;Row.P50=Stats.P50;Row.P99=Stats.P99;Row.Maximum=Stats.Maximum;
+        Row.VerticalP50=Stats.VerticalP50;Row.VerticalP99=Stats.VerticalP99;
+        Row.VerticalMaximum=Stats.VerticalMaximum;
+        Row.MaximumNormalDistanceMeters=Stats.MaximumNormalDistanceMeters;
+        Row.MaximumX=Stats.MaximumX;Row.MaximumY=Stats.MaximumY;
+        Row.MaximumReferenceZ=Stats.MaximumReferenceZ;
+        Row.MaximumDisplayedZ=Stats.MaximumDisplayedZ;
+        Row.MaximumSlopeDegrees=Stats.MaximumSlopeDegrees;
+        Row.SlopeSamples=Stats.SlopeSamples;Row.SlopeP99=Stats.SlopeP99;
+        Row.SlopeMaximum=Stats.SlopeMaximum;
+        return Row;
+    }
+
+    inline std::array<double,9> ClosestDisplayedDistancesMeters(
+        const FStandaloneOwnerWorld& World,const FVector& CameraVoxels,
+        std::uint32_t VoxelSizeMicrons)
+    {
+        const double VoxelMeters=static_cast<double>(VoxelSizeMicrons)/1000000.0;
+        std::array<double,9> Minimums{};
+        Minimums.fill(std::numeric_limits<double>::infinity());
+        for(int Lod=0;Lod<=8;++Lod)
+        {
+            const int PhaseCount=1<<Lod;
+            for(int Phase=0;Phase<PhaseCount;++Phase)
+            {
+                FVector Probe=CameraVoxels;
+                Probe.X=static_cast<float>(Phase*32.0+32.0-1.0/256.0);
+                const FStandaloneDesiredTileSet Desired=StandaloneWorldMesher::BuildDesiredSet(World,Probe);
+                for(const FVoxelTileKey& Tile:Desired.Tiles)
+                {
+                    if(Tile.Level!=Lod)continue;
+                    Minimums[Lod]=std::min(Minimums[Lod],
+                        TileAabbDistanceMeters(Tile,Probe,VoxelMeters));
+                }
+            }
+        }
+        for(double& Distance:Minimums)
+            if(!std::isfinite(Distance))Distance=0.0;
+        return Minimums;
+    }
+
+    inline std::array<double,9> ClipmapClosestDisplayedDistancesMeters(
+        const FStandaloneOwnerWorld& World,std::uint32_t VoxelSizeMicrons)
+    {
+        const double VoxelMeters=static_cast<double>(VoxelSizeMicrons)/1000000.0;
+        std::array<double,9> Distances{};
+        for(int Lod=1;Lod<=8;++Lod)
+            Distances[Lod]=static_cast<double>(World.ClipRadius)
+                *static_cast<double>(CHUNK_SIZE)*(1ull<<(Lod-1))*VoxelMeters;
+        return Distances;
+    }
+
+    inline void PrintSlopeTail(const char* Kind,int Lod,const std::array<std::uint64_t,4>& Counts,
+        const std::array<double,4>& P99,const std::array<double,4>& Maximum)
+    {
+        constexpr const char* Labels[4]={"lt30","30to45","45to60","ge60"};
+        for(std::size_t Bin=0;Bin<Counts.size();++Bin)
+            std::printf("[ScreenSpaceSlopeTail] kind=%s lod=%d slope_deg=%s samples=%llu p99_px=%.4f max_px=%.4f\n",
+                Kind,Lod,Labels[Bin],static_cast<unsigned long long>(Counts[Bin]),P99[Bin],Maximum[Bin]);
+    }
+
+    inline void PrintKnownFailureControl(double CellMeters,double DisplayDistanceMeters,
+        const FViewBasis& View)
+    {
+        constexpr double Slope=100.0;
+        const double LateralMeters=CellMeters/200.0;
+        const double VerticalMeters=Slope*LateralMeters;
+        const double NormalLength=std::sqrt(1.0+Slope*Slope);
+        const double NormalDistance=VerticalMeters/NormalLength;
+        const std::array<double,3> Normal={-Slope/NormalLength,0.0,1.0/NormalLength};
+        const double ProjectedNormal=std::hypot(
+            Normal[0]*View.Right[0]+Normal[1]*View.Right[1]+Normal[2]*View.Right[2],
+            Normal[0]*View.Up[0]+Normal[1]*View.Up[1]+Normal[2]*View.Up[2]);
+        const double PixelBudgetMeters=DisplayDistanceMeters*OnePixelRadians;
+        const double VerticalPixels=VerticalMeters/PixelBudgetMeters;
+        const double NormalPixels=NormalDistance*ProjectedNormal/PixelBudgetMeters;
+        const bool Passed=VerticalPixels>4.0&&NormalPixels<1.0;
+        std::printf("[ScreenSpaceKnownFailureControl] case=steep-plane-lateral-offset slope_deg=%.4f cell_m=%.6f lateral_m=%.6f cell_fraction=%.6f vertical_error_m=%.6f vertical_height_px=%.4f closest_normal_m=%.6f projected_normal_px=%.4f status=%s\n",
+            std::atan(Slope)*180.0/3.14159265358979323846,CellMeters,LateralMeters,
+            LateralMeters/CellMeters,VerticalMeters,VerticalPixels,NormalDistance,NormalPixels,
+            Passed?"EXPECTED_VERTICAL_FALSE_POSITIVE":"CONTROL_FAILED");
+    }
+
+    inline bool Run(const std::array<std::optional<FStandaloneCpuTile>,9>& SampleTiles,
+        FStandaloneStreamingGenerator& Streamer,
+        const VoxelForgeCore::WorldAssemblyManifest& Assembly,
+        const std::array<double,9>& Distances,std::uint32_t VoxelSizeMicrons,int MaxLod,
+        const std::array<std::int64_t,9>& PixelBudgetsSubvoxels,
+        double CameraYawDegrees,double CameraPitchDegrees)
+    {
+        const double VoxelMeters=static_cast<double>(VoxelSizeMicrons)/1000000.0;
+        const FViewBasis View=MakeViewBasis(CameraYawDegrees,CameraPitchDegrees);
+        std::array<double,9> Budgets{};
+        std::array<FErrorRow,9> ErrorRows{};
+        std::array<FPopRow,9> PopRows{};
+        bool GatePass=true;
+        std::printf("[ScreenSpaceGate] angular_pixel=%.9f rad (horizontal_fov=90deg,width=2560) lod>=3_limit=1.0px sampling=65x65 skirts=excluded metric=local_surface_normal_projected field_reference=direct-Heightfield2D-roots normal_probe_vox=1 view_yaw_deg=%.3f view_pitch_deg=%.3f\n",
+            OnePixelRadians,CameraYawDegrees,CameraPitchDegrees);
+        for(int Lod=0;Lod<=MaxLod&&Lod<9;++Lod)
+        {
+            Budgets[Lod]=Distances[Lod]*OnePixelRadians;
+            std::printf("[ScreenSpaceDistance] lod=%d closest_m=%.3f pixel_budget_m=%.6f pixel_budget_cm=%.3f pixel_budget_subvoxels=%lld rule=%s\n",
+                Lod,Distances[Lod],Budgets[Lod],Budgets[Lod]*100.0,
+                static_cast<long long>(PixelBudgetsSubvoxels[Lod]),Lod<3?"exact-2cm":"1px");
+        }
+        const double LOD3CellMeters=static_cast<double>(CHUNK_SIZE*(1<<3))*VoxelMeters/64.0;
+        PrintKnownFailureControl(LOD3CellMeters,Distances[3],View);
+        VoxelForgeCore::Heightfield2D::resetThreadColumnCacheStats(false,true,0);
+        for(int Lod=3;Lod<=MaxLod&&Lod<9;++Lod)
+        {
+            if(!SampleTiles[Lod]||SampleTiles[Lod]->Vertices.empty())
+            {
+                std::printf("[ScreenSpaceGateLOD] lod=%d status=NO_SURFACE_TILE\n",Lod);
+                GatePass=false;continue;
+            }
+            const FStandaloneCpuTile& CoarseTile=*SampleTiles[Lod];
+            const FStandaloneCpuTile* CoarsePtr=&CoarseTile;
+            const std::span<const FStandaloneCpuTile* const> CoarseSpan(&CoarsePtr,1);
+            const FHeightGrid CoarseGrid=Rasterize(CoarseSpan,CoarseTile.Key,VoxelMeters);
+            const FStandaloneCpuTile ExactTile=Streamer.GenerateDiagnostic(
+                CoarseTile.Key,0,1,true);
+            const FStandaloneCpuTile* ExactPointer=&ExactTile;
+            const std::span<const FStandaloneCpuTile* const> ExactSpan(&ExactPointer,1);
+            const FHeightGrid ExactGrid=Rasterize(ExactSpan,ExactTile.Key,VoxelMeters);
+            ErrorRows[Lod]=CompareToReference(CoarseGrid,ExactGrid,CoarseTile.Key,VoxelMeters,
+                Budgets[Lod],Assembly,View);
+            const FErrorRow& Error=ErrorRows[Lod];
+            const bool LodPass=Error.Valid&&Error.Missing==0&&Error.Floating==0
+                &&Error.Samples>=16&&Error.Maximum<=1.0;
+            GatePass=GatePass&&LodPass;
+            std::printf("[ScreenSpaceGateLOD] lod=%d key=(%d,%d,%d) samples=%llu normal_px_p50=%.4f p99=%.4f max=%.4f vertical_px_p50=%.4f p99=%.4f max=%.4f max_normal_m=%.6f max_xy_m=(%.3f,%.3f) max_slope_deg=%.2f missing=%llu floating=%llu status=%s\n",
+                Lod,CoarseTile.Key.Coord.X,CoarseTile.Key.Coord.Y,CoarseTile.Key.Coord.Z,
+                static_cast<unsigned long long>(Error.Samples),Error.P50,Error.P99,Error.Maximum,
+                Error.VerticalP50,Error.VerticalP99,Error.VerticalMaximum,
+                Error.MaximumNormalDistanceMeters,Error.MaximumX,Error.MaximumY,
+                Error.MaximumSlopeDegrees,
+                static_cast<unsigned long long>(Error.Missing),static_cast<unsigned long long>(Error.Floating),
+                LodPass?"PASS":"REJECT");
+            PrintSlopeTail("same_lod",Lod,Error.SlopeSamples,Error.SlopeP99,Error.SlopeMaximum);
+
+            const FErrorRow FieldError=CompareToExact(CoarseGrid,CoarseTile.Key,VoxelMeters,
+                Budgets[Lod],Assembly,View);
+            const bool FieldPass=FieldError.Valid&&FieldError.Missing==0&&FieldError.Floating==0
+                &&FieldError.Samples>=16&&FieldError.Maximum<=1.0;
+            GatePass=GatePass&&FieldPass;
+            std::printf("[ScreenSpaceGateFieldLOD] lod=%d samples=%llu normal_px_p50=%.4f p99=%.4f max=%.4f vertical_px_p50=%.4f p99=%.4f max=%.4f max_normal_m=%.6f max_xyz_m=(%.3f,%.3f,%.3f) max_slope_deg=%.2f missing=%llu floating=%llu status=%s\n",
+                Lod,static_cast<unsigned long long>(FieldError.Samples),FieldError.P50,
+                FieldError.P99,FieldError.Maximum,FieldError.VerticalP50,FieldError.VerticalP99,
+                FieldError.VerticalMaximum,FieldError.MaximumNormalDistanceMeters,
+                FieldError.MaximumX,FieldError.MaximumY,FieldError.MaximumDisplayedZ,
+                FieldError.MaximumSlopeDegrees,
+                static_cast<unsigned long long>(FieldError.Missing),
+                static_cast<unsigned long long>(FieldError.Floating),FieldPass?"PASS":"REJECT");
+            PrintSlopeTail("field",Lod,FieldError.SlopeSamples,FieldError.SlopeP99,
+                FieldError.SlopeMaximum);
+
+            bool FaultControlsPass=true;
+            const FHeightGrid MissingGrid(ExactGrid.Side,ExactGrid.MinimumX,ExactGrid.MaximumX,
+                ExactGrid.MinimumY,ExactGrid.MaximumY);
+            const FErrorRow MissingError=CompareToReference(MissingGrid,ExactGrid,
+                CoarseTile.Key,VoxelMeters,Budgets[Lod],Assembly,View);
+            const bool MissingRejected=MissingError.Missing>0&&MissingError.Maximum>1.0;
+            FaultControlsPass=FaultControlsPass&&MissingRejected;
+            std::printf("[ScreenSpaceFaultInjection] lod=%d case=missing-displayed-surface missing=%llu status=%s\n",
+                Lod,static_cast<unsigned long long>(MissingError.Missing),
+                MissingRejected?"REJECTED_AS_REQUIRED":"GATE_FALSE_NEGATIVE");
+
+            FStandaloneCpuTile FloatingTile=CoarseTile;
+            const std::uint32_t FloatingVertexBase=static_cast<std::uint32_t>(FloatingTile.Vertices.size());
+            for(FStandaloneCpuVertex Vertex:CoarseTile.Vertices)
+            {
+                Vertex.Position[2]+=2.0f;
+                FloatingTile.Vertices.push_back(Vertex);
+            }
+            for(const std::uint32_t Index:CoarseTile.Indices)
+                FloatingTile.Indices.push_back(FloatingVertexBase+Index);
+            FloatingTile.TriangleSkirtFaceMasks.insert(FloatingTile.TriangleSkirtFaceMasks.end(),
+                CoarseTile.TriangleSkirtFaceMasks.begin(),CoarseTile.TriangleSkirtFaceMasks.end());
+            const FStandaloneCpuTile* FloatingPointer=&FloatingTile;
+            const std::span<const FStandaloneCpuTile* const> FloatingSpan(&FloatingPointer,1);
+            const FHeightGrid FloatingGrid=Rasterize(FloatingSpan,CoarseTile.Key,VoxelMeters);
+            const FErrorRow FloatingError=CompareToReference(FloatingGrid,ExactGrid,
+                CoarseTile.Key,VoxelMeters,Budgets[Lod],Assembly,View);
+            const bool FloatingRejected=FloatingError.Floating>0||FloatingError.Maximum>1.0;
+            FaultControlsPass=FaultControlsPass&&FloatingRejected;
+            std::printf("[ScreenSpaceFaultInjection] lod=%d case=2m-floating-surface floating=%llu max_px=%.4f status=%s\n",
+                Lod,static_cast<unsigned long long>(FloatingError.Floating),FloatingError.Maximum,
+                FloatingRejected?"REJECTED_AS_REQUIRED":"GATE_FALSE_NEGATIVE");
+
+            std::vector<FStandaloneCpuTile> FineTiles;
+            FineTiles.reserve(8);
+            for(int Dz=0;Dz<=1;++Dz)
+            for(int Dy=0;Dy<=1;++Dy)
+            for(int Dx=0;Dx<=1;++Dx)
+            {
+                const FVoxelTileKey FineKey(FIntVector(2*CoarseTile.Key.Coord.X+Dx,
+                    2*CoarseTile.Key.Coord.Y+Dy,2*CoarseTile.Key.Coord.Z+Dz),Lod-1);
+                FStandaloneCpuTile FineTile=Streamer.GenerateDiagnostic(FineKey);
+                if(!FineTile.Vertices.empty())FineTiles.push_back(std::move(FineTile));
+            }
+            std::vector<const FStandaloneCpuTile*> FinePointers;
+            FinePointers.reserve(FineTiles.size());
+            for(const auto& Tile:FineTiles)FinePointers.push_back(&Tile);
+            const auto FineSpan=std::span<const FStandaloneCpuTile* const>(
+                FinePointers.data(),FinePointers.size());
+            const FHeightGrid FineGrid=Rasterize(FineSpan,CoarseTile.Key,VoxelMeters);
+            PopRows[Lod]=ComparePop(CoarseGrid,FineGrid,CoarseTile.Key,VoxelMeters,
+                Budgets[Lod],Assembly,View);
+            const FPopRow& Pop=PopRows[Lod];
+            const bool PopPass=Pop.Valid&&Pop.Cracks==0&&Pop.Floating==0&&Pop.Maximum<=1.0;
+            GatePass=GatePass&&PopPass;
+            std::printf("[ScreenSpaceSwap] lod=%d_to_%d samples=%llu normal_px_p50=%.4f p99=%.4f max=%.4f vertical_px_p50=%.4f p99=%.4f max=%.4f max_normal_m=%.6f max_xyz_m=(%.3f,%.3f,%.3f) max_slope_deg=%.2f cracks=%llu floating=%llu status=%s\n",
+                Lod,Lod-1,static_cast<unsigned long long>(Pop.Samples),
+                Pop.P50,Pop.P99,Pop.Maximum,Pop.VerticalP50,Pop.VerticalP99,Pop.VerticalMaximum,
+                Pop.MaximumNormalDistanceMeters,Pop.MaximumX,Pop.MaximumY,
+                Pop.MaximumDisplayedZ,
+                Pop.MaximumSlopeDegrees,static_cast<unsigned long long>(Pop.Cracks),
+                static_cast<unsigned long long>(Pop.Floating),
+                PopPass?"PASS":"REJECT");
+            PrintSlopeTail("swap",Lod,Pop.SlopeSamples,Pop.SlopeP99,Pop.SlopeMaximum);
+
+            const FHeightGrid MissingFineGrid(CoarseGrid.Side,CoarseGrid.MinimumX,
+                CoarseGrid.MaximumX,CoarseGrid.MinimumY,CoarseGrid.MaximumY);
+            const FPopRow MissingFineError=ComparePop(CoarseGrid,MissingFineGrid,
+                CoarseTile.Key,VoxelMeters,Budgets[Lod],Assembly,View);
+            const bool CrackRejected=MissingFineError.Cracks>0&&MissingFineError.Maximum>1.0;
+            FaultControlsPass=FaultControlsPass&&CrackRejected;
+            GatePass=GatePass&&FaultControlsPass;
+            std::printf("[ScreenSpaceFaultInjection] lod=%d case=missing-fine-ring-surface cracks=%llu max_px=%.4f status=%s\n",
+                Lod,static_cast<unsigned long long>(MissingFineError.Cracks),
+                MissingFineError.Maximum,CrackRejected?"REJECTED_AS_REQUIRED":"GATE_FALSE_NEGATIVE");
+
+            bool NegativeControlsPass=true;
+            const auto CheckNegative=[&](const char* Name,std::uint32_t Drop,std::uint32_t Stride)
+            {
+                FStandaloneCpuTile Bad=Streamer.GenerateDiagnostic(
+                    CoarseTile.Key,Drop,Stride,true);
+                const FStandaloneCpuTile* BadPointer=&Bad;
+                const std::span<const FStandaloneCpuTile* const> BadSpan(&BadPointer,1);
+                const FHeightGrid BadGrid=Rasterize(BadSpan,Bad.Key,VoxelMeters);
+                const FErrorRow BadError=CompareToReference(BadGrid,ExactGrid,
+                    CoarseTile.Key,VoxelMeters,Budgets[Lod],Assembly,View);
+                const bool Rejected=BadError.Missing>0||BadError.Floating>0
+                    ||BadError.Samples<16||BadError.Maximum>1.0;
+                NegativeControlsPass=NegativeControlsPass&&Rejected;
+                std::printf("[ScreenSpaceNegative] lod=%d case=%s p50_px=%.4f p99_px=%.4f max_px=%.4f missing=%llu floating=%llu status=%s\n",
+                    Lod,Name,BadError.P50,BadError.P99,BadError.Maximum,
+                    static_cast<unsigned long long>(BadError.Missing),
+                    static_cast<unsigned long long>(BadError.Floating),
+                    Rejected?"REJECTED_AS_REQUIRED":"GATE_FALSE_NEGATIVE");
+            };
+            CheckNegative("s13-global-octave-drop",1,1);
+            CheckNegative("stride-2-column-interpolation",0,2);
+            GatePass=GatePass&&NegativeControlsPass;
+        }
+        std::printf("[ScreenSpaceGateResult] status=%s\n",GatePass?"PASS":"REJECT");
+        return GatePass;
+    }
+}
+

Standalone/Source/StandaloneTlsProbe.h

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "StandaloneWorkerThread.h"
+#include "VoxelForgeCore/VoxelForgeCore.h"
 
 #include <algorithm>
 #include <atomic>
@@ -10,12 +11,15 @@
 #include <cstdint>
 #include <fstream>
 #include <mutex>
+#include <numeric>
 #include <string>
+#include <string_view>
 #include <thread>
 #include <vector>
 
 #if defined(__linux__)
 #include <unistd.h>
+#include <sys/resource.h>
 #endif
 
 namespace StandaloneTlsProbe
@@ -38,14 +42,58 @@ namespace StandaloneTlsProbe
             residentPages*static_cast<std::uint64_t>(pageSize)/1024};
     }
 
-    inline int Run(int workerCount)
+    inline int Run(int workerCount,std::string_view touchKind="none")
     {
         workerCount=std::clamp(workerCount,0,12);
+        VoxelForgeCore::WorldAssemblyRecipeV1 surfaceRecipe;
+        VoxelForgeCore::WorldAssemblyStratumPlanV1 surfacePlan;
+        VoxelForgeCore::Heightfield2D surfaceField(surfaceRecipe,surfacePlan);
+        if(touchKind=="surface-world")
+        {
+            VoxelForgeCore::WorldAssemblyBiomeProfileV1 biome;
+            biome.stableId=1;
+            surfaceRecipe.biomes.push_back(biome);
+            surfacePlan.strateIndex=0;
+            surfacePlan.topChunkZ=1;
+            surfacePlan.bottomChunkZ=-1;
+            surfaceField=VoxelForgeCore::Heightfield2D(surfaceRecipe,surfacePlan);
+            if(!surfaceField.isValid())
+            {
+                std::fprintf(stderr,"[TlsProbe] invalid synthetic SurfaceWorld cache probe input\n");
+                return 2;
+            }
+        }
+        VoxelForgeCore::FloatingIslandRecipeV1 islandRecipe;
+        VoxelForgeCore::FloatingIslandPlanV1 islandPlan;
+        for(std::uint32_t index=0;index<islandRecipe.primaryIslandCount;++index)
+        {
+            VoxelForgeCore::FloatingIslandAnchorV1 island;
+            island.stableId=index+1;
+            island.ordinal=index;
+            island.centerSubvoxels={static_cast<std::int64_t>(index)*64*256,0,0};
+            island.radiusSubvoxels=20*256;
+            island.topHalfSubvoxels=20*256;
+            island.topZSubvoxels=0;
+            island.bottomZSubvoxels=-80*256;
+            island.taperEndQ16=islandRecipe.taperEndMinimumQ16;
+            islandPlan.islands.push_back(island);
+        }
+        VoxelForgeCore::FloatingIslandFieldV1 islandField(islandRecipe,islandPlan);
+        if(touchKind=="floating-islands"&&!islandField.isValid())
+        {
+            std::fprintf(stderr,"[TlsProbe] invalid synthetic FloatingIslands cache probe input\n");
+            return 2;
+        }
         std::mutex mutex;
         std::condition_variable changed;
         bool release=false;
+        bool touchRequested=false;
         std::atomic<int> ready{0};
+        std::atomic<int> touchReady{0};
         std::vector<FStandaloneWorkerThread> workers;
+        std::vector<long> startupMinorFaults(static_cast<std::size_t>(workerCount),0);
+        std::vector<long> firstTouchMinorFaults(static_cast<std::size_t>(workerCount),0);
+        std::vector<std::int64_t> checksums(static_cast<std::size_t>(workerCount),0);
         workers.reserve(static_cast<std::size_t>(workerCount));
         FMemorySample previous=ReadMemory();
         std::printf("[TlsProbe] workers=0 create_ms=0.000 rss_kib=%llu rss_delta_kib=0 vms_kib=%llu stack_bytes=%zu\n",
@@ -55,10 +103,47 @@ namespace StandaloneTlsProbe
         for(int index=1;index<=workerCount;++index)
         {
             const auto start=std::chrono::steady_clock::now();
-            workers.emplace_back([&]
+            workers.emplace_back([&,index]
             {
+#if defined(__linux__)
+                rusage startupUsage{};
+                getrusage(RUSAGE_THREAD,&startupUsage);
+                startupMinorFaults[static_cast<std::size_t>(index-1)]=startupUsage.ru_minflt;
+#endif
                 ready.fetch_add(1,std::memory_order_release);
                 changed.notify_all();
+                {
+                    std::unique_lock lock(mutex);
+                    changed.wait(lock,[&]{return touchRequested||release;});
+                }
+                if(touchRequested)
+                {
+#if defined(__linux__)
+                    rusage beforeTouch{};
+                    rusage afterTouch{};
+                    getrusage(RUSAGE_THREAD,&beforeTouch);
+#endif
+                    std::int64_t checksum=0;
+                    if(touchKind=="surface-world")
+                    {
+                        for(int sample=0;sample<4;++sample)
+                            checksum+=surfaceField.point((index*4+sample)*256,0,0).densitySubvoxels;
+                    }
+                    else if(touchKind=="floating-islands")
+                    {
+                        for(int sample=0;sample<4;++sample)
+                            checksum+=islandField.densitySubvoxels(
+                                (index*4+sample)*256,0,-20*256);
+                    }
+                    checksums[static_cast<std::size_t>(index-1)]=checksum;
+#if defined(__linux__)
+                    getrusage(RUSAGE_THREAD,&afterTouch);
+                    firstTouchMinorFaults[static_cast<std::size_t>(index-1)]=
+                        afterTouch.ru_minflt-beforeTouch.ru_minflt;
+#endif
+                    touchReady.fetch_add(1,std::memory_order_release);
+                    changed.notify_all();
+                }
                 std::unique_lock lock(mutex);
                 changed.wait(lock,[&]{return release;});
             });
@@ -76,6 +161,33 @@ namespace StandaloneTlsProbe
                 static_cast<long long>(rssDelta),static_cast<unsigned long long>(current.virtualKiB));
             previous=current;
         }
+        const FMemorySample beforeTouch=ReadMemory();
+        std::printf("[TlsProbeTouch] kind=%.*s rss_before_kib=%llu\n",
+            static_cast<int>(touchKind.size()),touchKind.data(),
+            static_cast<unsigned long long>(beforeTouch.residentKiB));
+        if(touchKind!="none")
+        {
+            {
+                std::lock_guard lock(mutex);
+                touchRequested=true;
+            }
+            changed.notify_all();
+            {
+                std::unique_lock lock(mutex);
+                changed.wait(lock,[&]{return touchReady.load(std::memory_order_acquire)==workerCount;});
+            }
+            const FMemorySample afterTouch=ReadMemory();
+            std::printf("[TlsProbeTouch] kind=%.*s rss_after_kib=%llu rss_delta_kib=%lld checksum_sum=%lld\n",
+                static_cast<int>(touchKind.size()),touchKind.data(),
+                static_cast<unsigned long long>(afterTouch.residentKiB),
+                static_cast<long long>(static_cast<std::int64_t>(afterTouch.residentKiB)
+                    -static_cast<std::int64_t>(beforeTouch.residentKiB)),
+                static_cast<long long>(std::accumulate(checksums.begin(),checksums.end(),std::int64_t{0})));
+            for(int index=0;index<workerCount;++index)
+                std::printf("[TlsProbeTouch] worker=%d startup_minor_faults=%ld first_touch_minor_faults=%ld\n",
+                    index+1,startupMinorFaults[static_cast<std::size_t>(index)],
+                    firstTouchMinorFaults[static_cast<std::size_t>(index)]);
+        }
         {
             std::lock_guard lock(mutex);
             release=true;
@@ -86,7 +198,7 @@ namespace StandaloneTlsProbe
         return 0;
     }
 #else
-    inline int Run(int)
+    inline int Run(int,std::string_view="none")
     {
         std::fprintf(stderr,"TLS probe is Linux-only.\n");
         return 2;

Standalone/Source/StandaloneWorkerThread.h

@@ -12,13 +12,13 @@
 #include <pthread.h>
 #endif
 
-// Linux's static TLS image is larger than the default pthread stack in this standalone build.
+// Keep host-owned Linux workers on the ordinary 8 MiB stack size. Core's large caches now live
-// Give only host-owned generation workers enough stack for that TLS plus normal call frames.
+// behind lazy thread-local handles, so they no longer need to be hidden by oversized stacks.
 #if defined(__linux__)
 class FStandaloneWorkerThread
 {
 public:
-    static constexpr std::size_t StackSizeBytes=32u*1024u*1024u;
+    static constexpr std::size_t StackSizeBytes=8u*1024u*1024u;
 
     FStandaloneWorkerThread()=default;
 

Standalone/Source/StreamBenchmarkHeadless.cpp

@@ -7,12 +7,15 @@
 
 #include <algorithm>
 #include <chrono>
+#include <cmath>
+#include <cstdint>
 #include <cstdio>
 #include <cstdlib>
 #include <filesystem>
 #include <fstream>
 #include <iostream>
 #include <iterator>
+#include <limits>
 #include <memory>
 #include <string>
 #include <string_view>
@@ -33,6 +36,8 @@ namespace
         bool StreamHash=false;
         bool ProfileColumnOverlap=false;
         bool ForceGenerate=false;
+        bool MeshCoverage=false;
+        bool ScreenSpaceGate=false;
         bool HasSeedOverride=false;
         int SeedOverride=0;
         bool HasRenderDistanceOverride=false;
@@ -40,8 +45,13 @@ namespace
         bool FloatingIslandsRecipe=false;
         bool TlsProbeRequested=false;
         int TlsProbeWorkers=0;
+        std::string TlsProbeTouch="none";
         bool HasCamera=false;
+        bool AutoSurfaceCamera=false;
         FVector CameraMeters=FVector::ZeroVector;
+        float CameraYawDegrees=0.0f;
+        float CameraPitchDegrees=0.0f;
+        std::filesystem::path MeshExportPath;
     };
 
     bool ParseInteger(std::string_view text,int& output)
@@ -55,13 +65,15 @@ namespace
         return true;
     }
 
-    bool ParseCamera(std::string_view text,FVector& meters)
+    bool ParseCamera(std::string_view text,FVector& meters,float& yawDegrees,float& pitchDegrees)
     {
         const std::string values(text);
         float x=0.0f,y=0.0f,z=0.0f,yaw=0.0f,pitch=0.0f;
         if(std::sscanf(values.c_str(),"%f,%f,%f,%f,%f",&x,&y,&z,&yaw,&pitch)!=5)
             return false;
         meters={x,y,z};
+        yawDegrees=yaw;
+        pitchDegrees=pitch;
         return true;
     }
 
@@ -79,10 +91,15 @@ namespace
                 std::printf("Usage: %s [owner_world.json] --world-assembler-prototype --stream-benchmark --stream-pipeline [options]\n"
                     "  --workers=N --clip-radius=N --max-clip-level=N --max-level=N\n"
                     "  --camera=X,Y,Z,YAW,PITCH (position in metres) --stream-hash\n"
+                    "  --mesh-export=FILE (write the exact generated tile meshes for offline rendering)\n"
                     "  --profile-column-overlap --far-horizon-lod8-step=N --force-generate\n"
                     "  --seed=N --recipe=surface-world|floating-islands\n"
+                    "  --auto-surface-camera (place the 27-tile cube on this seed's surface)\n"
+                    "  --mesh-coverage (report non-empty tiles and indexed triangles)\n"
+                    "  --screen-space-gate (measure display error and historical negative controls)\n"
                     "  --render-distance-chunks=N (0 disables the extra far ring)\n"
                     "  --tls-probe=N (Linux worker TLS/stack measurement; N=0..12)\n"
+                    "  --tls-probe-touch=none|surface-world|floating-islands (first-use probe)\n"
                     "  --process-affinity=MASK --process-priority=Normal --frame-limit=FPS (viewer compatibility only)\n",
                     argv[0]);
                 return false;
@@ -93,6 +110,9 @@ namespace
             else if(arg=="--stream-hash")options.StreamHash=true;
             else if(arg=="--profile-column-overlap")options.ProfileColumnOverlap=true;
             else if(arg=="--force-generate")options.ForceGenerate=true;
+            else if(arg=="--mesh-coverage")options.MeshCoverage=true;
+            else if(arg=="--screen-space-gate")options.ScreenSpaceGate=true;
+            else if(arg=="--auto-surface-camera")options.AutoSurfaceCamera=true;
             else if(arg.starts_with("--recipe="))
             {
                 const std::string_view recipe=arg.substr(std::string_view("--recipe=").size());
@@ -115,12 +135,26 @@ namespace
                 {std::fprintf(stderr,"--tls-probe must be in 0..12\n");return false;}
                 options.TlsProbeRequested=true;
             }
+            else if(arg.starts_with("--tls-probe-touch="))
+            {
+                const std::string_view touch=arg.substr(std::string_view("--tls-probe-touch=").size());
+                if(touch!="none"&&touch!="surface-world"&&touch!="floating-islands")
+                {std::fprintf(stderr,"Invalid --tls-probe-touch value: %.*s\n",static_cast<int>(touch.size()),touch.data());return false;}
+                options.TlsProbeTouch=touch;
+            }
             else if(arg.starts_with("--camera="))
             {
-                if(!ParseCamera(arg.substr(9),options.CameraMeters))
+                if(!ParseCamera(arg.substr(9),options.CameraMeters,
+                    options.CameraYawDegrees,options.CameraPitchDegrees))
                 {std::fprintf(stderr,"Invalid --camera value: %.*s\n",static_cast<int>(arg.size()),arg.data());return false;}
                 options.HasCamera=true;
             }
+            else if(arg.starts_with("--mesh-export="))
+            {
+                options.MeshExportPath=std::filesystem::path(arg.substr(14));
+                if(options.MeshExportPath.empty())
+                {std::fprintf(stderr,"--mesh-export needs a file path\n");return false;}
+            }
             else if(arg.starts_with("--workers="))
             {if(!readInt("--workers=",options.WorkerCount))return false;}
             else if(arg.starts_with("--clip-radius="))
@@ -145,6 +179,8 @@ namespace
         options.ClipRadius=std::clamp(options.ClipRadius,1,64);
         options.MaxClipLevel=std::clamp(options.MaxClipLevel,0,8);
         options.FarHorizonLOD8InteriorStepVoxels=std::max(0,options.FarHorizonLOD8InteriorStepVoxels);
+        if(!options.TlsProbeRequested&&options.TlsProbeTouch!="none")
+        {std::fprintf(stderr,"--tls-probe-touch requires --tls-probe=N\n");return false;}
         if(options.TlsProbeRequested)return true;
         if(!options.WorldAssemblerPrototype||!options.StreamBenchmark||!options.StreamPipeline)
         {
@@ -161,7 +197,8 @@ int main(int argc,char** argv)
     const auto coldStart=Clock::now();
     FOptions options;
     if(!ParseOptions(argc,argv,options))return 2;
-    if(options.TlsProbeRequested)return StandaloneTlsProbe::Run(options.TlsProbeWorkers);
+    if(options.TlsProbeRequested)
+        return StandaloneTlsProbe::Run(options.TlsProbeWorkers,options.TlsProbeTouch);
     std::printf("[HeadlessConfig] data=%s workers=%d clip_radius=%d max_clip_level=%d max_level=%d hash=%s column_overlap=%s force_generate=%s recipe=%s seed_override=%s render_distance_override=%s\n",
         options.DataPath.string().c_str(),options.WorkerCount,options.ClipRadius,options.MaxClipLevel,
         options.MaxLevel,options.StreamHash?"on":"off",options.ProfileColumnOverlap?"on":"off",
@@ -221,6 +258,48 @@ int main(int argc,char** argv)
         &&!StandaloneWorldAssemblyPrototype::AttachFloatingIslandWorldAssembly(
             *ownerWorld,ownerJsonRoot,worldAssembly,error))
     {std::fprintf(stderr,"Floating-island assembly setup failed: %s\n",error.c_str());return 2;}
+    if(options.AutoSurfaceCamera)
+    {
+        constexpr std::int64_t UnitsPerVoxel=VoxelForgeCore::WorldAssemblySubvoxelsPerVoxel;
+        if(options.FloatingIslandsRecipe)
+        {
+            const VoxelForgeCore::FloatingIslandAnchorV1* chosen=nullptr;
+            for(const auto& islandSet:worldAssembly.floatingIslands)
+                for(const auto& island:islandSet.manifest.plan.islands)
+                    if(!chosen||island.radiusSubvoxels>chosen->radiusSubvoxels)chosen=&island;
+            if(!chosen)
+            {std::fprintf(stderr,"[SeedSurfacePlacement] FAIL: island plan has no anchors\n");return 2;}
+            cameraVoxels={
+                static_cast<float>(chosen->centerSubvoxels[0])/UnitsPerVoxel,
+                static_cast<float>(chosen->centerSubvoxels[1])/UnitsPerVoxel,
+                static_cast<float>(chosen->centerSubvoxels[2])/UnitsPerVoxel};
+            std::printf("[SeedSurfacePlacement] recipe=floating-islands seed=%d island_radius_vox=%.3f camera_voxel=(%.6f,%.6f,%.6f) status=PASS\n",
+                seed,static_cast<double>(chosen->radiusSubvoxels)/UnitsPerVoxel,
+                cameraVoxels.X,cameraVoxels.Y,cameraVoxels.Z);
+        }
+        else
+        {
+            const auto xSubvoxels=static_cast<std::int64_t>(std::llround(cameraVoxels.X*UnitsPerVoxel));
+            const auto ySubvoxels=static_cast<std::int64_t>(std::llround(cameraVoxels.Y*UnitsPerVoxel));
+            const auto currentZSubvoxels=static_cast<std::int64_t>(std::llround(cameraVoxels.Z*UnitsPerVoxel));
+            std::int64_t selectedGround=0,bestDistance=std::numeric_limits<std::int64_t>::max();
+            for(const auto& stratum:worldAssembly.plan.strates)
+            {
+                VoxelForgeCore::Heightfield2D field(worldAssembly.recipe,stratum);
+                if(!field.isValid())continue;
+                const auto column=field.point(xSubvoxels,ySubvoxels,0);
+                const std::int64_t distance=std::abs(column.groundHeightSubvoxels-currentZSubvoxels);
+                if(distance<bestDistance)
+                {bestDistance=distance;selectedGround=column.groundHeightSubvoxels;}
+            }
+            if(bestDistance==std::numeric_limits<std::int64_t>::max())
+            {std::fprintf(stderr,"[SeedSurfacePlacement] FAIL: no valid SurfaceWorld heightfield\n");return 2;}
+            cameraVoxels.Z=static_cast<float>(static_cast<double>(selectedGround)/UnitsPerVoxel);
+            std::printf("[SeedSurfacePlacement] recipe=surface-world seed=%d ground_voxel=%.6f camera_voxel=(%.6f,%.6f,%.6f) status=PASS\n",
+                seed,static_cast<double>(selectedGround)/UnitsPerVoxel,
+                cameraVoxels.X,cameraVoxels.Y,cameraVoxels.Z);
+        }
+    }
     std::printf("[WorldAssemblerPlanTiming] total_ms=%.3f status=PASS\n",
         std::chrono::duration<double,std::milli>(Clock::now()-planStart).count());
 
@@ -233,5 +312,7 @@ int main(int argc,char** argv)
     return StandaloneStreamBenchmark::RunPipelinedStreamingBenchmark(ownerWorld,snapshot,
         cameraVoxels,options.WorkerCount,options.MaxLevel,VoxelForgeCore::DetailVariant::coherent,
         scheduler,options.StreamHash,false,false,false,false,coldStart,
-        options.ProfileColumnOverlap,options.FarHorizonLOD8InteriorStepVoxels);
+        options.ProfileColumnOverlap,options.FarHorizonLOD8InteriorStepVoxels,
+        options.MeshCoverage,options.MeshExportPath,options.CameraYawDegrees,
+        options.CameraPitchDegrees,options.ScreenSpaceGate);
 }

Standalone/Source/StreamBenchmarkPipeline.h

@@ -2,6 +2,7 @@
 
 #include "OwnerWorldLoader.h"
 #include "StreamingWorld.h"
+#include "LinuxScreenSpaceGate.h"
 
 #include <algorithm>
 #include <array>
@@ -9,6 +10,8 @@
 #include <cmath>
 #include <cstdint>
 #include <cstdio>
+#include <filesystem>
+#include <fstream>
 #include <limits>
 #include <thread>
 #include <unordered_map>
@@ -17,6 +20,76 @@
 
 namespace StandaloneStreamBenchmark
 {
+    struct FSceneExportWriter
+    {
+        std::ofstream File;
+        bool bGood=true;
+        std::uint32_t TileCount=0;
+
+        template<typename T> void Write(const T& Value)
+        {
+            File.write(reinterpret_cast<const char*>(&Value),sizeof(Value));
+            bGood=bGood&&static_cast<bool>(File);
+        }
+
+        bool Open(const std::filesystem::path& Path,std::uint32_t VoxelSizeMicrons,
+                  const FVector& CameraVoxels,float YawDegrees,float PitchDegrees,
+                  std::uint32_t ExpectedTiles)
+        {
+            std::error_code Error;
+            if(!Path.parent_path().empty())
+                std::filesystem::create_directories(Path.parent_path(),Error);
+            if(Error)return false;
+            File.open(Path,std::ios::binary|std::ios::trunc);
+            if(!File)return false;
+            constexpr char Magic[8]={'V','F','M','S','H','0','0','1'};
+            File.write(Magic,sizeof(Magic));
+            const std::uint32_t Version=1;
+            Write(Version);Write(VoxelSizeMicrons);Write(ExpectedTiles);
+            const double MicronsToMeters=static_cast<double>(VoxelSizeMicrons)/1000000.0;
+            const double Camera[3]={CameraVoxels.X*MicronsToMeters,
+                CameraVoxels.Y*MicronsToMeters,CameraVoxels.Z*MicronsToMeters};
+            for(const double Value:Camera)Write(Value);
+            const double Yaw=YawDegrees,Pitch=PitchDegrees;
+            Write(Yaw);Write(Pitch);
+            return bGood;
+        }
+
+        void Add(const FStandaloneCpuTile& Tile)
+        {
+            const std::int32_t Key[4]={Tile.Key.Coord.X,Tile.Key.Coord.Y,
+                Tile.Key.Coord.Z,Tile.Key.Level};
+            for(const auto Value:Key)Write(Value);
+            const std::uint32_t SurfaceVertexCount=Tile.SurfaceVertexCount;
+            const std::uint32_t SkirtTriangleCount=Tile.SkirtTriangleCount;
+            const std::uint32_t VertexCount=static_cast<std::uint32_t>(Tile.Vertices.size());
+            const std::uint32_t IndexCount=static_cast<std::uint32_t>(Tile.Indices.size());
+            const std::uint32_t MaskCount=static_cast<std::uint32_t>(Tile.TriangleSkirtFaceMasks.size());
+            Write(SurfaceVertexCount);Write(SkirtTriangleCount);
+            Write(VertexCount);Write(IndexCount);Write(MaskCount);
+            for(const FStandaloneCpuVertex& Vertex:Tile.Vertices)
+                for(const float Value:Vertex.Position)Write(Value);
+            for(const FStandaloneCpuVertex& Vertex:Tile.Vertices)
+                for(const float Value:Vertex.Normal)Write(Value);
+            if(IndexCount)
+                File.write(reinterpret_cast<const char*>(Tile.Indices.data()),
+                    static_cast<std::streamsize>(sizeof(std::uint32_t)*Tile.Indices.size()));
+            if(MaskCount)
+                File.write(reinterpret_cast<const char*>(Tile.TriangleSkirtFaceMasks.data()),
+                    static_cast<std::streamsize>(Tile.TriangleSkirtFaceMasks.size()));
+            bGood=bGood&&static_cast<bool>(File);
+            ++TileCount;
+        }
+
+        bool Close(std::uint32_t ExpectedTiles)
+        {
+            File.flush();
+            const bool bComplete=bGood&&static_cast<bool>(File)&&TileCount==ExpectedTiles;
+            File.close();
+            return bComplete;
+        }
+    };
+
     inline void HashWord(uint64& Hash,uint64 Word,int32 Bytes=8)
     {
         for(int32 I=0;I<Bytes;++I)
@@ -62,10 +135,26 @@ namespace StandaloneStreamBenchmark
         VoxelForgeCore::DetailVariant DetailVariant,const VoxelForgeCore::JobScheduler& Scheduler,
         bool bHashDensity,bool bSkipUvAndColors,bool bSkipMaterialGroups,bool bSkipUV,bool bSkipColors,
         std::chrono::steady_clock::time_point ColdStart,bool bProfileColumnOverlap,
-        int32 FarHorizonLOD8InteriorStepVoxels)
+        int32 FarHorizonLOD8InteriorStepVoxels,bool bReportMeshCoverage=false,
+        const std::filesystem::path& MeshExportPath={},float CameraYawDegrees=0.0f,
+        float CameraPitchDegrees=0.0f,bool bScreenSpaceGate=false)
     {
         using Clock=std::chrono::steady_clock;
         FStandaloneOwnerWorld& World=*OwnerWorld;
+        const VoxelForgeCore::WorldAssemblyManifest* Assembly=CoreSnapshot.worldAssembly();
+        std::array<double,9> ClosestDisplayDistances{};
+        std::array<std::int64_t,9> PixelBudgetsSubvoxels{};
+        if(bScreenSpaceGate)
+        {
+            ClosestDisplayDistances=StandaloneScreenSpaceGate::ClosestDisplayedDistancesMeters(
+                World,CameraPositionVoxels,World.CoreVoxelSizeMicrons);
+            const double VoxelMeters=static_cast<double>(World.CoreVoxelSizeMicrons)/1000000.0;
+            for(int32 Lod=3;Lod<=World.MaxClipLevel&&Lod<9;++Lod)
+                PixelBudgetsSubvoxels[static_cast<std::size_t>(Lod)]=static_cast<std::int64_t>(std::floor(
+                    ClosestDisplayDistances[static_cast<std::size_t>(Lod)]
+                    *StandaloneScreenSpaceGate::OnePixelRadians/VoxelMeters
+                    *VoxelForgeCore::WorldAssemblySubvoxelsPerVoxel));
+        }
         const bool bRoundTunnels=World.Generator->bStandaloneResearchRoundTunnels;
         const bool bEnhancedTunnelWalls=World.Generator->bStandaloneResearchEnhancedWalls;
         VoxelForgeCore::World Shape(CoreSnapshot);
@@ -154,6 +243,7 @@ namespace StandaloneStreamBenchmark
         FStandaloneStreamingGenerator Streamer(World,WorkerCount,bHashDensity,nullptr,MaxLevel,
             bSkipUvAndColors,bSkipMaterialGroups,bSkipUV,bSkipColors,&Shape,bProfileColumnOverlap,
             FarHorizonLOD8InteriorStepVoxels);
+        if(bScreenSpaceGate)Streamer.SetMesherStageProfilingEnabled(true);
         const auto StreamStart=Clock::now();
         const FStandaloneStreamingUpdate Update=Streamer.StartWithDesired(Desired);
         if(Update.DesiredTiles!=static_cast<int32>(Desired.Tiles.size()))
@@ -162,10 +252,27 @@ namespace StandaloneStreamBenchmark
             std::fprintf(stderr,"[StreamPipeline] expected %zu tiles but queued %d.\n",
                 Desired.Tiles.size(),Update.DesiredTiles);return 7;
         }
+        FSceneExportWriter SceneExport;
+        const bool bExportRequested=!MeshExportPath.empty();
+        bool bSceneExportPassing=true;
+        if(bExportRequested)
+        {
+            bSceneExportPassing=SceneExport.Open(MeshExportPath,World.CoreVoxelSizeMicrons,
+                CameraPositionVoxels,CameraYawDegrees,CameraPitchDegrees,
+                static_cast<std::uint32_t>(Update.DesiredTiles));
+            if(!bSceneExportPassing)
+            {
+                Streamer.Stop();
+                std::fprintf(stderr,"[MeshSceneExport] FAIL: could not open %s\n",
+                    MeshExportPath.string().c_str());
+                return 8;
+            }
+        }
 
         std::vector<FHashedTile> DensityRows,MeshRows,PayloadRows,TopologyRows;
         int32 Finished=0,NeighborhoodFinished=0,FullDetailFinished=0;
         int32 FullDetailExpected=0;
+        uint64 WholeNonEmptyMeshTiles=0,WholeTriangleCount=0;
         struct FColumnXY
         {
             std::int64_t X=0,Y=0;
@@ -195,6 +302,8 @@ namespace StandaloneStreamBenchmark
         std::array<double,9> ColumnEvalMsByLOD{},MarchingExclusiveMsByLOD{};
         std::array<double,9> GroundRefineExclusiveMsByLOD{},CapRefineExclusiveMsByLOD{};
         std::array<double,9> MeshAssemblyMsByLOD{};
+        std::array<double,9> SkirtMsByLOD{};
+        std::array<std::uint64_t,9> SkirtTrianglesByLOD{};
         std::array<std::uint64_t,9> TileCountByLOD{};
         for(const FVoxelTileKey& Tile:Desired.Tiles)
             if(Tile.Level>=0&&Tile.Level<static_cast<int32>(ExpectedTilesByLOD.size()))
@@ -213,6 +322,9 @@ namespace StandaloneStreamBenchmark
         double NativeMeshingMilliseconds=0.0;
         for(const FVoxelTileKey& Tile:Desired.Tiles)
             if(Tile.Level<World.FullResClipLevels)++FullDetailExpected;
+        std::array<std::optional<FStandaloneCpuTile>,9> GateSampleTiles{};
+        std::array<double,9> GateSampleDistances{};
+        GateSampleDistances.fill(std::numeric_limits<double>::infinity());
         Clock::time_point NeighborhoodReady{},FullDetailReady{},WholeViewReady{};
         bool bNeighborhoodReported=false,bFullDetailReported=false;
         while(Finished<Update.DesiredTiles)
@@ -221,7 +333,14 @@ namespace StandaloneStreamBenchmark
             if(Ready.empty()){std::this_thread::sleep_for(std::chrono::milliseconds(1));continue;}
             for(const FStandaloneCpuTile& Tile:Ready)
             {
+                if(bExportRequested)SceneExport.Add(Tile);
                 ++Finished;
+                if(bReportMeshCoverage)
+                {
+                    const uint64 TileTriangleCount=static_cast<uint64>(Tile.Indices.size()/3);
+                    WholeTriangleCount+=TileTriangleCount;
+                    if(TileTriangleCount>0)++WholeNonEmptyMeshTiles;
+                }
                 if(Tile.Key.Level>=0&&Tile.Key.Level<static_cast<int32>(TileCountByLOD.size()))
                 {
                     const std::size_t LOD=static_cast<std::size_t>(Tile.Key.Level);
@@ -232,6 +351,23 @@ namespace StandaloneStreamBenchmark
                     GroundRefineExclusiveMsByLOD[LOD]+=Tile.CoreDiagnostics.groundRefinementExclusiveMilliseconds;
                     CapRefineExclusiveMsByLOD[LOD]+=Tile.CoreDiagnostics.capRefinementExclusiveMilliseconds;
                     MeshAssemblyMsByLOD[LOD]+=Tile.CoreDiagnostics.meshAssemblyMilliseconds;
+                    SkirtMsByLOD[LOD]+=Tile.CoreDiagnostics.marchingCubesSkirtMilliseconds;
+                    SkirtTrianglesByLOD[LOD]+=Tile.SkirtTriangleCount;
+                    if(bScreenSpaceGate&&Assembly&&Tile.Key.Level>=3&&Tile.Key.Level<9
+                        &&!Tile.Vertices.empty()
+                        &&StandaloneScreenSpaceGate::TileHasNativeSurface(Tile.Key,*Assembly,
+                            static_cast<double>(World.CoreVoxelSizeMicrons)/1000000.0))
+                    {
+                        const double Distance=StandaloneScreenSpaceGate::TileAabbDistanceMeters(
+                            Tile.Key,CameraPositionVoxels,
+                            static_cast<double>(World.CoreVoxelSizeMicrons)/1000000.0);
+                        const bool bCloser=Distance<GateSampleDistances[LOD]-1e-9;
+                        const bool bTied=std::abs(Distance-GateSampleDistances[LOD])<=1e-9;
+                        const bool bKeyLess=!GateSampleTiles[LOD]
+                            ||TileKeyLessForHash(Tile.Key,GateSampleTiles[LOD]->Key);
+                        if(bCloser||(bTied&&bKeyLess))
+                        {GateSampleDistances[LOD]=Distance;GateSampleTiles[LOD]=Tile;}
+                    }
                 }
                 if(bProfileColumnOverlap&&Tile.Key.Level>=0
                     &&Tile.Key.Level<static_cast<int32>(ColumnCaptureTilesByLOD.size()))
@@ -314,6 +450,28 @@ namespace StandaloneStreamBenchmark
             }
         }
         Streamer.Stop();
+        bool bScreenSpaceGatePassing=true;
+        if(bScreenSpaceGate)
+        {
+            if(Assembly)
+                bScreenSpaceGatePassing=StandaloneScreenSpaceGate::Run(GateSampleTiles,
+                    Streamer,*Assembly,ClosestDisplayDistances,World.CoreVoxelSizeMicrons,
+                    World.MaxClipLevel,PixelBudgetsSubvoxels,CameraYawDegrees,
+                    CameraPitchDegrees);
+            else
+            {std::fprintf(stderr,"[ScreenSpaceGateResult] no-world-assembly status=REJECT\n");bScreenSpaceGatePassing=false;}
+        }
+        if(bExportRequested)
+        {
+            bSceneExportPassing=SceneExport.Close(static_cast<std::uint32_t>(Update.DesiredTiles));
+            std::error_code FileSizeError;
+            const std::uintmax_t ExportBytes=std::filesystem::file_size(MeshExportPath,FileSizeError);
+            std::printf("[MeshSceneExport] tiles=%u expected=%d bytes=%llu status=%s path=%s\n",
+                SceneExport.TileCount,Update.DesiredTiles,
+                static_cast<unsigned long long>(FileSizeError?0:ExportBytes),
+                bSceneExportPassing?"PASS":"FAIL",MeshExportPath.string().c_str());
+            bSceneExportPassing=bSceneExportPassing&&!FileSizeError;
+        }
         bool bColumnOverlapCapturePassing=true;
         if(bProfileColumnOverlap)
         {
@@ -334,10 +492,12 @@ namespace StandaloneStreamBenchmark
         }
         for(std::size_t LOD=0;LOD<TileCountByLOD.size();++LOD)
         {
-            std::printf("[WorldAssemblerLODWorker] lod=%zu tiles=%llu worker_sum_s=%.6f column_eval_exclusive_ms=%.3f mc_exclusive_ms=%.3f ground_refine_exclusive_ms=%.3f cap_refine_exclusive_ms=%.3f mesh_assembly_ms=%.3f\n",
+            std::printf("[WorldAssemblerLODWorker] lod=%zu tiles=%llu worker_sum_s=%.6f column_eval_exclusive_ms=%.3f mc_exclusive_ms=%.3f ground_refine_exclusive_ms=%.3f cap_refine_exclusive_ms=%.3f skirt_ms=%.3f skirt_triangles=%llu mesh_assembly_ms=%.3f\n",
                 LOD,static_cast<unsigned long long>(TileCountByLOD[LOD]),WorkerSecondsByLOD[LOD],
                 ColumnEvalMsByLOD[LOD],MarchingExclusiveMsByLOD[LOD],
-                GroundRefineExclusiveMsByLOD[LOD],CapRefineExclusiveMsByLOD[LOD],MeshAssemblyMsByLOD[LOD]);
+                GroundRefineExclusiveMsByLOD[LOD],CapRefineExclusiveMsByLOD[LOD],
+                SkirtMsByLOD[LOD],static_cast<unsigned long long>(SkirtTrianglesByLOD[LOD]),
+                MeshAssemblyMsByLOD[LOD]);
         }
         const double NeighborhoodSeconds=std::chrono::duration<double>(NeighborhoodReady-ColdStart).count();
         const double NeighborhoodMeshSeconds=std::chrono::duration<double>(NeighborhoodReady-ShapeReady).count();
@@ -348,6 +508,10 @@ namespace StandaloneStreamBenchmark
             WorkerCount,ShapeSeconds,NeighborhoodMeshSeconds,NeighborhoodSeconds,
             FullDetailSeconds,WholeViewSeconds,NeighborhoodFinished,
             FullDetailFinished,FullDetailExpected,Finished,Desired.Tiles.size(),StreamSeconds);
+        if(bReportMeshCoverage)
+            std::printf("[PipelineMeshCoverage] tiles=%d nonempty_mesh_tiles=%llu indexed_triangles=%llu\n",
+                Finished,static_cast<unsigned long long>(WholeNonEmptyMeshTiles),
+                static_cast<unsigned long long>(WholeTriangleCount));
         std::printf("[WorldAssemblerTilePipeline] full_detail_tiles=%d solid_boxes=%llu air_boxes=%llu mixed_boxes=%llu unknown_boxes=%llu whole_tile_skips=%llu field_calls=%llu column_cache_hits=%llu column_cache_misses=%llu column_compute_worker_ms=%.3f classification_worker_ms=%.3f meshing_worker_ms=%.3f\n",
             FullDetailExpected,static_cast<unsigned long long>(NativeSolidBoxes),
             static_cast<unsigned long long>(NativeAirBoxes),
@@ -382,9 +546,59 @@ namespace StandaloneStreamBenchmark
                 static_cast<unsigned long long>(HashTileRows(MeshRows)),
                 static_cast<unsigned long long>(HashTileRows(PayloadRows)),
                 static_cast<unsigned long long>(HashTileRows(TopologyRows)));
+            for(std::size_t LOD=0;LOD<TileCountByLOD.size();++LOD)
+            {
+                const auto FilterLOD=[LOD](const std::vector<FHashedTile>& Rows)
+                {
+                    std::vector<FHashedTile> Selected;
+                    for(const FHashedTile& Row:Rows)
+                        if(Row.Key.Level==static_cast<int32>(LOD))Selected.push_back(Row);
+                    return Selected;
+                };
+                auto LodDensity=FilterLOD(DensityRows),LodMesh=FilterLOD(MeshRows);
+                auto LodPayload=FilterLOD(PayloadRows),LodTopology=FilterLOD(TopologyRows);
+                std::printf("[PipelineLODHash] lod=%zu tiles=%llu density=0x%016llx mesh=0x%016llx payload=0x%016llx topology=0x%016llx\n",
+                    LOD,static_cast<unsigned long long>(TileCountByLOD[LOD]),
+                    static_cast<unsigned long long>(HashTileRows(LodDensity)),
+                    static_cast<unsigned long long>(HashTileRows(LodMesh)),
+                    static_cast<unsigned long long>(HashTileRows(LodPayload)),
+                    static_cast<unsigned long long>(HashTileRows(LodTopology)));
+            }
+            const std::array<VoxelForgeCore::Vec3d,9> QueryPoints={{
+                {CameraPositionVoxels.X,CameraPositionVoxels.Y,CameraPositionVoxels.Z},
+                {CameraPositionVoxels.X+8.0,CameraPositionVoxels.Y,CameraPositionVoxels.Z},
+                {CameraPositionVoxels.X-8.0,CameraPositionVoxels.Y,CameraPositionVoxels.Z},
+                {CameraPositionVoxels.X,CameraPositionVoxels.Y+8.0,CameraPositionVoxels.Z},
+                {CameraPositionVoxels.X,CameraPositionVoxels.Y-8.0,CameraPositionVoxels.Z},
+                {CameraPositionVoxels.X,CameraPositionVoxels.Y,CameraPositionVoxels.Z+8.0},
+                {CameraPositionVoxels.X,CameraPositionVoxels.Y,CameraPositionVoxels.Z-8.0},
+                {CameraPositionVoxels.X+64.0,CameraPositionVoxels.Y-32.0,CameraPositionVoxels.Z+16.0},
+                {CameraPositionVoxels.X-128.0,CameraPositionVoxels.Y+96.0,CameraPositionVoxels.Z-64.0}}};
+            uint64 ExactDensityHash=14695981039346656037ull;
+            uint64 ExactUnclampedHash=14695981039346656037ull;
+            uint64 ExactDetailHash=14695981039346656037ull;
+            uint64 ExactCollisionHash=14695981039346656037ull;
+            for(const auto& Point:QueryPoints)
+            {
+                const float Density=Shape.densityAt(Point);
+                const float Unclamped=Shape.unclampedDensityAt(Point);
+                const auto Detail=Shape.detailSampleAt(Point);
+                HashWord(ExactDensityHash,std::bit_cast<uint32>(Density),4);
+                HashWord(ExactUnclampedHash,std::bit_cast<uint32>(Unclamped),4);
+                HashWord(ExactDetailHash,std::bit_cast<uint32>(Detail.displacement),4);
+                HashWord(ExactDetailHash,std::bit_cast<uint32>(Detail.caveInfluence),4);
+                HashWord(ExactDetailHash,std::bit_cast<uint32>(Detail.floorInfluence),4);
+                HashWord(ExactCollisionHash,Shape.isSolidAt(Point)?1u:0u,1);
+            }
+            std::printf("[PipelineExactQueryHash] probes=%zu density=0x%016llx unclamped=0x%016llx detail=0x%016llx collision=0x%016llx path=direct-Core-queries\n",
+                QueryPoints.size(),static_cast<unsigned long long>(ExactDensityHash),
+                static_cast<unsigned long long>(ExactUnclampedHash),
+                static_cast<unsigned long long>(ExactDetailHash),
+                static_cast<unsigned long long>(ExactCollisionHash));
         }
         return NeighborhoodFinished==static_cast<int32>(Neighborhood.size())
             &&FullDetailFinished==FullDetailExpected&&Finished==Update.DesiredTiles&&bHashesPassing
-            &&(!bProfileColumnOverlap||bColumnOverlapCapturePassing)?0:6;
+            &&(!bProfileColumnOverlap||bColumnOverlapCapturePassing)
+            &&(!bExportRequested||bSceneExportPassing)&&bScreenSpaceGatePassing?0:6;
     }
 } // namespace StandaloneStreamBenchmark

Standalone/Source/StreamingWorld.h

@@ -646,6 +646,16 @@ public:
     int32 GetWorkerCount()const{return WorkerCount;}
     uint64 GetCacheHits()const{return CacheHitCount.load(std::memory_order_relaxed);}
 
+    void SetMesherStageProfilingEnabled(bool Enabled)
+    {bProfileMesherStages=Enabled;}
+    FStandaloneCpuTile GenerateDiagnostic(const FVoxelTileKey& Key,
+        std::uint32_t GlobalOctaveDrop=0,std::uint32_t CellStride=1,
+        bool ForceGenerate=false)
+    {
+        FStandaloneTileJob Job;Job.Key=Key;Job.StartedAt=FClock::now();Job.QueuedAt=Job.StartedAt;
+        return Generate(Job,GlobalOctaveDrop,CellStride,ForceGenerate);
+    }
+
 private:
     FStandaloneStreamingUpdate UpdateDesiredSet(FStandaloneDesiredTileSet NewDesired,
         const std::vector<FVoxelTileKey>& ResidentKeys,uint64 CrossingIndex)
@@ -761,12 +771,14 @@ private:
         Wake.notify_all();
         return Stats;
     }
-    FStandaloneCpuTile Generate(const FStandaloneTileJob& Job)
+    FStandaloneCpuTile Generate(const FStandaloneTileJob& Job,
+        std::uint32_t DiagnosticGlobalOctaveDrop=0,std::uint32_t DiagnosticCellStride=1,
+        bool ForceGenerate=false)
     {
         const auto StartTime=Job.StartedAt;
         FStandaloneCpuTile Out;Out.Key=Job.Key;Out.RequestedCrossing=Job.RequestedCrossing;
         Out.QueuedAt=Job.QueuedAt;Out.StartedAt=Job.StartedAt;
-        if(MeshCache)
+        if(MeshCache&&!ForceGenerate)
         {
             if(const FStandaloneCpuTile* Cached=MeshCache->Find(Job.Key))
             {
@@ -805,6 +817,11 @@ private:
             Options.skipMaterialGroups=bSkipMaterialGroups;Options.skipUv=bSkipUV;Options.skipColors=bSkipColors;
             Options.captureColumnCoordinates=bCaptureColumnCoordinates;
             Options.lod8HorizonInteriorStepVoxels=Lod8HorizonInteriorStepVoxels;
+            Options.profileMesherStages=bProfileMesherStages&&!ForceGenerate;
+            Options.diagnosticGlobalOctaveDrop=DiagnosticGlobalOctaveDrop;
+            Options.diagnosticCellStride=std::max<std::uint32_t>(1,DiagnosticCellStride);
+            Options.diagnosticColumnInterpolationStride=
+                std::max<std::uint32_t>(1,DiagnosticCellStride);
             std::string Error;
             auto Result=CoreWorld->generateTile(
                 {{Job.Key.Coord.X,Job.Key.Coord.Y,Job.Key.Coord.Z},Job.Key.Level},Options,Error);
@@ -977,6 +994,7 @@ private:
     bool bSkipColors=false;
     bool bCaptureColumnCoordinates=false;
     int32 Lod8HorizonInteriorStepVoxels=0;
+    bool bProfileMesherStages=false;
     std::atomic<uint64> CacheHitCount{0};
     mutable std::mutex Mutex;
     std::condition_variable Wake;

Standalone/Source/VoxelForge/Private/VoxelCaveMorphology.cpp

@@ -27,6 +27,7 @@
 //   - STORE region (tight): only rooms/tunnels that can actually reach a voxel in
 //     this chunk are kept for the per-voxel loop, so hot-path cost stays low.
 
+#include "VoxelForgeCore/ThreadLocalStorage.h"
 #include "VoxelCaveMorphology.h"
 #include "VoxelDensityProfile.h"
 #include "VoxelDensityPrimitives.h"
@@ -265,7 +266,8 @@ namespace
         }
     };
 
-    static thread_local FVFFloorReliefCache GFloorReliefCache;
+    static thread_local VoxelForgeCoreThreadLocal::FLazy<FVFFloorReliefCache>
+        GFloorReliefCache;
 
     FORCEINLINE float VF_ComputeFloorReliefNoiseDouble(
         double X, double Y, uint32 FloorSeed, float Frequency)
@@ -300,7 +302,7 @@ namespace
         int32 FeatureIndex,
         const FVFFloorReliefColumnKey& Column)
     {
-        return GFloorReliefCache.GetOrCompute(
+        return GFloorReliefCache.Get().GetOrCompute(
             X, Y, FloorSeed, Frequency, CacheIdentity, Feature, FeatureIndex,
             Column,
             &VF_ComputeFloorReliefNoiseDouble);
@@ -313,7 +315,7 @@ namespace
         int32 FeatureIndex,
         const FVFFloorReliefColumnKey& Column)
     {
-        return GFloorReliefCache.GetOrCompute(
+        return GFloorReliefCache.Get().GetOrCompute(
             static_cast<double>(X), static_cast<double>(Y),
             FloorSeed, Frequency, CacheIdentity, Feature, FeatureIndex,
             Column,

Standalone/Source/VoxelForge/Private/VoxelDensityOpStack.cpp

@@ -8,6 +8,7 @@
 // Convention de signe INTERNE : positif = solide ; la pile négative une fois pour le MC.
 // Internal sign convention: positive = solid; the stack negates once for MC.
 
+#include "VoxelForgeCore/ThreadLocalStorage.h"
 #include "VoxelDensityOpStack.h"
 #include "VoxelStrateComposer.h"
 
@@ -1148,7 +1149,8 @@ namespace
                 }
             };
 
-            thread_local FColumnCache Cache = {};
+            thread_local VoxelForgeCoreThreadLocal::FLazy<FColumnCache> Cache;
+            FColumnCache& columnCache = Cache.Get();
             thread_local FColumn DirectColumn = {};
 
             // The production mesher and the exact-lattice classifier use integer XY. Fractional
@@ -1172,7 +1174,7 @@ namespace
 
                 // Acquire vérifie la clé uint64 complète et les bornes exactes avant de dériver CI.
                 // Acquire checks the exact uint64 key and exact bounds before deriving CI.
-                FColumnBox& Box = Cache.Acquire(IX, IY, ColumnKey);
+                FColumnBox& Box = columnCache.Acquire(IX, IY, ColumnKey);
                 AcquiredBox = &Box;
 
                 CI = (IY - Box.BaseY) * FColumnBox::Dim + (IX - Box.BaseX);
@@ -3158,8 +3160,10 @@ namespace
         FChunkSDFCache Cache;
     };
 
-    static thread_local FRoomGraphCacheEntry GRoomGraphCache[
+    using FRoomGraphCacheStorage = std::array<
-        RoomGraphCacheBankCount][RoomGraphCacheSlotCount];
+        std::array<FRoomGraphCacheEntry, RoomGraphCacheSlotCount>, RoomGraphCacheBankCount>;
+    static thread_local VoxelForgeCoreThreadLocal::FLazy<FRoomGraphCacheStorage>
+        GRoomGraphCache;
     static thread_local uint32 GRoomGraphCacheClock = 0;
 
     FORCEINLINE int32 RoomGraphCacheBank(int32 RegionSize)
@@ -3190,6 +3194,7 @@ namespace
         uint64 ManagerLifetimeId, const TArray<FStrateTerrainOpEntry>* TerrainOps,
         int32 RegionMinX, int32 RegionMinY, int32 RegionSize)
     {
+        auto& RoomGraphCache = GRoomGraphCache.Get();
         auto SelectForReuse = [](FRoomGraphCacheEntry* Selected, uint32 Use)
             -> FRoomGraphCacheEntry*
         {
@@ -3219,7 +3224,7 @@ namespace
         FRoomGraphCacheEntry* LeastRecentlyUsed = nullptr;
         for (int32 Probe = 0; Probe < RoomGraphCacheSlotCount; ++Probe)
         {
-            FRoomGraphCacheEntry& Candidate = GRoomGraphCache[Bank][
+            FRoomGraphCacheEntry& Candidate = RoomGraphCache[Bank][
                 (StartSlot + Probe) & (RoomGraphCacheSlotCount - 1)];
             if (!Candidate.bValid)
             {
@@ -3251,7 +3256,7 @@ namespace
         FRoomGraphCacheEntry* Selected = ReuseEntry != nullptr
             ? ReuseEntry : LeastRecentlyUsed;
         return SelectForReuse(
-            Selected != nullptr ? Selected : &GRoomGraphCache[Bank][StartSlot], Use);
+            Selected != nullptr ? Selected : &RoomGraphCache[Bank][StartSlot], Use);
     }
 
     // Classification is dispatched across many workers before most of those workers have
@@ -8740,11 +8745,12 @@ void VoxelDensityOps::ReportWorkerRoomGraphCacheFootprint()
     uint64 LargestEntryBytes = 0;
     uint64 ValidEntries = 0;
     VoxelDensityProfile::FCacheMemoryBreakdown Breakdown;
+    auto& RoomGraphCache = GRoomGraphCache.Get();
     for (int32 Bank = 0; Bank < RoomGraphCacheBankCount; ++Bank)
     {
         for (int32 Index = 0; Index < RoomGraphCacheSlotCount; ++Index)
         {
-            const FRoomGraphCacheEntry& Entry = GRoomGraphCache[Bank][Index];
+            const FRoomGraphCacheEntry& Entry = RoomGraphCache[Bank][Index];
             if (!Entry.bValid)
             {
                 continue;
@@ -8760,12 +8766,12 @@ void VoxelDensityOps::ReportWorkerRoomGraphCacheFootprint()
             LargestEntryBytes = FMath::Max(LargestEntryBytes, FullEntryBytes);
         }
     }
-    Breakdown.SlotStorageBytes = static_cast<uint64>(sizeof(GRoomGraphCache));
+    Breakdown.SlotStorageBytes = static_cast<uint64>(sizeof(RoomGraphCache));
 
     VoxelDensityProfile::SetWorkerRoomGraphCacheFootprint(
         RoomGraphCacheBankCount * RoomGraphCacheSlotCount,
         ValidEntries,
-        static_cast<uint64>(sizeof(GRoomGraphCache)),
+        static_cast<uint64>(sizeof(RoomGraphCache)),
         DynamicBytes,
         EntryBytes,
         LargestEntryBytes,

Standalone/Source/VoxelForge/Private/VoxelGenerator.cpp

@@ -4,6 +4,7 @@
 // Convention INTERNE: positif = solide, négatif = air (plus lisible).
 // Convention de SORTIE (marching cubes): on négate → négatif = solide.
 
+#include "VoxelForgeCore/ThreadLocalStorage.h"
 #include "VoxelGenerator.h"
 #include "StandaloneResearchTunnels.h"
 #include "VoxelSettings.h"
@@ -388,7 +389,7 @@ struct FSurfaceColumnCache
 // Cache de colonnes par thread de ClassifyTile (T1.d) : les pré-passes et passes complètes
 // successives d'une même tuile, et les tuiles voisines, réutilisent leurs colonnes.
 // Per-thread column cache for ClassifyTile: successive passes and neighbouring tiles reuse columns.
-static thread_local FSurfaceColumnCache GSurfColCache;
+static thread_local VoxelForgeCoreThreadLocal::FLazy<FSurfaceColumnCache> GSurfColCache;
 
 //=============================================================================
 // WORM N1 BLOCK PROOF (worker-local, scalar GetDensityAt hand-off)
@@ -3023,7 +3024,9 @@ float UVoxelGenerator::GetDensityAt(float WorldX, float WorldY, float WorldZ,
         thread_local FVoxelOpStack            CP_OpStack;
         thread_local bool                     CP_UseOpStack = false;
         thread_local uint64                    CP_ManagerLifetimeId = 0;
-        thread_local FTunnelNetworkDensityCacheEntry CP_TunnelDensityCache[TunnelDensityCacheSlotCount];
+        thread_local VoxelForgeCoreThreadLocal::FLazy<
+            std::array<FTunnelNetworkDensityCacheEntry, TunnelDensityCacheSlotCount>>
+                CP_TunnelDensityCache;
         thread_local FTunnelNetworkDensityCacheEntry* CP_ActiveTunnelDensityCache = nullptr;
         // Cooked-season recipes and editor candidate recipes share this immutable worker-local
         // hand-off. Recipe materialisation is runtime; rolling/selection remains editor-only.
@@ -3080,12 +3083,13 @@ float UVoxelGenerator::GetDensityAt(float WorldX, float WorldY, float WorldZ,
         auto FindTunnelDensityCacheEntry = [&](const FIntVector& QueryChunk,
                                                 FTunnelNetworkDensityCacheEntry*& OutEntry) -> bool
         {
+            auto& TunnelDensityCache = CP_TunnelDensityCache.Get();
             const int32 StartSlot = TunnelDensityCacheSlot(TunnelCacheKey);
             FTunnelNetworkDensityCacheEntry* ReuseEntry = nullptr;
             for (int32 Probe = 0; Probe < TunnelDensityCacheSlotCount; ++Probe)
             {
                 const int32 Slot = (StartSlot + Probe) & (TunnelDensityCacheSlotCount - 1);
-                FTunnelNetworkDensityCacheEntry& Candidate = CP_TunnelDensityCache[Slot];
+                FTunnelNetworkDensityCacheEntry& Candidate = TunnelDensityCache[Slot];
                 if (!Candidate.bValid || Candidate.OwnerId != DensityCacheOwnerId)
                 {
                     if (ReuseEntry == nullptr) { ReuseEntry = &Candidate; }
@@ -3107,11 +3111,14 @@ float UVoxelGenerator::GetDensityAt(float WorldX, float WorldY, float WorldZ,
             }
             OutEntry = ReuseEntry != nullptr
                 ? ReuseEntry
-                : &CP_TunnelDensityCache[StartSlot];
+                : &TunnelDensityCache[StartSlot];
             return false;
         };
 
-        if (!bIsGapChunk)
+        const bool bTunnelDensityCacheRoute =
+            QueryGeneratorType == ECaveGeneratorType::TunnelNetwork
+            || QueryGeneratorType == ECaveGeneratorType::Underwater;
+        if (!bIsGapChunk && bTunnelDensityCacheRoute)
         {
             if (VoxelDensityProfile::AreCountersEnabled())
             {
@@ -3387,7 +3394,7 @@ float UVoxelGenerator::GetDensityAt(float WorldX, float WorldY, float WorldZ,
             {
                 FTunnelNetworkDensityCacheEntry& CachedEntry = TunnelDensityCacheEntryForWrite
                     ? *TunnelDensityCacheEntryForWrite
-                    : CP_TunnelDensityCache[TunnelDensityCacheSlot(ChunkCoord)];
+                    : CP_TunnelDensityCache.Get()[TunnelDensityCacheSlot(ChunkCoord)];
                 CachedEntry.bValid = false;
                 CachedEntry.OwnerId = DensityCacheOwnerId;
                 CachedEntry.ManagerLifetimeId = ManagerLifetimeId;
@@ -3406,7 +3413,7 @@ float UVoxelGenerator::GetDensityAt(float WorldX, float WorldY, float WorldZ,
                 CP_ActiveTunnelDensityCache = &CachedEntry;
                 ActiveOpStack = &CachedEntry.OpStack;
                 ActiveTunnelCoreCache = &CachedEntry.TunnelCore;
-                ReportTunnelDensityCacheFootprint(CP_TunnelDensityCache);
+                ReportTunnelDensityCacheFootprint(CP_TunnelDensityCache.Get().data());
             }
             else if (!bLoadedTunnelDensityCache)
             {
@@ -4023,11 +4030,13 @@ float UVoxelGenerator::GetDensityAt(float WorldX, float WorldY, float WorldZ,
             uint32     Version = 0;
             TArray<FVoxelModification> Mods;
         };
-        static thread_local FDiffSlot DiffSlots[64];
+        static thread_local VoxelForgeCoreThreadLocal::FLazy<std::array<FDiffSlot, 64>>
+            DiffSlots;
+        auto& diffSlots = DiffSlots.Get();
 
         const uint64 DiffLayerOwnerId = DiffLayer->GetCacheLifetimeId();
         const uint32 V = DiffLayer->GetModsVersion();
-        FDiffSlot& Slot = DiffSlots[(ChunkCoord.X & 3) | ((ChunkCoord.Y & 3) << 2) | ((ChunkCoord.Z & 3) << 4)];
+        FDiffSlot& Slot = diffSlots[(ChunkCoord.X & 3) | ((ChunkCoord.Y & 3) << 2) | ((ChunkCoord.Z & 3) << 4)];
         if (Slot.OwnerId != DiffLayerOwnerId || Slot.Chunk != ChunkCoord || Slot.Version != V)
         {
             Slot.OwnerId = DiffLayerOwnerId;
@@ -4233,7 +4242,8 @@ float UVoxelGenerator::GetDensityWithParams(float WorldX, float WorldY, float Wo
         uint64 LastUse = 0;
         bool bValid = false;
     };
-    static thread_local std::array<FRoomGraphCacheSlot, 4> RoomGraphCacheSlots{};
+    static thread_local VoxelForgeCoreThreadLocal::FLazy<
+        std::array<FRoomGraphCacheSlot, 4>> RoomGraphCacheStorage;
     static thread_local uint64 RoomGraphCacheUseSerial = 0;
     VF_ParseRoomGraphCacheSlots();
     // The envelope proof is constant for a cache-policy key.  Do not run the complete room/edge
@@ -4417,6 +4427,7 @@ float UVoxelGenerator::GetDensityWithParams(float WorldX, float WorldY, float Wo
         const int32 ActiveCacheSlots = FMath::Max(
             FMath::Clamp(GVoxelForgeRoomGraphCacheSlots, 1, 4),
             bNeedsTwoStrataWindows ? 2 : 1);
+        auto& RoomGraphCacheSlots = RoomGraphCacheStorage.Get();
         FRoomGraphCacheSlot* CacheSlot = nullptr;
         FRoomGraphCacheSlot* EvictionSlot = &RoomGraphCacheSlots[0];
         for (int32 SlotIndex = 0; SlotIndex < ActiveCacheSlots; ++SlotIndex)
@@ -7349,7 +7360,7 @@ EVoxelTileClass UVoxelGenerator::ClassifyTileUncached(
         {
             FSurfSlot& S = Slots[s];
             if (S.InteriorZ.Num() == 0) continue;
-            FSurfaceColumnBox& Box = GSurfColCache.Acquire(
+            FSurfaceColumnBox& Box = GSurfColCache.Get().Acquire(
                 Xi, Yi, S.StrateKey, Seed, TC_LayoutVersion,
                 TC_OwnerId, TC_ManagerLifetimeId);
             const int32 CI = (Yi - Box.BaseY) * FSurfaceColumnBox::Dim + (Xi - Box.BaseX);

Standalone/Source/VoxelForge/Private/VoxelMarchingCubesMesher.cpp

@@ -1768,6 +1768,7 @@ FVoxelMeshData UVoxelMarchingCubesMesher::GenerateMesh(FIntVector OriginVoxels,
     const int32 GroundSurfaceTriangleCount=GroundTris.Num()/3;
     const int32 CapSurfaceTriangleCount=CapTris.Num()/3;
     TArray<uint8> GroundSkirtFaceMasks,CapSkirtFaceMasks;
+    const uint64 SkirtStageStartCycles=OutStageTimings?FPlatformTime::Cycles64():0;
     if (bGenerateSkirts && (GroundTris.Num() + CapTris.Num()) > 0)
     {
         const float ExtentCm = (float)(CellsPerAxis * Step) * GeometryVoxelSize;
@@ -2007,6 +2008,10 @@ FVoxelMeshData UVoxelMarchingCubesMesher::GenerateMesh(FIntVector OriginVoxels,
             EmitSkirts(GroundTris,GroundSkirtFaceMasks);
             EmitSkirts(CapTris,CapSkirtFaceMasks);
         }
+    if(OutStageTimings)
+        OutStageTimings->SkirtMilliseconds=static_cast<double>(
+            FPlatformTime::Cycles64()-SkirtStageStartCycles)
+                *FPlatformTime::GetSecondsPerCycle64()*1000.0;
 
     // F17 — concatène sol PUIS sky-cap : un run d'indices contigu par polygroup (voir
     // FVoxelMeshData::NumCeilingTriangles). Mêmes triangles qu'avant, seul l'ordre change.
@@ -2059,6 +2064,8 @@ FVoxelMeshData UVoxelMarchingCubesMesher::GenerateMesh(FIntVector OriginVoxels,
             AuditInterpolationCycles,AuditInterpolationSamples,SurfaceCellCalls);
         OutStageTimings->VertexDedupStreamMilliseconds=ScaleSampledCycles(
             AuditDedupStreamCycles,AuditDedupStreamSamples,SurfaceCellCalls);
+        OutStageTimings->SkirtMilliseconds=std::max(0.0,
+            OutStageTimings->SkirtMilliseconds);
         const double TotalMilliseconds=static_cast<double>(
             FPlatformTime::Cycles64()-StageMesherStartCycles)*CycleToMs;
         OutStageTimings->OtherMilliseconds=FMath::Max(0.0,TotalMilliseconds
@@ -2066,7 +2073,8 @@ FVoxelMeshData UVoxelMarchingCubesMesher::GenerateMesh(FIntVector OriginVoxels,
             -OutStageTimings->CellClassificationMilliseconds
             -OutStageTimings->GradientNormalsMilliseconds
             -OutStageTimings->EdgeInterpolationMilliseconds
-            -OutStageTimings->VertexDedupStreamMilliseconds);
+            -OutStageTimings->VertexDedupStreamMilliseconds
+            -OutStageTimings->SkirtMilliseconds);
     }
 
     return MeshData;

Standalone/Source/VoxelForge/Private/VoxelStrateManager.cpp

@@ -1,6 +1,7 @@
 // VoxelStrateManager.cpp
 // Runtime strate layout generation and queries.
 
+#include "VoxelForgeCore/ThreadLocalStorage.h"
 #include "VoxelStrateManager.h"
 #include "VoxelSettings.h"
 #include "VoxelSeasonAsset.h"
@@ -435,8 +436,8 @@ namespace
 
     FVoxelPassageReliefCache& VF_GetPassageReliefCache()
     {
-        thread_local FVoxelPassageReliefCache Cache;
+        thread_local VoxelForgeCoreThreadLocal::FLazy<FVoxelPassageReliefCache> Cache;
-        return Cache;
+        return Cache.Get();
     }
 
     FORCEINLINE float VF_ComputePassageReliefNoise(

Standalone/Source/VoxelForge/Public/VoxelMarchingCubesMesher.h

@@ -50,6 +50,7 @@ struct FVoxelMarchingCubesStageTimings
     double GradientNormalsMilliseconds = 0.0;
     double EdgeInterpolationMilliseconds = 0.0;
     double VertexDedupStreamMilliseconds = 0.0;
+    double SkirtMilliseconds = 0.0;
     double OtherMilliseconds = 0.0;
     uint64 GradientFallbackDensityCalls = 0;
     uint64 EdgeMidpointDensityCalls = 0;