Enjin Engine

graph TB
    subgraph ApplicationLayer["Application Layer"]
        Editor["Editor App
(EditorLayer, ImGui)"]
        Player["Player App
(Standalone Runtime)"]
        Hub["Hub App
(Project Launcher)"]
    end

    subgraph EditorSystems["Editor Systems"]
        PlayMode["PlayMode
(Play/Pause/Stop)"]
        PlayModeDiff["PlayModeDiff
(Cherry-pick Changes)"]
        ScenePicker["ScenePicker
(Ray Cast Selection)"]
        Gizmos["ImGuizmo
(Transform Gizmos)"]
        TemplateSystem["Template System
(44 Templates + Creator
+ Marketplace)"]
        InspectorUndo["Inspector Undo/Redo
(PropertyEditCommand)"]
        Panels["32 Editor Panels
(Hierarchy, Inspector,
Console, Asset Browser...)"]
        Notifications["Toast Notifications
(4 Types, Slide-in)"]
        CommandPalette["Command Palette
(Ctrl+P, Fuzzy Search)"]
    end

    subgraph RendererLayer["Renderer"]
        VulkanContext["VulkanContext
(Instance, Device, Queues)"]
        VulkanRenderer["VulkanRenderer
(Swapchain, Frame Sync)"]
        VulkanPipeline["VulkanPipeline
(Graphics Pipeline,
Descriptor Sets)"]
        VulkanBuffer["VulkanBuffer
(Vertex, Index, Uniform,
Storage Buffers)"]
        RenderSystem["RenderSystem
(Entity Rendering,
Material Sort, Caching)"]
        PostProcessing["PostProcessing
(Bloom, Vignette, FXAA,
DoF, Tilt-Shift, Film Grain,
Color Grading, Stipple/Dither,
SSAO, God Rays, Contact
Shadows, Caustics, Fog Shafts)"]
        ShadowSystem["Shadow System
(4-Cascade CSM, Point
Cubemap, Spot 2D Array)"]
        SpriteBatch["SpriteBatchRenderer
(GPU Instanced)"]
        SpriteAtlas["SpriteTextureAtlas
(4096x4096 Shelf-Pack)"]
        ParticleRenderer["ParticleRenderer
(GPU Instanced Billboards,
16384 Particles)"]
        RetroEffects["RetroEffects
(CRT, Pixelation, Dither)"]
        Skybox["Skybox
(Cubemap, Procedural,
Solid Color)"]

        subgraph RayTracing["Ray Tracing Pipeline"]
            RTCapabilities["RTCapabilities
(Extension Detection)"]
            AccelStructures["AccelerationStructureManager
(BLAS Cache, TLAS Rebuild)"]
            RTPipeline["RTPipeline
(SBT Construction)"]
            RTShadows["RTShadows (R16F)"]
            RTReflections["RTReflections (RGBA16F)"]
            RTAO["RTAO (R16F)"]
            RTGI["RTGI (RGBA16F)"]
            PathTracer["PathTracer
(Progressive Accumulation)"]
            SVGFDenoiser["SVGFDenoiser
(3-Pass Compute)"]
            OIDNDenoiser["OIDNDenoiser
(Intel Neural Denoise)"]
            RTCompositor["RTCompositor
(Fullscreen Compute)"]
        end

        subgraph AdvancedRendering["Advanced Rendering"]
            SHProbes["SH Light Probes
(L2, Grid Baking)"]
            SDFScene["SDF Scene
(6 Primitives, 6 Ops)"]
            OIT["OIT
(Weighted Blended)"]
            CelShading["Cel Shading
(Band Quantization,
Sobel Outlines)"]
            VXGI["Voxel Cone Tracing
(Diffuse/Specular GI)"]
            NonEuclidean["Non-Euclidean Geometry
(Portal, Hyperbolic,
Spherical, Toroidal)"]
            Metaballs["Metaball Rendering
(Marching Cubes)"]
        end

        subgraph GPUDriven["GPU-Driven Pipeline"]
            GPUCulling["GPUCulling
(Two-Phase HiZ
Occlusion Culling)"]
            ClusteredLighting["ClusteredLighting
(16x9x24 Grid,
Compute Dispatch)"]
            LODSystem["LOD System
(Screen-Space Sizing,
Hysteresis)"]
            VRSSystem["Variable Rate Shading
(VK_KHR_fragment_shading_rate)"]
            VirtualTex["Virtual Texturing
(Page Streaming,
Indirection Table)"]
            VisBuffer["Visibility Buffer
(Deferred Material Resolve)"]
            FrameAlloc["FrameAllocator
(Per-Frame Linear Alloc)"]
        end
    end

    subgraph ECSLayer["ECS Architecture"]
        World["ECS::World
(Thread-Safe, Deferred
Destroy, Name Cache)"]
        Entity["ECS::Entity (u64 ID)"]
        Components["70+ Component Types"]

        subgraph ComponentCategories["Component Categories"]
            CoreComponents["Core: Transform, Mesh,
Material, Light, Camera,
Name, Notes"]
            PhysicsComponents["Physics: Rigidbody,
Box/Sphere/Capsule Collider,
6 Joint Types, Ragdoll"]
            GameplayComponents["Gameplay: Health, Damage,
Inventory, SaveData,
Quest, HUD, Cinematic"]
            VisualComponents["Visual: Sprite2D, Tilemap,
ParticleEmitter, Billboard,
AnimatedSprite2D"]
            ControllerComponents["Controllers: Platformer2D,
TopDown2D/3D, FPS, TPS,
Vehicle"]
            AIComponents["AI: AIController,
BehaviorTree, Waypoint,
FollowTarget, LookAtTarget"]
            NetworkComponents["Network: NetworkIdentity,
NetworkTransform"]
        end

        subgraph Systems["ECS Systems"]
            ControllerSystem["ControllerSystem
(6 Controller Types)"]
            AISystem["AISystem
(Patrol/Chase/Flee/
Wander/Navmesh)"]
        end
    end

    subgraph PhysicsLayer["Physics"]
        IPhysicsBackend["IPhysicsBackend
(Abstract 3D Interface)"]
        IPhysicsBackend2D["IPhysicsBackend2D
(Abstract 2D Interface)"]
        JoltBackend["JoltBackend
(Jolt v5.2.0, Multi-threaded,
CCD, 6 Joint Types)"]
        Box2DBackend["Box2DBackend
(Box2D v3.0.0, Sub-stepping,
5 Joint Types, CCD)"]
        PhysicsFactory["PhysicsBackendFactory
(Auto/Jolt/Box2D)"]
        SpatialHash["SpatialHashGrid
(Broad-Phase O(N) vs O(N^2))"]
    end

    subgraph AudioLayer["Audio"]
        SimpleAudio["SimpleAudio
(miniaudio Backend)"]
        SteamAudio["SteamAudioProcessor
(HRTF Binaural Rendering,
Occlusion + Transmission,
Geometry-Aware 3D)"]
        Audio3D["3D Spatialization"]
        AudioMixing["Multi-Channel Mixing"]
        MIDIInput["MIDI Input
(WinMM, 12 AS Bindings)"]
        AudioEventGraph["Audio Event Graph
(Runtime Execution,
.enjaudiopkg)"]
    end

    subgraph ScriptingLayer["Scripting"]
        AngelScript["AngelScript Engine
(~844 Bindings,
Hot-Reload)"]
        TegeBehavior["TegeBehavior
(Base Script Class)"]
        VisualScript["Visual Scripting
(222+ Nodes, Debugger,
Profiler)"]
        StateMachine["State Machines
(Script Callbacks)"]
        Coroutines["Coroutines
(Yield/Resume)"]
        EventBus["EventBus
(Pub/Sub Events)"]
        FlashShim["Flash API Shim
(~40 Bindings,
AS2/AS3 Transpiler)"]
        DataAssets["DataAsset System
(Schemas + Instances)"]
    end

    subgraph EffectsLayer["Effects & Procedural"]
        Weather["WeatherSystem
(Rain, Snow, Fog, Storm)"]
        Water3D["Water3D
(Gerstner Waves)"]
        InteractiveWater["Interactive Water
(Spring-Damper, Buoyancy)"]
        ParticleSystem["ParticleSystem
(CPU Sim, 5 Shapes,
12 Presets)"]
        FluidSim["Fluid Simulation
(Stable Fluids, 5 Presets)"]
        FluidTerrain["FluidTerrainCoupling
(Erosion + Accumulate)"]
        ReactionDiffusion["Reaction-Diffusion
(Gray-Scott, 9 Presets)"]
        CellularAutomata["CA Geometry
(7 Rules, 3 Mesh Modes)"]
        Physarum["Physarum Simulation
(50K+ Agents)"]
        FourierMesh["Fourier Mesh
(DFT, 3D Extrusion)"]
        Projection4D["4D Projection
(5 Polytopes)"]
        WindSystem["Wind System"]
        WorldTime["World Time / Seasons"]

        subgraph ProceduralGen["Procedural Generation"]
            CellularAutomataGen["Cellular Automata
(Cave Gen)"]
            BSP["BSP
(Room-Corridor Dungeons)"]
            DiamondSquare["Diamond-Square
(Heightmap Terrain)"]
            LSystem["L-System
(3D Stochastic Rules)"]
            WFC["Wave Function Collapse
(Tile-Based)"]
            Voronoi["Voronoi
(3 Distance Metrics)"]
            RandomWalker["Random Walker"]
            Grammar["Grammar Rules"]
            PrefabAssembler["Prefab Assembler
(Snap-Together Rooms)"]
            FractalTerrain["Fractal Terrain
(fBm, Erosion)"]
        end
    end

    subgraph NetworkingLayer["Networking"]
        LANMultiplayer["LAN Multiplayer
(Host-Authoritative UDP)"]
        NetworkSecurity["Network Security
(HMAC-SHA256, Replay
Protection)"]
        HTTPClient["HTTP Client
(WinHTTP + libcurl)"]
        NewgroundsAPI["Newgrounds.io API
(Medals, Scores, Cloud)"]
        SteamBackend["Steam Save Backend
(ENJIN_STEAM)"]
    end

    subgraph GUILayer["GUI / UI System"]
        UICanvas["UICanvasComponent
(Element Tree, Themes)"]
        UISystem["UISystem
(Layout, Render, Input,
Focus Navigation)"]
        UIWidgets["8 Widget Types
(Panel, Button, Label,
Image, Progress, Slider,
Checkbox, Toggle)"]
        NineSlice["Nine-Slice Sprites"]
        DialogueBox["DialogueBoxComponent
(Auto-Build UI)"]
        FocusNav["Focus Navigation
(Tab/DPad/Arrow, WCAG)"]
    end

    subgraph AccessibilityLayer["Accessibility"]
        ColorblindFilter["Colorblind Filter
(8 Modes + Safe Palettes)"]
        SubtitleSystem["Subtitle System"]
        ContentWarning["Content Warning System"]
        ReducedMotion["Reduced Motion"]
        ScreenReader["Screen Reader Announcer"]
        SwitchAccess["Switch Access
(One-Button Scanning)"]
        DwellClick["Dwell-Click / Sticky Drag"]
        AltInput["Alternative Input
(Eye Tracking, Head
Tracking, Sip-and-Puff)"]
        HighContrast["High Contrast Themes
(WCAG AAA 7:1+)"]
        FontScaling["Font Scaling /
Dyslexia Mode"]
    end

    subgraph BuildLayer["Build & Assets"]
        BuildPipeline["BuildPipeline
(Scan, Validate, Pack,
NSIS Installer, CPack)"]
        AssetPacker["AssetPacker
(.enjpak, CRC32, XOR)"]
        GLTFLoader["GLTFLoader
(Native glTF/GLB)"]
        AssimpLoader["AssimpLoader
(FBX/OBJ/DAE/PLY/VOX)"]
        SceneImporter["SceneImporter
(Auto-Detect Format)"]
        PrefabManager["PrefabManager
(.enjprefab)"]
        HTML5Export["HTML5 Export
(Canvas, Preloader,
Newgrounds Template)"]
        SceneSerializer["SceneSerializer
(JSON)"]
        LevelStreaming["Level Streaming
(StreamingVolume/Portal)"]
    end

    subgraph ToolsLayer["Graph Editors & Tools"]
        ShaderGraph["Shader Graph
(62 Nodes, GLSL Codegen,
.enjshader)"]
        ParticleGraph["Particle Graph
(Compiler to Emitter,
.enjparticle)"]
        DialogueEditor["Dialogue Editor
(7 Node Types, .enjdlg)"]
        BehaviorTreeEditor["Behavior Tree Editor
(20 Node Types)"]
        QuestFlowEditor["Quest Flow Editor"]
        TimelineEditor["Timeline Editor
(Flash-Style, Keyframes)"]
        PixelEditor["Pixel Editor
(8 Tools, 9 Retro Presets)"]
        VectorDrawing["Vector Drawing Editor
(7 Shapes, SVG Export)"]
        Profiler["Profiler
(P50/P95/P99, CSV Export)"]
        PluginSystem["Plugin System
(Hot-Reload, PluginSDK.h)"]
    end

    subgraph CoreLayer["Core Layer (No Engine Dependencies)"]
        Application["Application"]
        Window["Window (GLFW)"]
        Input["Input System"]
        MathLib["Math Library
(Vector, Matrix, Quaternion,
Spline, Noise)"]
        Memory["Memory Allocators
(Stack, Pool, Linear)"]
        Logging["Logging
(Thread-Safe, Categorized)"]
        Platform["Platform Abstraction
(PlatformTarget)"]
        Types["Type Aliases
(u8-u64, i8-i64, f32/f64)"]
    end

    %% Application -> Editor Systems
    Editor --> PlayMode
    Editor --> Panels
    Editor --> ScenePicker
    Editor --> Gizmos
    Editor --> TemplateSystem
    Editor --> Notifications
    Editor --> CommandPalette

    %% Editor -> Engine
    PlayMode --> RenderSystem
    PlayMode --> PhysicsFactory
    PlayMode --> AngelScript
    PlayMode --> VisualScript
    PlayMode --> AISystem
    PlayMode --> SimpleAudio

    %% Player -> Engine
    Player --> RenderSystem
    Player --> PhysicsFactory
    Player --> AngelScript
    Player --> VisualScript
    Player --> ParticleSystem
    Player --> PostProcessing

    %% Renderer connections
    RenderSystem --> VulkanPipeline
    RenderSystem --> VulkanBuffer
    RenderSystem --> ShadowSystem
    RenderSystem --> SpriteBatch
    RenderSystem --> SpriteAtlas
    RenderSystem --> ParticleRenderer
    RenderSystem --> Skybox
    RenderSystem --> SHProbes
    VulkanPipeline --> VulkanContext
    VulkanBuffer --> VulkanContext
    VulkanRenderer --> VulkanContext
    PostProcessing --> VulkanPipeline
    RetroEffects --> PostProcessing

    %% RT connections
    RenderSystem --> AccelStructures
    AccelStructures --> RTPipeline
    RTPipeline --> RTShadows
    RTPipeline --> RTReflections
    RTPipeline --> RTAO
    RTPipeline --> RTGI
    RTPipeline --> PathTracer
    RTShadows --> SVGFDenoiser
    RTReflections --> SVGFDenoiser
    RTAO --> SVGFDenoiser
    RTGI --> SVGFDenoiser
    SVGFDenoiser --> RTCompositor
    OIDNDenoiser --> RTCompositor

    %% Physics
    PhysicsFactory --> JoltBackend
    PhysicsFactory --> Box2DBackend
    PhysicsFactory --> SimplePhysics
    JoltBackend --> IPhysicsBackend
    Box2DBackend --> IPhysicsBackend2D
    ControllerSystem --> IPhysicsBackend
    ControllerSystem --> IPhysicsBackend2D

    %% ECS
    World --> Entity
    World --> Components
    RenderSystem --> World
    ControllerSystem --> World
    AISystem --> World

    %% Scripting
    AngelScript --> TegeBehavior
    AngelScript --> World
    AngelScript --> SimpleAudio
    VisualScript --> World
    VisualScript --> IPhysicsBackend

    %% Build
    BuildPipeline --> AssetPacker
    BuildPipeline --> SceneSerializer
    SceneImporter --> GLTFLoader
    SceneImporter --> AssimpLoader

    %% Core dependencies
    RenderSystem --> MathLib
    World --> Memory
    Application --> Window
    Window --> Input
    Application --> Logging
    Application --> Platform

flowchart TB
    FrameStart["Frame Start
(VulkanRenderer::BeginFrame)"] --> FlushDestroy["Flush Deferred
Entity Destruction"]
    FlushDestroy --> UpdateSystems["Update ECS Systems
(Controllers, Physics,
Scripts, AI)"]
    UpdateSystems --> ClassifyScene["ClassifySceneComposition()"]

    ClassifyScene --> Is2D{Scene Type?}

    Is2D -->|"Scene2D: Sprites/Tilemaps Only"| Path2D["2D Fast Path"]
    Is2D -->|"Scene2_5D: Sprites + Lights"| Path25D["2.5D Path"]
    Is2D -->|"Scene3D: 3D Meshes Present"| Path3D["3D Full Path"]

    subgraph Path2DBlock["2D Pipeline"]
        Path2D --> SkipShadows2D["Skip ALL Shadow Passes"]
        SkipShadows2D --> MinimalUBO["Upload Minimal LightingUBO
(Ambient + Fog Only)"]
        MinimalUBO --> SkipNormalMap["Skip Normal Map
Descriptor Writes"]
    end

    subgraph Path25DBlock["2.5D Pipeline"]
        Path25D --> SkipShadows25D["Skip Shadow Passes"]
        SkipShadows25D --> FullLightingUBO["Upload Full LightingUBO
(Lights for Lit Sprites)"]
        FullLightingUBO --> BindNormalMap25D["Bind Normal Map
Descriptors"]
    end

    subgraph Path3DBlock["3D Full Pipeline"]
        Path3D --> ShadowCasterCache["Build Shadow Caster
Cache (Pre-filtered)"]

        ShadowCasterCache --> DirShadow["Directional Light
Shadow Pass"]
        subgraph CSMCascades["4-Cascade CSM"]
            DirShadow --> C0["Cascade 0
(Near)"]
            DirShadow --> C1["Cascade 1"]
            DirShadow --> C2["Cascade 2"]
            DirShadow --> C3["Cascade 3
(Far)"]
        end

        ShadowCasterCache --> PointShadow["Point Light Shadows
(Up to 4 Cubemaps,
512^2 per face)"]
        ShadowCasterCache --> SpotShadow["Spot Light Shadows
(Up to 4, 2D Array,
1024^2)"]

        C3 --> FullUBO3D["Upload Full LightingUBO
(Multi-Light Arrays,
Shadow Data, SH Probes)"]
        PointShadow --> FullUBO3D
        SpotShadow --> FullUBO3D
        FullUBO3D --> BindNormalMap3D["Bind Normal Map
Descriptors"]

        BindNormalMap3D --> RTCheck{"RT Hardware Available?"}
        RTCheck -->|Yes| RTPipelineExec["Ray Tracing Pipeline"]

        subgraph RayTracingBlock["Ray Tracing (Scene3D Only)"]
            RTPipelineExec --> BuildTLAS["Rebuild TLAS
(Per-Frame)"]
            BuildTLAS --> DispatchRT["Dispatch RT Effects"]
            DispatchRT --> RTShadowsD["RT Shadows
(1 SPP)"]
            DispatchRT --> RTReflectD["RT Reflections
(Specular)"]
            DispatchRT --> RTAOD["RT AO
(Hemisphere)"]
            DispatchRT --> RTGID["RT GI
(Multi-Bounce)"]
            RTShadowsD --> Denoise["Denoise
(SVGF or OIDN)"]
            RTReflectD --> Denoise
            RTAOD --> Denoise
            RTGID --> Denoise
            Denoise --> Composite["RT Compositor
(Fullscreen Compute)"]
        end

        RTCheck -->|No| SkipRT["Skip RT"]
    end

    SkipNormalMap --> MainPass
    BindNormalMap25D --> MainPass
    BindNormalMap3D --> MainPass
    Composite --> MainPass
    SkipRT --> MainPass

    subgraph MainRenderPass["Main Render Pass"]
        MainPass["Begin Render Pass"] --> SkyboxR["Render Skybox
(if type != None)"]
        SkyboxR --> SortEntities["Sort Entities by
64-bit Material Sort Key"]
        SortEntities --> HiZCull["GPU Two-Phase HiZ
Occlusion Culling"]
        HiZCull --> ClusterAssign["Clustered Light
Assignment (16x9x24)"]
        ClusterAssign --> LODSelect["LOD Selection
(Screen-Space + Hysteresis)"]
        LODSelect --> OpaquePass["Opaque Pass"]

        subgraph OpaqueLoop["Per-Entity Rendering"]
            OpaquePass --> CheckVisible{entity.visible?}
            CheckVisible -->|No| SkipEntity["Skip"]
            CheckVisible -->|Yes| PushConstants["Upload Push Constants
(128 bytes: Model Matrix,
Material Props, Flags)"]
            PushConstants --> DescCache{"Descriptor Cache Hit?"}
            DescCache -->|Yes| SkipDescWrite["Skip Descriptor Write"]
            DescCache -->|No| UpdateDesc["Update Descriptors
(Bindings 3/5/6/7/8/9,
14-15 Cluster, 16-17 VT)"]
            SkipDescWrite --> DrawCall["vkCmdDrawIndexed"]
            UpdateDesc --> DrawCall
        end

        DrawCall --> OITCheck{"OIT Entities Present?"}
        OITCheck -->|Yes| OITPass["OIT Weighted Blended
Pass + Composite"]
        OITCheck -->|No| SkipOIT["Skip OIT"]

        OITPass --> SpritePass
        SkipOIT --> SpritePass

        SpritePass["Sprite Batch Rendering"] --> AtlasCheck{"Atlas Sprites?"}
        AtlasCheck -->|Yes| AtlasBatch["Single Instanced Draw
(Atlas Texture)"]
        AtlasCheck -->|No| IndividualDraw["Individual Draws
(Oversized/Excluded)"]

        AtlasBatch --> ParticlePass
        IndividualDraw --> ParticlePass

        ParticlePass["Particle Rendering
(GPU Instanced Billboards)"]
        ParticlePass --> VegetationPass["Vegetation Pass
(Grass/Shrub/Tree)"]
        VegetationPass --> WaterPass["Water Rendering
(Gerstner Waves)"]
        WaterPass --> DebugViz["Debug Visualization
(Collider Wireframes,
Joint Lines, SH Probes)"]
    end

    DebugViz --> PostProcess

    subgraph PostProcessBlock["Post-Processing Chain"]
        PostProcess["Post-Processing"] --> Bloom["Bloom
(Threshold + Blur)"]
        Bloom --> SSAO_PP["SSAO
(Multiplicative, HDR)"]
        SSAO_PP --> ContactShadows_PP["Contact Shadows
(Ray March, HDR)"]
        ContactShadows_PP --> Caustics_PP["Fake Caustics
(Additive, HDR)"]
        Caustics_PP --> GodRays_PP["God Rays
(Radial Blur, HDR)"]
        GodRays_PP --> FogShafts_PP["Fog Shafts
(Volumetric, HDR)"]
        FogShafts_PP --> DOF["Depth of Field
(Poisson Disc)"]
        DOF --> TiltShift["Tilt-Shift
(Focus Band Blur)"]
        TiltShift --> CelOutlines["Cel Shading Outlines
(Sobel Edge Detection)"]
        CelOutlines --> StippleDither["Stipple / Dither
(8 Patterns, 3 Color
Modes)"]
        StippleDither --> ColorGrading["Color Grading"]
        ColorGrading --> FXAA["FXAA"]
        FXAA --> Vignette["Vignette"]
        Vignette --> FilmGrain["Film Grain"]
        FilmGrain --> RetroFX["Retro Effects
(CRT, Pixelation)"]
    end

    RetroFX --> EditorOverlay

    subgraph EditorOverlayBlock["Editor Overlay (Editor Only)"]
        EditorOverlay["ImGui Overlay"] --> ImGuiPanels["Editor Panels
(Hierarchy, Inspector,
Console, etc.)"]
        ImGuiPanels --> GameView["Game View Viewport
(RenderToTarget)"]
        GameView --> GizmoOverlay["Gizmo Overlay
(ImGuizmo)"]
    end

    GizmoOverlay --> Present["Present
(vkQueuePresentKHR)"]

    style Path2DBlock fill:#1a3a1a,stroke:#4a8a4a
    style Path25DBlock fill:#2a2a3a,stroke:#6a6aaa
    style Path3DBlock fill:#3a1a1a,stroke:#aa4a4a
    style RayTracingBlock fill:#2a1a3a,stroke:#8a4aaa
    style PostProcessBlock fill:#1a2a3a,stroke:#4a7aaa

pie title Frame Budget Breakdown (3D, 60fps)
    "Shadow Passes (CSM + Point + Spot)" : 2.5
    "GPU Culling + Cluster Assign (Async)" : 0.8
    "Scene Classification + UBO Upload" : 0.4
    "Main Render Pass (Opaque)" : 3.5
    "Sprite Batch Rendering" : 1.5
    "Particle Rendering" : 1.0
    "Post-Processing Chain" : 2.5
    "ECS Systems (Physics, AI, Scripts)" : 3.0
    "ImGui / Editor Overlay" : 1.0
    "Remaining Headroom" : 0.47

graph TB
    subgraph CoreDeps["Core Dependencies"]
        Types["Types (u8-u64)"]
        MathLib["Math Library"]
        Logging["Logging System"]
        Memory["Memory Allocators"]
        Platform["Platform Layer"]
        Window["Window (GLFW)"]
        Input["Input System"]
    end

    subgraph VulkanDeps["Vulkan Foundation"]
        VkContext["VulkanContext
(25+ VkResult Checks)"]
        VkRenderer["VulkanRenderer"]
        VkPipeline["VulkanPipeline"]
        VkBuffer["VulkanBuffer"]
        VkImage["VulkanImage"]
    end

    subgraph ECSDeps["ECS Foundation"]
        World["ECS::World
(O(1) Entity Validation)"]
        Entity["ECS::Entity"]
        Components["Component Types"]
    end

    subgraph RenderFeatures["Rendering Features"]
        RenderSys["RenderSystem"]
        Shadows["Shadow Mapping
(CSM w/ Cascade Blending,
Point/Spot)"]
        PostProc["Post-Processing"]
        SpriteBatch["Sprite Batching
(Normal Map Lighting,
Drop Shadows)"]
        SpriteAtlas["Sprite Atlas"]
        ParticleRend["Particle Renderer"]
        Skybox["Skybox"]
        SHProbes["SH Light Probes"]
        OIT["OIT"]
        CelShade["Cel Shading"]
        RetroFX["Retro Effects"]
        GPUCull["GPU HiZ Occlusion Culling"]
        ClusteredLt["Clustered Forward Lighting
(16x9x24)"]
        LODSys["LOD System
(Hysteresis)"]
        MatSortKeys["64-bit Material Sort Keys"]
        FrameAlloc["FrameAllocator"]
    end

    subgraph OptionalRender["Optional Render Features (CMake Flags)"]
        VRSSys["Variable Rate Shading"]
        VTSys["Virtual Texturing"]
        VisBuf["Visibility Buffer"]
    end

    subgraph RTFeatures["Ray Tracing Features"]
        RTCaps["RT Capabilities"]
        AccelStruct["Acceleration Structures"]
        RTPipe["RT Pipeline"]
        RTShadow["RT Shadows"]
        RTReflect["RT Reflections"]
        RTAO["RT AO"]
        RTGI["RT GI"]
        PathTrace["Path Tracer"]
        SVGF["SVGF Denoiser"]
        OIDN["OIDN Denoiser"]
        RTComp["RT Compositor"]
    end

    subgraph PhysicsFeatures["Physics Features"]
        IPhysics["IPhysicsBackend"]
        IPhysics2D["IPhysicsBackend2D"]
        Jolt["Jolt Backend"]
        Box2D["Box2D Backend"]
        PhysicsFactory["Backend Factory
(Jolt/Box2D Only)"]
        Collision["Collision Detection"]
        SpatialHash["Spatial Hash Grid"]
        Joints["Joint System"]
        Ragdoll["Ragdoll"]
    end

    subgraph ScriptFeatures["Scripting Features"]
        ASEngine["AngelScript Engine"]
        Bindings["Script Bindings (~844)"]
        VisScript["Visual Scripting"]
        VSDebugger["VS Debugger"]
        VSProfiler["VS Profiler"]
        StateMachine["State Machines"]
        Coroutines["Coroutines"]
        EventBus["Event Bus"]
        FlashShim["Flash API Shim"]
        Transpiler["AS2/AS3 Transpiler"]
        DataAssets["DataAsset System"]
    end

    subgraph GameplayFeatures["Gameplay Features"]
        SaveSystem["Tiered Save System"]
        SaveBackends["Save Backends
(Local/NG/Steam)"]
        QuestSys["Quest System"]
        DialogueSys["Dialogue System"]
        AISys["AI System"]
        BehaviorTree["Behavior Trees"]
        Navmesh["Navmesh / A*"]
        Destructible["Destructible System"]
        HUD["HUD System"]
        Cinematic["Cinematic Camera"]
        Localization["Localization"]
        ObjectPool["Object Pooling"]
    end

    subgraph EditorFeatures["Editor Features"]
        EditorLayer["EditorLayer"]
        PlayMode["PlayMode"]
        Inspector["Inspector Panel"]
        Hierarchy["Hierarchy Panel"]
        ScenePicker["Scene Picker"]
        Gizmos["Transform Gizmos"]
        Templates["Template System
(MaturityTier Badges)"]
        Marketplace["Template Marketplace"]
        Undo["Undo/Redo"]
        CmdPalette["Command Palette"]
    end

    subgraph EffectFeatures["Effects Features"]
        Weather["Weather System"]
        Water["Water3D"]
        Particles["Particle System"]
        FluidSim["Fluid Simulation"]
        FluidTerrain["Fluid-Terrain Coupling"]
        ProcGen["Procedural Generation"]
        WindSys["Wind System"]
        WorldTime["World Time"]
    end

    subgraph AudioFeatures["Audio Features"]
        SimpleAudioSys["SimpleAudio
(miniaudio)"]
        SteamAudioProc["SteamAudioProcessor
(HRTF, Occlusion,
Transmission)"]
        AudioEvents["Audio Event Graph"]
        MIDI["MIDI Input"]
    end

    subgraph TestFeatures["Test Infrastructure"]
        TestFramework["EnjinTest.h Framework"]
        UnitTests["22 Unit Test Suites"]
        IntegrationTests["4 Integration Tests"]
    end

    subgraph NetworkFeatures["Networking"]
        LANMulti["LAN Multiplayer"]
        NetSecurity["HMAC-SHA256 Auth"]
        HTTP["HTTP Client"]
        Newgrounds["Newgrounds API"]
    end

    subgraph BuildFeatures["Build & Export"]
        BuildPipe["Build Pipeline"]
        AssetPack["Asset Packer (.enjpak)"]
        HTML5["HTML5 Export"]
        PlayerApp["Player App"]
        SceneSerial["Scene Serializer"]
    end

    subgraph UIFeatures["UI System"]
        UICanvas["UICanvasComponent"]
        UISys["UISystem"]
        FocusNav["Focus Navigation"]
        DialogueBox["Dialogue Box"]
    end

    subgraph AccessFeatures["Accessibility"]
        Colorblind["Colorblind Filter"]
        ScreenReader["Screen Reader"]
        SwitchAccess["Switch Access"]
        HighContrast["High Contrast"]
        FontScale["Font Scaling"]
    end

    subgraph GraphEditors["Graph Editors"]
        ShaderGraph["Shader Graph"]
        AudioGraph["Audio Event Graph"]
        ParticleGraph["Particle Graph"]
        DialogueEd["Dialogue Editor"]
        BTEditor["BT Editor"]
        QuestEditor["Quest Flow Editor"]
    end

    %% Core -> Vulkan
    Types --> VkContext
    Platform --> VkContext
    MathLib --> VkBuffer
    Window --> VkRenderer

    %% Vulkan -> Renderer
    VkContext --> VkRenderer
    VkContext --> VkPipeline
    VkContext --> VkBuffer
    VkContext --> VkImage
    VkPipeline --> RenderSys
    VkBuffer --> RenderSys
    VkImage --> RenderSys

    %% ECS -> Renderer
    World --> RenderSys
    Components --> RenderSys
    MathLib --> World

    %% Renderer -> Sub-features
    RenderSys --> Shadows
    RenderSys --> PostProc
    RenderSys --> SpriteBatch
    SpriteBatch --> SpriteAtlas
    RenderSys --> ParticleRend
    RenderSys --> Skybox
    RenderSys --> SHProbes
    RenderSys --> OIT
    PostProc --> CelShade
    PostProc --> RetroFX
    RenderSys --> GPUCull
    RenderSys --> ClusteredLt
    RenderSys --> LODSys
    RenderSys --> MatSortKeys
    RenderSys --> FrameAlloc
    RenderSys --> VRSSys
    RenderSys --> VTSys
    RenderSys --> VisBuf
    VkContext --> ClusteredLt
    VkContext --> GPUCull
    VkContext --> VRSSys
    VkContext --> VTSys
    VkContext --> VisBuf

    %% RT Dependencies
    VkContext --> RTCaps
    RTCaps --> AccelStruct
    AccelStruct --> RTPipe
    RTPipe --> RTShadow
    RTPipe --> RTReflect
    RTPipe --> RTAO
    RTPipe --> RTGI
    RTPipe --> PathTrace
    RTShadow --> SVGF
    RTReflect --> SVGF
    RTAO --> SVGF
    RTGI --> SVGF
    RTShadow --> OIDN
    SVGF --> RTComp
    OIDN --> RTComp
    RTComp --> RenderSys
    RenderSys --> AccelStruct

    %% Physics Dependencies
    World --> IPhysics
    World --> IPhysics2D
    IPhysics --> Jolt
    IPhysics2D --> Box2D
    PhysicsFactory --> Jolt
    PhysicsFactory --> Box2D
    Collision --> SpatialHash
    IPhysics --> Joints
    Joints --> Ragdoll

    %% Scripting Dependencies
    World --> ASEngine
    ASEngine --> Bindings
    Bindings --> IPhysics
    Bindings --> IPhysics2D
    World --> VisScript
    VisScript --> VSDebugger
    VisScript --> VSProfiler
    ASEngine --> Coroutines
    ASEngine --> EventBus
    ASEngine --> StateMachine
    ASEngine --> FlashShim
    FlashShim --> Transpiler
    ASEngine --> DataAssets

    %% Gameplay Dependencies
    World --> SaveSystem
    SaveSystem --> SaveBackends
    SaveBackends --> Newgrounds
    World --> QuestSys
    World --> DialogueSys
    World --> AISys
    AISys --> Navmesh
    AISys --> BehaviorTree
    IPhysics --> AISys
    World --> Destructible
    IPhysics --> Destructible
    World --> Cinematic
    World --> ObjectPool

    %% Editor Dependencies
    RenderSys --> EditorLayer
    World --> EditorLayer
    EditorLayer --> PlayMode
    PlayMode --> IPhysics
    PlayMode --> ASEngine
    PlayMode --> VisScript
    PlayMode --> AISys
    EditorLayer --> Inspector
    EditorLayer --> Hierarchy
    EditorLayer --> ScenePicker
    EditorLayer --> Gizmos
    EditorLayer --> Templates
    Templates --> Marketplace
    EditorLayer --> Undo
    EditorLayer --> CmdPalette

    %% Effects Dependencies
    World --> Weather
    World --> Particles
    RenderSys --> Water
    FluidSim --> FluidTerrain
    World --> ProcGen

    %% Network Dependencies
    World --> LANMulti
    LANMulti --> NetSecurity
    HTTP --> Newgrounds

    %% Build Dependencies
    SceneSerial --> BuildPipe
    BuildPipe --> AssetPack
    BuildPipe --> HTML5
    BuildPipe --> PlayerApp
    PlayerApp --> RenderSys
    PlayerApp --> PhysicsFactory

    %% UI Dependencies
    World --> UICanvas
    UICanvas --> UISys
    UISys --> FocusNav
    DialogueSys --> DialogueBox
    UICanvas --> DialogueBox
    UISys --> ScreenReader

    %% Accessibility Dependencies
    PostProc --> Colorblind
    UISys --> SwitchAccess
    UISys --> FontScale

    %% Audio Dependencies
    SimpleAudioSys --> SteamAudioProc
    SteamAudioProc --> IPhysics
    PlayMode --> SteamAudioProc
    PlayerApp --> SteamAudioProc
    Bindings --> SimpleAudioSys
    SimpleAudioSys --> AudioEvents
    Input --> MIDI

    %% Test Infrastructure
    TestFramework --> UnitTests
    TestFramework --> IntegrationTests
    World --> UnitTests
    IPhysics --> UnitTests
    SceneSerial --> IntegrationTests
    ASEngine --> IntegrationTests

    %% Graph Editor Dependencies
    VkPipeline --> ShaderGraph
    Particles --> ParticleGraph
    DialogueSys --> DialogueEd
    BehaviorTree --> BTEditor
    QuestSys --> QuestEditor

    style CoreDeps fill:#1a2a1a,stroke:#4a8a4a
    style VulkanDeps fill:#1a1a2a,stroke:#4a4a8a
    style ECSDeps fill:#2a1a1a,stroke:#8a4a4a
    style RTFeatures fill:#2a1a2a,stroke:#8a4a8a
    style AudioFeatures fill:#2a2a2a,stroke:#9a6a3a
    style TestFeatures fill:#1a2a1a,stroke:#6a9a6a
    style PhysicsFeatures fill:#1a2a2a,stroke:#4a8a8a
    style ScriptFeatures fill:#2a2a1a,stroke:#8a8a4a
    style GameplayFeatures fill:#2a1a2a,stroke:#8a4a8a
    style OptionalRender fill:#1a1a2a,stroke:#5a5aaa