Lithos Integration

Coverage map of Lithos rendering substrate across Universe

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Zodiac Homes — Lithos Coverage

Rendering Pipeline

sceneSDF(vec3 p) → lithos-emit.mjs → frustum cull + LOD → constant bake → GLSL template → serve.mjs /lithos/emit → WebGL compile → fullscreen quad

Scene Registry

Scene	Objects	Types	Shader Template	Status

SDF Emitter Registry

Type	Category	Emitter Function	Used By

Lithos Primitives

24-Glyph Language

Glyph	Name	GLSL	Domain

ARM64 Benchmark Summary

619

Functions

82.5%

Win Rate

1.49x

Geomean vs -O2

5.3x

Compositions

11x

Dot Product

16x

Sin/Cos

510 of 618 ARM64 blobs beat GCC -O2

Integration Gaps

Gap	Severity	Impact
WASM SIMD128 backend	Blocker	Browser-side Lithos blocked; scalar-only POC exists
10 homes without Lithos mode	Medium	Only Virgo + Taurus have full pipelines; Capricorn routed but no template
Cosmos not integrated	Medium	cosmos.html (10k lines) has no Lithos path
GPU shaders not ported	Future	Galaxy, sun, earth shaders still monolithic GLSL
Scene graph still Three.js	Future	Phase 3: flat WASM arrays replace Object3D tree
No parity test harness	Medium	Can't validate JS vs Lithos output automatically

Four-Phase Migration

Phase	Target	Status	What Changes
1	CPU modules → WASM	Blocked	Octree, rotation, nav, transitions compiled to .ls → WASM
2	GPU kernels → Lithos	Active	SDF homes use paint package emitter (2/12 complete)
3	Scene graph replacement	Future	Three.js Object3D → flat struct arrays in WASM
4	DOM bridge elimination	Future	Pure WASM + GPU, minimal JS bootstrap

Polygon Optimization Library

Files

1,704

Lines

14/18

Roadmap Tasks

Blocked on WebGPU

Library	Lines	Key Exports	Phase
`polygon_optimize.mjs`	103	`optimizeScene`, `assessPhase`, `installOptimizations`	Facade
`wind.mjs`	99	`createWindMaterial`, `WIND_PRESETS`	Phase 2
`shader_animation.mjs`	106	`createAnimatedMaterial`, `ANIMATION_PRESETS`	Phase 2
`instanced.mjs`	118	`convertRepeatedMeshes`, `createScatterInstanced`	Phase 1
`lod.mjs`	145	`autoLOD`, `createSimplifiedGeometry`, `LODManager`	Phase 1
`material_optimizer.mjs`	138	`deduplicateMaterials`, `createUberMaterial`	Phase 1
`culling.mjs`	154	`createChunkedCuller`, `CullingPipeline`	Phase 2
`perf.mjs`	116	`createPerfDashboard`, `PHASE_TARGETS`	All
`sdf_shadows.mjs`	140	`SDF_SHADOW_GLSL`, `createShadowPass`	Phase 4
`hybrid_renderer.mjs`	157	`createHybridRenderer`, `installHybridMode`	Phase 4

Full polygon optimization roadmap →

Creature Physics

Libraries

364

Lines

10/12

Homes w/ Creatures

Capabilities

Library	Lines	Key Exports	Status
`creature_physics.mjs`	245	`createGroundFollower`, `createLocomotion`, `createStateMachine`, `createBoids`, `createIK2Bone`	Built
`creature_gait.mjs`	119	`createGait`, `createLegAnimator`, `QUADRUPED_PRESETS`	Built

Capability Coverage

Capability	Coverage	Notes
Breathing	10/12	sin() animation across most homes
Path following	4/12	Lissajous, helix, spline paths
Ground follow	0/12	Library built, not applied
State machine	0/12	Library built, not applied
IK legs	0/12	2-bone solver built, not applied
Flocking	1/12	Cave fish only (Scorpio)

Creature physics details →