# Three.js

> Three.js — the JavaScript 3D library. Production reference: scene graph, cameras & controls, geometry, materials & textures, lighting & shadows, the WebGL renderer, model loading (glTF), animation, raycasting, post-processing, and performance. Pro tier adds full per-class API references.
> Covers: Three.js as of the official docs snapshot 2026-08-02: the base tier covers fundamentals through production (scenes/scene graph, cameras & OrbitControls, geometry & primitives, materials & textures, lighting & shadows, fog & backgrounds, WebGL renderer, responsive sizing, glTF model loading, animation, raycasting/picking, post-processing, and a performance synthesis). The XL (Pro) tier adds deep full-API references across ~90 classes (materials family, custom shaders, textures, lights, renderer, geometry & buffers, objects, cameras, controls, math primitives, loaders, animation system, post-processing pipeline, instancing/batching).
> Not covered: WebGL/WebGPU renderer internals; custom GLSL shader authoring beyond ShaderMaterial wiring; physics engines; the react-three-fiber ecosystem; three.js editor/tooling. Agents should fall back to the official docs for those.

- [LLM Wiki](/raw/threejs/README.md)
- [Three.js Knowledge Base](/raw/threejs/wiki/index.md)
- [Animation](/raw/threejs/wiki/concepts/animation.md)
- [Cameras](/raw/threejs/wiki/concepts/cameras.md)
- [Controls (OrbitControls)](/raw/threejs/wiki/concepts/controls.md)
- [Fog and Backgrounds](/raw/threejs/wiki/concepts/fog-and-backgrounds.md)
- [Geometry Fundamentals](/raw/threejs/wiki/concepts/geometry-fundamentals.md)
- [Getting Started with Three.js](/raw/threejs/wiki/concepts/getting-started.md)
- [Lighting](/raw/threejs/wiki/concepts/lighting.md)
- [Loading 3D Models](/raw/threejs/wiki/concepts/loading-3d-models.md)
- [Materials](/raw/threejs/wiki/concepts/materials.md)
- [Performance and Optimization](/raw/threejs/wiki/concepts/performance.md)
- [Post-Processing](/raw/threejs/wiki/concepts/post-processing.md)
- [Primitives](/raw/threejs/wiki/concepts/primitives.md)
- [Raycasting and Picking](/raw/threejs/wiki/concepts/raycasting-and-picking.md)
- [Renderer](/raw/threejs/wiki/concepts/renderer.md)
- [Responsive Rendering](/raw/threejs/wiki/concepts/responsive-rendering.md)
- [Scene Graph](/raw/threejs/wiki/concepts/scene-graph.md)
- [Shadows](/raw/threejs/wiki/concepts/shadows.md)
- [Textures](/raw/threejs/wiki/concepts/textures.md)
- [Three.js Overview](/raw/threejs/wiki/concepts/threejs-overview.md)
- [Change Log](/raw/threejs/wiki/log.md)
- [Performance and Optimization: Keeping a Three.js App Fast](/raw/threejs/wiki/syntheses/performance-and-optimization.md)

## XL edition (Pro)

> Deeper per-item reference pages. Requires a subscription (/pro) — send
> `Authorization: Bearer <api key>` on the /raw/ URLs below.

- [XL Edition Index](/raw/threejs/wiki-xl/index.md) — Pro
- [Animation System — Full API Reference](/raw/threejs/wiki-xl/reference/animation-system-api.md) — Pro
- [Cameras — Full API Reference](/raw/threejs/wiki-xl/reference/cameras-api.md) — Pro
- [Controls — Full API Reference](/raw/threejs/wiki-xl/reference/controls-api.md) — Pro
- [Geometry & Buffers — Full API Reference](/raw/threejs/wiki-xl/reference/geometry-and-buffers-api.md) — Pro
- [Instancing and Batching — Full API Reference](/raw/threejs/wiki-xl/reference/instancing-and-batching.md) — Pro
- [Lights — Full API Reference](/raw/threejs/wiki-xl/reference/lights-api.md) — Pro
- [Loaders — Full API Reference](/raw/threejs/wiki-xl/reference/loaders-api.md) — Pro
- [Materials — Full API Reference](/raw/threejs/wiki-xl/reference/materials-api.md) — Pro
- [Math — Full API Reference](/raw/threejs/wiki-xl/reference/math-api.md) — Pro
- [Objects — Full API Reference](/raw/threejs/wiki-xl/reference/objects-api.md) — Pro
- [Post-Processing — Full API Reference](/raw/threejs/wiki-xl/reference/post-processing-api.md) — Pro
- [Renderer — Full API Reference](/raw/threejs/wiki-xl/reference/renderer-api.md) — Pro
- [Shaders & Custom Materials — Full API Reference](/raw/threejs/wiki-xl/reference/shaders-and-custom-materials.md) — Pro
- [Textures — Full API Reference](/raw/threejs/wiki-xl/reference/textures-api.md) — Pro