# Light Models

The All In 1 3D Shader offers a completely personalizable lighting system that can be mixed and matched to fit your specific project needs. Unlike traditional shaders that restrict you to a single lighting approach, this system provides the flexibility to combine different lighting components for your desired visual style.

**Light Model options:**

* Classic: Standard lighting calculation suitable for most scenarios
* Toon: Creates stylized cel-shaded look with hard edges between light and shadow
* ToonRamp: Uses gradient texture for more control over shading steps
* HalfLambert: Softer lighting that wraps around objects more than classic model
* FakeGI: Simulates global illumination by brightening shadowed areas
* FastLighting: Explained over [Fast Lighting](/seaside-studios/3d-shader/fast-lighting.md)

**Shading Model options:**

* Basic: Simpler lighting calculations for standard scenarios
* PBR: Physically Based Rendering for realistic material simulation with properties like:
  * Metallic: Controls how metal-like surfaces appear (0-1)
  * Smoothness: Determines reflection sharpness and microsurface detail

**Specular Model options:**

* Classic: Traditional Blinn-Phong specular model
* Toon: Hard-edged highlights for cartoon styles
* Anisotropic: Stretched highlights following a direction (great for hair, brushed metals)
* AnisotropicToon: Combines anisotropic highlights with toon-style hard edges

Additional features include Reflection systems for environmental reflections, Normal Mapping for surface detail, and customizable Shadow options. The real power comes from mixing these different components - for example, pairing a Toon Light Model with PBR Shading for a unique stylized look, or combining Classic lighting with Anisotropic specular for realistic materials like hair or fabric.

<figure><img src="/files/K8FxMYe7WasjSmr9DVGC" alt=""><figcaption></figcaption></figure>


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