unity urp toonshading shaders shader shading toon cel-shading

Toon Shader for Unity URP

A toon shader compatible with the Universal Render Pipeline.

⚠️ The repository is no longer actively maintained.

🆕 The techniques from this project are the foundation of Toon RP, a custom Scripable Render Pipeline designed for stylized rendering.

Unity Version

Developed and verified with Unity 2021.3.0f1 LTS and URP package v12.1.6.

Toon Shader Capabilities

Surface

Opaque/Transparent with blending modes:
- Alpha/Premultiply/Additive/Multiply
Alpha Clipping
Culling
- Back/Front/Off

Color

2 or 3-step ramp with configurable thresholds and smoothness
Ramp textures
Normal Maps
Main light
Additional lights
- per-vertex or per-pixel, depending on URP settings
- optional specular highlights
- shadows
Casting and receiving shadows
Configurable shadow color (both in multiplicative and "pure" modes)
Emission
Rim lighting (Fresnel effect) and specular highlights with HDR color support (e.g. for bloom)
Anisotropic specular (e.g. for hair)
Environment reflections and Reflection Probes
Fog
SSAO
Environment Lighting
Baked lights and shadows
- Dynamically receive via light probes
- Contribute to bake process ("meta" pass)
Vertex Color
Screen-Space Shadows

Performance

SRP Batcher compatibility
GPU Instancing

Only Forward rendering path is supported.

Toon Shader (Lite) Capabilities

Color

2-step ramp with configurable threshold and smoothness
Main light (per-vertex or per-pixel)
Casting shadows
Configurable shadow color
Fog
Vertex Color

Performance

SRP Batcher compatibility
GPU Instancing

Only Forward rendering path is supported.

Inverted Hull Outline

A simple and performant outline shader. Renders outlines of objects on certain layers via a Renderer Feature.

See the Outline Wiki page for details.

Installation

For the latest version (Unity compatibility is specified here):

Option 1

Open Package Manager through Window/Package Manager
Click "+" and choose "Add package from git URL..."
Insert the URL:

https://github.com/Delt06/urp-toon-shader.git?path=Packages/com.deltation.toon-shader

Option 2

Add the following line to Packages/manifest.json:

"com.deltation.toon-shader": "https://github.com/Delt06/urp-toon-shader.git?path=Packages/com.deltation.toon-shader",

Specific Unity Version

If you want to explicitly specify a Unity version, you should use a URL of the following form:

https://github.com/Delt06/urp-toon-shader.git?path=Packages/com.deltation.toon-shader#<UNITY-VERSION>

where <UNITY-VERSION> may be either of the following:

2021.3
2020.3

By default, the shader is updated only for LTS versions of Unity.

Getting Started

Ensure URP is installed (see the official instructions).
Create a new material, select DELTation/Toon Shader in the shader menu.
For more details on the shader parameters, see the Forest Demo Breakdown Wiki page.