Overview

Physically based rendering (PBR) shaders for Unity derived from Filament shaders. More beautiful and accurate rendering than Unity Standard shaders.

Feature

• Basic Filament Features
  • Albedo
  • Metallic
  • Smoothness
  • Ambient Occlusion
    • Multi Bounce AO
    • Specular AO
  • Reflectance (instead of IoR)
  • Normal
  • Bent Normal
  • Emission
  • Anisotropy (tangent map)
  • Sheen
  • Clear Coat
  • Refraction
    • Thin
    • Solid sphere
    • Using Reflection Probe
    • Main texture alpha channel is used as Transmission
  • Subsurface Model
    • No Sheen and Refraction
  • Cloth Model
    • No Metallic, Reflectance, Sheen and Refraction
  • Directional Light
  • Additional Light
  • Micro Shadowing
  • Specular AA
• Unity's standard rendering features
  • Blend Mode
    • Alpha Clipping
      • Alpha to coverage
    • Transparent
    • Fade
    • Additive
    • Multiply
  • Culling Mode
  • Decal Mode
  • Detail Map
    • Choice of UV0~UV3
  • Vertex Color
    • Vertex Color Alpha is used as Detail Mask
  • Vertex Light
  • Ambient Light
  • Reflection Probe
    • Box Projection
    • Blend
  • Light Map
  • Directional Map
  • Receive Shadow
  • Cast Shadow
  • Meta Pass
  • GPU Instancing
• Special Features
  • Parallax Map
    • More accurate unique method by sampling twice
    • or Parallax Occlusion mode
  • Light Source Estimation from Spherical Harmonics
  • Accurate Fog
  • Tri Planar Sampling
  • No Tiling Sampling
  • Height Map Shadow
  • Tree Shader for "Tree It"
• Experimental Features
  • Capsule AO / Capsule Shadow
    • A dedicated script is required
  • Cylinder Projection of Reflection / Additive box Projection of Reflection
    • Only if using box projection
  • Skybox Fog
  • Using vertex light as pixel light
  • Specular AO
  • Support for LTCGI
  • Support for VRC Light Volumes

Map Channel

Basically same as Unity HDRP mapping

Albedo

Channel	Map
RGB	Albedo (Color)
A	Opacity

Mask Map

Channel	Map
R	Metallic
G	Occlusion
B	Detail Mask
A	Smoothness

Detail Map

Channel	Map
R	Desaturated albedo
G	Normal Y
B	Smoothness
A	Normal X

Height Map

Gene Lit Shaders provides more accurate parallax than Standard Shader by sampling a height map twice.

A height map and a directional light can be used to create a pseudo-shadow effect.(Height Map Shadow)

Notice

Filament code is included under the Apache license.Copyright (C) 2020 Google, Inc.