Introduction to Lighting and Rendering

Checked with version: 5

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Difficulty: Beginner

Modern game lighting makes extensive use of ‘global illumination’.

Global illumination, or ‘GI’, is a term used to describe a range of techniques and mathematical models which attempt to simulate the complex behaviour of light as it bounces and interacts with the world. Simulating global illumination accurately is challenging and can be computationally expensive. Because of this, games use a range of approaches to handle these calculations beforehand, rather than during gameplay.

Lighting Introduction The same scene: With no lighting (Left), with ‘direct light’ only (Center) & with indirect 'global illumination' (Right). Note how colors are transferred as light ‘bounces’ between surfaces, giving a much more realistic result.

In this document we will give you an overview of how GI works in Unity. We will walk you through the different lighting techniques available, explain how to setup your project for lighting and then explore the various tools at your disposal when considering how to light a scene.

Unity For Artists

  1. Lighting Overview
  2. Lights
  3. Materials
  4. The Standard Shader
  5. Textures
  6. Using Skyboxes
  7. A Gentle Introduction to Shaders
  8. Using detail textures for extra realism close-up
  9. Frame Debugger
  1. Introduction to Lighting and Rendering
  2. Choosing a Lighting Technique
  3. The Precompute Process
  4. Choosing a Rendering Path
  5. Choosing a Color Space
  6. High Dynamic Range (HDR)
  7. Reflections
  8. Ambient Lighting
  9. Light Types
  10. Emissive Materials
  11. Light Probes
  1. Introduction to Precomputed Realtime GI
  2. Realtime Resolution
  3. Understanding Charts
  4. Starting the precompute process
  5. Probe lighting
  6. Unwrapping and Chart reduction
  7. Optimizing Unity's auto unwrapping
  8. Understanding Clusters
  9. Fine tuning with Lightmap Parameters
  10. Summary - Precomputed Realtime GI
  1. The Particle System
  2. Adding Lighting To Particles
  3. Adding Movement To Particles With Noise
  4. Fun with Explosions!
  5. Cinematic Explosions - PIT
  1. Intro to Timeline and Cinemachine Tutorial (including Dolly Track)
  2. Intro to Timeline [ by Brackeys ]
  3. Intro to Cinemachine [ by Brackeys ]
  4. Cinemachine Clear Shot Camera Tutorial
  5. Using Timeline: Getting Started
  6. Using Timeline: Understanding Tracks
  7. Using Timeline: Working with Animation Clips
  1. Materials
  2. Emissive Materials
  3. How to remove lighting from Photogrammetry with the De-lighting tool
  1. Introduction to Art & Design Essentials
  2. Uber Standard Shader Real Time Snow Effect
  3. Building Levels With Octave3D
  4. Volumetric Fog with Fog Volume 3
  5. Questions and Answers for Art & Design Essentials
  1. Overview and Goals
  2. Best Practices
  3. Mesh Normal Calculation
  4. DCC Tool Light Import
  5. DCC Tool Camera Import
  6. Importing Visibility Animation
  7. Animation Keyframing Improvements
  8. Stingray PBS Materials
  9. FBX Material Embedding
  10. Questions and Answers