---
title: "Lighting optimization with Precomputed Realtime GI"
content_type: course
url: "https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi?language=en"
language: en
difficulty: intermediate
duration_minutes: 210
unity_version:
  - "2019.4"
supported_unity_versions:
  - name: "2019.4"
    url: "https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi.md?language=en&version=2019.4"
last_updated: "2026-08-04T14:20:49.000Z"
---

# Lighting optimization with Precomputed Realtime GI

This project will guide you through lighting optimization with Precomputed Realtime GI for Unity 2019.4 LTS. You’ll practice optimization workflows and review model examples to explore the benefits optimization offers your own projects.

## Contents

- [Introduction to the project](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/introduction-to-the-project?language=en&version=2019.4) ([md](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/introduction-to-the-project.md?language=en&version=2019.4)) — Review the learning goals and open the provided Unity project in the Editor to prepare for the experience.
- [Set up your scene](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/set-up-your-scene?language=en&version=2019.4) ([md](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/set-up-your-scene.md?language=en&version=2019.4)) — Set up your scene lighting with Precomputed Realtime Global Illumination and begin the precompute process.
- [Place light probes](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/create-and-place-light-probes?language=en&version=2019.4) ([md](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/create-and-place-light-probes.md?language=en&version=2019.4)) — Learn to configure probe lighting to better illuminate small objects and reduce precompute times.
- [Optimize realtime lightmaps](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/optimize-unwrapping-for-chart-reduction?language=en&version=2019.4) ([md](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/optimize-unwrapping-for-chart-reduction.md?language=en&version=2019.4)) — Learn to refine auto-unwrapped UV layouts generated by Unity’s Precomputed Realtime GI for better lighting results.
- [Fine-tune your Lightmap Parameters](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/fine-tune-your-lightmap-parameters?language=en&version=2019.4) ([md](https://learn.unity.com/course/lighting-optimization-with-precomputed-realtime-gi/tutorial/fine-tune-your-lightmap-parameters.md?language=en&version=2019.4)) — Learn how Clusters and Lightmap Parameters work together to generate and fine-tune global illumination per object.