Lighting - Overview

Light Modes and Types

Lighting for Static Objects

Light Probes

Shadows

Demo: Baked Lighting

Lighting is one of the most important aspects of real-time 3D visuals. It can set the mood, guide interactions, and identify goals and objectives. In this project, you will learn about and compare the differences between the available lights and light modes that you can use in your 3D mobile application.

Lighting

Course Introduction

The Optimization Process

Profiling Tools

Geometry - Introduction 

Triangle and Polygon Usage

Level of Detail

Additional Geometry Best Practices

Demo: Level of Detail

Textures - Introduction

Texture Size, Color Space, and Compression

Texture Atlases

Texture Filtering

Mipmapping

UV Unwrap, Visual Impact, and Texture Channel Packing

Alpha Channels and Normal Map Best Practices

Editing Texture Settings

Demo: Texture Atlases

Shaders and Materials - Overview

Optimizing Shaders for Mobile Platforms

Transparencies

Additional Material and Shader Best Practices

Demo: Draw Calls and SRP Batcher

Conclusion/Next Steps

Welcome to 3D Art Optimization for Mobile Applications! In this introductory project, we will review the course's main learning objectives, discuss the practice of optimization, and identify the optimization tools available at your disposal.

Introduction/Optimization and Profiling

This project will highlight optimizations for 3D models that can make a game more efficient while maintaining aesthetic intent, improving the performance and experience on mobile devices. 

Geometry

This project will highlight the different implementation considerations and optimizations that take advantage of a Texture’s flexibility. When given the correct settings and applied correctly over their many use cases, Textures play a major role in achieving your desired visual effects. 

Textures

Shaders and Materials play a crucial role in determining how target hardware will process and render your 3D objects. In this project, you will explore best practices that will keep the shaders lightweight and fast when running on phones with limited resources.

Shaders and Materials

ARMUnityMobileOptimization.zip

In this intermediate course, participants will learn how to produce performance-optimized 3D assets and scenes for mobile applications. Topics will cover tips on optimizing Geometry, Textures, Materials, Shaders, and Lighting. This course was created with technical artists and content creators in mind.

Arm & Unity Presents: 3D Art Optimization for Mobile Applications

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Light Probe Use Cases

Conclusion

In this tutorial, we discuss the best use cases for light probes in your 3D mobile application.

The primary use is to provide high-quality lighting (including indirect bounced light) on moving objects in your Scene.

The secondary use is to provide lighting information for static scenery when that scenery is using Unity's Level of Detail (LOD) system.

Light Probes have many of the same benefits as lightmaps in that they store lighting data that can be calculated before running your game. While a lightmap encodes lighting received at a given texel for surfaces in your Scene, a Light Probe stores the light that passes through empty space. This data can then be used to light dynamic objects, helping to integrate them visually with the lightmapped objects throughout your Scene.

Light Probes only store information on the lights and shadows of the static Scene. This is because Light Probes are pre-baked. They are not a solution for creating light from dynamic objects, real-time lights, or self-shadowing. Still, light probes can provide most of the lighting for your Scene

The following screenshot shows an example of Light Probes being used.

You can learn more about implementing Light Probes in your Scene in the Unity documentation.

Light Probes are a simple way to capture the lighting of your static Scene and apply the data to moving objects at runtime at a lower cost than real-time Global Illumination. In the next tutorial, we’ll discuss the best practices for rendering shadows in 3D mobile applications.

Light Probes

1. Light Probe Use Cases

2. Conclusion

Complete this tutorial