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Unity 2021 Shaders and Effects Cookbook

You're reading from   Unity 2021 Shaders and Effects Cookbook Over 50 recipes to help you transform your game into a visually stunning masterpiece

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Product type Paperback
Published in Oct 2021
Publisher Packt
ISBN-13 9781839218620
Length 484 pages
Edition 4th Edition
Languages
Tools
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Author (1):
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John P. Doran John P. Doran
Author Profile Icon John P. Doran
John P. Doran
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Toc

Table of Contents (16) Chapters Close

Preface 1. Chapter 1: Post Processing Stack 2. Chapter 2: Creating Your First Shader FREE CHAPTER 3. Chapter 3: Working with Surface Shaders 4. Chapter 4: Working with Texture Mapping 5. Chapter 5: Understanding Lighting Models 6. Chapter 6: Physically Based Rendering 7. Chapter 7: Vertex Functions 8. Chapter 8: Fragment Shaders and Grab Passes 9. Chapter 9: Mobile Shader Adjustment 10. Chapter 10: Screen Effects with Unity Render Textures 11. Chapter 11: Gameplay and Screen Effects 12. Chapter 12: Advanced Shading Techniques 13. Chapter 13: Shader Graph – 2D 14. Chapter 14: Shader Graph – 3D 15. Other Books You May Enjoy

Creating mirrors and reflective surfaces

Specular materials reflect light when objects are viewed from certain angles. Unfortunately, even the Fresnel reflection, which is one of the most accurate models, does not reflect light from nearby objects correctly. The lighting models we examined in the previous chapters only took light sources into account; they ignored light that is reflected from other surfaces. With what you've learned about shaders so far, making a mirror is simply not possible.

GI makes this possible by providing PBR shaders with information about their surroundings. This allows objects to have not just specular highlights, but also real reflections, which depend on the other objects around them. Real-time reflections are very costly and must be set up and tweaked to work. When done properly, they can be used to create mirror-like surfaces, as shown in the following screenshot:

Figure 6.12 – Mirror-like reflection

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