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3D Graphics Rendering Cookbook

You're reading from 3D Graphics Rendering Cookbook A comprehensive guide to exploring rendering algorithms in modern OpenGL and Vulkan

Product type Paperback

Published in Aug 2021

Publisher Packt

ISBN-13 9781838986193

Length 670 pages

Edition 1st Edition

Languages

C++

Tools

DirectX

Concepts

Graphics Programming

Authors (2):

Viktor Latypov

Sergey Kosarevsky

View More author details

Table of Contents (12) Chapters

Preface

1. Chapter 1: Establishing a Build Environment

2. Chapter 2: Using Essential Libraries FREE CHAPTER

3. Chapter 3: Getting Started with OpenGL and Vulkan

4. Chapter 4: Adding User Interaction and Productivity Tools

5. Chapter 5: Working with Geometry Data

6. Chapter 6: Physically Based Rendering Using the glTF2 Shading Model

7. Chapter 7: Graphics Rendering Pipeline

8. Chapter 8: Image-Based Techniques

9. Chapter 9: Working with Scene Graphs

10. Chapter 10: Advanced Rendering Techniques and Optimizations

11. Other Books You May Enjoy

Precomputing irradiance maps and diffuse convolution

The second part of the split sum approximation necessary to calculate the glTF2 physically based shading model comes from the irradiance cube map, which is precalculated by convolving the input environment cube map with the GGX distribution of our shading model.

Getting ready

Check out the source code for this recipe in Chapter6/Util01_FilterEnvmap. If you want to dive deep into the math theory behind these computations, make sure you read Brian Karis's paper at https://cdn2.unrealengine.com/Resources/files/2013SiggraphPresentationsNotes-26915738.pdf.

How to do it...

This code is written for simplicity rather than for speed or precision, so it does not use importance sampling and convolves the input cube map using simple Monte Carlo integration and the Hammersley sequence to generate uniformly distributed 2D points on an equirectangular projection of our input cube map.

The source code can be found in the Chapter6...

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Authors (2)

Sergey Kosarevsky

Sergey Kosarevsky

Sergey Kosarevsky is a former rendering lead at Ubisoft RedLynx. He currently leads Vulkan development at Meta. He worked in the AR/VR and mobile industries at DAQRI, TWNKLS, Blippar, Layer, Yandex, and SPB Software, where he designed and implemented custom real-time rendering technology. He has more than 20 years of software development experience and more than 14 years of mobile and embedded 3D graphics experience. In his Ph.D. thesis, Sergey employed computer vision to solve mechanical engineering problems. He has co-authored several books on mobile software development in C++.

See other products by Sergey Kosarevsky

Viktor Latypov

Viktor Latypov

Viktor Latypov is a software engineer and mathematician with experience in compiler development, device drivers, robotics, and high-performance computing and with a personal interest in 3D graphics and mobile technology. Surrounded by computers for more than 20 years, he enjoys every bit of developing and designing software for anything with a CPU inside. Viktor holds a PhD in applied mathematics from Saint-Petersburg State University.

See other products by Viktor Latypov

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