Graphics Shaders: Theory and Practice, Second Edition, 2nd Edition (Hardback) book cover

Graphics Shaders

Theory and Practice, Second Edition, 2nd Edition

By Mike Bailey, Steve Cunningham

A K Peters/CRC Press

518 pages

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pub: 2011-11-08
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Description

Graphics Shaders: Theory and Practice is intended for a second course in computer graphics at the undergraduate or graduate level, introducing shader programming in general, but focusing on the GLSL shading language. While teaching how to write programmable shaders, the authors also teach and reinforce the fundamentals of computer graphics. The second edition has been updated to incorporate changes in the OpenGL API (OpenGL 4.x and GLSL 4.x0) and also has a chapter on the new tessellation shaders, including many practical examples.

The book starts with a quick review of the graphics pipeline, emphasizing features that are rarely taught in introductory courses, but are immediately exposed in shader work. It then covers shader-specific theory for vertex, tessellation, geometry, and fragment shaders using the GLSL 4.x0 shading language. The text also introduces the freely available glman tool that enables you to develop, test, and tune shaders separately from the applications that will use them. The authors explore how shaders can be used to support a wide variety of applications and present examples of shaders in 3D geometry, scientific visualization, geometry morphing, algorithmic art, and more.

Features of the Second Edition:

  • Written using the most recent specification releases (OpenGL 4.x and GLSL 4.x0) including code examples brought up-to-date with the current standard of the GLSL language.
  • More examples and more exercises
  • A chapter on tessellation shaders
  • An expanded Serious Fun chapter with examples that illustrate using shaders to produce fun effects
  • A discussion of how to handle the major changes occurring in the OpenGL standard, and some C++ classes to help you manage that transition

The authors thoroughly explain the concepts, use sample code to describe details of the concepts, and then challenge you to extend the examples. They provide sample source code for many of the book’s examples at www.cgeducation.org

Reviews

"If you are one of the multitudes of OpenGL programmers wondering about how to get started with programmable shaders or what they are good for, this is the book for you. Mike and Steve have filled their new edition with such a variety of interesting examples that you'll be running to your computer to begin writing your own shaders."

Ed Angel, Chair, Board of Directors, Santa Fe Complex, Founding Director, Art, Research, Technology and Science Laboratory (ARTS Lab), Professor Emeritus of Computer Science, University of New Mexico

"Shaders are an essential tool in today’s computer graphics, from films and games to science and industry. In this excellent book, Bailey and Cunningham not only clearly explain the how and why of shaders, but they provide a wealth of cutting-edge shaders and development tools. If you want to learn about shaders, this is the place to start!"

—Andrew Glassner

Praise for the First Edition:

"Bailey and Cunningham provide a comprehensive, well-written overview of graphics shaders. … Although the book uses the OpenGL Shading Language (GLSL) for its examples, it gives enough theoretical background for readers to learn the fundamentals for any graphics language. … The book also addresses scientific visualization and the GLSL API to call GLSL functions from an OpenGL program. A final chapter offers ideas for using shaders in very entertaining ways. … Highly recommended."

—C. Tappert, CHOICE, December 2009

"… a pick for any college-level, advanced computer library catering to programming professionals. … discusses different types of shaders, how to use the glman program for free, and how to blend shaders into an interactive game environment. Libraries will find it a powerful, appealing lend for intermediate programmers seeking extra spice for their projects."

Midwest Book Review, August 2009

Table of Contents

The Fixed-Function Graphics Pipeline

The Traditional View

How the Traditional View Is Implemented

Vertex Arrays

Conclusions

OpenGL Shader Evolution

History of Shaders

OpenGL Shader History

OpenGL ES

How Can You Respond to These Changes?

Our Approach in This Book

Fundamental Shader Concepts

Shaders in the Graphics Pipeline

The GLSL Shading Language

Passing Data from Your Application into Shaders

Using glman

Using glman

GLIB Scene Creation

More on Textures and Noise

Functions in the glman Interface Window

The GLSL Shader Language

Factors that Shape Shader Languages

General GLSL Language Concepts

Language Details

Compatibility Mode

Summary

Lighting

The ADS Lighting Model

Types of Lights

Setting Up Lighting for Shading

Vertex Shaders

Vertex Shaders in the Graphics Pipeline

Replacing Fixed-Function Graphics with Vertex Shaders

Going beyond the Fixed-Function Pipeline with Vertex Shaders

Vertex Modification

Issues in Vertex Shaders

Summary

Fragment Shaders and Surface Appearance

Basic Function of a Fragment Shader

Fragment Shader Processing

Replacing Fixed-Function Processing with Fragment Shaders

What Follows a Fragment Shader?

Additional Shader Effects

Surface Textures in the Fragment Shader

Texture Coordinates

Traditional Texture Mapping

GLSL Texture Mapping

Render to Texture

Render to Texture for Multipass Rendering in glman

Noise

Fundamental Noise Concepts

Other Noise Concepts

Some Examples of Noise in Different Environments

Advanced Noise Topics

Using Noisegraph

Image Manipulation with Shaders

Basic Concepts

Single-Image Manipulation

The Image Blending Process

Blending an Image with a Constant Base Image

Blending an Image with a Version of Itself

Blending Two Different Images

Notes

Geometry Shader Concepts and Examples

What Does the Geometry Shader Do?

Normals in Geometry Shaders

Examples

Tessellation Shaders

What Are Tessellation Shaders?

Tessellation Shader Concepts

Examples

Summary

The GLSL API

Shaders in the OpenGL Programming Process

How Is a GLSL Shader Program Created?

Creating and Compiling Shader Objects

Creating, Attaching, Linking, and Activating Shader Programs

Passing Data into Shaders

Using Shaders for Scientific Visualization

Image-Based Visualization Techniques

Hyperbolic Geometry

3D Scalar Data Visualization

More on Transfer Functions

Passing in Data Values with Your Geometry

Terrain Bump-Mapping

Flow Visualization

Geometry Visualization

Serious Fun

Light Interference

Lens Effects

Bathroom Glass

Atmospheric Effects

Fun with One

Using the glman Timer Function

Disco Ball

Fog, with and without Noise

Morphing 3D Geometry

Algorithmic Art

Making Information Visible through Motion

An Explosion Shader

Appendices

References

Index

Exercises appear at the end of each chapter.

About the Authors

Mike Bailey is a professor of computer science at Oregon State University. Dr. Bailey is a member of ACM, SIGGRAPH, IEEE, ASME. He earned a Ph.D. in computer graphics and computer aided design from Purdue University. His areas of interest include scientific visualization, high performance computer graphics, GPU programming, solid freeform fabrication, geometric modeling, and computer aided design and analysis.

Steve Cunningham is a professor emeritus of computer science at California State University Stanislaus. A member of ACM SIGGRAPH, ACM SIGCSE, and Eurographics, he has been actively engaged in computer graphics education for many years.

Subject Categories

BISAC Subject Codes/Headings:
COM012000
COMPUTERS / Computer Graphics
COM012040
COMPUTERS / Programming / Games