OpenGL.Shading.Language.2nd.Edition.(Orange.Book).2006.pdf

OpenGL® Shading Language, Second Edition

By Randi J. Rost

...............................................

Publisher: Addison Wesley Professional

Pub Date: January 25, 2006

Print ISBN-10: 0-321-33489-2

Print ISBN-13: 978-0-321-33489-3

Pages: 800

Table of Contents | Index

"As the 'Red Book' is known to be the gold standard for OpenGL, the 'Orange Book' is

considered to be the gold standard for the OpenGL Shading Language. With Randi's extensive

knowledge of OpenGL and GLSL, you can be assured you will be learning from a graphics

industry veteran. Within the pages of the second edition you can find topics from beginning

shader development to advanced topics such as the spherical harmonic lighting model and

more."

David Tommeraasen, CEO/Programmer, Plasma Software

"This will be the definitive guide for OpenGL shaders; no other book goes into this detail. Rost

has done an excellent job at setting the stage for shader development, what the purpose is,

how to do it, and how it all fits together. The book includes great examples and details, and

good additional coverage of 2.0 changes!"

Jeffery Galinovsky, Director of Emerging Market Platform Development, Intel Corporation

"The coverage in this new edition of the book is pitched just right to help many new shader-

writers get started, but with enough deep information for the 'old hands.'"

Marc Olano, Assistant Professor, University of Maryland

"This is a really great book on GLSLwell written and organized, very accessible, and with good

real-world examples and sample code. The topics flow naturally and easily, explanatory code

fragments are inserted in very logical places to illustrate concepts, and all in all, this book

makes an excellent tutorial as well as a reference."

John Carey, Chief Technology Officer, C.O.R.E. Feature Animation

OpenGL® Shading Language, Second Edition , extensively updated for OpenGL 2.0, is the

experienced application programmer's guide to writing shaders. Part reference, part tutorial,

this book thoroughly explains the shift from fixed-functionality graphics hardware to the new

era of programmable graphics hardware and the additions to the OpenGL API that support this

programmability. With OpenGL and shaders written in the OpenGL Shading Language,

applications can perform better, achieving stunning graphics effects by using the capabilities

of both the visual processing unit and the central processing unit.

In this book, you will find a detailed introduction to the OpenGL Shading Language (GLSL) and

the new OpenGL function calls that support it. The text begins by describing the syntax and

semantics of this high-level programming language. Once this foundation has been

established, the book explores the creation and manipulation of shaders using new OpenGL

function calls.

OpenGL® Shading Language, Second Edition , includes updated descriptions for the

language and all the GLSL entry points added to OpenGL 2.0; new chapters that discuss

lighting, shadows, and surface characteristics; and an under-the-hood look at the

implementation of RealWorldz, the most ambitious GLSL application to date. The second

edition also features 18 extensive new examples of shaders and their underlying algorithms,

including

z Image-based lighting

z Lighting with spherical harmonics

z Ambient occlusion

z Shadow mapping

z Volume shadows using deferred lighting

z Ward's BRDF model

The color plate section illustrates the power and sophistication of the OpenGL Shading

Language. The API Function Reference at the end of the book is an excellent guide to the API

entry points that support the OpenGL Shading Language. Also included is a convenient Quick

Reference Card to GLSL.

OpenGL® Shading Language, Second Edition

By Randi J. Rost

...............................................

Publisher: Addison Wesley Professional

Pub Date: January 25, 2006

Print ISBN-10: 0-321-33489-2

Print ISBN-13: 978-0-321-33489-3

Pages: 800

Table of Contents | Index

Praise for OpenGL® Shading Language, Second Edition

Praise for the First Edition of OpenGL® Shading Language

Foreword

Foreword to the First Edition

Preface

Intended Audience

About This Book

About the Shader Examples

Errata

Typographical Conventions

About the Author

About the Contributors

Acknowledgments

Chapter 1. Review of OpenGL Basics

Section 1.1. OpenGL History

Section 1.2. OpenGL Evolution

Section 1.3. Execution Model

Section 1.4. The Frame Buffer

Section 1.5. State

Section 1.6. Processing Pipeline

Section 1.7. Drawing Geometry

Section 1.8. Drawing Images

Section 1.9. Coordinate Transforms

Section 1.10. Texturing

Section 1.11. Summary

Section 1.12. Further Information

Chapter 2. Basics

Section 2.1. Introduction to the OpenGL Shading Language

Section 2.2. Why Write Shaders?

Section 2.3. OpenGL Programmable Processors

Section 2.4. Language Overview

Section 2.5. System Overview

Section 2.6. Key Benefits

Section 2.7. Summary

Section 2.8. Further Information

Chapter 3. Language Definition

Section 3.1. Example Shader Pair

Section 3.2. Data Types

Section 3.3. Initializers and Constructors

Section 3.4. Type Conversions

Section 3.5. Qualifiers and Interface to a Shader

Section 3.6. Flow Control

Section 3.7. Operations

Section 3.8. Preprocessor

Section 3.9. Preprocessor Expressions

Section 3.10. Error Handling

Section 3.11. Summary

Section 3.12. Further Information

Chapter 4. The OpenGL Programmable Pipeline

Section 4.1. The Vertex Processor

Section 4.2. The Fragment Processor

Section 4.3. Built-in Uniform Variables

Section 4.4. Built-in Constants

Section 4.5. Interaction with OpenGL Fixed Functionality

Section 4.6. Summary

Section 4.7. Further Information

Chapter 5. Built-in Functions

Section 5.1. Angle and Trigonometry Functions

Section 5.2. Exponential Functions

Section 5.3. Common Functions

Section 5.4. Geometric Functions

Section 5.5. Matrix Functions

Section 5.6. Vector Relational Functions

Section 5.7. Texture Access Functions

Section 5.8. Fragment Processing Functions

Section 5.9. Noise Functions

Section 5.10. Summary

Section 5.11. Further Information

Chapter 6. Simple Shading Example

Section 6.1. Brick Shader Overview

Section 6.2. Vertex Shader

Section 6.3. Fragment Shader

Section 6.4. Observations

Section 6.5. Summary

Section 6.6. Further Information

Chapter 7. OpenGL Shading Language API

Section 7.1. Obtaining Version Information

Section 7.2. Creating Shader Objects

Section 7.3. Compiling Shader Objects

Section 7.4. Linking and Using Shaders

Section 7.5. Cleaning Up

Section 7.6. Query Functions

Section 7.7. Specifying Vertex Attributes

Section 7.8. Specifying Uniform Variables

Section 7.9. Samplers

Section 7.10. Multiple Render Targets

Section 7.11. Development Aids

Section 7.12. Implementation-Dependent API Values

Section 7.13. Application Code for Brick Shaders

Section 7.14. Summary

Section 7.15. Further Information

Chapter 8. Shader Development

Section 8.1. General Principles

Section 8.2. Performance Considerations

Section 8.3. Shader Debugging

Section 8.4. Shader Development Tools

Section 8.5. Scene Graphs

Section 8.6. Summary

Section 8.7. Further Information

Chapter 9. Emulating OpenGL Fixed Functionality

Section 9.1. Transformation

Section 9.2. Light Sources

Section 9.3. Material Properties and Lighting

Section 9.4. Two-Sided Lighting

Section 9.5. No Lighting

Section 9.6. Fog

Section 9.7. Texture Coordinate Generation

Section 9.8. User Clipping

Section 9.9. Texture Application

Section 9.10. Summary

Section 9.11. Further Information

Chapter 10. Stored Texture Shaders

Section 10.1. Access to Texture Maps from a Shader

Section 10.2. Simple Texturing Example

Section 10.3. Multitexturing Example

Section 10.4. Cube Mapping Example

Section 10.5. Another Environment Mapping Example

Section 10.6. Glyph Bombing

Section 10.7. Summary

Section 10.8. Further Information

Chapter 11. Procedural Texture Shaders

Section 11.1. Regular Patterns

Section 11.2. Toy Ball

Section 11.3. Lattice

Section 11.4. Bump Mapping

Section 11.5. Summary

Section 11.6. Further Information

Chapter 12. Lighting

Section 12.1. Hemisphere Lighting

Section 12.2. Image-Based Lighting

Section 12.3. Lighting with Spherical Harmonics

Section 12.4. The ÜberLight Shader

Section 12.5. Summary

Section 12.6. Further Information

Chapter 13. Shadows

Section 13.1. Ambient Occlusion

Section 13.2. Shadow Maps

Section 13.3. Deferred Shading for Volume Shadows

Section 13.4. Summary

Section 13.5. Further Information

Chapter 14. Surface Characteristics

Section 14.1. Refraction

Section 14.2. Diffraction

Section 14.3. BRDF Models

Section 14.4. Polynomial Texture Mapping with BRDF Data

Section 14.5. Summary

Section 14.6. Further Information

Chapter 15. Noise

Section 15.1. Noise Defined

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