Learning OpenGL ES for iOS A Hands-on Guide to Modern 3D Graphics Programming

by Buck, Erik

• ISBN13: 9780321741837
• ISBN10: 0321741838
• Edition: 1st
• Format: Paperback
• Copyright: 2012-07-27
• Publisher: Addison-Wesley Professional

Summary

OpenGL ES is a foundation technology that underlies the amazing media exhibited by iPhone applications, but its inherent cross-platform capabilities extend its appeal to game authors, scientists, and multimedia authors regardless of their chosen development platform. The hardest part of learning OpenGL today is finding information and examples that are pertinenttoday. You have to filter out all of the background clutter found in the OpenGL standard, which includes obsolete code, suboptimal approaches, and anachronistic practices that have built up over 20 years of rapidly shifting graphics hardware technology and at least 12 different versions of the standard. Learning OpenGL for iOSwill provide a gentle introduction to graphics technology and serves as a no-nonsense, practical starting point for readers. All of the modern uses of OpenGL are discussed, while the book also avoids distracting readers with obsolete or irrelevant parts of the standard. OpenGL ES is clearly the future of cross-platform graphics technology, and it will continue to be used in all of the modern phones and game consoles for years to come. This book will: Help readers understand the capabilities and limitations of modern embedded graphics hardware for mobile platforms Instruct readers on how to initialize and control graphics hardware, step by step Explain texture definition and texture mapping onto 3D geometry Show multiple techniques and optimizations for lighting through examples Introduce the algorithms used by the graphics hardware to project images of 3D objects on 2D displays And much much more!

Author Biography

Erik M. Buck a serial entrepreneur and author, co-wrote Cocoa Programming and Cocoa Design Patterns. He founded his first company, EMB and Associates, Inc., in 1993 and built it into a leader in the aerospace and entertainment software industries. He has also worked in construction, taught science to 8th graders, exhibited oil on canvas portraits, and developed alternative fuel vehicles. His latest startup venture is www.cosmicthump.com. Also an Adjunct Professor of Computer Science at Wright State University, he currently teaches iOS programming.

Table of Contents

Preface	p. x
Using Modern Mobile Graphics Hardware	p. 1
What Is 3D Rendering?	p. 2
Supplying the Graphics Processor with Data	p. 4
The OpenGL ES Context	p. 9
The Geometry of a 3D Scene	p. 9
Summary	p. 17
Making the Hardware Work for You	p. 19
Drawing a Core Animation Layer with OpenGL ES	p. 19
Combining Cocoa Touch with OpenGL ES	p. 22
The OpenGLES_Ch2_l Example	p. 27
Deep Dive: How Does GLKView Work?	p. 42
Extrapolating from GLKit	p. 51
Summary	p. 58
Textures	p. 59
What Is a Texture?	p. 59
The OpenGLES_Ch3_l Example	p. 65
Deep Dive: How Does GLKTextureLoader Work?	p. 69
The 0penGLES_Ch3_3 Example	p. 76
Opacity, Blending, and Multi-Texturing	p. 77
Texture Compression	p. 84
Summary	p. 85
Shedding Some Light	p. 87
Ambient, Diffuse, and Specular Light	p. 88
Calculating How Much Light Hits Each Triangle	p. 90
Using GLKit Lighting	p. 95
The OpenGLES_Ch4_1 Example	p. 97
Bake Lighting into Textures	p. 104
Fragment Operations	p. 105
Summary	p. 106
Changing Your Point of View	p. 107
The Depth Render Buffer	p. 107
The OpenGLES_Ch5_1 and OpenGLES_Ch5_2 Examples	p. 109
Deep Dive: Adding a Depth Buffer Without GLKKit	p. 115
Transformations	p. 117
Transformation Cookbook	p. 129
Perspective and the Viewing Frustum	p. 130
Summary	p. 132
Animation	p. 133
Motion Within a Scene: The OpenGLES_Ch6_l Example	p. 134
Animating Vertex Data	p. 140
Animating Colors and Lights: The OpenGLES_Ch6_3 Example	p. 148
Animating Textures	p. 153
Summary	p. 157
Loading and Using Models	p. 159
Modeling Tools and Formats	p. 160
Reading modelplist Files	p. 165
The 0penGLES_Ch7_1 Example	p. 168
Advanced Models	p. 172
Summary	p. 181
Special Effects	p. 183
Skybox	p. 183
Deep Dive: How Does GLKSkyboxEffect Work?	p. 186
Particles	p. 199
Billboards	p. 206
Summary	p. 216
Optimization	p. 217
Render as Little as Possible	p. 218
Don't Guess: Profile	p. 232
Minimize Buffer Copying	p. 234
Minimize State Changes	p. 235
Summary	p. 236
Terrain and Picking	p. 237
Terrain Implementation	p. 237
Adding Models	p. 249
OpenGL ES Camera	p. 253
Picking	p. 258
Optimizing	p. 267
Summary	p. 274
Math Cheat Sheet	p. 277
Overview	p. 278
Decoding a Matrix	p. 279
Quaternions	p. 296
Surviving Graphics Math	p. 297
Summary	p. 301
Putting It All Together	p. 303
Overview	p. 304
Everything All the Time	p. 306
Device Motion	p. 323
Summary	p. 325
Index	p. 327
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