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The Mac has fully embraced OpenGL throughout its visual systems. In fact, Apple's highly efficient, modern OpenGL implementation makes Mac OS X one of today's best platforms for OpenGL development.OpenGL Programming on Mac OS Xis the first comprehensive resource for every graphics programmer who wants to create, port, or optimize OpenGL applications for this high-volume platform. Leading OpenGL experts Robert Kuehne and J. D. Sullivan thoroughly explain the Mac's diverse OpenGL APIs, both old and new. They illuminate crucial OpenGL setup, configuration, and performance issues that are unique to the Mac platform. Next, they offer practical, start-to-finish guidance for integrating key Mac-native APIs with OpenGL, and leveraging the full power of the Mac platform in your graphics applications. Coverage includes A thorough review of Mac hardware and software architectures and their performance implications In-depth, expert guidance for accessing OpenGL from each of the Mac's core APIs: CGL, AGL, and Cocoa Interoperating with other Mac APIs: incorporating video with QuickTime, performing image effects with Core Image, and processing CoreVideo data Analyzing Mac OpenGL application performance, resolving bottlenecks, and leveraging optimizations only available on the Mac Detecting, integrating, and using OpenGL extensions An accompanying Web site ( www.macopenglbook.com ) contains the book's example code, plus additional OpenGL-related resources. OpenGL Programming on Mac OS Xwill be valuable to Mac programmers seeking to leverage OpenGL's power, OpenGL developers porting their applications to the Mac platform, and cross-platform graphics developers who want to take advantage of the Mac platform's uniquely intuitive style and efficiency.

Robert P. Kuehne leads Blue Newt Software, a consultancy that specializes in helping clients enhance their 3D graphics applications. Formerly Technical Lead for Silicon Graphics' OpenGL Shading Language, Kuehne has been involved with OpenGL since it was created, in roles ranging from programmer to shader compiler developer to SIGGRAPH presenter. He has also been a Macintosh developer since the early 1990s.

J. D. Sullivan is an OpenGL driver engineer who has been writing graphics software professionally for more than fifteen years. While at Silicon Graphics, Inc., he was one of the original designers and implementers of the Volumizer API and later worked as part of the OpenGL software team focused on the Cobalt and Krypton graphics chipsets. Since SGI, Sullivan has worked on the Mac as his primary development platform, and he serves on the OpenGL Architecture Review Board.

List of Figures	p. xv
List of Tables	p. xix
List of Examples	p. xxi
Preface	p. xxv
Acknowledgments	p. xxix
About the Authors	p. xxxi
Mac OpenGL
Introduction	p. 1
Why the Mac?	p. 2
Why OpenGL?	p. 3
The Book	p. 4
OpenGL
Architecture on OS X	p. 7
Overview	p. 7
About OpenGL	p. 7
OpenGL Feature Support	p. 14
API Layers	p. 15
The Mac OS OpenGL Plug-In Architecture	p. 17
Renderers	p. 18
Summary	p. 21
Mac Hardware Architecture	p. 23
Overview	p. 23
Data Flow and Limitations	p. 24
Summary	p. 32
Application Programming on OS X	p. 33
Overview	p. 33
Mac OS X Versions	p. 33
System Configuration	p. 34
Power Management	p. 34
Filesystem	p. 38
Finding, Verifying, and Filing Bugs	p. 39
Threading	p. 41
Data Parallel Computation: SIMD	p. 42
OpenGL
Configuration and Integration	p. 45
API Introductions and Overview	p. 46
Configuration API Relationships	p. 49
The CGL API for OpenGL
Configuration	p. 55
Overview	p. 55
Error Handling	p. 57
Pixel Format Selection	p. 57
Context Management	p. 63
Drawables	p. 77
Using CGL Macros	p. 86
Summary	p. 86
The AGL API for OpenGL
Configuration	p. 89
Overview	p. 89
Software Layering	p. 90
Pixel Format and Context	p. 91
Additional Topics	p. 104
Alternative Rendering Destinations	p. 109
Summary	p. 120
The Cocoa API for OpenGL
Configuration	p. 121
Overview	p. 122
NSOpenGLView	p. 122
NSView	p. 133
Additional Topics	p. 140
Alternative Rendering Destinations	p. 152
Summary	p. 162
The GLUT API for OpenGL
Configuration	p. 163
Overview	p. 164
Configuration and Setup	p. 165
Summary	p. 171
API Interoperability	p. 173
Overview	p. 173
Cocoa Image: NSImage	p. 174
QuickTime	p. 184
Summary	p. 193
Performance	p. 195
Overview	p. 195
Axioms for Designing High-Performance OpenGL Applications	p. 196
OpenGL for Mac OS X Rules of Thumb for Performance	p. 201
Metrics	p. 207
Efficient Data Management Using Mac OpenGL	p. 209
Efficient Handling of Vertex Data	p. 210
Efficient Handling of Texture Data	p. 221
Textures	p. 225
Shaders	p. 226
Tools	p. 226
Graphics Tools	p. 228
Putting It All Together	p. 237
Summary	p. 243
Mac Platform Compatibility	p. 245
Mac OS Versions	p. 245
OpenGL Platform Identification	p. 248
Mac OS Version Identification	p. 249
Summary	p. 251
OpenGL Extensions	p. 253
Overview	p. 253
Extension Design and API Integration	p. 254
Extension Styles and Types	p. 256
Identification, Selection, Query, and Usage	p. 257
Utilization and Binding	p. 262
Extension Management Libraries	p. 269
Summary	p. 275
X11 APIs for OpenGL Configuration	p. 277
Installation	p. 277
Building X11 Applications on OS X	p. 278
X11 Color Models	p. 279
Glossary	p. 281
The Cocoa API for OpenGL Configuration in Leopard, Mac OS X 10.5	p. 283
Overview	p. 284
NSOpenGL View	p. 284
NSView	p. 294
Additional Topics	p. 300
Alternative Rendering Destinations	p. 312
Summary	p. 322

Bibliography	p. 323
Index	p. 325
Table of Contents provided by Publisher. All Rights Reserved.

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The Mac is a computing platform that virtually defines ease of use, consistency, and effortless computing. The story of OpenGL on the Mac has been, shall we say, a bit more complex. With the arrival of OS X, the Mac platform supports even more ways of constructing OpenGL applications for the Mac. While there has been an apparent proliferation of OpenGL interfaces for the Mac, the platform itself has stabilized architecturally and programmatically and now offers the best developer and user experience in the industry for development of graphics applications. This is not just a statement of preference but an observation that, in many ways, the Mac is an OpenGL platform without peer. The Mac is a fun and efficient platform on which to develop applications, thanks to the set of OpenGL drivers at its core that support a rich and deep feature set, great performance, and deep integration in OS X. The Mac has excellent and usable tools for quickly monitoring OpenGL behavior, rapidly prototyping shaders, and digging deep to analyze OpenGL behavior in the application and driver. The Mac makes OpenGL development efficient and fun. Although the development tools and environment are powerful and helpful, many corners of OpenGL on the Mac remain under-documented. A developer must choose among several development languages, user interface (UI) toolkits, window managers, and additional Mac APIs such as QuickTime and Core Image, yet still ensure that his or her software runs well on a variety of target Mac platforms. All of these factors can make using OpenGL on the Mac a challenging task even for developers who have been writing OpenGL applications on other platforms for years. This book was put together with an eye toward simplifying and clarifying the ways in which OpenGL can be used on the Mac. It is our hope that by codifying all the information available about OpenGL on the Mac in one place and by presenting each interface with clarity and depth, developers will have a one stop reference for all things OpenGL on the Mac. Who Should Read This Book? This book is intended for OpenGL programmers who wish to develop applications on Mac OS X. We target two categories of OpenGL programmers: those who are new to OpenGL on the Mac and those who want to explore the specific benefits of writing OpenGL programs on the Mac. For those who are new to OpenGL on the Mac--either existing Mac developers or those coming from other platforms--we provide advice on cross-platform issues, portable interfaces, and ideas about choosing native interfaces for the Mac. Existing Mac developers will find a single-source reference guide to all OpenGL interfaces on the Mac. For developers wishing to explore the power and richness of the Mac, we provide complete details on Mac-specific OpenGL extensions and ways of integrating other Mac APIs (such as QuickTime and Core Image) into applications. Organization This text is intended to be useful as both a programming guide and a reference manual. The text contains several chapters focused on OpenGL on the Mac and other chapters that cover related graphics information. A few appendices are included to cover supplemental information in detail. The chapters are organized as follows: Architecture Chapters 1 through 4 describe the hardware and software architectures of the Mac. This part of the book also presents an introduction to performance considerations as they relate to architecture. Configuration and Integration Chapter 5 explores the interfaces to OpenGL on the Mac in detail. Those new to OpenGL on the Mac should begin here. CGL, AGL, Cocoa, GLUT Chapters 6 through 9 explore details behind the individual APIs. Each API is covered in detail in its own chapter, and the APIs are compared and contrasted in each chapter. These chapters form the core of this book. Interoperability Chapter 10 collects a variety of interesting OpenGL an

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OpenGL Programming on Mac OS X : Architecture, Performance, and Integration

OpenGL Programming on Mac OS X : Architecture, Performance, and Integration

0321356527

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