OpenGL ES 2.0 Programming Guide

The first comprehensive guide to developing 3D graphic applications on mobile devices, from the leading authorities on OpenGL ES.

Aaftab Munshi is the spec editor for the OpenGL ES 1.1 and 2.0 specifications. Now at Apple, he was formerly senior architect in ATI’s handheld group.

Dan Ginsburg is senior member of technical staff at AMD. At AMD and ATI, he has worked in a variety of roles, including the development of OpenGL drivers, the creation of desktop and handheld 3D demos, and the development of handheld GPU developer tools.

Dave Shreiner is one of the world’s foremost authorities on OpenGL. He is a systems architect at ARM, Inc., and the lead author of the official OpenGL® Programming Guide, Sixth Edition (Addison-Wesley, 2007) and series editor for the Addison-Wesley OpenGL Series.

List of Figures	p. xiii
List of Examples	p. xv
List of Tables	p. xix
Foreword xxi Preface	p. xxiii
Acknowledgments	p. xxix
About the Authors	p. xxxi
Introduction to OpenGL ES 2.0 1 What Is OpenGL ES?	p. 1
OpenGL ES 2.0 3 Vertex Shader	p. 4
Primitive Assembly	p. 6
Rasterization	p. 7
Fragment Shader	p. 7
Per-Fragment Operations	p. 9
OpenGL ES 2.0 and OpenGL ES 1.x Backward Compatibility	p. 11
EGL	p. 12
Programming with OpenGL ES 2.0 13 Further Reading	p. 18
Hello Triangle: An OpenGL ES 2.0 Example	p. 19
Code Framework	p. 20
Where to Download the Examples	p. 20
Hello Triangle Example	p. 21
Building and Running the Examples	p. 25
Using the OpenGL ES 2.0 Framework	p. 26
Creating a Simple Vertex and Fragment Shader	p. 27
Compiling and Loading the Shaders	p. 29
Creating a Program Object and Linking the Shaders	p. 30
Setting the Viewport and Clearing the Color Buffer	p. 32
Loading the Geometry and Drawing a Primitive	p. 33
Displaying the Back Buffer	p. 33
An Introduction to EGL	p. 35
Communicating with the Windowing System	p. 36
Checking for Errors	p. 37
Initializing EGL	p. 37
Determining the Available Surface Configurations	p. 38
Querying EGLConfig Attributes	p. 39
Letting EGL Choose the Config	p. 39
Creating an On-Screen Rendering Area: The EGL Window	p. 43
Creating an Off-Screen Rendering Area: EGL Pbuffers	p. 46
Creating a Rendering Context	p. 50
Making an EGLContext Current	p. 52
Putting All Our EGL Knowledge Together	p. 52
Synchronizing Rendering	p. 54
Shaders and Programs	p. 57
Shaders and Programs	p. 57
Uniforms and Attributes	p. 67
Shader Compiler and Shader Binaries	p. 72
OpenGL ES Shading Language	p. 77
OpenGL ES Shading Language Basics	p. 78
Variables and Variable Types	p. 78
Variable Constructors	p. 79
Vector and Matrix Components	p. 81
Constants	p. 82
Structures	p. 82
Arrays	p. 83
Operators	p. 84
Functions	p. 85
Built-In Functions	p. 86
Control Flow Statements	p. 87
Uniforms 88 Attributes	p. 89
Varyings	p. 90
Preprocessor and Directives	p. 92
Uniform and Varying Packing	p. 94
Precision Qualifiers 96 Invariance	p. 97
Vertex Attributes, Vertex Arrays, and Buffer Objects	p. 101
Specifying Vertex Attribute Data	p. 102
Declaring Vertex Attribute Variables in a Vertex Shader	p. 110
Vertex Buffer Objects	p. 115
Mapping Buffer Objects	p. 124
Primitive Assembly and Rasterization	p. 127
Primitives	p. 127
Drawing Primitives	p. 131
Primitive Assembly	p. 136
Rasterization	p. 141
Vertex Shaders	p. 147
Vertex Shader Overview	p. 148
Vertex Shader Examples	p. 159
Generating Texture Coordinates	p. 167
Vertex Skinning	p. 168
OpenGL ES 1.1 Vertex Pipeline as an ES 2.0 Vertex Shader	p. 173
Texturing	p. 181
Texturing Basics	p. 181
Compressed Textures	p. 201
Texture Subimage Specification	p. 202
Copying Texture Data from the Color Buffer	p. 204
Optional Extensions	p. 207
Fragment Shaders	p. 215
Fixed Function Fragment Shaders	p. 216
Fragment Shader Overview	p. 218
Implementing Fixed Function Techniques Using Shaders	p. 222
Fragment Operations	p. 233
Buffers	p. 234
Fragment Tests and Operations	p. 238
Blending	p. 246
Dithering	p. 249
Multisampled Antialiasing	p. 249
Reading and Writing Pixels to the Framebuffer	p. 250
Framebuffer Objects	p. 253
Why Framebuffer Objects	p. 253
Framebuffer and Renderbuffer Objects	p. 255
Creating Framebuffer and Renderbuffer Objects	p. 258
Using Renderbuffer Objects 259 Using Framebuffer Objects	p. 262
Deleting Framebuffer and Renderbuffer Objects	p. 269
Examples	p. 271
Performance Tips and Tricks	p. 277
Advanced Programming with OpenGL ES 2.0	p. 279
Per-Fragment Lighting	p. 279
Environment Mapping	p. 286
Particle System with Point Sprites	p. 290
Image Postprocessing	p. 296
Projective Texturing
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OpenGL ES 2.0 Programming Guide

Summary

Author Biography

Table of Contents

Supplemental Materials