OpenGL ES 3.0 Programming Guide

114 Preprocessor and Directives 115 Uniform and Interpolator Packing 117 Precision Qualifiers 119 Invariance 121 Summary 123 Chapter 6: Vertex Attributes, Vertex Arrays, and Buffer Objects 125 Specifying Vertex Attribute Data 126 Declaring Vertex Attribute Variables in a Vertex Shader 135 Vertex Buffer Objects 140 Vertex Array Objects 150 Mapping Buffer Objects 154 Copying Buffer Objects 159 Summary 160 Chapter 7: Primitive Assembly and Rasterization 161 Primitives 161 Drawing Primitives 165 Primitive Assembly 174 Rasterization 179 Occlusion Queries 183 Summary 185 Chapter 8: Vertex Shaders 187 Vertex Shader Overview 188 Vertex Shader Examples 196 Generating Texture Coordinates 205 Vertex Skinning 207 Transform Feedback 211 Vertex Textures 214 OpenGL ES 1.1 Vertex Pipeline as an ES 3.0 Vertex Shader 215 Summary 223 Chapter 9: Texturing 225 Texturing Basics 226 Compressed Textures 262 Texture Subimage Specification 266 Copying Texture Data from the Color Buffer 269 Sampler Objects 273 Immutable Textures 276 Pixel Unpack Buffer Objects 277 Summary 278 Chapter 10: Fragment Shaders 279 Fixed-Function Fragment Shaders 280 Fragment Shader Overview 282 Implementing Fixed-Function Techniques Using Shaders 286 Summary 295 Chapter 11: Fragment Operations 297 Buffers 298 Fragment Tests and Operations 303 Blending 311 Dithering 314 Multisampled Anti-Aliasing 314 Reading and Writing Pixels to the Framebuffer 316 Multiple Render Targets 320 Summary 324 Chapter12: Framebuffer Objects 325 Why Framebuffer Objects? 325 Framebuffer and Renderbuffer Objects 327 Creating Framebuffer and Renderbuffer Objects 329 Using Renderbuffer Objects 330 Using Framebuffer Objects 335 Framebuffer Blits 342 Framebuffer Invalidation 344 Deleting Framebuffer and Renderbuffer Objects 346 Examples 348 Performance Tips and Tricks 354 Summary 355 Chapter 13: Sync Objects and Fences 357 Flush and Finish 357 Why Use a Sync Object? 358 Creating and Deleting a Sync Object 358 Waiting for and Signaling a Sync Object 359 Example 360 Summary 361 Chapter 14: Advanced Programming with OpenGL ES 3.0 363 Per-Fragment Lighting 363 Environment Mapping 370 Particle System Using Transform Feedback 380 Image Postprocessing 387 Projective Texturing 390 Noise Using a 3D Texture 397 Procedural Texturing 404 Rendering Terrain with Vertex Texture Fetch 410 Shadows Using a Depth Texture 414 Summary 420 Chapter 15: State Queries 421 OpenGL ES 3.0 Implementation String Queries 421 Querying Implementation-Dependent Limits 423 Querying OpenGL ES State 429 Hints 435 Entity Name Queries 436 Nonprogrammable Operations Control and Queries 436 Shader and Program State Queries 438 Vertex Attribute Queries 440 Texture State Queries 441 Sampler Queries 442 Asynchronous Object Queries 442 Sync Object Queries 443 Vertex Buffer Queries 444 Renderbuffer and Framebuffer State Queries 445 Summary 446 Chapter 16: OpenGL ES Platforms 447 Building for Microsoft Windows with Visual Studio 447 Building for Ubuntu Linux 449 Building for Android 4.3+ NDK (C++) 450 Building for Android 4.3+ SDK (Java) 452 Building for iOS 7 453 Summary 455 Appendix A: GL_HALF_FLOAT 457 16-Bit Floating-Point Number 458 Converting a Float to a Half-Float 459 Appendix B: Built-In Functions 463 Angle and Trigonometry Functions 465 Exponential Functions 466 Common Functions 467 Floating-Point Pack and Unpack Functions 471 Geometric Functions 472 Matrix Functions 474 Vector Relational Functions 475 Texture Lookup Functions 476 Fragment Processing Functions 483 Appendix C: ES Framework API 485 Framework Core Functions 485 Transformation Functions 490 Index 495