Pro OpenGL ES for iOS

298 CHAPTER 9: Performance ’n’ Stuff^ The images that work best when compressed are those with color palettes that rely heavily ...

CHAPTER 9: Performance ’n’ Stuff (^299) „ A lot of the literature will recommend turning off ‘‘compile for thumb’’ in your build ...

300 CHAPTER 9: Performance ’n’ Stuff^ You start Instruments by using the Profile menu item or the build/run selection on the edi ...

CHAPTER 9: Performance ’n’ Stuff (^301) Figure 9-8. The main instruments screen at startup The following describes briefly what ...

302 CHAPTER 9: Performance ’n’ Stuff^ Record/Stop The Record/Stop button will start and end a recording session. When depressed, ...

CHAPTER 9: Performance ’n’ Stuff (^303) Figure 9-10. The inspector for the OpenGL analyzer The inspector will let you select wha ...

304 CHAPTER 9: Performance ’n’ Stuff^ „ #Lines Rendered: The number of line primitives rendered. „ #Platform Calls: The total in ...

CHAPTER 9: Performance ’n’ Stuff (^305) Figure 9-11. Picking data from the track pane Extended Detail This pane will display any ...

306 CHAPTER 9: Performance ’n’ Stuff^ „ Trace: Shows every OpenGL call made and supplies a call stack in the detail pane on the ...

10 Chapter OpenGL ES 2, Shaders, and... Her angel’s face, As the great eye of heaven shined bright, And made a sunshine in the s ...

308 CHAPTER 10: OpenGL ES 2, Shaders, and...^ replaced with the new iOS5 GLKit math libraries, so the learning curve is just a l ...

CHAPTER 10: OpenGL ES 2, Shaders, and... (^309) If this sounds like a lot of work for each fragment of each object in your scene ...

310 CHAPTER 10: OpenGL ES 2, Shaders, and...^ Values are passed to and from shaders in the following types: „ Uniforms, which ar ...

CHAPTER 10: OpenGL ES 2, Shaders, and... (^311) Back to the Spinning Cubes So, now let’s jump back to the original example of th ...

312 CHAPTER 10: OpenGL ES 2, Shaders, and...^ return YES; } When you get away from all of the error handling code, the process b ...

CHAPTER 10: OpenGL ES 2, Shaders, and... (^313) if (logLength > 0) { GLchar log = (GLchar )malloc(logLength); glGetProgramInf ...

314 CHAPTER 10: OpenGL ES 2, Shaders, and...^ Listing 10-4. Loading the Shaders and Resolving Parameters (BOOL)loadShaders { GL ...

CHAPTER 10: OpenGL ES 2, Shaders, and... (^315) if (_program) { glDeleteProgram(_program); _program = 0; } return NO; } uniforms ...

316 CHAPTER 10: OpenGL ES 2, Shaders, and...^ „ Besides binding the attributes to named entities in the shaders, you can also do ...

CHAPTER 10: OpenGL ES 2, Shaders, and... (^317) Here’s a closer look: „ Lines 1f declare the attributes that we specified in the ...