Pro OpenGL ES for iOS

16 CHAPTER 1: Computer Graphics: From Then to Now^

-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f,

-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f,

-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f,

-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,

-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,

-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f,

-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f,

-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f,

-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,

0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,

-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,

-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,

0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f,

0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f,

0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,

-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,

0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,

0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,

-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f,

-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f,

0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,

-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,

0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,

0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f,

-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f,

-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f

};

@interface TwoCubesViewController () {

GLuint _program;

GLKMatrix4 _modelViewProjectionMatrix; //3

GLKMatrix3 _normalMatrix;

float _rotation;

GLuint _vertexArray;

GLuint _vertexBuffer;

}

@property (strong, nonatomic) EAGLContext *context;

@property (strong, nonatomic) GLKBaseEffect *effect;

• (void)setupGL;


• (void)tearDownGL;


• (BOOL)loadShaders;


• (BOOL)compileShader:(GLuint )shader type:(GLenum)type file:(NSString )file;


• (BOOL)linkProgram:(GLuint)prog;


• (BOOL)validateProgram:(GLuint)prog;
  @end