//---------------------------------------------------------------------------

//

//  File: OpenGLTexture2DReader.m

//

//  Abstract: Utility toolkit for managing PBOs for reading from a texture.

//           

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//

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#import "OpenGLTexture2DReader.h"

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

//---------------------------------------------------------------------------

@implementation OpenGLTexture2DReader

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Designated Initializers

//---------------------------------------------------------------------------

//

// Initialize

//

//---------------------------------------------------------------------------

- (id) initTexture2DReaderWithSize:(const NSSize *)theSize

                             usage:(const GLenum)theUsage

                            target:(const GLenum)theTarget

                            format:(const GLenum)theFormat

{

    self = [super initTexture2DAuthorBaseWithSize:theSize

                                            usage:theUsage

                                           target:theTarget

                                           format:theFormat];

    if( !self )

    {

        NSLog( @">> ERROR: OpenGL Texture 2D Reader - Instantiating base author object failed!" );

    } // if

    return  self;

} // initTexture2DReaderWithSize

//---------------------------------------------------------------------------

- (id) initTexture2DReaderWithSize:(const NSSize *)theSize

                             usage:(const GLenum)theUsage

                            target:(const GLenum)theTarget

                             level:(const GLint)thelevel

                            format:(const GLenum)theFormat

                            border:(const BOOL)hasBorder

{

    self = [super initTexture2DAuthorBaseWithSize:theSize

                                            usage:theUsage

                                           target:theTarget

                                            level:thelevel

                                           format:theFormat

                                           border:hasBorder];

    if( !self )

    {

        NSLog( @">> ERROR: OpenGL Texture 2D Reader - Instantiating base author object failed!" );

    } // if

    return  self;

} // initTexture2DReaderWithSize

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Destructor

//---------------------------------------------------------------------------

- (void) dealloc 

{

    [super dealloc];

} // dealloc

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------

#pragma mark -

#pragma mark Public - Utilities

//---------------------------------------------------------------------------

//

// Use offset instead of pointer to copy pixels from texture.

//

//---------------------------------------------------------------------------

- (BOOL) map

{   

    [self read];

    return( [super map] );

} // map

//---------------------------------------------------------------------------

@end

//---------------------------------------------------------------------------

//---------------------------------------------------------------------------