SoCpuBufferCompressed Class Reference
[Tiles]

LDM buffer object optimized for compressed tile data. More...

#include <LDM/tiles/SoCpuBufferCompressed.h>

Inheritance diagram for SoCpuBufferCompressed:

List of all members.

Public Member Functions
	SoCpuBufferCompressed ()
	SoCpuBufferCompressed (SoDataCompressor *compressor)
virtual void	map (SoBufferObject *targetBufferObject, SoBufferObject::AccessMode accessMode, size_t startPosition=0, size_t mappingSize=SO_BUFFER_SIZE_ALL)
virtual void	map (SoCpuBufferObject *targetBufferObject, SoBufferObject::AccessMode accessMode, size_t startPosition=0, size_t mappingSize=SO_BUFFER_SIZE_ALL)
virtual void	map (SoGLBufferObject *targetBufferObject, SoBufferObject::AccessMode accessMode, size_t startPosition=0, size_t mappingSize=SO_BUFFER_SIZE_ALL)
virtual void *	map (SoBufferObject::AccessMode accessMode, size_t offset=0, size_t count=SO_BUFFER_SIZE_ALL)
virtual void	unmap (SoCpuBufferObject *bufferObject)
virtual void	unmap (SoGLBufferObject *bufferObject)
virtual void	unmap (SoBufferObject *bufferObject)
virtual void	unmap ()
virtual bool	getMinMax (double &min, double &max)
virtual void	setMinMax (const double &min, const double &max)
size_t	getRealSize () const
virtual void	setCompressor (SoDataCompressor *compressor)
Friends
class	SoCpuBufferCompressedImpl

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Detailed Description

LDM buffer object optimized for compressed tile data.

This type of buffer efficiently represents a tile containing compressed data (usually read from a compressed LDM file). The buffer can be used like any other buffer, but uses much less memory when its contents are not actually being accessed.

SEE ALSO

SoBufferPropertiesInterface, SoCpuBufferObject

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Constructor & Destructor Documentation

SoCpuBufferCompressed::SoCpuBufferCompressed

(

)

Default constructor.

SoCpuBufferCompressed::SoCpuBufferCompressed

(

SoDataCompressor *

compressor

)

Constructor with compressor given as parameter.

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Member Function Documentation

virtual bool SoCpuBufferCompressed::getMinMax	(	double &	min,
		double &	max
	)			[virtual]

Get the min and max values in the buffer, if they are known.

Returns false if these values have not been set or computed. Returns true if values are available.

Parameters:

	min	user variable to store min value
	max	user variable to store max value

Implements SoBufferPropertiesInterface.

size_t SoCpuBufferCompressed::getRealSize

(

)

const [virtual]

Returns the size of the uncompressed data in bytes.

Implements SoBufferPropertiesInterface.

virtual void* SoCpuBufferCompressed::map	(	SoBufferObject::AccessMode	accessMode,
		size_t	offset = 0,
		size_t	count = SO_BUFFER_SIZE_ALL
	)			[virtual]

Returns a pointer to the memory array used for the storage of the buffer.

Returns:

Pointer to the memory array used for the storage.

Reimplemented from SoBufferObject.

virtual void SoCpuBufferCompressed::map	(	SoGLBufferObject *	targetBufferObject,
		SoBufferObject::AccessMode	accessMode,
		size_t	startPosition = 0,
		size_t	mappingSize = SO_BUFFER_SIZE_ALL
	)			[virtual]

Map the current buffer object into the specified GL buffer object.

See the general map method for more information.

virtual void SoCpuBufferCompressed::map	(	SoCpuBufferObject *	targetBufferObject,
		SoBufferObject::AccessMode	accessMode,
		size_t	startPosition = 0,
		size_t	mappingSize = SO_BUFFER_SIZE_ALL
	)			[virtual]

Map the current buffer object into the specified CPU buffer object.

See the general map method for more information.

virtual void SoCpuBufferCompressed::map	(	SoBufferObject *	targetBufferObject,
		SoBufferObject::AccessMode	accessMode,
		size_t	startPosition = 0,
		size_t	mappingSize = SO_BUFFER_SIZE_ALL
	)			[virtual]

Map the current buffer object into the specified buffer object.

It is useful in order to use a buffer in multiple contexts.

Parameters:

	targetBufferObject	The buffer object which will be the mapped version of this buffer.
	accessMode	The access mode used for the mapping.
	startPosition	offset in source buffer to map from (default is start of buffer).
	mappingSize	size from the startPosition, if SO_BUFFER_SIZE_ALL then the whole buffer is mapped.

virtual void SoCpuBufferCompressed::setCompressor

(

SoDataCompressor *

compressor

)

[virtual]

Set the compressor used to decompress buffer.

Parameters:

compressor

Pointer to the compressor to use

virtual void SoCpuBufferCompressed::setMinMax	(	const double &	min,
		const double &	max
	)			[virtual]

Set the min and max values for this buffer.

Parameters:

	min	user variable containing min value
	max	user variable containing max value

virtual void SoCpuBufferCompressed::unmap

(

)

[virtual]

Unmap a mapped buffer.

No error is reported if the buffer was not mapped.

Reimplemented from SoBufferObject.

virtual void SoCpuBufferCompressed::unmap

(

SoBufferObject *

bufferObject

)

[virtual]

Remove the specified bufferObject from the list of buffers which map the current buffer.

If the access mode supports writing the specified buffer is sync'd with the buffer.

Parameters:

bufferObject

Buffer to be unmapped.

virtual void SoCpuBufferCompressed::unmap

(

SoGLBufferObject *

bufferObject

)

[virtual]

Unmap the specified GL buffer object
It is defined just to speed up the call when the type of the object is known.

If the access mode supports writing the specified buffer is sync'd with the buffer.

See the general unmap function for more information.

Parameters:

bufferObject

Buffer to be unmapped.

virtual void SoCpuBufferCompressed::unmap

(

SoCpuBufferObject *

bufferObject

)

[virtual]

Unmap the specified CPU buffer object
It is defined just to speed up the call when the type of the object is known.

Remove the specified bufferObject from the list of buffers which map the current buffer.

See the general unmap function for more information.

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Friends And Related Function Documentation

friend class SoCpuBufferCompressedImpl [friend]

Reimplemented from SoBufferPropertiesInterface.

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The documentation for this class was generated from the following file:

• LDM/tiles/SoCpuBufferCompressed.h