SoCpuBufferBitSet Class Reference
[Tiles]

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

#include <LDM/tiles/SoCpuBufferBitSet.h>

Inheritance diagram for SoCpuBufferBitSet:

List of all members.

Public Member Functions
	SoCpuBufferBitSet ()
	SoCpuBufferBitSet (SoCpuBufferObject *cpuBuffer)
virtual SoBufferObject *	createInstance () const
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 void	memcpy (SoBufferObject *sourceBufferObject, size_t destOffset=0, size_t sourceOffset=0, size_t copySize=SO_BUFFER_SIZE_ALL)
virtual void	memset (void *value, size_t valueSize=1, size_t offset=0, size_t count=SO_BUFFER_SIZE_ALL)
virtual bool	getMinMax (double &min, double &max)
virtual void	setMinMax (const double &min, const double &max)
virtual size_t	getRealSize () const
Friends
class	SoCpuBufferBitSetImpl

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Detailed Description

LDM buffer object optimized for bitset tile data.

This type of buffer efficiently represents a tile containing bitset data. The buffer can be used like any other buffer, but uses less memory when its contents are not actually being accessed.

SEE ALSO

SoBufferPropertiesInterface, SoCpuBufferObject

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Constructor & Destructor Documentation

SoCpuBufferBitSet::SoCpuBufferBitSet

(

)

Default constructor.

SoCpuBufferBitSet::SoCpuBufferBitSet

(

SoCpuBufferObject *

cpuBuffer

)

Constructor from a SoCpuBufferObject containing a bitset.

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Member Function Documentation

virtual SoBufferObject* SoCpuBufferBitSet::createInstance

(

)

const [virtual]

Create a new buffer with the same properties as the current one.

The new instance will have the same context or device properties, but no memory is allocated.

Reimplemented from SoCpuBufferObject.

virtual bool SoCpuBufferBitSet::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.

virtual size_t SoCpuBufferBitSet::getRealSize

(

)

const [virtual]

Returns the size of the buffer in bytes.

For this type of buffer the real size is the same as the size of the SoBufferObject.

Implements SoBufferPropertiesInterface.

virtual void* SoCpuBufferBitSet::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 SoCpuBufferBitSet::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 SoCpuBufferBitSet::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 SoCpuBufferBitSet::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 SoCpuBufferBitSet::memcpy	(	SoBufferObject *	sourceBufferObject,
		size_t	destOffset = 0,
		size_t	sourceOffset = 0,
		size_t	copySize = SO_BUFFER_SIZE_ALL
	)			[virtual]

Copies data from the specified buffer object into this buffer object.
If the size or the offset are not valid an error is reported (SoDebugError). This buffer is not resized, if it is too small an error is reported.

Warning:

Source and destination overlaping support is implementation dependent, if not supported an error is reported.

Parameters:

	sourceBufferObject	The buffer object to be copied.
	destOffset	The starting offset in the destination buffer object, useful for data subsets.
	sourceOffset	The starting offset in the source buffer object, useful for data subsets.
	copySize	The number of bytes to copy from the source buffer object (SO_BUFFER_SIZE_ALL means all).

virtual void SoCpuBufferBitSet::memset	(	void *	value,
		size_t	valueSize = 1,
		size_t	offset = 0,
		size_t	count = SO_BUFFER_SIZE_ALL
	)			[virtual]

This function sets the contents of (or a portion of) this buffer object to the specified value.

Sets 0 if value = 0, 1 if value != 0.

The valueSize parameter provides a way to do a memset with float, short, byte, etc values. The first value changed in this buffer is given by the offset argument. The number of values to change.

Parameters:

	value	is a pointer to the value to set in the buffer.
	valueSize	The size in bytes of the value. Default is 1 byte.
	offset	Index of first value to be changed. Default is 0.
	count	The number of values to change. Default is number of values in buffer.

Reimplemented from SoBufferObject.

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

Set min and max values for this buffer.

Parameters:

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

virtual void SoCpuBufferBitSet::unmap

(

)

[virtual]

Unmap a mapped buffer.

No error is reported if the buffer was not mapped.

Reimplemented from SoBufferObject.

virtual void SoCpuBufferBitSet::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 SoCpuBufferBitSet::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 SoCpuBufferBitSet::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 SoCpuBufferBitSetImpl [friend]

Reimplemented from SoBufferPropertiesInterface.

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

• LDM/tiles/SoCpuBufferBitSet.h