LDM buffer object optimized for uniform (single value) tile data. More...
#include <LDM/tiles/SoCpuBufferUniform.h>
Public Member Functions | |
SoCpuBufferUniform () | |
Default constructor. | |
SoCpuBufferUniform (const double value, SbDataType valueType) | |
Constructor. | |
virtual void | map (SoBufferObject *targetBufferObject, SoBufferObject::AccessMode accessMode, size_t startPosition=0, size_t mappingSize=SO_BUFFER_SIZE_ALL) |
Map the current buffer object into the specified buffer object. | |
virtual void | map (SoCpuBufferObject *targetBufferObject, SoBufferObject::AccessMode accessMode, size_t startPosition=0, size_t mappingSize=SO_BUFFER_SIZE_ALL) |
Map the current buffer object into the specified CPU buffer object. | |
virtual void | map (SoGLBufferObject *targetBufferObject, SoBufferObject::AccessMode accessMode, size_t startPosition=0, size_t mappingSize=SO_BUFFER_SIZE_ALL) |
Map the current buffer object into the specified GL buffer object. | |
virtual void | unmap (SoCpuBufferObject *bufferObject) |
Unmap the specified CPU buffer object It is defined just to speed up the call when the type of the object is known. | |
virtual void | unmap (SoGLBufferObject *bufferObject) |
Unmap the specified GL buffer object It is defined just to speed up the call when the type of the object is known. | |
virtual void | unmap (SoBufferObject *bufferObject) |
Remove the specified bufferObject from the list of buffers which map the current buffer. | |
virtual void * | map (SoBufferObject::AccessMode accessMode, size_t offset=0, size_t count=SO_BUFFER_SIZE_ALL) |
Returns a pointer to the memory array used for the storage of the buffer. | |
virtual void | unmap () |
Unmap a mapped buffer. | |
virtual void | memset (void *data, size_t dataSize=1, size_t offset=0, size_t count=SO_BUFFER_SIZE_ALL) |
This function sets the contents of (or a portion of) the buffer object to the specified value. | |
virtual void | memcpy (SoBufferObject *sourceBufferObject, size_t destOffset, size_t sourceOffset, size_t copySize) |
Memcpy the contents of sourceBufferObject into this buffer object. | |
virtual bool | getMinMax (double &min, double &max) |
Get the min and max values in the buffer, if they are known. | |
virtual double | getValue () const |
Get the value of the uniform tile. | |
virtual SbDataType | getType () const |
Get the type of the value of the uniform tile. | |
void | setValue (const double &value, const SbDataType &dataType) |
Set the value and data type for this uniform buffer. | |
virtual size_t | getRealSize () const |
Returns the real size of the buffer in bytes. | |
virtual void | setRealSize (const size_t &realSize) |
Set the real size of the buffer object in bytes. | |
Public Member Functions inherited from SoCpuBufferObject | |
SoCpuBufferObject () | |
Default constructor. | |
SoCpuBufferObject (void *buffer, size_t size) | |
Constructor that takes an existing block of CPU memory. | |
void | setBuffer (void *buffer, size_t size) |
Request that the buffer object manage an existing block of memory. | |
virtual SoBufferObject * | createInstance () const |
Create a new buffer with the same properties as the current one. | |
virtual void | clearInstance () |
This function clears the content of the buffer, it frees the memory if the mode was COPY. | |
Public Member Functions inherited from SoBufferObject | |
void | lockBuffer () |
Locks the buffer against concurrent calls from different threads. | |
void | unlockBuffer () |
Unlocks the buffer object. | |
virtual bool | setSize (size_t size) |
Sets the size in bytes of the buffer object. | |
virtual size_t | getSize () const |
Returns the size, in bytes, of the buffer object. | |
SoDeviceContext * | getContext () const |
Returns the device context where this buffer is valid. | |
SoBufferObject * | getMappedBufferObject () const |
Returns a pointer to the buffer object which is mapped by the actual object. | |
AccessMode | getMappedBufferObjectAccessMode () |
Returns the access mode used for the buffer mapping. | |
size_t | getMappedBufferObjectPosition () const |
Returns the position in the source buffer mapped in this buffer. | |
size_t | getMappedBufferObjectSize () const |
Returns the size of the mapped area in bytes. | |
Public Member Functions inherited from SoRefCounter | |
void | ref () const |
Adds a reference to an instance. | |
void | unref () const |
Removes a reference from an instance. | |
void | unrefNoDelete () const |
unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
int | getRefCount () const |
Returns current reference count. | |
void | lock () const |
lock this instance. | |
void | unlock () const |
unlock this instance. | |
Public Member Functions inherited from SoTypedObject | |
virtual SoType | getTypeId () const =0 |
Returns the type identifier for a specific instance. | |
SbBool | isOfType (const SoType &type) const |
Returns TRUE if this object is of the type specified in type or is derived from that type. | |
template<typename TypedObjectClass > | |
SbBool | isOfType () const |
Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Public Member Functions inherited from SoBufferPropertiesInterface | |
SoBufferPropertiesInterface () | |
Default constructor. | |
virtual | ~SoBufferPropertiesInterface () |
Destructor. | |
Public Member Functions inherited from SoLDMBufferObjectInterface | |
SoLDMBufferObjectInterface () | |
Default constructor. | |
virtual | ~SoLDMBufferObjectInterface () |
Destructor. | |
virtual void | prefetch () |
Simply expand the given buffer to OIV cache. | |
Friends | |
class | SoCpuBufferUniformImpl |
Additional Inherited Members | |
Public Types inherited from SoBufferObject | |
enum | AccessMode { READ_ONLY , SET , READ_WRITE } |
This enum provides the possible access modes for a mapped buffer object. More... | |
Static Public Member Functions inherited from SoBufferObject | |
static SoCpuBufferObjectCache * | getBufferObjectCache () |
Returns the cache manager object. | |
Static Public Member Functions inherited from SoTypedObject | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
LDM buffer object optimized for uniform (single value) tile data.
This type of buffer efficiently represents a uniform tile, in other words a tile in which every value is the same. The buffer can be used like any other buffer, but uses very little memory when its contents are not actually being accessed.
SoBufferPropertiesInterface, SoCpuBufferObject
Definition at line 49 of file SoCpuBufferUniform.h.
SoCpuBufferUniform::SoCpuBufferUniform | ( | ) |
Default constructor.
SoCpuBufferUniform::SoCpuBufferUniform | ( | const double | value, |
SbDataType | valueType | ||
) |
Constructor.
value | Initial value of uniform buffer. |
valueType | Initial value type of uniform buffer. |
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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.
min | user variable to store min value |
max | user variable to store max value |
Implements SoBufferPropertiesInterface.
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virtual |
Returns the real size of the buffer in bytes.
Implements SoBufferPropertiesInterface.
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Get the type of the value of the uniform tile.
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virtual |
Get the value of the uniform tile.
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Map the current buffer object into the specified buffer object.
It is useful in order to use a buffer in multiple contexts.
targetBufferObject | The buffer object which will be the mapped version of this buffer. |
accessMode | The access mode used for the mapping. Support only READ_ONLY mode |
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. |
Reimplemented from SoBufferObject.
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Returns a pointer to the memory array used for the storage of the buffer.
Reimplemented from SoBufferObject.
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Map the current buffer object into the specified CPU buffer object.
See the general map method for more information.
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virtual |
Map the current buffer object into the specified GL buffer object.
See the general map method for more information.
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Memcpy the contents of sourceBufferObject into this buffer object.
Reimplemented from SoBufferObject.
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This function sets the contents of (or a portion of) the buffer object to the specified value.
The dataSize parameter provides a way to do a memset with float, short, byte, etc values.
data | A pointer to the value to set in the buffer. |
dataSize | The size in bytes of the data value. Default is 1 byte. |
offset | The offset in bytes (where to start setting values). Default is 0. |
count | The number of values to set. Default is number of bytes in buffer. |
Reimplemented from SoBufferObject.
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Set the real size of the buffer object in bytes.
void SoCpuBufferUniform::setValue | ( | const double & | value, |
const SbDataType & | dataType | ||
) |
Set the value and data type for this uniform buffer.
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Unmap a mapped buffer.
No error is reported if the buffer was not mapped.
Reimplemented from SoBufferObject.
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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.
bufferObject | Buffer to be unmapped. |
Reimplemented from SoBufferObject.
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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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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.
bufferObject | Buffer to be unmapped. |
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friend |
Definition at line 209 of file SoCpuBufferUniform.h.