makVrv::DtPixelBufferObject Class Reference

An object which wraps an OpenGL pixel buffer object and allows for asynchronous downloads of texture data. Uses Ping Pong PBOs to allow for fast access.

Classes
struct	PboAndSize

Public Member Functions
	DtPixelBufferObject ()
virtual	~DtPixelBufferObject ()
	DtPixelBufferObject (const DtPixelBufferObject &rhs)=delete
DtPixelBufferObject &	operator= (const DtPixelBufferObject &rhs)=delete
virtual void	downloadFromTexture (unsigned int texture, int w, int h)
virtual void	getData (void *data)
virtual unsigned int	bufferSize () const
virtual void	setupPixelBufferObjects (int numBuffers)

Protected Attributes
std::vector< PboAndSize >	myPbos
std::vector< GLsync >	myFences
int	myWriteIndex
int	myReadIndex

Constructor & Destructor Documentation

makVrv::DtPixelBufferObject::DtPixelBufferObject

(

)

constructor

virtual makVrv::DtPixelBufferObject::~DtPixelBufferObject ( )

virtual

destructor

makVrv::DtPixelBufferObject::DtPixelBufferObject ( const DtPixelBufferObject &  rhs )

delete

not allowed

Member Function Documentation

DtPixelBufferObject& makVrv::DtPixelBufferObject::operator= ( const DtPixelBufferObject &  rhs )

delete

not allowed

virtual void makVrv::DtPixelBufferObject::downloadFromTexture ( unsigned int  texture, int  w, int  h  )

virtual

Starts downloading the texture from memory.

virtual void makVrv::DtPixelBufferObject::getData ( void *  data )

virtual

Get the data by copying it into the available data. Warning! this will block until downloading is complete. Warning! if downloading has not started no data will be available. Warning! data must be at least bufferSize bytes.

virtual unsigned int makVrv::DtPixelBufferObject::bufferSize ( ) const

virtual

Return the buffered data in bytes.

virtual void makVrv::DtPixelBufferObject::setupPixelBufferObjects ( int  numBuffers )

virtual

Allocate and bind the pixel buffer objects.

Member Data Documentation

std::vector<PboAndSize> makVrv::DtPixelBufferObject::myPbos

protected

Pixel Buffer Object.

std::vector<GLsync> makVrv::DtPixelBufferObject::myFences

protected

int makVrv::DtPixelBufferObject::myWriteIndex

protected

Write buffer index.

int makVrv::DtPixelBufferObject::myReadIndex

protected

Read buffer index.

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

• /data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-2-branch/include/vrvGraphics/DtPixelBufferObject.h