makVrv::DtGlVaoManager Class Reference

This class is used to manage an opengl vertex array object (VAO) dealing with multiple opengl contexts.

Background: VAO's cannot be shared between OpenGL contexts. This class helps manage that situation by creating and tracking VAO handles for each unique context.

Basically, the user should call getOrCreateVao with a graphics context active (typically during draw) to get a handle for a VAO for that specific graphics context.

getOrCreateVao will indicate if a new context was encountered and at that time the user should bind buffers associated with the VAO (to record the vao)

When the VAO is no longer needed (for example, during shutdown), clearVaos should be called See DtWeatherLightning, DtWeatherPrecipitationShaft for examples of how to use this class

Public Member Functions
	DtGlVaoManager (makVrv::DtDe &de)
virtual	~DtGlVaoManager ()
virtual unsigned int	getOrCreateVao (bool &created)
virtual void	clearVaos (void)

Protected Member Functions
virtual void	slot_contextAboutToBeDestroyed (const void *glContext)
virtual void	deleteVao (const void *glContext)

Protected Attributes
DtDe &	myDe
DtSignalConnectionManager	myConnections
std::unordered_map< const void *, DtGlVaoAndContext >	myGlContextToVao
DtOsgToGlContextTracker &	myOsgToGlContextTracker
DtIndirectLog &	myIndirectLog
DtGlDeleteObjectManager &	myGlDeleteObjectManager

Private Member Functions
	DtGlVaoManager ()=delete
	DtGlVaoManager (const DtGlVaoManager &)=delete
DtGlVaoManager &	operator= (const DtGlVaoManager &)=delete

Constructor & Destructor Documentation

makVrv::DtGlVaoManager::DtGlVaoManager

(

makVrv::DtDe &

de

)

CTOR.

virtual makVrv::DtGlVaoManager::~DtGlVaoManager ( )

virtual

DTOR.

makVrv::DtGlVaoManager::DtGlVaoManager ( )

privatedelete

not allowed

makVrv::DtGlVaoManager::DtGlVaoManager ( const DtGlVaoManager &  )

privatedelete

not allowed

Member Function Documentation

DtGlVaoManager& makVrv::DtGlVaoManager::operator= ( const DtGlVaoManager &  )

privatedelete

not allowed

virtual unsigned int makVrv::DtGlVaoManager::getOrCreateVao ( bool &  created )

virtual

get or create a vao for the current context

virtual void makVrv::DtGlVaoManager::clearVaos ( void  )

virtual

Clear vaos for all contexts This will: -immediately delete the vao in the current context -add the vaos in other contexts to the queue for delete manager.

virtual void makVrv::DtGlVaoManager::slot_contextAboutToBeDestroyed ( const void *  glContext )

protectedvirtual

slot for when a context is about to be destroyed This is used to delete the vao

virtual void makVrv::DtGlVaoManager::deleteVao ( const void *  glContext )

protectedvirtual

internal

Member Data Documentation

DtDe& makVrv::DtGlVaoManager::myDe

protected

DtSignalConnectionManager makVrv::DtGlVaoManager::myConnections

protected

for handling context destroyed event

std::unordered_map<const void*, DtGlVaoAndContext> makVrv::DtGlVaoManager::myGlContextToVao

protected

DtOsgToGlContextTracker& makVrv::DtGlVaoManager::myOsgToGlContextTracker

protected

DtIndirectLog& makVrv::DtGlVaoManager::myIndirectLog

protected

DtGlDeleteObjectManager& makVrv::DtGlVaoManager::myGlDeleteObjectManager

protected

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

• /data/exports/nrhent7-1/nightly/docs/vrForces.vrf5-1-branch/include/vrvOsg/DtGlVaoManager.h