This class is a component of the DtIndirectGeometry It inputs are: -> the instances registered with DtIndirectGeometry -> the viewing parameters (view matrix, projection matrix, etc) -> the indirect registrar (so that it can generate gpu data for -> the models of the instances from the interim data accessible -> via the registrar It outputs are: -> Tndirect command buffer -> The count of the indirect commands -> The input instances shuffled around/culled/lod'ed reflecting -> their order within the indirect command buffer generated -> It will also (optionally) do culling and lod. More...

Public Member Functions
	DtGpuCullingAndLod (DtIndirectGeometryRegistrar *registrar, bool viewFrustumCulling, bool lodChecking, bool useInstanceCount)
	constructor
virtual	~DtGpuCullingAndLod ()
	destructor
virtual void	doCullingAndLOD (const DtInstanceContainer &myInstances, const DtIndirectViewParameters &viewParameters, const DtIndirectRenderingParameters &irParams, const MapIntToInt &modelIdsToNumInstances, unsigned int contextID)
	do the culling and the lod
virtual void	bind ()
	bind the the instances that were re-distributed/culled/lod'ed whilst generating the command buffer
virtual void	unbind ()
	unbind the the instances that were re-distributed/culled/lod'ed whilst generating the command buffer
virtual void	bindIndirectThings ()
	bind the indirect command buffer and the count buffer
virtual void	unbindIndirectThings ()
	unbind the indirect command buffer and the count buffer
virtual bool	useInstanceCount (void) const
	whether we are optimizing for shared models (useInstanceCount()=true) or unique models (useInstanceCount()=false), across instances
virtual int	drawCount (void) const
	The number of draw commands generated.
virtual void	setShadersFolderPath (const std::string &shaderFolderPath)
	set up the shader folder path (to enable us to load shaders, de is not accessible here)
virtual void	setShadersFileCache (DtOsgShaderFilesCache *shaderFilesCache)
	set up the shader file cache (to enable us to load shaders, de is not accessible here)
virtual void	releaseGLObjects (osg::State *state) const

Protected Member Functions
virtual void	bindGpuOutputInstanceBuffer (void) const
	we need this advancing once per instance
virtual void	unbindGpuOutputInstanceBuffer (void) const
virtual void	createCullShaderAndProgramIfNecessary (void)
	The cull shader that does the culling/lod/indirect command buffer generation.
virtual void	updateGpuTexturesBuffer (unsigned int contextID, const DtInstanceContainer &instances)
	The buffer containing the bindless textures' addresses of the model textures.
virtual void	updateInstancesOffsetAndInstances (const DtInstanceContainer &instances, const MapIntToInt &modelIdsToNumInstances)

virtual void	updateGpuInstancesBuffer (const DtInstanceContainer &instances, const Vector3_64 &vCameraPosition, bool cameraRelative)
	update the various buffers that are fed to the cull shader -> if new models came in -> if textures became available (they can be asynchronously available, e.g.
virtual void	updateGpuGeometrySpecificationsBuffer (const int numGeometries, const DtInstanceContainer &instances)
virtual void	updateGpuMaterialsBuffer (const int numGeometries, const DtInstanceContainer &instances)
virtual void	updateGpuGeometryOffsetAndSizeBuffer (int &numGeometries, const DtInstanceContainer &instances)
virtual void	updateGpuIndirectBuffer (const DtInstanceContainer &instances, int numStates)
virtual void	clearInstanceCountIndirectBuffer (int numStates)

virtual void	printDebugInstances ()
	Debugging.
virtual int	printCountBufferCount ()
virtual void	printDrawCommandsDetails (GLuint drawCount)
virtual void	printInstancesDetails (GLuint drawCount)
virtual void	printModelIdsToNumOfGeosDetails (GLuint drawCount)

Protected Attributes
const DtIndirectGeometryRegistrar *	myRegistrar
DtGlBuffer *	myGpuInstancesBuffer
	The input instances for the GPU (generated/updated from the passed in instance container)
DtGlBuffer *	myGpuGeometrySpecificationsBuffer
	The spec buffer containing GeometrySpecifications for all the models/lods of the passed in instances.
DtGlBuffer *	myGpuGeometryOffsetAndSizeBuffer
	An internal indexing buffer that allows the cull shader to go from and intance to its GeometrySpecification in the Geometry Specification Buffer.
DtGlBuffer *	myGpuMaterialsBuffer
	The spec buffer containing Materials for all the models/lods of the passed in instances.
DtGlBuffer *	myGpuIndirectBuffer
	The indirect command buffer that will be generated.
DtGlBuffer *	myGpuCountBuffer
	the count buffer that will be generated
DtGlBuffer *	myGpuOutputInstanceBuffer
	The re-distributed/culled/lod'ed instances (a subset of the input instances)
GLuint	myCullProgram
GLuint	myCullShader
DtGlBuffer *	myGpuTexturesBuffer
MapIntToInt	myModelIdToIndex
Vector3_64	myPreviousCameraPosition
int	myMaxNumInstancesIndex
int	myModelViewMatrixIndex
int	myProjectionMatrixIndex
int	myZoomMagnificationIndex
bool	myViewFrustumCulling
bool	myLODChecking
bool	myUseInstanceCount
std::vector < InstancesOffsetAndNumOfInstances >	myInstancesOffsetAndNumInstances
DtGlBuffer *	myGpuInstancesOffsetAndNumInstances
int	myMaxAtomicCounters
std::string	myShaderFolderPath
DtOsgShaderFilesCache *	myShaderFilesCache

Static Protected Attributes
static const bool	myDebugInstancesAppended

Private Member Functions
	DtGpuCullingAndLod ()
	unimplemented default

Detailed Description

This class is a component of the DtIndirectGeometry It inputs are: -> the instances registered with DtIndirectGeometry -> the viewing parameters (view matrix, projection matrix, etc) -> the indirect registrar (so that it can generate gpu data for -> the models of the instances from the interim data accessible -> via the registrar It outputs are: -> Tndirect command buffer -> The count of the indirect commands -> The input instances shuffled around/culled/lod'ed reflecting -> their order within the indirect command buffer generated -> It will also (optionally) do culling and lod.

Constructor & Destructor Documentation

makVrv::DtGpuCullingAndLod::DtGpuCullingAndLod	(	DtIndirectGeometryRegistrar *	registrar,
		bool	viewFrustumCulling,
		bool	lodChecking,
		bool	useInstanceCount
	)

constructor

virtual makVrv::DtGpuCullingAndLod::~DtGpuCullingAndLod ( )

virtual

destructor

makVrv::DtGpuCullingAndLod::DtGpuCullingAndLod ( )

private

unimplemented default

Member Function Documentation

virtual void makVrv::DtGpuCullingAndLod::doCullingAndLOD	(	const DtInstanceContainer &	myInstances,
		const DtIndirectViewParameters &	viewParameters,
		const DtIndirectRenderingParameters &	irParams,
		const MapIntToInt &	modelIdsToNumInstances,
		unsigned int	contextID
	)

virtual

do the culling and the lod

virtual void makVrv::DtGpuCullingAndLod::bind ( )

virtual

bind the the instances that were re-distributed/culled/lod'ed whilst generating the command buffer

virtual void makVrv::DtGpuCullingAndLod::unbind ( )

virtual

unbind the the instances that were re-distributed/culled/lod'ed whilst generating the command buffer

virtual void makVrv::DtGpuCullingAndLod::bindIndirectThings ( )

virtual

bind the indirect command buffer and the count buffer

virtual void makVrv::DtGpuCullingAndLod::unbindIndirectThings ( )

virtual

unbind the indirect command buffer and the count buffer

virtual bool makVrv::DtGpuCullingAndLod::useInstanceCount ( void ) const

virtual

whether we are optimizing for shared models (useInstanceCount()=true) or unique models (useInstanceCount()=false), across instances

virtual int makVrv::DtGpuCullingAndLod::drawCount ( void ) const

virtual

The number of draw commands generated.

Is a value between [0, DtIndirectGeoUtils::getMaxDrawCountNoCullingNoLod()], inclusive

virtual void makVrv::DtGpuCullingAndLod::setShadersFolderPath ( const std::string & shaderFolderPath )

virtual

set up the shader folder path (to enable us to load shaders, de is not accessible here)

virtual void makVrv::DtGpuCullingAndLod::setShadersFileCache ( DtOsgShaderFilesCache * shaderFilesCache )

virtual

set up the shader file cache (to enable us to load shaders, de is not accessible here)

virtual void makVrv::DtGpuCullingAndLod::releaseGLObjects ( osg::State * state ) const

virtual

virtual void makVrv::DtGpuCullingAndLod::updateGpuInstancesBuffer	(	const DtInstanceContainer &	instances,
		const Vector3_64 &	vCameraPosition,
		bool	cameraRelative
	)

protectedvirtual

update the various buffers that are fed to the cull shader -> if new models came in -> if textures became available (they can be asynchronously available, e.g.

via osg ico) -> if the number of instances changed

virtual void makVrv::DtGpuCullingAndLod::updateGpuGeometrySpecificationsBuffer	(	const int	numGeometries,
		const DtInstanceContainer &	instances
	)

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::updateGpuMaterialsBuffer	(	const int	numGeometries,
		const DtInstanceContainer &	instances
	)

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::updateGpuGeometryOffsetAndSizeBuffer	(	int &	numGeometries,
		const DtInstanceContainer &	instances
	)

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::updateGpuIndirectBuffer	(	const DtInstanceContainer &	instances,
		int	numStates
	)

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::clearInstanceCountIndirectBuffer ( int numStates )

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::bindGpuOutputInstanceBuffer ( void ) const

protectedvirtual

we need this advancing once per instance

virtual void makVrv::DtGpuCullingAndLod::unbindGpuOutputInstanceBuffer ( void ) const

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::createCullShaderAndProgramIfNecessary ( void )

protectedvirtual

The cull shader that does the culling/lod/indirect command buffer generation.

virtual void makVrv::DtGpuCullingAndLod::updateGpuTexturesBuffer	(	unsigned int	contextID,
		const DtInstanceContainer &	instances
	)

protectedvirtual

The buffer containing the bindless textures' addresses of the model textures.

virtual void makVrv::DtGpuCullingAndLod::printDebugInstances ( )

protectedvirtual

Debugging.

virtual int makVrv::DtGpuCullingAndLod::printCountBufferCount ( )

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::printDrawCommandsDetails ( GLuint drawCount )

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::printInstancesDetails ( GLuint drawCount )

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::printModelIdsToNumOfGeosDetails ( GLuint drawCount )

protectedvirtual

virtual void makVrv::DtGpuCullingAndLod::updateInstancesOffsetAndInstances	(	const DtInstanceContainer &	instances,
		const MapIntToInt &	modelIdsToNumInstances
	)

protectedvirtual

Member Data Documentation

const DtIndirectGeometryRegistrar* makVrv::DtGpuCullingAndLod::myRegistrar

protected

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuInstancesBuffer

protected

The input instances for the GPU (generated/updated from the passed in instance container)

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuGeometrySpecificationsBuffer

protected

The spec buffer containing GeometrySpecifications for all the models/lods of the passed in instances.

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuGeometryOffsetAndSizeBuffer

protected

An internal indexing buffer that allows the cull shader to go from and intance to its GeometrySpecification in the Geometry Specification Buffer.

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuMaterialsBuffer

protected

The spec buffer containing Materials for all the models/lods of the passed in instances.

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuIndirectBuffer

protected

The indirect command buffer that will be generated.

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuCountBuffer

protected

the count buffer that will be generated

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuOutputInstanceBuffer

protected

The re-distributed/culled/lod'ed instances (a subset of the input instances)

GLuint makVrv::DtGpuCullingAndLod::myCullProgram

mutableprotected

GLuint makVrv::DtGpuCullingAndLod::myCullShader

mutableprotected

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuTexturesBuffer

protected

MapIntToInt makVrv::DtGpuCullingAndLod::myModelIdToIndex

protected

Vector3_64 makVrv::DtGpuCullingAndLod::myPreviousCameraPosition

protected

int makVrv::DtGpuCullingAndLod::myMaxNumInstancesIndex

protected

int makVrv::DtGpuCullingAndLod::myModelViewMatrixIndex

protected

int makVrv::DtGpuCullingAndLod::myProjectionMatrixIndex

protected

int makVrv::DtGpuCullingAndLod::myZoomMagnificationIndex

protected

bool makVrv::DtGpuCullingAndLod::myViewFrustumCulling

protected

bool makVrv::DtGpuCullingAndLod::myLODChecking

protected

bool makVrv::DtGpuCullingAndLod::myUseInstanceCount

protected

const bool makVrv::DtGpuCullingAndLod::myDebugInstancesAppended

staticprotected

std::vector<InstancesOffsetAndNumOfInstances> makVrv::DtGpuCullingAndLod::myInstancesOffsetAndNumInstances

protected

DtGlBuffer* makVrv::DtGpuCullingAndLod::myGpuInstancesOffsetAndNumInstances

protected

int makVrv::DtGpuCullingAndLod::myMaxAtomicCounters

protected

std::string makVrv::DtGpuCullingAndLod::myShaderFolderPath

protected

DtOsgShaderFilesCache* makVrv::DtGpuCullingAndLod::myShaderFilesCache

protected

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

/exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrvOsg/DtGpuCullingAndLod.h

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation