Class defining the list of layers. More...

#include <OpenGl_LayerList.hxx>

Data Structures
class	OpenGl_LayerStack
	Stack of references to existing layers of predefined maximum size. More...

class	OpenGl_OpaqueFilter
	Filter of TKOpenGl elements for processing only shading geometry and for collecting number of skipped elements to an external counter. More...

class	OpenGl_TransparentFilter
	Filter of TKOpenGl elements for keeping only shading geometry with transparency. More...

Public Member Functions
	OpenGl_LayerList (const Standard_Integer theNbPriorities)
	Constructor. More...

virtual	~OpenGl_LayerList ()
	Destructor. More...

Standard_Integer	NbPriorities () const
	Method returns the number of available priorities. More...

Standard_Integer	NbStructures () const
	Number of displayed structures. More...

Standard_Integer	NbImmediateStructures () const
	Return number of structures within immediate layers. More...

void	AddLayer (const Graphic3d_ZLayerId theLayerId)
	Insert a new layer with id. More...

void	RemoveLayer (const Graphic3d_ZLayerId theLayerId)
	Remove layer by its id. More...

void	AddStructure (const OpenGl_Structure *theStruct, const Graphic3d_ZLayerId theLayerId, const Standard_Integer thePriority, Standard_Boolean isForChangePriority=Standard_False)
	Add structure to list with given priority. The structure will be inserted to specified layer. If the layer isn't found, the structure will be put to default bottom-level layer. More...

void	RemoveStructure (const OpenGl_Structure *theStructure)
	Remove structure from structure list and return its previous priority. More...

void	ChangeLayer (const OpenGl_Structure *theStructure, const Graphic3d_ZLayerId theOldLayerId, const Graphic3d_ZLayerId theNewLayerId)
	Change structure z layer If the new layer is not presented, the structure will be displayed in default z layer. More...

void	ChangePriority (const OpenGl_Structure *theStructure, const Graphic3d_ZLayerId theLayerId, const Standard_Integer theNewPriority)
	Changes structure priority within its ZLayer. More...

OpenGl_Layer &	Layer (const Graphic3d_ZLayerId theLayerId)
	Returns reference to the layer with given ID. More...

const OpenGl_Layer &	Layer (const Graphic3d_ZLayerId theLayerId) const
	Returns reference to the layer with given ID. More...

void	SetLayerSettings (const Graphic3d_ZLayerId theLayerId, const Graphic3d_ZLayerSettings &theSettings)
	Assign new settings to the layer. More...

void	UpdateCulling (const Handle< OpenGl_Workspace > &theWorkspace, const Standard_Boolean theToDrawImmediate)
	Update culling state - should be called before rendering. More...

void	Render (const Handle< OpenGl_Workspace > &theWorkspace, const Standard_Boolean theToDrawImmediate, const OpenGl_LayerFilter theLayersToProcess, OpenGl_FrameBuffer theReadDrawFbo, OpenGl_FrameBuffer theOitAccumFbo) const
	Render this element. More...

const OpenGl_SequenceOfLayers &	Layers () const
	Returns the set of OpenGL Z-layers. More...

const OpenGl_LayerSeqIds &	LayerIDs () const
	Returns the map of Z-layer IDs to indexes. More...

void	InvalidateBVHData (const Graphic3d_ZLayerId theLayerId)
	Marks BVH tree for given priority list as dirty and marks primitive set for rebuild. More...

Standard_Size	ModificationStateOfRaytracable () const
	Returns structure modification state (for ray-tracing). More...

const Handle< Select3D_BVHBuilder3d > &	FrustumCullingBVHBuilder () const
	Returns BVH tree builder for frustom culling. More...

void	SetFrustumCullingBVHBuilder (const Handle< Select3D_BVHBuilder3d > &theBuilder)
	Assigns BVH tree builder for frustom culling. More...

Protected Member Functions
void	renderTransparent (const Handle< OpenGl_Workspace > &theWorkspace, OpenGl_LayerStack::iterator &theLayerIter, const OpenGl_GlobalLayerSettings &theGlobalSettings, OpenGl_FrameBuffer theReadDrawFbo, OpenGl_FrameBuffer theOitAccumFbo) const
	Render transparent objects using blending operator. Additional accumulation framebuffer is used for blended order-independent transparency algorithm. It should support floating-point color components and share depth with main reading/drawing framebuffer. More...

Protected Attributes
OpenGl_SequenceOfLayers	myLayers

OpenGl_LayerSeqIds	myLayerIds

Handle< Select3D_BVHBuilder3d >	myBVHBuilder
	BVH tree builder for frustom culling. More...

Standard_Integer	myDefaultLayerIndex
	index of Graphic3d_ZLayerId_Default layer in myLayers sequence More...

Standard_Integer	myNbPriorities

Standard_Integer	myNbStructures

Standard_Integer	myImmediateNbStructures
	number of structures within immediate layers More...

Standard_Size	myModifStateOfRaytraceable

OpenGl_LayerStack	myTransparentToProcess
	Collection of references to layers with transparency gathered during rendering pass. More...

Handle< OpenGl_OpaqueFilter >	myRenderOpaqueFilter
	rendering filter for opaque drawing pass (blended OIT). More...

Handle< OpenGl_TransparentFilter >	myRenderTranspFilter
	rendering filter for transparency drawing pass (blended OIT). More...

Detailed Description

Class defining the list of layers.

Constructor & Destructor Documentation

◆ OpenGl_LayerList()

OpenGl_LayerList::OpenGl_LayerList ( const Standard_Integer theNbPriorities )

Constructor.

◆ ~OpenGl_LayerList()

virtual OpenGl_LayerList::~OpenGl_LayerList ( )

virtual

Destructor.

Member Function Documentation

◆ AddLayer()

void OpenGl_LayerList::AddLayer ( const Graphic3d_ZLayerId theLayerId )

Insert a new layer with id.

◆ AddStructure()

void OpenGl_LayerList::AddStructure	(	const OpenGl_Structure *	theStruct,
		const Graphic3d_ZLayerId	theLayerId,
		const Standard_Integer	thePriority,
		Standard_Boolean	isForChangePriority = `Standard_False`
	)

Add structure to list with given priority. The structure will be inserted to specified layer. If the layer isn't found, the structure will be put to default bottom-level layer.

◆ ChangeLayer()

void OpenGl_LayerList::ChangeLayer	(	const OpenGl_Structure *	theStructure,
		const Graphic3d_ZLayerId	theOldLayerId,
		const Graphic3d_ZLayerId	theNewLayerId
	)

Change structure z layer If the new layer is not presented, the structure will be displayed in default z layer.

◆ ChangePriority()

void OpenGl_LayerList::ChangePriority	(	const OpenGl_Structure *	theStructure,
		const Graphic3d_ZLayerId	theLayerId,
		const Standard_Integer	theNewPriority
	)

Changes structure priority within its ZLayer.

◆ FrustumCullingBVHBuilder()

const Handle< Select3D_BVHBuilder3d >& OpenGl_LayerList::FrustumCullingBVHBuilder ( ) const

inline

Returns BVH tree builder for frustom culling.

◆ InvalidateBVHData()

void OpenGl_LayerList::InvalidateBVHData ( const Graphic3d_ZLayerId theLayerId )

Marks BVH tree for given priority list as dirty and marks primitive set for rebuild.

◆ Layer() [1/2]

OpenGl_Layer& OpenGl_LayerList::Layer ( const Graphic3d_ZLayerId theLayerId )

Returns reference to the layer with given ID.

◆ Layer() [2/2]

const OpenGl_Layer& OpenGl_LayerList::Layer ( const Graphic3d_ZLayerId theLayerId ) const

Returns reference to the layer with given ID.

◆ LayerIDs()

const OpenGl_LayerSeqIds& OpenGl_LayerList::LayerIDs ( ) const

inline

Returns the map of Z-layer IDs to indexes.

◆ Layers()

const OpenGl_SequenceOfLayers& OpenGl_LayerList::Layers ( ) const

inline

Returns the set of OpenGL Z-layers.

◆ ModificationStateOfRaytracable()

Standard_Size OpenGl_LayerList::ModificationStateOfRaytracable ( ) const

inline

Returns structure modification state (for ray-tracing).

◆ NbImmediateStructures()

Standard_Integer OpenGl_LayerList::NbImmediateStructures ( ) const

inline

Return number of structures within immediate layers.

◆ NbPriorities()

Standard_Integer OpenGl_LayerList::NbPriorities ( ) const

inline

Method returns the number of available priorities.

◆ NbStructures()

Standard_Integer OpenGl_LayerList::NbStructures ( ) const

inline

Number of displayed structures.

◆ RemoveLayer()

void OpenGl_LayerList::RemoveLayer ( const Graphic3d_ZLayerId theLayerId )

Remove layer by its id.

◆ RemoveStructure()

void OpenGl_LayerList::RemoveStructure ( const OpenGl_Structure * theStructure )

Remove structure from structure list and return its previous priority.

◆ Render()

void OpenGl_LayerList::Render	(	const Handle< OpenGl_Workspace > &	theWorkspace,
		const Standard_Boolean	theToDrawImmediate,
		const OpenGl_LayerFilter	theLayersToProcess,
		OpenGl_FrameBuffer *	theReadDrawFbo,
		OpenGl_FrameBuffer *	theOitAccumFbo
	)		const

Render this element.

◆ renderTransparent()

void OpenGl_LayerList::renderTransparent	(	const Handle< OpenGl_Workspace > &	theWorkspace,
		OpenGl_LayerStack::iterator &	theLayerIter,
		const OpenGl_GlobalLayerSettings &	theGlobalSettings,
		OpenGl_FrameBuffer *	theReadDrawFbo,
		OpenGl_FrameBuffer *	theOitAccumFbo
	)		const

protected

Render transparent objects using blending operator. Additional accumulation framebuffer is used for blended order-independent transparency algorithm. It should support floating-point color components and share depth with main reading/drawing framebuffer.

Parameters

theWorkspace	[in] the currently used workspace for rendering.
theLayerIter	[in/out] the current iterator of transparent layers to process.
theGlobalSettings	[in] the set of global settings used for rendering.
theReadDrawFbo	[in] the framebuffer for reading depth and writing final color.
theOitAccumFbo	[in] the framebuffer for accumulating color and coverage for OIT process.

◆ SetFrustumCullingBVHBuilder()

void OpenGl_LayerList::SetFrustumCullingBVHBuilder ( const Handle< Select3D_BVHBuilder3d > & theBuilder )

Assigns BVH tree builder for frustom culling.

◆ SetLayerSettings()

void OpenGl_LayerList::SetLayerSettings	(	const Graphic3d_ZLayerId	theLayerId,
		const Graphic3d_ZLayerSettings &	theSettings
	)

Assign new settings to the layer.

◆ UpdateCulling()

void OpenGl_LayerList::UpdateCulling	(	const Handle< OpenGl_Workspace > &	theWorkspace,
		const Standard_Boolean	theToDrawImmediate
	)

Update culling state - should be called before rendering.

Field Documentation

◆ myBVHBuilder

Handle< Select3D_BVHBuilder3d > OpenGl_LayerList::myBVHBuilder

protected

BVH tree builder for frustom culling.

◆ myDefaultLayerIndex

Standard_Integer OpenGl_LayerList::myDefaultLayerIndex

protected

index of Graphic3d_ZLayerId_Default layer in myLayers sequence

◆ myImmediateNbStructures

Standard_Integer OpenGl_LayerList::myImmediateNbStructures

protected

number of structures within immediate layers

◆ myLayerIds

OpenGl_LayerSeqIds OpenGl_LayerList::myLayerIds

protected

◆ myLayers

OpenGl_SequenceOfLayers OpenGl_LayerList::myLayers

protected

◆ myModifStateOfRaytraceable

Standard_Size OpenGl_LayerList::myModifStateOfRaytraceable

mutableprotected

◆ myNbPriorities

Standard_Integer OpenGl_LayerList::myNbPriorities

protected

◆ myNbStructures

Standard_Integer OpenGl_LayerList::myNbStructures

protected

◆ myRenderOpaqueFilter

Handle< OpenGl_OpaqueFilter > OpenGl_LayerList::myRenderOpaqueFilter

protected

rendering filter for opaque drawing pass (blended OIT).

◆ myRenderTranspFilter

Handle< OpenGl_TransparentFilter > OpenGl_LayerList::myRenderTranspFilter

protected

rendering filter for transparency drawing pass (blended OIT).

◆ myTransparentToProcess

OpenGl_LayerStack OpenGl_LayerList::myTransparentToProcess

mutableprotected

Collection of references to layers with transparency gathered during rendering pass.

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

OpenGl_LayerList.hxx

Data Structures

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ OpenGl_LayerList()

◆ ~OpenGl_LayerList()

Member Function Documentation

◆ AddLayer()

◆ AddStructure()

◆ ChangeLayer()

◆ ChangePriority()

◆ FrustumCullingBVHBuilder()

◆ InvalidateBVHData()

◆ Layer() [1/2]

◆ Layer() [2/2]

◆ LayerIDs()

◆ Layers()

◆ ModificationStateOfRaytracable()

◆ NbImmediateStructures()

◆ NbPriorities()

◆ NbStructures()

◆ RemoveLayer()

◆ RemoveStructure()

◆ Render()

◆ renderTransparent()

◆ SetFrustumCullingBVHBuilder()

◆ SetLayerSettings()

◆ UpdateCulling()

Field Documentation

◆ myBVHBuilder

◆ myDefaultLayerIndex

◆ myImmediateNbStructures

◆ myLayerIds

◆ myLayers

◆ myModifStateOfRaytraceable

◆ myNbPriorities

◆ myNbStructures

◆ myRenderOpaqueFilter

◆ myRenderTranspFilter

◆ myTransparentToProcess