Implement a screen-space ambient occlusion pass. More...

#include <vtkSSAOPass.h>

Inheritance diagram for vtkSSAOPass:

Collaboration diagram for vtkSSAOPass:

Public Types
typedef vtkImageProcessingPass	Superclass

Public Types inherited from vtkImageProcessingPass
typedef vtkOpenGLRenderPass	Superclass

Public Types inherited from vtkOpenGLRenderPass
typedef vtkRenderPass	Superclass

Public Types inherited from vtkRenderPass
typedef vtkObject	Superclass

Public Member Functions
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkSSAOPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	Render (const vtkRenderState *s) override
	Perform rendering according to a render state.

void	ReleaseGraphicsResources (vtkWindow *w) override
	Release graphics resources and ask components to release their own resources.

bool	PreReplaceShaderValues (std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper mapper, vtkProp prop) override
	Pre replace shader values.

bool	PostReplaceShaderValues (std::string &vertexShader, std::string &geometryShader, std::string &fragmentShader, vtkAbstractMapper mapper, vtkProp prop) override
	Post replace shader values.

bool	SetShaderParameters (vtkShaderProgram program, vtkAbstractMapper mapper, vtkProp prop, vtkOpenGLVertexArrayObject VAO=nullptr) override
	Set shader parameters.

virtual void	SetDepthFormat (int)
	Set the format to use for the depth texture vtkTextureObject::Float32 and vtkTextureObject::Fixed32 are supported.


virtual double	GetRadius ()
	Get/Set the SSAO hemisphere radius.

virtual void	SetRadius (double)
	Get/Set the SSAO hemisphere radius.


virtual unsigned int	GetKernelSize ()
	Get/Set the number of samples.

virtual void	SetKernelSize (unsigned int)
	Get/Set the number of samples.


virtual double	GetBias ()
	Get/Set the bias when comparing samples.

virtual void	SetBias (double)
	Get/Set the bias when comparing samples.


virtual bool	GetBlur ()
	Get/Set blurring of the ambient occlusion.

virtual void	SetBlur (bool)
	Get/Set blurring of the ambient occlusion.

virtual void	BlurOn ()
	Get/Set blurring of the ambient occlusion.

virtual void	BlurOff ()
	Get/Set blurring of the ambient occlusion.


virtual double	GetVolumeOpacityThreshold ()
	Get/Set the opacity threshold value used to write depth information for volumes.

virtual void	SetVolumeOpacityThreshold (double)
	Get/Set the opacity threshold value used to write depth information for volumes.


virtual double	GetIntensityScale ()
	Control intensity of darkening.

virtual void	SetIntensityScale (double)
	Control intensity of darkening.


virtual double	GetIntensityShift ()
	Control intensity of darkening.

virtual void	SetIntensityShift (double)
	Control intensity of darkening.

Public Member Functions inherited from vtkImageProcessingPass
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkImageProcessingPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	ReleaseGraphicsResources (vtkWindow *w) override
	Release graphics resources and ask components to release their own resources.

virtual vtkRenderPass *	GetDelegatePass ()
	Delegate for rendering the image to be processed.

virtual void	SetDelegatePass (vtkRenderPass *delegatePass)
	Delegate for rendering the image to be processed.

Public Member Functions inherited from vtkOpenGLRenderPass
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkOpenGLRenderPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

virtual bool	SetShaderParameters (vtkShaderProgram program, vtkAbstractMapper mapper, vtkProp prop, vtkOpenGLVertexArrayObject VAO=nullptr)
	Update the uniforms of the shader program.

virtual vtkMTimeType	GetShaderStageMTime ()
	For multi-stage render passes that need to change shader code during a single pass, use this method to notify a mapper that the shader needs to be rebuilt (rather than reuse the last cached shader.

virtual void	SetActiveDrawBuffers (unsigned int)
	Number of active draw buffers.

virtual unsigned int	GetActiveDrawBuffers ()

Public Member Functions inherited from vtkRenderPass
virtual vtkTypeBool	IsA (const char *type)
	Return 1 if this class is the same type of (or a subclass of) the named class.

vtkRenderPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

virtual void	Render (const vtkRenderState *s)=0
	Perform rendering according to a render state `s`.

virtual void	ReleaseGraphicsResources (vtkWindow *w)
	Release graphics resources and ask components to release their own resources.

virtual int	GetNumberOfRenderedProps ()
	Number of props rendered at the last Render call.

Public Member Functions inherited from vtkObject
	vtkBaseTypeMacro (vtkObject, vtkObjectBase)

virtual void	DebugOn ()
	Turn debugging output on.

virtual void	DebugOff ()
	Turn debugging output off.

bool	GetDebug ()
	Get the value of the debug flag.

void	SetDebug (bool debugFlag)
	Set the value of the debug flag.

virtual void	Modified ()
	Update the modification time for this object.

virtual vtkMTimeType	GetMTime ()
	Return this object's modified time.

void	PrintSelf (ostream &os, vtkIndent indent) override
	Methods invoked by print to print information about the object including superclasses.

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

vtkTypeBool	HasObserver (unsigned long event)

vtkTypeBool	HasObserver (const char *event)

vtkTypeBool	InvokeEvent (unsigned long event)

vtkTypeBool	InvokeEvent (const char *event)

std::string	GetObjectDescription () const override
	The object description printed in messages and PrintSelf output.

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkCommand *	GetCommand (unsigned long tag)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObserver (vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

void	RemoveObservers (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (unsigned long event, vtkCommand *)
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

vtkTypeBool	HasObserver (const char event, vtkCommand )
	Allow people to add/remove/invoke observers (callbacks) to any VTK object.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Overloads to AddObserver that allow developers to add class member functions as callbacks for events.

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)
	Allow user to set the AbortFlagOn() with the return value of the callback method.

vtkTypeBool	InvokeEvent (unsigned long event, void *callData)
	This method invokes an event and return whether the event was aborted or not.

vtkTypeBool	InvokeEvent (const char event, void callData)
	This method invokes an event and return whether the event was aborted or not.

virtual void	SetObjectName (const std::string &objectName)
	Set/get the name of this object for reporting purposes.

virtual std::string	GetObjectName () const
	Set/get the name of this object for reporting purposes.

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const
	Return the class name as a string.

virtual std::string	GetObjectDescription () const
	The object description printed in messages and PrintSelf output.

virtual vtkTypeBool	IsA (const char *name)
	Return 1 if this class is the same type of (or a subclass of) the named class.

virtual vtkIdType	GetNumberOfGenerationsFromBase (const char *name)
	Given the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

virtual void	Delete ()
	Delete a VTK object.

virtual void	FastDelete ()
	Delete a reference to this object.

void	InitializeObjectBase ()

void	Print (ostream &os)
	Print an object to an ostream.

void	Register (vtkObjectBase *o)
	Increase the reference count (mark as used by another object).

virtual void	UnRegister (vtkObjectBase *o)
	Decrease the reference count (release by another object).

int	GetReferenceCount ()
	Return the current reference count of this object.

void	SetReferenceCount (int)
	Sets the reference count.

bool	GetIsInMemkind () const
	A local state flag that remembers whether this object lives in the normal or extended memory space.

virtual void	PrintHeader (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual void	PrintTrailer (ostream &os, vtkIndent indent)
	Methods invoked by print to print information about the object including superclasses.

virtual bool	UsesGarbageCollector () const
	Indicate whether the class uses `vtkGarbageCollector` or not.

Static Public Member Functions
static vtkSSAOPass *	New ()

static vtkTypeBool	IsTypeOf (const char *type)

static vtkSSAOPass *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkImageProcessingPass
static vtkTypeBool	IsTypeOf (const char *type)

static vtkImageProcessingPass *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkOpenGLRenderPass
static vtkTypeBool	IsTypeOf (const char *type)

static vtkOpenGLRenderPass *	SafeDownCast (vtkObjectBase *o)

static vtkInformationObjectBaseVectorKey *	RenderPasses ()
	Key containing information about the current pass.

Static Public Member Functions inherited from vtkRenderPass
static vtkTypeBool	IsTypeOf (const char *type)

static vtkRenderPass *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static vtkObject *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	BreakOnError ()
	This method is called when vtkErrorMacro executes.

static void	SetGlobalWarningDisplay (vtkTypeBool val)
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOn ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static void	GlobalWarningDisplayOff ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

static vtkTypeBool	GetGlobalWarningDisplay ()
	This is a global flag that controls whether any debug, warning or error messages are displayed.

Static Public Member Functions inherited from vtkObjectBase
static vtkTypeBool	IsTypeOf (const char *name)
	Return 1 if this class type is the same type of (or a subclass of) the named class.

static vtkIdType	GetNumberOfGenerationsFromBaseType (const char *name)
	Given a the name of a base class of this class type, return the distance of inheritance between this class type and the named class (how many generations of inheritance are there between this class and the named class).

static vtkObjectBase *	New ()
	Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

static void	SetMemkindDirectory (const char *directoryname)
	The name of a directory, ideally mounted -o dax, to memory map an extended memory space within.

static bool	GetUsingMemkind ()
	A global state flag that controls whether vtkObjects are constructed in the usual way (the default) or within the extended memory space.

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkSSAOPass ()=default

	~vtkSSAOPass () override=default

void	PreRenderProp (vtkProp *prop) override
	Called in PreRender to add the GLDepthMaskOverride information key to volumes, which allows them to write to the depth texture by overriding the value of glDepthMask.

void	PostRenderProp (vtkProp *prop) override
	Called in PostRender to clean the GLDepthMaskOverride information key on volumes.

void	ComputeKernel ()

void	InitializeGraphicsResources (vtkOpenGLRenderWindow *renWin, int w, int h)

void	RenderDelegate (const vtkRenderState *s, int w, int h)

void	RenderSSAO (vtkOpenGLRenderWindow renWin, vtkMatrix4x4 projection, int w, int h)

void	RenderCombine (vtkOpenGLRenderWindow *renWin)

Protected Member Functions inherited from vtkImageProcessingPass
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkImageProcessingPass ()
	Default constructor.

	~vtkImageProcessingPass () override
	Destructor.

void	RenderDelegate (const vtkRenderState s, int width, int height, int newWidth, int newHeight, vtkOpenGLFramebufferObject fbo, vtkTextureObject *target)
	Render delegate with a image of different dimensions than the original one.

Protected Member Functions inherited from vtkOpenGLRenderPass
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkOpenGLRenderPass ()

	~vtkOpenGLRenderPass () override

void	PreRender (const vtkRenderState *s)
	Call before rendering to update the actors' information keys.

virtual void	PreRenderProp (vtkProp *prop)
	Called in PreRender to give a chance to subclasses to set additonal information keys.

void	PostRender (const vtkRenderState *s)
	Call after rendering to clean up the actors' information keys.

virtual void	PostRenderProp (vtkProp *prop)
	Called in PreRender to give a chance to subclasses to clean up information keys.

Protected Member Functions inherited from vtkRenderPass
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkRenderPass ()
	Default constructor.

	~vtkRenderPass () override
	Destructor.

void	UpdateCamera (vtkRenderer *renderer)
	Call UpdateCamera() on Renderer.

void	ClearLights (vtkRenderer *renderer)
	Call ClearLights() on Renderer.

void	UpdateLightGeometry (vtkRenderer *renderer)
	Call UpdateLightGeometry() on Renderer.

void	UpdateLights (vtkRenderer *renderer)
	Call UpdateLights() on Renderer.

void	UpdateGeometry (vtkRenderer renderer, vtkFrameBufferObjectBase fbo=nullptr)
	Call UpdateGeometry() on Renderer.

void	SetLastRenderingUsedDepthPeeling (vtkRenderer *renderer, bool value)
	Modify protected member LastRenderingUsedDepthPeeling on Renderer.

Protected Member Functions inherited from vtkObject
	vtkObject ()

	~vtkObject () override

void	RegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check) override

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=nullptr)
	These methods allow a command to exclusively grab all events.

void	InternalReleaseFocus ()
	These methods allow a command to exclusively grab all events.

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	RegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	UnRegisterInternal (vtkObjectBase *, vtkTypeBool check)

virtual void	ReportReferences (vtkGarbageCollector *)

virtual void	ObjectFinalize ()

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
vtkTextureObject *	ColorTexture = nullptr

vtkTextureObject *	PositionTexture = nullptr

vtkTextureObject *	NormalTexture = nullptr

vtkTextureObject *	SSAOTexture = nullptr

vtkTextureObject *	DepthTexture = nullptr

int	DepthFormat = vtkTextureObject::Float32

vtkOpenGLFramebufferObject *	FrameBufferObject = nullptr

vtkOpenGLQuadHelper *	SSAOQuadHelper = nullptr

vtkOpenGLQuadHelper *	CombineQuadHelper = nullptr

std::vector< float >	Kernel

unsigned int	KernelSize = 32

double	Radius = 0.5

double	Bias = 0.01

bool	Blur = false

double	VolumeOpacityThreshold = 0.9

double	IntensityScale = 1.0

double	IntensityShift = 0.0

Protected Attributes inherited from vtkImageProcessingPass
vtkRenderPass *	DelegatePass

Protected Attributes inherited from vtkOpenGLRenderPass
unsigned int	ActiveDrawBuffers = 0

Protected Attributes inherited from vtkRenderPass
int	NumberOfRenderedProps

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

std::string	ObjectName

Protected Attributes inherited from vtkObjectBase
std::atomic< int32_t >	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Additional Inherited Members
Static Protected Member Functions inherited from vtkObjectBase
static vtkMallocingFunction	GetCurrentMallocFunction ()

static vtkReallocingFunction	GetCurrentReallocFunction ()

static vtkFreeingFunction	GetCurrentFreeFunction ()

static vtkFreeingFunction	GetAlternateFreeFunction ()

Detailed Description

Implement a screen-space ambient occlusion pass.

SSAO darkens some pixels to improve depth perception simulating ambient occlusion in screen space. For each fragment, random samples inside a hemisphere at the fragment position oriented with the normal are tested against other fragments to compute an average occlusion. The number of samples and the radius of the hemisphere are configurables.

See also: vtkRenderPass

Tests:: vtkSSAOPass (Tests)

Definition at line 36 of file vtkSSAOPass.h.

Member Typedef Documentation

◆ Superclass

typedef vtkImageProcessingPass vtkSSAOPass::Superclass

Definition at line 40 of file vtkSSAOPass.h.

Constructor & Destructor Documentation

◆ vtkSSAOPass()

vtkSSAOPass::vtkSSAOPass ( )

protecteddefault

◆ ~vtkSSAOPass()

vtkSSAOPass::~vtkSSAOPass ( )

overrideprotecteddefault

Member Function Documentation

◆ New()

static vtkSSAOPass * vtkSSAOPass::New ( )

static

◆ IsTypeOf()

static vtkTypeBool vtkSSAOPass::IsTypeOf ( const char * type )

static

◆ IsA()

virtual vtkTypeBool vtkSSAOPass::IsA ( const char * name )

virtual

Return 1 if this class is the same type of (or a subclass of) the named class.

Returns 0 otherwise. This method works in combination with vtkTypeMacro found in vtkSetGet.h.

Reimplemented from vtkImageProcessingPass.

◆ SafeDownCast()

static vtkSSAOPass * vtkSSAOPass::SafeDownCast ( vtkObjectBase * o )

static

◆ NewInstanceInternal()

virtual vtkObjectBase * vtkSSAOPass::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkImageProcessingPass.

◆ NewInstance()

vtkSSAOPass * vtkSSAOPass::NewInstance ( ) const

◆ PrintSelf()

void vtkSSAOPass::PrintSelf	(	ostream &	os,
		vtkIndent	indent
	)

overridevirtual

Methods invoked by print to print information about the object including superclasses.

Typically not called by the user (use Print() instead) but used in the hierarchical print process to combine the output of several classes.

Reimplemented from vtkImageProcessingPass.

◆ Render()

void vtkSSAOPass::Render ( const vtkRenderState * s )

overridevirtual

Perform rendering according to a render state.

Implements vtkRenderPass.

◆ ReleaseGraphicsResources()

void vtkSSAOPass::ReleaseGraphicsResources ( vtkWindow * w )

overridevirtual

Release graphics resources and ask components to release their own resources.

Reimplemented from vtkImageProcessingPass.

◆ PreReplaceShaderValues()

bool vtkSSAOPass::PreReplaceShaderValues	(	std::string &	vertexShader,
		std::string &	geometryShader,
		std::string &	fragmentShader,
		vtkAbstractMapper *	mapper,
		vtkProp *	prop
	)

overridevirtual

Pre replace shader values.

Reimplemented from vtkOpenGLRenderPass.

◆ PostReplaceShaderValues()

bool vtkSSAOPass::PostReplaceShaderValues	(	std::string &	vertexShader,
		std::string &	geometryShader,
		std::string &	fragmentShader,
		vtkAbstractMapper *	mapper,
		vtkProp *	prop
	)

overridevirtual

Post replace shader values.

Reimplemented from vtkOpenGLRenderPass.

◆ SetShaderParameters()

bool vtkSSAOPass::SetShaderParameters	(	vtkShaderProgram *	program,
		vtkAbstractMapper *	mapper,
		vtkProp *	prop,
		vtkOpenGLVertexArrayObject *	VAO = `nullptr`
	)

overridevirtual

Set shader parameters.

Set the draw buffers depending on the mapper.

Reimplemented from vtkOpenGLRenderPass.

◆ GetRadius()

virtual double vtkSSAOPass::GetRadius ( )

virtual

Get/Set the SSAO hemisphere radius.

Default is 0.5

◆ SetRadius()

virtual void vtkSSAOPass::SetRadius ( double )

virtual

Get/Set the SSAO hemisphere radius.

Default is 0.5

◆ GetKernelSize()

virtual unsigned int vtkSSAOPass::GetKernelSize ( )

virtual

Get/Set the number of samples.

Default is 32

◆ SetKernelSize()

virtual void vtkSSAOPass::SetKernelSize ( unsigned int )

virtual

Get/Set the number of samples.

Default is 32

◆ GetBias()

virtual double vtkSSAOPass::GetBias ( )

virtual

Get/Set the bias when comparing samples.

Default is 0.01

◆ SetBias()

virtual void vtkSSAOPass::SetBias ( double )

virtual

Get/Set the bias when comparing samples.

Default is 0.01

◆ GetBlur()

virtual bool vtkSSAOPass::GetBlur ( )

virtual

Get/Set blurring of the ambient occlusion.

Blurring can help to improve the result if samples number is low. Default is false

◆ SetBlur()

virtual void vtkSSAOPass::SetBlur ( bool )

virtual

Get/Set blurring of the ambient occlusion.

Blurring can help to improve the result if samples number is low. Default is false

◆ BlurOn()

virtual void vtkSSAOPass::BlurOn ( )

virtual

Get/Set blurring of the ambient occlusion.

Blurring can help to improve the result if samples number is low. Default is false

◆ BlurOff()

virtual void vtkSSAOPass::BlurOff ( )

virtual

Get/Set blurring of the ambient occlusion.

Blurring can help to improve the result if samples number is low. Default is false

◆ SetDepthFormat()

virtual void vtkSSAOPass::SetDepthFormat ( int )

virtual

Set the format to use for the depth texture vtkTextureObject::Float32 and vtkTextureObject::Fixed32 are supported.

◆ GetVolumeOpacityThreshold()

virtual double vtkSSAOPass::GetVolumeOpacityThreshold ( )

virtual

Get/Set the opacity threshold value used to write depth information for volumes.

When the opacity of the current raycast sample reaches this value, the fragment depth is written to the depth buffer which results in SSAO being applied at this location. Default is 0.9

◆ SetVolumeOpacityThreshold()

virtual void vtkSSAOPass::SetVolumeOpacityThreshold ( double )

virtual

Get/Set the opacity threshold value used to write depth information for volumes.

When the opacity of the current raycast sample reaches this value, the fragment depth is written to the depth buffer which results in SSAO being applied at this location. Default is 0.9

◆ GetIntensityScale()

virtual double vtkSSAOPass::GetIntensityScale ( )

virtual

Control intensity of darkening.

Default is 1.0. Larger value causes stronger darkening. 0 means no darkening at all.

◆ SetIntensityScale()

virtual void vtkSSAOPass::SetIntensityScale ( double )

virtual

Control intensity of darkening.

Default is 1.0. Larger value causes stronger darkening. 0 means no darkening at all.

◆ GetIntensityShift()

virtual double vtkSSAOPass::GetIntensityShift ( )

virtual

Control intensity of darkening.

Range is between 0.0 and 1.0. Default is 0.0. Larger value prevents darkening lightly occluded regions, which can be particularly noticeable when IntensityScale is set to a higher value.

◆ SetIntensityShift()

virtual void vtkSSAOPass::SetIntensityShift ( double )

virtual

Control intensity of darkening.

Range is between 0.0 and 1.0. Default is 0.0. Larger value prevents darkening lightly occluded regions, which can be particularly noticeable when IntensityScale is set to a higher value.

◆ PreRenderProp()

void vtkSSAOPass::PreRenderProp ( vtkProp * prop )

overrideprotectedvirtual

Called in PreRender to add the GLDepthMaskOverride information key to volumes, which allows them to write to the depth texture by overriding the value of glDepthMask.

Reimplemented from vtkOpenGLRenderPass.

◆ PostRenderProp()

void vtkSSAOPass::PostRenderProp ( vtkProp * prop )

overrideprotectedvirtual

Called in PostRender to clean the GLDepthMaskOverride information key on volumes.

Reimplemented from vtkOpenGLRenderPass.

◆ ComputeKernel()

void vtkSSAOPass::ComputeKernel ( )

protected

◆ InitializeGraphicsResources()

void vtkSSAOPass::InitializeGraphicsResources	(	vtkOpenGLRenderWindow *	renWin,
		int	w,
		int	h
	)

protected

◆ RenderDelegate()

void vtkSSAOPass::RenderDelegate	(	const vtkRenderState *	s,
		int	w,
		int	h
	)

protected

◆ RenderSSAO()

void vtkSSAOPass::RenderSSAO	(	vtkOpenGLRenderWindow *	renWin,
		vtkMatrix4x4 *	projection,
		int	w,
		int	h
	)

protected

◆ RenderCombine()

void vtkSSAOPass::RenderCombine ( vtkOpenGLRenderWindow * renWin )

protected

Member Data Documentation

◆ ColorTexture

vtkTextureObject* vtkSSAOPass::ColorTexture = nullptr

protected

Definition at line 167 of file vtkSSAOPass.h.

◆ PositionTexture

vtkTextureObject* vtkSSAOPass::PositionTexture = nullptr

protected

Definition at line 168 of file vtkSSAOPass.h.

◆ NormalTexture

vtkTextureObject* vtkSSAOPass::NormalTexture = nullptr

protected

Definition at line 169 of file vtkSSAOPass.h.

◆ SSAOTexture

vtkTextureObject* vtkSSAOPass::SSAOTexture = nullptr

protected

Definition at line 170 of file vtkSSAOPass.h.

◆ DepthTexture

vtkTextureObject* vtkSSAOPass::DepthTexture = nullptr

protected

Definition at line 171 of file vtkSSAOPass.h.

◆ DepthFormat

int vtkSSAOPass::DepthFormat = vtkTextureObject::Float32

protected

Definition at line 173 of file vtkSSAOPass.h.

◆ FrameBufferObject

vtkOpenGLFramebufferObject* vtkSSAOPass::FrameBufferObject = nullptr

protected

Definition at line 175 of file vtkSSAOPass.h.

◆ SSAOQuadHelper

vtkOpenGLQuadHelper* vtkSSAOPass::SSAOQuadHelper = nullptr

protected

Definition at line 177 of file vtkSSAOPass.h.

◆ CombineQuadHelper

vtkOpenGLQuadHelper* vtkSSAOPass::CombineQuadHelper = nullptr

protected

Definition at line 178 of file vtkSSAOPass.h.

◆ Kernel

std::vector<float> vtkSSAOPass::Kernel

protected

Definition at line 180 of file vtkSSAOPass.h.

◆ KernelSize

unsigned int vtkSSAOPass::KernelSize = 32

protected

Definition at line 181 of file vtkSSAOPass.h.

◆ Radius

double vtkSSAOPass::Radius = 0.5

protected

Definition at line 182 of file vtkSSAOPass.h.

◆ Bias

double vtkSSAOPass::Bias = 0.01

protected

Definition at line 183 of file vtkSSAOPass.h.

◆ Blur

bool vtkSSAOPass::Blur = false

protected

Definition at line 184 of file vtkSSAOPass.h.

◆ VolumeOpacityThreshold

double vtkSSAOPass::VolumeOpacityThreshold = 0.9

protected

Definition at line 186 of file vtkSSAOPass.h.

◆ IntensityScale

double vtkSSAOPass::IntensityScale = 1.0

protected

Definition at line 188 of file vtkSSAOPass.h.

◆ IntensityShift

double vtkSSAOPass::IntensityShift = 0.0

protected

Definition at line 189 of file vtkSSAOPass.h.

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

Rendering/OpenGL2/vtkSSAOPass.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Superclass

Constructor & Destructor Documentation

◆ vtkSSAOPass()

◆ ~vtkSSAOPass()

Member Function Documentation

◆ New()

◆ IsTypeOf()

◆ IsA()

◆ SafeDownCast()

◆ NewInstanceInternal()

◆ NewInstance()

◆ PrintSelf()

◆ Render()

◆ ReleaseGraphicsResources()

◆ PreReplaceShaderValues()

◆ PostReplaceShaderValues()

◆ SetShaderParameters()

◆ GetRadius()

◆ SetRadius()

◆ GetKernelSize()

◆ SetKernelSize()

◆ GetBias()

◆ SetBias()

◆ GetBlur()

◆ SetBlur()

◆ BlurOn()

◆ BlurOff()

◆ SetDepthFormat()

◆ GetVolumeOpacityThreshold()

◆ SetVolumeOpacityThreshold()

◆ GetIntensityScale()

◆ SetIntensityScale()

◆ GetIntensityShift()

◆ SetIntensityShift()

◆ PreRenderProp()

◆ PostRenderProp()

◆ ComputeKernel()

◆ InitializeGraphicsResources()

◆ RenderDelegate()

◆ RenderSSAO()

◆ RenderCombine()

Member Data Documentation

◆ ColorTexture

◆ PositionTexture

◆ NormalTexture

◆ SSAOTexture

◆ DepthTexture

◆ DepthFormat

◆ FrameBufferObject

◆ SSAOQuadHelper

◆ CombineQuadHelper

◆ Kernel

◆ KernelSize

◆ Radius

◆ Bias

◆ Blur

◆ VolumeOpacityThreshold

◆ IntensityScale

◆ IntensityShift