Implement a post-processing Gaussian blur render pass. More...

#include <vtkGaussianBlurPass.h>

Inheritance diagram for vtkGaussianBlurPass:

Collaboration diagram for vtkGaussianBlurPass:

Public Types
typedef vtkImageProcessingPass	Superclass

typedef vtkImageProcessingPass	Superclass

Public Types inherited from vtkImageProcessingPass
typedef vtkRenderPass	Superclass

typedef vtkRenderPass	Superclass

Public Types inherited from vtkRenderPass
typedef vtkObject	Superclass

typedef vtkObject	Superclass

Public Types inherited from vtkObject
typedef vtkObjectBase	Superclass

Public Member Functions
virtual int	IsA (const char *type)

vtkGaussianBlurPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

void	ReleaseGraphicsResources (vtkWindow *w)

virtual int	IsA (const char *type)

vtkGaussianBlurPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

void	ReleaseGraphicsResources (vtkWindow *w)


virtual void	Render (const vtkRenderState *s)


virtual void	Render (const vtkRenderState *s)

Public Member Functions inherited from vtkImageProcessingPass
vtkImageProcessingPass *	NewInstance () const

vtkImageProcessingPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

void	ReleaseGraphicsResources (vtkWindow *w)

virtual vtkRenderPass *	GetDelegatePass ()

virtual void	SetDelegatePass (vtkRenderPass *delegatePass)

virtual vtkRenderPass *	GetDelegatePass ()

virtual void	SetDelegatePass (vtkRenderPass *delegatePass)

Public Member Functions inherited from vtkRenderPass
vtkRenderPass *	NewInstance () const

vtkRenderPass *	NewInstance () const

void	PrintSelf (ostream &os, vtkIndent indent)

virtual int	GetNumberOfRenderedProps ()

virtual int	GetNumberOfRenderedProps ()

Public Member Functions inherited from vtkObject
vtkObject *	NewInstance () const

virtual void	DebugOn ()

virtual void	DebugOff ()

bool	GetDebug ()

void	SetDebug (bool debugFlag)

virtual void	Modified ()

virtual unsigned long	GetMTime ()

unsigned long	AddObserver (unsigned long event, vtkCommand *, float priority=0.0f)

unsigned long	AddObserver (const char event, vtkCommand , float priority=0.0f)

vtkCommand *	GetCommand (unsigned long tag)

void	RemoveObserver (vtkCommand *)

void	RemoveObservers (unsigned long event, vtkCommand *)

void	RemoveObservers (const char event, vtkCommand )

int	HasObserver (unsigned long event, vtkCommand *)

int	HasObserver (const char event, vtkCommand )

void	RemoveObserver (unsigned long tag)

void	RemoveObservers (unsigned long event)

void	RemoveObservers (const char *event)

void	RemoveAllObservers ()

int	HasObserver (unsigned long event)

int	HasObserver (const char *event)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::*callback)(), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, void(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

template<class U , class T >
unsigned long	AddObserver (unsigned long event, U observer, bool(T::callback)(vtkObject , unsigned long, void *), float priority=0.0f)

int	InvokeEvent (unsigned long event, void *callData)

int	InvokeEvent (const char event, void callData)

int	InvokeEvent (unsigned long event)

int	InvokeEvent (const char *event)

Public Member Functions inherited from vtkObjectBase
const char *	GetClassName () const

virtual void	Delete ()

virtual void	FastDelete ()

void	Print (ostream &os)

virtual void	Register (vtkObjectBase *o)

virtual void	UnRegister (vtkObjectBase *o)

void	SetReferenceCount (int)

void	PrintRevisions (ostream &)

virtual void	PrintHeader (ostream &os, vtkIndent indent)

virtual void	PrintTrailer (ostream &os, vtkIndent indent)

int	GetReferenceCount ()

Static Public Member Functions
static vtkGaussianBlurPass *	New ()

static int	IsTypeOf (const char *type)

static vtkGaussianBlurPass *	SafeDownCast (vtkObjectBase *o)

static vtkGaussianBlurPass *	New ()

static int	IsTypeOf (const char *type)

static vtkGaussianBlurPass *	SafeDownCast (vtkObjectBase *o)

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

static vtkImageProcessingPass *	SafeDownCast (vtkObjectBase *o)

static int	IsTypeOf (const char *type)

static vtkImageProcessingPass *	SafeDownCast (vtkObjectBase *o)

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

static vtkRenderPass *	SafeDownCast (vtkObjectBase *o)

static int	IsTypeOf (const char *type)

static vtkRenderPass *	SafeDownCast (vtkObjectBase *o)

Static Public Member Functions inherited from vtkObject
static int	IsTypeOf (const char *type)

static vtkObject *	SafeDownCast (vtkObjectBase *o)

static vtkObject *	New ()

static void	BreakOnError ()

static void	SetGlobalWarningDisplay (int val)

static void	GlobalWarningDisplayOn ()

static void	GlobalWarningDisplayOff ()

static int	GetGlobalWarningDisplay ()

Static Public Member Functions inherited from vtkObjectBase
static int	IsTypeOf (const char *name)

static vtkObjectBase *	New ()

Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const

	vtkGaussianBlurPass ()

virtual	~vtkGaussianBlurPass ()

virtual vtkObjectBase *	NewInstanceInternal () const

	vtkGaussianBlurPass ()

virtual	~vtkGaussianBlurPass ()

Protected Member Functions inherited from vtkImageProcessingPass
	vtkImageProcessingPass ()

virtual	~vtkImageProcessingPass ()

	vtkImageProcessingPass ()

virtual	~vtkImageProcessingPass ()

void	RenderDelegate (const vtkRenderState s, int width, int height, int newWidth, int newHeight, vtkFrameBufferObject fbo, vtkTextureObject *target)

void	RenderDelegate (const vtkRenderState s, int width, int height, int newWidth, int newHeight, vtkFrameBufferObject fbo, vtkTextureObject *target)

Protected Member Functions inherited from vtkRenderPass
	vtkRenderPass ()

virtual	~vtkRenderPass ()

void	UpdateCamera (vtkRenderer *renderer)

void	ClearLights (vtkRenderer *renderer)

void	UpdateLightGeometry (vtkRenderer *renderer)

void	UpdateLights (vtkRenderer *renderer)

void	UpdateGeometry (vtkRenderer *renderer)

	vtkRenderPass ()

virtual	~vtkRenderPass ()

void	UpdateCamera (vtkRenderer *renderer)

void	ClearLights (vtkRenderer *renderer)

void	UpdateLightGeometry (vtkRenderer *renderer)

void	UpdateLights (vtkRenderer *renderer)

void	UpdateGeometry (vtkRenderer *renderer)

void	SetLastRenderingUsedDepthPeeling (vtkRenderer *renderer, bool value)

void	SetLastRenderingUsedDepthPeeling (vtkRenderer *renderer, bool value)

Protected Member Functions inherited from vtkObject
	vtkObject ()

virtual	~vtkObject ()

virtual void	RegisterInternal (vtkObjectBase *, int check)

virtual void	UnRegisterInternal (vtkObjectBase *, int check)

void	InternalGrabFocus (vtkCommand mouseEvents, vtkCommand keypressEvents=NULL)

void	InternalReleaseFocus ()

Protected Member Functions inherited from vtkObjectBase
	vtkObjectBase ()

virtual	~vtkObjectBase ()

virtual void	CollectRevisions (ostream &)

virtual void	ReportReferences (vtkGarbageCollector *)

	vtkObjectBase (const vtkObjectBase &)

void	operator= (const vtkObjectBase &)

Protected Attributes
bool	Supported

bool	SupportProbed

vtkOpenGLHelper *	BlurProgram


vtkFrameBufferObject *	FrameBufferObject

vtkTextureObject *	Pass1

vtkTextureObject *	Pass2

vtkShaderProgram2 *	BlurProgram

Protected Attributes inherited from vtkImageProcessingPass
vtkRenderPass *	DelegatePass

Protected Attributes inherited from vtkRenderPass
int	NumberOfRenderedProps

Protected Attributes inherited from vtkObject
bool	Debug

vtkTimeStamp	MTime

vtkSubjectHelper *	SubjectHelper

Protected Attributes inherited from vtkObjectBase
vtkAtomicInt32	ReferenceCount

vtkWeakPointerBase **	WeakPointers

Detailed Description

Implement a post-processing Gaussian blur render pass.

Blur the image renderered by its delegate. Blurring uses a Gaussian low-pass filter with a 5x5 kernel.

This pass expects an initialized depth buffer and color buffer. Initialized buffers means they have been cleared with farest z-value and background color/gradient/transparent color. An opaque pass may have been performed right after the initialization.

The delegate is used once.

Its delegate is usually set to a vtkCameraPass or to a post-processing pass.

This pass requires a OpenGL context that supports texture objects (TO), framebuffer objects (FBO) and GLSL. If not, it will emit an error message and will render its delegate and return.

Implementation:: As the filter is separable, it first blurs the image horizontally and then vertically. This reduces the number of texture sampling to 5 per pass. In addition, as texture sampling can already blend texel values in linear mode, by adjusting the texture coordinate accordingly, only 3 texture sampling are actually necessary. Reference: OpenGL Bloom Toturial by Philip Rideout, section Exploit Hardware Filtering http://prideout.net/bloom/index.php#Sneaky

See also: vtkRenderPass

Blur the image renderered by its delegate. Blurring uses a Gaussian low-pass filter with a 5x5 kernel.

This pass expects an initialized depth buffer and color buffer. Initialized buffers means they have been cleared with farest z-value and background color/gradient/transparent color. An opaque pass may have been performed right after the initialization.

The delegate is used once.

Its delegate is usually set to a vtkCameraPass or to a post-processing pass.

This pass requires a OpenGL context that supports texture objects (TO), framebuffer objects (FBO) and GLSL. If not, it will emit an error message and will render its delegate and return.

Implementation:: As the filter is separable, it first blurs the image horizontally and then vertically. This reduces the number of texture sampling to 5 per pass. In addition, as texture sampling can already blend texel values in linear mode, by adjusting the texture coordinate accordingly, only 3 texture sampling are actually necessary. Reference: OpenGL Bloom Toturial by Philip Rideout, section Exploit Hardware Filtering http://prideout.net/bloom/index.php#Sneaky

See also: vtkRenderPass

Tests:: vtkGaussianBlurPass (Tests)

Definition at line 61 of file vtkGaussianBlurPass.h.

Member Typedef Documentation

typedef vtkImageProcessingPass vtkGaussianBlurPass::Superclass

Definition at line 65 of file vtkGaussianBlurPass.h.

typedef vtkImageProcessingPass vtkGaussianBlurPass::Superclass

Definition at line 67 of file vtkGaussianBlurPass.h.

Constructor & Destructor Documentation

vtkGaussianBlurPass::vtkGaussianBlurPass ( )

protected

Default constructor. DelegatePass is set to NULL.

virtual vtkGaussianBlurPass::~vtkGaussianBlurPass ( )

protectedvirtual

Destructor.

vtkGaussianBlurPass::vtkGaussianBlurPass ( )

protected

Default constructor. DelegatePass is set to NULL.

virtual vtkGaussianBlurPass::~vtkGaussianBlurPass ( )

protectedvirtual

Destructor.

Member Function Documentation

static vtkGaussianBlurPass* vtkGaussianBlurPass::New ( )

static

static int vtkGaussianBlurPass::IsTypeOf ( const char * type )

static

virtual int vtkGaussianBlurPass::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.

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

static

virtual vtkObjectBase* vtkGaussianBlurPass::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkImageProcessingPass.

vtkGaussianBlurPass* vtkGaussianBlurPass::NewInstance ( ) const

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

virtual

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 vtkObject.

virtual void vtkGaussianBlurPass::Render ( const vtkRenderState * s )

virtual

Perform rendering according to a render state s.

Precondition: s_exists: s!=0

Implements vtkRenderPass.

void vtkGaussianBlurPass::ReleaseGraphicsResources ( vtkWindow * w )

virtual

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

Precondition: w_exists: w!=0

Reimplemented from vtkRenderPass.

static vtkGaussianBlurPass* vtkGaussianBlurPass::New ( )

static

static int vtkGaussianBlurPass::IsTypeOf ( const char * type )

static

virtual int vtkGaussianBlurPass::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.

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

static

virtual vtkObjectBase* vtkGaussianBlurPass::NewInstanceInternal ( ) const

protectedvirtual

Reimplemented from vtkImageProcessingPass.

vtkGaussianBlurPass* vtkGaussianBlurPass::NewInstance ( ) const

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

virtual

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.

virtual void vtkGaussianBlurPass::Render ( const vtkRenderState * s )

virtual

Perform rendering according to a render state s.

Precondition: s_exists: s!=0

Implements vtkRenderPass.

void vtkGaussianBlurPass::ReleaseGraphicsResources ( vtkWindow * w )

virtual

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

Precondition: w_exists: w!=0

Reimplemented from vtkImageProcessingPass.

Member Data Documentation

vtkFrameBufferObject * vtkGaussianBlurPass::FrameBufferObject

protected

Graphics resources.

Definition at line 89 of file vtkGaussianBlurPass.h.

vtkTextureObject * vtkGaussianBlurPass::Pass1

protected

Graphics resources.

Definition at line 90 of file vtkGaussianBlurPass.h.

vtkTextureObject * vtkGaussianBlurPass::Pass2

protected

Graphics resources.

Definition at line 91 of file vtkGaussianBlurPass.h.

vtkShaderProgram2* vtkGaussianBlurPass::BlurProgram

protected

Graphics resources.

Definition at line 92 of file vtkGaussianBlurPass.h.

bool vtkGaussianBlurPass::Supported

protected

Definition at line 95 of file vtkGaussianBlurPass.h.

bool vtkGaussianBlurPass::SupportProbed

protected

Definition at line 96 of file vtkGaussianBlurPass.h.

vtkOpenGLHelper* vtkGaussianBlurPass::BlurProgram

protected

Definition at line 97 of file vtkGaussianBlurPass.h.

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

/home/boeckb/code/depot/group-kitware/vtk/build-release/Utilities/Doxygen/dox/Rendering/OpenGL/vtkGaussianBlurPass.h

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation