internal class which encapsulates OpenGL frame buffer object. Not to be used directly. More...

#include <vtkFrameBufferObject.h>

Inheritance diagram for vtkFrameBufferObject:

Collaboration diagram for vtkFrameBufferObject:

Public Types
typedef vtkObject	Superclass
Public Member Functions
virtual int	IsA (const char *type)
vtkFrameBufferObject *	NewInstance () const
void	PrintSelf (ostream &os, vtkIndent indent)
void	Bind ()
void	UnBind ()
void	SetColorBuffer (unsigned int index, vtkTextureObject *texture, unsigned int zslice=0)
vtkTextureObject *	GetColorBuffer (unsigned int index)
void	RemoveColorBuffer (unsigned int index)
void	RemoveAllColorBuffers ()
unsigned int	GetMaximumNumberOfActiveTargets ()
unsigned int	GetMaximumNumberOfRenderTargets ()

void	SetContext (vtkRenderWindow *context)
vtkRenderWindow *	GetContext ()

bool	Start (int width, int height, bool shaderSupportsTextureInt)
bool	StartNonOrtho (int width, int height, bool shaderSupportsTextureInt)

void	RenderQuad (int minX, int maxX, int minY, int maxY)

void	SetActiveBuffer (unsigned int index)

void	SetActiveBuffers (int numbuffers, unsigned int indices[])

void	SetDepthBuffer (vtkTextureObject *depthTexture)
void	RemoveDepthBuffer ()

virtual void	SetDepthBufferNeeded (bool)
virtual bool	GetDepthBufferNeeded ()

void	SetNumberOfRenderTargets (unsigned int)
virtual unsigned int	GetNumberOfRenderTargets ()

virtual int *	GetLastSize ()
virtual void	GetLastSize (int &, int &)
virtual void	GetLastSize (int[2])
Static Public Member Functions
static vtkFrameBufferObject *	New ()
static int	IsTypeOf (const char *type)
static vtkFrameBufferObject *	SafeDownCast (vtkObjectBase *o)
static bool	IsSupported (vtkRenderWindow *renWin)
Protected Member Functions
virtual vtkObjectBase *	NewInstanceInternal () const
void	CheckFrameBufferStatus ()
void	DisplayFrameBufferAttachments ()
void	DisplayFrameBufferAttachment (unsigned int uattachment)
void	DisplayDrawBuffers ()
void	DisplayReadBuffer ()
void	DisplayBuffer (int value)
	vtkFrameBufferObject ()
	~vtkFrameBufferObject ()
void	CreateFBO ()
void	DestroyFBO ()
void	Create (int width, int height)
void	CreateBuffers (int width, int height)
void	CreateColorBuffers (int width, int height, bool shaderSupportsTextureInt)
void	Destroy ()
void	DestroyBuffers ()
void	DestroyColorBuffers ()
void	ActivateBuffers ()
bool	LoadRequiredExtensions (vtkOpenGLExtensionManager *manager)
Protected Attributes
vtkWeakPointer< vtkRenderWindow >	Context
bool	DepthBufferNeeded
bool	ColorBuffersDirty
unsigned int	FBOIndex
int	PreviousFBOIndex
unsigned int	DepthBuffer
unsigned int	NumberOfRenderTargets
int	LastSize [2]
std::vector< unsigned int >	UserZSlices
std::vector< vtkSmartPointer < vtkTextureObject > >	UserColorBuffers
std::vector< vtkSmartPointer < vtkTextureObject > >	ColorBuffers
std::vector< unsigned int >	ActiveBuffers
vtkSmartPointer< vtkTextureObject >	UserDepthBuffer
bool	DepthBufferDirty

Detailed Description

internal class which encapsulates OpenGL frame buffer object. Not to be used directly.

Encapsulates an OpenGL Frame Buffer Object. For use by vtkOpenGLFBORenderWindow, not to be used directly.

Warning:: DON'T PLAY WITH IT YET.

Definition at line 40 of file vtkFrameBufferObject.h.

Member Typedef Documentation

typedef vtkObject vtkFrameBufferObject::Superclass

Reimplemented from vtkObject.

Definition at line 44 of file vtkFrameBufferObject.h.

Constructor & Destructor Documentation

vtkFrameBufferObject::vtkFrameBufferObject ( ) [protected]

vtkFrameBufferObject::~vtkFrameBufferObject ( ) [protected]

Member Function Documentation

static vtkFrameBufferObject* vtkFrameBufferObject::New ( ) [static]

Create an object with Debug turned off, modified time initialized to zero, and reference counting on.

Reimplemented from vtkObject.

static int vtkFrameBufferObject::IsTypeOf ( const char * name ) [static]

Return 1 if this class type 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 vtkObject.

virtual int vtkFrameBufferObject::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 vtkObject.

static vtkFrameBufferObject* vtkFrameBufferObject::SafeDownCast ( vtkObjectBase * o ) [static]

Reimplemented from vtkObject.

virtual vtkObjectBase* vtkFrameBufferObject::NewInstanceInternal ( ) const [protected, virtual]

Reimplemented from vtkObject.

vtkFrameBufferObject* vtkFrameBufferObject::NewInstance ( ) const

Reimplemented from vtkObject.

void vtkFrameBufferObject::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.

void vtkFrameBufferObject::SetContext ( vtkRenderWindow * context )

Get/Set the context. Context must be a vtkOpenGLRenderWindow. This does not increase the reference count of the context to avoid reference loops. SetContext() may raise an error is the OpenGL context does not support the required OpenGL extensions.

vtkRenderWindow* vtkFrameBufferObject::GetContext ( )

Get/Set the context. Context must be a vtkOpenGLRenderWindow. This does not increase the reference count of the context to avoid reference loops. SetContext() may raise an error is the OpenGL context does not support the required OpenGL extensions.

bool vtkFrameBufferObject::Start	(	int	width,
		int	height,
		bool	shaderSupportsTextureInt
	)

User must take care that width/height match the dimensions of the user defined texture attachments. This method makes the "active buffers" the buffers that will get drawn into by subsequent drawing calls. Note that this does not clear the render buffers i.e. no glClear() calls are made by either of these methods. It's up to the caller to clear the buffers if needed.

bool vtkFrameBufferObject::StartNonOrtho	(	int	width,
		int	height,
		bool	shaderSupportsTextureInt
	)

User must take care that width/height match the dimensions of the user defined texture attachments. This method makes the "active buffers" the buffers that will get drawn into by subsequent drawing calls. Note that this does not clear the render buffers i.e. no glClear() calls are made by either of these methods. It's up to the caller to clear the buffers if needed.

void vtkFrameBufferObject::RenderQuad	(	int	minX,
		int	maxX,
		int	minY,
		int	maxY
	)

Renders a quad at the given location with pixel coordinates. This method is provided as a convenience, since we often render quads in a FBO.

Precondition:: positive_minX: minX>=0; increasing_x: minX<=maxX; valid_maxX: maxX<LastSize[0]; positive_minY: minY>=0; increasing_y: minY<=maxY; valid_maxY: maxY<LastSize[1]

void vtkFrameBufferObject::Bind ( )

Save the current framebuffer and make the frame buffer active. Multiple calls to Bind has no effect.

void vtkFrameBufferObject::UnBind ( )

Restore the framebuffer saved with the call to Bind(). Multiple calls to UnBind has no effect.

void vtkFrameBufferObject::SetActiveBuffer ( unsigned int index ) [inline]

Choose the buffer to render into.

Definition at line 93 of file vtkFrameBufferObject.h.

void vtkFrameBufferObject::SetActiveBuffers	(	int	numbuffers,
		unsigned int	indices[]
	)

Choose the buffer to render into. This is available only if the GL_ARB_draw_buffers extension is supported by the card.

void vtkFrameBufferObject::SetColorBuffer	(	unsigned int	index,
		vtkTextureObject *	texture,
		unsigned int	zslice = `0`
	)

vtkTextureObject* vtkFrameBufferObject::GetColorBuffer ( unsigned int index )

void vtkFrameBufferObject::RemoveColorBuffer ( unsigned int index )

void vtkFrameBufferObject::RemoveAllColorBuffers ( )

void vtkFrameBufferObject::SetDepthBuffer ( vtkTextureObject * depthTexture )

Set the texture to use as depth buffer.

void vtkFrameBufferObject::RemoveDepthBuffer ( )

Set the texture to use as depth buffer.

virtual void vtkFrameBufferObject::SetDepthBufferNeeded ( bool ) [virtual]

If true, the frame buffer object will be initialized with a depth buffer. Initial value is true.

virtual bool vtkFrameBufferObject::GetDepthBufferNeeded ( ) [virtual]

If true, the frame buffer object will be initialized with a depth buffer. Initial value is true.

void vtkFrameBufferObject::SetNumberOfRenderTargets ( unsigned int )

Set/Get the number of render targets to render into at once.

virtual unsigned int vtkFrameBufferObject::GetNumberOfRenderTargets ( ) [virtual]

Set/Get the number of render targets to render into at once.

unsigned int vtkFrameBufferObject::GetMaximumNumberOfActiveTargets ( )

Returns the maximum number of targets that can be rendered to at one time. This limits the active targets set by SetActiveTargets(). The return value is valid only if GetContext is non-null.

unsigned int vtkFrameBufferObject::GetMaximumNumberOfRenderTargets ( )

Returns the maximum number of render targets available. This limits the available attachement points for SetColorAttachment(). The return value is valid only if GetContext is non-null.

virtual int* vtkFrameBufferObject::GetLastSize ( ) [virtual]

Dimensions in pixels of the framebuffer.