makVrv::DtGlRenderTexture Class Reference

A helper classes for creating a RTT target, optionally including depth buffer. More...

Public Types
enum	ImageType {   RGB8, RGBA8, RG16F, RGB16F,   RGB32F, RGBA16F, RGBA32F, D16,   D24, D32 }

Public Member Functions
	DtGlRenderTexture (const std::string &name, int width, int height, int samples=0)
	create a RTT with a given name, with a given height and width if number of samples is greater than 0 then it will use a multisample render buffer
virtual	~DtGlRenderTexture ()
	DTOR.
bool	init (ImageType colorFormat=RGB32F, GLenum minFilter=GL_LINEAR, GLenum wrapMode=GL_CLAMP_TO_EDGE)
	initialize the RTT with a texture format and sampling/wrapping hints
bool	initDepth (ImageType depthFormat=D32)
	Optionally create a depth texture to go with the RTT that is bound when drawing into.
void	activateForDrawingInto ()
	activate this RTT for drawing into. Binds the internal FBO and color/depth targets
void	deactivateForDrawingInto ()
	deactivates the RTT
void	bindColorTexture (int unit)
	bind the color texture to a given texture unit for use as a source texture for rendering
void	unbindColorTexture (int unit)
	bind the depth texture, if it exists, to a given texture unit for use as a source for rendering
int	width () const
	returns width of the RTT
int	height () const
	returns height of the RTT
unsigned int	colorId () const
	returns the OpenGL texture id of the color texture. Must be initialized first otherwise it will return 0.
unsigned int	depthId () const
	returns the OpenGL texture id of the depth texture. Must be initialized first otherwise it will return 0.
int	numSamples () const
	returns the number of multi samples to use with this render to texture

Protected Member Functions
void	initColorTexture (const std::string &name, GLenum minfilter, GLenum wrapMode)
void	initDepthBufferTexture (const std::string &name)
void	initFBO (const std::string &name)
GLenum	getGLInternalTypes (ImageType colorType)

Protected Attributes
unsigned int	myFboId
unsigned int	myMultisampleFboId
unsigned int	myMultisampleColorBuffer
unsigned int	myMultisampleDepthBuffer
unsigned int	myColorId
unsigned int	myDepthId
int	myWidth
int	myHeight
bool	myHasDepth
bool	myIsValid
GLenum	myColorFormat
GLenum	myDepthFormat
std::string	myName
int	myNumSamples

Private Member Functions
	DtGlRenderTexture ()
	private default constructor
	DtGlRenderTexture (const DtGlRenderTexture &)
	prevent copy-construction
DtGlRenderTexture &	operator= (const DtGlRenderTexture &)
	prevent assignment

Detailed Description

A helper classes for creating a RTT target, optionally including depth buffer.

Member Enumeration Documentation

enum makVrv::DtGlRenderTexture::ImageType

Enumerator:

RGB8
RGBA8
RG16F
RGB16F
RGB32F
RGBA16F
RGBA32F
D16
D24
D32

Constructor & Destructor Documentation

makVrv::DtGlRenderTexture::DtGlRenderTexture ( )

private

private default constructor

makVrv::DtGlRenderTexture::DtGlRenderTexture ( const DtGlRenderTexture &  )

private

prevent copy-construction

makVrv::DtGlRenderTexture::DtGlRenderTexture	(	const std::string &	name,
		int	width,
		int	height,
		int	samples = 0
	)

create a RTT with a given name, with a given height and width if number of samples is greater than 0 then it will use a multisample render buffer

virtual makVrv::DtGlRenderTexture::~DtGlRenderTexture ( )

virtual

DTOR.

Member Function Documentation

DtGlRenderTexture& makVrv::DtGlRenderTexture::operator= ( const DtGlRenderTexture &  )

private

prevent assignment

bool makVrv::DtGlRenderTexture::init	(	ImageType	colorFormat = RGB32F,
		GLenum	minFilter = GL_LINEAR,
		GLenum	wrapMode = GL_CLAMP_TO_EDGE
	)

initialize the RTT with a texture format and sampling/wrapping hints

bool makVrv::DtGlRenderTexture::initDepth

(

ImageType

depthFormat = D32

)

Optionally create a depth texture to go with the RTT that is bound when drawing into.

void makVrv::DtGlRenderTexture::activateForDrawingInto

(

)

activate this RTT for drawing into. Binds the internal FBO and color/depth targets

void makVrv::DtGlRenderTexture::deactivateForDrawingInto

(

)

deactivates the RTT

void makVrv::DtGlRenderTexture::bindColorTexture

(

int

unit

)

bind the color texture to a given texture unit for use as a source texture for rendering

void makVrv::DtGlRenderTexture::unbindColorTexture

(

int

unit

)

bind the depth texture, if it exists, to a given texture unit for use as a source for rendering

int makVrv::DtGlRenderTexture::width

(

)

const

returns width of the RTT

int makVrv::DtGlRenderTexture::height

(

)

const

returns height of the RTT

unsigned int makVrv::DtGlRenderTexture::colorId

(

)

const

returns the OpenGL texture id of the color texture. Must be initialized first otherwise it will return 0.

unsigned int makVrv::DtGlRenderTexture::depthId

(

)

const

returns the OpenGL texture id of the depth texture. Must be initialized first otherwise it will return 0.

int makVrv::DtGlRenderTexture::numSamples

(

)

const

returns the number of multi samples to use with this render to texture

void makVrv::DtGlRenderTexture::initColorTexture ( const std::string &  name, GLenum  minfilter, GLenum  wrapMode  )

protected

void makVrv::DtGlRenderTexture::initDepthBufferTexture ( const std::string &  name )

protected

void makVrv::DtGlRenderTexture::initFBO ( const std::string &  name )

protected

GLenum makVrv::DtGlRenderTexture::getGLInternalTypes ( ImageType  colorType )

protected

Member Data Documentation

unsigned int makVrv::DtGlRenderTexture::myFboId

protected

unsigned int makVrv::DtGlRenderTexture::myMultisampleFboId

protected

unsigned int makVrv::DtGlRenderTexture::myMultisampleColorBuffer

protected

unsigned int makVrv::DtGlRenderTexture::myMultisampleDepthBuffer

protected

unsigned int makVrv::DtGlRenderTexture::myColorId

protected

unsigned int makVrv::DtGlRenderTexture::myDepthId

protected

int makVrv::DtGlRenderTexture::myWidth

protected

int makVrv::DtGlRenderTexture::myHeight

protected

bool makVrv::DtGlRenderTexture::myHasDepth

protected

bool makVrv::DtGlRenderTexture::myIsValid

protected

GLenum makVrv::DtGlRenderTexture::myColorFormat

protected

GLenum makVrv::DtGlRenderTexture::myDepthFormat

protected

std::string makVrv::DtGlRenderTexture::myName

protected

int makVrv::DtGlRenderTexture::myNumSamples

protected

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

• /exports/nfedora7-1/nightly/docs/vrforcesDevelopment.tot/include/vrvGraphicsUtils/DtGlRenderToTexture.h