Texture Buffer Object. This is a special 1D texture that VBO-style initialized. The main differences from general 1D texture: More...

#include <OpenGl_TextureBufferArb.hxx>

Inheritance diagram for OpenGl_TextureBufferArb:

[legend]

Public Member Functions
	OpenGl_TextureBufferArb ()
	Create uninitialized TBO. More...

virtual	~OpenGl_TextureBufferArb ()
	Destroy object, will throw exception if GPU memory not released with Release() before. More...

virtual GLenum	GetTarget () const
	Override VBO target. More...

bool	IsValid () const
	Returns true if TBO is valid. Notice that no any real GL call is performed! More...

virtual void	Release (const OpenGl_Context *theGlCtx)
	Destroy object - will release GPU memory if any. More...

bool	Create (const Handle< OpenGl_Context > &theGlCtx)
	Creates VBO and Texture names (ids) if not yet generated. Data should be initialized by another method. More...

bool	Init (const Handle< OpenGl_Context > &theGlCtx, const GLuint theComponentsNb, const GLsizei theElemsNb, const GLfloat *theData)
	Perform TBO initialization with specified data. Existing data will be deleted. More...

void	BindTexture (const Handle< OpenGl_Context > &theGlCtx, const GLenum theTextureUnit=GL_TEXTURE0) const
	Bind TBO to specified Texture Unit. More...

void	UnbindTexture (const Handle< OpenGl_Context > &theGlCtx, const GLenum theTextureUnit=GL_TEXTURE0) const
	Unbind TBO. More...

Public Member Functions inherited from OpenGl_VertexBuffer
	OpenGl_VertexBuffer ()
	Create uninitialized VBO. More...

virtual	~OpenGl_VertexBuffer ()
	Destroy object. More...

bool	IsValid () const

GLuint	GetComponentsNb () const

GLsizei	GetElemsNb () const

GLenum	GetDataType () const

bool	Create (const Handle< OpenGl_Context > &theGlCtx)
	Creates VBO name (id) if not yet generated. Data should be initialized by another method. More...

void	Bind (const Handle< OpenGl_Context > &theGlCtx) const
	Bind this VBO. More...

void	Unbind (const Handle< OpenGl_Context > &theGlCtx) const
	Unbind this VBO. More...

bool	Init (const Handle< OpenGl_Context > &theGlCtx, const GLuint theComponentsNb, const GLsizei theElemsNb, const GLfloat *theData)
	Notice that VBO will be unbound after this call. More...

bool	Init (const Handle< OpenGl_Context > &theGlCtx, const GLuint theComponentsNb, const GLsizei theElemsNb, const GLuint *theData)
	Notice that VBO will be unbound after this call. More...

bool	Init (const Handle< OpenGl_Context > &theGlCtx, const GLuint theComponentsNb, const GLsizei theElemsNb, const GLubyte *theData)
	Notice that VBO will be unbound after this call. More...

bool	SubData (const Handle< OpenGl_Context > &theGlCtx, const GLsizei theElemFrom, const GLsizei theElemsNb, const GLfloat *theData)
	Notice that VBO will be unbound after this call. Function replaces portion of data within this VBO using glBufferSubData(). The VBO should be initialized before call. More...

bool	SubData (const Handle< OpenGl_Context > &theGlCtx, const GLsizei theElemFrom, const GLsizei theElemsNb, const GLuint *theData)
	Notice that VBO will be unbound after this call. Function replaces portion of data within this VBO using glBufferSubData(). The VBO should be initialized before call. More...

bool	SubData (const Handle< OpenGl_Context > &theGlCtx, const GLsizei theElemFrom, const GLsizei theElemsNb, const GLubyte *theData)
	Notice that VBO will be unbound after this call. Function replaces portion of data within this VBO using glBufferSubData(). The VBO should be initialized before call. More...

void	BindVertexAttrib (const Handle< OpenGl_Context > &theGlCtx, const GLuint theAttribLoc) const
	Bind this VBO to active GLSL program. More...

void	UnbindVertexAttrib (const Handle< OpenGl_Context > &theGlCtx, const GLuint theAttribLoc) const
	Unbind any VBO from active GLSL program. More...

void	BindFixed (const Handle< OpenGl_Context > &theGlCtx, const GLenum theMode) const
	Bind this VBO as fixed pipeline attribute. More...

void	UnbindFixed (const Handle< OpenGl_Context > &theGlCtx, const GLenum theMode) const
	Unbind this VBO as fixed pipeline attribute. More...

Public Member Functions inherited from OpenGl_Resource
	OpenGl_Resource ()
	Empty constructor. More...

virtual	~OpenGl_Resource ()
	Destructor. Inheritors should call Clean (NULL) within it. More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual void	Delete () const
	Memory deallocator for transient classes. More...

virtual void	ShallowDump (Standard_OStream &) const

virtual const Handle_Standard_Type &	DynamicType () const
	Returns a type information object about this object. More...

Standard_Boolean	IsInstance (const Handle_Standard_Type &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const Handle_Standard_Type &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

virtual Handle_Standard_Transient	This () const
	Returns a Handle which references this object. Must never be called to objects created in stack. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

Static Public Attributes
static const GLuint	NO_TEXTURE = 0
	Helpful constants. More...

Static Public Attributes inherited from OpenGl_VertexBuffer
static const GLuint	NO_BUFFER = 0
	Helpful constants. More...

Protected Attributes
GLuint	myTextureId
	texture id More...

GLenum	myTexFormat
	internal texture format More...

Protected Attributes inherited from OpenGl_VertexBuffer
GLuint	myBufferId
	VBO name (index) More...

GLuint	myComponentsNb
	Number of components per generic vertex attribute, must be 1, 2, 3, or 4. More...

GLsizei	myElemsNb
	Number of vertex attributes / number of vertices. More...

GLenum	myDataType
	Data type (GL_FLOAT, GL_UNSIGNED_INT, GL_UNSIGNED_BYTE etc.) More...

Detailed Description

Texture Buffer Object. This is a special 1D texture that VBO-style initialized. The main differences from general 1D texture:

no interpolation between field;
greater sizes;
special sampler object in GLSL shader to access data by index.

Notice that though TBO is inherited from VBO this is to unify design user shouldn't cast it to base class and all really useful methods are declared in this class.

Constructor & Destructor Documentation

OpenGl_TextureBufferArb::OpenGl_TextureBufferArb ( )

Create uninitialized TBO.

virtual OpenGl_TextureBufferArb::~OpenGl_TextureBufferArb ( )

virtual

Destroy object, will throw exception if GPU memory not released with Release() before.

Member Function Documentation

void OpenGl_TextureBufferArb::BindTexture	(	const Handle< OpenGl_Context > &	theGlCtx,
		const GLenum	theTextureUnit = `GL_TEXTURE0`
	)		const

Bind TBO to specified Texture Unit.

bool OpenGl_TextureBufferArb::Create ( const Handle< OpenGl_Context > & theGlCtx )

Creates VBO and Texture names (ids) if not yet generated. Data should be initialized by another method.

virtual GLenum OpenGl_TextureBufferArb::GetTarget ( ) const

virtual

Override VBO target.

Reimplemented from OpenGl_VertexBuffer.

bool OpenGl_TextureBufferArb::Init	(	const Handle< OpenGl_Context > &	theGlCtx,
		const GLuint	theComponentsNb,
		const GLsizei	theElemsNb,
		const GLfloat *	theData
	)

Perform TBO initialization with specified data. Existing data will be deleted.

bool OpenGl_TextureBufferArb::IsValid ( ) const

inline

Returns true if TBO is valid. Notice that no any real GL call is performed!

virtual void OpenGl_TextureBufferArb::Release ( const OpenGl_Context * theGlCtx )

virtual

Destroy object - will release GPU memory if any.

Reimplemented from OpenGl_VertexBuffer.

void OpenGl_TextureBufferArb::UnbindTexture	(	const Handle< OpenGl_Context > &	theGlCtx,
		const GLenum	theTextureUnit = `GL_TEXTURE0`
	)		const

Unbind TBO.

Field Documentation

GLenum OpenGl_TextureBufferArb::myTexFormat

protected

internal texture format

GLuint OpenGl_TextureBufferArb::myTextureId

protected

texture id

const GLuint OpenGl_TextureBufferArb::NO_TEXTURE = 0

static

Helpful constants.

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

OpenGl_TextureBufferArb.hxx

Public Member Functions

Static Public Attributes

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation