OpenGl_Texture Class Reference

Texture resource. More...

#include <OpenGl_Texture.hxx>

Inheritance diagram for OpenGl_Texture:

Public Member Functions
	OpenGl_Texture (const Handle< Graphic3d_TextureParams > &theParams=NULL)
	Create uninitialized VBO. More...
virtual	~OpenGl_Texture ()
	Destroy object. More...
bool	IsValid () const
GLenum	GetTarget () const
GLsizei	SizeX () const
GLsizei	SizeY () const
GLuint	TextureId () const
GLint	GetFormat () const
bool	Create (const Handle< OpenGl_Context > &theCtx)
	Creates Texture id if not yet generated. Data should be initialized by another method. More...
virtual void	Release (const OpenGl_Context *theCtx)
	Destroy object - will release GPU memory if any. More...
void	Bind (const Handle< OpenGl_Context > &theCtx, const GLenum theTextureUnit=GL_TEXTURE0) const
	Bind this Texture to specified unit. More...
void	Unbind (const Handle< OpenGl_Context > &theCtx, const GLenum theTextureUnit=GL_TEXTURE0) const
	Unbind texture from specified unit. More...
bool	Init (const Handle< OpenGl_Context > &theCtx, const Image_PixMap &theImage, const Graphic3d_TypeOfTexture theType)
	Notice that texture will be unbound after this call. More...
const Standard_Boolean	HasMipmaps () const
const Handle < Graphic3d_TextureParams > &	GetParams () const
void	SetParams (const Handle< Graphic3d_TextureParams > &theParams)
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...

Protected Attributes
GLuint	myTextureId
	GL resource ID. More...
GLenum	myTarget
	GL_TEXTURE_1D/GL_TEXTURE_2D. More...
GLsizei	mySizeX
	texture width More...
GLsizei	mySizeY
	texture height More...
GLint	myTextFormat
	texture format - GL_RGB, GL_RGBA,... More...
Standard_Boolean	myHasMipmaps
	flag indicates that texture was uploaded with mipmaps More...
Handle< Graphic3d_TextureParams >	myParams
	texture parameters More...

Detailed Description

Texture resource.

Constructor & Destructor Documentation

OpenGl_Texture::OpenGl_Texture

(

const Handle< Graphic3d_TextureParams > &

theParams = NULL

)

Create uninitialized VBO.

virtual OpenGl_Texture::~OpenGl_Texture ( )

virtual

Destroy object.

Member Function Documentation

void OpenGl_Texture::Bind	(	const Handle< OpenGl_Context > &	theCtx,
		const GLenum	theTextureUnit = GL_TEXTURE0
	)		const

Bind this Texture to specified unit.

bool OpenGl_Texture::Create

(

const Handle< OpenGl_Context > &

theCtx

)

Creates Texture id if not yet generated. Data should be initialized by another method.

GLint OpenGl_Texture::GetFormat ( ) const

inline

Returns

texture format

const Handle< Graphic3d_TextureParams >& OpenGl_Texture::GetParams

(

)

const

Returns

assigned texture parameters (not necessary applied)

GLenum OpenGl_Texture::GetTarget ( ) const

inline

Returns

target to which the texture is bound (GL_TEXTURE_1D, GL_TEXTURE_2D)

const Standard_Boolean OpenGl_Texture::HasMipmaps

(

)

const

Returns

true if texture was generated within mipmaps

bool OpenGl_Texture::Init	(	const Handle< OpenGl_Context > &	theCtx,
		const Image_PixMap &	theImage,
		const Graphic3d_TypeOfTexture	theType
	)

Notice that texture will be unbound after this call.

bool OpenGl_Texture::IsValid ( ) const

inline

Returns

true if current object was initialized

virtual void OpenGl_Texture::Release ( const OpenGl_Context *  theCtx )

virtual

Destroy object - will release GPU memory if any.

Implements OpenGl_Resource.

Reimplemented in OpenGl_PointSprite.

void OpenGl_Texture::SetParams

(

const Handle< Graphic3d_TextureParams > &

theParams

)

Parameters

texture

parameters

GLsizei OpenGl_Texture::SizeX ( ) const

inline

Returns

texture width (0 LOD)

GLsizei OpenGl_Texture::SizeY ( ) const

inline

Returns

texture height (0 LOD)

GLuint OpenGl_Texture::TextureId ( ) const

inline

Returns

texture ID

void OpenGl_Texture::Unbind	(	const Handle< OpenGl_Context > &	theCtx,
		const GLenum	theTextureUnit = GL_TEXTURE0
	)		const

Unbind texture from specified unit.

Field Documentation

Standard_Boolean OpenGl_Texture::myHasMipmaps

protected

flag indicates that texture was uploaded with mipmaps

Handle< Graphic3d_TextureParams > OpenGl_Texture::myParams

protected

texture parameters

GLsizei OpenGl_Texture::mySizeX

protected

texture width

GLsizei OpenGl_Texture::mySizeY

protected

texture height

GLenum OpenGl_Texture::myTarget

protected

GL_TEXTURE_1D/GL_TEXTURE_2D.

GLint OpenGl_Texture::myTextFormat

protected

texture format - GL_RGB, GL_RGBA,...

GLuint OpenGl_Texture::myTextureId

protected

GL resource ID.

const GLuint OpenGl_Texture::NO_TEXTURE = 0

static

Helpful constants.

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

• OpenGl_Texture.hxx