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

GLenum	GetFormat () const

bool	IsAlpha () const
	Return true for GL_RED and GL_ALPHA formats. More...

void	SetAlpha (const bool theValue)
	Setup to interprete the format as Alpha by Shader Manager (should be GL_ALPHA within compatible context or GL_RED otherwise). More...

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 (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...

bool	Init (const Handle< OpenGl_Context > &theCtx, const GLint theTextFormat, const GLenum thePixelFormat, const GLenum theDataType, const GLsizei theSizeX, const GLsizei theSizeY, const Graphic3d_TypeOfTexture theType, const Image_PixMap *theImage=NULL)
	Initialize the texture with specified format, size and texture type. If theImage is empty the texture data will contain trash. Notice that texture will be unbound after this call. More...

bool	InitRectangle (const Handle< OpenGl_Context > &theCtx, const Standard_Integer theSizeX, const Standard_Integer theSizeY, const OpenGl_TextureFormat &theFormat)
	Allocates texture rectangle with specified format and size. 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 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 Member Functions
static bool	GetDataFormat (const Handle< OpenGl_Context > &theCtx, const Image_PixMap &theData, GLint &theTextFormat, GLenum &thePixelFormat, GLenum &theDataType)
	Return texture type and format by Image_PixMap data format. 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...

GLenum	myTextFormat
	texture format - GL_RGB, GL_RGBA,... More...

Standard_Boolean	myHasMipmaps
	flag indicates that texture was uploaded with mipmaps More...

bool	myIsAlpha
	indicates alpha format 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.

static bool OpenGl_Texture::GetDataFormat	(	const Handle< OpenGl_Context > &	theCtx,
		const Image_PixMap &	theData,
		GLint &	theTextFormat,
		GLenum &	thePixelFormat,
		GLenum &	theDataType
	)

static

Return texture type and format by Image_PixMap data format.

GLenum OpenGl_Texture::GetFormat ( ) const

inline

Returns: texture format (not sized)

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::Init	(	const Handle< OpenGl_Context > &	theCtx,
		const GLint	theTextFormat,
		const GLenum	thePixelFormat,
		const GLenum	theDataType,
		const GLsizei	theSizeX,
		const GLsizei	theSizeY,
		const Graphic3d_TypeOfTexture	theType,
		const Image_PixMap *	theImage = `NULL`
	)

Initialize the texture with specified format, size and texture type. If theImage is empty the texture data will contain trash. Notice that texture will be unbound after this call.

bool OpenGl_Texture::InitRectangle	(	const Handle< OpenGl_Context > &	theCtx,
		const Standard_Integer	theSizeX,
		const Standard_Integer	theSizeY,
		const OpenGl_TextureFormat &	theFormat
	)

Allocates texture rectangle with specified format and size.

Note: Texture data is not initialized (will contain trash).

bool OpenGl_Texture::IsAlpha ( ) const

inline

Return true for GL_RED and GL_ALPHA formats.

bool OpenGl_Texture::IsValid ( ) const

inline

Returns: true if current object was initialized

virtual void OpenGl_Texture::Release ( OpenGl_Context * theCtx )

virtual

Destroy object - will release GPU memory if any.

Implements OpenGl_Resource.

Reimplemented in OpenGl_PointSprite.

void OpenGl_Texture::SetAlpha ( const bool theValue )

inline

Setup to interprete the format as Alpha by Shader Manager (should be GL_ALPHA within compatible context or GL_RED otherwise).

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

bool OpenGl_Texture::myIsAlpha

protected

indicates alpha format

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.

GLenum 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.

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

OpenGl_Texture.hxx

Public Member Functions

Static Public Member Functions

Static Public Attributes

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation