osg::Texture2D Class Reference

Encapsulates OpenGl 2D texture functionality. More...

Inheritance diagram for osg::Texture2D:

[legend]List of all members.

Public Member Functions
	Texture2D ()
	Texture2D (Image *image)
	Texture2D (const Texture2D &text, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy.
	META_StateAttribute (osg, Texture2D, TEXTURE)
virtual int	compare (const StateAttribute &rhs) const
	Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.
virtual GLenum	getTextureTarget () const
void	setImage (Image *image)
	Sets the texture image.
Image *	getImage ()
	Gets the texture image.
const Image *	getImage () const
	Gets the const texture image.
unsigned int &	getModifiedCount (unsigned int contextID) const
virtual void	setImage (unsigned int, Image *image)
	Sets the texture image, ignoring face.
virtual Image *	getImage (unsigned int)
	Gets the texture image, ignoring face.
virtual const Image *	getImage (unsigned int) const
	Gets the const texture image, ignoring face.
virtual unsigned int	getNumImages () const
	Gets the number of images that can be assigned to the Texture.
void	setTextureSize (int width, int height) const
	Sets the texture width and height.
void	setTextureWidth (int width)
int	getTextureWidth () const
void	setTextureHeight (int height)
int	getTextureHeight () const
void	setSubloadCallback (SubloadCallback *cb)
SubloadCallback *	getSubloadCallback ()
const SubloadCallback *	getSubloadCallback () const
void	setNumMipmapLevels (unsigned int num) const
	Helper function.
unsigned int	getNumMipmapLevels () const
	Gets the number of mipmap levels created.
void	copyTexImage2D (State &state, int x, int y, int width, int height)
	Copies pixels into a 2D texture image, as per glCopyTexImage2D.
void	copyTexSubImage2D (State &state, int xoffset, int yoffset, int x, int y, int width, int height)
	Copies a two-dimensional texture subimage, as per glCopyTexSubImage2D.
virtual void	apply (State &state) const
	Bind the texture object.
Protected Types
typedef buffered_value< unsigned int >	ImageModifiedCount
Protected Member Functions
virtual	~Texture2D ()
virtual void	computeInternalFormat () const
Protected Attributes
ref_ptr< Image >	_image
	It's not ideal that _image is mutable, but it's required since Image::ensureDimensionsArePowerOfTwo() can only be called in a valid OpenGL context, and therefore within Texture::apply, which is const.
GLsizei	_textureWidth
	Subloaded images can have different texture and image sizes.
GLsizei	_textureHeight
	Subloaded images can have different texture and image sizes.
GLsizei	_numMipmapLevels
	Number of mipmap levels created.
ref_ptr< SubloadCallback >	_subloadCallback
ImageModifiedCount	_modifiedCount

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Detailed Description

Encapsulates OpenGl 2D texture functionality.

Doesn't support cube maps, so ignore face parameters.

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Member Typedef Documentation

typedef buffered_value<unsigned int> osg::Texture2D::ImageModifiedCount [protected]

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Constructor & Destructor Documentation

osg::Texture2D::Texture2D (   )

osg::Texture2D::Texture2D (  Image *  image  )

osg::Texture2D::Texture2D (  const Texture2D &  text, const CopyOp &  copyop = CopyOp::SHALLOW_COPY )

Copy constructor using CopyOp to manage deep vs shallow copy.

virtual osg::Texture2D::~Texture2D (   )  [protected, virtual]

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Member Function Documentation

virtual void osg::Texture2D::apply (  State &  state  )  const [virtual]

Bind the texture object. If the texture object hasn't already been compiled, create the texture mipmap levels. Implements osg::Texture. Reimplemented in osgText::Font::GlyphTexture.

virtual int osg::Texture2D::compare (  const StateAttribute &  rhs  )  const [virtual]

Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. Implements osg::StateAttribute.

virtual void osg::Texture2D::computeInternalFormat (   )  const [protected, virtual]

Implements osg::Texture.

void osg::Texture2D::copyTexImage2D (  State &  state, int  x, int  y, int  width, int  height )

Copies pixels into a 2D texture image, as per glCopyTexImage2D. Creates an OpenGL texture object from the current OpenGL background framebuffer contents at position x, y with width width and height height. width and height must be a power of two.

void osg::Texture2D::copyTexSubImage2D (  State &  state, int  xoffset, int  yoffset, int  x, int  y, int  width, int  height )

Copies a two-dimensional texture subimage, as per glCopyTexSubImage2D. Updates a portion of an existing OpenGL texture object from the current OpenGL background framebuffer contents at position x, y with width width and height height. Loads framebuffer data into the texture using offsets xoffset and yoffset. width and height must be powers of two.

virtual const Image* osg::Texture2D::getImage (  unsigned  int  )  const [inline, virtual]

Gets the const texture image, ignoring face. Implements osg::Texture.

virtual Image* osg::Texture2D::getImage (  unsigned  int  )  [inline, virtual]

Gets the texture image, ignoring face. Implements osg::Texture.

const Image* osg::Texture2D::getImage (   )  const [inline]

Gets the const texture image.

Image* osg::Texture2D::getImage (   )  [inline]

Gets the texture image.

unsigned int& osg::Texture2D::getModifiedCount (  unsigned int  contextID  )  const [inline]

virtual unsigned int osg::Texture2D::getNumImages (   )  const [inline, virtual]

Gets the number of images that can be assigned to the Texture. Implements osg::Texture.

unsigned int osg::Texture2D::getNumMipmapLevels (   )  const [inline]

Gets the number of mipmap levels created.

const SubloadCallback* osg::Texture2D::getSubloadCallback (   )  const [inline]

SubloadCallback* osg::Texture2D::getSubloadCallback (   )  [inline]

int osg::Texture2D::getTextureHeight (   )  const [inline]

virtual GLenum osg::Texture2D::getTextureTarget (   )  const [inline, virtual]

Implements osg::Texture.

int osg::Texture2D::getTextureWidth (   )  const [inline]

osg::Texture2D::META_StateAttribute (  osg  , Texture2D  , TEXTURE  )

virtual void osg::Texture2D::setImage (  unsigned  int, Image *  image )  [inline, virtual]

Sets the texture image, ignoring face. Implements osg::Texture.

void osg::Texture2D::setImage (  Image *  image  )

Sets the texture image.

void osg::Texture2D::setNumMipmapLevels (  unsigned int  num  )  const [inline]

Helper function. Sets the number of mipmap levels created for this texture. Should only be called within an osg::Texuture::apply(), or during a custom OpenGL texture load.

void osg::Texture2D::setSubloadCallback (  SubloadCallback *  cb  )  [inline]

void osg::Texture2D::setTextureHeight (  int  height  )  [inline]

void osg::Texture2D::setTextureSize (  int  width, int  height )  const [inline]

Sets the texture width and height. If width or height are zero, calculate the respective value from the source image size.

void osg::Texture2D::setTextureWidth (  int  width  )  [inline]

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Member Data Documentation

ref_ptr<Image> osg::Texture2D::_image [protected]

It's not ideal that _image is mutable, but it's required since Image::ensureDimensionsArePowerOfTwo() can only be called in a valid OpenGL context, and therefore within Texture::apply, which is const.

ImageModifiedCount osg::Texture2D::_modifiedCount [mutable, protected]

GLsizei osg::Texture2D::_numMipmapLevels [mutable, protected]

Number of mipmap levels created.

ref_ptr<SubloadCallback> osg::Texture2D::_subloadCallback [protected]

GLsizei osg::Texture2D::_textureHeight [mutable, protected]

Subloaded images can have different texture and image sizes.

GLsizei osg::Texture2D::_textureWidth [mutable, protected]

Subloaded images can have different texture and image sizes.

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

• Texture2D

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