osg::TextureRectangle Class Reference

Texture state class which encapsulates OpenGL texture functionality. More...

Inheritance diagram for osg::TextureRectangle:

[legend]List of all members.


Public Member Functions
	TextureRectangle ()
	TextureRectangle (Image *image)
	TextureRectangle (const TextureRectangle &text, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy.
	META_StateAttribute (osg, TextureRectangle, 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)
	Set the texture image.
Image *	getImage ()
	Get the texture image.
const Image *	getImage () const
	Get the const texture image.
unsigned int &	getModifiedCount (unsigned int contextID) const
virtual void	setImage (unsigned int, Image *image)
	Set the texture image, ignoring face value as there is only one image.
virtual Image *	getImage (unsigned int)
	Get the texture image, ignoring face value as there is only one image.
virtual const Image *	getImage (unsigned int) const
	Get the const texture image, ignoring face value as there is only one image.
virtual unsigned int	getNumImages () const
	Get the number of images that can be assigned to the Texture.
void	setTextureSize (int width, int height) const
	Set 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	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
	On first apply (unless already compiled), create and bind the texture, subsequent apply will simply bind to texture.
Protected Types
typedef buffered_value< unsigned int >	ImageModifiedCount
Protected Member Functions
virtual	~TextureRectangle ()
virtual void	computeInternalFormat () const
void	applyTexParameters (GLenum target, State &state) const
	Helper method.
void	applyTexImage_load (GLenum target, Image *image, State &state, GLsizei &inwidth, GLsizei &inheight) const
void	applyTexImage_subload (GLenum target, Image *image, State &state, GLsizei &inwidth, GLsizei &inheight, GLint &inInternalFormat) const
Protected Attributes
ref_ptr< Image >	_image
GLsizei	_textureWidth
GLsizei	_textureHeight
ref_ptr< SubloadCallback >	_subloadCallback
ImageModifiedCount	_modifiedCount

Detailed Description

Texture state class which encapsulates OpenGL texture functionality.

Member Typedef Documentation

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

Constructor & Destructor Documentation

osg::TextureRectangle::TextureRectangle ( )

osg::TextureRectangle::TextureRectangle ( Image * image )

osg::TextureRectangle::TextureRectangle ( const TextureRectangle & text,

const CopyOp & copyop = CopyOp::SHALLOW_COPY

)

Copy constructor using CopyOp to manage deep vs shallow copy.

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

Member Function Documentation

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

On first apply (unless already compiled), create and bind the texture, subsequent apply will simply bind to texture.

Implements osg::Texture.

void osg::TextureRectangle::applyTexImage_load ( GLenum target,

Image * image,

State & state,

GLsizei & inwidth,

GLsizei & inheight

) const [protected]

void osg::TextureRectangle::applyTexImage_subload ( GLenum target,

Image * image,

State & state,

GLsizei & inwidth,

GLsizei & inheight,

GLint & inInternalFormat

) const [protected]

void osg::TextureRectangle::applyTexParameters ( GLenum target,

State & state

) const [protected]

Helper method.
Sets texture paramters.
Reimplemented from osg::Texture.

virtual int osg::TextureRectangle::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::TextureRectangle::computeInternalFormat ( ) const [protected, virtual]

Implements osg::Texture.

void osg::TextureRectangle::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::TextureRectangle::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::TextureRectangle::getImage ( unsigned int ) const [inline, virtual]

Get the const texture image, ignoring face value as there is only one image.

Implements osg::Texture.

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

Get the texture image, ignoring face value as there is only one image.

Implements osg::Texture.

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

Get the const texture image.

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

Get the texture image.

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

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

Get the number of images that can be assigned to the Texture.

Implements osg::Texture.

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

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

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

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

Implements osg::Texture.

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

osg::TextureRectangle::META_StateAttribute ( osg ,

TextureRectangle ,

TEXTURE

)

virtual void osg::TextureRectangle::setImage ( unsigned int,

Image * image

) [inline, virtual]

Set the texture image, ignoring face value as there is only one image.

Implements osg::Texture.

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

Set the texture image.

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

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

void osg::TextureRectangle::setTextureSize ( int width,

int height

) const [inline]

Set the texture width and height.
If width or height are zero then the repsective size value is calculated from the source image sizes.