osg::BlendFunc Class Reference

Encapsulates OpenGL blend/transparency state. More...

Inheritance diagram for osg::BlendFunc:

[legend]List of all members.

Public Types
enum	BlendFuncMode {   DST_ALPHA = GL_DST_ALPHA, DST_COLOR = GL_DST_COLOR, ONE = GL_ONE, ONE_MINUS_DST_ALPHA = GL_ONE_MINUS_DST_ALPHA,   ONE_MINUS_DST_COLOR = GL_ONE_MINUS_DST_COLOR, ONE_MINUS_SRC_ALPHA = GL_ONE_MINUS_SRC_ALPHA, ONE_MINUS_SRC_COLOR = GL_ONE_MINUS_SRC_COLOR, SRC_ALPHA = GL_SRC_ALPHA,   SRC_ALPHA_SATURATE = GL_SRC_ALPHA_SATURATE, SRC_COLOR = GL_SRC_COLOR, CONSTANT_COLOR = GL_CONSTANT_COLOR, ONE_MINUS_CONSTANT_COLOR = GL_ONE_MINUS_CONSTANT_COLOR,   CONSTANT_ALPHA = GL_CONSTANT_ALPHA, ONE_MINUS_CONSTANT_ALPHA = GL_ONE_MINUS_CONSTANT_ALPHA, ZERO = GL_ZERO }
Public Member Functions
	BlendFunc ()
	BlendFunc (GLenum source, GLenum destination)
	BlendFunc (const BlendFunc &trans, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
	Copy constructor using CopyOp to manage deep vs shallow copy.
	META_StateAttribute (osg, BlendFunc, BLENDFUNC)
virtual int	compare (const StateAttribute &sa) const
	Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.
virtual bool	getModeUsage (ModeUsage &usage) const
	Return the modes associated with this StateAttribute.
void	setFunction (GLenum source, GLenum destination)
void	setSource (GLenum source)
GLenum	getSource () const
void	setDestination (GLenum destination)
GLenum	getDestination () const
virtual void	apply (State &state) const
	apply the OpenGL state attributes.
Protected Member Functions
virtual	~BlendFunc ()
Protected Attributes
GLenum	_source_factor
GLenum	_destination_factor

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Detailed Description

Encapsulates OpenGL blend/transparency state.

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Member Enumeration Documentation

enum osg::BlendFunc::BlendFuncMode

Enumeration values: DST_ALPHA  DST_COLOR  ONE  ONE_MINUS_DST_ALPHA  ONE_MINUS_DST_COLOR  ONE_MINUS_SRC_ALPHA  ONE_MINUS_SRC_COLOR  SRC_ALPHA  SRC_ALPHA_SATURATE  SRC_COLOR  CONSTANT_COLOR  ONE_MINUS_CONSTANT_COLOR  CONSTANT_ALPHA  ONE_MINUS_CONSTANT_ALPHA  ZERO

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Constructor & Destructor Documentation

osg::BlendFunc::BlendFunc (   )

osg::BlendFunc::BlendFunc (  GLenum  source, GLenum  destination )

osg::BlendFunc::BlendFunc (  const BlendFunc &  trans, const CopyOp &  copyop = CopyOp::SHALLOW_COPY )  [inline]

Copy constructor using CopyOp to manage deep vs shallow copy.

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

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Member Function Documentation

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

apply the OpenGL state attributes. The global state for the current OpenGL context is passed in to allow the StateAttribute to obtain details on the the current context and state. Implements osg::StateAttribute.

virtual int osg::BlendFunc::compare (  const StateAttribute &  sa  )  const [inline, virtual]

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

GLenum osg::BlendFunc::getDestination (   )  const [inline]

virtual bool osg::BlendFunc::getModeUsage (  ModeUsage &  usage  )  const [inline, virtual]

Return the modes associated with this StateAttribute. Reimplemented from osg::StateAttribute.

GLenum osg::BlendFunc::getSource (   )  const [inline]

osg::BlendFunc::META_StateAttribute (  osg  , BlendFunc  , BLENDFUNC  )

void osg::BlendFunc::setDestination (  GLenum  destination  )  [inline]

void osg::BlendFunc::setFunction (  GLenum  source, GLenum  destination )  [inline]

void osg::BlendFunc::setSource (  GLenum  source  )  [inline]

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Member Data Documentation

GLenum osg::BlendFunc::_destination_factor [protected]

GLenum osg::BlendFunc::_source_factor [protected]

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

• BlendFunc

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