OpenSceneGraph 2.8.4
Classes | Public Types | Public Member Functions | Static Public Member Functions | Protected Member Functions | Protected Attributes
osg::BlendEquation Class Reference

Encapsulates OpenGL BlendEquation state. More...

Inheritance diagram for osg::BlendEquation:
Inheritance graph
[legend]

List of all members.

Classes

class  Extensions
 Encapsulates queries of extension availability, obtains extension function pointers, and provides convenience wrappers for calling extension functions. More...

Public Types

enum  Equation {
  RGBA_MIN = GL_MIN, RGBA_MAX = GL_MAX, ALPHA_MIN = GL_ALPHA_MIN_SGIX, ALPHA_MAX = GL_ALPHA_MAX_SGIX,
  LOGIC_OP = GL_LOGIC_OP, FUNC_ADD = GL_FUNC_ADD, FUNC_SUBTRACT = GL_FUNC_SUBTRACT, FUNC_REVERSE_SUBTRACT = GL_FUNC_REVERSE_SUBTRACT
}

Public Member Functions

 BlendEquation ()
 BlendEquation (Equation equation)
 BlendEquation (const BlendEquation &trans, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
 Copy constructor using CopyOp to manage deep vs shallow copy.
 META_StateAttribute (osg, BlendEquation, BLENDEQUATION)
virtual int compare (const StateAttribute &sa) const
 Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.
virtual bool getModeUsage (StateAttribute::ModeUsage &usage) const
 Return the modes associated with this StateAttribute.
void setEquation (Equation equation)
Equation getEquation () const
virtual void apply (State &state) const
 apply the OpenGL state attributes.

Static Public Member Functions

static ExtensionsgetExtensions (unsigned int contextID, bool createIfNotInitalized)
 Returns the Extensions object for the given context.
static void setExtensions (unsigned int contextID, Extensions *extensions)
 setExtensions() allows users to override the extensions across graphics contexts.

Protected Member Functions

virtual ~BlendEquation ()

Protected Attributes

Equation _equation

Detailed Description

Encapsulates OpenGL BlendEquation state.


Member Enumeration Documentation

Enumerator:
RGBA_MIN 
RGBA_MAX 
ALPHA_MIN 
ALPHA_MAX 
LOGIC_OP 
FUNC_ADD 
FUNC_SUBTRACT 
FUNC_REVERSE_SUBTRACT 

Constructor & Destructor Documentation

osg::BlendEquation::BlendEquation ( )
osg::BlendEquation::BlendEquation ( Equation  equation)
osg::BlendEquation::BlendEquation ( const BlendEquation trans,
const CopyOp copyop = CopyOp::SHALLOW_COPY 
) [inline]

Copy constructor using CopyOp to manage deep vs shallow copy.

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

Member Function Documentation

virtual void osg::BlendEquation::apply ( State ) const [virtual]

apply the OpenGL state attributes.

The render info for the current OpenGL context is passed in to allow the StateAttribute to obtain details on the the current context and state.

Reimplemented from osg::StateAttribute.

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

Return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.

Implements osg::StateAttribute.

References COMPARE_StateAttribute_Parameter, and COMPARE_StateAttribute_Types.

Equation osg::BlendEquation::getEquation ( ) const [inline]
static Extensions* osg::BlendEquation::getExtensions ( unsigned int  contextID,
bool  createIfNotInitalized 
) [static]

Returns the Extensions object for the given context.

If createIfNotInitalized is true and the Extensions object doesn't exist, getExtensions() creates it on the given context. Returns NULL if createIfNotInitalized is false and the Extensions object doesn't exist.

virtual bool osg::BlendEquation::getModeUsage ( StateAttribute::ModeUsage ) const [inline, virtual]

Return the modes associated with this StateAttribute.

Reimplemented from osg::StateAttribute.

References osg::StateAttribute::ModeUsage::usesMode().

osg::BlendEquation::META_StateAttribute ( osg  ,
BlendEquation  ,
BLENDEQUATION   
)
void osg::BlendEquation::setEquation ( Equation  equation) [inline]
static void osg::BlendEquation::setExtensions ( unsigned int  contextID,
Extensions extensions 
) [static]

setExtensions() allows users to override the extensions across graphics contexts.

Typically used when you have different extensions supported across graphics pipes, but need to ensure that they all use the same low common denominator extensions.


Member Data Documentation


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

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Generated at Sun Jan 8 2012 13:16:05 for the OpenSceneGraph by doxygen 1.7.4.