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

FragmentProgram - encapsulates the OpenGL ARB fragment program state. More...

Inheritance diagram for osg::FragmentProgram:
Inheritance graph
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List of all members.

Classes

class  Extensions
 Extensions class which encapsulates the querying of extensions and associated function pointers, and provide convenience wrappers to check for the extensions or use the associated functions. More...

Public Types

typedef std::map< GLuint, Vec4LocalParamList
typedef std::map< GLenum, MatrixMatrixList

Public Member Functions

 FragmentProgram ()
 FragmentProgram (const FragmentProgram &vp, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
 Copy constructor using CopyOp to manage deep vs shallow copy.
 META_StateAttribute (osg, FragmentProgram, FRAGMENTPROGRAM)
virtual int compare (const osg::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.
GLuint & getFragmentProgramID (unsigned int contextID) const
 Get the handle to the fragment program id for the current context.
void setFragmentProgram (const char *program)
 Set the fragment program using a C style string.
void setFragmentProgram (const std::string &program)
 Set the fragment program using C++ style string.
const std::string & getFragmentProgram () const
 Get the fragment program.
void setProgramLocalParameter (const GLuint index, const Vec4 &p)
 Set Program Parameters.
void setLocalParameters (const LocalParamList &lpl)
 Set list of Program Parameters.
LocalParamListgetLocalParameters ()
 Get list of Program Parameters.
const LocalParamListgetLocalParameters () const
 Get const list of Program Parameters.
void setMatrix (const GLenum mode, const Matrix &matrix)
 Matrix.
void setMatrices (const MatrixList &matrices)
 Set list of Matrices.
MatrixListgetMatrices ()
 Get list of Matrices.
const MatrixListgetMatrices () const
 Get list of Matrices.
void dirtyFragmentProgramObject ()
 Force a recompile on next apply() of associated OpenGL vertex program objects.
virtual void apply (State &state) const
 apply the OpenGL state attributes.
virtual void compileGLObjects (State &state) const
 Default to nothing to compile - all state is applied immediately.
virtual void resizeGLObjectBuffers (unsigned int maxSize)
 Resize any per context GLObject buffers to specified size.
virtual void releaseGLObjects (State *state=0) const
 release an OpenGL objects in specified graphics context if State object is passed, otherwise release OpenGL objects for all graphics context if State object pointer == NULL.

Static Public Member Functions

static void deleteFragmentProgramObject (unsigned int contextID, GLuint handle)
 use deleteFragmentProgramObject instead of glDeletePrograms to allow OpenGL Fragment Program objects to be cached until they can be deleted by the OpenGL context in which they were created, specified by contextID.
static void flushDeletedFragmentProgramObjects (unsigned int contextID, double currentTime, double &availableTime)
 flush all the cached fragment programs which need to be deleted in the OpenGL context related to contextID.
static void discardDeletedFragmentProgramObjects (unsigned int contextID)
 discard all the cached fragment programs which need to be deleted in the OpenGL context related to contextID.
static ExtensionsgetExtensions (unsigned int contextID, bool createIfNotInitalized)
 Function to call to get the extension of a specified context.
static void setExtensions (unsigned int contextID, Extensions *extensions)
 setExtensions allows users to override the extensions across graphics contexts.

Protected Types

typedef buffered_value< GLuint > FragmentProgramIDList

Protected Member Functions

virtual ~FragmentProgram ()

Protected Attributes

FragmentProgramIDList _fragmentProgramIDList
std::string _fragmentProgram
LocalParamList _programLocalParameters
MatrixList _matrixList

Detailed Description

FragmentProgram - encapsulates the OpenGL ARB fragment program state.


Member Typedef Documentation

typedef std::map<GLuint,Vec4> osg::FragmentProgram::LocalParamList
typedef std::map<GLenum,Matrix> osg::FragmentProgram::MatrixList

Constructor & Destructor Documentation

osg::FragmentProgram::FragmentProgram ( )
osg::FragmentProgram::FragmentProgram ( const FragmentProgram vp,
const CopyOp copyop = CopyOp::SHALLOW_COPY 
)

Copy constructor using CopyOp to manage deep vs shallow copy.

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

Member Function Documentation

virtual void osg::FragmentProgram::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::FragmentProgram::compare ( const osg::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.

virtual void osg::FragmentProgram::compileGLObjects ( State ) const [inline, virtual]

Default to nothing to compile - all state is applied immediately.

Reimplemented from osg::StateAttribute.

static void osg::FragmentProgram::deleteFragmentProgramObject ( unsigned int  contextID,
GLuint  handle 
) [static]

use deleteFragmentProgramObject instead of glDeletePrograms to allow OpenGL Fragment Program objects to be cached until they can be deleted by the OpenGL context in which they were created, specified by contextID.

void osg::FragmentProgram::dirtyFragmentProgramObject ( )

Force a recompile on next apply() of associated OpenGL vertex program objects.

static void osg::FragmentProgram::discardDeletedFragmentProgramObjects ( unsigned int  contextID) [static]

discard all the cached fragment programs which need to be deleted in the OpenGL context related to contextID.

Note, unlike flush no OpenGL calls are made, instead the handles are all removed. this call is useful for when an OpenGL context has been destroyed.

static void osg::FragmentProgram::flushDeletedFragmentProgramObjects ( unsigned int  contextID,
double  currentTime,
double &  availableTime 
) [static]

flush all the cached fragment programs which need to be deleted in the OpenGL context related to contextID.

static Extensions* osg::FragmentProgram::getExtensions ( unsigned int  contextID,
bool  createIfNotInitalized 
) [static]

Function to call to get the extension of a specified context.

If the Extension object for that context has not yet been created and the 'createIfNotInitalized' flag has been set to false then returns NULL. If 'createIfNotInitalized' is true then the Extensions object is automatically created. However, in this case the extension object will only be created with the graphics context associated with ContextID..

const std::string& osg::FragmentProgram::getFragmentProgram ( ) const [inline]

Get the fragment program.

GLuint& osg::FragmentProgram::getFragmentProgramID ( unsigned int  contextID) const [inline]

Get the handle to the fragment program id for the current context.

LocalParamList& osg::FragmentProgram::getLocalParameters ( ) [inline]

Get list of Program Parameters.

const LocalParamList& osg::FragmentProgram::getLocalParameters ( ) const [inline]

Get const list of Program Parameters.

MatrixList& osg::FragmentProgram::getMatrices ( ) [inline]

Get list of Matrices.

const MatrixList& osg::FragmentProgram::getMatrices ( ) const [inline]

Get list of Matrices.

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

Return the modes associated with this StateAttribute.

Reimplemented from osg::StateAttribute.

References GL_FRAGMENT_PROGRAM_ARB, and osg::StateAttribute::ModeUsage::usesMode().

osg::FragmentProgram::META_StateAttribute ( osg  ,
FragmentProgram  ,
FRAGMENTPROGRAM   
)
virtual void osg::FragmentProgram::releaseGLObjects ( State state = 0) const [virtual]

release an OpenGL objects in specified graphics context if State object is passed, otherwise release OpenGL objects for all graphics context if State object pointer == NULL.

Reimplemented from osg::StateAttribute.

virtual void osg::FragmentProgram::resizeGLObjectBuffers ( unsigned int  maxSize) [virtual]

Resize any per context GLObject buffers to specified size.

Reimplemented from osg::StateAttribute.

static void osg::FragmentProgram::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.

void osg::FragmentProgram::setFragmentProgram ( const std::string &  program) [inline]

Set the fragment program using C++ style string.

void osg::FragmentProgram::setFragmentProgram ( const char *  program) [inline]

Set the fragment program using a C style string.

void osg::FragmentProgram::setLocalParameters ( const LocalParamList lpl) [inline]

Set list of Program Parameters.

void osg::FragmentProgram::setMatrices ( const MatrixList matrices) [inline]

Set list of Matrices.

void osg::FragmentProgram::setMatrix ( const GLenum  mode,
const Matrix matrix 
) [inline]

Matrix.

void osg::FragmentProgram::setProgramLocalParameter ( const GLuint  index,
const Vec4 p 
) [inline]

Set Program Parameters.


Member Data Documentation

std::string osg::FragmentProgram::_fragmentProgram [protected]

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

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Generated at Sun Jan 8 2012 13:16:09 for the OpenSceneGraph by doxygen 1.7.4.