osgGL2::ProgramObject Class Reference

Inheritance diagram for osgGL2::ProgramObject:

List of all members.


Public Member Functions
	ProgramObject ()
	ProgramObject (const ProgramObject &rhs, const osg::CopyOp &copyop=osg::CopyOp::SHALLOW_COPY)
	META_StateAttribute (osgGL2, ProgramObject, PROGRAMOBJECT)
virtual int	compare (const osg::StateAttribute &sa) const
virtual void	apply (osg::State &state) const
virtual void	compileGLObjects (osg::State &state) const
virtual void	releaseGLObjects (osg::State *state=0) const
void	dirtyProgramObject ()
void	dirtyShaderObjects ()
void	enable (bool enabled)
void	addShader (ShaderObject *shadObj)
void	setUniform (const char *uniformName, int value)
void	setUniform (const char *uniformName, float value)
void	setUniform (const char *uniformName, osg::Vec2 value)
void	setUniform (const char *uniformName, osg::Vec3 value)
void	setUniform (const char *uniformName, osg::Vec4 value)
void	setSampler (const char *uniformName, int value)
Static Public Member Functions
static void	deleteObject (unsigned int contextID, GLhandleARB handle)
static void	flushDeletedGL2Objects (unsigned int contextID, double currentTime, double &availableTime)
Protected Types
typedef std::vector< ShaderObjectPtr >	ShaderObjectList
Protected Member Functions
virtual	~ProgramObject ()
PerContextProgObj *	getPCPO (unsigned int contextID) const
void	updateUniforms (int frameNumber) const
Protected Attributes
bool	_enabled
ShaderObjectList	_shaderObjectList
osg::buffered_value< osg::ref_ptr< PerContextProgObj > >	_pcpoList
int	_frameNumberOfLastPCPOUpdate
UniformValueList	_univalList
Classes
class	PerContextProgObj

Detailed Description

osgGL2::ProgramObject is an application-level abstraction of the OpenGL Shading Language glProgramObject. It is an osg::StateAttribute that, when applied, will install an OGLSL shader program for subsequent rendering. osgGL2::ShaderObjects containing the actual shader source code are attached to the ProgramObject, which will then manage the compilation, linking, and installation of the GL shader program. ProgramObject will automatically manage per-context instancing of the internal objects, if that is necessary for a particular display configuration.

Member Typedef Documentation

typedef std::vector< ShaderObjectPtr > osgGL2::ProgramObject::ShaderObjectList [protected]

Constructor & Destructor Documentation

osgGL2::ProgramObject::ProgramObject ( )

osgGL2::ProgramObject::ProgramObject ( const ProgramObject & rhs,

const osg::CopyOp & copyop = osg::CopyOp::SHALLOW_COPY

)

Copy constructor using CopyOp to manage deep vs shallow copy.

virtual osgGL2::ProgramObject::~ProgramObject ( ) [protected, virtual]

Member Function Documentation

void osgGL2::ProgramObject::addShader ( ShaderObject * shadObj )

Attach a ShaderObject to this ProgramObject

virtual void osgGL2::ProgramObject::apply ( osg::State & state ) const [virtual]

If enabled, install our shader program in the GL pipeline, performing any shader program rebuild operations that might be pending.

virtual int osgGL2::ProgramObject::compare ( const osg::StateAttribute & sa ) const [virtual]

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

virtual void osgGL2::ProgramObject::compileGLObjects ( osg::State & state ) const [virtual]

static void osgGL2::ProgramObject::deleteObject ( unsigned int contextID,

GLhandleARB handle

) [static]

Mark internal GL objects for deletion. Deletion requests are queued until they can be executed in the proper GL context.

void osgGL2::ProgramObject::dirtyProgramObject ( )

Mark us as "dirty" and in need of relinking.

void osgGL2::ProgramObject::dirtyShaderObjects ( )

Mark our attached ShaderObjects as "dirty" and in need of recompilation.

void osgGL2::ProgramObject::enable ( bool enabled ) [inline]

An override to control whether the shader program will actually be installed when OSG attempts to apply()

static void osgGL2::ProgramObject::flushDeletedGL2Objects ( unsigned int contextID,

double currentTime,

double & availableTime

) [static]

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

PerContextProgObj* osgGL2::ProgramObject::getPCPO ( unsigned int contextID ) const [protected]

Get the PCPO for a particular GL context

osgGL2::ProgramObject::META_StateAttribute ( osgGL2 ,

ProgramObject ,

PROGRAMOBJECT

)

virtual void osgGL2::ProgramObject::releaseGLObjects ( osg::State * state = 0 ) const [virtual]

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

void osgGL2::ProgramObject::setSampler ( const char * uniformName,

int value

) [inline]

void osgGL2::ProgramObject::setUniform ( const char * uniformName,

osg::Vec4 value

)

void osgGL2::ProgramObject::setUniform ( const char * uniformName,

osg::Vec3 value

)

void osgGL2::ProgramObject::setUniform ( const char * uniformName,

osg::Vec2 value

)

void osgGL2::ProgramObject::setUniform ( const char * uniformName,

float value

)

void osgGL2::ProgramObject::setUniform ( const char * uniformName,

int value

)

Assign a value to a ProgramObject's uniform variable

void osgGL2::ProgramObject::updateUniforms ( int frameNumber ) const [protected]

Per frame, copy the list of pending UniformValue updates to each of the PCPOs.