class OSGGL2_EXPORT osgGL2::ProgramObject

osgGL2::ProgramObject is an application-level abstraction of the OpenGL Shading Language glProgramObject.

Inheritance:

Public Methods

ProgramObject()

ProgramObject(const ProgramObject& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY)

Copy constructor using CopyOp to manage deep vs shallow copy

META_StateAttribute(osgGL2, ProgramObject, PROGRAMOBJECT)

virtual int compare(const osg::StateAttribute& sa) const

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

virtual void apply(osg::State& state) const

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

virtual void compileGLObjects(osg::State& state) const

virtual void releaseGLObjects(osg::State* state=0) const

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 dirtyProgramObject()

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

void dirtyShaderObjects()

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

void enable( bool enabled )

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

void addShader( ShaderObject* shadObj )

Attach a ShaderObject to this ProgramObject

void setUniform( const char* uniformName, int value )

Assign a value to a ProgramObject's uniform variable

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 )

inline void setSampler( const char* uniformName, int value )

static void deleteObject(unsigned int contextID, GLhandleARB handle)

Mark internal GL objects for deletion.

static void flushDeletedGL2Objects(unsigned int contextID, double currentTime, double& availableTime)

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

Protected Classes

class PerContextProgObj: public osg::Referenced

PCPO is an OSG-internal encapsulation of glProgramObjects per-GL context.

Protected Fields

bool _enabled

ShaderObjectList _shaderObjectList

mutable osg::buffered_value< osg::ref_ptr<PerContextProgObj> > _pcpoList

mutable int _frameNumberOfLastPCPOUpdate

mutable UniformValueList _univalList

Protected Methods

virtual ~ProgramObject()

PerContextProgObj* getPCPO(unsigned int contextID) const

Get the PCPO for a particular GL context

void updateUniforms( int frameNumber ) const

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

Protected

typedef std::vector< ShaderObjectPtr > ShaderObjectList

Documentation

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.

ProgramObject()

ProgramObject(const ProgramObject& rhs, const osg::CopyOp& copyop=osg::CopyOp::SHALLOW_COPY)

Copy constructor using CopyOp to manage deep vs shallow copy

META_StateAttribute(osgGL2, ProgramObject, PROGRAMOBJECT)

virtual int compare(const osg::StateAttribute& sa) const

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

virtual void apply(osg::State& state) const

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

virtual void compileGLObjects(osg::State& state) const

virtual void releaseGLObjects(osg::State* state=0) const

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 dirtyProgramObject()

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

void dirtyShaderObjects()

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

void enable( bool enabled )

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

void addShader( ShaderObject* shadObj )

Attach a ShaderObject to this ProgramObject

void setUniform( const char* uniformName, int value )

Assign a value to a ProgramObject's uniform variable

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 )

inline void setSampler( const char* uniformName, int value )

static void deleteObject(unsigned int contextID, GLhandleARB handle)

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

static void flushDeletedGL2Objects(unsigned int contextID, double currentTime, double& availableTime)

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

virtual ~ProgramObject()

PerContextProgObj* getPCPO(unsigned int contextID) const

Get the PCPO for a particular GL context

void updateUniforms( int frameNumber ) const

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

bool _enabled

typedef std::vector< ShaderObjectPtr > ShaderObjectList

ShaderObjectList _shaderObjectList

mutable osg::buffered_value< osg::ref_ptr<PerContextProgObj> > _pcpoList

mutable int _frameNumberOfLastPCPOUpdate

mutable UniformValueList _univalList

This class has no child classes.

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