class SG_EXPORT osg::State

State class for managing a state stack.

Inheritance:

Public Methods

State()

virtual ~State()

void pushStateSet(const StateSet* dstate)

push stateset onto state stack

void popStateSet()

pop drawstate off state stack

void captureCurrentState(StateSet& stateset) const

copy the modes and attributes which captures the current state

void reset()

reset the state object to an empty stack

inline const bool applyMode(const StateAttribute::GLMode mode, const bool enabled)

apply an OpenGL mode if required.

inline const bool applyAttribute(const StateAttribute* attribute)

apply an attribute if required.

inline void applyProjectionMatrix(const osg::Matrix* matrix)

const osg::Matrix& getProjectionMatrix() const

inline void applyModelViewMatrix(const osg::Matrix* matrix)

const osg::Matrix& getModelViewMatrix() const

ClippingVolume getClippingVolume() const

void apply(const StateSet* dstate)

apply stateset

void apply()

apply the state

void haveAppliedMode(const StateAttribute::GLMode mode, const StateAttribute::GLModeValue value)

mode has been set externally, update state to reflect this setting

void haveAppliedMode(const StateAttribute::GLMode mode)

mode has been set externally, therefore dirty the associated mode in osg::State so it is applied on next call to osg::State::apply()

void haveAppliedAttribute(const StateAttribute* attribute)

attribute has been applied externally, update state to reflect this setting

void haveAppliedAttribute(const StateAttribute::Type type)

attribute has been applied externally, and therefore this attribute type has been dirtied and will need to be re-appplied on next osg::Stateapply().

inline void setContextID(unsigned int contextID)

Set the current OpenGL context uniqueID.

inline const unsigned int getContextID() const

Get the current OpenGL context unique ID

inline void setFrameStamp(FrameStamp* fs)

Set the frame stamp for the current frame

inline const FrameStamp* getFrameStamp() const

Set the frame stamp for the current frame

inline void setDisplaySettings(DisplaySettings* vs)

Set the DisplaySettings.

inline const DisplaySettings* getDisplaySettings() const

Get the DisplaySettings

Inherited from Referenced:

Public Methods

inline Referenced& operator = (Referenced&)

inline void ref() const

inline void unref() const

inline void unref_nodelete() const

inline const int referenceCount() const

Protected Fields

mutable int _refCount

Documentation

State class for managing a state stack. Lazy state updating is used to minimize state changes.

State()

virtual ~State()

void pushStateSet(const StateSet* dstate)

push stateset onto state stack

void popStateSet()

pop drawstate off state stack

void captureCurrentState(StateSet& stateset) const

copy the modes and attributes which captures the current state

void reset()

reset the state object to an empty stack

inline const bool applyMode(const StateAttribute::GLMode mode, const bool enabled)

apply an OpenGL mode if required.

inline const bool applyAttribute(const StateAttribute* attribute)

apply an attribute if required.

inline void applyProjectionMatrix(const osg::Matrix* matrix)

const osg::Matrix& getProjectionMatrix() const

inline void applyModelViewMatrix(const osg::Matrix* matrix)

const osg::Matrix& getModelViewMatrix() const

ClippingVolume getClippingVolume() const

void apply(const StateSet* dstate)

apply stateset

void apply()

apply the state

void haveAppliedMode(const StateAttribute::GLMode mode, const StateAttribute::GLModeValue value)

mode has been set externally, update state to reflect this setting

void haveAppliedMode(const StateAttribute::GLMode mode)

mode has been set externally, therefore dirty the associated mode in osg::State so it is applied on next call to osg::State::apply()

void haveAppliedAttribute(const StateAttribute* attribute)

attribute has been applied externally, update state to reflect this setting

void haveAppliedAttribute(const StateAttribute::Type type)

attribute has been applied externally, and therefore this attribute type has been dirtied and will need to be re-appplied on next osg::Stateapply(). note, if you have an osg::StateAttribute which you have applied externally then use the have_applied(attribute) method as this will the osg::State to track the current state more accuratly and enable lazy state updating such that only changed state will be applied.

inline void setContextID(unsigned int contextID)

Set the current OpenGL context uniqueID. Note, it is the application developers responsibility to set up unique ID for each OpenGL context. This value is then used by osg::StateAttribure's and osg::Drawable's to help manage OpenGL display list and texture binds appropriate for each context.

inline const unsigned int getContextID() const

Get the current OpenGL context unique ID

inline void setFrameStamp(FrameStamp* fs)

Set the frame stamp for the current frame

inline const FrameStamp* getFrameStamp() const

Set the frame stamp for the current frame

inline void setDisplaySettings(DisplaySettings* vs)

Set the DisplaySettings. Note, nothing is applied, the visual settings are just used used in the State object to pass the current visual settings to Drawables during rendering.

inline const DisplaySettings* getDisplaySettings() const

Get the DisplaySettings

ModeStack()

bool changed

bool last_applied_value

bool global_default_value

ValueVec valueVec

AttributeStack()

bool changed

apply an attribute if required, passing in attribute and appropriate attribute stack

const StateAttribute* last_applied_attribute

ref_ptr<StateAttribute> global_default_attribute

AttributeVec attributeVec

This class has no child classes.

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