openscenegraph
osg::StencilTwoSided Class Reference

#include <StencilTwoSided>

Inheritance diagram for osg::StencilTwoSided:
osg::StateAttribute osg::Object osg::Referenced

Public Types

enum  Face { FRONT = 0 , BACK = 1 }
enum  Function {
  NEVER = GL_NEVER , LESS = GL_LESS , EQUAL = GL_EQUAL , LEQUAL = GL_LEQUAL ,
  GREATER = GL_GREATER , NOTEQUAL = GL_NOTEQUAL , GEQUAL = GL_GEQUAL , ALWAYS = GL_ALWAYS
}
enum  Operation {
  KEEP = GL_KEEP , ZERO = GL_ZERO , REPLACE = GL_REPLACE , INCR = GL_INCR ,
  DECR = GL_DECR , INVERT = GL_INVERT , INCR_WRAP = GL_INCR_WRAP , DECR_WRAP = GL_DECR_WRAP
}
Public Types inherited from osg::StateAttribute
enum  Values {
  OFF = 0x0 , ON = 0x1 , OVERRIDE = 0x2 , PROTECTED = 0x4 ,
  INHERIT = 0x8
}
enum  Type {
  TEXTURE , POLYGONMODE , POLYGONOFFSET , MATERIAL ,
  ALPHAFUNC , ANTIALIAS , COLORTABLE , CULLFACE ,
  FOG , FRONTFACE , LIGHT , POINT ,
  LINEWIDTH , LINESTIPPLE , POLYGONSTIPPLE , SHADEMODEL ,
  TEXENV , TEXENVFILTER , TEXGEN , TEXMAT ,
  LIGHTMODEL , BLENDFUNC , BLENDEQUATION , LOGICOP ,
  STENCIL , COLORMASK , DEPTH , VIEWPORT ,
  SCISSOR , BLENDCOLOR , MULTISAMPLE , CLIPPLANE ,
  COLORMATRIX , VERTEXPROGRAM , FRAGMENTPROGRAM , POINTSPRITE ,
  PROGRAM , CLAMPCOLOR , HINT , SAMPLEMASKI ,
  PRIMITIVERESTARTINDEX , CLIPCONTROL , VALIDATOR , VIEWMATRIXEXTRACTOR ,
  OSGNV_PARAMETER_BLOCK , OSGNVEXT_TEXTURE_SHADER , OSGNVEXT_VERTEX_PROGRAM , OSGNVEXT_REGISTER_COMBINERS ,
  OSGNVCG_PROGRAM , OSGNVSLANG_PROGRAM , OSGNVPARSE_PROGRAM_PARSER , UNIFORMBUFFERBINDING ,
  TRANSFORMFEEDBACKBUFFERBINDING , ATOMICCOUNTERBUFFERBINDING , PATCH_PARAMETER , FRAME_BUFFER_OBJECT ,
  VERTEX_ATTRIB_DIVISOR , SHADERSTORAGEBUFFERBINDING , INDIRECTDRAWBUFFERBINDING , VIEWPORTINDEXED ,
  DEPTHRANGEINDEXED , SCISSORINDEXED , BINDIMAGETEXTURE , SAMPLER ,
  CAPABILITY = 100
}
typedef GLenum GLMode
typedef unsigned int GLModeValue
typedef unsigned int OverrideValue
typedef std::pair< Type, unsigned int > TypeMemberPair
typedef std::vector< StateSet * > ParentList
typedef osg::StateAttributeCallback Callback
Public Types inherited from osg::Object
enum  DataVariance { DYNAMIC , STATIC , UNSPECIFIED }

Public Member Functions

 StencilTwoSided ()
 StencilTwoSided (const StencilTwoSided &stencil, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
 META_StateAttribute (osg, StencilTwoSided, STENCIL)
virtual int compare (const StateAttribute &sa) const
virtual bool getModeUsage (StateAttribute::ModeUsage &usage) const
void setFunction (Face face, Function func, int ref, unsigned int mask)
void setFunction (Face face, Function func)
Function getFunction (Face face) const
void setFunctionRef (Face face, int ref)
int getFunctionRef (Face face) const
void setFunctionMask (Face face, unsigned int mask)
unsigned int getFunctionMask (Face face) const
void setOperation (Face face, Operation sfail, Operation zfail, Operation zpass)
void setStencilFailOperation (Face face, Operation sfail)
Operation getStencilFailOperation (Face face) const
void setStencilPassAndDepthFailOperation (Face face, Operation zfail)
Operation getStencilPassAndDepthFailOperation (Face face) const
void setStencilPassAndDepthPassOperation (Face face, Operation zpass)
Operation getStencilPassAndDepthPassOperation (Face face) const
void setWriteMask (Face face, unsigned int mask)
unsigned int getWriteMask (Face face) const
virtual void apply (State &state) const
Public Member Functions inherited from osg::StateAttribute
 StateAttribute ()
 StateAttribute (const StateAttribute &sa, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
virtual ObjectcloneType () const =0
virtual Objectclone (const CopyOp &) const =0
virtual bool isSameKindAs (const Object *obj) const
virtual const char * libraryName () const
virtual const char * className () const
virtual StateAttributeasStateAttribute ()
virtual const StateAttributeasStateAttribute () const
virtual TextureasTexture ()
virtual const TextureasTexture () const
virtual Type getType () const =0
virtual unsigned int getMember () const
TypeMemberPair getTypeMemberPair () const
virtual bool isTextureAttribute () const
bool operator< (const StateAttribute &rhs) const
bool operator== (const StateAttribute &rhs) const
bool operator!= (const StateAttribute &rhs) const
const ParentListgetParents () const
StateSetgetParent (unsigned int i)
const StateSetgetParent (unsigned int i) const
unsigned int getNumParents () const
void setShaderComponent (ShaderComponent *sc)
ShaderComponentgetShaderComponent ()
const ShaderComponentgetShaderComponent () const
virtual bool checkValidityOfAssociatedModes (osg::State &) const
void setUpdateCallback (StateAttributeCallback *uc)
StateAttributeCallbackgetUpdateCallback ()
const StateAttributeCallbackgetUpdateCallback () const
void setEventCallback (StateAttributeCallback *ec)
StateAttributeCallbackgetEventCallback ()
const StateAttributeCallbackgetEventCallback () const
virtual void compileGLObjects (State &) const
virtual void resizeGLObjectBuffers (unsigned int)
virtual void releaseGLObjects (State *=0) const
Public Member Functions inherited from osg::Object
 Object ()
 Object (bool threadSafeRefUnref)
 Object (const Object &, const CopyOp &copyop=CopyOp::SHALLOW_COPY)
std::string getCompoundClassName () const
virtual NodeasNode ()
virtual const NodeasNode () const
virtual NodeVisitorasNodeVisitor ()
virtual const NodeVisitorasNodeVisitor () const
virtual StateSetasStateSet ()
virtual const StateSetasStateSet () const
virtual UniformasUniform ()
virtual const UniformasUniform () const
virtual CameraasCamera ()
virtual const CameraasCamera () const
virtual DrawableasDrawable ()
virtual const DrawableasDrawable () const
virtual CallbackasCallback ()
virtual const CallbackasCallback () const
virtual CallbackObjectasCallbackObject ()
virtual const CallbackObjectasCallbackObject () const
virtual UserDataContainerasUserDataContainer ()
virtual const UserDataContainerasUserDataContainer () const
virtual ValueObjectasValueObject ()
virtual const ValueObjectasValueObject () const
virtual ImageasImage ()
virtual const ImageasImage () const
virtual void setThreadSafeRefUnref (bool threadSafe)
virtual void setName (const std::string &name)
void setName (const char *name)
const std::string & getName () const
void setDataVariance (DataVariance dv)
DataVariance getDataVariance () const
virtual void computeDataVariance ()
void setUserDataContainer (osg::UserDataContainer *udc)
template<class T>
void setUserDataContainer (const ref_ptr< T > &udc)
osg::UserDataContainergetUserDataContainer ()
const osg::UserDataContainergetUserDataContainer () const
osg::UserDataContainergetOrCreateUserDataContainer ()
virtual void setUserData (Referenced *obj)
template<class T>
void setUserData (const ref_ptr< T > &ud)
virtual ReferencedgetUserData ()
virtual const ReferencedgetUserData () const
template<typename T>
bool getUserValue (const std::string &name, T &value) const
template<typename T>
void setUserValue (const std::string &name, const T &value)
template<typename T>
BoolValueObject UCharValueObject UShortValueObject UIntValueObject DoubleValueObject Vec3fValueObject Vec2dValueObject Vec4dValueObject PlaneValueObject MatrixdValueObject BoundingBoxdValueObject BoundingSpheredValueObject bool getUserValue (const std::string &name, T &value) const
Public Member Functions inherited from osg::Referenced
 Referenced ()
 Referenced (bool threadSafeRefUnref)
 Referenced (const Referenced &)
Referencedoperator= (const Referenced &)
bool getThreadSafeRefUnref () const
OpenThreads::MutexgetRefMutex () const
int ref () const
int unref () const
int unref_nodelete () const
int referenceCount () const
ObserverSetgetObserverSet () const
ObserverSetgetOrCreateObserverSet () const
void addObserver (Observer *observer) const
void removeObserver (Observer *observer) const

Protected Member Functions

virtual ~StencilTwoSided ()
Protected Member Functions inherited from osg::StateAttribute
virtual ~StateAttribute ()
void addParent (osg::StateSet *object)
void removeParent (osg::StateSet *object)
Protected Member Functions inherited from osg::Object
virtual ~Object ()
Protected Member Functions inherited from osg::Referenced
virtual ~Referenced ()
void signalObserversAndDelete (bool signalDelete, bool doDelete) const
void deleteUsingDeleteHandler () const

Protected Attributes

Function _func [2]
int _funcRef [2]
unsigned int _funcMask [2]
Operation _sfail [2]
Operation _zfail [2]
Operation _zpass [2]
unsigned int _writeMask [2]
Protected Attributes inherited from osg::StateAttribute
ParentList _parents
ref_ptr< ShaderComponent_shaderComponent
ref_ptr< StateAttributeCallback_updateCallback
ref_ptr< StateAttributeCallback_eventCallback
Protected Attributes inherited from osg::Object
std::string _name
DataVariance _dataVariance
osg::UserDataContainer_userDataContainer
Protected Attributes inherited from osg::Referenced
OpenThreads::AtomicPtr _observerSet
OpenThreads::Atomic _refCount

Additional Inherited Members

Static Public Member Functions inherited from osg::Referenced
static OpenThreads::MutexgetGlobalReferencedMutex ()
static void setDeleteHandler (DeleteHandler *handler)
static DeleteHandlergetDeleteHandler ()

Detailed Description

Provides OpenGL two sided stencil functionality, also known as separate stencil. It enables to specify different stencil function for front and back facing polygons. Two sided stenciling is used usually to eliminate the need of two rendering passes when using standard stenciling functions. See also

See also
osg::Stencil.

Two sided stenciling is available since OpenGL 2.0. It is also supported by EXT_stencil_two_side extension especially on Nvidia cards. Another extension introduced by ATI is ATI_separate_stencil. However, ATI's extension is limited to have reference and mask value the same for both faces. ATI's extension is currently not supported by the current implementation.

osg::StencilTwoSided does nothing if OpenGL 2.0 or EXT_stencil_two_side are not available.

Member Enumeration Documentation

◆ Face

Enumerator
FRONT 
BACK 

◆ Function

Enumerator
NEVER 
LESS 
EQUAL 
LEQUAL 
GREATER 
NOTEQUAL 
GEQUAL 
ALWAYS 

◆ Operation

Enumerator
KEEP 
ZERO 
REPLACE 
INCR 
DECR 
INVERT 
INCR_WRAP 
DECR_WRAP 

Constructor & Destructor Documentation

◆ StencilTwoSided() [1/2]

osg::StencilTwoSided::StencilTwoSided ( )

◆ StencilTwoSided() [2/2]

osg::StencilTwoSided::StencilTwoSided ( const StencilTwoSided & stencil,
const CopyOp & copyop = CopyOp::SHALLOW_COPY )

Copy constructor using CopyOp to manage deep vs shallow copy.

References osg::CopyOp::SHALLOW_COPY, and StencilTwoSided().

◆ ~StencilTwoSided()

virtual osg::StencilTwoSided::~StencilTwoSided ( )
protectedvirtual

Member Function Documentation

◆ apply()

virtual void osg::StencilTwoSided::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.

◆ compare()

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

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

Implements osg::StateAttribute.

References osg::StateAttribute::StateAttribute().

◆ getFunction()

Function osg::StencilTwoSided::getFunction ( Face face) const
inline

References _func.

◆ getFunctionMask()

unsigned int osg::StencilTwoSided::getFunctionMask ( Face face) const
inline

References _funcMask.

◆ getFunctionRef()

int osg::StencilTwoSided::getFunctionRef ( Face face) const
inline

References _funcRef.

◆ getModeUsage()

virtual bool osg::StencilTwoSided::getModeUsage ( StateAttribute::ModeUsage & ) const
inlinevirtual

Return the modes associated with this StateAttribute.

Reimplemented from osg::StateAttribute.

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

◆ getStencilFailOperation()

Operation osg::StencilTwoSided::getStencilFailOperation ( Face face) const
inline

get the operation when the stencil test fails.

References _sfail.

◆ getStencilPassAndDepthFailOperation()

Operation osg::StencilTwoSided::getStencilPassAndDepthFailOperation ( Face face) const
inline

get the operation when the stencil test passes but the depth test fails.

References _zfail.

◆ getStencilPassAndDepthPassOperation()

Operation osg::StencilTwoSided::getStencilPassAndDepthPassOperation ( Face face) const
inline

get the operation when both the stencil test and the depth test pass.

References _zpass.

◆ getWriteMask()

unsigned int osg::StencilTwoSided::getWriteMask ( Face face) const
inline

References _writeMask.

◆ META_StateAttribute()

osg::StencilTwoSided::META_StateAttribute ( osg ,
StencilTwoSided ,
STENCIL  )

◆ setFunction() [1/2]

void osg::StencilTwoSided::setFunction ( Face face,
Function func )
inline

References _func.

◆ setFunction() [2/2]

void osg::StencilTwoSided::setFunction ( Face face,
Function func,
int ref,
unsigned int mask )
inline

◆ setFunctionMask()

void osg::StencilTwoSided::setFunctionMask ( Face face,
unsigned int mask )
inline

References _funcMask.

◆ setFunctionRef()

void osg::StencilTwoSided::setFunctionRef ( Face face,
int ref )
inline

References _funcRef, and osg::Referenced::ref().

◆ setOperation()

void osg::StencilTwoSided::setOperation ( Face face,
Operation sfail,
Operation zfail,
Operation zpass )
inline

set the operations to apply when the various stencil and depth tests fail or pass. First parameter is to control the operation when the stencil test fails. The second parameter is to control the operation when the stencil test passes, but depth test fails. The third parameter controls the operation when both the stencil test and depth pass. Ordering of parameter is the same as if using glStencilOp(,,).

References _sfail, _zfail, and _zpass.

◆ setStencilFailOperation()

void osg::StencilTwoSided::setStencilFailOperation ( Face face,
Operation sfail )
inline

set the operation when the stencil test fails.

References _sfail.

◆ setStencilPassAndDepthFailOperation()

void osg::StencilTwoSided::setStencilPassAndDepthFailOperation ( Face face,
Operation zfail )
inline

set the operation when the stencil test passes but the depth test fails.

References _zfail.

◆ setStencilPassAndDepthPassOperation()

void osg::StencilTwoSided::setStencilPassAndDepthPassOperation ( Face face,
Operation zpass )
inline

set the operation when both the stencil test and the depth test pass.

References _zpass.

◆ setWriteMask()

void osg::StencilTwoSided::setWriteMask ( Face face,
unsigned int mask )
inline

References _writeMask.

Member Data Documentation

◆ _func

Function osg::StencilTwoSided::_func[2]
protected

◆ _funcMask

unsigned int osg::StencilTwoSided::_funcMask[2]
protected

◆ _funcRef

int osg::StencilTwoSided::_funcRef[2]
protected

◆ _sfail

Operation osg::StencilTwoSided::_sfail[2]
protected

◆ _writeMask

unsigned int osg::StencilTwoSided::_writeMask[2]
protected

Referenced by getWriteMask(), and setWriteMask().

◆ _zfail

Operation osg::StencilTwoSided::_zfail[2]
protected

◆ _zpass

Operation osg::StencilTwoSided::_zpass[2]
protected

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