/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield * * This library is open source and may be redistributed and/or modified under * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or * (at your option) any later version. The full license is in LICENSE file * included with this distribution, and on the openscenegraph.org website. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * OpenSceneGraph Public License for more details. */ #ifndef OSG_STATESET #define OSG_STATESET 1 #include #include #include #include #include #include namespace osg { /** Encapsulates OpenGL state modes and attributes. Used to specific textures etc of osg::Drawable's which hold references to a single osg::StateSet. StateSet can be shared between Drawable's and is recommend if possible as it minimize expensive state changes in the graphics pipeline. */ class SG_EXPORT StateSet : public Object { public : StateSet(); StateSet(const StateSet&,const CopyOp& copyop=CopyOp::SHALLOW_COPY); virtual Object* cloneType() const { return new StateSet(); } virtual Object* clone(const CopyOp& copyop) const { return new StateSet(*this,copyop); } virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast(obj)!=NULL; } virtual const char* libraryName() const { return "osg"; } virtual const char* className() const { return "StateSet"; } /** return -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs.*/ int compare(const StateSet& rhs,bool compareAttributeContents=false) const; bool operator < (const StateSet& rhs) const { return compare(rhs)<0; } bool operator == (const StateSet& rhs) const { return compare(rhs)==0; } bool operator != (const StateSet& rhs) const { return compare(rhs)!=0; } /** set all the modes to on or off so that it defines a complete state, typically used for a default global state.*/ void setGlobalDefaults(); /** set all the modes to inherit, typically used to signify nodes which inherit all of their modes for the global state.*/ void setAllToInherit(); /** merge this stateset with stateset rhs, this overrides * the rhs if OVERRIDE is specified, otherwise rhs takes precedence.*/ void merge(const StateSet& rhs); /** a container to map GLModes to their respective GLModeValues.*/ typedef std::map ModeList; /** set this StateSet to contain specified GLMode and value.*/ void setMode(StateAttribute::GLMode mode, StateAttribute::GLModeValue value); /** set this StateSet to inherit specified GLMode type from parents. * has the effect of deleting any GlMode of specified type from StateSet.*/ void setModeToInherit(StateAttribute::GLMode mode); /** get specified GLModeValue for specified GLMode. * returns INHERIT if no GLModeValue is contained within StateSet.*/ StateAttribute::GLModeValue getMode(StateAttribute::GLMode mode) const; /** return the list of all GLModes contained in this StateSet.*/ inline ModeList& getModeList() { return _modeList; } /** return the const list of all GLModes contained in this const StateSet.*/ inline const ModeList& getModeList() const { return _modeList; } /** simple pairing between an attribute and its override flag.*/ typedef std::pair,StateAttribute::OverrideValue> RefAttributePair; /** a container to map StateAttribyte::Types to their respective RefAttributePair.*/ typedef std::map AttributeList; /** set this StateSet to contain specified attribute and override flag.*/ void setAttribute(StateAttribute *attribute, StateAttribute::OverrideValue value=StateAttribute::OFF); /** set this StateSet to contain specified attribute and set the associated GLMode's to specified value.*/ void setAttributeAndModes(StateAttribute *attribute, StateAttribute::GLModeValue value=StateAttribute::ON); /** set this StateSet to inherit specified attribute type from parents. * has the effect of deleting any state attributes of specified type from StateSet.*/ void setAttributeToInherit(StateAttribute::Type type); /** get specified StateAttribute for specified type. * returns NULL if no type is contained within StateSet.*/ StateAttribute* getAttribute(StateAttribute::Type type); /** get specified const StateAttribute for specified type. * returns NULL if no type is contained within const StateSet.*/ const StateAttribute* getAttribute(StateAttribute::Type type) const; /** get specified RefAttributePair for specified type. * returns NULL if no type is contained within StateSet.*/ const RefAttributePair* getAttributePair(StateAttribute::Type type) const; /** return the list of all StateAttributes contained in this StateSet.*/ inline AttributeList& getAttributeList() { return _attributeList; } /** return the const list of all StateAttributes contained in this const StateSet.*/ inline const AttributeList& getAttributeList() const { return _attributeList; } typedef std::vector TextureModeList; /** set this StateSet to contain specified GLMode and value.*/ void setTextureMode(unsigned int unit,StateAttribute::GLMode mode, StateAttribute::GLModeValue value); /** set this StateSet to inherit specified GLMode type from parents. * has the effect of deleting any GlMode of specified type from StateSet.*/ void setTextureModeToInherit(unsigned int unit,StateAttribute::GLMode mode); /** get specified GLModeValue for specified GLMode. * returns INHERIT if no GLModeValue is contained within StateSet.*/ StateAttribute::GLModeValue getTextureMode(unsigned int unit,StateAttribute::GLMode mode) const; /** return the list of all Texture related GLModes contained in this StateSet.*/ inline TextureModeList& getTextureModeList() { return _textureModeList; } /** return the const list of all Texture related GLModes contained in this const StateSet.*/ inline const TextureModeList& getTextureModeList() const { return _textureModeList; } typedef std::vector TextureAttributeList; /** set this StateSet to contain specified attribute and override flag.*/ void setTextureAttribute(unsigned int unit,StateAttribute *attribute, StateAttribute::OverrideValue value=StateAttribute::OFF); /** set this StateSet to contain specified attribute and set the associated GLMode's to specified value.*/ void setTextureAttributeAndModes(unsigned int unit,StateAttribute *attribute, StateAttribute::GLModeValue value=StateAttribute::ON); /** set this StateSet to inherit specified attribute type from parents. * has the effect of deleting any state attributes of specified type from StateSet.*/ void setTextureAttributeToInherit(unsigned int unit,StateAttribute::Type type); /** get specified Texture related StateAttribute for specified type. * returns NULL if no type is contained within StateSet.*/ StateAttribute* getTextureAttribute(unsigned int unit,StateAttribute::Type type); /** get specified Texture related const StateAttribute for specified type. * returns NULL if no type is contained within const StateSet.*/ const StateAttribute* getTextureAttribute(unsigned int unit,StateAttribute::Type type) const; /** get specified Texture related RefAttributePair for specified type. * returns NULL if no type is contained within StateSet.*/ const RefAttributePair* getTextureAttributePair(unsigned int unit,StateAttribute::Type type) const; /** return the list of all Texture related StateAttributes contained in this StateSet.*/ inline TextureAttributeList& getTextureAttributeList() { return _textureAttributeList; } /** return the const list of all Texture related StateAttributes contained in this const StateSet.*/ inline const TextureAttributeList& getTextureAttributeList() const { return _textureAttributeList; } void setAssociatedModes(const StateAttribute* attribute, StateAttribute::GLModeValue value); void setAssociatedTextureModes(unsigned int unit,const StateAttribute* attribute, StateAttribute::GLModeValue value); enum RenderingHint { DEFAULT_BIN = 0, OPAQUE_BIN = 1, TRANSPARENT_BIN = 2 }; /** set the RenderingHint of the StateSet. * RenderingHint is used by osgUtil::Renderer to determine which * draw bin to drop associated osg::Drawables in. For opaque * objects OPAQUE_BIN would typical used, which TRANSPARENT_BIN * should be used for objects which need to be depth sorted.*/ void setRenderingHint(int hint); /** get the RenderingHint of the StateSet.*/ inline int getRenderingHint() const { return _renderingHint; } enum RenderBinMode { INHERIT_RENDERBIN_DETAILS, USE_RENDERBIN_DETAILS, OVERRIDE_RENDERBIN_DETAILS, ENCLOSE_RENDERBIN_DETAILS }; /** set the render bin details.*/ void setRenderBinDetails(int binNum,const std::string& binName,RenderBinMode mode=USE_RENDERBIN_DETAILS); /** set the render bin details to inherit.*/ void setRenderBinToInherit(); /** get the render bin mode.*/ inline RenderBinMode getRenderBinMode() const { return _binMode; } /** get whether the render bin details are set and should be used.*/ inline bool useRenderBinDetails() const { return _binMode!=INHERIT_RENDERBIN_DETAILS; } /** get the render bin number.*/ inline int getBinNumber() const { return _binNum; } /** get the render bin name.*/ inline const std::string& getBinName() const { return _binName; } /** call compile on all StateAttributes contained within this StateSet.*/ void compile(State& state) const; protected : virtual ~StateSet(); StateSet& operator = (const StateSet&) { return *this; } ModeList _modeList; AttributeList _attributeList; TextureModeList _textureModeList; TextureAttributeList _textureAttributeList; inline ModeList& getOrCreateTextureModeList(unsigned int unit) { if (unit>=_textureModeList.size()) _textureModeList.resize(unit+1); return _textureModeList[unit]; } inline AttributeList& getOrCreateTextureAttributeList(unsigned int unit) { if (unit>=_textureAttributeList.size()) _textureAttributeList.resize(unit+1); return _textureAttributeList[unit]; } int compareModes(const ModeList& lhs,const ModeList& rhs); int compareAttributePtrs(const AttributeList& lhs,const AttributeList& rhs); int compareAttributeContents(const AttributeList& lhs,const AttributeList& rhs); void setMode(ModeList& modeList,StateAttribute::GLMode mode, StateAttribute::GLModeValue value); void setModeToInherit(ModeList& modeList,StateAttribute::GLMode mode); StateAttribute::GLModeValue getMode(const ModeList& modeList,StateAttribute::GLMode mode) const; void setAssociatedModes(ModeList& modeList,const StateAttribute* attribute, StateAttribute::GLModeValue value); void setAttribute(AttributeList& attributeList,StateAttribute *attribute, const StateAttribute::OverrideValue value=StateAttribute::OFF); StateAttribute* getAttribute(AttributeList& attributeList,const StateAttribute::Type type); const StateAttribute* getAttribute(const AttributeList& attributeList,const StateAttribute::Type type) const; const RefAttributePair* getAttributePair(const AttributeList& attributeList,const StateAttribute::Type type) const; int _renderingHint; RenderBinMode _binMode; int _binNum; std::string _binName; }; } #endif