1352 lines
50 KiB
C++
1352 lines
50 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2003 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSG_STATE
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#define OSG_STATE 1
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#include <osg/Export>
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#include <osg/StateSet>
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#include <osg/Matrix>
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#include <osg/Uniform>
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#include <osg/FrameStamp>
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#include <osg/DisplaySettings>
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#include <osg/Polytope>
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#include <osg/Viewport>
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#include <vector>
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#include <map>
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#include <string>
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#ifndef GL_TEXTURE0
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#define GL_TEXTURE0 0x84C0
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#endif
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#ifndef GL_FOG_COORDINATE_ARRAY
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#ifdef GL_FOG_COORDINATE_ARRAY_EXT
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#define GL_FOG_COORDINATE_ARRAY GL_FOG_COORDINATE_ARRAY_EXT
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#else
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#define GL_FOG_COORDINATE_ARRAY 0x8457
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#endif
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#endif
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#ifndef GL_SECONDARY_COLOR_ARRAY
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#ifdef GL_SECONDARY_COLOR_ARRAY_EXT
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#define GL_SECONDARY_COLOR_ARRAY GL_SECONDARY_COLOR_ARRAY_EXT
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#else
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#define GL_SECONDARY_COLOR_ARRAY 0x845E
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#endif
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#endif
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namespace osg {
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/** macro for use with osg::StateAttribute::apply methods for detecting and
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* reporting OpenGL error messages.*/
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#define OSG_GL_DEBUG(message) \
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if (state.getFineGrainedErrorDetection()) \
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{ \
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GLenum errorNo = glGetError(); \
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if (errorNo!=GL_NO_ERROR) \
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{ \
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osg::notify(WARN)<<"Warning: detected OpenGL error '"<<gluErrorString(errorNo)<<" "<<message<<endl; \
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}\
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}
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/** Encapsulates the current applied OpenGL modes, attributes and vertex arrays settings,.
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* implements lazy state updating and provides accessors for querrying the current state.
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. The venerable Red Book says that "OpenGL is a state machine", and this class
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* represents the OpenGL state in OSG. Furthermore, \c State also has other
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* important features:
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* - It works as a stack of states (see \c pushStateSet() and
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* \c popStateSet()). Manipulating this stack of OpenGL states manually is
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* seldom needed, since OSG does this is the most common situations.
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* - It implements lazy state updating. This means that, if one requests a
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* state change and that particular state is already in the requested stated, no OpenGL
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* call will be made, this ensures that OpenGL pipeline is not stalled by unncessary state changes.
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* - It allows to query the current OpenGL state without calls to \c glGet*(),
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* which typically stall the graphics pipeline (see, for instance,
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* \c captureCurrentState() and \c getModelViewMatrix()).
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*/
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class OSG_EXPORT State : public Referenced
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{
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public :
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State();
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/** Push stateset onto state stack.*/
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void pushStateSet(const StateSet* dstate);
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/** Pop stateset off state stack.*/
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void popStateSet();
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/** pop all statesets off state stack, ensuring it is empty ready for the next frame.
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* Note, to return OpenGL to default state, one should do any state.popAllStatSets(); state.apply().*/
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void popAllStateSets();
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/** Copy the modes and attributes which capture the current state.*/
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void captureCurrentState(StateSet& stateset) const;
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/** reset the state object to an empty stack.*/
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void reset();
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inline const Viewport* getCurrentViewport() const
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{
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return static_cast<const Viewport*>(getLastAppliedAttribute(osg::StateAttribute::VIEWPORT));
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}
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void setInitialViewMatrix(const osg::RefMatrix* matrix);
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inline const osg::Matrix& getInitialViewMatrix() const { return *_initialViewMatrix; }
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inline const osg::Matrix& getInitialInverseViewMatrix() const { return _initialInverseViewMatrix; }
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inline void applyProjectionMatrix(const osg::RefMatrix* matrix)
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{
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if (_projection!=matrix)
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{
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glMatrixMode( GL_PROJECTION );
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if (matrix)
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{
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_projection=matrix;
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glLoadMatrix(matrix->ptr());
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}
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else
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{
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_projection=_identity;
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glLoadIdentity();
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}
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glMatrixMode( GL_MODELVIEW );
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}
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}
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inline const osg::Matrix& getProjectionMatrix() const
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{
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return *_projection;
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}
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inline void applyModelViewMatrix(const osg::RefMatrix* matrix)
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{
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if (_modelView!=matrix)
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{
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if (matrix)
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{
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_modelView=matrix;
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glLoadMatrix(matrix->ptr());
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}
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else
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{
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_modelView=_identity;
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glLoadIdentity();
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}
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}
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}
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const osg::Matrix& getModelViewMatrix() const
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{
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return *_modelView;
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}
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Polytope getViewFrustum() const;
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/** Apply stateset.*/
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void apply(const StateSet* dstate);
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/** Updates the OpenGL state so that it matches the \c StateSet at the
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* top of the stack of <tt>StateSet</tt>s maintained internally by a
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* \c State.
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*/
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void apply();
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inline void setGlobalDefaultModeValue(StateAttribute::GLMode mode,bool enabled)
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{
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ModeStack& ms = _modeMap[mode];
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ms.global_default_value = enabled;
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}
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inline bool getGlobalDefaultModeValue(StateAttribute::GLMode mode)
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{
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return _modeMap[mode].global_default_value;
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}
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/** Apply an OpenGL mode if required. This is a wrapper around
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* \c glEnable() and \c glDisable(), that just actually calls these
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* functions if the \c enabled flag is different than the current
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* state.
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* @return \c true if the state was actually changed. \c false
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* otherwise. Notice that a \c false return does not indicate
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* an error, it just means that the mode was already set to the
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* same value as the \c enabled parameter.
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*/
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inline bool applyMode(StateAttribute::GLMode mode,bool enabled)
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{
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ModeStack& ms = _modeMap[mode];
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ms.changed = true;
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return applyMode(mode,enabled,ms);
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}
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inline void setGlobalDefaultTextureModeValue(unsigned int unit, StateAttribute::GLMode mode,bool enabled)
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{
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ModeMap& modeMap = getOrCreateTextureModeMap(unit);
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ModeStack& ms = modeMap[mode];
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ms.global_default_value = enabled;
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}
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inline bool getGlobalDefaultTextureModeValue(unsigned int unit, StateAttribute::GLMode mode)
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{
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ModeMap& modeMap = getOrCreateTextureModeMap(unit);
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ModeStack& ms = modeMap[mode];
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return ms.global_default_value;
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}
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inline bool applyTextureMode(unsigned int unit, StateAttribute::GLMode mode,bool enabled)
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{
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if (setActiveTextureUnit(unit))
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{
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ModeMap& modeMap = getOrCreateTextureModeMap(unit);
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ModeStack& ms = modeMap[mode];
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ms.changed = true;
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return applyMode(mode,enabled,ms);
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}
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else
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return false;
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}
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inline void setGlobalDefaultAttribute(const StateAttribute* attribute)
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{
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AttributeStack& as = _attributeMap[attribute->getTypeMemberPair()];
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as.global_default_attribute = attribute;
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}
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inline const StateAttribute* getGlobalDefaultAttribute(StateAttribute::Type type, unsigned int member=0)
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{
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AttributeStack& as = _attributeMap[StateAttribute::TypeMemberPair(type,member)];
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return as.global_default_attribute.get();
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}
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/** Apply an attribute if required. */
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inline bool applyAttribute(const StateAttribute* attribute)
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{
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AttributeStack& as = _attributeMap[attribute->getTypeMemberPair()];
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as.changed = true;
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return applyAttribute(attribute,as);
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}
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inline void setGlobalDefaultTextureAttribute(unsigned int unit, const StateAttribute* attribute)
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{
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AttributeMap& attributeMap = getOrCreateTextureAttributeMap(unit);
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AttributeStack& as = attributeMap[attribute->getTypeMemberPair()];
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as.global_default_attribute = attribute;
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}
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inline const StateAttribute* getGlobalDefaultTextureAttribute(unsigned int unit, StateAttribute::Type type, unsigned int member = 0)
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{
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AttributeMap& attributeMap = getOrCreateTextureAttributeMap(unit);
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AttributeStack& as = attributeMap[StateAttribute::TypeMemberPair(type,member)];
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return as.global_default_attribute.get();
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}
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inline bool applyTextureAttribute(unsigned int unit, const StateAttribute* attribute)
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{
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if (setActiveTextureUnit(unit))
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{
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AttributeMap& attributeMap = getOrCreateTextureAttributeMap(unit);
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AttributeStack& as = attributeMap[attribute->getTypeMemberPair()];
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as.changed = true;
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return applyAttribute(attribute,as);
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}
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else
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return false;
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}
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/** Mode has been set externally, update state to reflect this setting.*/
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void haveAppliedMode(StateAttribute::GLMode mode,StateAttribute::GLModeValue value);
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/** Mode has been set externally, therefore dirty the associated mode in osg::State
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* so it is applied on next call to osg::State::apply(..)*/
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void haveAppliedMode(StateAttribute::GLMode mode);
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/** Attribute has been applied externally, update state to reflect this setting.*/
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void haveAppliedAttribute(const StateAttribute* attribute);
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/** Attribute has been applied externally,
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* and therefore this attribute type has been dirtied
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* and will need to be re-applied on next osg::State.apply(..).
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* note, if you have an osg::StateAttribute which you have applied externally
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* then use the have_applied(attribute) method as this will cause the osg::State to
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* track the current state more accurately and enable lazy state updating such
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* that only changed state will be applied.*/
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void haveAppliedAttribute(StateAttribute::Type type, unsigned int member=0);
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/** Get whether the current specified mode is enabled (true) or disabled (false).*/
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bool getLastAppliedMode(StateAttribute::GLMode mode) const;
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/** Get the current specified attribute, return NULL if one has not yet been applied.*/
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const StateAttribute* getLastAppliedAttribute(StateAttribute::Type type, unsigned int member=0) const;
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/** texture Mode has been set externally, update state to reflect this setting.*/
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void haveAppliedTextureMode(unsigned int unit, StateAttribute::GLMode mode,StateAttribute::GLModeValue value);
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/** texture Mode has been set externally, therefore dirty the associated mode in osg::State
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* so it is applied on next call to osg::State::apply(..)*/
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void haveAppliedTextureMode(unsigned int unit, StateAttribute::GLMode mode);
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/** texture Attribute has been applied externally, update state to reflect this setting.*/
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void haveAppliedTextureAttribute(unsigned int unit, const StateAttribute* attribute);
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/** texture Attribute has been applied externally,
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* and therefore this attribute type has been dirtied
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* and will need to be re-appplied on next osg::State.apply(..).
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* note, if you have an osg::StateAttribute which you have applied externally
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* then use the have_applied(attribute) method as this will the osg::State to
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* track the current state more accurately and enable lazy state updating such
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* that only changed state will be applied.*/
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void haveAppliedTextureAttribute(unsigned int unit, StateAttribute::Type type, unsigned int member=0);
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/** Get whether the current specified texture mode is enabled (true) or disabled (false).*/
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bool getLastAppliedTextureMode(unsigned int unit, StateAttribute::GLMode mode) const;
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/** Get the current specified texture attribute, return NULL if one has not yet been applied.*/
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const StateAttribute* getLastAppliedTextureAttribute(unsigned int unit, StateAttribute::Type type, unsigned int member=0) const;
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/** Dirty the modes previously applied in osg::State.*/
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void dirtyAllModes();
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/** Dirty the modes attributes previously applied in osg::State.*/
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void dirtyAllAttributes();
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/** disable the vertex, normal, color, tex coords, secondary color, fog coord and index arrays.*/
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void disableAllVertexArrays();
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/** dirty the vertex, normal, color, tex coords, secondary color, fog coord and index arrays.*/
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void dirtyAllVertexArrays();
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/** Wrapper around glInterleavedArrays(..).
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* also resets the internal array points and modes within osg::State to keep the other
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* vertex array operations consistent. */
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void setInterleavedArrays( GLenum format, GLsizei stride, const GLvoid* pointer);
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/** wrapper around glEnableClientState(GL_VERTEX_ARRAY);glVertexPointer(..);
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* note, only updates values that change.*/
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inline void setVertexPointer( GLint size, GLenum type,
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GLsizei stride, const GLvoid *ptr )
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{
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if (!_vertexArray._enabled || _vertexArray._dirty)
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{
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_vertexArray._enabled = true;
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glEnableClientState(GL_VERTEX_ARRAY);
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}
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//if (_vertexArray._pointer!=ptr || _vertexArray._dirty)
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{
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_vertexArray._pointer=ptr;
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glVertexPointer( size, type, stride, ptr );
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}
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_vertexArray._dirty = false;
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}
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/** wrapper around glDisableClientState(GL_VERTEX_ARRAY).
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* note, only updates values that change.*/
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inline void disableVertexPointer()
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{
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if (_vertexArray._enabled || _vertexArray._dirty)
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{
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_vertexArray._enabled = false;
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_vertexArray._dirty = false;
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glDisableClientState(GL_VERTEX_ARRAY);
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}
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}
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inline void dirtyVertexPointer()
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{
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_vertexArray._pointer = 0;
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_vertexArray._dirty = true;
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}
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/** wrapper around glEnableClientState(GL_NORMAL_ARRAY);glNormalPointer(..);
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* note, only updates values that change.*/
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inline void setNormalPointer( GLenum type, GLsizei stride,
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const GLvoid *ptr )
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{
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if (!_normalArray._enabled || _normalArray._dirty)
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{
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_normalArray._enabled = true;
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glEnableClientState(GL_NORMAL_ARRAY);
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}
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//if (_normalArray._pointer!=ptr || _normalArray._dirty)
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{
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_normalArray._pointer=ptr;
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glNormalPointer( type, stride, ptr );
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}
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_normalArray._dirty = false;
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}
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/** wrapper around glDisableClientState(GL_NORMAL_ARRAY);
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* note, only updates values that change.*/
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inline void disableNormalPointer()
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{
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if (_normalArray._enabled || _normalArray._dirty)
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{
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_normalArray._enabled = false;
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_normalArray._dirty = false;
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glDisableClientState(GL_NORMAL_ARRAY);
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}
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}
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inline void dirtyNormalPointer()
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{
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_normalArray._pointer = 0;
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_normalArray._dirty = true;
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}
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/** wrapper around glEnableClientState(GL_COLOR_ARRAY);glColorPointer(..);
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* note, only updates values that change.*/
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inline void setColorPointer( GLint size, GLenum type,
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GLsizei stride, const GLvoid *ptr )
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{
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if (!_colorArray._enabled || _colorArray._dirty)
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{
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_colorArray._enabled = true;
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glEnableClientState(GL_COLOR_ARRAY);
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}
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//if (_colorArray._pointer!=ptr || _colorArray._dirty)
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{
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_colorArray._pointer=ptr;
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glColorPointer( size, type, stride, ptr );
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}
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_colorArray._dirty = false;
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}
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/** wrapper around glDisableClientState(GL_COLOR_ARRAY);
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* note, only updates values that change.*/
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inline void disableColorPointer()
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{
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if (_colorArray._enabled || _colorArray._dirty)
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{
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_colorArray._enabled = false;
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_colorArray._dirty = false;
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glDisableClientState(GL_COLOR_ARRAY);
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}
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}
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inline void dirtyColorPointer()
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{
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_colorArray._pointer = 0;
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_colorArray._dirty = true;
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}
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inline bool isSecondaryColorSupported() const { return _isSecondaryColorSupportResolved?_isSecondaryColorSupported:computeSecondaryColorSupported(); }
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/** wrapper around glEnableClientState(GL_SECONDARY_COLOR_ARRAY);glSecondayColorPointer(..);
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* note, only updates values that change.*/
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void setSecondaryColorPointer( GLint size, GLenum type, GLsizei stride, const GLvoid *ptr );
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/** wrapper around glDisableClientState(GL_SECONDARY_COLOR_ARRAY);
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* note, only updates values that change.*/
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inline void disableSecondaryColorPointer()
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{
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if (_secondaryColorArray._enabled || _secondaryColorArray._dirty)
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{
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_secondaryColorArray._enabled = false;
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_secondaryColorArray._dirty = false;
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if (isSecondaryColorSupported()) glDisableClientState(GL_SECONDARY_COLOR_ARRAY);
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}
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}
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inline void dirtySecondaryColorPointer()
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{
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_secondaryColorArray._pointer = 0;
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_secondaryColorArray._dirty = true;
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}
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/** wrapper around glEnableClientState(GL_INDEX_ARRAY);glIndexPointer(..);
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* note, only updates values that change.*/
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inline void setIndexPointer( GLenum type, GLsizei stride,
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const GLvoid *ptr )
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{
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if (!_indexArray._enabled || _indexArray._dirty)
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{
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_indexArray._enabled = true;
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glEnableClientState(GL_INDEX_ARRAY);
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}
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//if (_indexArray._pointer!=ptr || _indexArray._dirty)
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{
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_indexArray._pointer=ptr;
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glIndexPointer( type, stride, ptr );
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}
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_indexArray._dirty = false;
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}
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/** wrapper around glDisableClientState(GL_INDEX_ARRAY);
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* note, only updates values that change.*/
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inline void disableIndexPointer()
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{
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if (_indexArray._enabled || _indexArray._dirty)
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{
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_indexArray._enabled = false;
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_indexArray._dirty = false;
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glDisableClientState(GL_INDEX_ARRAY);
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}
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}
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inline void dirtyIndexPointer()
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{
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_indexArray._pointer = 0;
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_indexArray._dirty = true;
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}
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inline bool isFogCoordSupported() const { return _isFogCoordSupportResolved?_isFogCoordSupported:computeFogCoordSupported(); }
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/** wrapper around glEnableClientState(GL_FOG_COORDINATE_ARRAY);glFogCoordPointer(..);
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* note, only updates values that change.*/
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void setFogCoordPointer( GLenum type, GLsizei stride, const GLvoid *ptr );
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/** wrapper around glDisableClientState(GL_FOG_COORDINATE_ARRAY);
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* note, only updates values that change.*/
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inline void disableFogCoordPointer()
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{
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if (_fogArray._enabled || _fogArray._dirty)
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{
|
|
_fogArray._enabled = false;
|
|
_fogArray._dirty = false;
|
|
if (isFogCoordSupported()) glDisableClientState(GL_FOG_COORDINATE_ARRAY);
|
|
}
|
|
}
|
|
|
|
inline void dirtyFogCoordPointer()
|
|
{
|
|
_fogArray._pointer = 0;
|
|
_fogArray._dirty = true;
|
|
}
|
|
|
|
|
|
/** wrapper around glEnableClientState(GL_TEXTURE_COORD_ARRAY);glTexCoordPointer(..);
|
|
* note, only updates values that change.*/
|
|
inline void setTexCoordPointer( unsigned int unit,
|
|
GLint size, GLenum type,
|
|
GLsizei stride, const GLvoid *ptr )
|
|
{
|
|
if (setClientActiveTextureUnit(unit))
|
|
{
|
|
if ( unit >= _texCoordArrayList.size()) _texCoordArrayList.resize(unit+1);
|
|
EnabledArrayPair& eap = _texCoordArrayList[unit];
|
|
|
|
if (!eap._enabled || eap._dirty)
|
|
{
|
|
eap._enabled = true;
|
|
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
}
|
|
//if (eap._pointer!=ptr || eap._dirty)
|
|
{
|
|
glTexCoordPointer( size, type, stride, ptr );
|
|
eap._pointer = ptr;
|
|
}
|
|
eap._dirty = false;
|
|
}
|
|
}
|
|
|
|
/** wrapper around glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
* note, only updates values that change.*/
|
|
inline void disableTexCoordPointer( unsigned int unit )
|
|
{
|
|
if (setClientActiveTextureUnit(unit))
|
|
{
|
|
if ( unit >= _texCoordArrayList.size()) _texCoordArrayList.resize(unit+1);
|
|
EnabledArrayPair& eap = _texCoordArrayList[unit];
|
|
|
|
if (eap._enabled || eap._dirty)
|
|
{
|
|
eap._enabled = false;
|
|
eap._dirty = false;
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void dirtyTexCoordPointer( unsigned int unit )
|
|
{
|
|
if ( unit >= _texCoordArrayList.size()) return; // _texCoordArrayList.resize(unit+1);
|
|
EnabledArrayPair& eap = _texCoordArrayList[unit];
|
|
eap._pointer = 0;
|
|
eap._dirty = true;
|
|
}
|
|
|
|
|
|
inline void disableTexCoordPointersAboveAndIncluding( unsigned int unit )
|
|
{
|
|
while (unit<_texCoordArrayList.size())
|
|
{
|
|
EnabledArrayPair& eap = _texCoordArrayList[unit];
|
|
if (eap._enabled || eap._dirty)
|
|
{
|
|
if (setClientActiveTextureUnit(unit))
|
|
{
|
|
eap._enabled = false;
|
|
eap._dirty = false;
|
|
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
|
|
}
|
|
}
|
|
++unit;
|
|
}
|
|
}
|
|
|
|
inline void dirtyTexCoordPointersAboveAndIncluding( unsigned int unit )
|
|
{
|
|
while (unit<_texCoordArrayList.size())
|
|
{
|
|
EnabledArrayPair& eap = _texCoordArrayList[unit];
|
|
eap._pointer = 0;
|
|
eap._dirty = true;
|
|
++unit;
|
|
}
|
|
}
|
|
|
|
|
|
/** Set the current texture unit, return true if selected,
|
|
* false if selection failed such as when multitexturing is not supported.
|
|
* note, only updates values that change.*/
|
|
bool setActiveTextureUnit( unsigned int unit );
|
|
|
|
/** Get the current texture unit.*/
|
|
unsigned int getActiveTextureUnit() const { return _currentActiveTextureUnit; }
|
|
|
|
/** Set the current tex coord array texture unit, return true if selected,
|
|
* false if selection failed such as when multitexturing is not supported.
|
|
* note, only updates values that change.*/
|
|
bool setClientActiveTextureUnit( unsigned int unit );
|
|
|
|
/** Get the current tex coord array texture unit.*/
|
|
unsigned int getClientActiveTextureUnit() const { return _currentClientActiveTextureUnit; }
|
|
|
|
/** wrapper around glEnableVertexAttribArrayARB(index);glVertexAttribPointerARB(..);
|
|
* note, only updates values that change.*/
|
|
void setVertexAttribPointer( unsigned int index,
|
|
GLint size, GLenum type, GLboolean normalized,
|
|
GLsizei stride, const GLvoid *ptr );
|
|
|
|
/** wrapper around DisableVertexAttribArrayARB(index);
|
|
* note, only updates values that change.*/
|
|
void disableVertexAttribPointer( unsigned int index );
|
|
|
|
void disableVertexAttribPointersAboveAndIncluding( unsigned int index );
|
|
|
|
inline void dirtyVertexAttribPointersAboveAndIncluding( unsigned int index )
|
|
{
|
|
while (index<_vertexAttribArrayList.size())
|
|
{
|
|
EnabledArrayPair& eap = _vertexAttribArrayList[index];
|
|
eap._pointer = 0;
|
|
eap._dirty = true;
|
|
++index;
|
|
}
|
|
}
|
|
|
|
bool isVertexBufferObjectSupported() const { return _isVertexBufferObjectSupportResolved?_isVertexBufferObjectSupported:computeVertexBufferObjectSupported(); }
|
|
|
|
|
|
void setLastAppliedProgramObject(const Program::PerContextProgram* program) { _lastAppliedProgramObject = program; }
|
|
const Program::PerContextProgram* getLastAppliedProgramObject() const { return _lastAppliedProgramObject; }
|
|
|
|
inline GLint getUniformLocation( const std::string& name ) const { return _lastAppliedProgramObject ? getUniformLocation(name) : -1; }
|
|
inline GLint getAttribLocation( const std::string& name ) const { return _lastAppliedProgramObject ? getAttribLocation(name) : -1; }
|
|
|
|
/** 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::StateAttribute's and osg::Drawable's to
|
|
help manage OpenGL display list and texture binds appropriate
|
|
for each context, the contextID simply acts as an index in local
|
|
arrays that they maintain for the purpose.
|
|
Typical settings for contextID are 0,1,2,3... up to the maximum
|
|
number of graphics contexts you have set up.
|
|
By default contextID is 0.*/
|
|
inline void setContextID(unsigned int contextID) { _contextID=contextID; }
|
|
|
|
/** Get the current OpenGL context unique ID.*/
|
|
inline unsigned int getContextID() const { return _contextID; }
|
|
|
|
|
|
/** Set the frame stamp for the current frame.*/
|
|
inline void setFrameStamp(FrameStamp* fs) { _frameStamp = fs; }
|
|
|
|
/** Get the frame stamp for the current frame.*/
|
|
inline const FrameStamp* getFrameStamp() const { return _frameStamp.get(); }
|
|
|
|
|
|
/** Set the DisplaySettings. Note, nothing is applied, the visual settings are just
|
|
* used in the State object to pass the current visual settings to Drawables
|
|
* during rendering. */
|
|
inline void setDisplaySettings(DisplaySettings* vs) { _displaySettings = vs; }
|
|
|
|
/** Get the DisplaySettings */
|
|
inline const DisplaySettings* getDisplaySettings() const { return _displaySettings.get(); }
|
|
|
|
|
|
|
|
/** Set flag for early termination of the draw traversal.*/
|
|
void setAbortRenderingPtr(bool* abortPtr) { _abortRenderingPtr = abortPtr; }
|
|
|
|
/** Get flag for early termination of the draw traversal,
|
|
* if true steps should be taken to complete rendering early.*/
|
|
bool getAbortRendering() const { return _abortRenderingPtr!=0?(*_abortRenderingPtr):false; }
|
|
|
|
void setReportGLErrors(bool flag) { _reportGLErrors = flag; }
|
|
bool getReportGLErrors() const { return _reportGLErrors; }
|
|
|
|
bool checkGLErrors(const char* str) const;
|
|
bool checkGLErrors(StateAttribute::GLMode mode) const;
|
|
bool checkGLErrors(const StateAttribute* attribute) const;
|
|
|
|
protected:
|
|
|
|
virtual ~State();
|
|
|
|
unsigned int _contextID;
|
|
ref_ptr<FrameStamp> _frameStamp;
|
|
|
|
ref_ptr<const RefMatrix> _identity;
|
|
ref_ptr<const RefMatrix> _initialViewMatrix;
|
|
ref_ptr<const RefMatrix> _projection;
|
|
ref_ptr<const RefMatrix> _modelView;
|
|
|
|
Matrix _initialInverseViewMatrix;
|
|
|
|
ref_ptr<DisplaySettings> _displaySettings;
|
|
|
|
bool* _abortRenderingPtr;
|
|
bool _reportGLErrors;
|
|
|
|
struct ModeStack
|
|
{
|
|
typedef std::vector<StateAttribute::GLModeValue> ValueVec;
|
|
|
|
ModeStack()
|
|
{
|
|
changed = false;
|
|
last_applied_value = false;
|
|
global_default_value = false;
|
|
}
|
|
|
|
bool changed;
|
|
bool last_applied_value;
|
|
bool global_default_value;
|
|
ValueVec valueVec;
|
|
};
|
|
|
|
struct AttributeStack
|
|
{
|
|
typedef std::pair<const StateAttribute*,StateAttribute::OverrideValue> AttributeStack::AttributePair;
|
|
typedef std::vector<AttributeStack::AttributePair> AttributeVec;
|
|
|
|
AttributeStack()
|
|
{
|
|
changed = false;
|
|
last_applied_attribute = 0L;
|
|
global_default_attribute = 0L;
|
|
}
|
|
|
|
/** apply an attribute if required, passing in attribute and appropriate attribute stack */
|
|
bool changed;
|
|
const StateAttribute* last_applied_attribute;
|
|
ref_ptr<const StateAttribute> global_default_attribute;
|
|
AttributeVec attributeVec;
|
|
};
|
|
|
|
|
|
struct UniformStack
|
|
{
|
|
typedef std::pair<const Uniform*,StateAttribute::OverrideValue> UniformPair;
|
|
typedef std::vector<UniformPair> UniformVec;
|
|
|
|
UniformStack()
|
|
{
|
|
changed = false;
|
|
last_applied_uniform = 0L;
|
|
global_default_uniform = 0L;
|
|
}
|
|
|
|
/** apply an uniform if required */
|
|
bool changed;
|
|
const Uniform* last_applied_uniform;
|
|
ref_ptr<const Uniform> global_default_uniform;
|
|
UniformVec uniformVec;
|
|
};
|
|
|
|
|
|
struct ProgramStack
|
|
{
|
|
typedef std::vector<const Program*> ProgramVec;
|
|
|
|
ProgramStack()
|
|
{
|
|
changed = false;
|
|
last_applied_program = 0L;
|
|
global_default_program = 0L;
|
|
}
|
|
|
|
/** apply an program if required */
|
|
bool changed;
|
|
const Program* last_applied_program;
|
|
ref_ptr<const Program> global_default_program;
|
|
ProgramVec programVec;
|
|
};
|
|
|
|
/** Apply an OpenGL mode if required, passing in mode, enable flag and
|
|
* appropriate mode stack. This is a wrapper around \c glEnable() and
|
|
* \c glDisable(), that just actually calls these functions if the
|
|
* \c enabled flag is different than the current state.
|
|
* @return \c true if the state was actually changed. \c false
|
|
* otherwise. Notice that a \c false return does not indicate
|
|
* an error, it just means that the mode was already set to the
|
|
* same value as the \c enabled parameter.
|
|
*/
|
|
inline bool applyMode(StateAttribute::GLMode mode,bool enabled,ModeStack& ms)
|
|
{
|
|
if (ms.last_applied_value != enabled)
|
|
{
|
|
ms.last_applied_value = enabled;
|
|
|
|
if (enabled) glEnable(mode);
|
|
else glDisable(mode);
|
|
|
|
if (_reportGLErrors) checkGLErrors(mode);
|
|
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
|
|
/** apply an attribute if required, passing in attribute and appropriate attribute stack */
|
|
inline bool applyAttribute(const StateAttribute* attribute,AttributeStack& as)
|
|
{
|
|
if (as.last_applied_attribute != attribute)
|
|
{
|
|
if (!as.global_default_attribute.valid()) as.global_default_attribute = dynamic_cast<StateAttribute*>(attribute->cloneType());
|
|
|
|
as.last_applied_attribute = attribute;
|
|
attribute->apply(*this);
|
|
|
|
if (_reportGLErrors) checkGLErrors(attribute);
|
|
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
inline bool applyGlobalDefaultAttribute(AttributeStack& as)
|
|
{
|
|
if (as.last_applied_attribute != as.global_default_attribute.get())
|
|
{
|
|
as.last_applied_attribute = as.global_default_attribute.get();
|
|
if (as.global_default_attribute.valid())
|
|
{
|
|
as.global_default_attribute->apply(*this);
|
|
if (_reportGLErrors) checkGLErrors(as.global_default_attribute.get());
|
|
}
|
|
return true;
|
|
}
|
|
else
|
|
return false;
|
|
}
|
|
|
|
|
|
typedef std::map<StateAttribute::GLMode,ModeStack> ModeMap;
|
|
typedef std::vector<ModeMap> TextureModeMapList;
|
|
|
|
typedef std::map<StateAttribute::TypeMemberPair,AttributeStack> AttributeMap;
|
|
typedef std::vector<AttributeMap> TextureAttributeMapList;
|
|
|
|
typedef std::map<std::string,UniformStack> UniformMap;
|
|
|
|
typedef std::vector<const StateSet*> StateSetStack;
|
|
typedef std::vector<ref_ptr<const Matrix> > MatrixStack;
|
|
|
|
ModeMap _modeMap;
|
|
AttributeMap _attributeMap;
|
|
UniformMap _uniformMap;
|
|
|
|
TextureModeMapList _textureModeMapList;
|
|
TextureAttributeMapList _textureAttributeMapList;
|
|
|
|
ProgramStack _programStack;
|
|
const Program::PerContextProgram* _lastAppliedProgramObject;
|
|
|
|
StateSetStack _stateStateStack;
|
|
|
|
struct EnabledArrayPair
|
|
{
|
|
EnabledArrayPair():_dirty(true),_enabled(false),_normalized(0),_pointer(0) {}
|
|
EnabledArrayPair(const EnabledArrayPair& eap):_dirty(eap._dirty), _enabled(eap._enabled),_normalized(eap._normalized),_pointer(eap._pointer) {}
|
|
EnabledArrayPair& operator = (const EnabledArrayPair& eap) { _dirty=eap._dirty; _enabled=eap._enabled; _normalized=eap._normalized;_pointer=eap._pointer; return *this; }
|
|
|
|
bool _dirty;
|
|
bool _enabled;
|
|
GLboolean _normalized;
|
|
const GLvoid* _pointer;
|
|
};
|
|
|
|
typedef std::vector<EnabledArrayPair> EnabledTexCoordArrayList;
|
|
typedef std::vector<EnabledArrayPair> EnabledVertexAttribArrayList;
|
|
|
|
EnabledArrayPair _vertexArray;
|
|
EnabledArrayPair _normalArray;
|
|
EnabledArrayPair _colorArray;
|
|
EnabledArrayPair _secondaryColorArray;
|
|
EnabledArrayPair _indexArray;
|
|
EnabledArrayPair _fogArray;
|
|
EnabledTexCoordArrayList _texCoordArrayList;
|
|
EnabledVertexAttribArrayList _vertexAttribArrayList;
|
|
|
|
unsigned int _currentActiveTextureUnit;
|
|
unsigned int _currentClientActiveTextureUnit;
|
|
|
|
inline ModeMap& getOrCreateTextureModeMap(unsigned int unit)
|
|
{
|
|
if (unit>=_textureModeMapList.size()) _textureModeMapList.resize(unit+1);
|
|
return _textureModeMapList[unit];
|
|
}
|
|
|
|
|
|
inline AttributeMap& getOrCreateTextureAttributeMap(unsigned int unit)
|
|
{
|
|
if (unit>=_textureAttributeMapList.size()) _textureAttributeMapList.resize(unit+1);
|
|
return _textureAttributeMapList[unit];
|
|
}
|
|
|
|
inline void pushModeList(ModeMap& modeMap,const StateSet::ModeList& modeList);
|
|
inline void pushAttributeList(AttributeMap& attributeMap,const StateSet::AttributeList& attributeList);
|
|
|
|
inline void popModeList(ModeMap& modeMap,const StateSet::ModeList& modeList);
|
|
inline void popAttributeList(AttributeMap& attributeMap,const StateSet::AttributeList& attributeList);
|
|
|
|
inline void applyModeList(ModeMap& modeMap,const StateSet::ModeList& modeList);
|
|
inline void applyAttributeList(AttributeMap& attributeMap,const StateSet::AttributeList& attributeList);
|
|
|
|
inline void applyModeMap(ModeMap& modeMap);
|
|
inline void applyAttributeMap(AttributeMap& attributeMap);
|
|
|
|
void haveAppliedMode(ModeMap& modeMap,StateAttribute::GLMode mode,StateAttribute::GLModeValue value);
|
|
void haveAppliedMode(ModeMap& modeMap,StateAttribute::GLMode mode);
|
|
void haveAppliedAttribute(AttributeMap& attributeMap,const StateAttribute* attribute);
|
|
void haveAppliedAttribute(AttributeMap& attributeMap,StateAttribute::Type type, unsigned int member);
|
|
bool getLastAppliedMode(const ModeMap& modeMap,StateAttribute::GLMode mode) const;
|
|
const StateAttribute* getLastAppliedAttribute(const AttributeMap& attributeMap,StateAttribute::Type type, unsigned int member) const;
|
|
|
|
|
|
mutable bool _isSecondaryColorSupportResolved;
|
|
mutable bool _isSecondaryColorSupported;
|
|
bool computeSecondaryColorSupported() const;
|
|
|
|
mutable bool _isFogCoordSupportResolved;
|
|
mutable bool _isFogCoordSupported;
|
|
bool computeFogCoordSupported() const;
|
|
|
|
mutable bool _isVertexBufferObjectSupportResolved;
|
|
mutable bool _isVertexBufferObjectSupported;
|
|
bool computeVertexBufferObjectSupported() const;
|
|
|
|
};
|
|
|
|
inline void State::pushModeList(ModeMap& modeMap,const StateSet::ModeList& modeList)
|
|
{
|
|
for(StateSet::ModeList::const_iterator mitr=modeList.begin();
|
|
mitr!=modeList.end();
|
|
++mitr)
|
|
{
|
|
// get the mode stack for incoming GLmode {mitr->first}.
|
|
ModeStack& ms = modeMap[mitr->first];
|
|
if (ms.valueVec.empty())
|
|
{
|
|
// first pair so simply push incoming pair to back.
|
|
ms.valueVec.push_back(mitr->second);
|
|
}
|
|
else if ((ms.valueVec.back() & StateAttribute::OVERRIDE) && !(mitr->second & StateAttribute::PROTECTED)) // check the existing override flag
|
|
{
|
|
// push existing back since override keeps the previous value.
|
|
ms.valueVec.push_back(ms.valueVec.back());
|
|
}
|
|
else
|
|
{
|
|
// no override on so simply push incoming pair to back.
|
|
ms.valueVec.push_back(mitr->second);
|
|
}
|
|
ms.changed = true;
|
|
}
|
|
}
|
|
|
|
inline void State::pushAttributeList(AttributeMap& attributeMap,const StateSet::AttributeList& attributeList)
|
|
{
|
|
for(StateSet::AttributeList::const_iterator aitr=attributeList.begin();
|
|
aitr!=attributeList.end();
|
|
++aitr)
|
|
{
|
|
// get the attribute stack for incoming type {aitr->first}.
|
|
AttributeStack& as = attributeMap[aitr->first];
|
|
if (as.attributeVec.empty())
|
|
{
|
|
// first pair so simply push incoming pair to back.
|
|
as.attributeVec.push_back(
|
|
AttributeStack::AttributePair(aitr->second.first.get(),aitr->second.second));
|
|
}
|
|
else if ((as.attributeVec.back().second & StateAttribute::OVERRIDE) && !(aitr->second.second & StateAttribute::PROTECTED)) // check the existing override flag
|
|
{
|
|
// push existing back since override keeps the previous value.
|
|
as.attributeVec.push_back(as.attributeVec.back());
|
|
}
|
|
else
|
|
{
|
|
// no override on so simply push incoming pair to back.
|
|
as.attributeVec.push_back(
|
|
AttributeStack::AttributePair(aitr->second.first.get(),aitr->second.second));
|
|
}
|
|
as.changed = true;
|
|
}
|
|
}
|
|
|
|
inline void State::popModeList(ModeMap& modeMap,const StateSet::ModeList& modeList)
|
|
{
|
|
for(StateSet::ModeList::const_iterator mitr=modeList.begin();
|
|
mitr!=modeList.end();
|
|
++mitr)
|
|
{
|
|
// get the mode stack for incoming GLmode {mitr->first}.
|
|
ModeStack& ms = modeMap[mitr->first];
|
|
if (!ms.valueVec.empty())
|
|
{
|
|
ms.valueVec.pop_back();
|
|
}
|
|
ms.changed = true;
|
|
}
|
|
}
|
|
|
|
inline void State::popAttributeList(AttributeMap& attributeMap,const StateSet::AttributeList& attributeList)
|
|
{
|
|
for(StateSet::AttributeList::const_iterator aitr=attributeList.begin();
|
|
aitr!=attributeList.end();
|
|
++aitr)
|
|
{
|
|
// get the attribute stack for incoming type {aitr->first}.
|
|
AttributeStack& as = attributeMap[aitr->first];
|
|
if (!as.attributeVec.empty())
|
|
{
|
|
as.attributeVec.pop_back();
|
|
}
|
|
as.changed = true;
|
|
}
|
|
}
|
|
|
|
inline void State::applyModeList(ModeMap& modeMap,const StateSet::ModeList& modeList)
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{
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StateSet::ModeList::const_iterator ds_mitr = modeList.begin();
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ModeMap::iterator this_mitr=modeMap.begin();
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while (this_mitr!=modeMap.end() && ds_mitr!=modeList.end())
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{
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if (this_mitr->first<ds_mitr->first)
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{
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// note GLMode = this_mitr->first
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ModeStack& ms = this_mitr->second;
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if (ms.changed)
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{
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ms.changed = false;
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if (!ms.valueVec.empty())
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{
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bool new_value = ms.valueVec.back() & StateAttribute::ON;
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applyMode(this_mitr->first,new_value,ms);
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}
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else
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{
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// assume default of disabled.
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applyMode(this_mitr->first,ms.global_default_value,ms);
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}
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}
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++this_mitr;
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}
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else if (ds_mitr->first<this_mitr->first)
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{
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// ds_mitr->first is a new mode, therefore
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// need to insert a new mode entry for ds_mistr->first.
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ModeStack& ms = modeMap[ds_mitr->first];
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bool new_value = ds_mitr->second & StateAttribute::ON;
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applyMode(ds_mitr->first,new_value,ms);
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// will need to disable this mode on next apply so set it to changed.
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ms.changed = true;
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++ds_mitr;
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}
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else
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{
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// this_mitr & ds_mitr refer to the same mode, check the override
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// if any otherwise just apply the incoming mode.
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ModeStack& ms = this_mitr->second;
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if (!ms.valueVec.empty() && (ms.valueVec.back() & StateAttribute::OVERRIDE) && !(ds_mitr->second & StateAttribute::PROTECTED))
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{
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// override is on, just treat as a normal apply on modes.
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if (ms.changed)
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{
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ms.changed = false;
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bool new_value = ms.valueVec.back() & StateAttribute::ON;
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applyMode(this_mitr->first,new_value,ms);
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}
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}
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else
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{
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// no override on or no previous entry, therefore consider incoming mode.
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bool new_value = ds_mitr->second & StateAttribute::ON;
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if (applyMode(ds_mitr->first,new_value,ms))
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{
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ms.changed = true;
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}
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}
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++this_mitr;
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++ds_mitr;
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}
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}
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// iterator over the remaining state modes to apply any previous changes.
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for(;
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this_mitr!=modeMap.end();
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++this_mitr)
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{
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// note GLMode = this_mitr->first
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ModeStack& ms = this_mitr->second;
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if (ms.changed)
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{
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ms.changed = false;
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if (!ms.valueVec.empty())
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{
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bool new_value = ms.valueVec.back() & StateAttribute::ON;
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applyMode(this_mitr->first,new_value,ms);
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}
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else
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{
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// assume default of disabled.
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applyMode(this_mitr->first,ms.global_default_value,ms);
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}
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}
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}
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// iterator over the remaining incoming modes to apply any new mode.
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for(;
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ds_mitr!=modeList.end();
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++ds_mitr)
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{
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ModeStack& ms = modeMap[ds_mitr->first];
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bool new_value = ds_mitr->second & StateAttribute::ON;
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applyMode(ds_mitr->first,new_value,ms);
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// will need to disable this mode on next apply so set it to changed.
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ms.changed = true;
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}
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}
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inline void State::applyAttributeList(AttributeMap& attributeMap,const StateSet::AttributeList& attributeList)
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{
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StateSet::AttributeList::const_iterator ds_aitr=attributeList.begin();
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AttributeMap::iterator this_aitr=attributeMap.begin();
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while (this_aitr!=attributeMap.end() && ds_aitr!=attributeList.end())
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{
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if (this_aitr->first<ds_aitr->first)
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{
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// note attribute type = this_aitr->first
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AttributeStack& as = this_aitr->second;
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if (as.changed)
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{
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as.changed = false;
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if (!as.attributeVec.empty())
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{
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const StateAttribute* new_attr = as.attributeVec.back().first;
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applyAttribute(new_attr,as);
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}
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else
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{
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applyGlobalDefaultAttribute(as);
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}
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}
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++this_aitr;
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}
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else if (ds_aitr->first<this_aitr->first)
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{
|
|
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// ds_aitr->first is a new attribute, therefore
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// need to insert a new attribute entry for ds_aitr->first.
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AttributeStack& as = attributeMap[ds_aitr->first];
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const StateAttribute* new_attr = ds_aitr->second.first.get();
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applyAttribute(new_attr,as);
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as.changed = true;
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++ds_aitr;
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}
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else
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{
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// this_mitr & ds_mitr refer to the same attribute, check the override
|
|
// if any otherwise just apply the incoming attribute
|
|
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|
AttributeStack& as = this_aitr->second;
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|
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if (!as.attributeVec.empty() && (as.attributeVec.back().second & StateAttribute::OVERRIDE) && !(ds_aitr->second.second & StateAttribute::PROTECTED))
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{
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// override is on, just treat as a normal apply on attribute.
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if (as.changed)
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{
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as.changed = false;
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const StateAttribute* new_attr = as.attributeVec.back().first;
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applyAttribute(new_attr,as);
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}
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}
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else
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{
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// no override on or no previous entry, therefore consider incoming attribute.
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const StateAttribute* new_attr = ds_aitr->second.first.get();
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if (applyAttribute(new_attr,as))
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{
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as.changed = true;
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}
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}
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++this_aitr;
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++ds_aitr;
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}
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}
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// iterator over the remaining state attributes to apply any previous changes.
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|
for(;
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this_aitr!=attributeMap.end();
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++this_aitr)
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|
{
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|
// note attribute type = this_aitr->first
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AttributeStack& as = this_aitr->second;
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if (as.changed)
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|
{
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as.changed = false;
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if (!as.attributeVec.empty())
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{
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const StateAttribute* new_attr = as.attributeVec.back().first;
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applyAttribute(new_attr,as);
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}
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else
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{
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applyGlobalDefaultAttribute(as);
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}
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}
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|
}
|
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|
// iterator over the remaining incoming attribute to apply any new attribute.
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|
for(;
|
|
ds_aitr!=attributeList.end();
|
|
++ds_aitr)
|
|
{
|
|
// ds_aitr->first is a new attribute, therefore
|
|
// need to insert a new attribute entry for ds_aitr->first.
|
|
AttributeStack& as = attributeMap[ds_aitr->first];
|
|
|
|
const StateAttribute* new_attr = ds_aitr->second.first.get();
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|
applyAttribute(new_attr,as);
|
|
|
|
// will need to update this attribute on next apply so set it to changed.
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|
as.changed = true;
|
|
}
|
|
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|
}
|
|
|
|
inline void State::applyModeMap(ModeMap& modeMap)
|
|
{
|
|
for(ModeMap::iterator mitr=modeMap.begin();
|
|
mitr!=modeMap.end();
|
|
++mitr)
|
|
{
|
|
// note GLMode = mitr->first
|
|
ModeStack& ms = mitr->second;
|
|
if (ms.changed)
|
|
{
|
|
ms.changed = false;
|
|
if (!ms.valueVec.empty())
|
|
{
|
|
bool new_value = ms.valueVec.back() & StateAttribute::ON;
|
|
applyMode(mitr->first,new_value,ms);
|
|
}
|
|
else
|
|
{
|
|
// assume default of disabled.
|
|
applyMode(mitr->first,ms.global_default_value,ms);
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
inline void State::applyAttributeMap(AttributeMap& attributeMap)
|
|
{
|
|
for(AttributeMap::iterator aitr=attributeMap.begin();
|
|
aitr!=attributeMap.end();
|
|
++aitr)
|
|
{
|
|
AttributeStack& as = aitr->second;
|
|
if (as.changed)
|
|
{
|
|
as.changed = false;
|
|
if (!as.attributeVec.empty())
|
|
{
|
|
const StateAttribute* new_attr = as.attributeVec.back().first;
|
|
applyAttribute(new_attr,as);
|
|
}
|
|
else
|
|
{
|
|
applyGlobalDefaultAttribute(as);
|
|
}
|
|
|
|
}
|
|
}
|
|
}
|
|
|
|
}
|
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|
|
#endif
|