757 lines
22 KiB
C++
757 lines
22 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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#include <stdio.h>
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#include <math.h>
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#include <float.h>
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#include <osg/Drawable>
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#include <osg/State>
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#include <osg/Notify>
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#include <osg/Node>
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#include <osg/GLExtensions>
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#include <algorithm>
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#include <map>
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#include <set>
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using namespace osg;
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// static cache of deleted display lists which can only
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// by completely deleted once the appropriate OpenGL context
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// is set. Used osg::Drawable::deleteDisplayList(..) and flushDeletedDisplayLists(..) below.
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typedef std::vector<GLuint> DisplayListVector;
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typedef std::map<GLuint,DisplayListVector> DeletedDisplayListCache;
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static DeletedDisplayListCache s_deletedDisplayListCache;
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static DeletedDisplayListCache s_deletedVertexBufferObjectCache;
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void Drawable::deleteDisplayList(unsigned int contextID,GLuint globj)
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{
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if (globj!=0)
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{
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// insert the globj into the cache for the appropriate context.
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s_deletedDisplayListCache[contextID].push_back(globj);
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}
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}
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/** flush all the cached display list which need to be deleted
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* in the OpenGL context related to contextID.*/
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void Drawable::flushDeletedDisplayLists(unsigned int contextID)
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{
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DeletedDisplayListCache::iterator citr = s_deletedDisplayListCache.find(contextID);
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if (citr!=s_deletedDisplayListCache.end())
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{
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DisplayListVector displayListSet;
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displayListSet.reserve(1000);
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// this swap will transfer the content of and empty citr->second
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// in one quick pointer change.
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displayListSet.swap(citr->second);
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for(DisplayListVector::iterator gitr=displayListSet.begin();
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gitr!=displayListSet.end();
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++gitr)
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{
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glDeleteLists(*gitr,1);
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}
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}
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}
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void Drawable::deleteVertexBufferObject(unsigned int contextID,GLuint globj)
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{
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if (globj!=0)
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{
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// insert the globj into the cache for the appropriate context.
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s_deletedVertexBufferObjectCache[contextID].push_back(globj);
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}
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}
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/** flush all the cached display list which need to be deleted
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* in the OpenGL context related to contextID.*/
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void Drawable::flushDeletedVertexBufferObjects(unsigned int contextID)
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{
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DeletedDisplayListCache::iterator citr = s_deletedVertexBufferObjectCache.find(contextID);
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if (citr!=s_deletedVertexBufferObjectCache.end())
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{
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const Extensions* extensions = getExtensions(contextID,true);
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DisplayListVector displayListSet;
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displayListSet.reserve(1000);
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// this swap will transfer the content of and empty citr->second
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// in one quick pointer change.
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displayListSet.swap(citr->second);
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for(DisplayListVector::iterator gitr=displayListSet.begin();
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gitr!=displayListSet.end();
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++gitr)
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{
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extensions->glDeleteBuffers(1,&(*gitr));
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}
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}
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}
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Drawable::Drawable()
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{
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_bbox_computed = false;
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// Note, if your are defining a subclass from drawable which is
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// dynamically updated then you should set both the following to
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// to false in your constructor. This will prevent any display
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// lists from being automatically created and safeguard the
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// dynamic updating of data.
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_supportsDisplayList = true;
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_useDisplayList = true;
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_supportsVertexBufferObjects = false;
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_useVertexBufferObjects = false;
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}
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Drawable::Drawable(const Drawable& drawable,const CopyOp& copyop):
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Object(drawable,copyop),
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_parents(), // leave empty as parentList is managed by Geode
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_stateset(copyop(drawable._stateset.get())),
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_bbox(drawable._bbox),
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_bbox_computed(drawable._bbox_computed),
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_shape(copyop(drawable._shape.get())),
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_supportsDisplayList(drawable._supportsDisplayList),
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_useDisplayList(drawable._useDisplayList),
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_supportsVertexBufferObjects(drawable._supportsVertexBufferObjects),
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_useVertexBufferObjects(drawable._useVertexBufferObjects),
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_drawCallback(drawable._drawCallback),
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_cullCallback(drawable._cullCallback)
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{
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}
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Drawable::~Drawable()
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{
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dirtyDisplayList();
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}
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void Drawable::addParent(osg::Node* node)
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{
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_parents.push_back(node);
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}
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void Drawable::removeParent(osg::Node* node)
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{
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ParentList::iterator pitr = std::find(_parents.begin(),_parents.end(),node);
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if (pitr!=_parents.end()) _parents.erase(pitr);
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}
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osg::StateSet* Drawable::getOrCreateStateSet()
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{
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if (!_stateset) _stateset = new StateSet;
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return _stateset.get();
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}
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void Drawable::dirtyBound()
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{
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if (_bbox_computed)
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{
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_bbox_computed = false;
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// dirty parent bounding sphere's to ensure that all are valid.
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for(ParentList::iterator itr=_parents.begin();
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itr!=_parents.end();
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++itr)
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{
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(*itr)->dirtyBound();
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}
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}
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}
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void Drawable::compile(State& state) const
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{
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if (!_useDisplayList) return;
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// get the contextID (user defined ID of 0 upwards) for the
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// current OpenGL context.
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unsigned int contextID = state.getContextID();
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// get the globj for the current contextID.
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GLuint& globj = _globjList[contextID];
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// call the globj if already set otherwise comple and execute.
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if( globj != 0 )
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{
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glDeleteLists( globj, 1 );
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}
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if (_stateset.valid())
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{
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_stateset->compile(state);
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}
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globj = glGenLists( 1 );
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glNewList( globj, GL_COMPILE );
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if (_drawCallback.valid())
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_drawCallback->drawImplementation(state,this);
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else
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drawImplementation(state);
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glEndList();
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}
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void Drawable::setSupportsDisplayList(bool flag)
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{
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// if value unchanged simply return.
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if (_supportsDisplayList==flag) return;
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// if previously set to true then need to check about display lists.
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if (_supportsDisplayList)
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{
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if (_useDisplayList)
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{
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// used to support display lists and display lists switched
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// on so now delete them and turn useDisplayList off.
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dirtyDisplayList();
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_useDisplayList = false;
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}
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}
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// set with new value.
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_supportsDisplayList=flag;
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}
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void Drawable::setUseDisplayList(bool flag)
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{
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// if value unchanged simply return.
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if (_useDisplayList==flag) return;
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// if was previously set to true, remove display list.
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if (_useDisplayList)
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{
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dirtyDisplayList();
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}
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if (_supportsDisplayList)
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{
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// set with new value.
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_useDisplayList = flag;
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}
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else // does not support display lists.
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{
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if (flag)
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{
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notify(WARN)<<"Warning: attempt to setUseDisplayList(true) on a drawable with does not support display lists."<<std::endl;
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}
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else
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{
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// set with new value.
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_useDisplayList = false;
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}
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}
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}
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void Drawable::setUseVertexBufferObjects(bool flag)
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{
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// if value unchanged simply return.
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if (_useVertexBufferObjects==flag) return;
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// if was previously set to true, remove display list.
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if (_useVertexBufferObjects)
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{
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dirtyDisplayList();
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}
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_useVertexBufferObjects = flag;
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}
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void Drawable::dirtyDisplayList()
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{
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unsigned int i;
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for(i=0;i<_globjList.size();++i)
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{
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if (_globjList[i] != 0)
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{
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Drawable::deleteDisplayList(i,_globjList[i]);
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_globjList[i] = 0;
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}
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}
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for(i=0;i<_vboList.size();++i)
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{
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if (_vboList[i] != 0)
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{
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Drawable::deleteVertexBufferObject(i,_vboList[i]);
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_vboList[i] = 0;
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}
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}
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}
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void Drawable::setUpdateCallback(UpdateCallback* ac)
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{
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if (_updateCallback==ac) return;
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int delta = 0;
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if (_updateCallback.valid()) --delta;
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if (ac) ++delta;
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_updateCallback = ac;
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if (delta!=0)
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{
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for(ParentList::iterator itr=_parents.begin();
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itr!=_parents.end();
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++itr)
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{
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(*itr)->setNumChildrenRequiringUpdateTraversal((*itr)->getNumChildrenRequiringUpdateTraversal()+delta);
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}
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}
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}
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struct ComputeBound : public Drawable::PrimitiveFunctor
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{
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ComputeBound():_vertices(0) {}
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virtual void setVertexArray(unsigned int,const Vec2*)
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{
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notify(WARN)<<"ComputeBound does not support Vec2* vertex arrays"<<std::endl;
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}
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virtual void setVertexArray(unsigned int,const Vec3* vertices) { _vertices = vertices; }
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virtual void setVertexArray(unsigned int,const Vec4*)
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{
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notify(WARN)<<"ComputeBound does not support Vec4* vertex arrays"<<std::endl;
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}
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virtual void drawArrays(GLenum,GLint first,GLsizei count)
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{
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if (_vertices)
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{
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const osg::Vec3* vert = _vertices+first;
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for(;count>0;--count,++vert)
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{
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_bb.expandBy(*vert);
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}
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}
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}
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virtual void drawElements(GLenum,GLsizei count,const GLubyte* indices)
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{
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if (_vertices)
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{
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for(;count>0;--count,++indices)
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{
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_bb.expandBy(_vertices[*indices]);
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}
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}
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}
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virtual void drawElements(GLenum,GLsizei count,const GLushort* indices)
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{
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if (_vertices)
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{
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for(;count>0;--count,++indices)
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{
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_bb.expandBy(_vertices[*indices]);
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}
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}
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}
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virtual void drawElements(GLenum,GLsizei count,const GLuint* indices)
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{
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if (_vertices)
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{
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for(;count>0;--count,++indices)
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{
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_bb.expandBy(_vertices[*indices]);
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}
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}
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}
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virtual void begin(GLenum) {}
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virtual void vertex(const Vec2& vert) { _bb.expandBy(osg::Vec3(vert[0],vert[1],0.0f)); }
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virtual void vertex(const Vec3& vert) { _bb.expandBy(vert); }
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virtual void vertex(const Vec4& vert) { if (vert[3]!=0.0f) _bb.expandBy(osg::Vec3(vert[0],vert[1],vert[2])/vert[3]); }
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virtual void vertex(float x,float y) { _bb.expandBy(x,y,1.0f); }
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virtual void vertex(float x,float y,float z) { _bb.expandBy(x,y,z); }
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virtual void vertex(float x,float y,float z,float w) { if (w!=0.0f) _bb.expandBy(x/w,y/w,z/w); }
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virtual void end() {}
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const Vec3* _vertices;
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BoundingBox _bb;
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};
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bool Drawable::computeBound() const
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{
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ComputeBound cb;
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Drawable* non_const_this = const_cast<Drawable*>(this);
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non_const_this->accept(cb);
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_bbox = cb._bb;
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_bbox_computed = true;
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return true;
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}
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void Drawable::setBound(const BoundingBox& bb) const
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{
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_bbox = bb;
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_bbox_computed = true;
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}
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//////////////////////////////////////////////////////////////////////////////
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//
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// Extension support
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//
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typedef buffered_value< ref_ptr<Drawable::Extensions> > BufferedExtensions;
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static BufferedExtensions s_extensions;
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Drawable::Extensions* Drawable::getExtensions(unsigned int contextID,bool createIfNotInitalized)
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{
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if (!s_extensions[contextID] && createIfNotInitalized) s_extensions[contextID] = new Drawable::Extensions;
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return s_extensions[contextID].get();
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}
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void Drawable::setExtensions(unsigned int contextID,Extensions* extensions)
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{
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s_extensions[contextID] = extensions;
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}
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Drawable::Extensions::Extensions()
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{
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setupGLExtenions();
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}
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Drawable::Extensions::Extensions(const Extensions& rhs):
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Referenced()
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{
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_isVertexProgramSupported = rhs._isVertexProgramSupported;
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_isSecondaryColorSupported = rhs._isSecondaryColorSupported;
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_isFogCoordSupported = rhs._isFogCoordSupported;
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_isMultiTexSupported = rhs._isMultiTexSupported;
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_glFogCoordfv = rhs._glFogCoordfv;
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_glSecondaryColor3ubv = rhs._glSecondaryColor3ubv;
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_glSecondaryColor3fv = rhs._glSecondaryColor3fv;
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_glMultiTexCoord1f = rhs._glMultiTexCoord1f;
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_glMultiTexCoord2fv = rhs._glMultiTexCoord2fv;
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_glMultiTexCoord3fv = rhs._glMultiTexCoord3fv;
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_glMultiTexCoord4fv = rhs._glMultiTexCoord4fv;
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_glVertexAttrib1s = rhs._glVertexAttrib1s;
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_glVertexAttrib1f = rhs._glVertexAttrib1f;
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_glVertexAttrib2fv = rhs._glVertexAttrib2fv;
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_glVertexAttrib3fv = rhs._glVertexAttrib3fv;
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_glVertexAttrib4fv = rhs._glVertexAttrib4fv;
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_glVertexAttrib4ubv = rhs._glVertexAttrib4ubv;
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_glVertexAttrib4Nubv = rhs._glVertexAttrib4Nubv;
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_glGenBuffers = rhs._glGenBuffers;
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_glBindBuffer = rhs._glBindBuffer;
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_glBufferData = rhs._glBufferData;
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_glBufferSubData = rhs._glBufferSubData;
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_glDeleteBuffers = rhs._glDeleteBuffers;
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}
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void Drawable::Extensions::lowestCommonDenominator(const Extensions& rhs)
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{
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if (!rhs._isVertexProgramSupported) _isVertexProgramSupported = false;
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if (!rhs._isSecondaryColorSupported) _isSecondaryColorSupported = false;
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if (!rhs._isFogCoordSupported) _isFogCoordSupported = false;
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if (!rhs._isMultiTexSupported) _isMultiTexSupported = false;
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if (!rhs._glFogCoordfv) _glFogCoordfv = 0;
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if (!rhs._glSecondaryColor3ubv) _glSecondaryColor3ubv = 0;
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if (!rhs._glSecondaryColor3fv) _glSecondaryColor3fv = 0;
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if (!rhs._glMultiTexCoord1f) _glMultiTexCoord1f = 0;
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if (!rhs._glMultiTexCoord2fv) _glMultiTexCoord2fv = 0;
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if (!rhs._glMultiTexCoord3fv) _glMultiTexCoord3fv = 0;
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if (!rhs._glMultiTexCoord4fv) _glMultiTexCoord4fv = 0;
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if (!rhs._glVertexAttrib1s) _glVertexAttrib1s = 0;
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if (!rhs._glVertexAttrib1f) _glVertexAttrib1f = 0;
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if (!rhs._glVertexAttrib2fv) _glVertexAttrib2fv = 0;
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if (!rhs._glVertexAttrib3fv) _glVertexAttrib3fv = 0;
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if (!rhs._glVertexAttrib4fv) _glVertexAttrib4fv = 0;
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if (!rhs._glVertexAttrib4ubv) _glVertexAttrib4ubv = 0;
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if (!rhs._glVertexAttrib4Nubv) _glVertexAttrib4Nubv = 0;
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if (!rhs._glGenBuffers) _glGenBuffers = 0;
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if (!rhs._glBindBuffer) _glBindBuffer = 0;
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if (!rhs._glBufferData) _glBufferData = 0;
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if (!rhs._glBufferSubData) _glBufferSubData = 0;
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if (!rhs._glDeleteBuffers) _glDeleteBuffers = 0;
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}
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void Drawable::Extensions::setupGLExtenions()
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{
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_isVertexProgramSupported = isGLExtensionSupported("GL_ARB_vertex_program");
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_isSecondaryColorSupported = isGLExtensionSupported("GL_EXT_secondary_color");
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_isFogCoordSupported = isGLExtensionSupported("GL_EXT_fog_coord");
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_isMultiTexSupported = isGLExtensionSupported("GL_ARB_multitexture");
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_glFogCoordfv = ((FogCoordProc)osg::getGLExtensionFuncPtr("glFogCoordfv","glFogCoordfvEXT"));
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_glSecondaryColor3ubv = ((SecondaryColor3ubvProc)osg::getGLExtensionFuncPtr("glSecondaryColor3ubv","glSecondaryColor3ubvEXT"));
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_glSecondaryColor3fv = ((SecondaryColor3fvProc)osg::getGLExtensionFuncPtr("glSecondaryColor3fv","glSecondaryColor3fvEXT"));
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_glMultiTexCoord1f = ((MultiTexCoord1fProc)osg::getGLExtensionFuncPtr("glMultiTexCoord1f","glMultiTexCoord1fARB"));
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_glMultiTexCoord2fv = ((MultiTexCoordfvProc)osg::getGLExtensionFuncPtr("glMultiTexCoord2fv","glMultiTexCoord2fvARB"));
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_glMultiTexCoord3fv = ((MultiTexCoordfvProc)osg::getGLExtensionFuncPtr("glMultiTexCoord3fv","glMultiTexCoord3fvARB"));
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_glMultiTexCoord4fv = ((MultiTexCoordfvProc)osg::getGLExtensionFuncPtr("glMultiTexCoord4fv","glMultiTexCoord4fvARB"));
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_glVertexAttrib1s = ((VertexAttrib1sProc)osg::getGLExtensionFuncPtr("glVertexAttrib1s","glVertexAttrib1sARB"));
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_glVertexAttrib1f = ((VertexAttrib1fProc)osg::getGLExtensionFuncPtr("glVertexAttrib1f","glVertexAttrib1fARB"));
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_glVertexAttrib2fv = ((VertexAttribfvProc)osg::getGLExtensionFuncPtr("glVertexAttrib2fv","glVertexAttrib2fvARB"));
|
|
_glVertexAttrib3fv = ((VertexAttribfvProc)osg::getGLExtensionFuncPtr("glVertexAttrib3fv","glVertexAttrib3fvARB"));
|
|
_glVertexAttrib4fv = ((VertexAttribfvProc)osg::getGLExtensionFuncPtr("glVertexAttrib4fv","glVertexAttrib4fvARB"));
|
|
_glVertexAttrib4ubv = ((VertexAttribubvProc)osg::getGLExtensionFuncPtr("glVertexAttrib4ubv","glVertexAttrib4ubvARB"));
|
|
_glVertexAttrib4Nubv = ((VertexAttribubvProc)osg::getGLExtensionFuncPtr("glVertexAttrib4Nubv","glVertexAttrib4NubvARB"));
|
|
|
|
_glGenBuffers = ((GenBuffersProc)osg::getGLExtensionFuncPtr("glGenBuffers","glGenBuffersARB"));
|
|
_glBindBuffer = ((BindBufferProc)osg::getGLExtensionFuncPtr("glBindBuffer","glBindBufferARB"));
|
|
_glBufferData = ((BufferDataProc)osg::getGLExtensionFuncPtr("glBufferData","glBufferDataARB"));
|
|
_glBufferSubData = ((BufferSubDataProc)osg::getGLExtensionFuncPtr("glBufferSubData","glBufferSubDataARB"));
|
|
_glDeleteBuffers = ((DeleteBuffersProc)osg::getGLExtensionFuncPtr("glDeleteBuffers","glDeleteBuffersARB"));
|
|
|
|
}
|
|
void Drawable::Extensions::glFogCoordfv(const GLfloat* coord) const
|
|
{
|
|
if (_glFogCoordfv)
|
|
{
|
|
_glFogCoordfv(coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glFogCoordfv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glSecondaryColor3ubv(const GLubyte* coord) const
|
|
{
|
|
if (_glSecondaryColor3ubv)
|
|
{
|
|
_glSecondaryColor3ubv(coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glSecondaryColor3ubv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glSecondaryColor3fv(const GLfloat* coord) const
|
|
{
|
|
if (_glSecondaryColor3fv)
|
|
{
|
|
_glSecondaryColor3fv(coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glSecondaryColor3fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glMultiTexCoord1f(GLenum target,GLfloat coord) const
|
|
{
|
|
if (_glMultiTexCoord1f)
|
|
{
|
|
_glMultiTexCoord1f(target,coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glMultiTexCoord1f not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glMultiTexCoord2fv(GLenum target,const GLfloat* coord) const
|
|
{
|
|
if (_glMultiTexCoord2fv)
|
|
{
|
|
_glMultiTexCoord2fv(target,coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glMultiTexCoord2fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glMultiTexCoord3fv(GLenum target,const GLfloat* coord) const
|
|
{
|
|
if (_glMultiTexCoord3fv)
|
|
{
|
|
_glMultiTexCoord3fv(target,coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: _glMultiTexCoord3fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glMultiTexCoord4fv(GLenum target,const GLfloat* coord) const
|
|
{
|
|
if (_glMultiTexCoord4fv)
|
|
{
|
|
_glMultiTexCoord4fv(target,coord);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glMultiTexCoord4fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib1s(unsigned int index, GLshort s) const
|
|
{
|
|
if (_glVertexAttrib1s)
|
|
{
|
|
_glVertexAttrib1s(index,s);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib1s not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib1f(unsigned int index, GLfloat f) const
|
|
{
|
|
if (_glVertexAttrib1f)
|
|
{
|
|
_glVertexAttrib1f(index,f);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib1f not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib2fv(unsigned int index, const GLfloat * v) const
|
|
{
|
|
if (_glVertexAttrib2fv)
|
|
{
|
|
_glVertexAttrib2fv(index,v);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib2fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib3fv(unsigned int index, const GLfloat * v) const
|
|
{
|
|
if (_glVertexAttrib3fv)
|
|
{
|
|
_glVertexAttrib3fv(index,v);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib3fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib4fv(unsigned int index, const GLfloat * v) const
|
|
{
|
|
if (_glVertexAttrib4fv)
|
|
{
|
|
_glVertexAttrib4fv(index,v);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib4fv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib4ubv(unsigned int index, const GLubyte * v) const
|
|
{
|
|
if (_glVertexAttrib4ubv)
|
|
{
|
|
_glVertexAttrib4ubv(index,v);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib4ubv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glVertexAttrib4Nubv(unsigned int index, const GLubyte * v) const
|
|
{
|
|
if (_glVertexAttrib4Nubv)
|
|
{
|
|
_glVertexAttrib4Nubv(index,v);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glVertexAttrib4Nubv not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glGenBuffers(GLsizei n, GLuint *buffers) const
|
|
{
|
|
if (_glGenBuffers)
|
|
{
|
|
_glGenBuffers(n, buffers);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glGenBuffers not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glBindBuffer(GLenum target, GLuint buffer) const
|
|
{
|
|
if (_glBindBuffer)
|
|
{
|
|
_glBindBuffer(target, buffer);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glBindBuffer not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glBufferData(GLenum target, GLsizeiptrARB size, const GLvoid *data, GLenum usage) const
|
|
{
|
|
if (_glBufferData)
|
|
{
|
|
_glBufferData(target, size, data, usage);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glBufferData not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glBufferSubData(GLenum target, GLintptrARB offset, GLsizeiptrARB size, const GLvoid *data) const
|
|
{
|
|
if (_glBufferSubData)
|
|
{
|
|
_glBufferSubData(target, offset, size, data);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glBufferData not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|
|
|
|
void Drawable::Extensions::glDeleteBuffers(GLsizei n, const GLuint *buffers) const
|
|
{
|
|
if (_glDeleteBuffers)
|
|
{
|
|
_glDeleteBuffers(n, buffers);
|
|
}
|
|
else
|
|
{
|
|
notify(WARN)<<"Error: glBufferData not supported by OpenGL driver"<<std::endl;
|
|
}
|
|
}
|