114 lines
2.9 KiB
C++
114 lines
2.9 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_BUFFERED_VALUE
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#define OSG_BUFFERED_VALUE 1
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#include <osg/DisplaySettings>
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#include <vector>
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namespace osg {
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/** Simple buffered value array which is used for values that need to multibuffered on
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* one per graphics context basis.*/
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template<class T>
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class buffered_value
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{
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public:
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inline buffered_value():
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_array(DisplaySettings::instance()->getMaxNumberOfGraphicsContexts(),0)
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{}
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buffered_value& operator = (const buffered_value& rhs)
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{
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_array = rhs._array;
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return *this;
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}
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inline void setAllElementsTo(const T& t) { std::fill(_array.begin(),_array.end(),t); }
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inline void clear() { _array.clear(); }
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inline bool empty() const { return _array.empty(); }
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inline unsigned int size() const { return _array.size(); }
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inline T& operator[] (unsigned int pos)
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{
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// automatically resize array.
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if (_array.size()<=pos)
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_array.resize(pos+1,0);
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return _array[pos];
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}
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/* // do we implement the const version???
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inline T operator[] (unsigned int pos) const
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{
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return 0;
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}
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*/
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protected:
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std::vector<T> _array;
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};
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template<class T>
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class buffered_object
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{
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public:
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inline buffered_object():
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_array(DisplaySettings::instance()->getMaxNumberOfGraphicsContexts())
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{}
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buffered_object& operator = (const buffered_object& rhs)
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{
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_array = rhs._array;
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return *this;
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}
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inline void setAllElementsTo(const T& t) { std::fill(_array.begin(),_array.end(),t); }
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inline void clear() { _array.clear(); }
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inline bool empty() const { return _array.empty(); }
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inline unsigned int size() const { return _array.size(); }
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inline T& operator[] (unsigned int pos)
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{
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// automatically resize array.
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if (_array.size()<=pos)
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_array.resize(pos+1);
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return _array[pos];
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}
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/* // do we implement the const version???
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inline T operator[] (unsigned int pos) const
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{
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return 0;
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}
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*/
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protected:
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std::vector<T> _array;
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};
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}
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#endif
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