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/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2014 Robert Osfield
* Copyright (C) 2012 David Callu
* std::vector specialization : Pawel Ksiezopolski
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_BUFFERTEMPLATE
#define OSG_BUFFERTEMPLATE 1
#include <osg/BufferObject>
#include <vector>
namespace osg
{
/** Template buffer class to be used with a struct as template parameter.
* This class is useful to send C++ structures on the GPU (e.g. for uniform blocks) but be careful to the alignments rules on the GPU side !
*/
template <typename T>
class BufferTemplate : public BufferData
{
public:
BufferTemplate():
BufferData(),
_data(T())
{}
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
BufferTemplate(const BufferTemplate<T>& bt,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
osg::BufferData(bt,copyop),
_data(bt._data)
{}
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const BufferTemplate<T>*>(obj)!=NULL; }
virtual const char* libraryName() const { return "osg"; }
virtual const char* className() const { return "BufferTemplate<T>"; }
virtual Object* cloneType() const { return new BufferTemplate<T>(); }
virtual Object* clone(const CopyOp& copyop) const { return new BufferTemplate<T>(*this,copyop); }
virtual const GLvoid* getDataPointer() const { return &_data; }
virtual unsigned int getTotalDataSize() const { return sizeof(T); }
const T& getData() const { return _data; }
T& getData() { return _data; }
void setData(const T& data) { _data = data; dirty(); }
protected:
virtual ~BufferTemplate() {};
private:
T _data;
};
/** BufferTemplate specialization for std::vector
*/
template <typename T>
class BufferTemplate< std::vector<T> > : public BufferData
{
public:
BufferTemplate():
BufferData(),
_data()
{}
/** Copy constructor using CopyOp to manage deep vs shallow copy.*/
BufferTemplate(const BufferTemplate< std::vector<T> >& bt,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
osg::BufferData(bt,copyop),
_data(bt._data)
{}
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const BufferTemplate< std::vector<T> >*>(obj)!=NULL; }
virtual const char* libraryName() const { return "osg"; }
virtual const char* className() const { return "BufferTemplate<std::vector<T> >"; }
virtual Object* cloneType() const { return new BufferTemplate< std::vector<T> >(); }
virtual Object* clone(const CopyOp& copyop) const { return new BufferTemplate< std::vector<T> >(*this,copyop); }
virtual const GLvoid* getDataPointer() const { return &_data[0]; }
virtual unsigned int getTotalDataSize() const { return _data.size() * sizeof(T); }
const std::vector<T>& getData() const { return _data; }
std::vector<T>& getData() { return _data; }
void setData(const std::vector<T>& data) { _data = data; dirty(); }
protected:
virtual ~BufferTemplate() {};
private:
std::vector<T> _data;
};
}
#endif
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