kicad/include/gal/opengl/cached_container_gpu.h

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright 2013-2017 CERN
* Copyright (C) 2020-2021 KiCad Developers, see AUTHORS.txt for contributors.
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*
* @author Maciej Suminski <maciej.suminski@cern.ch>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef CACHED_CONTAINER_GPU_H_
#define CACHED_CONTAINER_GPU_H_
#include <gal/opengl/cached_container.h>
namespace KIGFX
{
/**
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* Specialization of CACHED_CONTAINER that stores data in video memory via memory mapping.
*/
class CACHED_CONTAINER_GPU : public CACHED_CONTAINER
{
public:
CACHED_CONTAINER_GPU( unsigned int aSize = DEFAULT_SIZE );
~CACHED_CONTAINER_GPU();
unsigned int GetBufferHandle() const override
{
return m_glBufferHandle;
}
bool IsMapped() const override
{
return m_isMapped;
}
///< @copydoc VERTEX_CONTAINER::Map()
void Map() override;
///< @copydoc VERTEX_CONTAINER::Unmap()
void Unmap() override;
protected:
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/**
* Remove empty spaces between chunks and optionally resizes the container.
*
* After the operation there is continuous space for storing vertices at the end of
* the container.
*
* @param aNewSize is the new size of container, expressed in number of vertices.
* @return false in case of failure (e.g. memory shortage).
*/
bool defragmentResize( unsigned int aNewSize ) override;
bool defragmentResizeMemcpy( unsigned int aNewSize );
///< Flag saying if vertex buffer is currently mapped
bool m_isMapped;
///< Vertex buffer handle
unsigned int m_glBufferHandle;
///< Flag saying whether it is safe to use glCopyBufferSubData
bool m_useCopyBuffer;
};
} // namespace KIGFX
#endif /* CACHED_CONTAINER_GPU_H_ */