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0b2d4d4879
Recommendation is to avoid using the year nomenclature as this information is already encoded in the git repo. Avoids needing to repeatly update. Also updates AUTHORS.txt from current repo with contributor names
103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2013 CERN
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* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
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*
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* @author Maciej Suminski <maciej.suminski@cern.ch>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* @file noncached_container.cpp
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* @brief Class to store instances of VERTEX without caching. It allows a fast one-frame drawing
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* and then clearing the buffer and starting from scratch.
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*/
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#include <gal/opengl/noncached_container.h>
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#include <cstring>
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#include <cstdlib>
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using namespace KIGFX;
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NONCACHED_CONTAINER::NONCACHED_CONTAINER( unsigned int aSize ) :
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VERTEX_CONTAINER( aSize ),
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m_freePtr( 0 )
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{
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m_vertices = static_cast<VERTEX*>( malloc( aSize * sizeof( VERTEX ) ) );
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// Unfortunately we cannot remove the use of malloc here because realloc is used in
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// the Allocate method below. The new operator behavior is mimicked here so that a
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// malloc failure can be caught in the OpenGL initialization code further up the stack.
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if( !m_vertices )
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throw std::bad_alloc();
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memset( m_vertices, 0x00, aSize * sizeof( VERTEX ) );
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}
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NONCACHED_CONTAINER::~NONCACHED_CONTAINER()
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{
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free( m_vertices );
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}
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void NONCACHED_CONTAINER::SetItem( VERTEX_ITEM* aItem )
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{
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// Nothing has to be done, as the noncached container
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// does not care about VERTEX_ITEMs ownership
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}
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VERTEX* NONCACHED_CONTAINER::Allocate( unsigned int aSize )
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{
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if( m_freeSpace < aSize )
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{
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// Double the space
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VERTEX* newVertices =
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static_cast<VERTEX*>( realloc( m_vertices, m_currentSize * 2 * sizeof( VERTEX ) ) );
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if( newVertices != nullptr )
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{
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m_vertices = newVertices;
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m_freeSpace += m_currentSize;
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m_currentSize *= 2;
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}
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else
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{
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throw std::bad_alloc();
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}
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}
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VERTEX* freeVertex = &m_vertices[m_freePtr];
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// Move to the next free chunk
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m_freePtr += aSize;
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m_freeSpace -= aSize;
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return freeVertex;
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}
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void NONCACHED_CONTAINER::Clear()
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{
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m_freePtr = 0;
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m_freeSpace = m_currentSize;
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}
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