135 lines
4.0 KiB
C++
135 lines
4.0 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 2013-2017 CERN
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* Copyright (C) 2021 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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#include <gal/opengl/cached_container_ram.h>
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#include <gal/opengl/vertex_manager.h>
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#include <gal/opengl/vertex_item.h>
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#include <gal/opengl/shader.h>
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#include <gal/opengl/utils.h>
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#include <confirm.h>
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#include <list>
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#include <cassert>
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#include <wx/log.h>
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#ifdef KICAD_GAL_PROFILE
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#include <profile.h>
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#endif /* KICAD_GAL_PROFILE */
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using namespace KIGFX;
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/**
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* Flag to enable debug output of the GAL OpenGL cached container.
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*
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* Use "KICAD_GAL_CACHED_CONTAINER" to enable GAL OpenGL cached container tracing.
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*
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* @ingroup trace_env_vars
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*/
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static const wxChar* const traceGalCachedContainer = wxT( "KICAD_GAL_CACHED_CONTAINER" );
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CACHED_CONTAINER_RAM::CACHED_CONTAINER_RAM( unsigned int aSize ) :
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CACHED_CONTAINER( aSize ),
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m_verticesBuffer( 0 )
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{
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glGenBuffers( 1, &m_verticesBuffer );
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checkGlError( "generating vertices buffer", __FILE__, __LINE__ );
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m_vertices = static_cast<VERTEX*>( malloc( aSize * VERTEX_SIZE ) );
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if( !m_vertices )
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throw std::bad_alloc();
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}
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CACHED_CONTAINER_RAM::~CACHED_CONTAINER_RAM()
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{
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if( glDeleteBuffers )
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glDeleteBuffers( 1, &m_verticesBuffer );
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free( m_vertices );
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}
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void CACHED_CONTAINER_RAM::Unmap()
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{
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if( !m_dirty )
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return;
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// Upload vertices coordinates and shader types to GPU memory
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glBindBuffer( GL_ARRAY_BUFFER, m_verticesBuffer );
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checkGlError( "binding vertices buffer", __FILE__, __LINE__ );
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glBufferData( GL_ARRAY_BUFFER, m_maxIndex * VERTEX_SIZE, m_vertices, GL_STREAM_DRAW );
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checkGlError( "transferring vertices", __FILE__, __LINE__ );
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glBindBuffer( GL_ARRAY_BUFFER, 0 );
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checkGlError( "unbinding vertices buffer", __FILE__, __LINE__ );
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}
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bool CACHED_CONTAINER_RAM::defragmentResize( unsigned int aNewSize )
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{
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wxLogTrace( traceGalCachedContainer,
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wxT( "Resizing & defragmenting container (memcpy) from %d to %d" ), m_currentSize,
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aNewSize );
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// No shrinking if we cannot fit all the data
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if( usedSpace() > aNewSize )
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return false;
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#ifdef KICAD_GAL_PROFILE
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PROF_TIMER totalTime;
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#endif /* KICAD_GAL_PROFILE */
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VERTEX* newBufferMem = static_cast<VERTEX*>( malloc( aNewSize * VERTEX_SIZE ) );
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if( !newBufferMem )
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throw std::bad_alloc();
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defragment( newBufferMem );
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// Switch to the new vertex buffer
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free( m_vertices );
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m_vertices = newBufferMem;
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#ifdef KICAD_GAL_PROFILE
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totalTime.Stop();
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wxLogTrace( traceGalCachedContainer, "Defragmented container storing %d vertices / %.1f ms",
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m_currentSize - m_freeSpace, totalTime.msecs() );
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#endif /* KICAD_GAL_PROFILE */
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m_freeSpace += ( aNewSize - m_currentSize );
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m_currentSize = aNewSize;
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// Now there is only one big chunk of free memory
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m_freeChunks.clear();
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m_freeChunks.insert( std::make_pair( m_freeSpace, m_currentSize - m_freeSpace ) );
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m_dirty = true;
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return true;
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}
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