71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
// Filename: bufferContext.cxx
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// Created by: drose (16Mar06)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://etc.cmu.edu/panda3d/docs/license/ .
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//
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// To contact the maintainers of this program write to
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// panda3d-general@lists.sourceforge.net .
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//
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////////////////////////////////////////////////////////////////////
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#include "bufferContext.h"
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TypeHandle BufferContext::_type_handle;
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////////////////////////////////////////////////////////////////////
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// Function: BufferContext::Constructor
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// Access: Public
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// Description:
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////////////////////////////////////////////////////////////////////
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BufferContext::
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BufferContext(BufferResidencyTracker *residency) :
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_residency(residency),
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_residency_state(0),
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_data_size_bytes(0),
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_owning_chain(NULL)
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{
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set_owning_chain(&residency->_chains[0]);
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}
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////////////////////////////////////////////////////////////////////
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// Function: BufferContext::Destructor
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// Access: Public, Virtual
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// Description:
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////////////////////////////////////////////////////////////////////
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BufferContext::
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~BufferContext() {
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set_owning_chain(NULL);
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}
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////////////////////////////////////////////////////////////////////
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// Function: BufferContext::set_owning_chain
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// Access: Private
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// Description: Moves this object to a different BufferContextChain.
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////////////////////////////////////////////////////////////////////
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void BufferContext::
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set_owning_chain(BufferContextChain *chain) {
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if (chain != _owning_chain) {
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if (_owning_chain != (BufferContextChain *)NULL){
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--(_owning_chain->_count);
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_owning_chain->adjust_bytes(-(int)_data_size_bytes);
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remove_from_list();
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}
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_owning_chain = chain;
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if (_owning_chain != (BufferContextChain *)NULL) {
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++(_owning_chain->_count);
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_owning_chain->adjust_bytes((int)_data_size_bytes);
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insert_before(_owning_chain);
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}
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}
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}
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