67 lines
2.0 KiB
C++
67 lines
2.0 KiB
C++
// Filename: bufferContext.cxx
|
|
// Created by: drose (16Mar06)
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
//
|
|
// PANDA 3D SOFTWARE
|
|
// Copyright (c) Carnegie Mellon University. All rights reserved.
|
|
//
|
|
// All use of this software is subject to the terms of the revised BSD
|
|
// license. You should have received a copy of this license along
|
|
// with this source code in a file named "LICENSE."
|
|
//
|
|
////////////////////////////////////////////////////////////////////
|
|
|
|
#include "bufferContext.h"
|
|
|
|
TypeHandle BufferContext::_type_handle;
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: BufferContext::Constructor
|
|
// Access: Public
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
BufferContext::
|
|
BufferContext(BufferResidencyTracker *residency) :
|
|
_residency(residency),
|
|
_residency_state(0),
|
|
_data_size_bytes(0),
|
|
_owning_chain(NULL)
|
|
{
|
|
set_owning_chain(&residency->_chains[0]);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: BufferContext::Destructor
|
|
// Access: Public, Virtual
|
|
// Description:
|
|
////////////////////////////////////////////////////////////////////
|
|
BufferContext::
|
|
~BufferContext() {
|
|
set_owning_chain(NULL);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////
|
|
// Function: BufferContext::set_owning_chain
|
|
// Access: Private
|
|
// Description: Moves this object to a different BufferContextChain.
|
|
////////////////////////////////////////////////////////////////////
|
|
void BufferContext::
|
|
set_owning_chain(BufferContextChain *chain) {
|
|
if (chain != _owning_chain) {
|
|
if (_owning_chain != (BufferContextChain *)NULL){
|
|
--(_owning_chain->_count);
|
|
_owning_chain->adjust_bytes(-(int)_data_size_bytes);
|
|
remove_from_list();
|
|
}
|
|
|
|
_owning_chain = chain;
|
|
|
|
if (_owning_chain != (BufferContextChain *)NULL) {
|
|
++(_owning_chain->_count);
|
|
_owning_chain->adjust_bytes((int)_data_size_bytes);
|
|
insert_before(_owning_chain);
|
|
}
|
|
}
|
|
}
|