Panda3D
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bufferContext.cxx
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1/**
2 * PANDA 3D SOFTWARE
3 * Copyright (c) Carnegie Mellon University. All rights reserved.
4 *
5 * All use of this software is subject to the terms of the revised BSD
6 * license. You should have received a copy of this license along
7 * with this source code in a file named "LICENSE."
8 *
9 * @file bufferContext.cxx
10 * @author drose
11 * @date 2006-03-16
12 */
13
14#include "bufferContext.h"
15
16TypeHandle BufferContext::_type_handle;
17
18/**
19 *
20 */
21BufferContext::
22BufferContext(BufferResidencyTracker *residency, TypedWritableReferenceCount *object) :
23 _object(object),
24 _residency(residency),
25 _residency_state(0),
26 _data_size_bytes(0),
27 _owning_chain(nullptr)
28{
29 set_owning_chain(&residency->_chains[0]);
30}
31
32/**
33 *
34 */
35BufferContext::
36~BufferContext() {
37 set_owning_chain(nullptr);
38}
39
40/**
41 * Moves this object to a different BufferContextChain.
42 */
43void BufferContext::
44set_owning_chain(BufferContextChain *chain) {
45 if (chain != _owning_chain) {
46 if (_owning_chain != nullptr){
47 --(_owning_chain->_count);
48 _owning_chain->adjust_bytes(-(int)_data_size_bytes);
49 remove_from_list();
50 }
51
52 _owning_chain = chain;
53
54 if (_owning_chain != nullptr) {
55 ++(_owning_chain->_count);
56 _owning_chain->adjust_bytes((int)_data_size_bytes);
57 insert_before(_owning_chain);
58 }
59 }
60}
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
This class maintains a linked list of BufferContexts that might be allocated on the graphics card in ...
This class is used to keep track of the current state of all the BufferContexts for a particular grap...
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
A base class for things which need to inherit from both TypedWritable and from ReferenceCount.