Panda3D

bufferContextChain.h

00001 // Filename: bufferContextChain.h
00002 // Created by:  drose (16Mar06)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef BUFFERCONTEXTCHAIN_H
00016 #define BUFFERCONTEXTCHAIN_H
00017 
00018 #include "pandabase.h"
00019 #include "linkedListNode.h"
00020 
00021 class BufferContext;
00022 
00023 ////////////////////////////////////////////////////////////////////
00024 //       Class : BufferContextChain
00025 // Description : This class maintains a linked list of BufferContexts
00026 //               that might be allocated on the graphics card in some
00027 //               context.  There is a different BufferContextChain for
00028 //               resident textures, active textures, evicted textures,
00029 //               etc.
00030 //
00031 //               The primary purpose of this class is to facilitate
00032 //               PStats reporting of graphics memory usage.
00033 ////////////////////////////////////////////////////////////////////
00034 class EXPCL_PANDA_GOBJ BufferContextChain : private LinkedListNode {
00035 public:
00036   INLINE BufferContextChain();
00037   INLINE ~BufferContextChain();
00038 
00039   INLINE size_t get_total_size() const;
00040   INLINE int get_count() const;
00041 
00042   BufferContext *get_first();
00043 
00044   void take_from(BufferContextChain &other);
00045 
00046   void write(ostream &out, int indent_level) const;
00047 
00048 private:
00049   INLINE void adjust_bytes(int delta);
00050   size_t _total_size;
00051   int _count;
00052 
00053   friend class BufferContext;
00054 };
00055 
00056 #include "bufferContextChain.I"
00057 
00058 #endif
00059 
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