93 lines
3.1 KiB
C++
93 lines
3.1 KiB
C++
// Filename: bufferResidencyTracker.h
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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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#ifndef BUFFERRESIDENCYTRACKER_H
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#define BUFFERRESIDENCYTRACKER_H
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#include "pandabase.h"
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#include "bufferContextChain.h"
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#include "pStatCollector.h"
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class BufferContext;
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////////////////////////////////////////////////////////////////////
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// Class : BufferResidencyTracker
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// Description : This class is used to keep track of the current state
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// of all the BufferContexts for a particular graphics
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// context: whether each one is active (rendered this
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// frame) or inactive (not rendered this frame), and
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// whether it is resident or nonresident in video
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// memory.
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//
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// The primary purpose of this class is to facilitate
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// PStats reporting of video card memory usage.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA BufferResidencyTracker {
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public:
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BufferResidencyTracker(const string &pgo_name, const string &type_name);
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void begin_frame(Thread *current_thread);
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void end_frame(Thread *current_thread);
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INLINE BufferContextChain &get_inactive_nonresident();
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INLINE BufferContextChain &get_active_nonresident();
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INLINE BufferContextChain &get_inactive_resident();
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INLINE BufferContextChain &get_active_resident();
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private:
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void move_inactive(BufferContextChain &inactive, BufferContextChain &active);
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private:
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enum State {
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// Individual bits.
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S_active = 0x01,
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S_resident = 0x02,
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// Aggregate bits: unions of the above.
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S_inactive_nonresident = 0x00,
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S_active_nonresident = 0x01,
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S_inactive_resident = 0x02,
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S_active_resident = 0x03,
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// The total number of different states.
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S_num_states = 4,
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};
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// One chain for each of the possible states, ordered as above.
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BufferContextChain _chains[S_num_states];
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// A couple of PStatCollectors just to organize names.
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static PStatCollector _gmem_collector;
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PStatCollector _pgo_collector;
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// One PStatCollector for each state. These are ordered in reverse
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// order that we would like them to appear in the PStats graph.
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PStatCollector _active_resident_collector;
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PStatCollector _active_nonresident_collector;
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PStatCollector _inactive_resident_collector;
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PStatCollector _inactive_nonresident_collector;
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// The frame number currently considered "active".
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int _active_frame;
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friend class BufferContext;
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};
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#include "bufferResidencyTracker.I"
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#endif
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