89 lines
2.6 KiB
C
89 lines
2.6 KiB
C
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/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file bufferResidencyTracker.h
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* @author drose
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* @date 2006-03-16
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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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* This class is used to keep track of the current state of all the
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* BufferContexts for a particular graphics context: whether each one is
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* active (rendered this frame) or inactive (not rendered this frame), and
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* whether it is resident or nonresident in video memory.
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*
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* The primary purpose of this class is to facilitate PStats reporting of
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* video card memory usage.
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*/
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class EXPCL_PANDA_GOBJ BufferResidencyTracker {
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public:
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BufferResidencyTracker(const std::string &pgo_name, const std::string &type_name);
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~BufferResidencyTracker();
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void begin_frame(Thread *current_thread);
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void end_frame(Thread *current_thread);
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void set_levels();
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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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void write(std::ostream &out, int indent_level) const;
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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 order
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// 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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