98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
// Filename: bufferContext.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) 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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////////////////////////////////////////////////////////////////////
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#ifndef BUFFERCONTEXT_H
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#define BUFFERCONTEXT_H
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#include "pandabase.h"
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#include "savedContext.h"
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#include "updateSeq.h"
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#include "linkedListNode.h"
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#include "bufferContextChain.h"
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#include "bufferResidencyTracker.h"
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class PreparedGraphicsObjects;
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////////////////////////////////////////////////////////////////////
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// Class : BufferContext
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// Description : This is a base class for those kinds of SavedContexts
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// that occupy an easily-measured (and substantial)
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// number of bytes in the video card's frame buffer
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// memory or AGP memory. At the present, this includes
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// most of the SavedContext types: VertexBufferContext
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// and IndexBufferContext, as well as TextureContext.
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//
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// This class provides methods for tracking the video
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// memory utilization, as well as residency of each
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// object, via PStats.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_GOBJ BufferContext : public SavedContext, private LinkedListNode {
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public:
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BufferContext(BufferResidencyTracker *residency);
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virtual ~BufferContext();
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PUBLISHED:
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INLINE size_t get_data_size_bytes() const;
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INLINE UpdateSeq get_modified() const;
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INLINE bool get_active() const;
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INLINE bool get_resident() const;
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public:
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INLINE void set_active(bool flag);
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INLINE void set_resident(bool flag);
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INLINE BufferContext *get_next() const;
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INLINE void update_data_size_bytes(size_t new_data_size_bytes);
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INLINE void update_modified(UpdateSeq new_modified);
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private:
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void set_owning_chain(BufferContextChain *chain);
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private:
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BufferResidencyTracker *_residency;
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int _residency_state;
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size_t _data_size_bytes;
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UpdateSeq _modified;
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BufferContextChain *_owning_chain;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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SavedContext::init_type();
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register_type(_type_handle, "BufferContext",
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SavedContext::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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friend class PreparedGraphicsObjects;
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friend class BufferResidencyTracker;
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friend class BufferContextChain;
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};
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#include "bufferContext.I"
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#endif
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