108 lines
2.9 KiB
C
108 lines
2.9 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 bufferContext.h
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* @author drose
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* @date 2006-03-16
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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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class TypedWritableReferenceCount;
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/**
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* This is a base class for those kinds of SavedContexts that occupy an
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* easily-measured (and substantial) number of bytes in the video card's frame
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* buffer memory or AGP memory. At the present, this includes most of the
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* SavedContext types: VertexBufferContext and IndexBufferContext, as well as
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* TextureContext.
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*
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* This class provides methods for tracking the video memory utilization, as
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* well as residency of each 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, TypedWritableReferenceCount *object);
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virtual ~BufferContext();
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INLINE TypedWritableReferenceCount *get_object() const;
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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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MAKE_PROPERTY(object, get_object);
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MAKE_PROPERTY(data_size_bytes, get_data_size_bytes);
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MAKE_PROPERTY(modified, get_modified);
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MAKE_PROPERTY(active, get_active);
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MAKE_PROPERTY(resident, get_resident);
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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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protected:
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// This cannot be a PT(), because the object and the GSG both own their
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// BufferContexts! That would create a circular reference count.
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TypedWritableReferenceCount *_object;
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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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