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104 lines
3.2 KiB
C++
104 lines
3.2 KiB
C++
// Filename: textureContext.h
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// Created by: drose (07Oct99)
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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 TEXTURECONTEXT_H
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#define TEXTURECONTEXT_H
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#include "pandabase.h"
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#include "bufferContext.h"
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#include "texture.h"
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#include "preparedGraphicsObjects.h"
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#include "adaptiveLru.h"
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////////////////////////////////////////////////////////////////////
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// Class : TextureContext
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// Description : This is a special class object that holds all the
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// information returned by a particular GSG to indicate
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// the texture's internal context identifier.
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//
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// Textures typically have an immediate-mode and a
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// retained-mode operation. When using textures in
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// retained-mode (in response to Texture::prepare()),
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// the GSG will create some internal handle for the
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// texture and store it here. The texture stores all of
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// these handles internally.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_GOBJ TextureContext : public BufferContext, public AdaptiveLruPage {
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public:
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INLINE TextureContext(PreparedGraphicsObjects *pgo, Texture *tex, int view);
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PUBLISHED:
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INLINE Texture *get_texture() const;
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INLINE int get_view() const;
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INLINE bool was_modified() const;
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INLINE bool was_properties_modified() const;
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INLINE bool was_image_modified() const;
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INLINE bool was_simple_image_modified() const;
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INLINE UpdateSeq get_properties_modified() const;
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INLINE UpdateSeq get_image_modified() const;
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INLINE UpdateSeq get_simple_image_modified() const;
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public:
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INLINE void update_data_size_bytes(size_t new_data_size_bytes);
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INLINE void mark_loaded();
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INLINE void mark_simple_loaded();
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INLINE void mark_unloaded();
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INLINE void mark_needs_reload();
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virtual void output(ostream &out) const;
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virtual void write(ostream &out, int indent_level) const;
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private:
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// This cannot be a PT(Texture), because the texture and the GSG
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// both own their TextureContexts! That would create a circular
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// reference count.
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Texture *_texture;
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int _view;
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UpdateSeq _properties_modified;
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UpdateSeq _image_modified;
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UpdateSeq _simple_image_modified;
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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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BufferContext::init_type();
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register_type(_type_handle, "TextureContext",
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BufferContext::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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};
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inline ostream &operator << (ostream &out, const TextureContext &context) {
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context.output(out);
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return out;
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}
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#include "textureContext.I"
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#endif
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