81 lines
2.4 KiB
C++
81 lines
2.4 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) 2001, 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://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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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 "savedContext.h"
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#include "texture.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
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// Texture::prepare_texture()), the GSG will create some
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// internal handle for the texture and store it here.
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// The texture stores all of these handles internally.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA TextureContext : public SavedContext {
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public:
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INLINE TextureContext(Texture *tex);
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virtual size_t estimate_texture_memory();
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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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INLINE void mark_dirty(int flags_to_set);
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INLINE void clear_dirty_flags(int flags_to_clear = ~0);
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INLINE int get_dirty_flags() const;
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private:
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int _dirty_flags;
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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, "TextureContext",
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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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};
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#include "textureContext.I"
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#endif
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