75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
// Filename: materialPool.h
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// Created by: drose (30Apr01)
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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 MATERIALPOOL_H
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#define MATERIALPOOL_H
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#include <pandabase.h>
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#include "material.h"
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#include <indirectCompareTo.h>
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#include <pointerTo.h>
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#include "pset.h"
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////////////////////////////////////////////////////////////////////
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// Class : MaterialPool
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// Description : The MaterialPool (there is only one in the universe)
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// serves to unify different pointers to the same
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// Material, so we do not (a) waste memory with many
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// different Material objects that are all equivalent,
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// and (b) waste time switching the graphics engine
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// between different Material states that are really the
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// same thing.
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//
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// The idea is to create a temporary Material
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// representing the lighting state you want to apply,
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// then call get_material(), passing in your temporary
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// Material. The return value will be a constant
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// Material object that should be modified (because it
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// is now shared among many different geometries), that
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// is the same as the temporary Material pointer you
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// supplied but may be a different pointer.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA MaterialPool {
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PUBLISHED:
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INLINE static const Material *get_material(const CPT(Material) &temp);
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INLINE static int garbage_collect();
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INLINE static void list_contents(ostream &out);
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private:
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INLINE MaterialPool();
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const Material *ns_get_material(const CPT(Material) &temp);
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int ns_garbage_collect();
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void ns_list_contents(ostream &out);
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static MaterialPool *get_ptr();
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static MaterialPool *_global_ptr;
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typedef pset< CPT(Material), IndirectCompareTo<Material> > Materials;
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Materials _materials;
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};
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#include "materialPool.I"
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#endif
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