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source: GTP/trunk/App/Demos/Geom/include/OgreMaterial.h @ 1030

Revision 1030, 30.3 KB checked in by gumbau, 18 years ago (diff)
Ogre Stuff initial import

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1	/*
2	-----------------------------------------------------------------------------
3	This source file is part of OGRE
4	(Object-oriented Graphics Rendering Engine)
5	For the latest info, see http://www.ogre3d.org/
6
7	Copyright (c) 2000-2005 The OGRE Team
8	Also see acknowledgements in Readme.html
9
10	This program is free software; you can redistribute it and/or modify it under
11	the terms of the GNU Lesser General Public License as published by the Free Software
12	Foundation; either version 2 of the License, or (at your option) any later
13	version.
14
15	This program is distributed in the hope that it will be useful, but WITHOUT
16	ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
17	FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
18
19	You should have received a copy of the GNU Lesser General Public License along with
20	this program; if not, write to the Free Software Foundation, Inc., 59 Temple
21	Place - Suite 330, Boston, MA 02111-1307, USA, or go to
22	http://www.gnu.org/copyleft/lesser.txt.
23	-----------------------------------------------------------------------------
24	*/
25	#ifndef _Material_H__
26	#define _Material_H__
27
28	#include "OgrePrerequisites.h"
29
30	#include "OgreResource.h"
31	#include "OgreIteratorWrappers.h"
32	#include "OgreCommon.h"
33	#include "OgreColourValue.h"
34	#include "OgreBlendMode.h"
35
36
37	namespace Ogre {
38
39	// Forward declaration
40	class MaterialPtr;
41
42	/** Class encapsulates rendering properties of an object.
43	@remarks
44	Ogre's material class encapsulates ALL aspects of the visual appearance,
45	of an object. It also includes other flags which
46	might not be traditionally thought of as material properties such as
47	culling modes and depth buffer settings, but these affect the
48	appearance of the rendered object and are convenient to attach to the
49	material since it keeps all the settings in one place. This is
50	different to Direct3D which treats a material as just the colour
51	components (diffuse, specular) and not texture maps etc. An Ogre
52	Material can be thought of as equivalent to a 'Shader'.
53	@par
54	A Material can be rendered in multiple different ways depending on the
55	hardware available. You may configure a Material to use high-complexity
56	fragment shaders, but these won't work on every card; therefore a Technique
57	is an approach to creating the visual effect you are looking for. You are advised
58	to create fallback techniques with lower hardware requirements if you decide to
59	use advanced features. In addition, you also might want lower-detail techniques
60	for distant geometry.
61	@par
62	Each technique can be made up of multiple passes. A fixed-function pass
63	may combine multiple texture layers using multitexrtuing, but Ogre can
64	break that into multiple passes automatically if the active card cannot
65	handle that many simultaneous textures. Programmable passes, however, cannot
66	be split down automatically, so if the active graphics card cannot handle the
67	technique which contains these passes, OGRE will try to find another technique
68	which the card can do. If, at the end of the day, the card cannot handle any of the
69	techniques which are listed for the material, the engine will render the
70	geometry plain white, which should alert you to the problem.
71	@par
72	Ogre comes configured with a number of default settings for a newly
73	created material. These can be changed if you wish by retrieving the
74	default material settings through
75	SceneManager::getDefaultMaterialSettings. Any changes you make to the
76	Material returned from this method will apply to any materials created
77	from this point onward.
78	*/
79	class _OgreExport Material : public Resource
80	{
81	friend class SceneManager;
82	friend class MaterialManager;
83
84	public:
85	/// distance list used to specify LOD
86	typedef std::vector<Real> LodDistanceList;
87	typedef ConstVectorIterator<LodDistanceList> LodDistanceIterator;
88	protected:
89
90
91	/** Internal method which sets the material up from the default settings.
92	*/
93	void applyDefaults(void);
94
95	typedef std::vector<Technique*> Techniques;
96	Techniques mTechniques;
97	Techniques mSupportedTechniques;
98	typedef std::map<unsigned short, Technique*> BestTechniqueList;
99	BestTechniqueList mBestTechniqueList;
100
101	LodDistanceList mLodDistances;
102	bool mReceiveShadows;
103	bool mTransparencyCastsShadows;
104	/// Does this material require compilation?
105	bool mCompilationRequired;
106
107	/** Fixup the best technique list guarantees no gaps inside.
108	@remarks
109	Iterate over the best technique list, looking for gaps and filling them in
110	guarantees we've got a sequential list with entries in all indexes
111	*/
112	void fixupBestTechniqueList(void);
113
114	/** Overridden from Resource.
115	*/
116	void loadImpl(void);
117
118	/** Unloads the material, frees resources etc.
119	@see
120	Resource
121	*/
122	void unloadImpl(void);
123	/// @copydoc Resource::calculateSize
124	size_t calculateSize(void) const { return 0; } // TODO
125	public:
126
127	/** Constructor - use resource manager's create method rather than this.
128	*/
129	Material(ResourceManager* creator, const String& name, ResourceHandle handle,
130	const String& group, bool isManual = false, ManualResourceLoader* loader = 0);
131
132	~Material();
133	/** Assignment operator to allow easy copying between materials.
134	*/
135	Material& operator=( const Material& rhs );
136
137	/** Determines if the material has any transparency with the rest of the scene (derived from
138	whether any Techniques say they involve transparency).
139	*/
140	bool isTransparent(void) const;
141
142	/** Sets whether objects using this material will receive shadows.
143	@remarks
144	This method allows a material to opt out of receiving shadows, if
145	it would otherwise do so. Shadows will not be cast on any objects
146	unless the scene is set up to support shadows
147	(@see SceneManager::setShadowTechnique), and not all techniques cast
148	shadows on all objects. In any case, if you have a need to prevent
149	shadows being received by material, this is the method you call to
150	do it.
151	@note
152	Transparent materials never receive shadows despite this setting.
153	The default is to receive shadows.
154	*/
155	void setReceiveShadows(bool enabled) { mReceiveShadows = enabled; }
156	/** Returns whether or not objects using this material will receive shadows. */
157	bool getReceiveShadows(void) const { return mReceiveShadows; }
158
159	/** Sets whether objects using this material be classified as opaque to the shadow caster system.
160	@remarks
161	This method allows a material to cast a shadow, even if it is transparent.
162	By default, transparent materials neither cast nor receive shadows. Shadows
163	will not be cast on any objects unless the scene is set up to support shadows
164	(@see SceneManager::setShadowTechnique), and not all techniques cast
165	shadows on all objects.
166	*/
167	void setTransparencyCastsShadows(bool enabled) { mTransparencyCastsShadows = enabled; }
168	/** Returns whether or not objects using this material be classified as opaque to the shadow caster system. */
169	bool getTransparencyCastsShadows(void) const { return mTransparencyCastsShadows; }
170
171	/** Creates a new Technique for this Material.
172	@remarks
173	A Technique is a single way of rendering geometry in order to achieve the effect
174	you are intending in a material. There are many reason why you would want more than
175	one - the main one being to handle variable graphics card abilities; you might have
176	one technique which is impressive but only runs on 4th-generation graphics cards,
177	for example. In this case you will want to create at least one fallback Technique.
178	OGRE will work out which Techniques a card can support and pick the best one.
179	@par
180	If multiple Techniques are available, the order in which they are created is
181	important - the engine will consider lower-indexed Techniques to be preferable
182	to higher-indexed Techniques, ie when asked for the 'best' technique it will
183	return the first one in the technique list which is supported by the hardware.
184	*/
185	Technique* createTechnique(void);
186	/** Gets the indexed technique. */
187	Technique* getTechnique(unsigned short index);
188	/** Retrieves the number of techniques. */
189	unsigned short getNumTechniques(void) const;
190	/** Removes the technique at the given index. */
191	void removeTechnique(unsigned short index);
192	/** Removes all the techniques in this Material. */
193	void removeAllTechniques(void);
194	typedef VectorIterator<Techniques> TechniqueIterator;
195	/** Get an iterator over the Techniques in this Material. */
196	TechniqueIterator getTechniqueIterator(void);
197	/** Gets an iterator over all the Techniques which are supported by the current card.
198	@remarks
199	The supported technique list is only available after this material has been compiled,
200	which typically happens on loading the material. Therefore, if this method returns
201	an empty list, try calling Material::load.
202	*/
203	TechniqueIterator getSupportedTechniqueIterator(void);
204
205	/** Gets the indexed supported technique. */
206	Technique* getSupportedTechnique(unsigned short index);
207	/** Retrieves the number of supported techniques. */
208	unsigned short getNumSupportedTechniques(void) const;
209
210	/** Gets the number of levels-of-detail this material has, based on
211	Technique::setLodIndex.
212	@remarks
213	Note that this will not be up to date until the material has been compiled.
214	*/
215	unsigned short getNumLodLevels(void) const {
216	return static_cast<unsigned short>(mBestTechniqueList.size()); }
217
218	/** Gets the best supported technique.
219	@remarks
220	This method returns the lowest-index supported Technique in this material
221	(since lower-indexed Techniques are considered to be better than higher-indexed
222	ones).
223	@par
224	The best supported technique is only available after this material has been compiled,
225	which typically happens on loading the material. Therefore, if this method returns
226	NULL, try calling Material::load.
227	@param lodIndex The material lod index to use
228	*/
229	Technique* getBestTechnique(unsigned short lodIndex = 0);
230
231
232	/** Creates a new copy of this material with the same settings but a new name.
233	@param newName The name for the cloned material
234	@param changeGroup If true, the resource group of the clone is changed
235	@param newGroup Only required if changeGroup is true; the new group to assign
236	*/
237	MaterialPtr clone(const String& newName, bool changeGroup = false,
238	const String& newGroup = StringUtil::BLANK) const;
239
240	/** Copies the details of this material into another, preserving the target's handle and name
241	(unlike operator=) but copying everything else.
242	@param mat Weak reference to material which will receive this material's settings.
243	*/
244	void copyDetailsTo(MaterialPtr& mat) const;
245
246	/** 'Compiles' this Material.
247	@remarks
248	Compiling a material involves determining which Techniques are supported on the
249	card on which OGRE is currently running, and for fixed-function Passes within those
250	Techniques, splitting the passes down where they contain more TextureUnitState
251	instances than the current card has texture units.
252	@par
253	This process is automatically done when the Material is loaded, but may be
254	repeated if you make some procedural changes.
255	@param
256	autoManageTextureUnits If true, when a fixed function pass has too many TextureUnitState
257	entries than the card has texture units, the Pass in question will be split into
258	more than one Pass in order to emulate the Pass. If you set this to false and
259	this situation arises, an Exception will be thrown.
260	*/
261	void compile(bool autoManageTextureUnits = true);
262
263	// -------------------------------------------------------------------------------
264	// The following methods are to make migration from previous versions simpler
265	// and to make code easier to write when dealing with simple materials
266	// They set the properties which have been moved to Pass for all Techniques and all Passes
267
268	/** Sets the ambient colour reflectance properties for every Pass in every Technique.
269	@note
270	This property has been moved to the Pass class, which is accessible via the
271	Technique. For simplicity, this method allows you to set these properties for
272	every current Technique, and for every current Pass within those Techniques. If
273	you need more precision, retrieve the Technique and Pass instances and set the
274	property there.
275	@see Pass::setAmbient
276	*/
277	void setAmbient(Real red, Real green, Real blue);
278
279	/** Sets the ambient colour reflectance properties for every Pass in every Technique.
280	@note
281	This property has been moved to the Pass class, which is accessible via the
282	Technique. For simplicity, this method allows you to set these properties for
283	every current Technique, and for every current Pass within those Techniques. If
284	you need more precision, retrieve the Technique and Pass instances and set the
285	property there.
286	@see Pass::setAmbient
287	*/
288	void setAmbient(const ColourValue& ambient);
289
290	/** Sets the diffuse colour reflectance properties of every Pass in every Technique.
291	@note
292	This property has been moved to the Pass class, which is accessible via the
293	Technique. For simplicity, this method allows you to set these properties for
294	every current Technique, and for every current Pass within those Techniques. If
295	you need more precision, retrieve the Technique and Pass instances and set the
296	property there.
297	@see Pass::setDiffuse
298	*/
299	void setDiffuse(Real red, Real green, Real blue, Real alpha);
300
301	/** Sets the diffuse colour reflectance properties of every Pass in every Technique.
302	@note
303	This property has been moved to the Pass class, which is accessible via the
304	Technique. For simplicity, this method allows you to set these properties for
305	every current Technique, and for every current Pass within those Techniques. If
306	you need more precision, retrieve the Technique and Pass instances and set the
307	property there.
308	@see Pass::setDiffuse
309	*/
310	void setDiffuse(const ColourValue& diffuse);
311
312	/** Sets the specular colour reflectance properties of every Pass in every Technique.
313	@note
314	This property has been moved to the Pass class, which is accessible via the
315	Technique. For simplicity, this method allows you to set these properties for
316	every current Technique, and for every current Pass within those Techniques. If
317	you need more precision, retrieve the Technique and Pass instances and set the
318	property there.
319	@see Pass::setSpecular
320	*/
321	void setSpecular(Real red, Real green, Real blue, Real alpha);
322
323	/** Sets the specular colour reflectance properties of every Pass in every Technique.
324	@note
325	This property has been moved to the Pass class, which is accessible via the
326	Technique. For simplicity, this method allows you to set these properties for
327	every current Technique, and for every current Pass within those Techniques. If
328	you need more precision, retrieve the Technique and Pass instances and set the
329	property there.
330	@see Pass::setSpecular
331	*/
332	void setSpecular(const ColourValue& specular);
333
334	/** Sets the shininess properties of every Pass in every Technique.
335	@note
336	This property has been moved to the Pass class, which is accessible via the
337	Technique. For simplicity, this method allows you to set these properties for
338	every current Technique, and for every current Pass within those Techniques. If
339	you need more precision, retrieve the Technique and Pass instances and set the
340	property there.
341	@see Pass::setShininess
342	*/
343	void setShininess(Real val);
344
345	/** Sets the amount of self-illumination of every Pass in every Technique.
346	@note
347	This property has been moved to the Pass class, which is accessible via the
348	Technique. For simplicity, this method allows you to set these properties for
349	every current Technique, and for every current Pass within those Techniques. If
350	you need more precision, retrieve the Technique and Pass instances and set the
351	property there.
352	@see Pass::setSelfIllumination
353	*/
354	void setSelfIllumination(Real red, Real green, Real blue);
355
356	/** Sets the amount of self-illumination of every Pass in every Technique.
357	@note
358	This property has been moved to the Pass class, which is accessible via the
359	Technique. For simplicity, this method allows you to set these properties for
360	every current Technique, and for every current Pass within those Techniques. If
361	you need more precision, retrieve the Technique and Pass instances and set the
362	property there.
363	@see Pass::setSelfIllumination
364	*/
365	void setSelfIllumination(const ColourValue& selfIllum);
366
367	/** Sets whether or not each Pass renders with depth-buffer checking on or not.
368	@note
369	This property has been moved to the Pass class, which is accessible via the
370	Technique. For simplicity, this method allows you to set these properties for
371	every current Technique, and for every current Pass within those Techniques. If
372	you need more precision, retrieve the Technique and Pass instances and set the
373	property there.
374	@see Pass::setDepthCheckEnabled
375	*/
376	void setDepthCheckEnabled(bool enabled);
377
378	/** Sets whether or not each Pass renders with depth-buffer writing on or not.
379	@note
380	This property has been moved to the Pass class, which is accessible via the
381	Technique. For simplicity, this method allows you to set these properties for
382	every current Technique, and for every current Pass within those Techniques. If
383	you need more precision, retrieve the Technique and Pass instances and set the
384	property there.
385	@see Pass::setDepthWriteEnabled
386	*/
387	void setDepthWriteEnabled(bool enabled);
388
389	/** Sets the function used to compare depth values when depth checking is on.
390	@note
391	This property has been moved to the Pass class, which is accessible via the
392	Technique. For simplicity, this method allows you to set these properties for
393	every current Technique, and for every current Pass within those Techniques. If
394	you need more precision, retrieve the Technique and Pass instances and set the
395	property there.
396	@see Pass::setDepthFunction
397	*/
398	void setDepthFunction( CompareFunction func );
399
400	/** Sets whether or not colour buffer writing is enabled for each Pass.
401	@note
402	This property has been moved to the Pass class, which is accessible via the
403	Technique. For simplicity, this method allows you to set these properties for
404	every current Technique, and for every current Pass within those Techniques. If
405	you need more precision, retrieve the Technique and Pass instances and set the
406	property there.
407	@see Pass::setColourWriteEnabled
408	*/
409	void setColourWriteEnabled(bool enabled);
410
411	/** Sets the culling mode for each pass based on the 'vertex winding'.
412	@note
413	This property has been moved to the Pass class, which is accessible via the
414	Technique. For simplicity, this method allows you to set these properties for
415	every current Technique, and for every current Pass within those Techniques. If
416	you need more precision, retrieve the Technique and Pass instances and set the
417	property there.
418	@see Pass::setCullingMode
419	*/
420	void setCullingMode( CullingMode mode );
421
422	/** Sets the manual culling mode, performed by CPU rather than hardware.
423	@note
424	This property has been moved to the Pass class, which is accessible via the
425	Technique. For simplicity, this method allows you to set these properties for
426	every current Technique, and for every current Pass within those Techniques. If
427	you need more precision, retrieve the Technique and Pass instances and set the
428	property there.
429	@see Pass::setManualCullingMode
430	*/
431	void setManualCullingMode( ManualCullingMode mode );
432
433	/** Sets whether or not dynamic lighting is enabled for every Pass.
434	@note
435	This property has been moved to the Pass class, which is accessible via the
436	Technique. For simplicity, this method allows you to set these properties for
437	every current Technique, and for every current Pass within those Techniques. If
438	you need more precision, retrieve the Technique and Pass instances and set the
439	property there.
440	@see Pass::setLightingEnabled
441	*/
442	void setLightingEnabled(bool enabled);
443
444	/** Sets the type of light shading required
445	@note
446	This property has been moved to the Pass class, which is accessible via the
447	Technique. For simplicity, this method allows you to set these properties for
448	every current Technique, and for every current Pass within those Techniques. If
449	you need more precision, retrieve the Technique and Pass instances and set the
450	property there.
451	@see Pass::setShadingMode
452	*/
453	void setShadingMode( ShadeOptions mode );
454
455	/** Sets the fogging mode applied to each pass.
456	@note
457	This property has been moved to the Pass class, which is accessible via the
458	Technique. For simplicity, this method allows you to set these properties for
459	every current Technique, and for every current Pass within those Techniques. If
460	you need more precision, retrieve the Technique and Pass instances and set the
461	property there.
462	@see Pass::setFog
463	*/
464	void setFog(
465	bool overrideScene,
466	FogMode mode = FOG_NONE,
467	const ColourValue& colour = ColourValue::White,
468	Real expDensity = 0.001, Real linearStart = 0.0, Real linearEnd = 1.0 );
469
470	/** Sets the depth bias to be used for each Pass.
471	@note
472	This property has been moved to the Pass class, which is accessible via the
473	Technique. For simplicity, this method allows you to set these properties for
474	every current Technique, and for every current Pass within those Techniques. If
475	you need more precision, retrieve the Technique and Pass instances and set the
476	property there.
477	@see Pass::setDepthBias
478	*/
479	void setDepthBias(ushort bias);
480
481	/** Set texture filtering for every texture unit in every Technique and Pass
482	@note
483	This property has been moved to the TextureUnitState class, which is accessible via the
484	Technique and Pass. For simplicity, this method allows you to set these properties for
485	every current TeextureUnitState, If you need more precision, retrieve the Technique,
486	Pass and TextureUnitState instances and set the property there.
487	@see TextureUnitState::setTextureFiltering
488	*/
489	void setTextureFiltering(TextureFilterOptions filterType);
490	/** Sets the anisotropy level to be used for all textures.
491	@note
492	This property has been moved to the TextureUnitState class, which is accessible via the
493	Technique and Pass. For simplicity, this method allows you to set these properties for
494	every current TeextureUnitState, If you need more precision, retrieve the Technique,
495	Pass and TextureUnitState instances and set the property there.
496	@see TextureUnitState::setTextureAnisotropy
497	*/
498	void setTextureAnisotropy(int maxAniso);
499
500	/** Sets the kind of blending every pass has with the existing contents of the scene.
501	@note
502	This property has been moved to the Pass class, which is accessible via the
503	Technique. For simplicity, this method allows you to set these properties for
504	every current Technique, and for every current Pass within those Techniques. If
505	you need more precision, retrieve the Technique and Pass instances and set the
506	property there.
507	@see Pass::setSceneBlending
508	*/
509	void setSceneBlending( const SceneBlendType sbt );
510
511	/** Allows very fine control of blending every Pass with the existing contents of the scene.
512	@note
513	This property has been moved to the Pass class, which is accessible via the
514	Technique. For simplicity, this method allows you to set these properties for
515	every current Technique, and for every current Pass within those Techniques. If
516	you need more precision, retrieve the Technique and Pass instances and set the
517	property there.
518	@see Pass::setSceneBlending
519	*/
520	void setSceneBlending( const SceneBlendFactor sourceFactor, const SceneBlendFactor destFactor);
521
522
523	/** Tells the material that it needs recompilation. */
524	void _notifyNeedsRecompile(void);
525
526	/** Sets the distance at which level-of-detail (LOD) levels come into effect.
527	@remarks
528	You should only use this if you have assigned LOD indexes to the Technique
529	instances attached to this Material. If you have done so, you should call this
530	method to determine the distance at which the lowe levels of detail kick in.
531	The decision about what distance is actually used is a combination of this
532	and the LOD bias applied to both the current Camera and the current Entity.
533	@param lodDistances A vector of Reals which indicate the distance at which to
534	switch to lower details. They are listed in LOD index order, starting at index
535	1 (ie the first level down from the highest level 0, which automatically applies
536	from a distance of 0).
537	*/
538	void setLodLevels(const LodDistanceList& lodDistances);
539	/** Gets an iterator over the list of distances at which each LOD comes into effect.
540	@remarks
541	Note that the iterator returned from this method is not totally anagolous to
542	the one passed in by calling setLodLevels - the list includes a zero
543	entry at the start (since the highest LOD starts at distance 0), and
544	the other distances are held as their squared value for efficiency.
545	*/
546	LodDistanceIterator getLodDistanceIterator(void) const;
547
548	/** Gets the LOD index to use at the given distance. */
549	unsigned short getLodIndex(Real d) const;
550	/** Gets the LOD index to use at the given squared distance. */
551	unsigned short getLodIndexSquaredDepth(Real squaredDepth) const;
552
553	/** @copydoc Resource::touch
554	*/
555	void touch(void)
556	{
557	if (mCompilationRequired)
558	compile();
559	// call superclass
560	Resource::touch();
561	}
562
563	/** Gets the compilation status of the material.
564	@return True if the material needs recompilation.
565	*/
566	bool getCompilationRequired() const
567	{
568	return mCompilationRequired;
569	}
570
571
572	};
573
574	/** Specialisation of SharedPtr to allow SharedPtr to be assigned to MaterialPtr
575	@note Has to be a subclass since we need operator=.
576	We could templatise this instead of repeating per Resource subclass,
577	except to do so requires a form VC6 does not support i.e.
578	ResourceSubclassPtr<T> : public SharedPtr<T>
579	*/
580	class _OgreExport MaterialPtr : public SharedPtr<Material>
581	{
582	public:
583	MaterialPtr() : SharedPtr<Material>() {}
584	explicit MaterialPtr(Material* rep) : SharedPtr<Material>(rep) {}
585	MaterialPtr(const MaterialPtr& r) : SharedPtr<Material>(r) {}
586	MaterialPtr(const ResourcePtr& r) : SharedPtr<Material>()
587	{
588	// lock & copy other mutex pointer
589	OGRE_LOCK_MUTEX(*r.OGRE_AUTO_MUTEX_NAME)
590	OGRE_COPY_AUTO_SHARED_MUTEX(r.OGRE_AUTO_MUTEX_NAME)
591	pRep = static_cast<Material*>(r.getPointer());
592	pUseCount = r.useCountPointer();
593	if (pUseCount)
594	{
595	++(*pUseCount);
596	}
597	}
598
599	/// Operator used to convert a ResourcePtr to a MaterialPtr
600	MaterialPtr& operator=(const ResourcePtr& r)
601	{
602	if (pRep == static_cast<Material*>(r.getPointer()))
603	return *this;
604	release();
605	// lock & copy other mutex pointer
606	OGRE_LOCK_MUTEX(*r.OGRE_AUTO_MUTEX_NAME)
607	OGRE_COPY_AUTO_SHARED_MUTEX(r.OGRE_AUTO_MUTEX_NAME)
608	pRep = static_cast<Material*>(r.getPointer());
609	pUseCount = r.useCountPointer();
610	if (pUseCount)
611	{
612	++(*pUseCount);
613	}
614	return *this;
615	}
616	};
617
618	} //namespace
619
620	#endif

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