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source: downloads/OgreMain/src/OgreEntity.cpp @ 1

Last change on this file since 1 was 1, checked in by landauf, 17 years ago

File size: 75.1 KB

Line
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) 2000-2006 Torus Knot Software Ltd
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	You may alternatively use this source under the terms of a specific version of
25	the OGRE Unrestricted License provided you have obtained such a license from
26	Torus Knot Software Ltd.
27	-----------------------------------------------------------------------------
28	*/
29	#include "OgreStableHeaders.h"
30	#include "OgreEntity.h"
31
32	#include "OgreMeshManager.h"
33	#include "OgreSubMesh.h"
34	#include "OgreSubEntity.h"
35	#include "OgreException.h"
36	#include "OgreSceneManager.h"
37	#include "OgreLogManager.h"
38	#include "OgreSkeleton.h"
39	#include "OgreBone.h"
40	#include "OgreCamera.h"
41	#include "OgreTagPoint.h"
42	#include "OgreAxisAlignedBox.h"
43	#include "OgreHardwareBufferManager.h"
44	#include "OgreVector4.h"
45	#include "OgreRoot.h"
46	#include "OgreTechnique.h"
47	#include "OgrePass.h"
48	#include "OgreSkeletonInstance.h"
49	#include "OgreEdgeListBuilder.h"
50	#include "OgreStringConverter.h"
51	#include "OgreAnimation.h"
52	#include "OgreAlignedAllocator.h"
53	#include "OgreOptimisedUtil.h"
54
55	namespace Ogre {
56	//-----------------------------------------------------------------------
57	Entity::Entity ()
58	: mAnimationState(NULL),
59	mSkelAnimVertexData(0),
60	mSoftwareVertexAnimVertexData(0),
61	mHardwareVertexAnimVertexData(0),
62	mPreparedForShadowVolumes(false),
63	mBoneWorldMatrices(NULL),
64	mBoneMatrices(NULL),
65	mNumBoneMatrices(0),
66	mFrameAnimationLastUpdated(std::numeric_limits<unsigned long>::max()),
67	mFrameBonesLastUpdated(NULL),
68	mSharedSkeletonEntities(NULL),
69	mDisplaySkeleton(false),
70	mHardwareAnimation(false),
71	mVertexProgramInUse(false),
72	mSoftwareAnimationRequests(0),
73	mSoftwareAnimationNormalsRequests(0),
74	mMeshLodIndex(0),
75	mMeshLodFactorInv(1.0f),
76	mMinMeshLodIndex(99),
77	mMaxMeshLodIndex(0), // Backwards, remember low value = high detail
78	mMaterialLodFactorInv(1.0f),
79	mMinMaterialLodIndex(99),
80	mMaxMaterialLodIndex(0), // Backwards, remember low value = high detail
81	mSkeletonInstance(0),
82	mInitialised(false),
83	mLastParentXform(Matrix4::ZERO),
84	mFullBoundingBox(),
85	mNormaliseNormals(false)
86	{
87	}
88	//-----------------------------------------------------------------------
89	Entity::Entity( const String& name, MeshPtr& mesh) :
90	MovableObject(name),
91	mMesh(mesh),
92	mAnimationState(NULL),
93	mSkelAnimVertexData(0),
94	mSoftwareVertexAnimVertexData(0),
95	mHardwareVertexAnimVertexData(0),
96	mPreparedForShadowVolumes(false),
97	mBoneWorldMatrices(NULL),
98	mBoneMatrices(NULL),
99	mNumBoneMatrices(0),
100	mFrameAnimationLastUpdated(std::numeric_limits<unsigned long>::max()),
101	mFrameBonesLastUpdated(NULL),
102	mSharedSkeletonEntities(NULL),
103	mDisplaySkeleton(false),
104	mHardwareAnimation(false),
105	mVertexProgramInUse(false),
106	mSoftwareAnimationRequests(0),
107	mSoftwareAnimationNormalsRequests(0),
108	mMeshLodIndex(0),
109	mMeshLodFactorInv(1.0f),
110	mMinMeshLodIndex(99),
111	mMaxMeshLodIndex(0), // Backwards, remember low value = high detail
112	mMaterialLodFactorInv(1.0f),
113	mMinMaterialLodIndex(99),
114	mMaxMaterialLodIndex(0), // Backwards, remember low value = high detail
115	mSkeletonInstance(0),
116	mInitialised(false),
117	mLastParentXform(Matrix4::ZERO),
118	mFullBoundingBox(),
119	mNormaliseNormals(false)
120	{
121	_initialise();
122	}
123	//-----------------------------------------------------------------------
124	void Entity::backgroundLoadingComplete(Resource* res)
125	{
126	if (res == mMesh.get())
127	{
128	// mesh loading has finished, we can construct ourselves now
129	_initialise();
130	}
131	}
132	//-----------------------------------------------------------------------
133	void Entity::_initialise(bool forceReinitialise)
134	{
135	if (forceReinitialise)
136	_deinitialise();
137
138	if (mInitialised)
139	return;
140
141	if (mMesh->isBackgroundLoaded() && !mMesh->isLoaded())
142	{
143	// register for a callback when mesh is finished loading
144	// do this before asking for load to happen to avoid race
145	mMesh->addListener(this);
146	}
147
148	// On-demand load
149	mMesh->load();
150	// If loading failed, or deferred loading isn't done yet, defer
151	// Will get a callback in the case of deferred loading
152	// Skeletons are cascade-loaded so no issues there
153	if (!mMesh->isLoaded())
154	return;
155
156	// Is mesh skeletally animated?
157	if (mMesh->hasSkeleton() && !mMesh->getSkeleton().isNull())
158	{
159	mSkeletonInstance = new SkeletonInstance(mMesh->getSkeleton());
160	mSkeletonInstance->load();
161	}
162
163	// Build main subentity list
164	buildSubEntityList(mMesh, &mSubEntityList);
165
166	// Check if mesh is using manual LOD
167	if (mMesh->isLodManual())
168	{
169	ushort i, numLod;
170	numLod = mMesh->getNumLodLevels();
171	// NB skip LOD 0 which is the original
172	for (i = 1; i < numLod; ++i)
173	{
174	const MeshLodUsage& usage = mMesh->getLodLevel(i);
175	// Manually create entity
176	Entity* lodEnt = new Entity(mName + "Lod" + StringConverter::toString(i),
177	usage.manualMesh);
178	mLodEntityList.push_back(lodEnt);
179	}
180	}
181
182
183	// Initialise the AnimationState, if Mesh has animation
184	if (hasSkeleton())
185	{
186	mFrameBonesLastUpdated = new unsigned long(std::numeric_limits<unsigned long>::max());
187	mNumBoneMatrices = mSkeletonInstance->getNumBones();
188	mBoneMatrices = static_cast<Matrix4>(AlignedMemory::allocate(sizeof(Matrix4) mNumBoneMatrices));
189	}
190	if (hasSkeleton() \|\| hasVertexAnimation())
191	{
192	mAnimationState = new AnimationStateSet();
193	mMesh->_initAnimationState(mAnimationState);
194	prepareTempBlendBuffers();
195	}
196
197	reevaluateVertexProcessing();
198
199
200	mInitialised = true;
201
202	}
203	//-----------------------------------------------------------------------
204	void Entity::_deinitialise(void)
205	{
206	if (!mInitialised)
207	return;
208
209	// Delete submeshes
210	SubEntityList::iterator i, iend;
211	iend = mSubEntityList.end();
212	for (i = mSubEntityList.begin(); i != iend; ++i)
213	{
214	// Delete SubEntity
215	delete *i;
216	}
217	mSubEntityList.clear();
218
219	// Delete LOD entities
220	LODEntityList::iterator li, liend;
221	liend = mLodEntityList.end();
222	for (li = mLodEntityList.begin(); li != liend; ++li)
223	{
224	// Delete
225	delete (*li);
226	}
227	mLodEntityList.clear();
228
229	// Delete shadow renderables
230	ShadowRenderableList::iterator si, siend;
231	siend = mShadowRenderables.end();
232	for (si = mShadowRenderables.begin(); si != siend; ++si)
233	{
234	delete *si;
235	}
236	mShadowRenderables.clear();
237
238	// Detach all child objects, do this manually to avoid needUpdate() call
239	// which can fail because of deleted items
240	detachAllObjectsImpl();
241
242	if (mSkeletonInstance) {
243	AlignedMemory::deallocate(mBoneWorldMatrices);
244
245	if (mSharedSkeletonEntities) {
246	mSharedSkeletonEntities->erase(this);
247	if (mSharedSkeletonEntities->size() == 1)
248	{
249	(*mSharedSkeletonEntities->begin())->stopSharingSkeletonInstance();
250	}
251	// Should never occuring, just in case
252	else if (mSharedSkeletonEntities->empty())
253	{
254	delete mSharedSkeletonEntities;
255	delete mFrameBonesLastUpdated;
256	delete mSkeletonInstance;
257	AlignedMemory::deallocate(mBoneMatrices);
258	delete mAnimationState;
259	}
260	} else {
261	delete mFrameBonesLastUpdated;
262	delete mSkeletonInstance;
263	AlignedMemory::deallocate(mBoneMatrices);
264	delete mAnimationState;
265	}
266	}
267	else if (hasVertexAnimation())
268	{
269	delete mAnimationState;
270	}
271
272	delete mSkelAnimVertexData;
273	delete mSoftwareVertexAnimVertexData;
274	delete mHardwareVertexAnimVertexData;
275
276	mInitialised = false;
277	}
278	//-----------------------------------------------------------------------
279	Entity::~Entity()
280	{
281	_deinitialise();
282	}
283	//-----------------------------------------------------------------------
284	bool Entity::hasVertexAnimation(void) const
285	{
286	return mMesh->hasVertexAnimation();
287	}
288	//-----------------------------------------------------------------------
289	const MeshPtr& Entity::getMesh(void) const
290	{
291	return mMesh;
292	}
293	//-----------------------------------------------------------------------
294	SubEntity* Entity::getSubEntity(unsigned int index) const
295	{
296	if (index >= mSubEntityList.size())
297	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
298	"Index out of bounds.",
299	"Entity::getSubEntity");
300	return mSubEntityList[index];
301	}
302	//-----------------------------------------------------------------------
303	SubEntity* Entity::getSubEntity(const String& name) const
304	{
305	ushort index = mMesh->_getSubMeshIndex(name);
306	return getSubEntity(index);
307	}
308	//-----------------------------------------------------------------------
309	unsigned int Entity::getNumSubEntities(void) const
310	{
311	return static_cast< unsigned int >( mSubEntityList.size() );
312	}
313	//-----------------------------------------------------------------------
314	Entity* Entity::clone( const String& newName) const
315	{
316	if (!mManager)
317	{
318	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND,
319	"Cannot clone an Entity that wasn't created through a "
320	"SceneManager", "Entity::clone");
321	}
322	Entity* newEnt = mManager->createEntity(newName, getMesh()->getName() );
323
324	if (mInitialised)
325	{
326	// Copy material settings
327	SubEntityList::const_iterator i;
328	unsigned int n = 0;
329	for (i = mSubEntityList.begin(); i != mSubEntityList.end(); ++i, ++n)
330	{
331	newEnt->getSubEntity(n)->setMaterialName((*i)->getMaterialName());
332	}
333	if (mAnimationState)
334	{
335	delete newEnt->mAnimationState;
336	newEnt->mAnimationState = new AnimationStateSet(*mAnimationState);
337	}
338	}
339
340	return newEnt;
341	}
342	//-----------------------------------------------------------------------
343	void Entity::setMaterialName(const String& name)
344	{
345	// Set for all subentities
346	SubEntityList::iterator i;
347	for (i = mSubEntityList.begin(); i != mSubEntityList.end(); ++i)
348	{
349	(*i)->setMaterialName(name);
350	}
351
352	}
353	//-----------------------------------------------------------------------
354	void Entity::_notifyCurrentCamera(Camera* cam)
355	{
356	MovableObject::_notifyCurrentCamera(cam);
357
358	// Calculate the LOD
359	if (mParentNode)
360	{
361	Real squaredDepth = mParentNode->getSquaredViewDepth(cam);
362
363	// Do Mesh LOD
364	// Adjust this depth by the entity bias factor
365	Real tmp = squaredDepth * mMeshLodFactorInv;
366	// Now adjust it by the camera bias
367	tmp = tmp * cam->_getLodBiasInverse();
368	// Get the index at this biased depth
369	mMeshLodIndex = mMesh->getLodIndexSquaredDepth(tmp);
370	// Apply maximum detail restriction (remember lower = higher detail)
371	mMeshLodIndex = std::max(mMaxMeshLodIndex, mMeshLodIndex);
372	// Apply minimum detail restriction (remember higher = lower detail)
373	mMeshLodIndex = std::min(mMinMeshLodIndex, mMeshLodIndex);
374
375	// Now do material LOD
376	// Adjust this depth by the entity bias factor
377	tmp = squaredDepth * mMaterialLodFactorInv;
378	// Now adjust it by the camera bias
379	tmp = tmp * cam->_getLodBiasInverse();
380	SubEntityList::iterator i, iend;
381	iend = mSubEntityList.end();
382	for (i = mSubEntityList.begin(); i != iend; ++i)
383	{
384	// Get the index at this biased depth
385	unsigned short idx = (*i)->mpMaterial->getLodIndexSquaredDepth(tmp);
386	// Apply maximum detail restriction (remember lower = higher detail)
387	idx = std::max(mMaxMaterialLodIndex, idx);
388	// Apply minimum detail restriction (remember higher = lower detail)
389	(*i)->mMaterialLodIndex = std::min(mMinMaterialLodIndex, idx);
390
391	// Also invalidate any camera distance cache
392	(*i)->_invalidateCameraCache ();
393	}
394
395
396	}
397	// Notify any child objects
398	ChildObjectList::iterator child_itr = mChildObjectList.begin();
399	ChildObjectList::iterator child_itr_end = mChildObjectList.end();
400	for( ; child_itr != child_itr_end; child_itr++)
401	{
402	(*child_itr).second->_notifyCurrentCamera(cam);
403	}
404	}
405	//-----------------------------------------------------------------------
406	const AxisAlignedBox& Entity::getBoundingBox(void) const
407	{
408	// Get from Mesh
409	mFullBoundingBox = mMesh->getBounds();
410	mFullBoundingBox.merge(getChildObjectsBoundingBox());
411
412	// Don't scale here, this is taken into account when world BBox calculation is done
413
414	return mFullBoundingBox;
415	}
416	//-----------------------------------------------------------------------
417	AxisAlignedBox Entity::getChildObjectsBoundingBox(void) const
418	{
419	AxisAlignedBox aa_box;
420	AxisAlignedBox full_aa_box;
421	full_aa_box.setNull();
422
423	ChildObjectList::const_iterator child_itr = mChildObjectList.begin();
424	ChildObjectList::const_iterator child_itr_end = mChildObjectList.end();
425	for( ; child_itr != child_itr_end; child_itr++)
426	{
427	aa_box = child_itr->second->getBoundingBox();
428	TagPoint* tp = (TagPoint*)child_itr->second->getParentNode();
429	// Use transform local to skeleton since world xform comes later
430	aa_box.transformAffine(tp->_getFullLocalTransform());
431
432	full_aa_box.merge(aa_box);
433	}
434
435	return full_aa_box;
436	}
437	//-----------------------------------------------------------------------
438	const AxisAlignedBox& Entity::getWorldBoundingBox(bool derive) const
439	{
440	if (derive)
441	{
442	// derive child bounding boxes
443	ChildObjectList::const_iterator child_itr = mChildObjectList.begin();
444	ChildObjectList::const_iterator child_itr_end = mChildObjectList.end();
445	for( ; child_itr != child_itr_end; child_itr++)
446	{
447	child_itr->second->getWorldBoundingBox(true);
448	}
449	}
450	return MovableObject::getWorldBoundingBox(derive);
451	}
452	//-----------------------------------------------------------------------
453	const Sphere& Entity::getWorldBoundingSphere(bool derive) const
454	{
455	if (derive)
456	{
457	// derive child bounding boxes
458	ChildObjectList::const_iterator child_itr = mChildObjectList.begin();
459	ChildObjectList::const_iterator child_itr_end = mChildObjectList.end();
460	for( ; child_itr != child_itr_end; child_itr++)
461	{
462	child_itr->second->getWorldBoundingSphere(true);
463	}
464	}
465	return MovableObject::getWorldBoundingSphere(derive);
466
467	}
468	//-----------------------------------------------------------------------
469	void Entity::_updateRenderQueue(RenderQueue* queue)
470	{
471	// Do nothing if not initialised yet
472	if (!mInitialised)
473	return;
474
475	// Check we're not using a manual LOD
476	if (mMeshLodIndex > 0 && mMesh->isLodManual())
477	{
478	// Use alternate entity
479	assert( static_cast< size_t >( mMeshLodIndex - 1 ) < mLodEntityList.size() &&
480	"No LOD EntityList - did you build the manual LODs after creating the entity?");
481	// index - 1 as we skip index 0 (original lod)
482	if (hasSkeleton() && mLodEntityList[mMeshLodIndex - 1]->hasSkeleton())
483	{
484	// Copy the animation state set to lod entity, we assume the lod
485	// entity only has a subset animation states
486	mAnimationState->copyMatchingState(
487	mLodEntityList[mMeshLodIndex - 1]->mAnimationState);
488	}
489	mLodEntityList[mMeshLodIndex - 1]->_updateRenderQueue(queue);
490	return;
491	}
492
493	// Add each visible SubEntity to the queue
494	SubEntityList::iterator i, iend;
495	iend = mSubEntityList.end();
496	for (i = mSubEntityList.begin(); i != iend; ++i)
497	{
498	if((*i)->isVisible())
499	{
500	if(mRenderQueueIDSet)
501	{
502	queue->addRenderable(*i, mRenderQueueID);
503	}
504	else
505	{
506	queue->addRenderable(*i);
507	}
508	}
509	}
510
511	// Since we know we're going to be rendered, take this opportunity to
512	// update the animation
513	if (hasSkeleton() \|\| hasVertexAnimation())
514	{
515	updateAnimation();
516
517	//--- pass this point, we are sure that the transformation matrix of each bone and tagPoint have been updated
518	ChildObjectList::iterator child_itr = mChildObjectList.begin();
519	ChildObjectList::iterator child_itr_end = mChildObjectList.end();
520	for( ; child_itr != child_itr_end; child_itr++)
521	{
522	if ((*child_itr).second->isVisible())
523	(*child_itr).second->_updateRenderQueue(queue);
524	}
525	}
526
527	// HACK to display bones
528	// This won't work if the entity is not centered at the origin
529	// TODO work out a way to allow bones to be rendered when Entity not centered
530	if (mDisplaySkeleton && hasSkeleton())
531	{
532	int numBones = mSkeletonInstance->getNumBones();
533	for (int b = 0; b < numBones; ++b)
534	{
535	Bone* bone = mSkeletonInstance->getBone(b);
536	if(mRenderQueueIDSet)
537	{
538	queue->addRenderable(bone, mRenderQueueID);
539	} else {
540	queue->addRenderable(bone);
541	}
542	}
543	}
544
545
546
547
548	}
549	//-----------------------------------------------------------------------
550	AnimationState* Entity::getAnimationState(const String& name) const
551	{
552	if (!mAnimationState)
553	{
554	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "Entity is not animated",
555	"Entity::getAnimationState");
556	}
557
558	return mAnimationState->getAnimationState(name);
559	}
560	//-----------------------------------------------------------------------
561	AnimationStateSet* Entity::getAllAnimationStates(void) const
562	{
563	return mAnimationState;
564	}
565	//-----------------------------------------------------------------------
566	const String& Entity::getMovableType(void) const
567	{
568	return EntityFactory::FACTORY_TYPE_NAME;
569	}
570	//-----------------------------------------------------------------------
571	bool Entity::tempVertexAnimBuffersBound(void) const
572	{
573	// Do we still have temp buffers for software vertex animation bound?
574	bool ret = true;
575	if (mMesh->sharedVertexData && mMesh->getSharedVertexDataAnimationType() != VAT_NONE)
576	{
577	ret = ret && mTempVertexAnimInfo.buffersCheckedOut(true, false);
578	}
579	for (SubEntityList::const_iterator i = mSubEntityList.begin();
580	i != mSubEntityList.end(); ++i)
581	{
582	SubEntity* sub = *i;
583	if (!sub->getSubMesh()->useSharedVertices
584	&& sub->getSubMesh()->getVertexAnimationType() != VAT_NONE)
585	{
586	ret = ret && sub->_getVertexAnimTempBufferInfo()->buffersCheckedOut(true, false);
587	}
588	}
589	return ret;
590	}
591	//-----------------------------------------------------------------------
592	bool Entity::tempSkelAnimBuffersBound(bool requestNormals) const
593	{
594	// Do we still have temp buffers for software skeleton animation bound?
595	if (mSkelAnimVertexData)
596	{
597	if (!mTempSkelAnimInfo.buffersCheckedOut(true, requestNormals))
598	return false;
599	}
600	for (SubEntityList::const_iterator i = mSubEntityList.begin();
601	i != mSubEntityList.end(); ++i)
602	{
603	SubEntity* sub = *i;
604	if (sub->isVisible() && sub->mSkelAnimVertexData)
605	{
606	if (!sub->mTempSkelAnimInfo.buffersCheckedOut(true, requestNormals))
607	return false;
608	}
609	}
610	return true;
611	}
612	//-----------------------------------------------------------------------
613	void Entity::updateAnimation(void)
614	{
615	// Do nothing if not initialised yet
616	if (!mInitialised)
617	return;
618
619	Root& root = Root::getSingleton();
620	bool hwAnimation = isHardwareAnimationEnabled();
621	bool forcedSwAnimation = getSoftwareAnimationRequests()>0;
622	bool forcedNormals = getSoftwareAnimationNormalsRequests()>0;
623	bool stencilShadows = false;
624	if (getCastShadows() && hasEdgeList() && root._getCurrentSceneManager())
625	stencilShadows = root._getCurrentSceneManager()->isShadowTechniqueStencilBased();
626	bool softwareAnimation = !hwAnimation \|\| stencilShadows \|\| forcedSwAnimation;
627	// Blend normals in s/w only if we're not using h/w animation,
628	// since shadows only require positions
629	bool blendNormals = !hwAnimation \|\| forcedNormals;
630	// Animation dirty if animation state modified or manual bones modified
631	bool animationDirty =
632	(mFrameAnimationLastUpdated != mAnimationState->getDirtyFrameNumber()) \|\|
633	(hasSkeleton() && getSkeleton()->getManualBonesDirty());
634
635	// We only do these tasks if animation is dirty
636	// Or, if we're using a skeleton and manual bones have been moved
637	// Or, if we're using software animation and temp buffers are unbound
638	if (animationDirty \|\|
639	(softwareAnimation && hasVertexAnimation() && !tempVertexAnimBuffersBound()) \|\|
640	(softwareAnimation && hasSkeleton() && !tempSkelAnimBuffersBound(blendNormals)))
641	{
642	if (hasVertexAnimation())
643	{
644	if (softwareAnimation)
645	{
646	// grab & bind temporary buffer for positions
647	if (mSoftwareVertexAnimVertexData
648	&& mMesh->getSharedVertexDataAnimationType() != VAT_NONE)
649	{
650	mTempVertexAnimInfo.checkoutTempCopies(true, false);
651	// NB we suppress hardware upload while doing blend if we're
652	// hardware animation, because the only reason for doing this
653	// is for shadow, which need only be uploaded then
654	mTempVertexAnimInfo.bindTempCopies(mSoftwareVertexAnimVertexData,
655	hwAnimation);
656	}
657	SubEntityList::iterator i, iend;
658	iend = mSubEntityList.end();
659	for (i = mSubEntityList.begin(); i != iend; ++i)
660	{
661	// Blend dedicated geometry
662	SubEntity* se = *i;
663	if (se->isVisible() && se->mSoftwareVertexAnimVertexData
664	&& se->getSubMesh()->getVertexAnimationType() != VAT_NONE)
665	{
666	se->mTempVertexAnimInfo.checkoutTempCopies(true, false);
667	se->mTempVertexAnimInfo.bindTempCopies(se->mSoftwareVertexAnimVertexData,
668	hwAnimation);
669	}
670
671	}
672	}
673	applyVertexAnimation(hwAnimation, stencilShadows);
674	}
675
676	if (hasSkeleton())
677	{
678	cacheBoneMatrices();
679
680	// Software blend?
681	if (softwareAnimation)
682	{
683	const Matrix4* blendMatrices[256];
684
685	// Ok, we need to do a software blend
686	// Firstly, check out working vertex buffers
687	if (mSkelAnimVertexData)
688	{
689	// Blend shared geometry
690	// NB we suppress hardware upload while doing blend if we're
691	// hardware animation, because the only reason for doing this
692	// is for shadow, which need only be uploaded then
693	mTempSkelAnimInfo.checkoutTempCopies(true, blendNormals);
694	mTempSkelAnimInfo.bindTempCopies(mSkelAnimVertexData,
695	hwAnimation);
696	// Prepare blend matrices, TODO: Move out of here
697	Mesh::prepareMatricesForVertexBlend(blendMatrices,
698	mBoneMatrices, mMesh->sharedBlendIndexToBoneIndexMap);
699	// Blend, taking source from either mesh data or morph data
700	Mesh::softwareVertexBlend(
701	(mMesh->getSharedVertexDataAnimationType() != VAT_NONE) ?
702	mSoftwareVertexAnimVertexData : mMesh->sharedVertexData,
703	mSkelAnimVertexData,
704	blendMatrices, mMesh->sharedBlendIndexToBoneIndexMap.size(),
705	blendNormals);
706	}
707	SubEntityList::iterator i, iend;
708	iend = mSubEntityList.end();
709	for (i = mSubEntityList.begin(); i != iend; ++i)
710	{
711	// Blend dedicated geometry
712	SubEntity* se = *i;
713	if (se->isVisible() && se->mSkelAnimVertexData)
714	{
715	se->mTempSkelAnimInfo.checkoutTempCopies(true, blendNormals);
716	se->mTempSkelAnimInfo.bindTempCopies(se->mSkelAnimVertexData,
717	hwAnimation);
718	// Prepare blend matrices, TODO: Move out of here
719	Mesh::prepareMatricesForVertexBlend(blendMatrices,
720	mBoneMatrices, se->mSubMesh->blendIndexToBoneIndexMap);
721	// Blend, taking source from either mesh data or morph data
722	Mesh::softwareVertexBlend(
723	(se->getSubMesh()->getVertexAnimationType() != VAT_NONE)?
724	se->mSoftwareVertexAnimVertexData : se->mSubMesh->vertexData,
725	se->mSkelAnimVertexData,
726	blendMatrices, se->mSubMesh->blendIndexToBoneIndexMap.size(),
727	blendNormals);
728	}
729
730	}
731
732	}
733	}
734
735	// Trigger update of bounding box if necessary
736	if (!mChildObjectList.empty())
737	mParentNode->needUpdate();
738
739	mFrameAnimationLastUpdated = mAnimationState->getDirtyFrameNumber();
740	}
741
742	// Need to update the child object's transforms when animation dirty
743	// or parent node transform has altered.
744	if (hasSkeleton() &&
745	(animationDirty \|\| mLastParentXform != _getParentNodeFullTransform()))
746	{
747	// Cache last parent transform for next frame use too.
748	mLastParentXform = _getParentNodeFullTransform();
749
750	//--- Update the child object's transforms
751	ChildObjectList::iterator child_itr = mChildObjectList.begin();
752	ChildObjectList::iterator child_itr_end = mChildObjectList.end();
753	for( ; child_itr != child_itr_end; child_itr++)
754	{
755	(*child_itr).second->getParentNode()->_update(true, true);
756	}
757
758	// Also calculate bone world matrices, since are used as replacement world matrices,
759	// but only if it's used (when using hardware animation and skeleton animated).
760	if (hwAnimation && _isSkeletonAnimated())
761	{
762	// Allocate bone world matrices on demand, for better memory footprint
763	// when using software animation.
764	if (!mBoneWorldMatrices)
765	{
766	mBoneWorldMatrices =
767	static_cast<Matrix4>(AlignedMemory::allocate(sizeof(Matrix4) mNumBoneMatrices));
768	}
769
770	OptimisedUtil::getImplementation()->concatenateAffineMatrices(
771	mLastParentXform,
772	mBoneMatrices,
773	mBoneWorldMatrices,
774	mNumBoneMatrices);
775	}
776	}
777	}
778	//-----------------------------------------------------------------------
779	void Entity::initHardwareAnimationElements(VertexData* vdata,
780	ushort numberOfElements)
781	{
782	if (vdata->hwAnimationDataList.size() < numberOfElements)
783	{
784	vdata->allocateHardwareAnimationElements(numberOfElements);
785	}
786	// Initialise parametrics incase we don't use all of them
787	for (size_t i = 0; i < vdata->hwAnimationDataList.size(); ++i)
788	{
789	vdata->hwAnimationDataList[i].parametric = 0.0f;
790	}
791	// reset used count
792	vdata->hwAnimDataItemsUsed = 0;
793
794	}
795	//-----------------------------------------------------------------------
796	void Entity::applyVertexAnimation(bool hardwareAnimation, bool stencilShadows)
797	{
798	const MeshPtr& msh = getMesh();
799	bool swAnim = !hardwareAnimation \|\| stencilShadows \|\| (mSoftwareAnimationRequests>0);
800
801	// make sure we have enough hardware animation elements to play with
802	if (hardwareAnimation)
803	{
804	if (mHardwareVertexAnimVertexData
805	&& msh->getSharedVertexDataAnimationType() != VAT_NONE)
806	{
807	initHardwareAnimationElements(mHardwareVertexAnimVertexData,
808	(msh->getSharedVertexDataAnimationType() == VAT_POSE)
809	? mHardwarePoseCount : 1);
810	}
811	for (SubEntityList::iterator si = mSubEntityList.begin();
812	si != mSubEntityList.end(); ++si)
813	{
814	SubEntity* sub = *si;
815	if (sub->getSubMesh()->getVertexAnimationType() != VAT_NONE &&
816	!sub->getSubMesh()->useSharedVertices)
817	{
818	initHardwareAnimationElements(
819	sub->_getHardwareVertexAnimVertexData(),
820	(sub->getSubMesh()->getVertexAnimationType() == VAT_POSE)
821	? sub->mHardwarePoseCount : 1);
822	}
823	}
824
825	}
826	else
827	{
828	// May be blending multiple poses in software
829	// Suppress hardware upload of buffers
830	if (mSoftwareVertexAnimVertexData &&
831	mMesh->getSharedVertexDataAnimationType() == VAT_POSE)
832	{
833	const VertexElement* elem = mSoftwareVertexAnimVertexData
834	->vertexDeclaration->findElementBySemantic(VES_POSITION);
835	HardwareVertexBufferSharedPtr buf = mSoftwareVertexAnimVertexData
836	->vertexBufferBinding->getBuffer(elem->getSource());
837	buf->suppressHardwareUpdate(true);
838	}
839	for (SubEntityList::iterator si = mSubEntityList.begin();
840	si != mSubEntityList.end(); ++si)
841	{
842	SubEntity* sub = *si;
843	if (!sub->getSubMesh()->useSharedVertices &&
844	sub->getSubMesh()->getVertexAnimationType() == VAT_POSE)
845	{
846	VertexData* data = sub->_getSoftwareVertexAnimVertexData();
847	const VertexElement* elem = data->vertexDeclaration
848	->findElementBySemantic(VES_POSITION);
849	HardwareVertexBufferSharedPtr buf = data
850	->vertexBufferBinding->getBuffer(elem->getSource());
851	buf->suppressHardwareUpdate(true);
852	}
853	}
854	}
855
856
857	// Now apply the animation(s)
858	// Note - you should only apply one morph animation to each set of vertex data
859	// at once; if you do more, only the last one will actually apply
860	markBuffersUnusedForAnimation();
861	ConstEnabledAnimationStateIterator animIt = mAnimationState->getEnabledAnimationStateIterator();
862	while(animIt.hasMoreElements())
863	{
864	const AnimationState* state = animIt.getNext();
865	Animation* anim = msh->_getAnimationImpl(state->getAnimationName());
866	if (anim)
867	{
868	anim->apply(this, state->getTimePosition(), state->getWeight(),
869	swAnim, hardwareAnimation);
870	}
871	}
872	// Deal with cases where no animation applied
873	restoreBuffersForUnusedAnimation(hardwareAnimation);
874
875	// Unsuppress hardware upload if we suppressed it
876	if (!hardwareAnimation)
877	{
878	if (mSoftwareVertexAnimVertexData &&
879	msh->getSharedVertexDataAnimationType() == VAT_POSE)
880	{
881	const VertexElement* elem = mSoftwareVertexAnimVertexData
882	->vertexDeclaration->findElementBySemantic(VES_POSITION);
883	HardwareVertexBufferSharedPtr buf = mSoftwareVertexAnimVertexData
884	->vertexBufferBinding->getBuffer(elem->getSource());
885	buf->suppressHardwareUpdate(false);
886	}
887	for (SubEntityList::iterator si = mSubEntityList.begin();
888	si != mSubEntityList.end(); ++si)
889	{
890	SubEntity* sub = *si;
891	if (!sub->getSubMesh()->useSharedVertices &&
892	sub->getSubMesh()->getVertexAnimationType() == VAT_POSE)
893	{
894	VertexData* data = sub->_getSoftwareVertexAnimVertexData();
895	const VertexElement* elem = data->vertexDeclaration
896	->findElementBySemantic(VES_POSITION);
897	HardwareVertexBufferSharedPtr buf = data
898	->vertexBufferBinding->getBuffer(elem->getSource());
899	buf->suppressHardwareUpdate(false);
900	}
901	}
902	}
903
904	}
905	//-----------------------------------------------------------------------------
906	void Entity::markBuffersUnusedForAnimation(void)
907	{
908	mVertexAnimationAppliedThisFrame = false;
909	for (SubEntityList::iterator i = mSubEntityList.begin();
910	i != mSubEntityList.end(); ++i)
911	{
912	(*i)->_markBuffersUnusedForAnimation();
913	}
914	}
915	//-----------------------------------------------------------------------------
916	void Entity::_markBuffersUsedForAnimation(void)
917	{
918	mVertexAnimationAppliedThisFrame = true;
919	// no cascade
920	}
921	//-----------------------------------------------------------------------------
922	void Entity::restoreBuffersForUnusedAnimation(bool hardwareAnimation)
923	{
924	// Rebind original positions if:
925	// We didn't apply any animation and
926	// We're morph animated (hardware binds keyframe, software is missing)
927	// or we're pose animated and software (hardware is fine, still bound)
928	if (mMesh->sharedVertexData &&
929	!mVertexAnimationAppliedThisFrame &&
930	(!hardwareAnimation \|\| mMesh->getSharedVertexDataAnimationType() == VAT_MORPH))
931	{
932	const VertexElement* srcPosElem =
933	mMesh->sharedVertexData->vertexDeclaration->findElementBySemantic(VES_POSITION);
934	HardwareVertexBufferSharedPtr srcBuf =
935	mMesh->sharedVertexData->vertexBufferBinding->getBuffer(
936	srcPosElem->getSource());
937
938	// Bind to software
939	const VertexElement* destPosElem =
940	mSoftwareVertexAnimVertexData->vertexDeclaration->findElementBySemantic(VES_POSITION);
941	mSoftwareVertexAnimVertexData->vertexBufferBinding->setBinding(
942	destPosElem->getSource(), srcBuf);
943
944	}
945
946	// rebind any missing hardware pose buffers
947	// Caused by not having any animations enabled, or keyframes which reference
948	// no poses
949	if (mMesh->sharedVertexData && hardwareAnimation
950	&& mMesh->getSharedVertexDataAnimationType() == VAT_POSE)
951	{
952	bindMissingHardwarePoseBuffers(mMesh->sharedVertexData, mHardwareVertexAnimVertexData);
953	}
954
955
956	for (SubEntityList::iterator i = mSubEntityList.begin();
957	i != mSubEntityList.end(); ++i)
958	{
959	(*i)->_restoreBuffersForUnusedAnimation(hardwareAnimation);
960	}
961
962	}
963	//---------------------------------------------------------------------
964	void Entity::bindMissingHardwarePoseBuffers(const VertexData* srcData,
965	VertexData* destData)
966	{
967	// For hardware pose animation, also make sure we've bound buffers to all the elements
968	// required - if there are missing bindings for elements in use,
969	// some rendersystems can complain because elements refer
970	// to an unbound source.
971	// Get the original position source, we'll use this to fill gaps
972	const VertexElement* srcPosElem =
973	srcData->vertexDeclaration->findElementBySemantic(VES_POSITION);
974	HardwareVertexBufferSharedPtr srcBuf =
975	srcData->vertexBufferBinding->getBuffer(
976	srcPosElem->getSource());
977
978	for (VertexData::HardwareAnimationDataList::const_iterator i = destData->hwAnimationDataList.begin();
979	i != destData->hwAnimationDataList.end(); ++i)
980	{
981	const VertexData::HardwareAnimationData& animData = *i;
982	if (!destData->vertexBufferBinding->isBufferBound(
983	animData.targetVertexElement->getSource()))
984	{
985	// Bind to a safe default
986	destData->vertexBufferBinding->setBinding(
987	animData.targetVertexElement->getSource(), srcBuf);
988	}
989	}
990
991	}
992	//-----------------------------------------------------------------------
993	void Entity::_updateAnimation(void)
994	{
995	// Externally visible method
996	if (hasSkeleton() \|\| hasVertexAnimation())
997	{
998	updateAnimation();
999	}
1000	}
1001	//-----------------------------------------------------------------------
1002	bool Entity::_isAnimated(void) const
1003	{
1004	return (mAnimationState && mAnimationState->hasEnabledAnimationState()) \|\|
1005	(getSkeleton() && getSkeleton()->hasManualBones());
1006	}
1007	//-----------------------------------------------------------------------
1008	bool Entity::_isSkeletonAnimated(void) const
1009	{
1010	return getSkeleton() &&
1011	(mAnimationState->hasEnabledAnimationState() \|\| getSkeleton()->hasManualBones());
1012	}
1013	//-----------------------------------------------------------------------
1014	VertexData* Entity::_getSkelAnimVertexData(void) const
1015	{
1016	assert (mSkelAnimVertexData && "Not software skinned or has no shared vertex data!");
1017	return mSkelAnimVertexData;
1018	}
1019	//-----------------------------------------------------------------------
1020	VertexData* Entity::_getSoftwareVertexAnimVertexData(void) const
1021	{
1022	assert (mSoftwareVertexAnimVertexData && "Not vertex animated or has no shared vertex data!");
1023	return mSoftwareVertexAnimVertexData;
1024	}
1025	//-----------------------------------------------------------------------
1026	VertexData* Entity::_getHardwareVertexAnimVertexData(void) const
1027	{
1028	assert (mHardwareVertexAnimVertexData && "Not vertex animated or has no shared vertex data!");
1029	return mHardwareVertexAnimVertexData;
1030	}
1031	//-----------------------------------------------------------------------
1032	TempBlendedBufferInfo* Entity::_getSkelAnimTempBufferInfo(void)
1033	{
1034	return &mTempSkelAnimInfo;
1035	}
1036	//-----------------------------------------------------------------------
1037	TempBlendedBufferInfo* Entity::_getVertexAnimTempBufferInfo(void)
1038	{
1039	return &mTempVertexAnimInfo;
1040	}
1041	//-----------------------------------------------------------------------
1042	void Entity::cacheBoneMatrices(void)
1043	{
1044	Root& root = Root::getSingleton();
1045	unsigned long currentFrameNumber = root.getCurrentFrameNumber();
1046	if (*mFrameBonesLastUpdated != currentFrameNumber) {
1047
1048	mSkeletonInstance->setAnimationState(*mAnimationState);
1049	mSkeletonInstance->_getBoneMatrices(mBoneMatrices);
1050	*mFrameBonesLastUpdated = currentFrameNumber;
1051	}
1052	}
1053	//-----------------------------------------------------------------------
1054	void Entity::setDisplaySkeleton(bool display)
1055	{
1056	mDisplaySkeleton = display;
1057	}
1058	//-----------------------------------------------------------------------
1059	bool Entity::getDisplaySkeleton(void) const
1060	{
1061	return mDisplaySkeleton;
1062	}
1063	//-----------------------------------------------------------------------
1064	Entity* Entity::getManualLodLevel(size_t index) const
1065	{
1066	assert(index < mLodEntityList.size());
1067
1068	return mLodEntityList[index];
1069	}
1070	//-----------------------------------------------------------------------
1071	size_t Entity::getNumManualLodLevels(void) const
1072	{
1073	return mLodEntityList.size();
1074	}
1075	//-----------------------------------------------------------------------
1076	void Entity::setMeshLodBias(Real factor, ushort maxDetailIndex, ushort minDetailIndex)
1077	{
1078	assert(factor > 0.0f && "Bias factor must be > 0!");
1079	mMeshLodFactorInv = 1.0f / factor;
1080	mMaxMeshLodIndex = maxDetailIndex;
1081	mMinMeshLodIndex = minDetailIndex;
1082
1083	}
1084	//-----------------------------------------------------------------------
1085	void Entity::setMaterialLodBias(Real factor, ushort maxDetailIndex, ushort minDetailIndex)
1086	{
1087	assert(factor > 0.0f && "Bias factor must be > 0!");
1088	mMaterialLodFactorInv = 1.0f / factor;
1089	mMaxMaterialLodIndex = maxDetailIndex;
1090	mMinMaterialLodIndex = minDetailIndex;
1091
1092	}
1093	//-----------------------------------------------------------------------
1094	void Entity::buildSubEntityList(MeshPtr& mesh, SubEntityList* sublist)
1095	{
1096	// Create SubEntities
1097	unsigned short i, numSubMeshes;
1098	SubMesh* subMesh;
1099	SubEntity* subEnt;
1100
1101	numSubMeshes = mesh->getNumSubMeshes();
1102	for (i = 0; i < numSubMeshes; ++i)
1103	{
1104	subMesh = mesh->getSubMesh(i);
1105	subEnt = new SubEntity(this, subMesh);
1106	if (subMesh->isMatInitialised())
1107	subEnt->setMaterialName(subMesh->getMaterialName());
1108	sublist->push_back(subEnt);
1109	}
1110	}
1111	//-----------------------------------------------------------------------
1112	void Entity::setPolygonModeOverrideable(bool overrideable)
1113	{
1114	SubEntityList::iterator i, iend;
1115	iend = mSubEntityList.end();
1116
1117	for( i = mSubEntityList.begin(); i != iend; ++i )
1118	{
1119	(*i)->setPolygonModeOverrideable(overrideable);
1120	}
1121	}
1122
1123	//-----------------------------------------------------------------------
1124	TagPoint* Entity::attachObjectToBone(const String &boneName, MovableObject *pMovable, const Quaternion &offsetOrientation, const Vector3 &offsetPosition)
1125	{
1126	if (mChildObjectList.find(pMovable->getName()) != mChildObjectList.end())
1127	{
1128	OGRE_EXCEPT(Exception::ERR_DUPLICATE_ITEM,
1129	"An object with the name " + pMovable->getName() + " already attached",
1130	"Entity::attachObjectToBone");
1131	}
1132	if(pMovable->isAttached())
1133	{
1134	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Object already attached to a sceneNode or a Bone",
1135	"Entity::attachObjectToBone");
1136	}
1137	if (!hasSkeleton())
1138	{
1139	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "This entity's mesh has no skeleton to attach object to.",
1140	"Entity::attachObjectToBone");
1141	}
1142	Bone* bone = mSkeletonInstance->getBone(boneName);
1143	if (!bone)
1144	{
1145	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS, "Cannot locate bone named " + boneName,
1146	"Entity::attachObjectToBone");
1147	}
1148
1149	TagPoint *tp = mSkeletonInstance->createTagPointOnBone(
1150	bone, offsetOrientation, offsetPosition);
1151	tp->setParentEntity(this);
1152	tp->setChildObject(pMovable);
1153
1154	attachObjectImpl(pMovable, tp);
1155
1156	// Trigger update of bounding box if necessary
1157	if (mParentNode)
1158	mParentNode->needUpdate();
1159
1160	return tp;
1161	}
1162
1163	//-----------------------------------------------------------------------
1164	void Entity::attachObjectImpl(MovableObject pObject, TagPoint pAttachingPoint)
1165	{
1166	assert(mChildObjectList.find(pObject->getName()) == mChildObjectList.end());
1167	mChildObjectList[pObject->getName()] = pObject;
1168	pObject->_notifyAttached(pAttachingPoint, true);
1169	}
1170
1171	//-----------------------------------------------------------------------
1172	MovableObject* Entity::detachObjectFromBone(const String &name)
1173	{
1174	ChildObjectList::iterator i = mChildObjectList.find(name);
1175
1176	if (i == mChildObjectList.end())
1177	{
1178	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND, "No child object entry found named " + name,
1179	"Entity::detachObjectFromBone");
1180	}
1181	MovableObject *obj = i->second;
1182	detachObjectImpl(obj);
1183	mChildObjectList.erase(i);
1184
1185	// Trigger update of bounding box if necessary
1186	if (mParentNode)
1187	mParentNode->needUpdate();
1188
1189	return obj;
1190	}
1191	//-----------------------------------------------------------------------
1192	void Entity::detachObjectFromBone(MovableObject* obj)
1193	{
1194	ChildObjectList::iterator i, iend;
1195	iend = mChildObjectList.end();
1196	for (i = mChildObjectList.begin(); i != iend; ++i)
1197	{
1198	if (i->second == obj)
1199	{
1200	detachObjectImpl(obj);
1201	mChildObjectList.erase(i);
1202
1203	// Trigger update of bounding box if necessary
1204	if (mParentNode)
1205	mParentNode->needUpdate();
1206	break;
1207	}
1208	}
1209	}
1210	//-----------------------------------------------------------------------
1211	void Entity::detachAllObjectsFromBone(void)
1212	{
1213	detachAllObjectsImpl();
1214
1215	// Trigger update of bounding box if necessary
1216	if (mParentNode)
1217	mParentNode->needUpdate();
1218	}
1219	//-----------------------------------------------------------------------
1220	void Entity::detachObjectImpl(MovableObject* pObject)
1221	{
1222	TagPoint* tp = static_cast<TagPoint*>(pObject->getParentNode());
1223
1224	// free the TagPoint so we can reuse it later
1225	mSkeletonInstance->freeTagPoint(tp);
1226
1227	pObject->_notifyAttached((TagPoint*)0);
1228	}
1229	//-----------------------------------------------------------------------
1230	void Entity::detachAllObjectsImpl(void)
1231	{
1232	ChildObjectList::const_iterator i, iend;
1233	iend = mChildObjectList.end();
1234	for (i = mChildObjectList.begin(); i != iend; ++i)
1235	{
1236	detachObjectImpl(i->second);
1237	}
1238	mChildObjectList.clear();
1239	}
1240
1241	//-----------------------------------------------------------------------
1242	Entity::ChildObjectListIterator Entity::getAttachedObjectIterator()
1243	{
1244	return ChildObjectListIterator(mChildObjectList.begin(), mChildObjectList.end());
1245	}
1246	//-----------------------------------------------------------------------
1247	Real Entity::getBoundingRadius(void) const
1248	{
1249	Real rad = mMesh->getBoundingSphereRadius();
1250	// Scale by largest scale factor
1251	if (mParentNode)
1252	{
1253	const Vector3& s = mParentNode->_getDerivedScale();
1254	rad *= std::max(s.x, std::max(s.y, s.z));
1255	}
1256	return rad;
1257	}
1258	//-----------------------------------------------------------------------
1259	void Entity::prepareTempBlendBuffers(void)
1260	{
1261	if (mSkelAnimVertexData)
1262	{
1263	delete mSkelAnimVertexData;
1264	mSkelAnimVertexData = 0;
1265	}
1266	if (mSoftwareVertexAnimVertexData)
1267	{
1268	delete mSoftwareVertexAnimVertexData;
1269	mSoftwareVertexAnimVertexData = 0;
1270	}
1271	if (mHardwareVertexAnimVertexData)
1272	{
1273	delete mHardwareVertexAnimVertexData;
1274	mHardwareVertexAnimVertexData = 0;
1275	}
1276
1277	if (hasVertexAnimation())
1278	{
1279	// Shared data
1280	if (mMesh->sharedVertexData
1281	&& mMesh->getSharedVertexDataAnimationType() != VAT_NONE)
1282	{
1283	// Create temporary vertex blend info
1284	// Prepare temp vertex data if needed
1285	// Clone without copying data, don't remove any blending info
1286	// (since if we skeletally animate too, we need it)
1287	mSoftwareVertexAnimVertexData = mMesh->sharedVertexData->clone(false);
1288	extractTempBufferInfo(mSoftwareVertexAnimVertexData, &mTempVertexAnimInfo);
1289
1290	// Also clone for hardware usage, don't remove blend info since we'll
1291	// need it if we also hardware skeletally animate
1292	mHardwareVertexAnimVertexData = mMesh->sharedVertexData->clone(false);
1293	}
1294	}
1295
1296	if (hasSkeleton())
1297	{
1298	// Shared data
1299	if (mMesh->sharedVertexData)
1300	{
1301	// Create temporary vertex blend info
1302	// Prepare temp vertex data if needed
1303	// Clone without copying data, remove blending info
1304	// (since blend is performed in software)
1305	mSkelAnimVertexData =
1306	cloneVertexDataRemoveBlendInfo(mMesh->sharedVertexData);
1307	extractTempBufferInfo(mSkelAnimVertexData, &mTempSkelAnimInfo);
1308	}
1309
1310	}
1311
1312	// Do SubEntities
1313	SubEntityList::iterator i, iend;
1314	iend = mSubEntityList.end();
1315	for (i = mSubEntityList.begin(); i != iend; ++i)
1316	{
1317	SubEntity* s = *i;
1318	s->prepareTempBlendBuffers();
1319	}
1320
1321	// It's prepared for shadow volumes only if mesh has been prepared for shadow volumes.
1322	mPreparedForShadowVolumes = mMesh->isPreparedForShadowVolumes();
1323	}
1324	//-----------------------------------------------------------------------
1325	void Entity::extractTempBufferInfo(VertexData* sourceData, TempBlendedBufferInfo* info)
1326	{
1327	info->extractFrom(sourceData);
1328	}
1329	//-----------------------------------------------------------------------
1330	VertexData* Entity::cloneVertexDataRemoveBlendInfo(const VertexData* source)
1331	{
1332	// Clone without copying data
1333	VertexData* ret = source->clone(false);
1334	const VertexElement* blendIndexElem =
1335	source->vertexDeclaration->findElementBySemantic(VES_BLEND_INDICES);
1336	const VertexElement* blendWeightElem =
1337	source->vertexDeclaration->findElementBySemantic(VES_BLEND_WEIGHTS);
1338	// Remove blend index
1339	if (blendIndexElem)
1340	{
1341	// Remove buffer reference
1342	ret->vertexBufferBinding->unsetBinding(blendIndexElem->getSource());
1343
1344	}
1345	if (blendWeightElem &&
1346	blendWeightElem->getSource() != blendIndexElem->getSource())
1347	{
1348	// Remove buffer reference
1349	ret->vertexBufferBinding->unsetBinding(blendWeightElem->getSource());
1350	}
1351	// remove elements from declaration
1352	ret->vertexDeclaration->removeElement(VES_BLEND_INDICES);
1353	ret->vertexDeclaration->removeElement(VES_BLEND_WEIGHTS);
1354
1355	// Close gaps in bindings for effective and safely
1356	ret->closeGapsInBindings();
1357
1358	return ret;
1359	}
1360	//-----------------------------------------------------------------------
1361	EdgeData* Entity::getEdgeList(void)
1362	{
1363	// Get from Mesh
1364	return mMesh->getEdgeList(mMeshLodIndex);
1365	}
1366	//-----------------------------------------------------------------------
1367	bool Entity::hasEdgeList(void)
1368	{
1369	// check if mesh has an edge list attached
1370	// give mesh a chance to built it if scheduled
1371	return (mMesh->getEdgeList(mMeshLodIndex) != NULL);
1372	}
1373	//-----------------------------------------------------------------------
1374	void Entity::reevaluateVertexProcessing(void)
1375	{
1376	// init
1377	mHardwareAnimation = false;
1378	mVertexProgramInUse = false; // assume false because we just assign this
1379	bool firstPass = true;
1380
1381	SubEntityList::iterator i, iend;
1382	iend = mSubEntityList.end();
1383	for (i = mSubEntityList.begin(); i != iend; ++i)
1384	{
1385	SubEntity* sub = *i;
1386	const MaterialPtr& m = sub->getMaterial();
1387	// Make sure it's loaded
1388	m->load();
1389	Technique* t = m->getBestTechnique();
1390	if (!t)
1391	{
1392	// No supported techniques
1393	continue;
1394	}
1395	Pass* p = t->getPass(0);
1396	if (!p)
1397	{
1398	// No passes, invalid
1399	continue;
1400	}
1401	if (p->hasVertexProgram())
1402	{
1403	// If one material uses a vertex program, set this flag
1404	// Causes some special processing like forcing a separate light cap
1405	mVertexProgramInUse = true;
1406
1407	if (hasSkeleton())
1408	{
1409	// All materials must support skinning for us to consider using
1410	// hardware animation - if one fails we use software
1411	if (firstPass)
1412	{
1413	mHardwareAnimation = p->getVertexProgram()->isSkeletalAnimationIncluded();
1414	firstPass = false;
1415	}
1416	else
1417	{
1418	mHardwareAnimation = mHardwareAnimation &&
1419	p->getVertexProgram()->isSkeletalAnimationIncluded();
1420	}
1421	}
1422
1423	VertexAnimationType animType = VAT_NONE;
1424	if (sub->getSubMesh()->useSharedVertices)
1425	{
1426	animType = mMesh->getSharedVertexDataAnimationType();
1427	}
1428	else
1429	{
1430	animType = sub->getSubMesh()->getVertexAnimationType();
1431	}
1432	if (animType == VAT_MORPH)
1433	{
1434	// All materials must support morph animation for us to consider using
1435	// hardware animation - if one fails we use software
1436	if (firstPass)
1437	{
1438	mHardwareAnimation = p->getVertexProgram()->isMorphAnimationIncluded();
1439	firstPass = false;
1440	}
1441	else
1442	{
1443	mHardwareAnimation = mHardwareAnimation &&
1444	p->getVertexProgram()->isMorphAnimationIncluded();
1445	}
1446	}
1447	else if (animType == VAT_POSE)
1448	{
1449	// All materials must support pose animation for us to consider using
1450	// hardware animation - if one fails we use software
1451	if (firstPass)
1452	{
1453	mHardwareAnimation = p->getVertexProgram()->isPoseAnimationIncluded();
1454	if (sub->getSubMesh()->useSharedVertices)
1455	mHardwarePoseCount = p->getVertexProgram()->getNumberOfPosesIncluded();
1456	else
1457	sub->mHardwarePoseCount = p->getVertexProgram()->getNumberOfPosesIncluded();
1458	firstPass = false;
1459	}
1460	else
1461	{
1462	mHardwareAnimation = mHardwareAnimation &&
1463	p->getVertexProgram()->isPoseAnimationIncluded();
1464	if (sub->getSubMesh()->useSharedVertices)
1465	mHardwarePoseCount = std::max(mHardwarePoseCount,
1466	p->getVertexProgram()->getNumberOfPosesIncluded());
1467	else
1468	sub->mHardwarePoseCount = std::max(sub->mHardwarePoseCount,
1469	p->getVertexProgram()->getNumberOfPosesIncluded());
1470	}
1471	}
1472
1473	}
1474	}
1475
1476	// Should be force update of animation if they exists, due reevaluate
1477	// vertex processing might switchs between hardware/software animation,
1478	// and then we'll end with NULL or incorrect mBoneWorldMatrices, or
1479	// incorrect blended software animation buffers.
1480	if (mAnimationState)
1481	{
1482	mFrameAnimationLastUpdated = mAnimationState->getDirtyFrameNumber() - 1;
1483	}
1484	}
1485	//-----------------------------------------------------------------------
1486	ShadowCaster::ShadowRenderableListIterator
1487	Entity::getShadowVolumeRenderableIterator(
1488	ShadowTechnique shadowTechnique, const Light* light,
1489	HardwareIndexBufferSharedPtr* indexBuffer,
1490	bool extrude, Real extrusionDistance, unsigned long flags)
1491	{
1492	assert(indexBuffer && "Only external index buffers are supported right now");
1493	assert((*indexBuffer)->getType() == HardwareIndexBuffer::IT_16BIT &&
1494	"Only 16-bit indexes supported for now");
1495
1496	// Potentially delegate to LOD entity
1497	if (mMesh->isLodManual() && mMeshLodIndex > 0)
1498	{
1499	// Use alternate entity
1500	assert( static_cast< size_t >( mMeshLodIndex - 1 ) < mLodEntityList.size() &&
1501	"No LOD EntityList - did you build the manual LODs after creating the entity?");
1502	// delegate, we're using manual LOD and not the top lod index
1503	if (hasSkeleton() && mLodEntityList[mMeshLodIndex - 1]->hasSkeleton())
1504	{
1505	// Copy the animation state set to lod entity, we assume the lod
1506	// entity only has a subset animation states
1507	mAnimationState->copyMatchingState(
1508	mLodEntityList[mMeshLodIndex - 1]->mAnimationState);
1509	}
1510	return mLodEntityList[mMeshLodIndex-1]->getShadowVolumeRenderableIterator(
1511	shadowTechnique, light, indexBuffer, extrude,
1512	extrusionDistance, flags);
1513	}
1514
1515
1516	// Prepare temp buffers if required
1517	if (!mPreparedForShadowVolumes)
1518	{
1519	mMesh->prepareForShadowVolume();
1520	// reset frame last updated to force update of animations if they exist
1521	if (mAnimationState)
1522	mFrameAnimationLastUpdated = mAnimationState->getDirtyFrameNumber() - 1;
1523	// re-prepare buffers
1524	prepareTempBlendBuffers();
1525	}
1526
1527
1528	bool hasAnimation = (hasSkeleton() \|\| hasVertexAnimation());
1529
1530	// Update any animation
1531	if (hasAnimation)
1532	{
1533	updateAnimation();
1534	}
1535
1536	// Calculate the object space light details
1537	Vector4 lightPos = light->getAs4DVector();
1538	Matrix4 world2Obj = mParentNode->_getFullTransform().inverseAffine();
1539	lightPos = world2Obj.transformAffine(lightPos);
1540
1541	// We need to search the edge list for silhouette edges
1542	EdgeData* edgeList = getEdgeList();
1543
1544	if (!edgeList)
1545	{
1546	// we can't get an edge list for some reason, return blank
1547	// really we shouldn't be able to get here, but this is a safeguard
1548	return ShadowRenderableListIterator(mShadowRenderables.begin(), mShadowRenderables.end());
1549	}
1550
1551	// Init shadow renderable list if required
1552	bool init = mShadowRenderables.empty();
1553
1554	EdgeData::EdgeGroupList::iterator egi;
1555	ShadowRenderableList::iterator si, siend;
1556	EntityShadowRenderable* esr = 0;
1557	if (init)
1558	mShadowRenderables.resize(edgeList->edgeGroups.size());
1559
1560	bool isAnimated = hasAnimation;
1561	bool updatedSharedGeomNormals = false;
1562	siend = mShadowRenderables.end();
1563	egi = edgeList->edgeGroups.begin();
1564	for (si = mShadowRenderables.begin(); si != siend; ++si, ++egi)
1565	{
1566	const VertexData *pVertData;
1567	if (isAnimated)
1568	{
1569	// Use temp buffers
1570	pVertData = findBlendedVertexData(egi->vertexData);
1571	}
1572	else
1573	{
1574	pVertData = egi->vertexData;
1575	}
1576	if (init)
1577	{
1578	// Try to find corresponding SubEntity; this allows the
1579	// linkage of visibility between ShadowRenderable and SubEntity
1580	SubEntity* subent = findSubEntityForVertexData(egi->vertexData);
1581	// Create a new renderable, create a separate light cap if
1582	// we're using a vertex program (either for this model, or
1583	// for extruding the shadow volume) since otherwise we can
1584	// get depth-fighting on the light cap
1585
1586	*si = new EntityShadowRenderable(this, indexBuffer, pVertData,
1587	mVertexProgramInUse \|\| !extrude, subent);
1588	}
1589	else
1590	{
1591	// If we have animation, we have no guarantee that the position
1592	// buffer we used last frame is the same one we used last frame
1593	// since a temporary buffer is requested each frame
1594	// therefore, we need to update the EntityShadowRenderable
1595	// with the current position buffer
1596	static_cast<EntityShadowRenderable>(si)->rebindPositionBuffer(pVertData, hasAnimation);
1597
1598	}
1599	// Get shadow renderable
1600	esr = static_cast<EntityShadowRenderable>(si);
1601	HardwareVertexBufferSharedPtr esrPositionBuffer = esr->getPositionBuffer();
1602	// For animated entities we need to recalculate the face normals
1603	if (hasAnimation)
1604	{
1605	if (egi->vertexData != mMesh->sharedVertexData \|\| !updatedSharedGeomNormals)
1606	{
1607	// recalculate face normals
1608	edgeList->updateFaceNormals(egi->vertexSet, esrPositionBuffer);
1609	// If we're not extruding in software we still need to update
1610	// the latter part of the buffer (the hardware extruded part)
1611	// with the latest animated positions
1612	if (!extrude)
1613	{
1614	// Lock, we'll be locking the (suppressed hardware update) shadow buffer
1615	float* pSrc = static_cast<float*>(
1616	esrPositionBuffer->lock(HardwareBuffer::HBL_NORMAL));
1617	float* pDest = pSrc + (egi->vertexData->vertexCount * 3);
1618	memcpy(pDest, pSrc, sizeof(float) * 3 * egi->vertexData->vertexCount);
1619	esrPositionBuffer->unlock();
1620	}
1621	if (egi->vertexData == mMesh->sharedVertexData)
1622	{
1623	updatedSharedGeomNormals = true;
1624	}
1625	}
1626	}
1627	// Extrude vertices in software if required
1628	if (extrude)
1629	{
1630	extrudeVertices(esrPositionBuffer,
1631	egi->vertexData->vertexCount,
1632	lightPos, extrusionDistance);
1633
1634	}
1635	// Stop suppressing hardware update now, if we were
1636	esrPositionBuffer->suppressHardwareUpdate(false);
1637
1638	}
1639	// Calc triangle light facing
1640	updateEdgeListLightFacing(edgeList, lightPos);
1641
1642	// Generate indexes and update renderables
1643	generateShadowVolume(edgeList, *indexBuffer, light,
1644	mShadowRenderables, flags);
1645
1646
1647	return ShadowRenderableListIterator(mShadowRenderables.begin(), mShadowRenderables.end());
1648	}
1649	//-----------------------------------------------------------------------
1650	const VertexData* Entity::findBlendedVertexData(const VertexData* orig)
1651	{
1652	bool skel = hasSkeleton();
1653
1654	if (orig == mMesh->sharedVertexData)
1655	{
1656	return skel? mSkelAnimVertexData : mSoftwareVertexAnimVertexData;
1657	}
1658	SubEntityList::iterator i, iend;
1659	iend = mSubEntityList.end();
1660	for (i = mSubEntityList.begin(); i != iend; ++i)
1661	{
1662	SubEntity* se = *i;
1663	if (orig == se->getSubMesh()->vertexData)
1664	{
1665	return skel? se->_getSkelAnimVertexData() : se->_getSoftwareVertexAnimVertexData();
1666	}
1667	}
1668	// None found
1669	OGRE_EXCEPT(Exception::ERR_ITEM_NOT_FOUND,
1670	"Cannot find blended version of the vertex data specified.",
1671	"Entity::findBlendedVertexData");
1672	}
1673	//-----------------------------------------------------------------------
1674	SubEntity* Entity::findSubEntityForVertexData(const VertexData* orig)
1675	{
1676	if (orig == mMesh->sharedVertexData)
1677	{
1678	return 0;
1679	}
1680
1681	SubEntityList::iterator i, iend;
1682	iend = mSubEntityList.end();
1683	for (i = mSubEntityList.begin(); i != iend; ++i)
1684	{
1685	SubEntity* se = *i;
1686	if (orig == se->getSubMesh()->vertexData)
1687	{
1688	return se;
1689	}
1690	}
1691
1692	// None found
1693	return 0;
1694	}
1695	//-----------------------------------------------------------------------
1696	void Entity::addSoftwareAnimationRequest(bool normalsAlso)
1697	{
1698	mSoftwareAnimationRequests++;
1699	if (normalsAlso) {
1700	mSoftwareAnimationNormalsRequests++;
1701	}
1702	}
1703	//-----------------------------------------------------------------------
1704	void Entity::removeSoftwareAnimationRequest(bool normalsAlso)
1705	{
1706	if (mSoftwareAnimationRequests == 0 \|\|
1707	(normalsAlso && mSoftwareAnimationNormalsRequests == 0))
1708	{
1709	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
1710	"Attempt to remove nonexistant request.",
1711	"Entity::removeSoftwareAnimationRequest");
1712	}
1713	mSoftwareAnimationRequests--;
1714	if (normalsAlso) {
1715	mSoftwareAnimationNormalsRequests--;
1716	}
1717	}
1718	//-----------------------------------------------------------------------
1719	void Entity::_notifyAttached(Node* parent, bool isTagPoint)
1720	{
1721	MovableObject::_notifyAttached(parent, isTagPoint);
1722	// Also notify LOD entities
1723	LODEntityList::iterator i, iend;
1724	iend = mLodEntityList.end();
1725	for (i = mLodEntityList.begin(); i != iend; ++i)
1726	{
1727	(*i)->_notifyAttached(parent, isTagPoint);
1728	}
1729
1730	}
1731	//-----------------------------------------------------------------------
1732	//-----------------------------------------------------------------------
1733	Entity::EntityShadowRenderable::EntityShadowRenderable(Entity* parent,
1734	HardwareIndexBufferSharedPtr* indexBuffer, const VertexData* vertexData,
1735	bool createSeparateLightCap, SubEntity* subent, bool isLightCap)
1736	: mParent(parent), mSubEntity(subent)
1737	{
1738	// Save link to vertex data
1739	mCurrentVertexData = vertexData;
1740
1741	// Initialise render op
1742	mRenderOp.indexData = new IndexData();
1743	mRenderOp.indexData->indexBuffer = *indexBuffer;
1744	mRenderOp.indexData->indexStart = 0;
1745	// index start and count are sorted out later
1746
1747	// Create vertex data which just references position component (and 2 component)
1748	mRenderOp.vertexData = new VertexData();
1749	// Map in position data
1750	mRenderOp.vertexData->vertexDeclaration->addElement(0,0,VET_FLOAT3, VES_POSITION);
1751	mOriginalPosBufferBinding =
1752	vertexData->vertexDeclaration->findElementBySemantic(VES_POSITION)->getSource();
1753	mPositionBuffer = vertexData->vertexBufferBinding->getBuffer(mOriginalPosBufferBinding);
1754	mRenderOp.vertexData->vertexBufferBinding->setBinding(0, mPositionBuffer);
1755	// Map in w-coord buffer (if present)
1756	if(!vertexData->hardwareShadowVolWBuffer.isNull())
1757	{
1758	mRenderOp.vertexData->vertexDeclaration->addElement(1,0,VET_FLOAT1, VES_TEXTURE_COORDINATES, 0);
1759	mWBuffer = vertexData->hardwareShadowVolWBuffer;
1760	mRenderOp.vertexData->vertexBufferBinding->setBinding(1, mWBuffer);
1761	}
1762	// Use same vertex start as input
1763	mRenderOp.vertexData->vertexStart = vertexData->vertexStart;
1764
1765	if (isLightCap)
1766	{
1767	// Use original vertex count, no extrusion
1768	mRenderOp.vertexData->vertexCount = vertexData->vertexCount;
1769	}
1770	else
1771	{
1772	// Vertex count must take into account the doubling of the buffer,
1773	// because second half of the buffer is the extruded copy
1774	mRenderOp.vertexData->vertexCount =
1775	vertexData->vertexCount * 2;
1776	if (createSeparateLightCap)
1777	{
1778	// Create child light cap
1779	mLightCap = new EntityShadowRenderable(parent,
1780	indexBuffer, vertexData, false, subent, true);
1781	}
1782	}
1783
1784	}
1785	//-----------------------------------------------------------------------
1786	Entity::EntityShadowRenderable::~EntityShadowRenderable()
1787	{
1788	delete mRenderOp.indexData;
1789	delete mRenderOp.vertexData;
1790	}
1791	//-----------------------------------------------------------------------
1792	void Entity::EntityShadowRenderable::getWorldTransforms(Matrix4* xform) const
1793	{
1794	*xform = mParent->_getParentNodeFullTransform();
1795	}
1796	//-----------------------------------------------------------------------
1797	const Quaternion& Entity::EntityShadowRenderable::getWorldOrientation(void) const
1798	{
1799	return mParent->getParentNode()->_getDerivedOrientation();
1800	}
1801	//-----------------------------------------------------------------------
1802	const Vector3& Entity::EntityShadowRenderable::getWorldPosition(void) const
1803	{
1804	return mParent->getParentNode()->_getDerivedPosition();
1805	}
1806	//-----------------------------------------------------------------------
1807	void Entity::EntityShadowRenderable::rebindPositionBuffer(const VertexData* vertexData, bool force)
1808	{
1809	if (force \|\| mCurrentVertexData != vertexData)
1810	{
1811	mCurrentVertexData = vertexData;
1812	mPositionBuffer = mCurrentVertexData->vertexBufferBinding->getBuffer(
1813	mOriginalPosBufferBinding);
1814	mRenderOp.vertexData->vertexBufferBinding->setBinding(0, mPositionBuffer);
1815	if (mLightCap)
1816	{
1817	static_cast<EntityShadowRenderable*>(mLightCap)->rebindPositionBuffer(vertexData, force);
1818	}
1819	}
1820	}
1821	//-----------------------------------------------------------------------
1822	bool Entity::EntityShadowRenderable::isVisible(void) const
1823	{
1824	if (mSubEntity)
1825	{
1826	return mSubEntity->isVisible();
1827	}
1828	else
1829	{
1830	return ShadowRenderable::isVisible();
1831	}
1832	}
1833	//-----------------------------------------------------------------------
1834	void Entity::setRenderQueueGroup(uint8 queueID)
1835	{
1836	MovableObject::setRenderQueueGroup(queueID);
1837
1838	// Set render queue for all manual LOD entities
1839	if (mMesh->isLodManual())
1840	{
1841	LODEntityList::iterator li, liend;
1842	liend = mLodEntityList.end();
1843	for (li = mLodEntityList.begin(); li != liend; ++li)
1844	{
1845	(*li)->setRenderQueueGroup(queueID);
1846	}
1847	}
1848	}
1849	//-----------------------------------------------------------------------
1850	void Entity::shareSkeletonInstanceWith(Entity* entity)
1851	{
1852	if (entity->getMesh()->getSkeleton() != getMesh()->getSkeleton())
1853	{
1854	OGRE_EXCEPT(Exception::ERR_RT_ASSERTION_FAILED,
1855	"The supplied entity has a different skeleton.",
1856	"Entity::shareSkeletonWith");
1857	}
1858	if (!mSkeletonInstance)
1859	{
1860	OGRE_EXCEPT(Exception::ERR_RT_ASSERTION_FAILED,
1861	"This entity has no skeleton.",
1862	"Entity::shareSkeletonWith");
1863	}
1864	if (mSharedSkeletonEntities != NULL && entity->mSharedSkeletonEntities != NULL)
1865	{
1866	OGRE_EXCEPT(Exception::ERR_RT_ASSERTION_FAILED,
1867	"Both entities already shares their SkeletonInstances! At least "
1868	"one of the instances must not share it's instance.",
1869	"Entity::shareSkeletonWith");
1870	}
1871
1872	//check if we already share our skeletoninstance, we don't want to delete it if so
1873	if (mSharedSkeletonEntities != NULL)
1874	{
1875	entity->shareSkeletonInstanceWith(this);
1876	}
1877	else
1878	{
1879	delete mSkeletonInstance;
1880	AlignedMemory::deallocate(mBoneMatrices);
1881	delete mAnimationState;
1882	delete mFrameBonesLastUpdated;
1883	mSkeletonInstance = entity->mSkeletonInstance;
1884	mNumBoneMatrices = entity->mNumBoneMatrices;
1885	mBoneMatrices = entity->mBoneMatrices;
1886	mAnimationState = entity->mAnimationState;
1887	mFrameBonesLastUpdated = entity->mFrameBonesLastUpdated;
1888	if (entity->mSharedSkeletonEntities == NULL)
1889	{
1890	entity->mSharedSkeletonEntities = new EntitySet();
1891	entity->mSharedSkeletonEntities->insert(entity);
1892	}
1893	mSharedSkeletonEntities = entity->mSharedSkeletonEntities;
1894	mSharedSkeletonEntities->insert(this);
1895	}
1896	}
1897	//-----------------------------------------------------------------------
1898	void Entity::stopSharingSkeletonInstance()
1899	{
1900	if (mSharedSkeletonEntities == NULL)
1901	{
1902	OGRE_EXCEPT(Exception::ERR_RT_ASSERTION_FAILED,
1903	"This entity is not sharing it's skeletoninstance.",
1904	"Entity::shareSkeletonWith");
1905	}
1906	//check if there's no other than us sharing the skeleton instance
1907	if (mSharedSkeletonEntities->size() == 1)
1908	{
1909	//just reset
1910	delete mSharedSkeletonEntities;
1911	mSharedSkeletonEntities = 0;
1912	}
1913	else
1914	{
1915	mSkeletonInstance = new SkeletonInstance(mMesh->getSkeleton());
1916	mSkeletonInstance->load();
1917	mAnimationState = new AnimationStateSet();
1918	mMesh->_initAnimationState(mAnimationState);
1919	mFrameBonesLastUpdated = new unsigned long(std::numeric_limits<unsigned long>::max());
1920	mNumBoneMatrices = mSkeletonInstance->getNumBones();
1921	mBoneMatrices = static_cast<Matrix4>(AlignedMemory::allocate(sizeof(Matrix4) mNumBoneMatrices));
1922
1923	mSharedSkeletonEntities->erase(this);
1924	if (mSharedSkeletonEntities->size() == 1)
1925	{
1926	(*mSharedSkeletonEntities->begin())->stopSharingSkeletonInstance();
1927	}
1928	mSharedSkeletonEntities = 0;
1929	}
1930	}
1931	//-----------------------------------------------------------------------
1932	void Entity::refreshAvailableAnimationState(void)
1933	{
1934	mMesh->_refreshAnimationState(mAnimationState);
1935	}
1936	//-----------------------------------------------------------------------
1937	uint32 Entity::getTypeFlags(void) const
1938	{
1939	return SceneManager::ENTITY_TYPE_MASK;
1940	}
1941	//-----------------------------------------------------------------------
1942	VertexData* Entity::getVertexDataForBinding(void)
1943	{
1944	Entity::VertexDataBindChoice c =
1945	chooseVertexDataForBinding(mMesh->getSharedVertexDataAnimationType() != VAT_NONE);
1946	switch(c)
1947	{
1948	case BIND_ORIGINAL:
1949	return mMesh->sharedVertexData;
1950	case BIND_HARDWARE_MORPH:
1951	return mHardwareVertexAnimVertexData;
1952	case BIND_SOFTWARE_MORPH:
1953	return mSoftwareVertexAnimVertexData;
1954	case BIND_SOFTWARE_SKELETAL:
1955	return mSkelAnimVertexData;
1956	};
1957	// keep compiler happy
1958	return mMesh->sharedVertexData;
1959	}
1960	//-----------------------------------------------------------------------
1961	Entity::VertexDataBindChoice Entity::chooseVertexDataForBinding(bool vertexAnim) const
1962	{
1963	if (hasSkeleton())
1964	{
1965	if (!mHardwareAnimation)
1966	{
1967	// all software skeletal binds same vertex data
1968	// may be a 2-stage s/w transform including morph earlier though
1969	return BIND_SOFTWARE_SKELETAL;
1970	}
1971	else if (vertexAnim)
1972	{
1973	// hardware morph animation
1974	return BIND_HARDWARE_MORPH;
1975	}
1976	else
1977	{
1978	// hardware skeletal, no morphing
1979	return BIND_ORIGINAL;
1980	}
1981	}
1982	else if (vertexAnim)
1983	{
1984	// morph only, no skeletal
1985	if (mHardwareAnimation)
1986	{
1987	return BIND_HARDWARE_MORPH;
1988	}
1989	else
1990	{
1991	return BIND_SOFTWARE_MORPH;
1992	}
1993
1994	}
1995	else
1996	{
1997	return BIND_ORIGINAL;
1998	}
1999
2000	}
2001	//-----------------------------------------------------------------------
2002	//-----------------------------------------------------------------------
2003	String EntityFactory::FACTORY_TYPE_NAME = "Entity";
2004	//-----------------------------------------------------------------------
2005	const String& EntityFactory::getType(void) const
2006	{
2007	return FACTORY_TYPE_NAME;
2008	}
2009	//-----------------------------------------------------------------------
2010	MovableObject* EntityFactory::createInstanceImpl( const String& name,
2011	const NameValuePairList* params)
2012	{
2013	// must have mesh parameter
2014	MeshPtr pMesh;
2015	if (params != 0)
2016	{
2017	NameValuePairList::const_iterator ni = params->find("mesh");
2018	if (ni != params->end())
2019	{
2020	// Get mesh (load if required)
2021	pMesh = MeshManager::getSingleton().load(
2022	ni->second,
2023	// autodetect group location
2024	ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME );
2025	}
2026
2027	}
2028	if (pMesh.isNull())
2029	{
2030	OGRE_EXCEPT(Exception::ERR_INVALIDPARAMS,
2031	"'mesh' parameter required when constructing an Entity.",
2032	"EntityFactory::createInstance");
2033	}
2034
2035	return new Entity(name, pMesh);
2036
2037	}
2038	//-----------------------------------------------------------------------
2039	void EntityFactory::destroyInstance( MovableObject* obj)
2040	{
2041	delete obj;
2042	}
2043
2044
2045	}

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